{"pageNumber":"191","pageRowStart":"4750","pageSize":"25","recordCount":10466,"records":[{"id":70034753,"text":"70034753 - 2011 - Evaluating impacts of subdivision density on shallow groundwater in Southeastern Wisconsin, USA","interactions":[],"lastModifiedDate":"2021-03-15T20:23:07.895811","indexId":"70034753","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2261,"text":"Journal of Environmental Planning and Management","active":true,"publicationSubtype":{"id":10}},"title":"Evaluating impacts of subdivision density on shallow groundwater in Southeastern Wisconsin, USA","docAbstract":"<p><span>Using simple numerical groundwater flow models, we tested the impacts of suburban developments on groundwater levels and discharge to streams. We used lot sizes of 1, 3 and 5 acres (4000, 12,000 and 20,000&nbsp;m</span><sup>2</sup><span>) with one domestic well per lot that pumped water from shallow aquifers. Our modelling showed that pumping had little impact on water levels and groundwater discharge to streams if the developed area is of a moderate size. However, domestic wells had the potential to impact local groundwater levels and baseflows in large developments. In township-wide development scenarios of 1-acre (4000&nbsp;m</span><sup>2</sup><span>) lots, simulated drawdowns beneath developed areas ranged from 1 to 18 ft (0.3 to 5.5 m), and baseflow reductions ranged from 20 to 40%. Impacts generally were inversely proportional to lot size, recharge rate and hydraulic conductivity of the aquifer materials. Developments using individual domestic wells have the potential to impact local groundwater levels and surface water features. The impacts can range from negligible to severe, depending on local hydrogeologic conditions and on whether wastewater is recharged onsite or is removed from the basin. An assessment of groundwater impacts should be a part of the planning process for all suburban developments.</span></p>","language":"English","publisher":"Taylor & Francis Online","doi":"10.1080/09640568.2010.524358","issn":"09640568","usgsCitation":"Rayne, T., and Bradbury, K.R., 2011, Evaluating impacts of subdivision density on shallow groundwater in Southeastern Wisconsin, USA: Journal of Environmental Planning and Management, v. 54, no. 5, p. 559-575, https://doi.org/10.1080/09640568.2010.524358.","productDescription":"17 p.","startPage":"559","endPage":"575","costCenters":[],"links":[{"id":243386,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215573,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/09640568.2010.524358"}],"country":"United States","state":"Wisconsin","otherGeospatial":"Southeastern Wisconsin","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -87.8082275390625,\n              42.49640294093705\n            ],\n            [\n              -87.81372070312499,\n              42.61779143282346\n            ],\n            [\n              -87.7532958984375,\n              42.69858589169842\n            ],\n            [\n              -87.7532958984375,\n              42.783307077249624\n            ],\n            [\n              -87.8302001953125,\n              42.91218338638015\n            ],\n            [\n              -87.8466796875,\n              42.99259451971113\n            ],\n            [\n              -87.857666015625,\n              43.04480541304369\n            ],\n            [\n              -87.879638671875,\n              43.201171681272456\n            ],\n            [\n              -87.86865234374999,\n              43.34914966389313\n            ],\n            [\n              -87.7587890625,\n              43.628123412124616\n            ],\n            [\n              -88.6541748046875,\n              43.636075155965784\n            ],\n            [\n              -88.6541748046875,\n              43.337164854911094\n            ],\n            [\n              -88.65966796875,\n              42.49640294093705\n            ],\n            [\n              -87.8082275390625,\n              42.49640294093705\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"54","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0be7e4b0c8380cd52928","contributors":{"authors":[{"text":"Rayne, T.W.","contributorId":86582,"corporation":false,"usgs":true,"family":"Rayne","given":"T.W.","email":"","affiliations":[],"preferred":false,"id":447424,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bradbury, K. R.","contributorId":86070,"corporation":false,"usgs":true,"family":"Bradbury","given":"K.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":447423,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70034680,"text":"70034680 - 2011 - Occupancy and abundance of wintering birds in a dynamic agricultural landscape","interactions":[],"lastModifiedDate":"2021-04-13T20:08:40.437726","indexId":"70034680","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Occupancy and abundance of wintering birds in a dynamic agricultural landscape","docAbstract":"<p><span>Effective monitoring programs are designed to track changes in the distribution, occurrence, and abundance of species. We developed an extension of Royle and Kéry's (2007) single species model to estimate simultaneously temporal changes in probabilities of detection, occupancy, colonization, extinction, and species turnover using data on calling anuran amphibians, collected from 2002 to 2006 in the Lower Mississippi Alluvial Valley of Louisiana, USA. During our 5‐year study, estimates of occurrence probabilities declined for all 12 species detected. These declines occurred primarily in conjunction with variation in estimates of local extinction probabilities (cajun chorus frog [</span><i>Pseudacris fouquettei</i><span>], spring peeper [</span><i>P. crucifer</i><span>], northern cricket frog [</span><i>Acris crepitans</i><span>], Cope's gray treefrog [</span><i>Hyla chrysoscelis</i><span>], green treefrog [</span><i>H. cinerea</i><span>], squirrel treefrog [</span><i>H. squirella</i><span>], southern leopard frog [</span><i>Lithobates sphenocephalus</i><span>], bronze frog [</span><i>L. clamitans</i><span>], American bullfrog [</span><i>L. catesbeianus</i><span>], and Fowler's toad [</span><i>Anaxyrus fowleri</i><span>]). For 2 species (eastern narrow‐mouthed toad [</span><i>Gastrophryne carolinensis</i><span>] and Gulf Coast toad [</span><i>Incilius nebulifer</i><span>]), declines in occupancy appeared to be a consequence of both increased local extinction and decreased colonization events. The eastern narrow‐mouthed toad experienced a 2.5‐fold increase in estimates of occupancy in 2004, possibly because of the high amount of rainfall received during that year, along with a decrease in extinction and increase in colonization of new sites between 2003 and 2004. Our model can be incorporated into monitoring programs to estimate simultaneously the occupancy dynamics for multiple species that show similar responses to ecological conditions. It will likely be an important asset for those monitoring programs that employ the same methods to sample assemblages of ecologically similar species, including those that are rare. By combining information from multiple species to decrease the variance on estimates of individual species, our results are advantageous compared to single‐species models. This feature enables managers and researchers to use an entire community, rather than just one species, as an ecological indicator in monitoring programs.</span></p>","language":"English","publisher":"The Wildlife Society","doi":"10.1002/jwmg.98","issn":"0022541X","usgsCitation":"Miller, M., Pearlstine, E., Dorazio, R., and Mazzotti, F., 2011, Occupancy and abundance of wintering birds in a dynamic agricultural landscape: Journal of Wildlife Management, v. 75, no. 4, p. 751-761, https://doi.org/10.1002/jwmg.98.","productDescription":"11 p.","startPage":"751","endPage":"761","costCenters":[],"links":[{"id":243760,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215924,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/jwmg.97"}],"volume":"75","issue":"4","noUsgsAuthors":false,"publicationDate":"2011-05-25","publicationStatus":"PW","scienceBaseUri":"505a6b17e4b0c8380cd744f2","contributors":{"authors":[{"text":"Miller, M.W.","contributorId":57012,"corporation":false,"usgs":true,"family":"Miller","given":"M.W.","email":"","affiliations":[],"preferred":false,"id":447017,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pearlstine, E.V.","contributorId":15857,"corporation":false,"usgs":true,"family":"Pearlstine","given":"E.V.","email":"","affiliations":[],"preferred":false,"id":447015,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dorazio, Robert 0000-0003-2663-0468 bob_dorazio@usgs.gov","orcid":"https://orcid.org/0000-0003-2663-0468","contributorId":172151,"corporation":false,"usgs":true,"family":"Dorazio","given":"Robert","email":"bob_dorazio@usgs.gov","affiliations":[{"id":5051,"text":"FLWSC-Orlando","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":447016,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mazzotti, F.J.","contributorId":10136,"corporation":false,"usgs":true,"family":"Mazzotti","given":"F.J.","email":"","affiliations":[],"preferred":false,"id":447014,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034679,"text":"70034679 - 2011 - Semi-quantitative evaluation of fecal contamination potential by human and ruminant sources using multiple lines of evidence","interactions":[],"lastModifiedDate":"2021-04-13T20:23:18.698557","indexId":"70034679","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3716,"text":"Water Research","onlineIssn":"1879-2448","printIssn":"0043-1354","active":true,"publicationSubtype":{"id":10}},"title":"Semi-quantitative evaluation of fecal contamination potential by human and ruminant sources using multiple lines of evidence","docAbstract":"<p><span>Protocols for microbial source tracking of fecal contamination generally are able to identify when a source of contamination is present, but thus far have been unable to evaluate what portion of fecal-indicator bacteria (FIB) came from various sources. A mathematical approach to estimate relative amounts of FIB, such as&nbsp;</span><i>Escherichia coli</i><span>, from various sources based on the concentration and distribution of microbial source tracking markers in feces was developed. The approach was tested using dilute fecal suspensions, then applied as part of an analytical suite to a contaminated headwater stream in the Rocky Mountains (Upper Fountain Creek, Colorado). In one single-source fecal suspension, a source that was not present could not be excluded because of incomplete marker specificity; however, human and ruminant sources were detected whenever they were present. In the mixed-feces suspension (pet and human), the minority contributor (human) was detected at a concentration low enough to preclude human contamination as the dominant source of&nbsp;</span><i>E. coli</i><span>&nbsp;to the sample. Without the semi-quantitative approach described, simple detects of human-associated marker in stream samples would have provided inaccurate evidence that human contamination was a major source of&nbsp;</span><i>E. coli</i><span>&nbsp;to the stream. In samples from Upper Fountain Creek the pattern of&nbsp;</span><i>E. coli</i><span>, general and host-associated microbial source tracking markers, nutrients, and wastewater-associated chemical detections—augmented with local observations and land-use patterns—indicated that, contrary to expectations, birds rather than humans or ruminants were the predominant source of fecal contamination to Upper Fountain Creek. This new approach to&nbsp;</span><i>E. coli</i><span>&nbsp;allocation, validated by a controlled study and tested by application in a relatively simple setting, represents a widely applicable step forward in the field of microbial source tracking of fecal contamination.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.watres.2011.03.037","issn":"00431354","usgsCitation":"Stoeckel, D.M., Stelzer, E.A., Stogner, and Mau, D.P., 2011, Semi-quantitative evaluation of fecal contamination potential by human and ruminant sources using multiple lines of evidence: Water Research, v. 45, no. 10, p. 3225-3244, https://doi.org/10.1016/j.watres.2011.03.037.","productDescription":"20 p.","startPage":"3225","endPage":"3244","costCenters":[],"links":[{"id":243731,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215896,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.watres.2011.03.037"}],"volume":"45","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8d07e4b08c986b318231","contributors":{"authors":[{"text":"Stoeckel, D. M.","contributorId":84855,"corporation":false,"usgs":true,"family":"Stoeckel","given":"D.