{"pageNumber":"3139","pageRowStart":"78450","pageSize":"25","recordCount":184882,"records":[{"id":70022754,"text":"70022754 - 2001 - Processes of nickel and cobalt uptake by a manganese oxide forming sediment in Pinal Creek, Globe mining district, Arizona","interactions":[],"lastModifiedDate":"2018-12-03T08:57:28","indexId":"70022754","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Processes of nickel and cobalt uptake by a manganese oxide forming sediment in Pinal Creek, Globe mining district, Arizona","docAbstract":"A series of column experiments was conducted using manganese oxide coated sediments collected from the hyporheic zone in Pinal Creek (AZ), a metal-contaminated stream, to study the uptake and retention of Mn, Ni, and Co. Experimental variables included the absence (abiotic) and presence (biotic) of active Mn-oxidizing bacteria, the absence and presence of dissolved Mn, and sediment manganese oxide content. Uptake of Mn under biotic conditions was between 8 and 39% higher than under abiotic conditions. Continuous uptake of Mn due to biotic oxidation was evident from extraction of column sediments. Manganese uptake is hypothesized to initially occur as adsorption, which led to subsequent surface and/or microbial oxidation. Complete breakthrough of Ni within 100 pore volumes indicated no process of continuous uptake and was modeled as an equilibrium adsorption process. Nickel uptake in the presence of dissolved Mn was 67-100% reversible. Sediment extractions suggest that Ni uptake occurred through weak and strong adsorption. Continuous uptake of cobalt increased with sediment manganese oxide content, and Co uptake was up to 75% greater under biotic than abiotic conditions. Cobalt uptake was controlled by both existing and newly formed manganese oxides. Only a small amount of Co uptake was reversible (10-25%). XANES spectral analysis indicated that most Co(II) was oxidized to Co(III) and probably incorporated structurally into manganese oxides. Although manganese oxides were the primary phase controlling uptake and retention of Mn, Ni, and Co, the mechanisms varied among the metals.","language":"English","publisher":"ACS","doi":"10.1021/es010514d","issn":"0013936X","usgsCitation":"Kay, J., Conklin, M., Fuller, C.C., and O’Day, P.A., 2001, Processes of nickel and cobalt uptake by a manganese oxide forming sediment in Pinal Creek, Globe mining district, Arizona: Environmental Science & Technology, v. 35, no. 24, p. 4719-4725, https://doi.org/10.1021/es010514d.","productDescription":"7 p.","startPage":"4719","endPage":"4725","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":233349,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":208007,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es010514d"}],"country":"United States","state":"Arizona","otherGeospatial":"Pinal Creek","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -110.913,33.604 ], [ -110.913,33.615 ], [ -110.906,33.615 ], [ -110.906,33.604 ], [ -110.913,33.604 ] ] ] } } ] }","volume":"35","issue":"24","noUsgsAuthors":false,"publicationDate":"2001-11-03","publicationStatus":"PW","scienceBaseUri":"505a8dbae4b0c8380cd7edc0","contributors":{"authors":[{"text":"Kay, J.T.","contributorId":50327,"corporation":false,"usgs":true,"family":"Kay","given":"J.T.","email":"","affiliations":[],"preferred":false,"id":394784,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Conklin, M.H.","contributorId":82875,"corporation":false,"usgs":true,"family":"Conklin","given":"M.H.","email":"","affiliations":[],"preferred":false,"id":394785,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fuller, C. C.","contributorId":29858,"corporation":false,"usgs":true,"family":"Fuller","given":"C.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":394783,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"O’Day, P. A.","contributorId":26857,"corporation":false,"usgs":true,"family":"O’Day","given":"P.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":394782,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70022788,"text":"70022788 - 2001 - Dating Shuidonggou and the Upper Palaeolithic blade industry in North China","interactions":[],"lastModifiedDate":"2022-08-24T14:17:58.994894","indexId":"70022788","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":819,"text":"Antiquity","active":true,"publicationSubtype":{"id":10}},"title":"Dating Shuidonggou and the Upper Palaeolithic blade industry in North China","docAbstract":"<p><span>Shuidonggou is unique within the Chinese Palaeolithic sequence and its assemblage is reminiscent of Upper Palaeolithic core-and-blade technologies in Mongolia and southern Siberia. Limited chronological controls have prevented evaluation of this technology in both the Chinese and greater Eurasian Palaeolithic. Dating of recently discovered hearths at Locality 2 places Shuidonggou firmly at 29,000–24,000 BP, and suggests the spread of the Eurasian large blade technology was primarily from north to south. The concurrent production of small microblade-like bipolar bladelets at the site may also presage the development of a microlithic industry.</span></p>","language":"English","publisher":"Cambridge University Press","doi":"10.1017/S0003598X00089213","usgsCitation":"Madsen, D.B., Jingzen, L., Brantingham, P.J., Xing, G., Elston, R.G., and Bettinger, R.L., 2001, Dating Shuidonggou and the Upper Palaeolithic blade industry in North China: Antiquity, v. 75, no. 290, p. 706-716, https://doi.org/10.1017/S0003598X00089213.","productDescription":"11 p.","startPage":"706","endPage":"716","numberOfPages":"11","costCenters":[],"links":[{"id":233350,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"China","otherGeospatial":"Shuidonggou","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              105.029296875,\n              37.78808138412046\n            ],\n            [\n              107.24853515625,\n              37.78808138412046\n            ],\n            [\n              107.24853515625,\n              38.993572058209466\n            ],\n            [\n              105.029296875,\n              38.993572058209466\n            ],\n            [\n              105.029296875,\n              37.78808138412046\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"75","issue":"290","noUsgsAuthors":false,"publicationDate":"2015-01-02","publicationStatus":"PW","scienceBaseUri":"5059fddee4b0c8380cd4e99c","contributors":{"authors":[{"text":"Madsen, David B.","contributorId":191727,"corporation":false,"usgs":false,"family":"Madsen","given":"David","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":394912,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jingzen, L.","contributorId":32411,"corporation":false,"usgs":false,"family":"Jingzen","given":"L.","email":"","affiliations":[],"preferred":false,"id":394911,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brantingham, P. J.","contributorId":87307,"corporation":false,"usgs":false,"family":"Brantingham","given":"P.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":394914,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Xing, Gao","contributorId":295520,"corporation":false,"usgs":false,"family":"Xing","given":"Gao","email":"","affiliations":[],"preferred":false,"id":394913,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Elston, R. G.","contributorId":93212,"corporation":false,"usgs":false,"family":"Elston","given":"R.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":394915,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Bettinger, R. L.","contributorId":17776,"corporation":false,"usgs":false,"family":"Bettinger","given":"R.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":394910,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":1001745,"text":"1001745 - 2001 - Use of macroinvertebrates to identify cultivated wetlands in the Prairie Pothole Region","interactions":[],"lastModifiedDate":"2017-10-20T10:29:00","indexId":"1001745","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3750,"text":"Wetlands","onlineIssn":"1943-6246","printIssn":"0277-5212","active":true,"publicationSubtype":{"id":10}},"title":"Use of macroinvertebrates to identify cultivated wetlands in the Prairie Pothole Region","docAbstract":"<p><span>We evaluated the use of macroinvertebrates as a potential tool to identify dry and intensively farmed temporary and seasonal wetlands in the Prairie Pothole Region. The techniques we designed and evaluated used the dried remains of invertebrates or their egg banks in soils as indicators of wetlands. For both the dried remains of invertebrates and their egg banks, we weighted each taxon according to its affinity for wetlands or uplands. Our study clearly demonstrated that shells, exoskeletons, head capsules, eggs, and other remains of macroinvertebrates can be used to identify wetlands, even when they are dry, intensively farmed, and difficult to identify as wetlands using standard criteria (i.e., hydrology, hydrophytic vegetation, and hydric soils). Although both dried remains and egg banks identified wetlands, the combination was more useful, especially for identifying drained or filled wetlands. We also evaluated the use of coarse taxonomic groupings to stimulate use of the technique by nonspecialists and obtained satisfactory results in most situations.