{"pageNumber":"75","pageRowStart":"1850","pageSize":"25","recordCount":4111,"records":[{"id":70040393,"text":"70040393 - 2012 - Temporal variations of geyser water chemistry in the Upper Geyser Basin, Yellowstone National Park, USA","interactions":[],"lastModifiedDate":"2019-05-30T12:35:05","indexId":"70040393","displayToPublicDate":"2012-12-13T09:04:47","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1757,"text":"Geochemistry, Geophysics, Geosystems","active":true,"publicationSubtype":{"id":10}},"title":"Temporal variations of geyser water chemistry in the Upper Geyser Basin, Yellowstone National Park, USA","docAbstract":"Geysers are rare features that reflect a delicate balance between an abundant supply of water and heat and a unique geometry of fractures and porous rocks. Between April 2007 and September 2008, we sampled Old Faithful, Daisy, Grand, Oblong, and Aurum geysers in Yellowstone National Park's Upper Geyser Basin and characterized temporal variations in major element chemistry and water isotopes (δ<sup>18</sup>O, δD, <sup>3</sup>H). We compare these temporal variations with temporal trends of Geyser Eruption Intervals (GEI). SiO<sub>2</sub> concentrations and geothermometry indicate that the geysers are fed by waters ascending from a reservoir with temperatures of ∼190 to 210°C. The studied geysers display small and complex chemical and isotopic seasonal variations, and geysers with smaller volume display larger seasonal variations than geysers with larger volumes. Aurum and Oblong Geysers contain detectable tritium concentrations, suggesting that erupted water contains some modern meteoric water. We propose that seasonal GEI variations result from varying degrees of evaporation, meteoric water recharge, water table fluctuations, and possible hydraulic interaction with the adjacent Firehole River. We demonstrate that the concentrations of major dissolved species in Old Faithful Geyser have remained nearly constant since 1884 despite large changes in Old Faithful's eruption intervals, suggesting that no major changes have occurred in the hydrothermal system of the Upper Geyser Basin for >120 years. Our data set provides a baseline for monitoring future changes in geyser activity that might result from varying climate, earthquakes, and changes in heat flow from the underlying magmatic system.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geochemistry, Geophysics, Geosystems","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Geophysical Union","publisherLocation":"Washington, D.C.","doi":"10.1029/2012GC004388","usgsCitation":"Hurwitz, S., Hunt, A.G., and Evans, W.C., 2012, Temporal variations of geyser water chemistry in the Upper Geyser Basin, Yellowstone National Park, USA: Geochemistry, Geophysics, Geosystems, v. 13, no. 12, 19 p., https://doi.org/10.1029/2012GC004388.","productDescription":"19 p.","numberOfPages":"19","ipdsId":"IP-041584","costCenters":[{"id":148,"text":"Branch of Regional Research-Western Region","active":false,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":280954,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2012GC004388"},{"id":280955,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wyoming","otherGeospatial":"Firehole River;Upper Geyser Basin;Yellowstone National Park","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -111.156,44.1313 ], [ -111.156,45.109 ], [ -109.8255,45.109 ], [ -109.8255,44.1313 ], [ -111.156,44.1313 ] ] ] } } ] }","volume":"13","issue":"12","noUsgsAuthors":false,"publicationDate":"2012-12-13","publicationStatus":"PW","scienceBaseUri":"53cd768de4b0b2908510af70","contributors":{"authors":[{"text":"Hurwitz, Shaul 0000-0001-5142-6886 shaulh@usgs.gov","orcid":"https://orcid.org/0000-0001-5142-6886","contributorId":2169,"corporation":false,"usgs":true,"family":"Hurwitz","given":"Shaul","email":"shaulh@usgs.gov","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":468259,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hunt, Andrew G. 0000-0002-3810-8610 ahunt@usgs.gov","orcid":"https://orcid.org/0000-0002-3810-8610","contributorId":1582,"corporation":false,"usgs":true,"family":"Hunt","given":"Andrew","email":"ahunt@usgs.gov","middleInitial":"G.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":468258,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Evans, William C. 0000-0001-5942-3102 wcevans@usgs.gov","orcid":"https://orcid.org/0000-0001-5942-3102","contributorId":2353,"corporation":false,"usgs":true,"family":"Evans","given":"William","email":"wcevans@usgs.gov","middleInitial":"C.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":468260,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70041597,"text":"70041597 - 2012 - Palynological composition of a Lower Cretaceous South American tropical sequence: Climatic implications and diversity comparisons with other latitudes.","interactions":[],"lastModifiedDate":"2013-11-15T10:48:31","indexId":"70041597","displayToPublicDate":"2012-12-08T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":724,"text":"American Journal of Botany","active":true,"publicationSubtype":{"id":10}},"title":"Palynological composition of a Lower Cretaceous South American tropical sequence: Climatic implications and diversity comparisons with other latitudes.","docAbstract":"<i>Premise of the study</i>: Reconstruction of floristic patterns during the early diversification of angiosperms is impeded by the scarce fossil record, especially in tropical latitudes. Here we collected quantitative palynological data from a stratigraphic sequence in tropical South America to provide floristic and climatic insights into such tropical environments during the Early Cretaceous.\n\n<i>Methods</i>: We reconstructed the floristic composition of an Aptian-Albian tropical sequence from central Colombia using quantitative palynology (rarefied species richness and abundance) and used it to infer its predominant climatic conditions. Additionally, we compared our results with available quantitative data from three other sequences encompassing 70 floristic assemblages to determine latitudinal diversity patterns.\n\n<i>Key results</i>: Abundance of humidity indicators was higher than that of aridity indicators (61% vs. 10%). Additionally, we found an angiosperm latitudinal diversity gradient (LDG) for the Aptian, but not for the Albian, and an inverted LDG of the overall diversity for the Albian. Angiosperm species turnover during the Albian, however, was higher in humid tropics.\n\n<i>Conclusions</i>: There were humid climates in northwestern South America during the Aptian-Albian interval contrary to the widespread aridity expected for the tropical belt. The Albian inverted overall LDG is produced by a faster increase in per-sample angiosperm and pteridophyte diversity in temperate latitudes. However, humid tropical sequences had higher rates of floristic turnover suggesting a higher degree of morphological variation than in temperate regions.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Journal of Botany","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Botanical Society of America","publisherLocation":"St. Louis, MO","doi":"10.3732/ajb.1200135","usgsCitation":"Mejia-Velasquez, P., Dilcher, D.L., Jaramillo, C., Fortini, L., and Manchester, S., 2012, Palynological composition of a Lower Cretaceous South American tropical sequence: Climatic implications and diversity comparisons with other latitudes.: American Journal of Botany, v. 99, no. 11, p. 1819-1827, https://doi.org/10.3732/ajb.1200135.","productDescription":"9 p.","startPage":"1819","endPage":"1827","ipdsId":"IP-041295","costCenters":[{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true}],"links":[{"id":263887,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":263886,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3732/ajb.1200135"}],"otherGeospatial":"South America","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -94.0,-56.5 ], [ -94.0,13.1 ], [ -32.6,13.1 ], [ -32.6,-56.5 ], [ -94.0,-56.5 ] ] ] } } ] }","volume":"99","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50c46194e4b0e44331d07174","contributors":{"authors":[{"text":"Mejia-Velasquez, Paula J.","contributorId":19447,"corporation":false,"usgs":true,"family":"Mejia-Velasquez","given":"Paula J.","affiliations":[],"preferred":false,"id":469965,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dilcher, David L.","contributorId":32208,"corporation":false,"usgs":true,"family":"Dilcher","given":"David","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":469967,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jaramillo, Carlos A.","contributorId":76610,"corporation":false,"usgs":true,"family":"Jaramillo","given":"Carlos A.","affiliations":[],"preferred":false,"id":469968,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fortini, Lucas B.","contributorId":10693,"corporation":false,"usgs":true,"family":"Fortini","given":"Lucas B.","affiliations":[],"preferred":false,"id":469964,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Manchester, Steven R.","contributorId":24657,"corporation":false,"usgs":true,"family":"Manchester","given":"Steven R.","affiliations":[],"preferred":false,"id":469966,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70041446,"text":"70041446 - 2012 - Effectiveness of common fish screen materials to protect lamprey ammocoetes","interactions":[],"lastModifiedDate":"2016-05-03T17:26:40","indexId":"70041446","displayToPublicDate":"2012-12-05T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Effectiveness of common fish screen materials to protect lamprey ammocoetes","docAbstract":"<p><span>Understanding the effects of irrigation diversions on populations of Pacific lamprey</span><i>Lampetra tridentata</i><span>&nbsp;in the Columbia River basin is needed for their recovery. We tested the effectiveness of five common fish screen materials for excluding lamprey ammocoetes: interlock (IL), vertical bar (VB), perforated plate (PP), and 12-gauge and 14-gauge wire cloth (WC12) and (WC14). When fish (28&ndash;153&nbsp;mm) were exposed for 60&nbsp;min to screen panels perpendicular to an approach velocity of 12&nbsp;cm/s in a recirculating flume, the percentage of ammocoetes entrained (i.e., passed through the screen) was 26% for the IL, 18% for the PP, 33% for the VB, 62% for the WC14, and 65% for the WC12 screens. For all screens, most fish were entrained within the first 15&ndash;20&nbsp;min. Fish length significantly influenced entrainment, with the PP, VB, and IL screens preventing fish greater than 50&ndash;65&nbsp;mm from entrainment and the WC14 and WC12 screens preventing entrainment of fish greater than 90&ndash;110&nbsp;mm. Fish of all sizes repeatedly became impinged (i.e., contacting the screen for more than 1&nbsp;s) on the screens, with the frequency of impingement events increasing during the first 5&nbsp;min and becoming relatively stable thereafter. Impingement ranges were highest on the IL screen (36&ndash;62%), lowest on the WC14 and WC12 screens (13&ndash;31%), and intermediate on the PP and VB screens (23&ndash;54%). However, the WC14 and WC12 screens had fewer and larger fish remaining as time elapsed because so many were entrained. For all screen types, injuries were rare and minor, and no fish died after overnight posttest holding. Our results indicate that wire cloth screens should be replaced, where practical, with perforated plate, vertical bar, or interlocking bar screens to reduce lamprey entrainment at water diversions.</span></p>","language":"English","publisher":"American Fisheries Society","doi":"10.1080/02755947.2012.678965","usgsCitation":"Rose, B.P., and Mesa, M.G., 2012, Effectiveness of common fish screen materials to protect lamprey ammocoetes: North American Journal of Fisheries Management, v. 32, no. 3, p. 597-603, https://doi.org/10.1080/02755947.2012.678965.","productDescription":"7 p.","startPage":"597","endPage":"603","numberOfPages":"8","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-033600","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":263704,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"32","issue":"3","noUsgsAuthors":false,"publicationDate":"2012-06-19","publicationStatus":"PW","scienceBaseUri":"50bfb8f8e4b01744973f779a","contributors":{"authors":[{"text":"Rose, Brien P. brose@usgs.gov","contributorId":3493,"corporation":false,"usgs":true,"family":"Rose","given":"Brien","email":"brose@usgs.gov","middleInitial":"P.","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":true,"id":469726,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mesa, Matthew G. mmesa@usgs.gov","contributorId":3423,"corporation":false,"usgs":true,"family":"Mesa","given":"Matthew","email":"mmesa@usgs.gov","middleInitial":"G.","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":true,"id":469725,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70041417,"text":"70041417 - 2012 - Carbon dioxide and hydrogen sulfide degassing and cryptic thermal input to Brimstone Basin, Yellowstone National Park, Wyoming","interactions":[],"lastModifiedDate":"2019-05-30T10:07:54","indexId":"70041417","displayToPublicDate":"2012-12-05T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"title":"Carbon dioxide and hydrogen sulfide degassing and cryptic thermal input to Brimstone Basin, Yellowstone National Park, Wyoming","docAbstract":"Brimstone Basin, a remote area of intense hydrothermal alteration a few km east of the Yellowstone Caldera, is rarely studied and has long been considered to be a cold remnant of an ancient hydrothermal system. A field campaign in 2008 confirmed that gas emissions from the few small vents were cold and that soil temperatures in the altered area were at background levels. Geochemical and isotopic evidence from gas samples (<sup>3</sup>He/<sup>4</sup>He ~ 3R<sub>A</sub>, δ<sup>13</sup>C-CO<sub>2</sub> ~ − 3&permil;) however, indicate continuing magmatic gas input to the system. Accumulation chamber measurements revealed a surprisingly large diffuse flux of CO<sub>2</sub> (~ 277 t d<sup>-1</sup>) and H<sub>2</sub>S (0.6 t d<sup>-1</sup>). The flux of CO<sub>2</sub> reduces the <sup>18</sup>O content of the overlying cold groundwater and related stream waters relative to normal meteoric waters. Simple isotopic modeling reveals that the CO<sub>2</sub> likely originates from geothermal water at a temperature of 93 ± 19 °C. These results and the presence of thermogenic hydrocarbons (C1:C2 ~ 100 and δ<sup>13</sup>C-CH<sub>4</sub> = − 46.4 to − 42.8&permil;) in gases require some heat source at depth and refute the assumption that this is a “fossil” hydrothermal system.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Chemical Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","publisherLocation":"Amsterdam, Netherlands","doi":"10.1016/j.chemgeo.2012.09.001","usgsCitation":"Bergfeld, D., Evans, W.C., Lowenstern, J.B., and Hurwitz, S., 2012, Carbon dioxide and hydrogen sulfide degassing and cryptic thermal input to Brimstone Basin, Yellowstone National Park, Wyoming: Chemical Geology, v. 330-331, p. 233-243, https://doi.org/10.1016/j.chemgeo.2012.09.001.","productDescription":"11 p.","startPage":"233","endPage":"243","ipdsId":"IP-036804","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":263689,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":263688,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.chemgeo.2012.09.001"}],"country":"United States","state":"Wyoming","otherGeospatial":"Brimstone Basin;Yellowstone National Park","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -111.06,40.99 ], [ -111.06,45.01 ], [ -104.05,45.01 ], [ -104.05,40.99 ], [ -111.06,40.99 ] ] ] } } ] }","volume":"330-331","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50bfb73ee4b01744973f777e","contributors":{"authors":[{"text":"Bergfeld, D.","contributorId":58053,"corporation":false,"usgs":true,"family":"Bergfeld","given":"D.","email":"","affiliations":[],"preferred":false,"id":469683,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Evans, William C.","contributorId":104903,"corporation":false,"usgs":true,"family":"Evans","given":"William","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":469685,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lowenstern, J. B.","contributorId":7737,"corporation":false,"usgs":true,"family":"Lowenstern","given":"J.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":469682,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hurwitz, S.","contributorId":61110,"corporation":false,"usgs":true,"family":"Hurwitz","given":"S.","email":"","affiliations":[],"preferred":false,"id":469684,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70154950,"text":"70154950 - 2012 - Population status and habitat associations of the King Rail in the midwestern United States","interactions":[],"lastModifiedDate":"2015-07-22T09:33:47","indexId":"70154950","displayToPublicDate":"2012-12-01T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3731,"text":"Waterbirds","onlineIssn":"19385390","printIssn":"15244695","active":true,"publicationSubtype":{"id":10}},"title":"Population status and habitat associations of the King Rail in the midwestern United States","docAbstract":"<p><span>The migratory population of the King Rail (</span><i>Rallus elegans</i><span>) has declined dramatically during the past 50 years, emphasizing the need to document the distribution and status of this species to help guide conservation efforts. In an effort to guide King Rail breeding habitat protection and restoration, a landscape suitability index (LSI) model was developed for the Upper Mississippi River and Great Lakes Region Joint Venture (JV). To validate this model, 264 sites were surveyed across the JV region in 2008 and 2009 using the National Marshbird Monitoring protocol. Two other similarly collected data sets from Wisconsin (250 sites) and Ohio (259 sites) as well as data from the Cornell Laboratory of Ornithology's eBird database were added to our data set. Sampling effort was not uniform across the study area. King Rails were detected at 29 sites with the greatest concentration in southeastern Wisconsin and northeastern Illinois. Too few detections were made to validate the LSI model. King Rail detection sites tended to have microtopographic heterogeneity, more emergent herbaceous wetland vegetation and less woody vegetation. The migrant population of the King Rail is rare and warrants additional conservation efforts to achieve stated conservation population targets.