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":447012,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stelzer, Erin A. 0000-0001-7645-7603 eastelzer@usgs.gov","orcid":"https://orcid.org/0000-0001-7645-7603","contributorId":1933,"corporation":false,"usgs":true,"family":"Stelzer","given":"Erin","email":"eastelzer@usgs.gov","middleInitial":"A.","affiliations":[{"id":35860,"text":"Ohio-Kentucky-Indiana Water Science Center","active":true,"usgs":true},{"id":513,"text":"Ohio Water Science Center","active":true,"usgs":true}],"preferred":true,"id":447011,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stogner 0000-0002-3185-1452 rstogner@usgs.gov","orcid":"https://orcid.org/0000-0002-3185-1452","contributorId":938,"corporation":false,"usgs":true,"family":"Stogner","email":"rstogner@usgs.gov","affiliations":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"preferred":false,"id":447013,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mau, David P. dpmau@usgs.gov","contributorId":457,"corporation":false,"usgs":true,"family":"Mau","given":"David","email":"dpmau@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":447010,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034676,"text":"70034676 - 2011 - Comparative phylogeography of a coevolved community: Concerted population expansions in Joshua trees and four Yucca moths","interactions":[],"lastModifiedDate":"2012-03-12T17:21:40","indexId":"70034676","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2980,"text":"PLoS ONE","active":true,"publicationSubtype":{"id":10}},"title":"Comparative phylogeography of a coevolved community: Concerted population expansions in Joshua trees and four Yucca moths","docAbstract":"Comparative phylogeographic studies have had mixed success in identifying common phylogeographic patterns among co-distributed organisms. Whereas some have found broadly similar patterns across a diverse array of taxa, others have found that the histories of different species are more idiosyncratic than congruent. The variation in the results of comparative phylogeographic studies could indicate that the extent to which sympatrically-distributed organisms share common biogeographic histories varies depending on the strength and specificity of ecological interactions between them. To test this hypothesis, we examined demographic and phylogeographic patterns in a highly specialized, coevolved community - Joshua trees (Yucca brevifolia) and their associated yucca moths. This tightly-integrated, mutually interdependent community is known to have experienced significant range changes at the end of the last glacial period, so there is a strong a priori expectation that these organisms will show common signatures of demographic and distributional changes over time. Using a database of >5000 GPS records for Joshua trees, and multi-locus DNA sequence data from the Joshua tree and four species of yucca moth, we combined paleaodistribution modeling with coalescent-based analyses of demographic and phylgeographic history. We extensively evaluated the power of our methods to infer past population size and distributional changes by evaluating the effect of different inference procedures on our results, comparing our palaeodistribution models to Pleistocene-aged packrat midden records, and simulating DNA sequence data under a variety of alternative demographic histories. Together the results indicate that these organisms have shared a common history of population expansion, and that these expansions were broadly coincident in time. However, contrary to our expectations, none of our analyses indicated significant range or population size reductions at the end of the last glacial period, and the inferred demographic changes substantially predate Holocene climate changes.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"PLoS ONE","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1371/journal.pone.0025628","issn":"19326203","usgsCitation":"Smith, C., Tank, S., Godsoe, W., Levenick, J., Strand, E., Esque, T., and Pellmyr, O., 2011, Comparative phylogeography of a coevolved community: Concerted population expansions in Joshua trees and four Yucca moths: PLoS ONE, v. 6, no. 10, https://doi.org/10.1371/journal.pone.0025628.","costCenters":[],"links":[{"id":475189,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1371/journal.pone.0025628","text":"Publisher Index Page"},{"id":215866,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1371/journal.pone.0025628"},{"id":243698,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","issue":"10","noUsgsAuthors":false,"publicationDate":"2011-10-18","publicationStatus":"PW","scienceBaseUri":"5059f822e4b0c8380cd4ced7","contributors":{"authors":[{"text":"Smith, C.I.","contributorId":41670,"corporation":false,"usgs":true,"family":"Smith","given":"C.I.","email":"","affiliations":[],"preferred":false,"id":446999,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tank, S.","contributorId":84179,"corporation":false,"usgs":true,"family":"Tank","given":"S.","email":"","affiliations":[],"preferred":false,"id":447001,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Godsoe, W.","contributorId":7106,"corporation":false,"usgs":true,"family":"Godsoe","given":"W.","affiliations":[],"preferred":false,"id":446997,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Levenick, J.","contributorId":59265,"corporation":false,"usgs":true,"family":"Levenick","given":"J.","affiliations":[],"preferred":false,"id":447000,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Strand, Espen","contributorId":91280,"corporation":false,"usgs":true,"family":"Strand","given":"Espen","email":"","affiliations":[],"preferred":false,"id":447002,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Esque, T.","contributorId":19893,"corporation":false,"usgs":true,"family":"Esque","given":"T.","affiliations":[],"preferred":false,"id":446998,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Pellmyr, O.","contributorId":98970,"corporation":false,"usgs":true,"family":"Pellmyr","given":"O.","affiliations":[],"preferred":false,"id":447003,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70035088,"text":"70035088 - 2011 - Glacial flour dust storms in the Gulf of Alaska: hydrologic and meteorological controls and their importance as a source of bioavailable iron","interactions":[],"lastModifiedDate":"2018-05-02T21:30:12","indexId":"70035088","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Glacial flour dust storms in the Gulf of Alaska: hydrologic and meteorological controls and their importance as a source of bioavailable iron","docAbstract":"Iron is an essential micronutrient that limits primary productivity in much of the ocean, including the Gulf of Alaska (GoA). However, the processes that transport iron to the ocean surface are poorly quantified. We combine satellite and meteorological data to provide the first description of widespread dust transport from coastal Alaska into the GoA. Dust is frequently transported from glacially-derived sediment at the mouths of several rivers, the most prominent of which is the Copper River. These dust events occur most frequently in autumn, when coastal river levels are low and riverbed sediments are exposed. The dust plumes are transported several hundred kilometers beyond the continental shelf into iron-limited waters. We estimate the mass of dust transported from the Copper River valley during one 2006 dust event to be between 25–80 ktons. Based on conservative estimates, this equates to a soluble iron loading of 30–200 tons. We suggest the soluble Fe flux from dust originating in glaciofluvial sediment deposits from the entire GoA coastline is two to three times larger, and is comparable to the annual Fe flux to GoA surface waters from eddies of coastal origin. Given that glaciers are retreating in the coastal GoA region and in other locations, it is important to examine whether fluxes of dust are increasing from glacierized landscapes to the ocean, and to assess the impact of associated Fe on marine ecosystems.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Research Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"AGU","doi":"10.1029/2010GL046573","issn":"00948276","usgsCitation":"Crusius, J., Schroth, A., Gasso, S., Moy, C., Levy, R., and Gatica, M., 2011, Glacial flour dust storms in the Gulf of Alaska: hydrologic and meteorological controls and their importance as a source of bioavailable iron: Geophysical Research Letters, v. 38, no. 6, L06602, https://doi.org/10.1029/2010GL046573.","productDescription":"L06602","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":487246,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2010gl046573","text":"Publisher Index Page"},{"id":243288,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215480,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2010GL046573"}],"otherGeospatial":"Gulf Of Alaska","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -170.5,47.0 ], [ -170.5,61.7 ], [ -123.6,61.7 ], [ -123.6,47.0 ], [ -170.5,47.0 ] ] ] } } ] }","volume":"38","issue":"6","noUsgsAuthors":false,"publicationDate":"2011-03-18","publicationStatus":"PW","scienceBaseUri":"505a2901e4b0c8380cd5a5dc","contributors":{"authors":[{"text":"Crusius, John 0000-0003-2554-0831 jcrusius@usgs.gov","orcid":"https://orcid.org/0000-0003-2554-0831","contributorId":2155,"corporation":false,"usgs":true,"family":"Crusius","given":"John","email":"jcrusius@usgs.gov","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":449237,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schroth, A.W.","contributorId":79707,"corporation":false,"usgs":true,"family":"Schroth","given":"A.W.","email":"","affiliations":[],"preferred":false,"id":449238,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gasso, S.","contributorId":28447,"corporation":false,"usgs":true,"family":"Gasso","given":"S.","affiliations":[],"preferred":false,"id":449236,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Moy, C.M.","contributorId":81328,"corporation":false,"usgs":true,"family":"Moy","given":"C.M.","email":"","affiliations":[],"preferred":false,"id":449239,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Levy, R.C.","contributorId":11435,"corporation":false,"usgs":true,"family":"Levy","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":449234,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Gatica, M.","contributorId":24191,"corporation":false,"usgs":true,"family":"Gatica","given":"M.","affiliations":[],"preferred":false,"id":449235,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70034673,"text":"70034673 - 2011 - Feasibility of waveform inversion of Rayleigh waves for shallow shear-wave velocity using a genetic algorithm","interactions":[],"lastModifiedDate":"2021-04-14T11:46:48.294146","indexId":"70034673","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2165,"text":"Journal of Applied Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"Feasibility of waveform inversion of Rayleigh waves for shallow shear-wave velocity using a genetic algorithm","docAbstract":"<p><span>Conventional surface wave inversion for shallow shear (S)-wave velocity relies on the generation of dispersion curves of Rayleigh waves. This constrains the method to only laterally homogeneous (or very smooth laterally heterogeneous) earth models. Waveform inversion directly fits waveforms on seismograms, hence, does not have such a limitation. Waveforms of Rayleigh waves are highly related to S-wave velocities. By inverting the waveforms of Rayleigh waves on a near-surface seismogram, shallow S-wave velocities can be estimated for earth models with strong lateral heterogeneity. We employ genetic algorithm (GA) to perform waveform inversion of Rayleigh waves for S-wave velocities. The forward problem is solved by finite-difference modeling in the time domain. The model space is updated by generating offspring models using GA. Final solutions can be found through an iterative waveform-fitting scheme. Inversions based on synthetic records show that the S-wave velocities can be recovered successfully with errors no more than 10% for several typical near-surface earth models. For layered earth models, the proposed method can generate one-dimensional S-wave velocity profiles without the knowledge of initial models. For earth models containing lateral heterogeneity in which case conventional dispersion-curve-based inversion methods are challenging, it is feasible to produce high-resolution S-wave velocity sections by GA waveform inversion with appropriate priori information. The synthetic tests indicate that the GA waveform inversion of Rayleigh waves has the great potential for shallow S-wave velocity imaging with the existence of strong lateral heterogeneity.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.jappgeo.2011.09.028","issn":"09269851","usgsCitation":"Zeng, C., Xia, J., Miller, R., and Tsoflias, G., 2011, Feasibility of waveform inversion of Rayleigh waves for shallow shear-wave velocity using a genetic algorithm: Journal of Applied Geophysics, v. 75, no. 4, p. 648-655, https://doi.org/10.1016/j.jappgeo.2011.09.028.","productDescription":"8 p.","startPage":"648","endPage":"655","numberOfPages":"8","costCenters":[],"links":[{"id":243634,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"75","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0f3fe4b0c8380cd5382f","contributors":{"authors":[{"text":"Zeng, C.","contributorId":94519,"corporation":false,"usgs":true,"family":"Zeng","given":"C.","email":"","affiliations":[],"preferred":false,"id":446975,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Xia, J.","contributorId":63513,"corporation":false,"usgs":true,"family":"Xia","given":"J.","email":"","affiliations":[],"preferred":false,"id":446973,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Miller, R. D.","contributorId":92693,"corporation":false,"usgs":true,"family":"Miller","given":"R. D.","affiliations":[],"preferred":false,"id":446974,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tsoflias, G.P.","contributorId":31225,"corporation":false,"usgs":true,"family":"Tsoflias","given":"G.P.","email":"","affiliations":[],"preferred":false,"id":446972,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70035119,"text":"70035119 - 2011 - Monitoring landscape change for LANDFIRE using multi-temporal satellite imagery and ancillary data","interactions":[],"lastModifiedDate":"2013-03-18T13:20:59","indexId":"70035119","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1942,"text":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Monitoring landscape change for LANDFIRE using multi-temporal satellite imagery and ancillary data","docAbstract":"LANDFIRE is a large interagency project designed to provide nationwide spatial data for fire management applications. As part of the effort, many 2000 vintage Landsat Thematic Mapper and Enhanced Thematic Mapper plus data sets were used in conjunction with a large volume of field information to generate detailed vegetation type and structure data sets for the entire United States. In order to keep these data sets current and relevant to resource managers, there was strong need to develop an approach for updating these products. We are using three different approaches for these purposes. These include: 1) updating using Landsat-derived historic and current fire burn information derived from the Monitoring Trends in Burn Severity project; 2) incorporating vegetation disturbance information derived from time series Landsat data analysis using the Vegetation Change Tracker; and 3) developing data products that capture subtle intra-state disturbance such as those related to insects and disease using either Landsat or the Moderate Resolution Imaging Spectroradiometer (MODIS). While no one single approach provides all of the land cover change and update information required, we believe that a combination of all three captures most of the disturbance conditions taking place that have relevance to the fire community.