</span></p>","language":"English","publisher":"The Society of Wetland Scientists","doi":"10.1672/0277-5212(2001)021[0223:UOMTIC]2.0.CO;2","usgsCitation":"Euliss, N.H., Mushet, D.M., and Johnson, D.H., 2001, Use of macroinvertebrates to identify cultivated wetlands in the Prairie Pothole Region: Wetlands, v. 21, no. 2, p. 223-231, https://doi.org/10.1672/0277-5212(2001)021[0223:UOMTIC]2.0.CO;2.","productDescription":"9 p.","startPage":"223","endPage":"231","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":134002,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"21","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a17e4b07f02db60457d","contributors":{"authors":[{"text":"Euliss, Ned H. Jr. ceuliss@usgs.gov","contributorId":2916,"corporation":false,"usgs":true,"family":"Euliss","given":"Ned","suffix":"Jr.","email":"ceuliss@usgs.gov","middleInitial":"H.","affiliations":[],"preferred":false,"id":311650,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mushet, David M. 0000-0002-5910-2744 dmushet@usgs.gov","orcid":"https://orcid.org/0000-0002-5910-2744","contributorId":1299,"corporation":false,"usgs":true,"family":"Mushet","given":"David","email":"dmushet@usgs.gov","middleInitial":"M.","affiliations":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":311651,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Johnson, Douglas H. 0000-0002-7778-6641 douglas_h_johnson@usgs.gov","orcid":"https://orcid.org/0000-0002-7778-6641","contributorId":1387,"corporation":false,"usgs":true,"family":"Johnson","given":"Douglas","email":"douglas_h_johnson@usgs.gov","middleInitial":"H.","affiliations":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":311652,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":1001739,"text":"1001739 - 2001 - On the rarity of observations of food provisioning by male dickcissels","interactions":[],"lastModifiedDate":"2017-12-27T11:28:32","indexId":"1001739","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3111,"text":"Prairie Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"On the rarity of observations of food provisioning by male dickcissels","docAbstract":"<p><span>Males of polygynous bird species typically provide less parental care to their offspring than males of monogamous species (Ketterson and Nolan 1994). Generally, in polygynous species, a male forfeits some potential reproductive success if he shifts his reproductive effort from mating with multiple females to parental care (Trivers 1972, Gubemick et al. 1993, Schleicher et al. 1993). In the polygynous dickcissel (</span><i>Spiza americana</i><span>), singing and foraging activities constitute much of a male's time-activity budget (Schartz and Zimmerman 1971, Finck 1984). Although male dickcissels are attentive to their nests and mates (e.g., nest protection and vigilance) females incubate the eggs and feed the young (Gross 1921). Herein, we describe an account of a male dickcissel feeding brown-headed cowbird (</span><i>Molothrus ater</i><span>) young early in the breeding season, summarize and review previous reports of food provisioning by the male dickcissel, and discuss the rarity of this behavior in the dickcissel.</span></p>","language":"English","publisher":"Great Plains Natural Science Society","usgsCitation":"Igl, L., and Best, L.B., 2001, On the rarity of observations of food provisioning by male dickcissels: Prairie Naturalist, v. 33, no. 2, p. 111-118.","productDescription":"7 p.","startPage":"111","endPage":"118","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":130337,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":336873,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.sdstate.edu/2001-archive","text":"Volume 33 on Publisher's Website"}],"volume":"33","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4af3e4b07f02db691c2f","contributors":{"authors":[{"text":"Igl, L.D. 0000-0003-0530-7266","orcid":"https://orcid.org/0000-0003-0530-7266","contributorId":13568,"corporation":false,"usgs":true,"family":"Igl","given":"L.D.","affiliations":[],"preferred":false,"id":311639,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Best, Louis B.","contributorId":52525,"corporation":false,"usgs":true,"family":"Best","given":"Louis","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":311640,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":1001675,"text":"1001675 - 2001 - Area requirements of grassland birds: A regional perspective","interactions":[],"lastModifiedDate":"2017-12-27T13:30:25","indexId":"1001675","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3544,"text":"The Auk","onlineIssn":"1938-4254","printIssn":"0004-8038","active":true,"publicationSubtype":{"id":10}},"title":"Area requirements of grassland birds: A regional perspective","docAbstract":"<p><span>Area requirements of grassland birds have not been studied except in tallgrass prairie. We studied the relation between both species-occurrence and density and patch size by conducting 699 fixed-radius point counts of 15 bird species on 303 restored grassland areas in nine counties in four northern Great Plains states. Northern Harrier (</span><i>Circus cyaneus</i><span>), Sedge Wren (</span><i>Cistothorus platensis</i><span>), Clay-colored Sparrow (</span><i>Spizella pallida</i><span>), Grasshopper Sparrow (</span><i>Ammodramus savannarum</i><span>), Baird's Sparrow (</span><i>Ammodramus bairdii</i><span>), Le Conte's Sparrow (</span><i>Ammodramus leconteii</i><span>), and Bobolink (</span><i>Dolichonyx oryzivorus</i><span>) were shown to favor larger grassland patches in one or more counties. Evidence of area sensitivity was weak or ambivalent for Eastern Kingbird (</span><i>Tyrannus tyrannus</i><span>), Common Yellowthroat (</span><i>Geothlypis trichas</i><span>), Savannah Sparrow (</span><i>Passerculus sandwichensis</i><span>), and Western Meadowlark (</span><i>Sturnella neglecta</i><span>). Red-winged Blackbirds (</span><i>Agelaius phoeniceus</i><span>) preferred larger patches in some counties, and smaller patches in others. Mourning Doves (</span><i>Zenaida macroura</i><span>) and Brown- headed Cowbirds (</span><i>Molothrus ater</i><span>) tended to favor smaller grassland patches. Three species showed greater area sensitivity in counties where each species was more common. Five species demonstrated some spatial pattern of area sensitivity, either north to south or east to west. This study demonstrates the importance of replication in space; results from one area may not apply to others because of differences in study design, analytical methods, location relative to range of the species, and surrounding landscapes.</span></p>","language":"English","publisher":"American Ornithological Society","doi":"10.1642/0004-8038(2001)118[0024:AROGBA]2.0.CO;2","usgsCitation":"Johnson, D.H., and Igl, L.D., 2001, Area requirements of grassland birds: A regional perspective: The Auk, v. 118, no. 1, p. 24-34, https://doi.org/10.1642/0004-8038(2001)118[0024:AROGBA]2.0.CO;2.","productDescription":"11 p.","startPage":"24","endPage":"34","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":478967,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1642/0004-8038(2001)118[0024:arogba]2.0.co;2","text":"Publisher Index Page"},{"id":133943,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"118","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac5e4b07f02db679cbc","contributors":{"authors":[{"text":"Johnson, Douglas H. 0000-0002-7778-6641 douglas_h_johnson@usgs.gov","orcid":"https://orcid.org/0000-0002-7778-6641","contributorId":1387,"corporation":false,"usgs":true,"family":"Johnson","given":"Douglas","email":"douglas_h_johnson@usgs.gov","middleInitial":"H.","affiliations":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":311497,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Igl, Lawrence D. 0000-0003-0530-7266 ligl@usgs.gov","orcid":"https://orcid.org/0000-0003-0530-7266","contributorId":2381,"corporation":false,"usgs":true,"family":"Igl","given":"Lawrence","email":"ligl@usgs.gov","middleInitial":"D.","affiliations":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":311496,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70023088,"text":"70023088 - 2001 - Further biogeochemical characterization of a trichloroethene-contaminated fractured dolomite aquifer: Electron source and microbial communities involved in reductive dechlorination","interactions":[],"lastModifiedDate":"2012-03-12T17:20:08","indexId":"70023088","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Further biogeochemical characterization of a trichloroethene-contaminated fractured dolomite aquifer: Electron source and microbial communities involved in reductive dechlorination","docAbstract":"A recent article presented geochemical and microbial evidence establishing metabolic adaptation to and in-situ reductive dechlorination of trichloroethene (TCE) in a fractured dolomite aquifer. This study was designed to further explore site conditions and microbial populations and to explain previously reported enhancement of reductive dechlorination by the addition of pulverized dolomite to laboratory microcosms. A survey of groundwater geochemical parameters (chlorinated