</span></p>","language":"English","publisher":"The Waterbird Society","doi":"10.1675/063.035.0404","usgsCitation":"Bolenbaugh, J.R., Cooper, T., Brady, R.S., Willard, K.L., and Krementz, D.G., 2012, Population status and habitat associations of the King Rail in the midwestern United States: Waterbirds, v. 35, no. 4, p. 535-545, https://doi.org/10.1675/063.035.0404.","productDescription":"11 p.","startPage":"535","endPage":"545","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-036202","costCenters":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"links":[{"id":305876,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, Ohio, Wisconsin","geographicExtents":"{\n  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Tom","contributorId":145778,"corporation":false,"usgs":false,"family":"Cooper","given":"Tom","email":"","affiliations":[],"preferred":false,"id":565270,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brady, Ryan S.","contributorId":145779,"corporation":false,"usgs":false,"family":"Brady","given":"Ryan","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":565271,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Willard, Karen L.","contributorId":145780,"corporation":false,"usgs":false,"family":"Willard","given":"Karen","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":565272,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Krementz, David G. 0000-0002-5661-4541 dkrementz@usgs.gov","orcid":"https://orcid.org/0000-0002-5661-4541","contributorId":2827,"corporation":false,"usgs":true,"family":"Krementz","given":"David","email":"dkrementz@usgs.gov","middleInitial":"G.","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":true,"id":565273,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70178820,"text":"70178820 - 2012 - The impact of antecedent fire area on burned area in southern California coastal ecosystems","interactions":[],"lastModifiedDate":"2019-12-14T07:17:58","indexId":"70178820","displayToPublicDate":"2012-11-30T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2258,"text":"Journal of Environmental Management","active":true,"publicationSubtype":{"id":10}},"title":"The impact of antecedent fire area on burned area in southern California coastal ecosystems","docAbstract":"<p><span>Frequent wildfire disasters in southern California highlight the need for risk reduction strategies for the region, of which fuel reduction via prescribed burning is one option. However, there is no consensus about the effectiveness of prescribed fire in reducing the area of wildfire. Here, we use 29 years of historical fire mapping to quantify the relationship between annual wildfire area and antecedent fire area in predominantly shrub and grassland fuels in seven southern California counties, controlling for annual variation in weather patterns. This method has been used elsewhere to measure leverage: the reduction in wildfire area resulting from one unit of prescribed fire treatment. We found little evidence for a leverage effect (leverage&nbsp;=&nbsp;zero). Specifically our results showed no evidence that wildfire area was negatively influenced by previous fires, and only weak relationships with weather variables rainfall and Santa Ana wind occurrences, which were variables included to control for inter-annual variation. We conclude that this is because only 2% of the vegetation burns each year and so wildfires rarely encounter burned patches and chaparral shrublands can carry a fire within 1 or 2 years after previous fire. Prescribed burning is unlikely to have much influence on fire regimes in this area, though targeted treatment at the urban interface may be effective at providing defensible space for protecting assets. These results fit an emerging global model of fire leverage which position California at the bottom end of a continuum, with tropical savannas at the top (leverage&nbsp;=&nbsp;1: direct replacement of wildfire by prescribed fire) and Australian eucalypt forests in the middle (leverage&nbsp;∼&nbsp;0.25).</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.jenvman.2012.08.042","usgsCitation":"Price, O.F., Bradstock, R.A., Keeley, J.E., and Syphard, A.D., 2012, The impact of antecedent fire area on burned area in southern California coastal ecosystems: Journal of Environmental Management, v. 113, p. 301-307, https://doi.org/10.1016/j.jenvman.2012.08.042.","productDescription":"7 p.","startPage":"301","endPage":"307","ipdsId":"IP-039843","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":331696,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","county":"Los Angeles County, Orange County, Riverside County, San Diego County, San Luis Obispo County, Santa Barbara County, Ventura County","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -116.93847656250001,\n              32.509761735919426\n            ],\n            [\n              -115.75195312499999,\n              32.58384932565662\n            ],\n            [\n              -117.8173828125,\n              35.53222622770337\n            ],\n            [\n              -119.61914062499999,\n              37.020098201368114\n            ],\n            [\n              -121.201171875,\n              37.85750715625203\n            ],\n            [\n              -122.51953124999999,\n              37.3002752813443\n            ],\n            [\n              -121.9482421875,\n              36.421282443649496\n            ],\n            [\n              -121.1572265625,\n              34.08906131584994\n            ],\n            [\n              -119.0478515625,\n              33.32134852669881\n            ],\n            [\n              -117.5537109375,\n              33.247875947924385\n            ],\n            [\n              -116.93847656250001,\n              32.509761735919426\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"113","publishingServiceCenter":{"id":1,"text":"Sacramento PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"584a7f7de4b07e29c706dd39","contributors":{"authors":[{"text":"Price, Owen F.","contributorId":177305,"corporation":false,"usgs":false,"family":"Price","given":"Owen","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":655257,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bradstock, Ross A.","contributorId":42826,"corporation":false,"usgs":false,"family":"Bradstock","given":"Ross","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":655258,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Keeley, Jon E. 0000-0002-4564-6521 jon_keeley@usgs.gov","orcid":"https://orcid.org/0000-0002-4564-6521","contributorId":1268,"corporation":false,"usgs":true,"family":"Keeley","given":"Jon","email":"jon_keeley@usgs.gov","middleInitial":"E.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":655256,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Syphard, Alexandra D.","contributorId":8977,"corporation":false,"usgs":false,"family":"Syphard","given":"Alexandra","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":655259,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70040865,"text":"sir20125215 - 2012 - Byproduct metals and rare-earth elements used in the production of light-emitting diodes—Overview of principal sources of supply and material requirements for selected markets","interactions":[],"lastModifiedDate":"2012-11-26T14:51:43","indexId":"sir20125215","displayToPublicDate":"2012-11-26T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2012-5215","title":"Byproduct metals and rare-earth elements used in the production of light-emitting diodes—Overview of principal sources of supply and material requirements for selected markets","docAbstract":"The use of light-emitting diodes (LEDs) is expanding because of environmental issues and the efficiency and cost savings achieved compared with use of traditional incandescent lighting. The longer life and reduced power consumption of some LEDs have led to annual energy savings, reduced maintenance costs, and lower emissions of carbon dioxide, sulfur dioxide, and nitrogen oxides from powerplants because of the resulting decrease in energy consumption required for lighting applications when LEDs are used to replace less-energy-efficient sources. Metals such as arsenic, gallium, indium, and the rare-earth elements (REEs) cerium, europium, gadolinium, lanthanum, terbium, and yttrium are important mineral materials used in LED semiconductor technology. Most of the world's supply of these materials is produced as byproducts from the production of aluminum, copper, lead, and zinc. Most of the rare earths required for LED production in 2011 came from China, and most LED production facilities were located in Asia. The LED manufacturing process is complex and is undergoing much change with the growth of the industry and the changes in demand patterns of associated commodities. In many respects, the continued growth of the LED industry, particularly in the general lighting sector, is tied to its ability to increase LED efficiency and color uniformity while decreasing the costs of producing, purchasing, and operating LEDs. Research is supported by governments of China, the European Union, Japan, the Republic of Korea, and the United States. Because of the volume of ongoing research in this sector, it is likely that the material requirements of future LEDs may be quite different than LEDs currently (2011) in use as industry attempts to cut costs by reducing material requirements of expensive heavy rare-earth phosphors and increasing the sizes of wafers for economies of scale. Improved LED performance will allow customers to reduce the number of LEDs in automotive, electronic, and lighting applications, which could reduce the overall demand for material components. Non-Chinese sources for rare earths are being developed, and some of these new sources are likely to be operational in time to meet increasing demand for rare earths from the LED sector. Because most LED component production and manufacturing occurs in Asia and many LED producers have established supply contracts with Chinese producers of rare earths, a significant amount of the metallic gallium, indium, and the rare earths used for LED production will likely continue to come from Chinese sources at least for the next 5 years; however, a greater amount of these materials are now being processed in Japan, the Republic of Korea, and Taiwan. As non-Chinese sources of rare earths come into production, these new mines are likely to be sources of light REEs, but China will likely remain the leading source of supply for the heavy REEs suitable for use as LED dopants and phosphors at least for the next few years. Increased research in the development of phosphors that use smaller amounts of or different REEs is intended to reduce dependence on rare earths from China. Supply disruption of rare earths and other specialty metals could take place if China's specialty metal exports are redirected to domestic markets. The cost of recovery is high and the lifespan for LEDs is comparatively long; thus, the LED waste volume was low in 2010, and few LEDs were recycled. The minute metal content of LEDs leads to a high cost for recovery, so recycling of LEDs outside of electronic waste is unlikely in the near term, although some LED producers are evaluating recycling options. Recycling of metals from LEDs in electronic waste is possible if the costs of recovering metals are justified by demand and metal prices.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20125215","usgsCitation":"Wilburn, D.R., 2012, Byproduct metals and rare-earth elements used in the production of light-emitting diodes—Overview of principal sources of supply and material requirements for selected markets: U.S. Geological Survey Scientific Investigations Report 2012-5215, iv, 15 p., https://doi.org/10.3133/sir20125215.","productDescription":"iv, 15 p.","numberOfPages":"24","onlineOnly":"Y","additionalOnlineFiles":"N","costCenters":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"links":[{"id":263378,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2012/5215/pdf/sir2012-5215.pdf"},{"id":263379,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir_2012_5215.gif"},{"id":263377,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2012/5215/"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50b48f86e4b0b3fb1a22913c","contributors":{"authors":[{"text":"Wilburn, David R. 0000-0002-5371-7617 wilburn@usgs.gov","orcid":"https://orcid.org/0000-0002-5371-7617","contributorId":1755,"corporation":false,"usgs":true,"family":"Wilburn","given":"David","email":"wilburn@usgs.gov","middleInitial":"R.","affiliations":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"preferred":true,"id":469159,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70040801,"text":"70040801 - 2012 - Disseminated toxoplasmosis in Antillean manatees Trichechus manatus manatus from Puerto Rico","interactions":[],"lastModifiedDate":"2012-11-19T12:11:47","indexId":"70040801","displayToPublicDate":"2012-11-19T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1396,"text":"Diseases of Aquatic Organisms","active":true,"publicationSubtype":{"id":10}},"title":"Disseminated toxoplasmosis in Antillean manatees Trichechus manatus manatus from Puerto Rico","docAbstract":"Necropsies were conducted on 4 Antillean manatees <i>Trichechus manatus manatus</i> that were stranded in single events on the coastal beaches of Puerto Rico from August 2010 to August 2011. Three manatees were emaciated and the gastrointestinal tracts were devoid of digesta. Microscopically, all manatees had severe widespread inflammatory lesions of the gastrointestinal tract and heart with intralesional tachyzoites consistent with <i>Toxoplasma gondii</i> identified by histological, ultrastructural and immunohistochemical techniques. The gastrointestinal lesions included severe, multifocal to diffuse, chronic-active enteritis, colitis and/or gastritis often with associated ulceration, necrosis and hemorrhage. Enteric leiomyositis was severe and locally extensive in all cases and associated with the most frequently observed intralesional protozoans. Moderate to severe, multifocal, chronic to chronic-active, necrotizing myocarditis was also present in all cases. Additionally, less consistent inflammatory lesions occurred in the liver, lung and a mesenteric lymph node and were associated with fewer tachyzoites. Sera (n = 30) collected from free-ranging and captive Puerto Rican manatees and a rehabilitated/released Puerto Rican manatee from 2003 to 2012 were tested for antibodies for <i>T. gondii</i>. A positive <i>T. gondii</i> antibody titer was found in 2004 in 1 (3%) of the free-ranging cases tested. Disease caused by <i>T. gondii</i> is rare in manatees. This is the first report of toxoplasmosis in Antillean manatees from Puerto Rico. Additionally, these are the first reported cases of disseminated toxoplasmosis in any sirenian. The documentation of 4 cases of toxoplasmosis within one year and the extremely low seroprevalence to <i>T. gondii</i>suggest that toxoplasmosis may be an emerging disease in Antillean manatees from Puerto Rico.