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Institute of Electrical and Electronics Engineers","publisherLocation":"New York, NY","doi":"10.1109/JSTARS.2010.2044478","usgsCitation":"Vogelmann, J., Kost, J.R., Tolk, B., Howard, S.M., Short, K., Chen, X., Huang, C., Pabst, K., and Rollins, M.G., 2011, Monitoring landscape change for LANDFIRE using multi-temporal satellite imagery and ancillary data: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, v. 4, no. 2, p. 252-264, https://doi.org/10.1109/JSTARS.2010.2044478.","startPage":"252","endPage":"264","numberOfPages":"13","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":475055,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.473.2217","text":"External Repository"},{"id":215417,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1109/JSTARS.2010.2044478"},{"id":243223,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"4","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5dbae4b0c8380cd7056f","contributors":{"authors":[{"text":"Vogelmann, James E. 0000-0002-0804-5823 vogel@usgs.gov","orcid":"https://orcid.org/0000-0002-0804-5823","contributorId":649,"corporation":false,"usgs":true,"family":"Vogelmann","given":"James E.","email":"vogel@usgs.gov","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":449369,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kost, Jay R. jkost@usgs.gov","contributorId":3931,"corporation":false,"usgs":true,"family":"Kost","given":"Jay","email":"jkost@usgs.gov","middleInitial":"R.","affiliations":[],"preferred":true,"id":449371,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Tolk, Brian 0000-0002-9060-0266","orcid":"https://orcid.org/0000-0002-9060-0266","contributorId":62426,"corporation":false,"usgs":true,"family":"Tolk","given":"Brian","affiliations":[],"preferred":false,"id":449377,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Howard, Stephen M. 0000-0001-5255-5882 smhoward@usgs.gov","orcid":"https://orcid.org/0000-0001-5255-5882","contributorId":3483,"corporation":false,"usgs":true,"family":"Howard","given":"Stephen","email":"smhoward@usgs.gov","middleInitial":"M.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":449370,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Short, Karen","contributorId":33940,"corporation":false,"usgs":true,"family":"Short","given":"Karen","affiliations":[],"preferred":false,"id":449375,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Chen, Xuexia","contributorId":14213,"corporation":false,"usgs":true,"family":"Chen","given":"Xuexia","affiliations":[],"preferred":false,"id":449373,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Huang, Chengquan","contributorId":25378,"corporation":false,"usgs":true,"family":"Huang","given":"Chengquan","affiliations":[],"preferred":false,"id":449374,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Pabst, Kari","contributorId":12284,"corporation":false,"usgs":true,"family":"Pabst","given":"Kari","email":"","affiliations":[],"preferred":false,"id":449372,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Rollins, Matthew G.","contributorId":54695,"corporation":false,"usgs":true,"family":"Rollins","given":"Matthew","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":449376,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70035151,"text":"70035151 - 2011 - The contribution of competition to tree mortality in old-growth coniferous forests","interactions":[],"lastModifiedDate":"2021-03-01T17:59:39.957482","indexId":"70035151","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1687,"text":"Forest Ecology and Management","active":true,"publicationSubtype":{"id":10}},"title":"The contribution of competition to tree mortality in old-growth coniferous forests","docAbstract":"<p id=\"spar0010\">Competition is a well-documented contributor to tree mortality in temperate forests, with numerous studies documenting a relationship between tree death and the competitive environment. Models frequently rely on competition as the only non-random mechanism affecting tree mortality. However, for mature forests, competition may cease to be the primary driver of mortality.</p><p id=\"spar0015\">We use a large, long-term dataset to study the importance of competition in determining tree mortality in old-growth forests on the western slope of the Sierra Nevada of California, U.S.A. We make use of the comparative spatial configuration of dead and live trees, changes in tree spatial pattern through time, and field assessments of contributors to an individual tree's death to quantify competitive effects.</p><p id=\"spar0020\">Competition was apparently a significant contributor to tree mortality in these forests. Trees that died tended to be in more competitive environments than trees that survived, and suppression frequently appeared as a factor contributing to mortality. On the other hand, based on spatial pattern analyses, only three of 14 plots demonstrated compelling evidence that competition was dominating mortality. Most of the rest of the plots fell within the expectation for random mortality, and three fit neither the random nor the competition model. These results suggest that while competition is often playing a significant role in tree mortality processes in these forests it only infrequently governs those processes. In addition, the field assessments indicated a substantial presence of biotic mortality agents in trees that died.</p><p id=\"spar0025\">While competition is almost certainly important, demographics in these forests cannot accurately be characterized without a better grasp of other mortality processes. In particular, we likely need a better understanding of biotic agents and their interactions with one another and with competition.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.foreco.2010.12.035","issn":"03781127","usgsCitation":"Das, A., Battles, J., Stephenson, N., and van Mantgem, P.J., 2011, The contribution of competition to tree mortality in old-growth coniferous forests: Forest Ecology and Management, v. 261, no. 7, p. 1203-1213, https://doi.org/10.1016/j.foreco.2010.12.035.","productDescription":"11 p.","startPage":"1203","endPage":"1213","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":243257,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215450,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.foreco.2010.12.035"}],"country":"United States","state":"California","otherGeospatial":"Sequoia National Park and Yosemite National Park","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -120.9814453125,\n              38.61687046392973\n            ],\n            [\n              -120.34423828125,\n              37.35269280367274\n            ],\n            [\n              -119.35546875000001,\n              36.82687474287728\n            ],\n            [\n              -118.69628906249999,\n              35.71083783530009\n            ],\n            [\n              -117.59765625,\n              35.67514743608467\n            ],\n            [\n              -118.125,\n              37.00255267215955\n            ],\n            [\n              -119.0478515625,\n              38.013476231041935\n            ],\n            [\n              -120.234375,\n              38.95940879245423\n            ],\n            [\n              -120.95947265624999,\n              39.198205348894795\n            ],\n            [\n              -121.4208984375,\n              38.8225909761771\n            ],\n            [\n              -120.9814453125,\n              38.61687046392973\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"261","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baa5ce4b08c986b3227ee","contributors":{"authors":[{"text":"Das, A.","contributorId":45097,"corporation":false,"usgs":true,"family":"Das","given":"A.","email":"","affiliations":[],"preferred":false,"id":449505,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Battles, J.","contributorId":35973,"corporation":false,"usgs":true,"family":"Battles","given":"J.","affiliations":[],"preferred":false,"id":449504,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stephenson, N.L.","contributorId":17559,"corporation":false,"usgs":true,"family":"Stephenson","given":"N.L.","email":"","affiliations":[],"preferred":false,"id":449503,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"van Mantgem, Phillip J. 0000-0002-3068-9422 pvanmantgem@usgs.gov","orcid":"https://orcid.org/0000-0002-3068-9422","contributorId":2838,"corporation":false,"usgs":true,"family":"van Mantgem","given":"Phillip","email":"pvanmantgem@usgs.gov","middleInitial":"J.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":449506,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034672,"text":"70034672 - 2011 - Divergence in forest-type response to climate and weather: Evidence for regional links between forest-type evenness and net primary productivity","interactions":[],"lastModifiedDate":"2021-04-14T11:50:07.497015","indexId":"70034672","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1478,"text":"Ecosystems","active":true,"publicationSubtype":{"id":10}},"title":"Divergence in forest-type response to climate and weather: Evidence for regional links between forest-type evenness and net primary productivity","docAbstract":"<p><span>Climate change is altering long-term climatic conditions and increasing the magnitude of weather fluctuations. Assessing the consequences of these changes for terrestrial ecosystems requires understanding how different vegetation types respond to climate and weather. This study examined 20&nbsp;years of regional-scale remotely sensed net primary productivity (NPP) in forests of the northern Lake States to identify how the relationship between NPP and climate or weather differ among forest types, and if NPP patterns are influenced by landscape-scale evenness of forest-type abundance. These results underscore the positive relationship between temperature and NPP. Importantly, these results indicate significant differences among broadly defined forest types in response to both climate and weather. Essentially all weather variables that were strongly related to annual NPP displayed significant differences among forest types, suggesting complementarity in response to environmental fluctuations. In addition, this study found that forest-type evenness (within 8&nbsp;×&nbsp;8&nbsp;km</span><sup>2</sup><span>&nbsp;areas) is positively related to long-term NPP mean and negatively related to NPP variability, suggesting that NPP in pixels with greater forest-type evenness is both higher and more stable through time. This is landscape- to subcontinental-scale evidence of a relationship between primary productivity and one measure of biological diversity. These results imply that anthropogenic or natural processes that influence the proportional abundance of forest types within landscapes may influence long-term productivity patterns.