ethenes, ethene, H2, CH4, DIC, DOC, and ??13C values for CH4, DIC, and DOC) indicated that in situ reductive dechlorination was ongoing and that an unidentified pool of organic carbon was contributing, likely via microbial respiration, to the large and relatively light onsite DIC pool. Petroleum hydrocarbons associated with the dolomite rock were analyzed by GC/MS and featured a characteristically low ??13C value. Straight chain hydrocarbons were extracted from the dolomite previously found to stimulate reductive dechlorination; these were particularly depleted in hexadecane (HD). Thus, we hypothesized that HD and related hydrocarbons might be anaerobically respired and serve both as the source of onsite DIC and support reductive dechlorination of TCE. Microcosms amended with pulverized dolomite demonstrated reductive dechlorination, whereas a combusted dolomite amendment did not. HD-amended microcosms were also inactive. Therefore, the stimulatory factor in the pulverized dolomite was heat labile, but that component was not HD. Amplified Ribosomal DNA Restriction Analysis (ARDRA) of the microbial populations in well waters indicated that a relatively low diversity, sulfur-transforming community outside the plume was shifted toward a high diversity community including Dehalococcoides ethenogenes-type microorganisms inside the zone of contamination. These observations illustrate biogeochemical intricacies of in situ reductive dechlorination reactions.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Science and Technology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1021/es0110067","issn":"0013936X","usgsCitation":"Hohnstock-Ashe, A.M., Plummer, S., Yager, R.M., Baveye, P., and Madsen, E., 2001, Further biogeochemical characterization of a trichloroethene-contaminated fractured dolomite aquifer: Electron source and microbial communities involved in reductive dechlorination: Environmental Science & Technology, v. 35, no. 22, p. 4449-4456, https://doi.org/10.1021/es0110067.","startPage":"4449","endPage":"4456","numberOfPages":"8","costCenters":[],"links":[{"id":233403,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":208037,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es0110067"}],"volume":"35","issue":"22","noUsgsAuthors":false,"publicationDate":"2001-10-06","publicationStatus":"PW","scienceBaseUri":"505a1420e4b0c8380cd54907","contributors":{"authors":[{"text":"Hohnstock-Ashe, A. M.","contributorId":106392,"corporation":false,"usgs":true,"family":"Hohnstock-Ashe","given":"A.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":396094,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Plummer, S.M.","contributorId":44054,"corporation":false,"usgs":true,"family":"Plummer","given":"S.M.","email":"","affiliations":[],"preferred":false,"id":396091,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Yager, R. M.","contributorId":8069,"corporation":false,"usgs":true,"family":"Yager","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":396090,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Baveye, P.","contributorId":94873,"corporation":false,"usgs":true,"family":"Baveye","given":"P.","email":"","affiliations":[],"preferred":false,"id":396093,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Madsen, E.L.","contributorId":47923,"corporation":false,"usgs":true,"family":"Madsen","given":"E.L.","email":"","affiliations":[],"preferred":false,"id":396092,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70022752,"text":"70022752 - 2001 - Ten years after the crime: Lasting effects of damage from a cruise ship anchor on a coral reef in St. John, U.S. Virgin Islands","interactions":[],"lastModifiedDate":"2015-12-21T11:38:55","indexId":"70022752","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1106,"text":"Bulletin of Marine Science","active":true,"publicationSubtype":{"id":10}},"title":"Ten years after the crime: Lasting effects of damage from a cruise ship anchor on a coral reef in St. John, U.S. Virgin Islands","docAbstract":"<p>In October 1988, a cruise ship dropped its anchor on a coral reef in Virgin Islands National Park, St. John, creating a distinct scar roughly 128 m long and 3 m wide from a depth of 22 m to a depth of 6 m. The anchor pulverized coral colonies and smashed part of the reef framework. In April 1991, nine permanent quadrats (1 m2) were established inside the scar over a depth range of 9 m to 12.5 m. At that time, average coral cover inside the scar was less than 1%. These quadrats were surveyed again in 1992, 1993, 1994, 1995 and 1998. Recruits of 19 coral species have been observed, with Agaricia agaricites and Porites spp. the most abundant. Quadrats surveyed outside the scar in June 1994 over the same depth range had a higher percent coral cover (mean = 7.4%, SD = 4.5) and greater average size (maximum length) of coral colonies than in quadrats inside the damaged area. Although coral recruits settle into the scar in high densities, live coral cover has not increased significantly in the last 10 yrs, reflecting poor survival and growth of newly settled corals. The relatively planar aspect of the scar may increase the vulnerability of the recruits to abrasion and mortality from shifting sediments. Ten years after the anchor damage occurred, live coral cover in the still-visible scar (mean = 2.6%, SD = 2.7) remains well below the cover found in the adjacent, undamaged reef.</p>","language":"English","issn":"00074977","usgsCitation":"Rogers, C., and Garrison, V., 2001, Ten years after the crime: Lasting effects of damage from a cruise ship anchor on a coral reef in St. John, U.S. Virgin Islands: Bulletin of Marine Science, v. 69, no. 2, p. 793-803.","productDescription":"11 p.","startPage":"793","endPage":"803","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":233888,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"69","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba538e4b08c986b3208cc","contributors":{"authors":[{"text":"Rogers, C.S. 0000-0001-9056-6961","orcid":"https://orcid.org/0000-0001-9056-6961","contributorId":37274,"corporation":false,"usgs":true,"family":"Rogers","given":"C.S.","affiliations":[],"preferred":false,"id":394779,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Garrison, V.H.","contributorId":70731,"corporation":false,"usgs":true,"family":"Garrison","given":"V.H.","email":"","affiliations":[],"preferred":false,"id":394780,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70022751,"text":"70022751 - 2001 - Cyclodiene insecticide, DDE, DDT, arsenic, and mercury contamination of big brown bats (Eptesicus fuscus) foraging at a Colorado Superfund site","interactions":[],"lastModifiedDate":"2017-11-27T17:03:27","indexId":"70022751","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":887,"text":"Archives of Environmental Contamination and Toxicology","active":true,"publicationSubtype":{"id":10}},"title":"Cyclodiene insecticide, DDE, DDT, arsenic, and mercury contamination of big brown bats (Eptesicus fuscus) foraging at a Colorado Superfund site","docAbstract":"<p><span>Rocky Mountain Arsenal (RMA) National Wildlife Area, near Denver, Colorado, is a Superfund site contaminated by past military and industrial uses, including pesticide manufacturing. From an ecosystem standpoint, the most critical contaminants at RMA are certain cyclodiene insecticides and metabolites,&nbsp;</span><i class=\"EmphasisTypeItalic \">p,p</i><span>′-DDE,<span>&nbsp;</span></span><i class=\"EmphasisTypeItalic \">p,p</i><span>′-DDT, arsenic, and mercury. Bats are important ecosystem components that can be impacted by persistent contaminants because of their position in the food chain and their potential longevity and thus duration of exposure. Big brown bats (</span><i class=\"EmphasisTypeItalic \">Eptesicus fuscus</i><span>) were captured<span>&nbsp;</span></span><i class=\"EmphasisTypeItalic \">(n = 51)</i><span><span>&nbsp;</span>while foraging at RMA in the summers of 1997 and 1998 for determination of concentrations of contaminants of concern in carcasses, brains, and stomach contents. Adult females<span>&nbsp;</span></span><i class=\"EmphasisTypeItalic \">(n = 15)</i><span><span>&nbsp;</span>were also tracked by radiotelemetry to determine locations of nearest maternity roosts for sampling of guano for contaminant analysis and inspection for potential contaminant-induced mortality. Bats captured while foraging at RMA had measurable quantities of dieldrin and DDE in masticated insect samples from stomach contents and significantly higher concentrations of dieldrin, DDE, DDT, and mercury (juveniles) in carcasses than big brown bats<span>&nbsp;</span></span><i class=\"EmphasisTypeItalic \">(n = 26)</i><span><span>&nbsp;</span>sampled at a reference area 80 km to the north. Concentrations of dieldrin and DDE in brains of bats captured while foraging at RMA were also greater than in bats from the reference area, but not high enough to suggest mortality. Maximum concentrations of DDE, DDT, and cyclodienes in brains of big brown bats were found in adult males from RMA. Guano from the two closest known roosts had significantly higher concentrations of dieldrin, DDE, and mercury than guano from two roosts at the reference area. Dieldrin concentrations in carcasses of bats from RMA were highest in juveniles, followed by adult males and adult females. DDE concentrations in carcasses were lowest in adult females at both sites and highest in adult males at RMA. No contaminant-related mortality was obvious at the small maternity colonies near RMA. Big brown bats show higher contamination than most other mammals previously sampled at this site. Concentrations and proportions of samples with detectable residues of dieldrin in carcasses of big brown bats from RMA were similar to or exceeded reports for this species from elsewhere in the United States some 25 years ago, prior to or just following restrictions on use of this compound.