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Diseases of Aquatic Organisms","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Inter-Research","publisherLocation":"Oldendorf/Luhe, Germany","doi":"10.3354/dao02526","usgsCitation":"Bossart, G.D., Mignucci-Ginannoni, A.A., Rivera-Guzman, A.L., Jimenez-Marrero, N.M., Camus, A.C., Bonde, R.K., Dubey, J.P., and Reif, J.S., 2012, Disseminated toxoplasmosis in Antillean manatees Trichechus manatus manatus from Puerto Rico: Diseases of Aquatic Organisms, v. 101, no. 2, p. 139-144, https://doi.org/10.3354/dao02526.","productDescription":"6 p.","startPage":"139","endPage":"144","ipdsId":"IP-038778","costCenters":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"links":[{"id":474264,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3354/dao02526","text":"Publisher Index Page"},{"id":263266,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":263265,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3354/dao02526"}],"country":"Puerto Rico","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -67.9455,17.8814 ], [ -67.9455,18.516 ], [ -65.2211,18.516 ], [ -65.2211,17.8814 ], [ -67.9455,17.8814 ] ] ] } } ] }","volume":"101","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50abfb6fe4b0afbc75eb9801","contributors":{"authors":[{"text":"Bossart, Gregory D.","contributorId":46678,"corporation":false,"usgs":true,"family":"Bossart","given":"Gregory","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":469054,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mignucci-Ginannoni, Antonio A.","contributorId":106385,"corporation":false,"usgs":true,"family":"Mignucci-Ginannoni","given":"Antonio","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":469058,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rivera-Guzman, Antonio L.","contributorId":47254,"corporation":false,"usgs":true,"family":"Rivera-Guzman","given":"Antonio","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":469055,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jimenez-Marrero, Nilda M.","contributorId":77007,"corporation":false,"usgs":true,"family":"Jimenez-Marrero","given":"Nilda","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":469057,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Camus, Alvin C.","contributorId":42492,"corporation":false,"usgs":true,"family":"Camus","given":"Alvin","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":469053,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Bonde, Robert K. 0000-0001-9179-4376 rbonde@usgs.gov","orcid":"https://orcid.org/0000-0001-9179-4376","contributorId":2675,"corporation":false,"usgs":true,"family":"Bonde","given":"Robert","email":"rbonde@usgs.gov","middleInitial":"K.","affiliations":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":469051,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Dubey, Jitender P.","contributorId":41707,"corporation":false,"usgs":true,"family":"Dubey","given":"Jitender","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":469052,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Reif, John S.","contributorId":60086,"corporation":false,"usgs":true,"family":"Reif","given":"John","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":469056,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70040764,"text":"pp1793 - 2012 - Synthesis of petrographic, geochemical, and isotopic data for the Boulder batholith, southwest Montana","interactions":[],"lastModifiedDate":"2012-11-16T08:47:02","indexId":"pp1793","displayToPublicDate":"2012-11-16T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1793","title":"Synthesis of petrographic, geochemical, and isotopic data for the Boulder batholith, southwest Montana","docAbstract":"The Late Cretaceous Boulder batholith in southwest Montana consists of the Butte Granite and a group of associated smaller intrusions emplaced into Mesoproterozoic to Mesozoic sedimentary rocks and into the Late Cretaceous Elkhorn Mountains Volcanics. The Boulder batholith is dominated by the voluminous Butte Granite, which is surrounded by as many as a dozen individually named, peripheral intrusions. These granodiorite, monzogranite, and minor syenogranite intrusions contain varying abundances of plagioclase, alkali feldspar, quartz, biotite, hornblende, rare clinopyroxene, and opaque oxide minerals. Mafic, intermediate, and felsic subsets of the Boulder batholith intrusions are defined principally on the basis of color index. Most Boulder batholith plutons have inequigranular to seriate textures although several are porphyritic and some are granophyric (and locally miarolitic). Most of these plutons are medium grained but several of the more felsic and granophyric intrusions are fine grained. Petrographic characteristics, especially relative abundances of constituent minerals, are distinctive and foster reasonably unambiguous identification of individual intrusions. Seventeen samples from plutons of the Boulder batholith were dated by SHRIMP (<u>S</u>ensitive <u>H</u>igh <u>R</u>esolution <u>I</u>on <u>M</u>icroprobe) zircon U-Pb geochronology. Three samples of the Butte Granite show that this large pluton may be composite, having formed during two episodes of magmatism at about 76.7 &plusmn; 0.5 Ma (2 samples) and 74.7 &plusmn; 0.6 million years ago (Ma) (1 sample). However, petrographic and chemical data are inconsistent with the Butte Granite consisting of separate, compositionally distinct intrusions. Accordingly, solidification of magma represented by the Butte Granite appears to have spanned about 2 million year (m.y.). The remaining Boulder batholith plutons were emplaced during a 6-10 m.y. span (81.7 &plusmn; 1.4 Ma to 73.7 &plusmn; 0.6 Ma). The compositional characteristics of these plutons are similar to those of moderately differentiated subduction-related magmas. The plutons form relatively coherent, distinct but broadly overlapping major oxide composition clusters or linear arrays on geochemical variation diagrams. Rock compositions are subalkaline, magnesian, calc-alkalic to calcic, and metaluminous to weakly peraluminous. The Butte Granite intrusion is homogeneous with respect to major oxide abundances. Each of the plutons is also characterized by distinct trace element abundances although absolute trace element abundance variations are relatively minor. Limited Sr and Nd isotope data for whole-rock samples of the Boulder batholith are more radiogenic than those for plutonic rocks of western Idaho, eastern Oregon, the Salmon River suture, and most of the Big Belt Mountains. Initial strontium (Sr<sub>i</sub>) values are low and epsilon neodymium (&epsilon;<sub>Nd</sub>) values are comparable relative to those of other southwest Montana basement and Mesozoic intrusive rocks. Importantly, although the Boulder batholith hosts significant mineral deposits, including the world-class Butte Cu-Ag deposit, ore metal abundances in the Butte Granite, as well as in its peripheral plutons, are not elevated but are comparable to global average abundances in igneous rocks.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/pp1793","usgsCitation":"du Bray, E.A., Aleinikoff, J.N., and Lund, K., 2012, Synthesis of petrographic, geochemical, and isotopic data for the Boulder batholith, southwest Montana: U.S. Geological Survey Professional Paper 1793, Report: iv, 39 p.; Appendix 1, https://doi.org/10.3133/pp1793.","productDescription":"Report: iv, 39 p.; Appendix 1","numberOfPages":"46","onlineOnly":"Y","additionalOnlineFiles":"Y","costCenters":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":263207,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/pp_1793.gif"},{"id":263204,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/pp/1793/"},{"id":263205,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/pp/1793/PP1793.pdf"},{"id":263206,"type":{"id":3,"text":"Appendix"},"url":"https://pubs.usgs.gov/pp/1793/Appendix_1.xls"}],"scale":"200000","projection":"Universal Transverse Mercator projection, Zone 12","datum":"North American Datum of 1927","country":"United States","state":"Montana","otherGeospatial":"Boulder Batholith","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -112.75,45.75 ], [ -112.75,46.75 ], [ -111.5,46.75 ], [ -111.5,45.75 ], [ -112.75,45.75 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50a76087e4b0e93eb366ee52","contributors":{"authors":[{"text":"du Bray, Edward A. 0000-0002-4383-8394 edubray@usgs.gov","orcid":"https://orcid.org/0000-0002-4383-8394","contributorId":755,"corporation":false,"usgs":true,"family":"du Bray","given":"Edward","email":"edubray@usgs.gov","middleInitial":"A.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":468974,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Aleinikoff, John N. 0000-0003-3494-6841 jaleinikoff@usgs.gov","orcid":"https://orcid.org/0000-0003-3494-6841","contributorId":1478,"corporation":false,"usgs":true,"family":"Aleinikoff","given":"John","email":"jaleinikoff@usgs.gov","middleInitial":"N.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":468976,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lund, Karen 0000-0002-4249-3582 klund@usgs.gov","orcid":"https://orcid.org/0000-0002-4249-3582","contributorId":1235,"corporation":false,"usgs":true,"family":"Lund","given":"Karen","email":"klund@usgs.gov","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":468975,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70040687,"text":"70040687 - 2012 - Joint estimation of habitat dynamics and species interactions: Disturbance reduces co-occurrence of non-native predators with an endangered toad","interactions":[],"lastModifiedDate":"2016-09-26T14:37:41","indexId":"70040687","displayToPublicDate":"2012-11-13T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2158,"text":"Journal of Animal Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Joint estimation of habitat dynamics and species interactions: Disturbance reduces co-occurrence of non-native predators with an endangered toad","docAbstract":"<p><strong>1.</strong> Ecologists have long been interested in the processes that determine patterns of species occurrence and co-occurrence. Potential short-comings of many existing empirical approaches that address these questions include a reliance on patterns of occurrence at a single time point, failure to account properly for imperfect detection and treating the environment as a static variable.</p><p><strong>2.</strong> We fit detection and non-detection data collected from repeat visits using a dynamic site occupancy model that simultaneously accounts for the temporal dynamics of a focal prey species, its predators and its habitat. Our objective was to determine how disturbance and species interactions affect the co-occurrence probabilities of an endangered toad and recently introduced non-native predators in stream breeding habitats. For this, we determined statistical support for alternative processes that could affect co-occurrence frequency in the system.</p><p><strong>3.</strong> We collected occurrence data at stream segments in two watersheds where streams were largely ephemeral and one watershed dominated by perennial streams. Co-occurrence probabilities of toads with non-native predators were related to disturbance frequency, with low co-occurrence in the ephemeral watershed and high co-occurrence in the perennial watershed. This occurred because once predators were established at a site, they were rarely lost from the site except in cases when the site dried out. Once dry sites became suitable again, toads colonized them much more rapidly than predators, creating a period of predator-free space.</p><p><strong>4.</strong> We attribute the dynamics to a storage effect, where toads persisting outside the stream environment during periods of drought rapidly colonized sites when they become suitable again. Our results support that even in highly connected stream networks, temporal disturbance can structure frequencies with which breeding amphibians encounter non-native predators.</p><p><strong>5.</strong> Dynamic multi-state occupancy models are a powerful tool for rigorously examining hypotheses about inter-species and species–habitat interactions. In contrast to previous methods that infer dynamic processes based on static patterns in occupancy, the approach we took allows the dynamic processes that determine species–species and species–habitat interactions to be directly estimated.</p>","language":"English","publisher":"Wiley","publisherLocation":"Hoboken, NJ","doi":"10.1111/j.1365-2656.2012.02001.x","usgsCitation":"Miller, D., Brehme, C.S., Hines, J., Nichols, J., and Fisher, R.N., 2012, Joint estimation of habitat dynamics and species interactions: Disturbance reduces co-occurrence of non-native predators with an endangered toad: Journal of Animal Ecology, v. 81, no. 6, p. 1288-1297, https://doi.org/10.1111/j.1365-2656.2012.02001.x.","productDescription":"10 p.","startPage":"1288","endPage":"1297","numberOfPages":"10","ipdsId":"IP-029983","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true},{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":474270,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1365-2656.2012.02001.x","text":"Publisher Index Page"},{"id":263103,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":263102,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-2656.2012.02001.x"}],"volume":"81","issue":"6","noUsgsAuthors":false,"publicationDate":"2012-06-15","publicationStatus":"PW","scienceBaseUri":"50a3b9d8e4b0855e233c0716","contributors":{"authors":[{"text":"Miller, David A.W.","contributorId":19423,"corporation":false,"usgs":true,"family":"Miller","given":"David A.W.","affiliations":[],"preferred":false,"id":468795,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brehme, Cheryl S. 0000-0001-8904-3354 cbrehme@usgs.gov","orcid":"https://orcid.org/0000-0001-8904-3354","contributorId":3419,"corporation":false,"usgs":true,"family":"Brehme","given":"Cheryl","email":"cbrehme@usgs.gov","middleInitial":"S.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":468793,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hines, James E. jhines@usgs.gov","contributorId":3506,"corporation":false,"usgs":true,"family":"Hines","given":"James E.","email":"jhines@usgs.gov","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":468794,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nichols, James D. 0000-0002-7631-2890 jnichols@usgs.gov","orcid":"https://orcid.org/0000-0002-7631-2890","contributorId":405,"corporation":false,"usgs":true,"family":"Nichols","given":"James D.","email":"jnichols@usgs.gov","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":468791,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Fisher, Robert N. 0000-0002-2956-3240 rfisher@usgs.gov","orcid":"https://orcid.org/0000-0002-2956-3240","contributorId":1529,"corporation":false,"usgs":true,"family":"Fisher","given":"Robert","email":"rfisher@usgs.gov","middleInitial":"N.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":468792,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70048594,"text":"70048594 - 2012 - 2011 Kiwikiu (Maui Parrotbill) and Maui 'Alauahio abundance estimates and the effect of sampling effort on power to detect a trend","interactions":[],"lastModifiedDate":"2020-09-27T19:12:09.873924","indexId":"70048594","displayToPublicDate":"2012-11-01T10:33:00","publicationYear":"2012","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":4,"text":"Other Government Series"},"seriesNumber":"HCSU-035","title":"2011 Kiwikiu (Maui Parrotbill) and Maui 'Alauahio abundance estimates and the effect of sampling effort on power to detect a trend","docAbstract":"<p>The Kiwikiu (<i>Pseudonestor xanthophrys</i>), also called the Maui Parrotbill, is an endangered, \nforest bird found only in high elevation, wet forest of the eastern portion of Maui Island. Recent \nsurveys, conducted at five year intervals, have revealed wide variation in abundance estimates \n(Camp et al. 2009). Effective management and conservation requires accurate estimates of \nabundance, which is difficult for rare species such as the Kiwikiu because low density leads to \nfew observations, resulting in low sample size and high uncertainty in abundance estimates. In \naddition to being rare, they occur in remote, difficult to access terrain, which makes them \ndifficult to detect and further reduces the accuracy of counts.</p>\n<br/>\n<p>The Maui `Alauahio (<i>Paroreomyza montana</i>), sometimes called the Maui Creeper, historically \noccupied the entire island of Maui (Gorresen et al. 2009). It has since been extirpated from\nmuch of its original habitat and now occurs in forested areas of East Maui where its habitat \noverlaps with that of the Kiwikiu. Though they share the same habitat, the `Alauahio is much \nmore abundant—by more than two orders of magnitude—and occurs over a wider range than \nthe Kiwikiu. </p>\n<br/>\n<p>Both species appear to have no statistically significant population trend from 1980–2001, but \nabundance estimates vary widely from survey to survey and have wide uncertainties (Camp et \nal. 2009). Ideally survey design should result in estimates precise enough to be able to detect \nsignificant declines in abundance that may trigger management intervention.</p>\n<br/>\n<p>We wished to improve the accuracy of Kiwikiu abundance estimates and the ability to detect \nsignificant trends in abundance. To that end, in 2011, repeated point count surveys were \nconducted across the Kiwikiu range, excluding Haleakalā National Park (Figure 1). The \nincreased sampling effort increases sample size and improves the precision of estimates, and \nrepeat samples also allowed us to partition within-year and between-year variation in surveys, \nincreasing the statistical power to detect trends.