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s10021-011-9460-8","issn":"14329840","usgsCitation":"Bradford, J., 2011, Divergence in forest-type response to climate and weather: Evidence for regional links between forest-type evenness and net primary productivity: Ecosystems, v. 14, no. 6, p. 975-986, https://doi.org/10.1007/s10021-011-9460-8.","productDescription":"12 p","startPage":"975","endPage":"986","numberOfPages":"12","costCenters":[],"links":[{"id":243633,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":385072,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://link.springer.com/article/10.1007/s10021-011-9460-8"}],"volume":"14","issue":"6","noUsgsAuthors":false,"publicationDate":"2011-06-23","publicationStatus":"PW","scienceBaseUri":"505a0348e4b0c8380cd503e1","contributors":{"authors":[{"text":"Bradford, J.B.","contributorId":62036,"corporation":false,"usgs":true,"family":"Bradford","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":446971,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70034601,"text":"70034601 - 2011 - Demographic and genetic status of an isolated population of bog turtles (Glyptemys muhlenbergii): Implications for managing small populations of long-lived animals","interactions":[],"lastModifiedDate":"2021-04-19T11:55:40.038277","indexId":"70034601","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1324,"text":"Conservation Genetics","active":true,"publicationSubtype":{"id":10}},"title":"Demographic and genetic status of an isolated population of bog turtles (Glyptemys muhlenbergii): Implications for managing small populations of long-lived animals","docAbstract":"<p><span>In this study, we sought to determine the population stability and genetic diversity of one isolated population of the federally-threatened bog turtle (</span><i>Glyptemys muhlenbergii</i><span>) in North Carolina. Using capture–recapture data, we estimated adult survival and population growth rate from 1992 to 2007. We found that the population decreased from an estimated 36 adult turtles in 1994 to approximately 11 adult turtles in 2007. We found a constant adult survival of 0.893 (SE&nbsp;=&nbsp;0.018, 95% confidence interval, 0.853–0.924) between 1992 and 2007. Using 18 microsatellite markers, we compared the genetic status of this population with five other bog turtle populations. The target population displayed allelic richness (4.8&nbsp;±&nbsp;0.5) and observed heterozygosity (0.619&nbsp;±&nbsp;0.064) within the range of the other bog turtle populations. Coalescent analysis of population growth rate, effective population size, and timing of population structuring event also indicated the genetics of the target population were comparable to the other populations studied. Estimates of effective population size were a proportion of the census size in all populations except the target population, in which the effective population size was larger than the census size (30 turtles vs. 11 turtles). We attribute the high genetic diversity in the target population to the presence of multiple generations of old turtles. This study illustrates that the demographic status of populations of long-lived species may not be reflected genetically if a decline occurred recently. Consequently, the genetic integrity of populations of long-lived animals experiencing rapid demographic bottlenecks may be preserved through conservation efforts effective in addressing demographic problems.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s10592-011-0257-2","issn":"15660621","usgsCitation":"Pittman, S.E., King, T., Faurby, S., and Dorcas, M., 2011, Demographic and genetic status of an isolated population of bog turtles (Glyptemys muhlenbergii): Implications for managing small populations of long-lived animals: Conservation Genetics, v. 12, no. 6, p. 1589-1601, https://doi.org/10.1007/s10592-011-0257-2.","productDescription":"13 p.","startPage":"1589","endPage":"1601","numberOfPages":"13","costCenters":[],"links":[{"id":243542,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"12","issue":"6","noUsgsAuthors":false,"publicationDate":"2011-08-21","publicationStatus":"PW","scienceBaseUri":"5059fe7ee4b0c8380cd4ed60","contributors":{"authors":[{"text":"Pittman, Shannon E.","contributorId":22169,"corporation":false,"usgs":false,"family":"Pittman","given":"Shannon","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":446603,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"King, T.L.","contributorId":93416,"corporation":false,"usgs":true,"family":"King","given":"T.L.","email":"","affiliations":[],"preferred":false,"id":446605,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Faurby, S.","contributorId":95291,"corporation":false,"usgs":true,"family":"Faurby","given":"S.","email":"","affiliations":[],"preferred":false,"id":446606,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dorcas, M.E.","contributorId":34310,"corporation":false,"usgs":true,"family":"Dorcas","given":"M.E.","affiliations":[],"preferred":false,"id":446604,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034538,"text":"70034538 - 2011 - <sup>40</sup>Ar/<sup>39</sup>Ar dating of tuff vents in the Campi Flegrei caldera (southern Italy): Toward a new chronostratigraphic reconstruction of the Holocene volcanic activity","interactions":[],"lastModifiedDate":"2016-08-26T19:21:48","indexId":"70034538","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1109,"text":"Bulletin of Volcanology","active":true,"publicationSubtype":{"id":10}},"title":"<sup>40</sup>Ar/<sup>39</sup>Ar dating of tuff vents in the Campi Flegrei caldera (southern Italy): Toward a new chronostratigraphic reconstruction of the Holocene volcanic activity","docAbstract":"<p><span>The Campi Flegrei hosts numerous monogenetic vents inferred to be younger than the 15&nbsp;ka Neapolitan Yellow Tuff. Sanidine crystals from the three young Campi Flegrei vents of Fondi di Baia, Bacoli and Nisida were dated using </span><sup>40</sup><span>Ar/</span><sup>39</sup><span>Ar geochronology. These vents, together with several other young edifices, occur roughly along the inner border of the Campi Flegrei caldera, suggesting that the volcanic conduits are controlled by caldera-bounding faults. Plateau ages of ∼9.6&nbsp;ka (Fondi di Baia), ∼8.6&nbsp;ka (Bacoli) and ∼3.9&nbsp;ka (Nisida) indicate eruptive activity during intervals previously interpreted as quiescent. A critical revision, involving calendar age correction of literature </span><sup>14</sup><span>C data and available </span><sup>40</sup><span>Ar/</span><sup>39</sup><span>Ar age data, is presented. A new reference chronostratigraphic framework for Holocene Phlegrean activity, which significantly differs from the previously adopted ones, is proposed. This has important implications for understanding the Campi Flegrei eruptive history and, ultimately, for the evaluation of related volcanic risk and hazard, for which the inferred history of its recent activity is generally taken into account.</span></p>","language":"English","publisher":"Springer International","doi":"10.1007/s00445-011-0478-8","issn":"02588900","usgsCitation":"Fedele, L., Insinga, D., Calvert, A., Morra, V., Perrotta, A., and Scarpati, C., 2011, <sup>40</sup>Ar/<sup>39</sup>Ar dating of tuff vents in the Campi Flegrei caldera (southern Italy): Toward a new chronostratigraphic reconstruction of the Holocene volcanic activity: Bulletin of Volcanology, v. 73, no. 9, p. 1323-1336, https://doi.org/10.1007/s00445-011-0478-8.","productDescription":"14 p.","startPage":"1323","endPage":"1336","costCenters":[],"links":[{"id":243536,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Italy","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              14.11245346069336,\n              40.800166251701846\n            ],\n            [\n              14.11245346069336,\n              40.83667117059108\n            ],\n            [\n              14.168758392333984,\n              40.83667117059108\n            ],\n            [\n              14.168758392333984,\n              40.800166251701846\n            ],\n            [\n              14.11245346069336,\n              40.800166251701846\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"73","issue":"9","noUsgsAuthors":false,"publicationDate":"2011-05-05","publicationStatus":"PW","scienceBaseUri":"57c1682de4b0f2f0ceb9075c","contributors":{"authors":[{"text":"Fedele, L.","contributorId":89022,"corporation":false,"usgs":true,"family":"Fedele","given":"L.","email":"","affiliations":[],"preferred":false,"id":446284,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Insinga, D.D.","contributorId":24645,"corporation":false,"usgs":true,"family":"Insinga","given":"D.D.","affiliations":[],"preferred":false,"id":446280,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Calvert, A.T.","contributorId":49969,"corporation":false,"usgs":true,"family":"Calvert","given":"A.T.","email":"","affiliations":[],"preferred":false,"id":446283,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Morra, V.","contributorId":101887,"corporation":false,"usgs":true,"family":"Morra","given":"V.","affiliations":[],"preferred":false,"id":446285,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Perrotta, A.","contributorId":40430,"corporation":false,"usgs":true,"family":"Perrotta","given":"A.","email":"","affiliations":[],"preferred":false,"id":446282,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Scarpati, C.","contributorId":34726,"corporation":false,"usgs":true,"family":"Scarpati","given":"C.","affiliations":[],"preferred":false,"id":446281,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70034535,"text":"70034535 - 2011 - Provenance of Des Moines lobe till records ice-stream catchment evolution during Laurentide deglaciation","interactions":[],"lastModifiedDate":"2021-04-16T20:39:44.247527","indexId":"70034535","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1068,"text":"Boreas","active":true,"publicationSubtype":{"id":10}},"title":"Provenance of Des Moines lobe till records ice-stream catchment evolution during Laurentide deglaciation","docAbstract":"<p><span>Mapping and analysis of deposits of the Des Moines lobe of the Laurentide Ice Sheet, active after the Last Glacial Maximum (LGM), reveal several texturally and lithologically distinct tills within what had been considered to be a homogeneous deposit. Although the differences between tills are subtle, minor distinctions are predictable and mappable, and till sheets within the area covered by the lobe can be correlated for hundreds of kilometres parallel to ice flow. Lateral till‐sheet contacts are abrupt or overlap in a narrow zone, coincident with a geomorphic discontinuity interpreted to be a shear margin. Till sheets 10 to 20 m thick show mixing in their lower 2 to 3 m. We suggest that: (i) lithologically distinct till sheets correspond to unique ice‐stream source areas; (ii) the sequence of tills deposited by the Des Moines lobe was the result of the evolution and varying dominance of nearby and competing ice streams and their tributaries; and (iii) in at least one instance, more than one ice stream simultaneously contributed to the lobe. Therefore the complex sequence of tills of subtly different provenances, and the unconformities between them record the evolution of an ice‐catchment area during Laurentide Ice Sheet drawdown. Till provenance data suggest that, after till is created in the ice‐stream source area, the subglacial conditions required for transporting till decline and incorporation of new material is limited.</span></p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1502-3885.2011.00208.x","issn":"03009483","usgsCitation":"Lusardi, B., Jennings, C., and Harris, K., 2011, Provenance of Des Moines lobe till records ice-stream catchment evolution during Laurentide deglaciation: Boreas, v. 40, no. 4, p. 585-597, https://doi.org/10.1111/j.1502-3885.2011.00208.x.","productDescription":"13 p.","startPage":"585","endPage":"597","numberOfPages":"13","costCenters":[],"links":[{"id":243473,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215654,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1502-3885.2011.00208.x"}],"volume":"40","issue":"4","noUsgsAuthors":false,"publicationDate":"2011-05-05","publicationStatus":"PW","scienceBaseUri":"505a8fa0e4b0c8380cd7f88f","contributors":{"authors":[{"text":"Lusardi, B.A.","contributorId":21782,"corporation":false,"usgs":true,"family":"Lusardi","given":"B.A.","email":"","affiliations":[],"preferred":false,"id":446265,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jennings, C.E.","contributorId":45890,"corporation":false,"usgs":true,"family":"Jennings","given":"C.E.","email":"","affiliations":[],"preferred":false,"id":446266,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Harris, K.L.","contributorId":17063,"corporation":false,"usgs":true,"family":"Harris","given":"K.L.","email":"","affiliations":[],"preferred":false,"id":446264,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70035152,"text":"70035152 - 2011 - Distribution of lake sturgeon in New York: 11 years of restoration management","interactions":[],"lastModifiedDate":"2021-03-01T17:30:50.073762","indexId":"70035152","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":737,"text":"American Midland Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"Distribution of lake sturgeon in New York: 11 years of restoration management","docAbstract":"<p><span>Lake sturgeon (</span><span class=\"genus-species\">Acipenser fulvescens</span><span>) are native within the Lake Ontario drainage basin and listed as threatened by New York State. In 1995 the New York State Department of Environmental Conservation (NYSDEC) initiated restoration management of lake sturgeon. This management included both protection of extant populations and stocking of uninhabited historic waters with juvenile sturgeon. A list compiled by NYSDEC of observations of lake sturgeon from New York State waters for the period encompassing 1800–2005 was combined with recent observations through 2008 and formatted (Geographic Information System) to allow mapping of sturgeon geographical distribution. Distributions of pre- and post-restoration sturgeon were examined by occurrence and type of observation. Distribution patterns indicated lakes and rivers with current sturgeon presence have increased from five to eight, which was the first-phase goal of the New York Lake Sturgeon Recovery Plan. Lake sturgeon have started to expand into joining water to include the Indian R., Oneida R., Seneca R. and Oswego R. The protected historic populations in the Niagara R., Grasse R., St. Lawrence R., and Lakes Erie and Ontario continue to have low numbers of sturgeon observations. This summary of mapped lake sturgeon distribution information will help in guiding research assessments to waters containing substantial populations. These accessible reaches provide a generous advantage to the released juveniles as they move toward the next goal of restoration, spawning of sturgeon in targeted waters.