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s002440010153","issn":"00904341","usgsCitation":"O'Shea, T., Everette, A., and Ellison, L., 2001, Cyclodiene insecticide, DDE, DDT, arsenic, and mercury contamination of big brown bats (Eptesicus fuscus) foraging at a Colorado Superfund site: Archives of Environmental Contamination and Toxicology, v. 40, no. 1, p. 112-120, https://doi.org/10.1007/s002440010153.","productDescription":"9 p.","startPage":"112","endPage":"120","numberOfPages":"9","costCenters":[],"links":[{"id":208260,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s002440010153"},{"id":233887,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"40","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fd27e4b0c8380cd4e679","contributors":{"authors":[{"text":"O'Shea, T. J. 0000-0002-0758-9730","orcid":"https://orcid.org/0000-0002-0758-9730","contributorId":50100,"corporation":false,"usgs":true,"family":"O'Shea","given":"T. J.","affiliations":[],"preferred":false,"id":394777,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Everette, A. L. 0000-0003-2539-9129","orcid":"https://orcid.org/0000-0003-2539-9129","contributorId":31718,"corporation":false,"usgs":true,"family":"Everette","given":"A. L.","affiliations":[],"preferred":false,"id":394776,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ellison, L.E.","contributorId":103610,"corporation":false,"usgs":true,"family":"Ellison","given":"L.E.","email":"","affiliations":[],"preferred":false,"id":394778,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70022750,"text":"70022750 - 2001 - Detection of buried targets using a new enhanced very early time electromagnetic (VETEM) prototype system","interactions":[],"lastModifiedDate":"2012-03-12T17:20:37","indexId":"70022750","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1944,"text":"IEEE Transactions on Geoscience and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Detection of buried targets using a new enhanced very early time electromagnetic (VETEM) prototype system","docAbstract":"In this paper, numerical simulations of a new enhanced very early time electromagnetic (VETEM) prototype system are presented, where a horizontal transmitting loop and two horizontal receiving loops are used to detect buried targets, in which three loops share the same axis and the transmitter is located at the center of receivers. In the new VETEM system, the difference of signals from two receivers is taken to eliminate strong direct-signals from the transmitter and background clutter and furthermore to obtain a better SNR for buried targets. Because strong coupling exists between the transmitter and receivers, accurate analysis of the three-loop antenna system is required, for which a loop-tree basis function method has been utilized to overcome the low-frequency breakdown problem. In the analysis of scattering problem from buried targets, a conjugate gradient (CG) method with fast Fourier transform (FFT) is applied to solve the electric field integral equation. However, the convergence of such CG-FFT algorithm is extremely slow at very low frequencies. In order to increase the convergence rate, a frequency-hopping approach has been used. Finally, the primary, coupling, reflected, and scattered magnetic fields are evaluated at receiving loops to calculate the output electric current. Numerous simulation results are given to interpret the new VETEM system. Comparing with other single-transmitter-receiver systems, the new VETEM has better SNR and ability to reduce the clutter.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"IEEE Transactions on Geoscience and Remote Sensing","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1109/36.975004","issn":"01962892","usgsCitation":"Cui, T., Chew, W., Aydiner, A., Wright, D., and Smith, D., 2001, Detection of buried targets using a new enhanced very early time electromagnetic (VETEM) prototype system: IEEE Transactions on Geoscience and Remote Sensing, v. 39, no. 12, p. 2702-2712, https://doi.org/10.1109/36.975004.","startPage":"2702","endPage":"2712","numberOfPages":"11","costCenters":[],"links":[{"id":233856,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":208244,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1109/36.975004"}],"volume":"39","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ff71e4b0c8380cd4f1b8","contributors":{"authors":[{"text":"Cui, T.J.","contributorId":72552,"corporation":false,"usgs":true,"family":"Cui","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":394773,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chew, W.C.","contributorId":19730,"corporation":false,"usgs":true,"family":"Chew","given":"W.C.","email":"","affiliations":[],"preferred":false,"id":394771,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Aydiner, A.A.","contributorId":76088,"corporation":false,"usgs":true,"family":"Aydiner","given":"A.A.","affiliations":[],"preferred":false,"id":394774,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wright, D.L.","contributorId":88758,"corporation":false,"usgs":true,"family":"Wright","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":394775,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Smith, D.V.","contributorId":31143,"corporation":false,"usgs":true,"family":"Smith","given":"D.V.","email":"","affiliations":[],"preferred":false,"id":394772,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70022775,"text":"70022775 - 2001 - TES mapping of Mars' north seasonal cap","interactions":[],"lastModifiedDate":"2019-02-22T09:51:56","indexId":"70022775","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1963,"text":"Icarus","active":true,"publicationSubtype":{"id":10}},"title":"TES mapping of Mars' north seasonal cap","docAbstract":"<p><span>The&nbsp;</span><i>Mars Global Surveyor</i><span>&nbsp;thermal emission spectrometer has made observations of Mars' north polar region for nearly a full martian year. Measurements of bolometric emission and reflectance, as well as brightness temperatures in specific bands synthesized from thermal radiance spectra, are used to track the behavior of surface and atmospheric temperatures, the distribution of condensed CO</span><sub>2</sub><span>&nbsp;and H</span><sub>2</sub><span>O, and the occurrence of dust storms. CO</span><sub>2</sub><span>&nbsp;grain size in the polar night is variable in space and time, and is influenced by atmospheric conditions. Some specific locations display concentration of H</span><sub>2</sub><span>O frost and indicate the presence of long-term water-ice near the surface. Annual budgets of solid CO</span><sub>2</sub><span>&nbsp;range up to 1500 kg m</span><sup>−2</sup><span>; preliminary analysis suggests significant transport of energy into latitudes near 70°N during the polar night.</span></p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Icarus","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier Science","doi":"10.1006/icar.2001.6670","issn":"00191035","usgsCitation":"Kieffer, H.H., and Titus, T.N., 2001, TES mapping of Mars' north seasonal cap: Icarus, v. 154, no. 1, p. 162-180, https://doi.org/10.1006/icar.2001.6670.","productDescription":"19 p.","startPage":"162","endPage":"180","numberOfPages":"19","costCenters":[{"id":130,"text":"Astrogeology Research Center","active":false,"usgs":true}],"links":[{"id":233679,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Mars","volume":"154","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba37fe4b08c986b31fd17","contributors":{"authors":[{"text":"Kieffer, Hugh H.","contributorId":41137,"corporation":false,"usgs":false,"family":"Kieffer","given":"Hugh","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":394861,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Titus, Timothy N. 0000-0003-0700-4875 ttitus@usgs.gov","orcid":"https://orcid.org/0000-0003-0700-4875","contributorId":146,"corporation":false,"usgs":true,"family":"Titus","given":"Timothy","email":"ttitus@usgs.gov","middleInitial":"N.","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":true,"id":394862,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":1001868,"text":"1001868 - 2001 - Demographic response of black bears at Cold Lake, Alberta, to the removal of adult males","interactions":[],"lastModifiedDate":"2018-01-05T10:50:02","indexId":"1001868","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3671,"text":"Ursus","active":true,"publicationSubtype":{"id":10}},"title":"Demographic response of black bears at Cold Lake, Alberta, to the removal of adult males","docAbstract":"<p>Previous reports described an increase in population density following the removal of 23 adult male black bears (Ursus americanus) from a 218-km2 study area near Cold Lake, Alberta (the CLSA). This finding plays a central role in continuing debates over population regulation in bears, but has recently been criticized because density estimates were based on assumptions that were not met. Moreover, subsequent discussion has been predicated on conjecture that human exploitation had minimal influence on population dynamics. Our reanalysis supports previous descriptions of trends in bear density at Cold Lake. However, survival records revealed heavier exploitation than previously suspected. An underlying assumption of previous interpretationsCthat the Cold Lake bear population was naturally regulated near carrying capacityCno longer seems reasonable. Adult males deterred bears in other sex-age groups from using the CLSA; however, we found no evidence that birth or death rates were affected. The observed increase in local density should not be construed as a density-dependent response. Abrupt changes in local density might not have occurred if males had been removed from a larger area encompassing the CLSA.