</p>","language":"English","publisher":"University of Hawai'i at Hilo","publisherLocation":"Hilo, HI","usgsCitation":"Brinck, K., Camp, R., Gorresen, P.M., Leonard, D., Mounce, H.L., Iknayan, K.J., and Paxton, E., 2012, 2011 Kiwikiu (Maui Parrotbill) and Maui 'Alauahio abundance estimates and the effect of sampling effort on power to detect a trend, iii, 11 p.","productDescription":"iii, 11 p.","numberOfPages":"16","ipdsId":"IP-041631","costCenters":[{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true}],"links":[{"id":279164,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":278393,"type":{"id":15,"text":"Index Page"},"url":"https://hilo.hawaii.edu/hcsu/publications.php"}],"country":"United States","state":"Hawaii","otherGeospatial":"Haleakala National Park, Kipahulu Valley, Maui","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -156.275743,20.686593 ], [ -156.275743,20.810503 ], [ -156.05185,20.810503 ], [ -156.05185,20.686593 ], [ -156.275743,20.686593 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"528c9671e4b0c629af44dcb4","contributors":{"authors":[{"text":"Brinck, Kevin W.","contributorId":78215,"corporation":false,"usgs":true,"family":"Brinck","given":"Kevin W.","affiliations":[],"preferred":false,"id":485166,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Camp, Richard J.","contributorId":27392,"corporation":false,"usgs":true,"family":"Camp","given":"Richard J.","affiliations":[],"preferred":false,"id":485163,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gorresen, P. Marcos mgorresen@usgs.gov","contributorId":37020,"corporation":false,"usgs":true,"family":"Gorresen","given":"P.","email":"mgorresen@usgs.gov","middleInitial":"Marcos","affiliations":[],"preferred":false,"id":485164,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Leonard, David L.","contributorId":105191,"corporation":false,"usgs":true,"family":"Leonard","given":"David L.","affiliations":[],"preferred":false,"id":485167,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Mounce, Hanna L.","contributorId":106004,"corporation":false,"usgs":true,"family":"Mounce","given":"Hanna","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":485168,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Iknayan, Kelly J.","contributorId":77835,"corporation":false,"usgs":true,"family":"Iknayan","given":"Kelly","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":485165,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Paxton, Eben H. 0000-0001-5578-7689 epaxton@usgs.gov","orcid":"https://orcid.org/0000-0001-5578-7689","contributorId":438,"corporation":false,"usgs":true,"family":"Paxton","given":"Eben H.","email":"epaxton@usgs.gov","affiliations":[{"id":5049,"text":"Pacific Islands Ecosys Research Center","active":true,"usgs":true},{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true}],"preferred":false,"id":485162,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70177891,"text":"70177891 - 2012 - Eruptive history of Mount Katmai, Alaska","interactions":[],"lastModifiedDate":"2019-05-30T12:27:25","indexId":"70177891","displayToPublicDate":"2012-11-01T02:30:00","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1820,"text":"Geosphere","active":true,"publicationSubtype":{"id":10}},"title":"Eruptive history of Mount Katmai, Alaska","docAbstract":"<p id=\"p-1\">Mount Katmai has long been recognized for its caldera collapse during the great pyroclastic eruption of 1912 (which vented 10 km away at Novarupta in the Valley of Ten Thousand Smokes), but little has previously been reported about the geology of the remote ice-clad stratovolcano itself. Over several seasons, we reconnoitered all parts of the edifice and sampled most of the lava flows exposed on its flanks and caldera rim. The precipitous inner walls of the 1912 caldera remain too unstable for systematic sampling; so we provide instead a photographic and interpretive record of the wall sequences exposed. In contrast to the several andesite-dacite stratovolcanoes nearby, products of Mount Katmai range from basalt to rhyolite. Before collapse in 1912, there were two overlapping cones with separate vent complexes and craters; their products are here divided into eight sequences of lava flows, agglutinates, and phreatomagmatic ejecta. Latest Pleistocene and Holocene eruptive units include rhyodacite and rhyolite lava flows along the south rim; a major 22.8-ka rhyolitic plinian fall and ignimbrite deposit; a dacite-andesite zoned scoria fall; a thick sheet of dacite agglutinate that filled a paleocrater and draped the west side of the edifice; unglaciated leveed dacite lava flows on the southeast slope; and the Horseshoe Island dacite dome that extruded on the caldera floor after collapse. Pre-collapse volume of the glaciated Katmai edifice was &sim;30 km<sup>3</sup>, and&nbsp;<i>eruptive</i>&nbsp;volume is estimated to have been 57&plusmn;13 km<sup>3</sup>. The latter figure includes &sim;40&plusmn;6 km<sup>3</sup>&nbsp;for the edifice, 5&plusmn;2 km<sup>3</sup>&nbsp;for off-edifice dacite pyroclastic deposits, and 12&plusmn;5 km<sup>3</sup>&nbsp;for the 22.8-ka rhyolitic pyroclastic deposits. To these can be added 13.5 km<sup>3</sup>&nbsp;of magma that erupted at Novarupta in 1912, all or much of which is inferred to have been withdrawn from beneath Mount Katmai. The oldest part of the edifice exposed is a basaltic cone, which gave a&nbsp;<sup>40</sup>Ar/<sup>39</sup>Ar plateau age of 89 &plusmn; 25 ka.</p>\n<p id=\"p-2\">The seismic record of caldera collapse includes 14 earthquakes of magnitude 6.0&ndash;7.0. By combining the times of earthquakes, the hours of downwind plinian-fall episodes from Novarupta, and the stratigraphic record of hydrothermal explosion breccia and phreatic mud layers ejected around the caldera rim and intercalated within the Novarupta pumice-fall sequence, it can be inferred that collapse began in the 11th hour of the 60-h-long eruption and continued fitfully for 3.5 days. Several big landslides and pumiceous debris flows shaken loose by the collapse-related seismicity are bracketed in time by their levels of intercalation within the Novarupta pumice-fall sequence. An intracaldera lake was &sim;10 m deep by 1916, drained away in 1923, and has since deepened progressively to &sim;250 m today.</p>\n<p id=\"p-3\">Compositionally, products of Mount Katmai represent an ordinary medium-K arc array, both tholeiitic and calcalkaline, that extends from 51.6% to 72.3% SiO<sub>2</sub>. Values of&nbsp;<sup>87</sup>Sr/<sup>86</sup>Sr range from 0.70335 to 0.70372, correlating loosely with fractionation indices. The 5&ndash;6 km<sup>3</sup>&nbsp;of continuously zoned andesite-dacite magma (58%&ndash;68% SiO<sub>2</sub>) that erupted at Novarupta in 1912 was withdrawn from beneath Mount Katmai and bears close compositional affinity with products of that edifice, not with pre-1912 products of the adjacent Trident cluster. Evidence is presented that the 7&ndash;8 km<sup>3</sup>&nbsp;of high-silica rhyolite (77% SiO<sub>2</sub>) released in 1912 is unlikely to have been stored under Novarupta or Trident. Pre-eruptive contiguity with the andesite-dacite reservoir is suggested by (1) eruption of &sim;3 km<sup>3</sup>&nbsp;of rhyolite magma first, followed by mutual mingling in fluctuating proportions; (2) thermal and redox continuity of the whole zoned sequence despite the wide compositional gap; (3) Nd, Sr, O isotopic, and rare earth element (REE) affinities of the whole array; (4) compositional continuity of the nearly aphyric rhyolite with the glass (melt) phase of the phenocryst-rich dacite; and (5) phase-equilibrium experiments that indicate similar shallow pre-eruptive storage depths (3&ndash;6 km) for rhyolite, dacite, and andesite.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/GES00817.1","usgsCitation":"Hildreth, E., and Fierstein, J., 2012, Eruptive history of Mount Katmai, Alaska: Geosphere, v. 8, no. 6, p. 1527-1567, https://doi.org/10.1130/GES00817.1.","productDescription":"41 p.","startPage":"1527","endPage":"1567","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-040917","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":474283,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1130/ges00817.1","text":"Publisher Index Page"},{"id":330410,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -156.20361328125,\n              57.70414723434193\n            ],\n            [\n              -156.20361328125,\n              58.87058467868075\n            ],\n            [\n              -153.6767578125,\n              58.87058467868075\n            ],\n            [\n              -153.6767578125,\n              57.70414723434193\n            ],\n            [\n              -156.20361328125,\n              57.70414723434193\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"8","issue":"6","publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5811c0f5e4b0f497e79a5a91","contributors":{"authors":[{"text":"Hildreth, Edward 0000-0002-7925-4251 hildreth@usgs.gov","orcid":"https://orcid.org/0000-0002-7925-4251","contributorId":146999,"corporation":false,"usgs":true,"family":"Hildreth","given":"Edward","email":"hildreth@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":652049,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fierstein, Judith 0000-0001-8024-1426 jfierstn@usgs.gov","orcid":"https://orcid.org/0000-0001-8024-1426","contributorId":147000,"corporation":false,"usgs":true,"family":"Fierstein","given":"Judith","email":"jfierstn@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":652050,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70040448,"text":"sir20125081 - 2012 - South Fork Shenandoah River habitat-flow modeling to determine ecological and recreational characteristics during low-flow periods","interactions":[],"lastModifiedDate":"2012-10-22T17:16:26","indexId":"sir20125081","displayToPublicDate":"2012-10-22T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2012-5081","title":"South Fork Shenandoah River habitat-flow modeling to determine ecological and recreational characteristics during low-flow periods","docAbstract":"The ecological habitat requirements of aquatic organisms and recreational streamflow requirements of the South Fork Shenandoah River were investigated by the U.S. Geological Survey in cooperation with the Central Shenandoah Valley Planning District Commission, the Northern Shenandoah Valley Regional Commission, and Virginia Commonwealth University. Physical habitat simulation modeling was conducted to examine flow as a major determinant of physical habitat availability and recreation suitability using field-collected hydraulic habitat variables such as water depth, water velocity, and substrate characteristics. Fish habitat-suitability criteria specific to the South Fork Shenandoah River were developed for sub-adult and adult smallmouth bass (Micropterus dolomieu), juvenile and sub-adult redbreast sunfish (Lepomis auritus), spotfin or satinfin shiner (Cyprinella spp), margined madtom (Noturus insignis),and river chub (Nocomis micropogon). Historic streamflow statistics for the summer low-flow period during July, August, and September were used as benchmark low-flow conditions and compared to habitat simulation results and water-withdrawal scenarios based on 2005 withdrawal data. \r\nTo examine habitat and recreation characteristics during droughts, daily fish habitat or recreation suitability values were simulated for 2002 and other selected drought years. Recreation suitability during droughts was extremely low, because the modeling demonstrated that suitable conditions occur when the streamflows are greater than the 50th percentile flow for July, August, and September. Habitat availability for fish is generally at a maximum when streamflows are between the 75th and 25th percentile flows for July, August, and September. Time-series results for drought years, such as 2002, showed that extreme low-flow conditions less than the 5th percentile of flow for July, August, and September corresponded to below-normal habitat availability for both game and nongame fish in the upper section of the river. For the middle section near Luray, margined madtom and river chub habitat area were below normal, whereas adult and sub-adult smallmouth bass habitat area remained near the median expected available habitat. In the lower section near Front Royal, time-series results for adult smallmouth bass, sub-adult smallmouth bass, and margined madtom habitat were below normal when streamflows were below the 10th percentile flow for July, August, and September. All other species of fish had habitat availability within the normal range for July, August, and September. \r\nWater-conservation scenarios representing a 50 percent water-withdrawal reduction resulted in game fish habitat availability within the normal range for habitat in upper and middle river sections, instead of below normal conditions which were observed during the 2002 drought. The 50 percent water-withdrawal reduction had no measurable effect on recreation. For nongame fish such as river chub, a 20 percent withdrawal reduction resulted in habitat availability within the normal range for habitat in the upper and middle river sections. Increased water-use scenarios representing a 5 percent increase in water withdrawals resulted in a slight reduction in habitat availability; however, increased withdrawals of 20 and 50 percent resulted in habitat availability substantially less than the 25th habitat percentile, or below normal. Habitat reductions were more pronounced when flows were lower than the 10th percentile flow for July, August, and September. \r\nThe results show that for normal or wet years, increased water withdrawals are not likely to correspond with extensive habitat loss for game fish or nongame fish. During drought years, however, a 20 to 50 percent increase in water withdrawals may result in below normal habitat availability for game fish throughout the river and nongame fish in the upper and middle sections of the river. These simulations of rare historic drought conditions, such as those observed in 2002, serve as a baseline for development of ecological flow thresholds for drought planning.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20125081","collaboration":"Prepared in cooperation with the Northern Shenandoah Valley Regional Commission, Central Shenandoah Valley Planning District Commission, and Virginia Commonwealth University","usgsCitation":"Krstolic, J.L., and Ramey, R.C., 2012, South Fork Shenandoah River habitat-flow modeling to determine ecological and recreational characteristics during low-flow periods: U.S. Geological Survey Scientific Investigations Report 2012-5081, x, 63 p., https://doi.org/10.3133/sir20125081.","productDescription":"x, 63 p.","numberOfPages":"78","costCenters":[{"id":614,"text":"Virginia Water Science Center","active":true,"usgs":true}],"links":[{"id":262752,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir_2012_5081.gif"},{"id":262743,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2012/5081/","linkFileType":{"id":5,"text":"html"}},{"id":262744,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2012/5081/pdf/sir2012-5081.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Virginia;West Virginia","county":"Augusta","city":"Lynwood;Front Royal;Luray","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -79.4652,37.8018 ], [ -79.4652,39.5081 ], [ -77.7355,39.5081 ], [ -77.7355,37.8018 ], [ -79.4652,37.8018 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50866d1be4b0a1435286d65a","contributors":{"authors":[{"text":"Krstolic, Jennifer L. 0000-0003-2253-9886 jkrstoli@usgs.gov","orcid":"https://orcid.org/0000-0003-2253-9886","contributorId":3677,"corporation":false,"usgs":true,"family":"Krstolic","given":"Jennifer","email":"jkrstoli@usgs.gov","middleInitial":"L.","affiliations":[{"id":614,"text":"Virginia Water Science Center","active":true,"usgs":true},{"id":37759,"text":"VA/WV Water Science Center","active":true,"usgs":true}],"preferred":true,"id":468341,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ramey, R. Clay","contributorId":98161,"corporation":false,"usgs":true,"family":"Ramey","given":"R.","email":"","middleInitial":"Clay","affiliations":[],"preferred":false,"id":468342,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70040341,"text":"70040341 - 2012 - Analysis of the trap gene provides evidence for the role of elevation and vector abundance in the genetic diversity of Plasmodium relictum in Hawaii","interactions":[],"lastModifiedDate":"2013-11-15T10:49:15","indexId":"70040341","displayToPublicDate":"2012-10-17T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2650,"text":"Malaria Journal","active":true,"publicationSubtype":{"id":10}},"title":"Analysis of the trap gene provides evidence for the role of elevation and vector abundance in the genetic diversity of Plasmodium relictum in Hawaii","docAbstract":"Background: The avian disease system in Hawaii offers an ideal opportunity to investigate host-pathogen interactions in a natural setting. Previous studies have recognized only a single mitochondrial lineage of avian malaria (Plasmodium relictum) in the Hawaiian Islands, but cloning and sequencing of nuclear genes suggest a higher degree of genetic diversity. Methods: In order to evaluate genetic diversity of P. relictum at the population level and further understand host-parasite interactions, a modified single-base extension (SBE) method was used to explore spatial and temporal distribution patterns of single nucleotide polymorphisms (SNPs) in the thrombospondin-related anonymous protein (trap) gene of P. relictum infections from 121 hatch-year amakihi (Hemignathus virens) on the east side of Hawaii Island. Results: Rare alleles and mixed infections were documented at three of eight SNP loci; this is the first documentation of genetically diverse infections of P. relictum at the population level in Hawaii. Logistic regression revealed that the likelihood of infection with a rare allele increased at low-elevation, but decreased as mosquito capture rates increased. The inverse relationship between vector capture rates and probability of infection with a rare allele is unexpected given current theories of epidemiology developed in human malarias. Conclusions: The results of this study suggest that pathogen diversity in Hawaii may be driven by a complex interaction of factors including transmission rates, host immune pressures, and parasite-parasite competition.