</span></p>","largerWorkTitle":"American Midland Naturalist","language":"English","publisher":"BioOne","doi":"10.1674/0003-0031-165.2.364","issn":"00030031","usgsCitation":"Chalupnicki, M., Dittman, D.E., and Carlson, D., 2011, Distribution of lake sturgeon in New York: 11 years of restoration management: American Midland Naturalist, v. 165, no. 2, p. 364-371, https://doi.org/10.1674/0003-0031-165.2.364.","productDescription":"8 p.","startPage":"364","endPage":"371","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":243258,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215451,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1674/0003-0031-165.2.364"}],"country":"United States","state":"New York","otherGeospatial":"Lake Ontario","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -79.9365234375,\n              43.26120612479979\n            ],\n            [\n              -78.046875,\n              43.004647127794435\n            ],\n            [\n              -75.8056640625,\n              43.58039085560784\n            ],\n            [\n              -75.7177734375,\n              44.15068115978094\n            ],\n            [\n              -76.9482421875,\n              44.465151013519616\n            ],\n            [\n              -79.1015625,\n              44.24519901522129\n            ],\n            [\n              -79.9365234375,\n              43.48481212891603\n            ],\n            [\n              -79.9365234375,\n              43.26120612479979\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"165","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a02dce4b0c8380cd50222","contributors":{"authors":[{"text":"Chalupnicki, Marc 0000-0002-3792-9345 mchalupnicki@usgs.gov","orcid":"https://orcid.org/0000-0002-3792-9345","contributorId":173643,"corporation":false,"usgs":true,"family":"Chalupnicki","given":"Marc","email":"mchalupnicki@usgs.gov","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":449508,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dittman, Dawn E. 0000-0002-0711-3732 ddittman@usgs.gov","orcid":"https://orcid.org/0000-0002-0711-3732","contributorId":2762,"corporation":false,"usgs":true,"family":"Dittman","given":"Dawn","email":"ddittman@usgs.gov","middleInitial":"E.","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":449507,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Carlson, D.M.","contributorId":45537,"corporation":false,"usgs":true,"family":"Carlson","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":449509,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70034494,"text":"70034494 - 2011 - Surface (sea floor) and near-surface (box cores) sediment mineralogy in Baffin Bay as a key to sediment provenance and ice sheet variations","interactions":[],"lastModifiedDate":"2021-04-19T19:20:44.228649","indexId":"70034494","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1168,"text":"Canadian Journal of Earth Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Surface (sea floor) and near-surface (box cores) sediment mineralogy in Baffin Bay as a key to sediment provenance and ice sheet variations","docAbstract":"<p><span>To better understand the glacial history of the ice sheets surrounding Baffin Bay and to provide information on sediment pathways, samples from 82 seafloor grabs and core tops, and from seven box cores were subjected to quantitative X-ray diffraction weight percent (wt.%) analysis of the &lt;2&nbsp;mm sediment fraction. The samples were collected between 67°N and 78°N, in water depths of 155 to 2375&nbsp;m and were retrieved on cruises between A.D. 1964 and 2009. Grain size, magnetic characteristics, and colour reflectance data were also obtained on many of the samples. Twenty-one non-clay and 10 clay mineral species were identified; the average wt.% of the non-clay minerals was 70% and was dominated by quartz, various feldspars, and dolomite, whereas the dominant clay minerals were 1 M illite, biotite, and chlorite. Cluster analysis on principal component scores identified three main mineral groups, which also had strong associations with grain size and sediment magnetic properties. Box cores from the deep central basin (&gt;2000&nbsp;m) all show an abrupt drop in calcite wt.% (post-5 cal ka BP?) following a major peak in detrital carbonate (mainly dolomite). This dolomite-rich detrital carbonate (DC) event in JR175BC06 is possibly coeval with the Younger Dryas cold event. Four possible glacial-sourced end members were employed in a compositional unmixing algorithm to gain insight into down core changes in sediment provenance at the deep central basin. Estimates of the rates of sediment accumulation in the central basin are only in the range of 2 to 4&nbsp;cm/cal ka, surprisingly low given the glaciated nature of the surrounding land.</span></p>","language":"English","publisher":"Canadian Science Publishing","doi":"10.1139/e11-021","issn":"00084077","usgsCitation":"Andrews, J.T., and Eberl, D.D., 2011, Surface (sea floor) and near-surface (box cores) sediment mineralogy in Baffin Bay as a key to sediment provenance and ice sheet variations: Canadian Journal of Earth Sciences, v. 48, no. 9, p. 1307-1328, https://doi.org/10.1139/e11-021.","productDescription":"22 p.","startPage":"1307","endPage":"1328","costCenters":[],"links":[{"id":243402,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215588,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1139/e11-021"}],"otherGeospatial":"Baffin Bay","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -86.1328125,\n              76.05850791800292\n            ],\n            [\n              -63.54492187500001,\n              65.54936668811527\n            ],\n            [\n              -46.58203125,\n              66.96447630005638\n            ],\n            [\n              -49.833984375,\n              73.52839948765174\n            ],\n            [\n              -67.060546875,\n              78.56048828398782\n            ],\n            [\n              -77.51953125,\n              79.07181201408547\n            ],\n            [\n              -86.1328125,\n              77.2544787022853\n            ],\n            [\n              -86.1328125,\n              76.05850791800292\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"48","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9f85e4b08c986b31e646","contributors":{"authors":[{"text":"Andrews, John T.","contributorId":79678,"corporation":false,"usgs":true,"family":"Andrews","given":"John","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":446071,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Eberl, D. D.","contributorId":66282,"corporation":false,"usgs":true,"family":"Eberl","given":"D.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":446070,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70035325,"text":"70035325 - 2011 - Generalized bootstrap method for assessment of uncertainty in semivariogram inference","interactions":[],"lastModifiedDate":"2018-09-20T15:28:47","indexId":"70035325","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2701,"text":"Mathematical Geosciences","active":true,"publicationSubtype":{"id":10}},"title":"Generalized bootstrap method for assessment of uncertainty in semivariogram inference","docAbstract":"<p><span>The semivariogram and its related function, the covariance, play a central role in classical geostatistics for modeling the average continuity of spatially correlated attributes. Whereas all methods are formulated in terms of the true semivariogram, in practice what can be used are estimated semivariograms and models based on samples. A generalized form of the bootstrap method to properly model spatially correlated data is used to advance knowledge about the reliability of empirical semivariograms and semivariogram models based on a single sample. Among several methods available to generate spatially correlated resamples, we selected a method based on the LU decomposition and used several examples to illustrate the approach. The first one is a synthetic, isotropic, exhaustive sample following a normal distribution, the second example is also a synthetic but following a non-Gaussian random field, and a third empirical sample consists of actual raingauge measurements. Results show wider confidence intervals than those found previously by others with inadequate application of the bootstrap. Also, even for the Gaussian example, distributions for estimated semivariogram values and model parameters are positively skewed. In this sense, bootstrap percentile confidence intervals, which are not centered around the empirical semivariogram and do not require distributional assumptions for its construction, provide an achieved coverage similar to the nominal coverage. The latter cannot be achieved by symmetrical confidence intervals based on the standard error, regardless if the standard error is estimated from a parametric equation or from bootstrap.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s11004-010-9269-6","issn":"18748961","usgsCitation":"Olea, R., and Pardo-Iguzquiza, E., 2011, Generalized bootstrap method for assessment of uncertainty in semivariogram inference: Mathematical Geosciences, v. 43, no. 2, p. 203-228, https://doi.org/10.1007/s11004-010-9269-6.","productDescription":"26 p.","startPage":"203","endPage":"228","ipdsId":"IP-013963","costCenters":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":242905,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215127,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11004-010-9269-6"}],"volume":"43","issue":"2","noUsgsAuthors":false,"publicationDate":"2010-02-24","publicationStatus":"PW","scienceBaseUri":"505a1515e4b0c8380cd54cad","contributors":{"authors":[{"text":"Olea, Ricardo A. 0000-0003-4308-0808","orcid":"https://orcid.org/0000-0003-4308-0808","contributorId":26436,"corporation":false,"usgs":true,"family":"Olea","given":"Ricardo A.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":450190,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pardo-Iguzquiza, E.","contributorId":34345,"corporation":false,"usgs":true,"family":"Pardo-Iguzquiza","given":"E.","affiliations":[],"preferred":false,"id":450191,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70035327,"text":"70035327 - 2011 - Plant invasions in mountains: Global lessons for better management","interactions":[],"lastModifiedDate":"2021-02-25T17:51:06.020363","indexId":"70035327","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2790,"text":"Mountain Research and Development","active":true,"publicationSubtype":{"id":10}},"title":"Plant invasions in mountains: Global lessons for better management","docAbstract":"<p><span>Mountains are one of few ecosystems little affected by plant invasions. However, the threat of invasion is likely to increase because of climate change, greater anthropogenic land use, and continuing novel introductions. Preventive management, therefore, will be crucial but can be difficult to promote when more pressing problems are unresolved and predictions are uncertain. In this essay, we use management case studies from 7 mountain regions to identify common lessons for effective preventive action. The degree of plant invasion in mountains was variable in the 7 regions as was the response to invasion, which ranged from lack of awareness by land managers of the potential impact in Chile and Kashmir to well-organized programs of prevention and containment in the United States (Hawaii and the Pacific Northwest), including prevention at low altitude. In Australia, awareness of the threat grew only after disruptive invasions. In South Africa, the economic benefits of removing alien plants are well recognized and funded in the form of employment programs. In the European Alps, there is little need for active management because no invasive species pose an immediate threat. From these case studies, we identify lessons for management of plant invasions in mountain ecosystems: (i) prevention is especially important in mountains because of their rugged terrain, where invasions can quickly become unmanageable; (ii) networks at local to global levels can assist with awareness raising and better prioritization of management actions; (iii) the economic importance of management should be identified and articulated; (iv) public acceptance of management programs will make them more effective; and (v) climate change needs to be considered. We suggest that comparisons of local case studies, such as those we have presented, have a pivotal place in the proactive solution of global change issues.