</p>","language":"English","publisher":"International Association for Bear Research and Management","usgsCitation":"Sargeant, G.A., and Ruff, R.L., 2001, Demographic response of black bears at Cold Lake, Alberta, to the removal of adult males: Ursus, v. 12, p. 59-68.","productDescription":"10 p.","startPage":"59","endPage":"68","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":133981,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":11103,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.bearbiology.com/index.php?id=ursvol12"}],"volume":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ab2e4b07f02db66ed30","contributors":{"authors":[{"text":"Sargeant, Glen A. 0000-0003-3845-8503 gsargeant@usgs.gov","orcid":"https://orcid.org/0000-0003-3845-8503","contributorId":1301,"corporation":false,"usgs":true,"family":"Sargeant","given":"Glen","email":"gsargeant@usgs.gov","middleInitial":"A.","affiliations":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":311989,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ruff, Robert L.","contributorId":174747,"corporation":false,"usgs":false,"family":"Ruff","given":"Robert","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":311990,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70022791,"text":"70022791 - 2001 - Consumption of tropospheric levels of methyl bromide by C1 compound-utilizing bacteria and comparison to saturation kinetics","interactions":[],"lastModifiedDate":"2020-01-05T14:59:18","indexId":"70022791","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":850,"text":"Applied and Environmental Microbiology","active":true,"publicationSubtype":{"id":10}},"title":"Consumption of tropospheric levels of methyl bromide by C1 compound-utilizing bacteria and comparison to saturation kinetics","docAbstract":"<div id=\"abstract-1\" class=\"section abstract\" data-gtm-vis-first-on-screen-6041348_20=\"1964\" data-gtm-vis-total-visible-time-6041348_20=\"100\" data-gtm-vis-has-fired-6041348_20=\"1\"><p id=\"p-2\">Pure cultures of methylotrophs and methanotrophs are known to oxidize methyl bromide (MeBr); however, their ability to oxidize tropospheric concentrations (parts per trillion by volume [pptv]) has not been tested. Methylotrophs and methanotrophs were able to consume MeBr provided at levels that mimicked the tropospheric mixing ratio of MeBr (12 pptv) at equilibrium with surface waters (≈2 pM). Kinetic investigations using picomolar concentrations of MeBr in a continuously stirred tank reactor (CSTR) were performed using strain IMB-1 and<i>Leisingeria methylohalidivorans</i><span>&nbsp;</span>strain MB2<sup>T</sup>— terrestrial and marine methylotrophs capable of halorespiration. First-order uptake of MeBr with no indication of threshold was observed for both strains. Strain MB2<sup>T</sup><span>&nbsp;</span>displayed saturation kinetics in batch experiments using micromolar MeBr concentrations, with an apparent<span>&nbsp;</span><i>K</i><span>&nbsp;</span><sub><i>s</i></sub><span>&nbsp;</span>of 2.4 μM MeBr and a<i>V</i><span>&nbsp;</span><sub>max</sub><span>&nbsp;</span>of 1.6 nmol h<sup>−1</sup>(10<sup>6</sup><span>&nbsp;</span>cells)<sup>−1</sup>. Apparent first-order degradation rate constants measured with the CSTR were consistent with kinetic parameters determined in batch experiments, which used 35- to 1 × 10<sup>7</sup>-fold-higher MeBr concentrations.<span>&nbsp;</span><i>Ruegeria algicola</i><span>&nbsp;</span>(a phylogenetic relative of strain MB2<sup>T</sup>), the common heterotrophs<span>&nbsp;</span><i>Escherichia coli</i><span>&nbsp;</span>and<i>Bacillus pumilus</i>, and a toluene oxidizer,<i>Pseudomonas mendocina</i><span>&nbsp;</span>KR1, were also tested. These bacteria showed no significant consumption of 12 pptv MeBr; thus, the ability to consume ambient mixing ratios of MeBr was limited to C<sub>1</sub><span>&nbsp;</span>compound-oxidizing bacteria in this study. Aerobic C<sub>1</sub><span>&nbsp;</span>bacteria may provide model organisms for the biological oxidation of tropospheric MeBr in soils and waters.</p></div>","language":"English","publisher":"ASM","doi":"10.1128/AEM.67.12.5437-5443.2001","issn":"00992240","usgsCitation":"Goodwin, K., Varner, R., Crill, P., and Oremland, R.S., 2001, Consumption of tropospheric levels of methyl bromide by C1 compound-utilizing bacteria and comparison to saturation kinetics: Applied and Environmental Microbiology, v. 67, no. 12, p. 5437-5443, https://doi.org/10.1128/AEM.67.12.5437-5443.2001.","productDescription":"7 p.","startPage":"5437","endPage":"5443","numberOfPages":"7","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":478859,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://www.ncbi.nlm.nih.gov/pmc/articles/93327","text":"External Repository"},{"id":233385,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"67","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fa25e4b0c8380cd4d95e","contributors":{"authors":[{"text":"Goodwin, K.D.","contributorId":45472,"corporation":false,"usgs":true,"family":"Goodwin","given":"K.D.","email":"","affiliations":[],"preferred":false,"id":394925,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Varner, R.K.","contributorId":92837,"corporation":false,"usgs":true,"family":"Varner","given":"R.K.","email":"","affiliations":[],"preferred":false,"id":394926,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Crill, P.M.","contributorId":42723,"corporation":false,"usgs":true,"family":"Crill","given":"P.M.","email":"","affiliations":[],"preferred":false,"id":394924,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Oremland, Ronald S. 0000-0001-7382-0147 roremlan@usgs.gov","orcid":"https://orcid.org/0000-0001-7382-0147","contributorId":931,"corporation":false,"usgs":true,"family":"Oremland","given":"Ronald","email":"roremlan@usgs.gov","middleInitial":"S.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":778889,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70022749,"text":"70022749 - 2001 - Freshwater fishes of Acadia National Park, Mount Desert Island, Maine","interactions":[],"lastModifiedDate":"2012-03-12T17:20:37","indexId":"70022749","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2898,"text":"Northeastern Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"Freshwater fishes of Acadia National Park, Mount Desert Island, Maine","docAbstract":"A list of freshwater fishes is presented for Acadia National Park, Mount Desert Island, Maine, based on past survey records, published and unpublished reports, and recent comprehensive surveys within or bordering Park boundaries conducted in 1998 and 1999. Overall, 31 species of fishes have been recorded in freshwaters of the Park or those bordering Park boundaries; 28 of these are still present. Of those, 15 species are likely native to Mount Desert Island, and the indigenous status of one fish species is unknown. The most widely distributed species in lakes and ponds is the golden shiner, Notemigonus crysoleucas Mitchill (83% of ponds), while the most widely-distributed species in brooks is the brook trout, Salvelinus fontinalis Mitchill (56%).","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Northeastern Naturalist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"10926194","usgsCitation":"Stone, J., Le, B., and Moring, J., 2001, Freshwater fishes of Acadia National Park, Mount Desert Island, Maine: Northeastern Naturalist, v. 8, no. 3, p. 311-318.","startPage":"311","endPage":"318","numberOfPages":"8","costCenters":[],"links":[{"id":233855,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"8","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a13e0e4b0c8380cd547fa","contributors":{"authors":[{"text":"Stone, J.","contributorId":91210,"corporation":false,"usgs":true,"family":"Stone","given":"J.","affiliations":[],"preferred":false,"id":394769,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Le, B.C.","contributorId":96456,"corporation":false,"usgs":true,"family":"Le","given":"B.C.","email":"","affiliations":[],"preferred":false,"id":394770,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Moring, J.R.","contributorId":29587,"corporation":false,"usgs":true,"family":"Moring","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":394768,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":1001758,"text":"1001758 - 2001 - Habitat fragmentation effects on birds in grasslands: A critique of our knowledge","interactions":[],"lastModifiedDate":"2017-12-27T13:19:14","indexId":"1001758","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1859,"text":"Great Plains Research","active":true,"publicationSubtype":{"id":10}},"title":"Habitat fragmentation effects on birds in grasslands: A critique of our knowledge","docAbstract":"Habitat fragmentation exacerbates problems due to habitat loss for grassland and wetland birds. Remaining patches of grassland and wetland may be too small, too isolated, and too influenced by edge effects to maintain viable populations of some breeding birds. Knowledge of the effects of fragmentation on bird populations is critically important for decisions about reserve design, grassland and wetland management, and implementation of cropland set-aside programs that benefit wildlife. In this article I review research that has been conducted on habitat fragmentation, and note common problems in the methodology used. The results of many studies are compromised by use of methods that are now recognized as inappropriate. As expected, some large-bodied birds with large territorial requirements, such as the northern harrier are area-sensitive. In addition, multiple studies have shown that some small species of grassland birds favor patches of habitat far in excess of their territory size. Among these species are the Savannah, grasshopper, and Henslow's sparrows and the bobolink. Single studies or studies that employed less-reliable methods have suggested other species may be area-sensitive as well. The literature on area-sensitivity among wetland birds includes virtually no studies based on solid methodologies. Distinguishing supportable conclusions from those that may be artefactual is important when practical decisions are made.","language":"English","publisher":"University of Nebraska Press","usgsCitation":"Johnson, D.H., 2001, Habitat fragmentation effects on birds in grasslands: A critique of our knowledge: Great Plains Research, v. 11, p. 211-231.","productDescription":"21 p.","startPage":"211","endPage":"231","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":134013,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":328547,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://digitalcommons.unl.edu/greatplainsresearch/568/"}],"volume":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a80e4b07f02db649419","contributors":{"authors":[{"text":"Johnson, Douglas H. 0000-0002-7778-6641 douglas_h_johnson@usgs.gov","orcid":"https://orcid.org/0000-0002-7778-6641","contributorId":1387,"corporation":false,"usgs":true,"family":"Johnson","given":"Douglas","email":"douglas_h_johnson@usgs.gov","middleInitial":"H.","affiliations":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":512575,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70022740,"text":"70022740 - 2001 - Constraining controls on carbonate sequences with high-resolution chronostratigraphy: Upper Miocene, Cabo de Gata region, SE Spain","interactions":[],"lastModifiedDate":"2012-03-12T17:20:39","indexId":"70022740","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2996,"text":"Palaeogeography, Palaeoclimatology, Palaeoecology","printIssn":"0031-0182","active":true,"publicationSubtype":{"id":10}},"title":"Constraining controls on carbonate sequences with high-resolution chronostratigraphy: Upper Miocene, Cabo de Gata region, SE Spain","docAbstract":"A high-resolution chronostratigraphy has been developed for Miocene shallow-water carbonate strata in the Cabo de Gata region of SE Spain for evaluation of local, regional and global factors that controlled platform architecture prior to and during the Messinian salinity crisis. Paleomagnetic data were collected from strata at three localities. Mean natural remanent magnetization (NRM) ranges between 1.53 ?? 10-8 and 5.2 ?? 10-3 Am2/kg. Incremental thermal and alternating field demagnetization isolated the characteristic remanent magnetization (ChRM). Rock magnetic studies show that the dominant magnetic mineral is magnetite, but mixtures of magnetite and hematite occur. A composite chronostratigraphy was derived from five stratigraphic sections. Regional stratigraphic data, biostratigraphic data, and an 40Ar/39Ar date of 8.5 ?? 0.1 Ma, for an interbedded volcanic flow, place the strata in geomagnetic polarity Chrons C4r to C3r. Sequence-stratigraphic and diagenetic evidence indicate a major unconformity at the base of depositional sequence (DS)3 that contains a prograding reef complex, suggesting that approximately 250 000 yr of record (Subchrons C3Br.2r to 3Br.1r) are missing near the Messinian-Tortonian boundary. Correlation to the GPTS shows that the studied strata represent five third- to fourth-order DSs. Basal units are temperate to subtropical ramps (DS1A, DS1B, DS2); these are overlain by subtropical to tropical reefal platforms (DS3), which are capped by subtropical to tropical cyclic carbonates (Terminal Carbonate Complex, TCC). Correlation of the Cabo de Gata record to the Melilla area of Morocco, and the Sorbas basin of Spain indicate that early - Late Tortonian ramp strata from these areas are partially time-equivalent. Similar strata are extensively developed in the Western Mediterranean and likely were influenced by a cool climate or influx of nutrients during an overall rise in global sea-level. After ramp deposition, a sequence boundary (SB3) in Cabo de Gata correlates with a sequence boundary in Morocco and a published third-order eustatic fall suggesting at least a partial eustatic control for the sequence boundary. Coral reefs began to develop earlier in Cabo de Gata than at Melilla or Sorbas, arguing for local factors affecting this major environmental transition. Later Messinian reefs (DS3) from all areas are time-equivalent, suggesting a regional or global control on their formation. Some Halimeda-rich horizons in the Western Mediterranean are not time-equivalent event strata as hypothesized by others. Correlation of the relative sea-level curve for the fringing reef complex (DS3) with a published eustatic curve suggests at least a partial third-order global eustatic control for the highstand part of the sequence. Downstepping DS3 reefs and initial subaerial exposure of earlier DS3 reef strata approximately correlate with initiation of a series of subaerial unconformities in the South Pacific. The longer-term relative fall in sea-level during DS3 downstepping reef progradation does not correlate with a published third-order eustatic fall. Eustatic sea-level fluctuations may have been associated with initiation of the Mediterranean Messinian salinity crisis, but the longer-term fall may have been linked to tectonic uplift in the Mediterranean region. Widespread distribution of 'TCC-style' cycles of approximately the same age suggests a regional (Western Mediterranean) or global control on sea-level change responsible for TCC cycles. In addition, four subaerial exposure-capped TCC cycles may correlate with similar subaerial unconformities in the South Pacific, suggesting at least a partial eustatic control on TCC cyclicity. The high rates of relative sea-level change needed to generate a minimum of 25-30 m sea-level changes associated with each cycle are consistent with glacio-eustacy along with rapid evaporitic drawdown in the Mediterranean. ?? 2001 Elsevier Science B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Palaeogeography, Palaeoclimatology, Palaeoecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/S0031-0182(01)00324-8","issn":"00310182","usgsCitation":"Montgomery, P., Farr, M., Franseen, E.K., and Goldstein, R., 2001, Constraining controls on carbonate sequences with high-resolution chronostratigraphy: Upper Miocene, Cabo de Gata region, SE Spain: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 176, no. 1-4, p. 11-45, https://doi.org/10.1016/S0031-0182(01)00324-8.","startPage":"11","endPage":"45","numberOfPages":"35","costCenters":[],"links":[{"id":233710,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":208181,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0031-0182(01)00324-8"}],"volume":"176","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fa07e4b0c8380cd4d8ad","contributors":{"authors":[{"text":"Montgomery, P.","contributorId":40480,"corporation":false,"usgs":true,"family":"Montgomery","given":"P.","email":"","affiliations":[],"preferred":false,"id":394731,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Farr, M.R.","contributorId":65240,"corporation":false,"usgs":true,"family":"Farr","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":394732,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Franseen, E. K.","contributorId":30367,"corporation":false,"usgs":false,"family":"Franseen","given":"E.