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Malaria Journal","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"BioMed Central Ltd.","publisherLocation":"London, U.K.","doi":"10.1186/1475-2875-11-305","usgsCitation":"Farias, M.E., Atkinson, C.T., LaPointe, D.A., and Jarvi, S.I., 2012, Analysis of the trap gene provides evidence for the role of elevation and vector abundance in the genetic diversity of Plasmodium relictum in Hawaii: Malaria Journal, v. 11, no. 1, 14 p.; Article 305, https://doi.org/10.1186/1475-2875-11-305.","productDescription":"14 p.; Article 305","costCenters":[{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true}],"links":[{"id":474309,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1186/1475-2875-11-305","text":"Publisher Index Page"},{"id":262673,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":262644,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1186/1475-2875-11-305","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Hawai'i","volume":"11","issue":"1","noUsgsAuthors":false,"publicationDate":"2012-09-03","publicationStatus":"PW","scienceBaseUri":"507edfb5e4b022001d87bb45","contributors":{"authors":[{"text":"Farias, Margaret E.M.","contributorId":74624,"corporation":false,"usgs":true,"family":"Farias","given":"Margaret","email":"","middleInitial":"E.M.","affiliations":[],"preferred":false,"id":468121,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Atkinson, Carter T. 0000-0002-4232-5335 catkinson@usgs.gov","orcid":"https://orcid.org/0000-0002-4232-5335","contributorId":1124,"corporation":false,"usgs":true,"family":"Atkinson","given":"Carter","email":"catkinson@usgs.gov","middleInitial":"T.","affiliations":[{"id":5049,"text":"Pacific Islands Ecosys Research Center","active":true,"usgs":true},{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true}],"preferred":true,"id":468118,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"LaPointe, Dennis A.","contributorId":63900,"corporation":false,"usgs":true,"family":"LaPointe","given":"Dennis","email":"","middleInitial":"A.","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":468120,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jarvi, Susan I.","contributorId":47748,"corporation":false,"usgs":true,"family":"Jarvi","given":"Susan","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":468119,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70040345,"text":"70040345 - 2012 - A two-phase sampling design for increasing detections of rare species in occupancy surveys","interactions":[],"lastModifiedDate":"2012-10-17T17:16:17","indexId":"70040345","displayToPublicDate":"2012-10-16T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2717,"text":"Methods in Ecology and Evolution","active":true,"publicationSubtype":{"id":10}},"title":"A two-phase sampling design for increasing detections of rare species in occupancy surveys","docAbstract":"1. Occupancy estimation is a commonly used tool in ecological studies owing to the ease at which data can be collected and the large spatial extent that can be covered. One major obstacle to using an occupancy-based approach is the complications associated with designing and implementing an efficient survey. These logistical challenges become magnified when working with rare species when effort can be wasted in areas with none or very few individuals. 2. Here, we develop a two-phase sampling approach that mitigates these problems by using a design that places more effort in areas with higher predicted probability of occurrence. We compare our new sampling design to traditional single-season occupancy estimation under a range of conditions and population characteristics. We develop an intuitive measure of predictive error to compare the two approaches and use simulations to assess the relative accuracy of each approach. 3. Our two-phase approach exhibited lower predictive error rates compared to the traditional single-season approach in highly spatially correlated environments. The difference was greatest when detection probability was high (0&middot;75) regardless of the habitat or sample size. When the true occupancy rate was below 0&middot;4 (0&middot;05-0&middot;4), we found that allocating 25% of the sample to the first phase resulted in the lowest error rates. 4. In the majority of scenarios, the two-phase approach showed lower error rates compared to the traditional single-season approach suggesting our new approach is fairly robust to a broad range of conditions and design factors and merits use under a wide variety of settings. 5. Synthesis and applications. Conservation and management of rare species are a challenging task facing natural resource managers. It is critical for studies involving rare species to efficiently allocate effort and resources as they are usually of a finite nature. We believe our approach provides a framework for optimal allocation of effort while maximizing the information content of the data in an attempt to provide the highest conservation value per unit of effort.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Methods in Ecology and Evolution","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Wiley","publisherLocation":"Hoboken, NJ","doi":"10.1111/j.2041-210X.2012.00201.x","usgsCitation":"Pacifici, K., Dorazio, R.M., and Dorazio, M.J., 2012, A two-phase sampling design for increasing detections of rare species in occupancy surveys: Methods in Ecology and Evolution, v. 3, no. 4, p. 721-730, https://doi.org/10.1111/j.2041-210X.2012.00201.x.","productDescription":"10 p.","startPage":"721","endPage":"730","costCenters":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"links":[{"id":474315,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.2041-210x.2012.00201.x","text":"Publisher Index Page"},{"id":262635,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":262630,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.2041-210X.2012.00201.x"}],"country":"United States","volume":"3","issue":"4","noUsgsAuthors":false,"publicationDate":"2012-04-10","publicationStatus":"PW","scienceBaseUri":"507edf98e4b022001d87bb39","contributors":{"authors":[{"text":"Pacifici, Krishna","contributorId":26564,"corporation":false,"usgs":false,"family":"Pacifici","given":"Krishna","email":"","affiliations":[{"id":7091,"text":"North Carolina State University","active":true,"usgs":false}],"preferred":false,"id":468129,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dorazio, Robert M. 0000-0003-2663-0468 bob_dorazio@usgs.gov","orcid":"https://orcid.org/0000-0003-2663-0468","contributorId":1668,"corporation":false,"usgs":true,"family":"Dorazio","given":"Robert","email":"bob_dorazio@usgs.gov","middleInitial":"M.","affiliations":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"preferred":false,"id":468128,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dorazio, Michael J.","contributorId":73052,"corporation":false,"usgs":true,"family":"Dorazio","given":"Michael","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":468130,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70040315,"text":"70040315 - 2012 - American alligator digestion rate of blue crabs and its implications for stomach contents analysis","interactions":[],"lastModifiedDate":"2012-10-17T17:16:17","indexId":"70040315","displayToPublicDate":"2012-10-16T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1337,"text":"Copeia","active":true,"publicationSubtype":{"id":10}},"title":"American alligator digestion rate of blue crabs and its implications for stomach contents analysis","docAbstract":"Stomach contents analysis (SCA) provides a snap-shot observation of a consumer's diet. Interpretation of SCA data can be complicated by many factors, including variation in gastric residence times and digestion rates among prey taxa. Although some SCA methods are reported to efficiently remove all stomach contents, the effectiveness of these techniques has rarely been tested for large irregular shaped prey with hard exoskeletons. We used a controlled feeding trial to estimate gastric residency time and decomposition rate of a large crustacean prey item, the Blue Crab (<i>Callinectes sapidus</i>), which is consumed by American Alligators (<i>Alligator mississippiensis</i>), an abundant apex predator in coastal habitats of the southeastern United States. The decomposition rate of C. <i>sapidus</i> in the stomachs of A. <i>mississippiensis</i> followed a predictable pattern, and some crab pieces remained in stomachs for at least 14 days. We also found that certain portions of C. <i>sapidus</i> were prone to becoming caught within the stomach or esophagus, meaning not all crab parts are consistently recovered using gastric lavage techniques. However, because the state of decomposition of crabs was predictable, it is possible to estimate time since consumption for crabs recovered from wild alligators. This information, coupled with a detailed understanding of crab distributions and alligator movement tactics could help elucidate patterns of cross-ecosystem foraging by the American Alligator in coastal habitats","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Copeia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1643/CE-11-177","usgsCitation":"Nifong, J., Rosenblatt, A.E., Johnson, N.A., Barichivich, W., Silliman, B., and Heithaus, M.R., 2012, American alligator digestion rate of blue crabs and its implications for stomach contents analysis: Copeia, v. 2012, no. 3, p. 419-423, https://doi.org/10.1643/CE-11-177.","productDescription":"4 p.","startPage":"419","endPage":"423","costCenters":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"links":[{"id":262642,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":262631,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1643/CE-11-177"}],"country":"United States","volume":"2012","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"507edfa2e4b022001d87bb3d","contributors":{"authors":[{"text":"Nifong, James C.","contributorId":23377,"corporation":false,"usgs":true,"family":"Nifong","given":"James C.","affiliations":[],"preferred":false,"id":468057,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rosenblatt, Adam E.","contributorId":84206,"corporation":false,"usgs":true,"family":"Rosenblatt","given":"Adam","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":468059,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Johnson, Nathan A. 0000-0001-5167-1988 najohnson@usgs.gov","orcid":"https://orcid.org/0000-0001-5167-1988","contributorId":4175,"corporation":false,"usgs":true,"family":"Johnson","given":"Nathan","email":"najohnson@usgs.gov","middleInitial":"A.","affiliations":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":468054,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Barichivich, William 0000-0003-1103-6861","orcid":"https://orcid.org/0000-0003-1103-6861","contributorId":21405,"corporation":false,"usgs":true,"family":"Barichivich","given":"William","affiliations":[],"preferred":false,"id":468056,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Silliman, Brian","contributorId":11051,"corporation":false,"usgs":true,"family":"Silliman","given":"Brian","affiliations":[],"preferred":false,"id":468055,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Heithaus, Michael R.","contributorId":42828,"corporation":false,"usgs":true,"family":"Heithaus","given":"Michael","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":468058,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70040225,"text":"ds700 - 2012 - Data resources for the Wyoming Landscape Conservation Initiative (WLCI) Integrated Assessment (IA)","interactions":[],"lastModifiedDate":"2013-03-08T12:58:23","indexId":"ds700","displayToPublicDate":"2012-10-09T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":310,"text":"Data Series","code":"DS","onlineIssn":"2327-638X","printIssn":"2327-0271","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"700","title":"Data resources for the Wyoming Landscape Conservation Initiative (WLCI) Integrated Assessment (IA)","docAbstract":"The data contained in this report were compiled, modified, and analyzed for the Wyoming Landscape Conservation Initiative (WLCI) Integrated Assessment (IA). The WLCI is a long-term science based effort to assess and enhance aquatic and terrestrial habitats at a landscape scale in southwest Wyoming while facilitating responsible energy development through local collaboration and partnerships. The IA is an integrated synthesis and analysis of WLCI resource values based on best available data and information collected from multiple agencies and organizations. It is a support tool for landscape-scale conservation planning and evaluation, and a data and analysis resource that can be used for addressing specific management questions. The IA analysis was conducted using a Geographic Information System in a raster (that is, a grid) environment using a cell size of 30 meters. To facilitate the interpretation of the data in a regional context, mean values were summarized and displayed at the subwatershed unit (WLCI subwatersheds were subset from the National Hydrography Dataset, Hydrologic Unit Code 12/Level 6). A dynamic mapping platform, accessed via the WLCI webpage at <a href=\"http://www.wlci.gov\"><i>http://www.wlci.gov</i></a> is used to display the mapped information, and to access underlying resource values that were combined to produce the final mapped results. The raster data used in the IA are provided here for use by interested parties to conduct additional analyses and can be accessed via the WLCI webpage. This series contains 74 spatial data sets: WLCI subwatersheds (vector) and 73 geotiffs (raster) that are segregated into the major categories of Multicriteria Index (including Resource Index and Condition), Change Agents, and Future Change. The Total Multicriteria Index is composed of the Aquatic Multicriteria Index and the Terrestrial Multicriteria Index. The Aquatic Multicriteria Index is composed of the Aquatic Resource Index and the Aquatic Condition. The Aquatic Resource Index is composed of the following components: Groundwater, Special Management Areas, and Priority Areas. The Aquatic Condition is composed of the following components: Focal Species, Species of Concern, Focal Ecosystems, and Proper Functioning Condition. The Terrestrial Multicriteria Index is composed of the Terrestrial Resource Index and the Terrestrial Condition. The Terrestrial Resource Index is composed of the following components: Special Management Areas, Agriculture, and Priority Areas. The Terrestrial Condition is composed of the following components: Focal Species, Big Game, Species of Concern, Rare Plants, and Focal Ecosystems. The Change Agents are composed the following components: Roads, Energy, Mines, and Urban. The Future Change is composed of the following components: Oil-Gas-Coal, Wind, Minerals, Climate-Temperature, Invasive Species, and Urban.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ds700","usgsCitation":"Assal, T.J., Garman, S.L., Bowen, Z.H., Anderson, P.J., Manier, D.J., and McDougal, R., 2012, Data resources for the Wyoming Landscape Conservation Initiative (WLCI) Integrated Assessment (IA): U.S. Geological Survey Data Series 700, Download Data: 1 p.; Downloads Directory, https://doi.org/10.3133/ds700.","productDescription":"Download Data: 1 p.; Downloads Directory","onlineOnly":"Y","additionalOnlineFiles":"Y","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":262483,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/ds/700/","linkFileType":{"id":1,"text":"pdf"}},{"id":262485,"rank":9999,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/ds/700/downloads/","linkFileType":{"id":5,"text":"html"}},{"id":262484,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/ds/700/downloads/DS700_links_for_webpage.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":262492,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ds_700.jpg"}],"country":"United States","state":"Wyoming","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -111.0569,41.0000 ], [ -111.0569,45.0000 ], [ -104.0500,45.0000 ], [ -104.0500,41.0000 ], [ -111.0569,41.0000 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50d9ef1fe4b07a5aecdefbe0","contributors":{"authors":[{"text":"Assal, Timothy J. 0000-0001-6342-2954 assalt@usgs.gov","orcid":"https://orcid.org/0000-0001-6342-2954","contributorId":2203,"corporation":false,"usgs":true,"family":"Assal","given":"Timothy","email":"assalt@usgs.gov","middleInitial":"J.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":467928,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Garman, Steven L. 0000-0002-9032-9074 slgarman@usgs.gov","orcid":"https://orcid.org/0000-0002-9032-9074","contributorId":3741,"corporation":false,"usgs":true,"family":"Garman","given":"Steven","email":"slgarman@usgs.gov","middleInitial":"L.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":467930,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bowen, Zachary H. 0000-0002-8656-1831 bowenz@usgs.gov","orcid":"https://orcid.org/0000-0002-8656-1831","contributorId":821,"corporation":false,"usgs":true,"family":"Bowen","given":"Zachary","email":"bowenz@usgs.gov","middleInitial":"H.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":467927,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Anderson, Patrick J. 0000-0003-2281-389X andersonpj@usgs.gov","orcid":"https://orcid.org/0000-0003-2281-389X","contributorId":3590,"corporation":false,"usgs":true,"family":"Anderson","given":"Patrick","email":"andersonpj@usgs.gov","middleInitial":"J.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":467929,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Manier, Daniel J. 0000-0002-1105-1327 manierd@usgs.gov","orcid":"https://orcid.org/0000-0002-1105-1327","contributorId":4589,"corporation":false,"usgs":true,"family":"Manier","given":"Daniel","email":"manierd@usgs.gov","middleInitial":"J.