</span></p>","language":"English","publisher":"BioOne","doi":"10.1659/MRD-JOURNAL-D-11-00082.1","issn":"02764741","usgsCitation":"McDougall, K., Khuroo, A., Loope, L.L., Parks, C., Pauchard, A., Reshi, Z., Rushworth, I., and Kueffer, C., 2011, Plant invasions in mountains: Global lessons for better management: Mountain Research and Development, v. 31, no. 4, p. 380-387, https://doi.org/10.1659/MRD-JOURNAL-D-11-00082.1.","productDescription":"8 p.","startPage":"380","endPage":"387","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-033032","costCenters":[{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true}],"links":[{"id":475478,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1659/mrd-journal-d-11-00082.1","text":"Publisher Index Page"},{"id":242938,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7bf7e4b0c8380cd7970b","contributors":{"authors":[{"text":"McDougall, K.L.","contributorId":32366,"corporation":false,"usgs":true,"family":"McDougall","given":"K.L.","email":"","affiliations":[],"preferred":false,"id":450198,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Khuroo, A.A.","contributorId":60870,"corporation":false,"usgs":true,"family":"Khuroo","given":"A.A.","affiliations":[],"preferred":false,"id":450203,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Loope, Lloyd L.","contributorId":107848,"corporation":false,"usgs":true,"family":"Loope","given":"Lloyd","email":"","middleInitial":"L.","affiliations":[{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true}],"preferred":false,"id":450200,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Parks, C.G.","contributorId":12282,"corporation":false,"usgs":true,"family":"Parks","given":"C.G.","email":"","affiliations":[],"preferred":false,"id":450196,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Pauchard, A.","contributorId":15421,"corporation":false,"usgs":true,"family":"Pauchard","given":"A.","affiliations":[],"preferred":false,"id":450197,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Reshi, Z.A.","contributorId":33937,"corporation":false,"usgs":true,"family":"Reshi","given":"Z.A.","affiliations":[],"preferred":false,"id":450199,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Rushworth, I.","contributorId":58487,"corporation":false,"usgs":true,"family":"Rushworth","given":"I.","email":"","affiliations":[],"preferred":false,"id":450202,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Kueffer, C.","contributorId":55660,"corporation":false,"usgs":true,"family":"Kueffer","given":"C.","affiliations":[],"preferred":false,"id":450201,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70035328,"text":"70035328 - 2011 - Satellite and ground observations of the June 2009 eruption of Sarychev Peak volcano, Matua Island, Central Kuriles","interactions":[],"lastModifiedDate":"2021-03-08T12:37:22.253723","indexId":"70035328","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1109,"text":"Bulletin of Volcanology","active":true,"publicationSubtype":{"id":10}},"title":"Satellite and ground observations of the June 2009 eruption of Sarychev Peak volcano, Matua Island, Central Kuriles","docAbstract":"<p><span>After 33&nbsp;years of repose, one of the most active volcanoes of the Kurile island arc—Sarychev Peak on Matua Island in the Central Kuriles—erupted violently on June 11, 2009. The eruption lasted 9&nbsp;days and stands among the largest of recent historical eruptions in the Kurile Island chain. Satellite monitoring of the eruption, using Moderate Resolution Imaging Spectroradiometer, Meteorological Agency Multifunctional Transport Satellite, and Advanced Very High Resolution Radiometer data, indicated at least 23 separate explosions between 11 and 16 June 2009. Eruptive clouds reached altitudes of generally 8–16&nbsp;km above sea level (ASL) and in some cases up to 21&nbsp;km asl. Clouds of volcanic ash and gas stretched to the north and northwest up to 1,500&nbsp;km and to the southeast for more than 3,000&nbsp;km. For the first time in recorded history, ash fall occurred on Sakhalin Island and in the northeast sector of the Khabarovsky Region, Russia. Based on satellite image analysis and reconnaissance field studies in the summer of 2009, the eruption produced explosive tephra deposits with an estimated bulk volume of 0.4&nbsp;km</span><sup>3</sup><span>. The eruption is considered to have a Volcanic Explosivity Index of 4. Because the volcano is remote, there was minimal risk to people or infrastructure on the ground. Aviation transport, however, was significantly disrupted because of the proximity of air routes to the volcano.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s00445-011-0481-0","issn":"02588900","usgsCitation":"Rybin, A., Chibisova, M., Webley, P., Steensen, T., Izbekov, P., Neal, C.A., and Realmuto, V., 2011, Satellite and ground observations of the June 2009 eruption of Sarychev Peak volcano, Matua Island, Central Kuriles: Bulletin of Volcanology, v. 73, no. 9, p. 1377-1392, https://doi.org/10.1007/s00445-011-0481-0.","productDescription":"16 p.","startPage":"1377","endPage":"1392","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":242939,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Russia, Japan","otherGeospatial":"Kuril Islands","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              145.72265625,\n              42.293564192170095\n            ],\n            [\n              155.21484375,\n              46.558860303117164\n            ],\n            [\n              159.697265625,\n              52.3755991766591\n            ],\n            [\n              154.599609375,\n              52.855864177853974\n            ],\n            [\n              146.6015625,\n              46.49839225859763\n            ],\n            [\n              143.173828125,\n              45.089035564831036\n            ],\n            [\n              145.72265625,\n              42.293564192170095\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"73","issue":"9","noUsgsAuthors":false,"publicationDate":"2011-05-15","publicationStatus":"PW","scienceBaseUri":"505b86cee4b08c986b316133","contributors":{"authors":[{"text":"Rybin, A.","contributorId":83754,"corporation":false,"usgs":true,"family":"Rybin","given":"A.","affiliations":[],"preferred":false,"id":450207,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chibisova, M.","contributorId":39212,"corporation":false,"usgs":true,"family":"Chibisova","given":"M.","affiliations":[],"preferred":false,"id":450204,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Webley, P.","contributorId":96915,"corporation":false,"usgs":false,"family":"Webley","given":"P.","affiliations":[{"id":13097,"text":"Geophysical Institute, University of Alaska Fairbanks","active":true,"usgs":false}],"preferred":false,"id":450209,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Steensen, T.","contributorId":108331,"corporation":false,"usgs":true,"family":"Steensen","given":"T.","email":"","affiliations":[],"preferred":false,"id":450210,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Izbekov, P.","contributorId":46748,"corporation":false,"usgs":true,"family":"Izbekov","given":"P.","affiliations":[],"preferred":false,"id":450205,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Neal, Christina A. 0000-0002-7697-7825 tneal@usgs.gov","orcid":"https://orcid.org/0000-0002-7697-7825","contributorId":131135,"corporation":false,"usgs":true,"family":"Neal","given":"Christina","email":"tneal@usgs.gov","middleInitial":"A.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":450208,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Realmuto, V.","contributorId":50746,"corporation":false,"usgs":true,"family":"Realmuto","given":"V.","email":"","affiliations":[],"preferred":false,"id":450206,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70035650,"text":"70035650 - 2011 - An Analysis of the Published Mineral Resource Estimates of the Haji-Gak Iron Deposit, Afghanistan","interactions":[],"lastModifiedDate":"2021-08-23T16:24:38.902248","indexId":"70035650","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2832,"text":"Natural Resources Research","onlineIssn":"1573-8981","printIssn":"1520-7439","active":true,"publicationSubtype":{"id":10}},"title":"An Analysis of the Published Mineral Resource Estimates of the Haji-Gak Iron Deposit, Afghanistan","docAbstract":"<p><span>The Haji-Gak iron deposit of eastern Bamyan Province, eastern Afghanistan, was studied extensively and resource calculations were made in the 1960s by Afghan and Russian geologists. Recalculation of the resource estimates verifies the original estimates for categories A (in-place resources known in detail), B (in-place resources known in moderate detail), and C</span><sub>1</sub><span>&nbsp;(in-place resources estimated on sparse data), totaling 110.8&nbsp;Mt, or about 6% of the resources as being supportable for the methods used in the 1960s. C</span><sub>2</sub><span>&nbsp;(based on a loose exploration grid with little data) resources are based on one ore grade from one drill hole, and P</span><sub>2</sub><span>&nbsp;(prognosis) resources are based on field observations, field measurements, and an ore grade derived from averaging grades from three better sampled ore bodies. C</span><sub>2</sub><span>&nbsp;and P</span><sub>2</sub><span>&nbsp;resources are 1,659.1&nbsp;Mt or about 94% of the total resources in the deposit. The vast P</span><sub>2</sub><span>&nbsp;resources have not been drilled or sampled to confirm their extent or quality. The purpose of this article is to independently evaluate the resources of the Haji-Gak iron deposit by using the available geologic and mineral resource information including geologic maps and cross sections, sampling data, and the analog-estimating techniques of the 1960s to determine the size and tenor of the deposit.</span></p>","largerWorkTitle":"Natural Resources Research","language":"English","publisher":"Springer Link","doi":"10.1007/s11053-011-9154-0","issn":"15207439","usgsCitation":"Sutphin, D., Renaud, K., and Drew, L., 2011, An Analysis of the Published Mineral Resource Estimates of the Haji-Gak Iron Deposit, Afghanistan: Natural Resources Research, v. 20, no. 4, p. 329-353, https://doi.org/10.1007/s11053-011-9154-0.","productDescription":"25 p.","startPage":"329","endPage":"353","costCenters":[],"links":[{"id":244266,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216399,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11053-011-9154-0"}],"country":"Afghanistan","otherGeospatial":"Haji-Gak iron deposit in Eastern Afghanistan","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              67.91748046874999,\n              34.00713506435885\n            ],\n            [\n              69.3511962890625,\n              34.00713506435885\n            ],\n            [\n              69.3511962890625,\n              35.250105158539355\n            ],\n            [\n              67.91748046874999,\n              35.250105158539355\n            ],\n            [\n              67.91748046874999,\n              34.00713506435885\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"20","issue":"4","noUsgsAuthors":false,"publicationDate":"2011-10-18","publicationStatus":"PW","scienceBaseUri":"5059e9d0e4b0c8380cd48491","contributors":{"authors":[{"text":"Sutphin, David M.","contributorId":53769,"corporation":false,"usgs":true,"family":"Sutphin","given":"David M.","affiliations":[],"preferred":false,"id":451625,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Renaud, Karine krenaud@usgs.gov","contributorId":195405,"corporation":false,"usgs":true,"family":"Renaud","given":"Karine","email":"krenaud@usgs.gov","affiliations":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"preferred":true,"id":451626,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Drew, Lawrence J. ldrew@usgs.gov","contributorId":190730,"corporation":false,"usgs":true,"family":"Drew","given":"Lawrence J.","email":"ldrew@usgs.gov","affiliations":[],"preferred":false,"id":451627,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70034440,"text":"70034440 - 2011 - A working environment for digital planetary data processing and mapping using ISIS and GRASS GIS","interactions":[],"lastModifiedDate":"2012-03-12T17:21:48","indexId":"70034440","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"A working environment for digital planetary data processing and mapping using ISIS and GRASS GIS","docAbstract":"Since the beginning of planetary exploration, mapping has been fundamental to summarize observations returned by scientific missions. Sensor-based mapping has been used to highlight specific features from the planetary surfaces by means of processing. Interpretative mapping makes use of instrumental observations to produce thematic maps that summarize observations of actual data into a specific theme. Geologic maps, for example, are thematic interpretative maps that focus on the representation of materials and processes and their relative timing. The advancements in technology of the last 30 years have allowed us to develop specialized systems where the mapping process can be made entirely in the digital domain. The spread of networked computers on a global scale allowed the rapid propagation of software and digital data such that every researcher can now access digital mapping facilities on his desktop. The efforts to maintain planetary missions data accessible to the scientific community have led to the creation of standardized digital archives that facilitate the access to different datasets by software capable of processing these data from the raw level to the map projected one. Geographic Information Systems (GIS) have been developed to optimize the storage, the analysis, and the retrieval of spatially referenced Earth based environmental geodata; since the last decade these computer programs have become popular among the planetary science community, and recent mission data start to be distributed in formats compatible with these systems. Among all the systems developed for the analysis of planetary and spatially referenced data, we have created a working environment combining two software suites that have similar characteristics in their modular design, their development history, their policy of distribution and their support system. The first, the Integrated Software for Imagers and Spectrometers (ISIS) developed by the United States Geological Survey, represents the state of the art for processing planetary remote sensing data, from the raw unprocessed state to the map projected product. The second, the Geographic Resources Analysis Support System (GRASS) is a Geographic Information System developed by an international team of developers, and one of the core projects promoted by the Open Source Geospatial Foundation (OSGeo). We have worked on enabling the combined use of these software systems throughout the set-up of a common user interface, the unification of the cartographic reference system nomenclature and the minimization of data conversion. Both software packages are distributed with free open source licenses, as well as the source code, scripts and configuration files hereafter presented. In this paper we describe our work done to merge these working environments into a common one, where the user benefits from functionalities of both systems without the need to switch or transfer data from one software suite to the other one. Thereafter we provide an example of its usage in the handling of planetary data and the crafting of a digital geologic map. ?? 