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":394730,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Goldstein, R.H.","contributorId":18908,"corporation":false,"usgs":true,"family":"Goldstein","given":"R.H.","affiliations":[],"preferred":false,"id":394729,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70022768,"text":"70022768 - 2001 - Seasonal variation in physiological condition of Amblema plicata in the Upper Mississippi River","interactions":[],"lastModifiedDate":"2012-03-12T17:20:09","indexId":"70022768","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2455,"text":"Journal of Shellfish Research","active":true,"publicationSubtype":{"id":10}},"title":"Seasonal variation in physiological condition of Amblema plicata in the Upper Mississippi River","docAbstract":"Measures of physiological condition are being used as sub-lethal endpoints in studies with unionids exposed to a variety of stressors, yet the natural seasonal variation in these measures are largely undocumented. We measured concentrations of glycogen in foot and mantle tissue and a tissue condition index (TCI) in Amblema plicata (Say 1817), about monthly, for 2 years in mussels that were: (1) obtained directly from the Upper Mississippi River (riverine group); and (2) relocated from the river into an artificial pond (relocated group). In both groups, we observed significant seasonal variation in all physiological indicators. Seasonal variation in glycogen was 72% in mantle and 52% in foot tissue and paralleled reproductive activity in this short-term breeder. In the relocated group, most of the variation in glycogen occurred during the first six months after relocation, suggesting that handling stress may have been a contributing factor. The significant seasonal variation in the TCI paralleled glycogen in riverine mussels. We observed tissue-specific differences in glycogen in the riverine group, but not in the relocated group. These data suggest that an interaction of environmental and biological factors influence the energetic status of mussels in natural populations. A better understanding of this variation is needed to interpret changes in physiological condition due to stressors such as relocation.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Shellfish Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"07308000","usgsCitation":"Monroe, E., and Newton, T., 2001, Seasonal variation in physiological condition of Amblema plicata in the Upper Mississippi River: Journal of Shellfish Research, v. 20, no. 3, p. 1167-1171.","startPage":"1167","endPage":"1171","numberOfPages":"5","costCenters":[],"links":[{"id":233570,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"20","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b88ebe4b08c986b316c33","contributors":{"authors":[{"text":"Monroe, E.M.","contributorId":105822,"corporation":false,"usgs":true,"family":"Monroe","given":"E.M.","affiliations":[],"preferred":false,"id":394836,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Newton, T.J.","contributorId":104428,"corporation":false,"usgs":true,"family":"Newton","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":394835,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70022794,"text":"70022794 - 2001 - Mississippi Valley-type lead-zinc deposits through geological time: Implications from recent age-dating research","interactions":[],"lastModifiedDate":"2012-03-12T17:20:04","indexId":"70022794","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2746,"text":"Mineralium Deposita","active":true,"publicationSubtype":{"id":10}},"title":"Mississippi Valley-type lead-zinc deposits through geological time: Implications from recent age-dating research","docAbstract":"Remarkable advances in age dating Mississippi Valley-type (MVT) lead-zinc deposits provide a new opportunity to understand how and where these deposits form in the Earth's crust. These dates are summarized and examined in a framework of global tectonics, paleogeography, fluid migration, and paleoclimate. Nineteen districts have been dated by paleomagnetic and/or radiometric methods. Of the districts that have both paleomagnetic and radiometric dates, only the Pine Point and East Tennessee districts have significant disagreements. This broad agreement between paleomagnetic and radiometric dates provides added confidence in the dating techniques used. The new dates confirm the direct connection between the genesis of MVT lead-zinc ores with global-scale tectonic events. The dates show that MVT deposits formed mainly during large contractional tectonic events at restricted times in the history of the Earth. Only the deposits in the Lennard Shelf of Australia and Nanisivik in Canada have dates that correspond to extensional tectonic events. The most important period for MVT genesis was the Devonian to Permian time, which corresponds to a series of intense tectonic events during the assimilation of Pangea. The second most important period for MVT genesis was Cretaceous to Tertiary time when microplate assimilation affected the western margin of North America and Africa-Eurasia. There is a notable paucity of MVT lead-zinc ore formation following the breakup of Rodinia and Pangea. Of the five MVT deposits hosted in Proterozoic rocks, only the Nanisivik deposit has been dated as Proterozoic. The contrast in abundance between SEDEX and MVT lead-zinc deposits in the Proterozoic questions the frequently suggested notion that the two types of ores share similar genetic paths. The ages of MVT deposits, when viewed with respect to the orogenic cycle in the adjacent orogen suggest that no single hydrologic model can be universally applied to the migration of the ore fluids. However, topographically driven models best explain most MVT districts. The migration of MVT ore fluids is not a natural consequence of basin evolution; rather, MVT districts formed mainly where platform carbonates had some hydrological connection to orogenic belts. There may be a connection between paleoclimate and the formation of some MVT deposits. This possible relationship is suggested by the dominance of evaporated seawater in fluid inclusions in MVT ores, by hydrological considerations that include the need for multiple-basin volumes of ore fluid to form most MVT districts, and the need for adequate precipitation to provide sufficient topographic head for topographically-driven fluid migration. Paleoclimatic conditions that lead to formation of evaporite conditions but yet have adequate precipitation to form large hydrological systems are most commonly present in low latitudes. For the MVT deposits and districts that have been dated, more than 75% of the combined metal produced are from deposits that have dates that correspond to assembly of Pangea in Devonian through Permian time. The exceptional endowment of Pangea and especially, North America with MVT lead-zinc deposits may be explained by the following: (1) Laurentia, which formed the core of North America, stayed in low latitudes during the Paleozoic, which allowed the development of vast carbonate platforms; (2) intense orogenic activity during the assembly of Pangea created ground preparation for many MVT districts through far-field deformation of the craton; (3) uplifted orogenic belts along Pangean suture zones established large-scale migration of basin fluids; and (4) the location of Pangea in low latitudes with paleoclimates with high evaporation rates led to the formation of brines by the evaporation of seawater and infiltration of these brines into deep basin aquifers during Pangean orogenic events.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Mineralium Deposita","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s001260100208","issn":"00264598","usgsCitation":"Leach, D.L., Bradley, D., Lewchuk, M.T., Symons, D.T., De Marsily, G., and Brannon, J., 2001, Mississippi Valley-type lead-zinc deposits through geological time: Implications from recent age-dating research: Mineralium Deposita, v. 36, no. 8, p. 711-740, https://doi.org/10.1007/s001260100208.","startPage":"711","endPage":"740","numberOfPages":"30","costCenters":[],"links":[{"id":208061,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s001260100208"},{"id":233456,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"36","issue":"8","noUsgsAuthors":false,"publicationDate":"2014-03-01","publicationStatus":"PW","scienceBaseUri":"505a5b5ae4b0c8380cd6f4ef","contributors":{"authors":[{"text":"Leach, D. L.","contributorId":18758,"corporation":false,"usgs":true,"family":"Leach","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":394935,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bradley, D.","contributorId":20087,"corporation":false,"usgs":true,"family":"Bradley","given":"D.","affiliations":[],"preferred":false,"id":394936,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lewchuk, Michael T.","contributorId":74890,"corporation":false,"usgs":true,"family":"Lewchuk","given":"Michael","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":394939,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Symons, David T. A.","contributorId":26824,"corporation":false,"usgs":true,"family":"Symons","given":"David","email":"","middleInitial":"T. A.","affiliations":[],"preferred":false,"id":394937,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"De