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":false,"id":467931,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"McDougal, Robert R.","contributorId":53418,"corporation":false,"usgs":true,"family":"McDougal","given":"Robert R.","affiliations":[],"preferred":false,"id":467932,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70003748,"text":"70003748 - 2012 - Black-footed ferret digging activity in summer","interactions":[],"lastModifiedDate":"2012-10-06T17:16:14","indexId":"70003748","displayToPublicDate":"2012-10-05T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3746,"text":"Western North American Naturalist","onlineIssn":"1944-8341","printIssn":"1527-0904","active":true,"publicationSubtype":{"id":10}},"title":"Black-footed ferret digging activity in summer","docAbstract":"Black-footed ferrets (Mustela nigripes) excavate soil from prairie dog (Cynomys spp.) burrows, thereby creating characteristic soil deposits at burrow openings. These soil deposits have been observed only rarely in summer. We monitored adult ferrets during June&ndash;October of the years 2007 and 2008 on a 452-ha colony of black-tailed prairie dogs (Cynomys ludovicianus) in the Conata Basin, South Dakota. We located and identified ferret excavations during nighttime spotlight surveys for ferrets and daytime sampling of prairie dog burrow openings around locations where ferrets were located via spotlight. We accumulated 48 observations of in-process or recently completed ferret excavations during spotlight surveys (21 in 2007, 27 in 2008) and located 51 diggings during daytime burrow sampling (25 in 2007, 26 in 2008). We located diggings during 5.5% of spotlight observations, most frequently in July&ndash;August. These results collectively suggest ferrets may frequently excavate soil in summer, because prairie dogs frequently use soil to plug burrow openings and tunnels in defense against ferrets. Prairie dogs might frequently destroy soil deposits left by ferrets during summer, thereby reducing detection of diggings by biologists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Western North American Naturalist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Brigham Young University","publisherLocation":"Provo, UT","doi":"10.3398/064.072.0203","usgsCitation":"Eads, D., Biggins, D.E., Marsh, D., Millspaugh, J.J., and Livieri, T., 2012, Black-footed ferret digging activity in summer: Western North American Naturalist, v. 72, no. 2, p. 140-147, https://doi.org/10.3398/064.072.0203.","productDescription":"8 p.","startPage":"140","endPage":"147","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":487997,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://scholarsarchive.byu.edu/wnan/vol72/iss2/3","text":"External Repository"},{"id":262419,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":262425,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3398/064.072.0203"}],"country":"United States","state":"South Dakota","otherGeospatial":"Conata Basin","volume":"72","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50788bdee4b0cfc2d59f59f2","contributors":{"authors":[{"text":"Eads, David A.","contributorId":70234,"corporation":false,"usgs":true,"family":"Eads","given":"David A.","affiliations":[],"preferred":false,"id":348680,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Biggins, Dean E. 0000-0003-2078-671X bigginsd@usgs.gov","orcid":"https://orcid.org/0000-0003-2078-671X","contributorId":2522,"corporation":false,"usgs":true,"family":"Biggins","given":"Dean","email":"bigginsd@usgs.gov","middleInitial":"E.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":348676,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Marsh, Dustin","contributorId":31620,"corporation":false,"usgs":true,"family":"Marsh","given":"Dustin","email":"","affiliations":[],"preferred":false,"id":348679,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Millspaugh, Joshua J.","contributorId":22082,"corporation":false,"usgs":true,"family":"Millspaugh","given":"Joshua","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":348678,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Livieri, Travis M.","contributorId":16265,"corporation":false,"usgs":true,"family":"Livieri","given":"Travis M.","affiliations":[],"preferred":false,"id":348677,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70040100,"text":"70040100 - 2012 - Optimal egg size in a suboptimal environment: reproductive ecology of female Sonora mud turtles (Kinosternon sonoriense) in central Arizona, USA","interactions":[],"lastModifiedDate":"2012-09-28T17:16:18","indexId":"70040100","displayToPublicDate":"2012-09-28T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":751,"text":"Amphibia-Reptilia","active":true,"publicationSubtype":{"id":10}},"title":"Optimal egg size in a suboptimal environment: reproductive ecology of female Sonora mud turtles (Kinosternon sonoriense) in central Arizona, USA","docAbstract":"We studied the reproductive ecology of female Sonora mud turtles (Kinosternon sonoriense) at Montezuma Well, a chemically-challenging natural wetland in central Arizona, USA. Females matured between 115.5 and 125 mm carapace length (CL) and 36-54% produced eggs each year. Eggs were detected in X-radiographs from 23 April-28 September (2007-2008) and the highest proportion (56%) of adult females with eggs occurred in June and July. Clutch frequency was rarely more than once per year. Clutch size was weakly correlated with body size, ranged from 1-8 (mean = 4.96) and did not differ significantly between years. X-ray egg width ranged from 17.8-21.7 mm (mean 19.4 mm) and varied more among clutches than within. Mean X-ray egg width of a clutch did not vary significantly with CL of females, although X-ray pelvic aperture width increased with CL. We observed no evidence of a morphological constraint on egg width. In addition, greater variation in clutch size, relative to egg width, suggests that egg size is optimized in this hydrologically stable but chemically-challenging habitat. We suggest that the diversity of architectures exhibited by the turtle pelvis, and their associated lack of correspondence to taxonomic or behavioral groupings, explains some of the variation observed in egg size of turtles.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Amphibia-Reptilia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Brill","publisherLocation":"Leiden, The Netherlands","doi":"10.1163/156853812X634035","usgsCitation":"Lovich, J.E., Madrak, S.V., Drost, C.A., Monatesti, A.J., Casper, D., and Znari, M., 2012, Optimal egg size in a suboptimal environment: reproductive ecology of female Sonora mud turtles (Kinosternon sonoriense) in central Arizona, USA: Amphibia-Reptilia, v. 33, p. 161-170, https://doi.org/10.1163/156853812X634035.","productDescription":"10 p.","startPage":"161","endPage":"170","numberOfPages":"10","costCenters":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"links":[{"id":474341,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1163/156853812x634035","text":"Publisher Index Page"},{"id":262153,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":262147,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1163/156853812X634035"}],"country":"United States","state":"Arizona","volume":"33","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50662512e4b053bff18e1c01","contributors":{"authors":[{"text":"Lovich, Jeffrey E. 0000-0002-7789-2831 jeffrey_lovich@usgs.gov","orcid":"https://orcid.org/0000-0002-7789-2831","contributorId":458,"corporation":false,"usgs":true,"family":"Lovich","given":"Jeffrey","email":"jeffrey_lovich@usgs.gov","middleInitial":"E.","affiliations":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true},{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":467709,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Madrak, Sheila V.","contributorId":7403,"corporation":false,"usgs":true,"family":"Madrak","given":"Sheila","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":467711,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Drost, Charles A. 0000-0002-4792-7095 charles_drost@usgs.gov","orcid":"https://orcid.org/0000-0002-4792-7095","contributorId":3151,"corporation":false,"usgs":true,"family":"Drost","given":"Charles","email":"charles_drost@usgs.gov","middleInitial":"A.","affiliations":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"preferred":true,"id":467710,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Monatesti, Anthony J.","contributorId":103541,"corporation":false,"usgs":true,"family":"Monatesti","given":"Anthony","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":467714,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Casper, Dennis","contributorId":65346,"corporation":false,"usgs":true,"family":"Casper","given":"Dennis","email":"","affiliations":[],"preferred":false,"id":467713,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Znari, Mohammed","contributorId":42472,"corporation":false,"usgs":true,"family":"Znari","given":"Mohammed","email":"","affiliations":[],"preferred":false,"id":467712,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70040063,"text":"70040063 - 2012 - Using integrated research and interdisciplinary science: Potential benefits and challenges to managers of parks and protected areas","interactions":[],"lastModifiedDate":"2017-11-25T13:45:57","indexId":"70040063","displayToPublicDate":"2012-09-28T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3561,"text":"The George Wright Forum","active":true,"publicationSubtype":{"id":10}},"title":"Using integrated research and interdisciplinary science: Potential benefits and challenges to managers of parks and protected areas","docAbstract":"Our purpose in this paper is to build a case for utilizing interdisciplinary science to enhance the management of parks and protected areas. We suggest that interdisciplinary science is necessary for dealing with the complex issues of contemporary resource management, and that using the best available integrated scientific information be embraced and supported at all levels of agencies that manage parks and protected areas. It will take the commitment of park managers, scientists, and agency leaders to achieve the goal of implementing the results of interdisciplinary science into park management. Although such calls go back at least several decades, today interdisciplinary science is sporadically being promoted as necessary for supporting effective protected area management(e.g., Machlis et al. 1981; Kelleher and Kenchington 1991). Despite this history, rarely has \"interdisciplinary science\" been defined, its importance explained, or guidance provided on how to translate and then implement the associated research results into management actions (Tress et al. 2006; Margles et al. 2010). With the extremely complex issues that now confront protected areas (e.g., climate change influences, extinctions and loss of biodiversity, human and wildlife demographic changes, and unprecedented human population growth) information from more than one scientific discipline will need to be brought to bear in order to achieve sustained management solutions that resonate with stakeholders (Ostrom 2009). Although interdisciplinary science is not the solution to all problems, we argue that interdisciplinary research is an evolving and widely supported best practice. In the case of park and protected area management, interdisciplinary science is being driven by the increasing recognition of the complexity and interconnectedness of human and natural systems, and the notion that addressing many problems can be more rapidly advanced through interdisciplinary study and analysis.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"The George Wright Forum","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"The George Wright Society","publisherLocation":"Hancock, MI","usgsCitation":"van Riper, C., Powell, R.B., Machlis, G., van Wagtendonk, J., van Riper, C.J., von Ruschkowski, E., Schwarzbach, S.E., and Galipeau, R.E., 2012, Using integrated research and interdisciplinary science: Potential benefits and challenges to managers of parks and protected areas: The George Wright Forum, v. 29, no. 2, p. 216-226.","productDescription":"11 p.","startPage":"216","endPage":"226","costCenters":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"links":[{"id":262151,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":262148,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://www.georgewright.org/node/7397","linkFileType":{"id":5,"text":"html"}}],"volume":"29","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50662516e4b053bff18e1c19","contributors":{"authors":[{"text":"van Riper, Charles III 0000-0003-1084-5843 charles_van_riper@usgs.gov","orcid":"https://orcid.org/0000-0003-1084-5843","contributorId":169488,"corporation":false,"usgs":true,"family":"van Riper","given":"Charles","suffix":"III","email":"charles_van_riper@usgs.gov","affiliations":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"preferred":false,"id":467653,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Powell, Robert B.","contributorId":71428,"corporation":false,"usgs":true,"family":"Powell","given":"Robert","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":467652,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Machlis, Gary","contributorId":65318,"corporation":false,"usgs":true,"family":"Machlis","given":"Gary","email":"","affiliations":[],"preferred":false,"id":467651,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"van Wagtendonk, Jan W. 0000-0002-0788-2654","orcid":"https://orcid.org/0000-0002-0788-2654","contributorId":98269,"corporation":false,"usgs":true,"family":"van Wagtendonk","given":"Jan W.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":false,"id":467655,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"van Riper, Carena J.","contributorId":42827,"corporation":false,"usgs":false,"family":"van Riper","given":"Carena","email":"","middleInitial":"J.","affiliations":[{"id":6747,"text":"Texas A&M University","active":true,"usgs":false}],"preferred":false,"id":467650,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"von Ruschkowski, Eick","contributorId":25025,"corporation":false,"usgs":true,"family":"von Ruschkowski","given":"Eick","email":"","affiliations":[],"preferred":false,"id":467649,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Schwarzbach, Steven E. steven_schwarzbach@usgs.gov","contributorId":1025,"corporation":false,"usgs":true,"family":"Schwarzbach","given":"Steven","email":"steven_schwarzbach@usgs.gov","middleInitial":"E.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":467648,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Galipeau, Russell E.","contributorId":93314,"corporation":false,"usgs":true,"family":"Galipeau","given":"Russell","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":467654,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70039941,"text":"70039941 - 2012 - Persistence and extirpation in invaded landscapes: patch characteristics and connectivity determine effects of non-native predatory fish on native salamanders","interactions":[],"lastModifiedDate":"2013-03-04T20:15:55","indexId":"70039941","displayToPublicDate":"2012-09-18T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1018,"text":"Biological Invasions","active":true,"publicationSubtype":{"id":10}},"title":"Persistence and extirpation in invaded landscapes: patch characteristics and connectivity determine effects of non-native predatory fish on native salamanders","docAbstract":"Studies have demonstrated negative effects of non-native, predatory fishes on native amphibians, yet it is still unclear why some amphibian populations persist, while others are extirpated, following fish invasion. We examined this question by developing habitat-based occupancy models for the long-toed salamander (Ambystoma macrodactylum) and nonnative fish using survey data from 1,749 water bodies across 470 catchments in the Northern Rocky Mountains, USA. We first modeled the habitat associations of salamanders at 468 fishless water bodies in 154 catchments where non-native fish were historically, and are currently, absent from the entire catchment. Wethen applied this habitat model to the complete data set to predict the probability of salamander occupancy in each water body, removing any effect of fish presence. Finally, we compared field-observed occurrences of salamanders and fish to modeled probability of salamander occupancy. Suitability models indicated that fish and salamanders had similar habitat preferences, possibly resulting in extirpations of salamander populations from entire catchments where suitable habitats were limiting. Salamanders coexisted with non-native fish in some catchments by using marginal quality, isolated (no inlet or outlet) habitats that remained fishless. They rarely coexisted with fish within individual water bodies and only where habitat quality was highest. Connectivity of water bodies via streams resulted in increased probability of fish invasion and consequently reduced probability of salamander occupancy.These results could be used to identify and prioritize catchments and water bodies where control measures would be most effective at restoring amphibian populations. Our approach could be useful as a framework for improved investigations into questions of persistence and extirpation of native species when non-native species have already become established.