2010 Elsevier Ltd. All rights reserved.","largerWorkTitle":"Planetary and Space Science","language":"English","doi":"10.1016/j.pss.2010.12.008","issn":"00320633","usgsCitation":"Frigeri, A., Hare, T., Neteler, M., Coradini, A., Federico, C., and Orosei, R., 2011, A working environment for digital planetary data processing and mapping using ISIS and GRASS GIS, <i>in</i> Planetary and Space Science, v. 59, no. 11-12, p. 1265-1272, https://doi.org/10.1016/j.pss.2010.12.008.","startPage":"1265","endPage":"1272","numberOfPages":"8","costCenters":[],"links":[{"id":216680,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.pss.2010.12.008"},{"id":244565,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"59","issue":"11-12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e620e4b0c8380cd47199","contributors":{"authors":[{"text":"Frigeri, A.","contributorId":85799,"corporation":false,"usgs":true,"family":"Frigeri","given":"A.","affiliations":[],"preferred":false,"id":445788,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hare, T.","contributorId":34503,"corporation":false,"usgs":true,"family":"Hare","given":"T.","email":"","affiliations":[],"preferred":false,"id":445784,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Neteler, M.","contributorId":37989,"corporation":false,"usgs":true,"family":"Neteler","given":"M.","email":"","affiliations":[],"preferred":false,"id":445786,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Coradini, A.","contributorId":34679,"corporation":false,"usgs":true,"family":"Coradini","given":"A.","affiliations":[],"preferred":false,"id":445785,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Federico, C.","contributorId":42460,"corporation":false,"usgs":true,"family":"Federico","given":"C.","email":"","affiliations":[],"preferred":false,"id":445787,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Orosei, R.","contributorId":28347,"corporation":false,"usgs":true,"family":"Orosei","given":"R.","affiliations":[],"preferred":false,"id":445783,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70035700,"text":"70035700 - 2011 - Watershed morphology of highland and mountain ecoregions in eastern Oklahoma","interactions":[],"lastModifiedDate":"2021-05-20T21:33:57.659927","indexId":"70035700","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3191,"text":"Professional Geographer","active":true,"publicationSubtype":{"id":10}},"title":"Watershed morphology of highland and mountain ecoregions in eastern Oklahoma","docAbstract":"<p><span>The fluvial system represents a nested hierarchy that reflects the relationship among different spatial and temporal scales. Within the hierarchy, larger scale variables influence the characteristics of the next lower nested scale. Ecoregions represent one of the largest scales in the fluvial hierarchy and are defined by recurring patterns of geology, climate, land use, soils, and potential natural vegetation. Watersheds, the next largest scale, are often nested into a single ecoregion and therefore have properties that are indicative of a given ecoregion. Differences in watershed morphology (relief, drainage density, circularity ratio, relief ratio, and ruggedness number) were evaluated among three ecoregions in eastern Oklahoma: Ozark Highlands, Boston Mountains, and Ouachita Mountains. These ecoregions were selected because of their high-quality stream resources and diverse aquatic communities and are of special management interest to the Oklahoma Department of Wildlife Conservation. One hundred thirty-four watersheds in first- through fourth-order streams were compared. Using a nonparametric, two-factor analysis of variance (α= 0.05) we concluded that the relief, drainage density, relief ratio, and ruggedness number all changed among ecoregion and stream order, whereas circularity ratio only changed with stream order. Our study shows that ecoregions can be used as a broad-scale framework for watershed management.</span></p>","language":"English","publisher":"Taylor & Francis","doi":"10.1080/00330124.2010.533575","usgsCitation":"Splinter, D.K., Dauwalter, D., Marston, R.A., and Fisher, W., 2011, Watershed morphology of highland and mountain ecoregions in eastern Oklahoma: Professional Geographer, v. 63, no. 1, p. 131-143, https://doi.org/10.1080/00330124.2010.533575.","productDescription":"13 p.","startPage":"131","endPage":"143","costCenters":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"links":[{"id":244077,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Oklahoma","otherGeospatial":"Eastern Oklahoma","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -94.6142578125,\n              36.721273880045004\n            ],\n            [\n              -94.76806640624999,\n              36.96744946416934\n            ],\n            [\n              -95.29541015625,\n              36.80928470205937\n            ],\n            [\n              -95.5810546875,\n              36.38591277287651\n            ],\n            [\n              -94.89990234375,\n              36.10237644873644\n            ],\n            [\n              -94.74609375,\n              34.92197103616377\n            ],\n            [\n              -95.3173828125,\n              34.831841149828655\n            ],\n            [\n              -96.1083984375,\n              34.687427949314845\n            ],\n            [\n              -96.064453125,\n              34.361576287484176\n            ],\n            [\n              -95.712890625,\n              34.23451236236987\n            ],\n            [\n              -94.52636718749999,\n              34.125447565116126\n            ],\n            [\n              -94.54833984375,\n              35.7286770448517\n            ],\n            [\n              -94.6142578125,\n              36.721273880045004\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"63","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bcf78e4b08c986b32e8f8","contributors":{"authors":[{"text":"Splinter, D. K.","contributorId":9083,"corporation":false,"usgs":false,"family":"Splinter","given":"D.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":451970,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dauwalter, Daniel C.","contributorId":224829,"corporation":false,"usgs":false,"family":"Dauwalter","given":"Daniel C.","affiliations":[{"id":37131,"text":"Trout Unlimited","active":true,"usgs":false}],"preferred":false,"id":451973,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Marston, R. A.","contributorId":52422,"corporation":false,"usgs":false,"family":"Marston","given":"R.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":451971,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fisher, William wfisher@usgs.gov","contributorId":206607,"corporation":false,"usgs":true,"family":"Fisher","given":"William","email":"wfisher@usgs.gov","affiliations":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"preferred":true,"id":451972,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034439,"text":"70034439 - 2011 - Microbial sulfate reduction and the sulfur budget for a complete section of altered oceanic basalts, IODP Hole 1256D (eastern Pacific)","interactions":[],"lastModifiedDate":"2013-04-30T15:30:37","indexId":"70034439","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1427,"text":"Earth and Planetary Science Letters","active":true,"publicationSubtype":{"id":10}},"title":"Microbial sulfate reduction and the sulfur budget for a complete section of altered oceanic basalts, IODP Hole 1256D (eastern Pacific)","docAbstract":"Sulfide mineralogy and the contents and isotope compositions of sulfur were analyzed in a complete oceanic volcanic section from IODP Hole 1256D in the eastern Pacific, in order to investigate the role of microbes and their effect on the sulfur budget in altered upper oceanic crust. Basalts in the 800m thick volcanic section are affected by a pervasive low-temperature background alteration and have mean sulfur contents of 530ppm, reflecting loss of sulfur relative to fresh glass through degassing during eruption and alteration by seawater. Alteration halos along fractures average 155ppm sulfur and are more oxidized, have high SO<sub>4</sub>/&Sigma;S ratios (0.43), and lost sulfur through oxidation by seawater compared to host rocks. Although sulfur was lost locally, sulfur was subsequently gained through fixation of seawater-derived sulfur in secondary pyrite and marcasite in veins and in concentrations at the boundary between alteration halos and host rocks. Negative &delta;34S<sub>sulfide-S</sub> values (down to -30 &deg;) and low temperatures of alteration (down to ~40 &deg;C) point to microbial reduction of seawater sulfate as the process resulting in local additions of sulfide-S. Mass balance calculations indicate that 15-20% of the sulfur in the volcanic section is microbially derived, with the bulk altered volcanic section containing 940ppm S, and with &delta;34S shifted to -6.0&permil;) from the mantle value (0 &permil;). The bulk volcanic section may have gained or lost sulfur overall. The annual flux of microbial sulfur into oceanic basement based on Hole 1256D is 3-4 X10<sup>10</sup>molSyr-1, within an order of magnitude of the riverine sulfate source and the sedimentary pyrite sink. Results indicate a flux of bacterially derived sulfur that is fixed in upper ocean basement of 7-8 X 10<sup>-8</sup>molcm<sup>-2</sup>yr<sup>-1</sup> over 15m.y. This is comparable to that in open ocean sediment sites, but is one to two orders of magnitude less than for ocean margin sediments. The global annual subduction of sulfur in altered oceanic basalt lavas based on Hole 1256D is 1.5-2.0 X 10<sup>11</sup>moly<sup>-1</sup>, comparable to the subduction of sulfide in sediments, and could contribute to sediment-like sulfur isotope heterogeneities in the mantle.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Earth and Planetary Science Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.epsl.2011.07.027","issn":"0012821X","usgsCitation":"Alt, J.C., and Shanks, W., 2011, Microbial sulfate reduction and the sulfur budget for a complete section of altered oceanic basalts, IODP Hole 1256D (eastern Pacific): Earth and Planetary Science Letters, v. 310, no. 1-2, p. 73-83, https://doi.org/10.1016/j.epsl.2011.07.027.","startPage":"73","endPage":"83","numberOfPages":"11","costCenters":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":244533,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216650,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.epsl.2011.07.027"}],"volume":"310","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a565fe4b0c8380cd6d552","contributors":{"authors":[{"text":"Alt, Jeffrey C.","contributorId":70213,"corporation":false,"usgs":true,"family":"Alt","given":"Jeffrey","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":445781,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shanks, Wayne C.","contributorId":79573,"corporation":false,"usgs":true,"family":"Shanks","given":"Wayne C.","affiliations":[],"preferred":false,"id":445782,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70034437,"text":"70034437 - 2011 - Parasite transmission in social interacting hosts: Monogenean epidemics in guppies","interactions":[],"lastModifiedDate":"2021-04-20T17:49:32.802097","indexId":"70034437","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2980,"text":"PLoS ONE","active":true,"publicationSubtype":{"id":10}},"title":"Parasite transmission in social interacting hosts: Monogenean epidemics in guppies","docAbstract":"<div id=\"section1\" class=\"section toc-section\"><h3>Background</h3><p>Infection incidence increases with the average number of contacts between susceptible and infected individuals. Contact rates are normally assumed to increase linearly with host density. However, social species seek out each other at low density and saturate their contact rates at high densities. Although predicting epidemic behaviour requires knowing how contact rates scale with host density, few empirical studies have investigated the effect of host density. Also, most theory assumes each host has an equal probability of transmitting parasites, even though individual parasite load and infection duration can vary. To our knowledge, the relative importance of characteristics of the primary infected host vs. the susceptible population has never been tested experimentally.</p></div><div id=\"section2\" class=\"section toc-section\"><a id=\"\" class=\"link-target\" title=\"Methodology/Principal Findings\" name=\"\"></a><h3>Methodology/Principal Findings</h3><p>Here, we examine epidemics using a common ectoparasite,<span>&nbsp;</span><i>Gyrodactylus turnbulli</i><span>&nbsp;</span>infecting its guppy host (<i>Poecilia reticulata</i>). Hosts were maintained at different densities (3, 6, 12 and 24 fish in 40 L aquaria), and we monitored gyrodactylids both at a population and individual host level. Although parasite population size increased with host density, the probability of an epidemic did not. Epidemics were more likely when the primary infected fish had a high mean intensity and duration of infection. Epidemics only occurred if the primary infected host experienced more than 23 worm days. Female guppies contracted infections sooner than males, probably because females have a higher propensity for shoaling.</p></div><div id=\"section3\" class=\"section toc-section\"><a id=\"\" class=\"link-target\" title=\"Conclusions/Significance\" name=\"\"></a><h3>Conclusions/Significance</h3><p>These findings suggest that in social hosts like guppies, the frequency of social contact largely governs disease epidemics independent of host density.