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biological Invasions","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Springer","publisherLocation":"Amsterdam, Netherlands","doi":"10.1007/s10530-012-0317-7","usgsCitation":"Pilliod, D., Arkle, R., and Maxell, B.A., 2012, Persistence and extirpation in invaded landscapes: patch characteristics and connectivity determine effects of non-native predatory fish on native salamanders: Biological Invasions, v. 15, no. 3, p. 671-685, https://doi.org/10.1007/s10530-012-0317-7.","productDescription":"15 p.","startPage":"671","endPage":"685","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":261936,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":261931,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10530-012-0317-7","linkFileType":{"id":5,"text":"html"}}],"country":"United States","otherGeospatial":"Rocky Mountains","volume":"15","issue":"3","noUsgsAuthors":false,"publicationDate":"2012-09-02","publicationStatus":"PW","scienceBaseUri":"505a76dee4b0c8380cd7835f","contributors":{"authors":[{"text":"Pilliod, David S.","contributorId":101760,"corporation":false,"usgs":true,"family":"Pilliod","given":"David S.","affiliations":[],"preferred":false,"id":467240,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Arkle, Robert S.","contributorId":55679,"corporation":false,"usgs":true,"family":"Arkle","given":"Robert S.","affiliations":[],"preferred":false,"id":467238,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Maxell, Bryce A.","contributorId":100113,"corporation":false,"usgs":true,"family":"Maxell","given":"Bryce","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":467239,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70040983,"text":"70040983 - 2012 - Using mark-recapture models to estimate survival from telemetry data: Chapter 9.2","interactions":[{"subject":{"id":70040983,"text":"70040983 - 2012 - Using mark-recapture models to estimate survival from telemetry data: Chapter 9.2","indexId":"70040983","publicationYear":"2012","noYear":false,"title":"Using mark-recapture models to estimate survival from telemetry data: Chapter 9.2"},"predicate":"IS_PART_OF","object":{"id":70198150,"text":"70198150 - 2012 - Telemetry techniques: A user guide for fisheries research","indexId":"70198150","publicationYear":"2012","noYear":false,"title":"Telemetry techniques: A user guide for fisheries research"},"id":1}],"isPartOf":{"id":70198150,"text":"70198150 - 2012 - Telemetry techniques: A user guide for fisheries research","indexId":"70198150","publicationYear":"2012","noYear":false,"title":"Telemetry techniques: A user guide for fisheries research"},"lastModifiedDate":"2022-12-21T15:24:29.732869","indexId":"70040983","displayToPublicDate":"2012-09-01T09:15:00","publicationYear":"2012","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Using mark-recapture models to estimate survival from telemetry data: Chapter 9.2","docAbstract":"<p>Analyzing telemetry data within a mark–recapture framework is a powerful approach for estimating demographic parameters (e.g., survival and movement probabilities) that might otherwise be difficult to measure. Yet many studies using telemetry techniques focus on fish behavior and fail to recognize the potential of telemetry data to provide information about fish survival. The sophistication of both mark–recapture modeling and telemetry has dramatically improved since the 1980s, largely due to technological advancements in computing power (for mark–recapture models) and electronic components (for telemetry). Such advances now allow mark–recapture models to take advantage of the detailed information that telemetry techniques can provide.</p><p>The key feature of mark–recapture models is simultaneous estimation of detection and survival probabilities. With telemetry, a “capture” event consists of detecting a given tag code one or more times at a specific location or time. By contrast, in some studies interest may focus on the probability of detecting a single tag transmission (see Sections 7.2 and 9.1). Compared to conventional mark and recapture methods, telemetry methods often have greater detection probabilities due to large detection ranges, increased “effort” (i.e., continuous monitoring with autonomous receivers), and ability to simultaneously monitor multiple locations. Nonetheless, perfect detectability is rare in telemetry studies because both random (e.g., from electronic noise) and nonrandom processes (e.g., receiver loses power temporarily) can allow a fish to pass a receiver undetected. Failure to account for imperfect detection can lead to serious bias in survival estimates. When using telemetry to estimate survival, it is therefore critical to explicitly estimate detection probabilities to ensure unbiased estimates of survival (see Section 7.2). Fortunately, using telemetry techniques and mark–recapture models together yields the best of both worlds: Well-designed telemetry systems deliver high detection probabilities that result in precise estimates from small sample sizes. Mark–recapture models ensure estimates of the demographic parameters are unbiased with respect to the detection process.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Telemetry techniques: A user guide for fisheries research","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"American Fisheries Society","publisherLocation":"Bethesda, MD","doi":"10.47886/9781934874264.ch19","usgsCitation":"Perry, R.W., Castro-Santos, T.R., Holbrook, C., and Sandford, B., 2012, Using mark-recapture models to estimate survival from telemetry data: Chapter 9.2, chap. <i>of</i> Telemetry techniques: A user guide for fisheries research, p. 453-475, https://doi.org/10.47886/9781934874264.ch19.","productDescription":"23 p.","startPage":"453","endPage":"475","numberOfPages":"518","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-037563","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true},{"id":365,"text":"Leetown Science Center","active":true,"usgs":true},{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":319642,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56fd062fe4b0a6037df2d077","contributors":{"editors":[{"text":"Adams, Noah","contributorId":91604,"corporation":false,"usgs":true,"family":"Adams","given":"Noah","affiliations":[],"preferred":false,"id":625682,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Beeman, John W. jbeeman@usgs.gov","contributorId":2646,"corporation":false,"usgs":true,"family":"Beeman","given":"John","email":"jbeeman@usgs.gov","middleInitial":"W.","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":true,"id":625683,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Eiler, John H.","contributorId":146952,"corporation":false,"usgs":false,"family":"Eiler","given":"John","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":625684,"contributorType":{"id":2,"text":"Editors"},"rank":3}],"authors":[{"text":"Perry, Russell W. 0000-0003-4110-8619 rperry@usgs.gov","orcid":"https://orcid.org/0000-0003-4110-8619","contributorId":2820,"corporation":false,"usgs":true,"family":"Perry","given":"Russell","email":"rperry@usgs.gov","middleInitial":"W.","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":true,"id":625658,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Castro-Santos, Theodore R. 0000-0003-2575-9120 tcastrosantos@usgs.gov","orcid":"https://orcid.org/0000-0003-2575-9120","contributorId":3321,"corporation":false,"usgs":true,"family":"Castro-Santos","given":"Theodore","email":"tcastrosantos@usgs.gov","middleInitial":"R.","affiliations":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"preferred":true,"id":625659,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Holbrook, Christopher M. 0000-0001-8203-6856 cholbrook@usgs.gov","orcid":"https://orcid.org/0000-0001-8203-6856","contributorId":4198,"corporation":false,"usgs":true,"family":"Holbrook","given":"Christopher M.","email":"cholbrook@usgs.gov","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":false,"id":625660,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sandford, Benjamin P.","contributorId":118178,"corporation":false,"usgs":true,"family":"Sandford","given":"Benjamin P.","affiliations":[],"preferred":false,"id":515037,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70040354,"text":"70040354 - 2012 - Status and limiting factors of two rare plant species in dry montane communities of Hawai`i Volcanoes National Park.","interactions":[],"lastModifiedDate":"2018-01-05T12:43:14","indexId":"70040354","displayToPublicDate":"2012-08-29T18:30:00","publicationYear":"2012","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"seriesTitle":{"id":414,"text":"Technical Report","active":false,"publicationSubtype":{"id":9}},"seriesNumber":"HCSU-030","title":"Status and limiting factors of two rare plant species in dry montane communities of Hawai`i Volcanoes National Park.","docAbstract":"<p>Two rare plants native to montane dry forests and woodland communities of Hawai`i Volcanoes National Park (HAVO) were studied for more than two years to determine their stand structure, short-term mortality rates, patterns of reproductive phenology, success of fruit production, floral visitor composition, seed germination rates in the greenhouse, and survival of both natural and planted seedlings. <i>Phyllostegia stachyoides</i>, a shrubby Hawaiian mint (Lamiaceae) that is a species of concern, was studied within two small kīpuka at a natural population on the park&rsquo;s Mauna Loa Strip, and three plantings at sites along the Mauna Loa Road were also monitored.<i> Silene hawaiiensis</i>, a threatened shrub species in the pink family (Caryophyllaceae), was monitored at two natural populations, one on Mauna Loa at the Three Trees Kīpuka and the second on Kīlauea Crater Rim south of Halema`uma`u. Silene hawaiiensis plantings were also made inside and outside ungulate exclosures at the park&rsquo;s Kahuku Unit</p>\n<p><i>Phyllostegia stachyoides</i> appeared to have a relatively stable natural population in HAVO with approximately 19% adult plant mortality over three years and recruitment of natural seedlings. Despite high mortality (~98%), some seedlings persisted for more than a year, and recruitment of new plants into the population exceeded the losses of adult plants. Flowering and fruiting phenology was annual and seasonal with peak appearance of buds and flowers in spring and greatest abundance of mature fruit in the summer and fall. Successful production of green fruit from buds and flowers was very high (45%), and green fruit transitioned to mature fruit at a rate of 17.8%. Five insect species were observed visiting flowers, and those with the greatest visitation rates were the alien hover fly <i>Allograpta obliqua</i> (Syrphidae) and the endemic yellowfaced bee <i>Hylaeus difficilis</i> (Colletidae). Both insect species were shown to be carrying pollen of <i>P. stachyoides</i>. Seed germination rates in the greenhouse were variable but ranged as high as 80.4%. Mortality of seedlings planted at three sites along the Mauna Loa Road was very high (~90%) within 2&ndash;3 years of planting. There was no significant difference in the mortality or growth of seedlings planted in areas with little grass compared to those in adjacent areas with high grass cover.</p>\n<p><i>Silene hawaiiensis</i> had a stable population structure at the Mauna Loa study area, but its population structure at the Kīlauea study site was flat to declining. Mortality of adult plants was low on Mauna Loa (6.5%), but was greater than 30% at the Kīlauea Crater Rim site. Among regularly monitored plants at the Kīlauea site, losses were observed in all size classes between 2006 and 2008. Natural seedling recruitment was observed in stand structure plots at both sites between 2006 and 2007, but numbers of seedlings were low and did not compensate for losses of adult plants. Reproductive phenology was annual with buds and flowers observed in summer and fall, and fruit formed in the fall and winter. The production of immature fruit capsules from buds and flowers was high (51.2%) and tagged immature fruit became mature fruit at a high rate of 66.7%. Floral visitation rates were very low in timed observations and only three insect species were identified visiting<i> S. hawaiiensis</i> flowers: native yellow-faced bees <i>Hylaeus difficilis</i> and<i> H. volcanicus</i>, and the alien hover fly <i>Allograpta exotica</i>. A seed dispersal experiment at the Kīlauea Crater Rim site demonstrated that wind dispersed seeds could travel at least 40 m from<i> S. hawaiiensis</i> plants with mature open capsules. Seed germination rates varied from 7.0 to 73.0% in greenhouse trials. Mortality of planted seedlings at Kahuku was not significantly greater outside ungulate exclosures than inside, but growth in height and production of reproductive structures was significantly greater in protected areas inside exclosures. In the current study, the seedling stage was the most vulnerable part of the life cycle for both<i> P</i>.<i>&nbsp;stachyoides</i> and<i> S. hawaiiensis</i>, and low seedling recruitment appeared to be the most important limiting factor for these species</p>","publisher":"University of Hawaii at Hilo","publisherLocation":"Hilo, HI","usgsCitation":"Pratt, L.W., VanDeMark, J.R., and Euaparadorn, M., 2012, Status and limiting factors of two rare plant species in dry montane communities of Hawai`i Volcanoes National Park.: Technical Report HCSU-030, vi, 61 p.","productDescription":"vi, 61 p.","numberOfPages":"66","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-035543","costCenters":[{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true}],"links":[{"id":326194,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Hawaii","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"57a9ad71e4b05e859bdfbafc","contributors":{"authors":[{"text":"Pratt, Linda W. lpratt@usgs.gov","contributorId":3708,"corporation":false,"usgs":true,"family":"Pratt","given":"Linda","email":"lpratt@usgs.gov","middleInitial":"W.","affiliations":[],"preferred":true,"id":644950,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"VanDeMark, Joshua R.","contributorId":120307,"corporation":false,"usgs":true,"family":"VanDeMark","given":"Joshua","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":514586,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Euaparadorn, Melody","contributorId":119927,"corporation":false,"usgs":true,"family":"Euaparadorn","given":"Melody","email":"","affiliations":[],"preferred":false,"id":514585,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70040328,"text":"ds709A - 2012 - Local-area-enhanced, 2.5-meter resolution natural-color and color-infrared satellite-image mosaics of the Khanneshin mineral district in Afghanistan: Chapter A in <i>Local-area-enhanced, high-resolution natural-color and color-infrared satellite-image mosaics of mineral districts in Afghanistan</i>","interactions":[],"lastModifiedDate":"2013-02-01T11:13:25","indexId":"ds709A","displayToPublicDate":"2012-08-17T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":310,"text":"Data Series","code":"DS","onlineIssn":"2327-638X","printIssn":"2327-0271","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"709","chapter":"A","title":"Local-area-enhanced, 2.5-meter resolution natural-color and color-infrared satellite-image mosaics of the Khanneshin mineral district in Afghanistan: Chapter A in <i>Local-area-enhanced, high-resolution natural-color and color-infrared satellite-image mosaics of mineral districts in Afghanistan</i>","docAbstract":"The U.S. Geological Survey (USGS), in cooperation with the U.S. Department of Defense Task Force for Business and Stability Operations, prepared databases for mineral-resource target areas in Afghanistan. The purpose of the databases is to (1) provide useful data to ground-survey crews for use in performing detailed assessments of the areas and (2) provide useful information to private investors who are considering investment in a particular area for development of its natural resources. The set of satellite-image mosaics provided in this Data Series (DS) is one such database. Although airborne digital color-infrared imagery was acquired for parts of Afghanistan in 2006, the image data have radiometric variations that preclude their use in creating a consistent image mosaic for geologic analysis. Consequently, image mosaics were created using ALOS (Advanced Land Observation Satellite; renamed Daichi) satellite images, whose radiometry has been well determined (Saunier, 2007a,b). This part of the DS consists of the locally enhanced ALOS image mosaics for the Khanneshin mineral district, which has uranium, thorium, rare-earth-element, and apatite deposits. ALOS was launched on January 24, 2006, and provides multispectral images from the AVNIR (Advanced Visible and Near-Infrared Radiometer) sensor in blue (420-500 nanometer, nm), green (520-600 nm), red (610-690 nm), and near-infrared (760-890 nm) wavelength bands with an 8-bit dynamic range and a 10-meter (m) ground resolution. The satellite also provides a panchromatic band image from the PRISM (Panchromatic Remote-sensing Instrument for Stereo Mapping) sensor (520-770 nm) with the same dynamic range but a 2.5-m ground resolution. The image products in this DS incorporate copyrighted data provided by the Japan Aerospace Exploration Agency (&copy;JAXA,2007,2008,2010), but the image processing has altered the original pixel structure and all image values of the JAXA ALOS data, such that original image values cannot be recreated from this DS. As such, the DS products match JAXA criteria for value added products, which are not copyrighted, according to the ALOS end-user license agreement. The selection criteria for the satellite imagery used in our mosaics were images having (1) the highest solar-elevation angles (near summer solstice) and (2) the least cloud, cloud-shadow, and snow cover. The multispectral and panchromatic data were orthorectified with ALOS satellite ephemeris data, a process which is not as accurate as orthorectification using digital elevation models (DEMs); however, the ALOS processing center did not have a precise DEM. As a result, the multispectral and panchromatic image pairs were generally not well registered to the surface and not coregistered well enough to perform resolution enhancement on the multispectral data. Therefore, it was necessary to (1) register the 10-m AVNIR multispectral imagery to a well-controlled Landsat image base, (2) mosaic the individual multispectral images into a single image of the entire area of interest, (3) register each panchromatic image to the registered multispectral image base, and (4) mosaic the individual panchromatic images into a single image of the entire area of interest. The two image-registration steps were facilitated using an automated control-point algorithm developed by the USGS that allows image coregistration to within one picture element. Before rectification, the multispectral and panchromatic images were converted to radiance values and then to relative-reflectance values using the methods described in Davis (2006). Mosaicking the multispectral or panchromatic images started with the image with the highest sun-elevation angle and the least atmospheric scattering, which was treated as the standard image. The band-reflectance values of all other multispectral or panchromatic images within the area were sequentially adjusted to that of the standard image by determining band-reflectance correspondence between overlapping images using linear least-squares analysis. The resolution of the multispectral image mosaic was then increased to that of the panchromatic image mosaic using the SPARKLE logic, which is described in Davis (2006). Each of the four-band images within the resolution-enhanced image mosaic was individually subjected to a local-area histogram stretch algorithm (described in Davis, 2007), which stretches each band's picture element based on the digital values of all picture elements within a 500-m radius. The final databases, which are provided in this DS, are three-band, color-composite images of the local-area-enhanced, natural-color data (the blue, green, and red wavelength bands) and color-infrared data (the green, red, and near-infrared wavelength bands). All image data were initially projected and maintained in Universal Transverse Mercator (UTM) map projection using the target area's local zone (41 for Khanneshin) and the WGS84 datum. The final image mosaics were subdivided into nine overlapping tiles or quadrants because of the large size of the target area. The nine image tiles (or quadrants) for the Khanneshin area are provided as embedded geotiff images, which can be read and used by most geographic information system (GIS) and image-processing software. The tiff world files (tfw) are provided, even though they are generally not needed for most software to read an embedded geotiff image. Within the Khanneshin study area, one subarea was designated for detailed field investigations (that is, the Khanneshin volcano subarea); this subarea was extracted from the area's image mosaic and is provided as separate embedded geotiff images.","largerWorkTitle":"Local-area-enhanced, high-resolution natural-color and color-infrared satellite-image mosaics of mineral districts in Afghanistan (DS 709)","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ds709A","collaboration":"Prepared in cooperation with the U.S. Department of Defense <a href=\"http://tfbso.defense.gov/www/\" target=\"_blank\">Task Force for Business and Stability Operations</a> and the <a href=\"http://www.bgs.ac.uk/AfghanMinerals/\" target=\"_blank\">Afghanistan Geological Survey</a>. This report is Chapter A in <i>Local-area-enhanced, high-resolution natural-color and color-infrared satellite-image mosaics of mineral districts in Afghanistan</i>. For more information, see: <a href=\"http://pubs.er.usgs.gov/publication/ds709\" target=\"_blank\">DS 709</a>.","usgsCitation":"Davis, P.A., Cagney, L.E., Arko, S.A., and Harbin, M., 2012, Local-area-enhanced, 2.5-meter resolution natural-color and color-infrared satellite-image mosaics of the Khanneshin mineral district in Afghanistan: Chapter A in <i>Local-area-enhanced, high-resolution natural-color and color-infrared satellite-image mosaics of mineral districts in Afghanistan</i>: U.S. Geological Survey Data Series 709, Readme; 2 Index Maps: 11 x 8.5 inches and 76.14 x 50.07 inches; 20 Image Files; 20 Metadata Files; Shapefiles; DS 709, https://doi.org/10.3133/ds709A.","productDescription":"Readme; 2 Index Maps: 11 x 8.5 inches and 76.14 x 50.07 inches; 20 Image Files; 20 Metadata Files; Shapefiles; DS 709","onlineOnly":"Y","additionalOnlineFiles":"Y","costCenters":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"links":[{"id":262599,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ds_709_A.jpg"},{"id":262598,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/ds/709/a/index_maps/Khanneshin_Image_Index_Map.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":262596,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/ds/709/a/","linkFileType":{"id":5,"text":"html"}},{"id":262597,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/ds/709/a/index_maps/Khanneshin_Area-of-Interest_Index_Map.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":263615,"type":{"id":20,"text":"Read Me"},"url":"https://pubs.usgs.gov/ds/709/a/1_readme.txt"},{"id":263616,"type":{"id":14,"text":"Image"},"url":"https://pubs.usgs.gov/ds/709/a/image_files/image_files.html"},{"id":263617,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/ds/709/a/metadata/metadata.html"},{"id":263618,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/ds/709/"},{"id":263619,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/ds/709/a/shapefiles/shapefiles.html"}],"country":"Afghanistan","state":"Helm;Nimroz","otherGeospatial":"Khanneshin Mineral District","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 62.75,29.916667 ], [ 62.75,30.833333 ], [ 64.416667,30.833333 ], [ 64.416667,29.916667 ], [ 62.75,29.916667 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"507ee039e4b022001d87bb7e","contributors":{"authors":[{"text":"Davis, Philip A. pdavis@usgs.gov","contributorId":692,"corporation":false,"usgs":true,"family":"Davis","given":"Philip","email":"pdavis@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":468097,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cagney, Laura E. 0000-0003-3282-2458 lcagney@usgs.gov","orcid":"https://orcid.org/0000-0003-3282-2458","contributorId":4744,"corporation":false,"usgs":true,"family":"Cagney","given":"Laura","email":"lcagney@usgs.gov","middleInitial":"E.","affiliations":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"preferred":true,"id":468098,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Arko, Scott A.","contributorId":101929,"corporation":false,"usgs":true,"family":"Arko","given":"Scott","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":468100,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Harbin, Michelle L.","contributorId":20590,"corporation":false,"usgs":true,"family":"Harbin","given":"Michelle L.","affiliations":[],"preferred":false,"id":468099,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70039606,"text":"ds659 - 2012 - Groundwater-quality data in the Borrego Valley, Central Desert, and Low-Use Basins of the Mojave and Sonoran Deserts study unit, 2008-2010--Results from the California GAMA Program","interactions":[],"lastModifiedDate":"2012-08-16T01:02:05","indexId":"ds659","displayToPublicDate":"2012-08-15T00:00:00","publicationYear":"2012","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":310,"text":"Data Series","code":"DS","onlineIssn":"2327-638X","printIssn":"2327-0271","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"659","title":"Groundwater-quality data in the Borrego Valley, Central Desert, and Low-Use Basins of the Mojave and Sonoran Deserts study unit, 2008-2010--Results from the California GAMA Program","docAbstract":"Groundwater quality in the 12,103-square-mile Borrego Valley, Central Desert, and Low-Use Basins of the Mojave and Sonoran Deserts (CLUB) study unit was investigated by the U.S. Geological Survey (USGS) from December 2008 to March 2010, as part of the California State Water Resources Control Board (SWRCB) Groundwater Ambient Monitoring and Assessment (GAMA) Program's Priority Basin Project (PBP). The GAMA-PBP was developed in response to the California Groundwater Quality Monitoring Act of 2001 and is being conducted in collaboration with the SWRCB and Lawrence Livermore National Laboratory (LLNL). The CLUB study unit was the twenty-eighth study unit to be sampled as part of the GAMA-PBP. The GAMA CLUB study was designed to provide a spatially unbiased assessment of untreated-groundwater quality in the primary aquifer systems, and to facilitate statistically consistent comparisons of untreated-groundwater quality throughout California. The primary aquifer systems (hereinafter referred to as primary aquifers) are defined as parts of aquifers corresponding to the perforation intervals of wells listed in the California Department of Public Health (CDPH) database for the CLUB study unit. The quality of groundwater in shallow or deep water-bearing zones may differ from the quality of groundwater in the primary aquifers; shallow groundwater may be more vulnerable to surficial contamination. In the CLUB study unit, groundwater samples were collected from 52 wells in 3 study areas (Borrego Valley, Central Desert, and Low-Use Basins of the Mojave and Sonoran Deserts) in San Bernardino, Riverside, Kern, San Diego, and Imperial Counties. Forty-nine of the wells were selected by using a spatially distributed, randomized grid-based method to provide statistical representation of the study unit (grid wells), and three wells were selected to aid in evaluation of water-quality issues (understanding wells). The groundwater samples were analyzed for organic constituents (volatile organic compounds [VOCs], pesticides and pesticide degradates, and pharmaceutical compounds), constituents of special interest (perchlorate and <i>N</i>-nitrosodimethylamine [NDMA]), naturally-occurring inorganic constituents (trace elements, nutrients, major and minor ions, silica, total dissolved solids [TDS], alkalinity, and species of inorganic chromium), and radioactive constituents (radon-222, radium isotopes, and gross alpha and gross beta radioactivity). Naturally-occurring isotopes (stable isotopes of hydrogen, oxygen, boron, and strontium in water, stable isotopes of carbon in dissolved inorganic carbon, activities of tritium, and carbon-14 abundance) and dissolved noble gases also were measured to help identify the sources and ages of sampled groundwater. In total, 223 constituents and 12 water-quality indicators were investigated. Three types of quality-control samples (blanks, replicates, and matrix spikes) were collected at up to 10 percent of the wells in the CLUB study unit, and the results for these samples were used to evaluate the quality of the data for the groundwater samples. Field blanks rarely contained detectable concentrations of any constituent, suggesting that contamination from sample collection procedures was not a significant source of bias in the data for the groundwater samples. Replicate samples generally were within the limits of acceptable analytical reproducibility. Median matrix-spike recoveries were within the acceptable range (70 to 130 percent) for approximately 85 percent of the compounds. This study did not attempt to evaluate the quality of water delivered to consumers; after withdrawal from the ground, untreated groundwater typically is treated, disinfected, and (or) blended with other waters to maintain water quality. Regulatory benchmarks apply to water that is delivered to the consumer, not to untreated groundwater. However, to provide some context for the results, concentrations of constituents measured in the untreated groundwater were compared with regulatory and non-regulatory health-based benchmarks established by the U.S. Environmental Protection Agency (USEPA) and CDPH, and to non-regulatory benchmarks established for aesthetic concerns by CDPH. Comparisons between data collected for this study and benchmarks for drinking water are for illustrative purposes only and are not indicative of compliance or non-compliance with those benchmarks. Most inorganic constituents detected in groundwater samples from the 49 grid wells were detected at concentrations less than drinking-water benchmarks. In addition, all detections of organic constituents from the CLUB study-unit grid-well samples were less than health-based benchmarks. In total, VOCs were detected in 17 of the 49 grid wells sampled (approximately 35 percent), pesticides and pesticide degradates were detected in 5 of the 47 grid wells sampled (approximately 11 percent), and perchlorate was detected in 41 of 49 grid wells sampled (approximately 84 percent). Trace elements, major and minor ions, and nutrients were sampled for at 39 grid wells, and radioactive constituents were sampled for at 23 grid wells; most detected concentrations were less than health-based benchmarks. Exceptions in the grid-well samples include seven detections of arsenic greater than the USEPA maximum contaminant level (MCL-US) of 10 micrograms per liter (&mu;g/L); four detections of boron greater than the CDPH notification level (NL-CA) of 1,000 &mu;g/L; six detections of molybdenum greater than the USEPA lifetime health advisory level (HAL-US) of 40 &mu;g/L; two detections of uranium greater than the MCL-US of 30 &mu;g/L; nine detections of fluoride greater than the CDPH maximum contaminant level (MCL-CA) of 2 milligrams per liter (mg/L); one detection of nitrite plus nitrate (NO<sub>2-</sub>+NO<sub>3-</sub>), as nitrogen, greater than the MCL-US of 10 mg/L; and four detections of gross alpha radioactivity (72-hour count), and one detection of gross alpha radioactivity (30-day count), greater than the MCL-US of 15 picocuries per liter. Results for constituents with non-regulatory benchmarks set for aesthetic concerns showed that a manganese concentration greater than the CDPH secondary maximum contaminant level (SMCL-CA) of 50 &mu;g/L was detected in one grid well. Chloride concentrations greater than the recommended SMCL-CA benchmark of 250 mg/L were detected in three grid wells, and one of these wells also had a concentration that was greater than the upper SMCL-CA benchmark of 500 mg/L. Sulfate concentrations greater than the recommended SMCL-CA benchmark of 250 mg/L were measured in six grid wells. TDS concentrations greater than the SMCL-CA recommended benchmark of 500 mg/L were measured in 20 grid wells, and concentrations in 2 of these wells also were greater than the SMCL-CA upper benchmark of 1,000 mg/L.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ds659","collaboration":"Prepared in cooperation with the California State Water Resources Control Board A Product of the California Groundwater Ambient Monitoring and Assessment (GAMA) Program","usgsCitation":"Mathany, T., Wright, M.T., Beuttel, B.S., and Belitz, K., 2012, Groundwater-quality data in the Borrego Valley, Central Desert, and Low-Use Basins of the Mojave and Sonoran Deserts study unit, 2008-2010--Results from the California GAMA Program: U.S. Geological Survey Data Series 659, x, 100 p.; maps (col.); Tables; Appendix, https://doi.org/10.3133/ds659.","productDescription":"x, 100 p.; maps (col.); Tables; Appendix","startPage":"i","endPage":"100","numberOfPages":"114","additionalOnlineFiles":"N","temporalStart":"2008-01-01","temporalEnd":"2010-12-31","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":259614,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ds_659.jpg"},{"id":259609,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/ds/659/","linkFileType":{"id":5,"text":"html"}},{"id":259610,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/ds/659/pdf/ds659.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"California","otherGeospatial":"Borrego Valley;Mojave Desert;Sonoran Desert","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2dcfe4b0c8380cd5c040","contributors":{"authors":[{"text":"Mathany, Timothy M. 0000-0002-4747-5113","orcid":"https://orcid.org/0000-0002-4747-5113","contributorId":99949,"corporation":false,"usgs":true,"family":"Mathany","given":"Timothy M.","affiliations":[],"preferred":false,"id":466560,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wright, Michael T. 0000-0003-0653-6466 mtwright@usgs.gov","orcid":"https://orcid.org/0000-0003-0653-6466","contributorId":1508,"corporation":false,"usgs":true,"family":"Wright","given":"Michael","email":"mtwright@usgs.gov","middleInitial":"T.","affiliations":[],"preferred":false,"id":466558,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Beuttel, Brandon S. bbeuttel@usgs.gov","contributorId":5069,"corporation":false,"usgs":true,"family":"Beuttel","given":"Brandon","email":"bbeuttel@usgs.gov","middleInitial":"S.","affiliations":[],"preferred":true,"id":466559,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Belitz, Kenneth 0000-0003-4481-2345 kbelitz@usgs.gov","orcid":"https://orcid.org/0000-0003-4481-2345","contributorId":442,"corporation":false,"usgs":true,"family":"Belitz","given":"Kenneth","email":"kbelitz@usgs.gov","affiliations":[{"id":376,"text":"Massachusetts Water Science Center","active":true,"usgs":true},{"id":503,"text":"Office of Water Quality","active":true,"usgs":true},{"id":27111,"text":"National Water Quality Program","active":true,"usgs":true},{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true},{"id":466,"text":"New England Water Science Center","active":true,"usgs":true}],"preferred":true,"id":466557,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
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