</p></div>","language":"English","publisher":"PLOS","doi":"10.1371/journal.pone.0022634","issn":"19326203","usgsCitation":"Johnson, M., Lafferty, K.D., van, O.C., and Cable, J., 2011, Parasite transmission in social interacting hosts: Monogenean epidemics in guppies: PLoS ONE, v. 6, no. 8, e22634; 6 p., https://doi.org/10.1371/journal.pone.0022634.","productDescription":"e22634; 6 p.","costCenters":[],"links":[{"id":475340,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1371/journal.pone.0022634","text":"Publisher Index Page"},{"id":244503,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216622,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1371/journal.pone.0022634"}],"volume":"6","issue":"8","noUsgsAuthors":false,"publicationDate":"2011-08-29","publicationStatus":"PW","scienceBaseUri":"505a74dbe4b0c8380cd77882","contributors":{"authors":[{"text":"Johnson, M.B.","contributorId":70211,"corporation":false,"usgs":true,"family":"Johnson","given":"M.B.","email":"","affiliations":[],"preferred":false,"id":445778,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lafferty, K. D.","contributorId":58213,"corporation":false,"usgs":false,"family":"Lafferty","given":"K.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":445776,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"van, Oosterhout C.","contributorId":63240,"corporation":false,"usgs":true,"family":"van","given":"Oosterhout","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":445777,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cable, J.","contributorId":31229,"corporation":false,"usgs":true,"family":"Cable","given":"J.","email":"","affiliations":[],"preferred":false,"id":445775,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034415,"text":"70034415 - 2011 - Pressure waves in a supersaturated bubbly magma","interactions":[],"lastModifiedDate":"2013-09-13T10:18:54","indexId":"70034415","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1803,"text":"Geophysical Journal International","active":true,"publicationSubtype":{"id":10}},"title":"Pressure waves in a supersaturated bubbly magma","docAbstract":"We study the interaction of acoustic pressure waves with an expanding bubbly magma. The expansion of magma is the result of bubble growth during or following magma decompression and leads to two competing processes that affect pressure waves. On the one hand, growth in vesicularity leads to increased damping and decreased wave amplitudes, and on the other hand, a decrease in the effective bulk modulus of the bubbly mixture reduces wave velocity, which in turn, reduces damping and may lead to wave amplification. The additional acoustic energy originates from the chemical energy released during bubble growth. We examine this phenomenon analytically to identify conditions under which amplification of pressure waves is possible. These conditions are further examined numerically to shed light on the frequency and phase dependencies in relation to the interaction of waves and growing bubbles. Amplification is possible at low frequencies and when the growth rate of bubbles reaches an optimum value for which the wave velocity decreases sufficiently to overcome the increased damping of the vesicular material. We examine two amplification phase-dependent effects: (1) a tensile-phase effect in which the inserted wave adds to the process of bubble growth, utilizing the energy associated with the gas overpressure in the bubble and therefore converting a large proportion of this energy into additional acoustic energy, and (2) a compressive-phase effect in which the pressure wave works against the growing bubbles and a large amount of its acoustic energy is dissipated during the first cycle, but later enough energy is gained to amplify the second cycle. These two effects provide additional new possible mechanisms for the amplification phase seen in Long-Period (LP) and Very-Long-Period (VLP) seismic signals originating in magma-filled cracks.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Journal International","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Wiley","doi":"10.1111/j.1365-246X.2011.05152.x","issn":"0956540X","usgsCitation":"Kurzon, I., Lyakhovsky, V., Navon, O., and Chouet, B., 2011, Pressure waves in a supersaturated bubbly magma: Geophysical Journal International, v. 187, no. 1, p. 421-438, https://doi.org/10.1111/j.1365-246X.2011.05152.x.","productDescription":"18 p.","startPage":"421","endPage":"438","costCenters":[],"links":[{"id":475238,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1365-246x.2011.05152.x","text":"Publisher Index Page"},{"id":216742,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-246X.2011.05152.x"},{"id":244628,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"187","issue":"1","noUsgsAuthors":false,"publicationDate":"2011-08-16","publicationStatus":"PW","scienceBaseUri":"505a8b5ee4b0c8380cd7e222","contributors":{"authors":[{"text":"Kurzon, I.","contributorId":71798,"corporation":false,"usgs":true,"family":"Kurzon","given":"I.","email":"","affiliations":[],"preferred":false,"id":445670,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lyakhovsky, V.","contributorId":76492,"corporation":false,"usgs":true,"family":"Lyakhovsky","given":"V.","email":"","affiliations":[],"preferred":false,"id":445671,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Navon, O.","contributorId":63648,"corporation":false,"usgs":true,"family":"Navon","given":"O.","email":"","affiliations":[],"preferred":false,"id":445668,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Chouet, B.","contributorId":68465,"corporation":false,"usgs":true,"family":"Chouet","given":"B.","affiliations":[],"preferred":false,"id":445669,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034364,"text":"70034364 - 2011 - Uni-directional consumer-resource theory characterizing transitions of interaction outcomes","interactions":[],"lastModifiedDate":"2021-04-21T20:17:58.368105","indexId":"70034364","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1452,"text":"Ecological Complexity","active":true,"publicationSubtype":{"id":10}},"title":"Uni-directional consumer-resource theory characterizing transitions of interaction outcomes","docAbstract":"<p><span>A resource is considered here to be a biotic population that helps to maintain the population growth of its consumers, whereas a consumer utilizes a resource and in turn decreases its growth rate. Bi-directional consumer–resource (C–R) interactions have been the object of recent theory. In these interactions, each species acts, in some respects, as both a consumer and a resource of the other, which is the basis of many&nbsp;mutualisms. In uni-directional C–R interactions between two species, one acts as a consumer and the other as a material and/or energy resource, while neither acts as both. The relationship between insect pollinator/seed parasites and the&nbsp;host plant&nbsp;is an example of the latter interaction type of C–R, as the insect provides no material resource to the plant (though it provides a&nbsp;pollination&nbsp;service). In this paper we consider a different variation of the uni-directional C–R interaction, in which the resource species has both positive and negative effects on the consumer species, while the consumer has only a negative effect on the resource. A predator–prey system in which the prey is able to kill or consume predator eggs or larvae is an example. Our aim is to demonstrate mechanisms by which interaction outcomes of this system vary with different conditions, and thus to extend the uni-directional C–R theory established by&nbsp;</span>Holland and DeAngelis (2009)<span>. By the analysis of a specific two-species system, it is shown that there is no periodic solution of the system, and the parameter (factor) space can be divided into six regions, which correspond to predation/parasitism,&nbsp;amensalism, and competition. The interaction outcomes of the system transition smoothly when the parameters are changed continuously in the six regions and/or initial densities of the species vary in a smooth fashion. Varying a pair of parameters can also result in the transitions. The analysis leads to both conditions under which the species approach their maximal densities, and explanations for phenomena in experiments by&nbsp;</span>Urabe and Sterner (1996)<span>.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.ecocom.2011.04.002","issn":"1476945X","usgsCitation":"Wang, Y., DeAngelis, D., and Holland, J., 2011, Uni-directional consumer-resource theory characterizing transitions of interaction outcomes: Ecological Complexity, v. 8, no. 3, p. 249-257, https://doi.org/10.1016/j.ecocom.2011.04.002.","productDescription":"9 p.","startPage":"249","endPage":"257","costCenters":[],"links":[{"id":244820,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216919,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.ecocom.2011.04.002"}],"volume":"8","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbc7de4b08c986b328c65","contributors":{"authors":[{"text":"Wang, Y.","contributorId":64213,"corporation":false,"usgs":true,"family":"Wang","given":"Y.","affiliations":[],"preferred":false,"id":445424,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"DeAngelis, D.L. 0000-0002-1570-4057","orcid":"https://orcid.org/0000-0002-1570-4057","contributorId":32470,"corporation":false,"usgs":true,"family":"DeAngelis","given":"D.L.","affiliations":[],"preferred":false,"id":445423,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Holland, J.N.","contributorId":88976,"corporation":false,"usgs":true,"family":"Holland","given":"J.N.","email":"","affiliations":[],"preferred":false,"id":445425,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70034274,"text":"70034274 - 2011 - Arsenic associations in sediments from shallow aquifers of northwestern Hetao Basin, Inner Mongolia","interactions":[],"lastModifiedDate":"2012-03-12T17:21:51","indexId":"70034274","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1534,"text":"Environmental Earth Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Arsenic associations in sediments from shallow aquifers of northwestern Hetao Basin, Inner Mongolia","docAbstract":"Understanding the mechanism of arsenic mobilization from sediments to groundwater is important for water quality management in areas of endemic arsenic poisoning, such as the Hetao Basin in Inner Mongolia, northern China. Aquifer geochemistry was characterized at three field sites (SH, HF, TYS) in Hangjinhouqi County of northwestern Hetao Basin. The results of bulk geochemistry analysis of sediment samples indicated that total As concentrations have a range of 6. 8-58. 5 mg/kg, with a median of 14. 4 mg/kg. The highest As concentrations were found at 15-25 m depth. In the meanwhile, the range of As concentration in the sediments from background borehole is 3-21. 8 mg/kg, with a median value of 9 mg/kg. The As sediments concentrations with depth from the SH borehole were correlated with the contents of Fe, Sb, B, V, total C and total S. Generally, the abundance of elements varied with grain size, with higher concentrations in finer fractions of the sediments. Distinct lithology profile and different geochemical characteristics of aquifer sediments indicate the sediments are associated with different sources and diverse sedimentary environments. Up to one third of arsenic in the sediments could be extracted by ammonium oxalate, suggesting that Fe oxyhydroxides may be the major sink of As in the aquifer. Sequential extraction results indicate that arsenic occurs as strongly adsorbed on and/or co-precipitated with amorphous Fe oxyhydroxides in sediments accounting for 35 and 20%, respectively, of the total contents of arsenic. The release of As into groundwater may occur by desorption from the mineral surface driven by reductive dissolution of the Fe oxide minerals. Furthermore, small proportions of As associated with iron sulfides occur in the reductive sediments. ?? 2011 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Earth Sciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s12665-011-1020-1","issn":"18666280","usgsCitation":"Deng, Y., Wang, Y., Ma, T., Yang, H., and He, J., 2011, Arsenic associations in sediments from shallow aquifers of northwestern Hetao Basin, Inner Mongolia: Environmental Earth Sciences, v. 64, no. 8, p. 2001-2011, https://doi.org/10.1007/s12665-011-1020-1.","startPage":"2001","endPage":"2011","numberOfPages":"11","costCenters":[],"links":[{"id":216523,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s12665-011-1020-1"},{"id":244400,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"64","issue":"8","noUsgsAuthors":false,"publicationDate":"2011-03-26","publicationStatus":"PW","scienceBaseUri":"5059ed8ae4b0c8380cd4987f","contributors":{"authors":[{"text":"Deng, Y.","contributorId":57686,"corporation":false,"usgs":true,"family":"Deng","given":"Y.","email":"","affiliations":[],"preferred":false,"id":445030,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wang, Y.","contributorId":64213,"corporation":false,"usgs":true,"family":"Wang","given":"Y.","affiliations":[],"preferred":false,"id":445031,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ma, T.","contributorId":33870,"corporation":false,"usgs":true,"family":"Ma","given":"T.","email":"","affiliations":[],"preferred":false,"id":445028,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Yang, H.","contributorId":48385,"corporation":false,"usgs":true,"family":"Yang","given":"H.","email":"","affiliations":[],"preferred":false,"id":445029,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"He, J.","contributorId":95993,"corporation":false,"usgs":true,"family":"He","given":"J.","email":"","affiliations":[],"preferred":false,"id":445032,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
]}