Marsily, G.","contributorId":8262,"corporation":false,"usgs":true,"family":"De Marsily","given":"G.","email":"","affiliations":[],"preferred":false,"id":394934,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Brannon, J.","contributorId":33890,"corporation":false,"usgs":true,"family":"Brannon","given":"J.","email":"","affiliations":[],"preferred":false,"id":394938,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70022795,"text":"70022795 - 2001 - 1857 slip on the San Andreas fault Southeast of Cholame, California","interactions":[],"lastModifiedDate":"2012-03-12T17:20:04","indexId":"70022795","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"1857 slip on the San Andreas fault Southeast of Cholame, California","docAbstract":"Sieh and Jahns (1984) forecasted that the next moderate Parkfield earthquake might trigger a major earthquake along a fault segment greater than 30 km long southeast of Cholame. Their forecast assumed (1) the slip was 3-4 m in 1857 and characteristic of the segment; (2) a slip rate of 3.4 cm/yr; and (3) full strain release in earthquakes. This study represents an independent measurement of channel offsets, on 1:2400-scale low-sun aerial photographs and by field investigation, to estimate the amount of 1857 slip. Although rainfall is only moderate (30 cm/yr), few reliable offsets of less than 20 m persist here because cattle grazing and agricultural disking of soft sediments on the steep terrain greatly aggravate erosion. Reconstruction of offset geometry and size depends heavily on assumptions made about the post-1857 erosion. Most of the apparent 3- to 4-m offsets of Sieh and Jahns (1984) can also be measured as 2 to 3 m larger with equal or lower uncertainty. The four offsets judged as most reliable range between 5.4 and 6.7 m, and the 11 offsets of medium-high reliability average 5.8 ?? 0.3 m. Data are too sparse and ambiguous to resolve details of the 1857 slip for this segment but it is distinctly less than the 9 m of the Carrizo Plain and more than the 3-4 m previously estimated. Further trenching may refine some measurements, but probability calculations for a Cholame segment earthquake must allow for large observer-dependent uncertainty in the 1857 slip. Although the probability of an M ???7 Cholame event seems less than that suggested by a 3.5-m characteristic earthquake model, it remains among the highest in the state.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of the Seismological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1785/0120000043","issn":"00371106","usgsCitation":"Lienkaemper, J.J., 2001, 1857 slip on the San Andreas fault Southeast of Cholame, California: Bulletin of the Seismological Society of America, v. 91, no. 6, p. 1659-1672, https://doi.org/10.1785/0120000043.","startPage":"1659","endPage":"1672","numberOfPages":"14","costCenters":[],"links":[{"id":208080,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120000043"},{"id":233492,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"91","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e229e4b0c8380cd459e7","contributors":{"authors":[{"text":"Lienkaemper, J. J.","contributorId":71947,"corporation":false,"usgs":true,"family":"Lienkaemper","given":"J.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":394940,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70022796,"text":"70022796 - 2001 - Finding disease-carrying mosquitoes from space","interactions":[],"lastModifiedDate":"2012-03-12T17:20:04","indexId":"70022796","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1829,"text":"Geotimes","active":true,"publicationSubtype":{"id":10}},"title":"Finding disease-carrying mosquitoes from space","docAbstract":"[No abstract available]","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geotimes","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00168556","usgsCitation":"Guptill, S., 2001, Finding disease-carrying mosquitoes from space: Geotimes, v. 46, no. 10, p. 26-27.","startPage":"26","endPage":"27","numberOfPages":"2","costCenters":[],"links":[{"id":233493,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"46","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a101be4b0c8380cd53b1a","contributors":{"authors":[{"text":"Guptill, S.C.","contributorId":84417,"corporation":false,"usgs":true,"family":"Guptill","given":"S.C.","email":"","affiliations":[],"preferred":false,"id":394941,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70022797,"text":"70022797 - 2001 - Observations of Daily Temperature Patterns in the Southern Florida Everglades","interactions":[],"lastModifiedDate":"2012-03-12T17:20:04","indexId":"70022797","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Observations of Daily Temperature Patterns in the Southern Florida Everglades","docAbstract":"Temperature is an important factor affecting key hydrological and ecological processes within the subtropical wetlands of the Florida Everglades. Comprehensive measurements are being made to quantify the temporal and spatial variability of the water-temperature regime. Data collected in 2000 at a location near the central flow pathway of the ecosystem showed both daily repetitive cycles and dynamic fluctuations in response to meteorological forces. Time-series data collected at spatial intervals throughout the water column, in the air, and in the underlying plant-litter layer revealed the dynamic nature of the temperature structure, e.g., uniformly well-mixed periods, stratified conditions, inversions, changing vertical gradients, and other characteristics important to understanding ecosystem processes.","largerWorkTitle":"Proceedings of the 2001 Wetlands Engineering and River Restoration Conference","conferenceTitle":"Proceedings of the 2001 Wetlands Engineering and River Restoration Conference","conferenceDate":"27 August 2001 through 31 August 2001","conferenceLocation":"Reno, NV","language":"English","isbn":"0784405816","usgsCitation":"Schaffranek, R., and Jenter, H., 2001, Observations of Daily Temperature Patterns in the Southern Florida Everglades, <i>in</i> Proceedings of the 2001 Wetlands Engineering and River Restoration Conference, Reno, NV, 27 August 2001 through 31 August 2001, p. 679-682.","startPage":"679","endPage":"682","numberOfPages":"4","costCenters":[],"links":[{"id":233494,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6a7fe4b0c8380cd741ca","contributors":{"editors":[{"text":"Hayes D.F.Hayes D.F.","contributorId":128356,"corporation":true,"usgs":false,"organization":"Hayes D.F.Hayes D.F.","id":536485,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Schaffranek, R.W.","contributorId":61468,"corporation":false,"usgs":true,"family":"Schaffranek","given":"R.W.","affiliations":[],"preferred":false,"id":394943,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jenter, H. L.","contributorId":25167,"corporation":false,"usgs":true,"family":"Jenter","given":"H. L.","affiliations":[],"preferred":false,"id":394942,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":1001877,"text":"1001877 - 2001 - Measurement of bovine sperm nuclear shape using Fourier harmonic amplitudes","interactions":[],"lastModifiedDate":"2023-11-20T17:32:25.786638","indexId":"1001877","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2157,"text":"Journal of Andrology","active":true,"publicationSubtype":{"id":10}},"title":"Measurement of bovine sperm nuclear shape using Fourier harmonic amplitudes","docAbstract":"<p><span>An objective method for measuring bovine sperm nuclear shape was developed. Digital images of bovine sperm stained with propidium iodide were collected and Fourier functions used to describe the perimeters of individual sperm nuclei. Harmonic amplitudes from Fourier functions were first shown to be independent of sperm orientation during digitization. Sperm from 12 different bulls were used, and 6 harmonic amplitudes per sperm were found to adequately describe sperm nuclear shape. Based on harmonic amplitudes 0 to 5, cluster analysis was used to generate 20 different groups. Sperm within groups had similar morphologies and groups were distinguished by statistically unique shape characteristics. Harmonic amplitudes 0 to 5 can be used to distinguish previously reported abnormalities such as tapered, pyriform, macrocephalic, and microcephalic, as well as gradations in between. Furthermore, differences were detected among bull harmonic amplitude centroids (</span><i>P</i><span>&nbsp;&lt; .05), indicating that bulls differ in mean sperm nuclear shape.</span></p>","language":"English","publisher":"Wiley","doi":"10.1002/j.1939-4640.2001.tb02218.x","usgsCitation":"Ostermeier, G., Sargeant, G., Yandell, B., Evenson, D., and Parrish, J., 2001, Measurement of bovine sperm nuclear shape using Fourier harmonic amplitudes: Journal of Andrology, v. 22, no. 4, p. 584-594, https://doi.org/10.1002/j.1939-4640.2001.tb02218.x.","productDescription":"11 p.","startPage":"584","endPage":"594","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":478884,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/j.1939-4640.2001.tb02218.x","text":"Publisher Index Page"},{"id":130277,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"22","issue":"4","noUsgsAuthors":false,"publicationDate":"2013-01-02","publicationStatus":"PW","scienceBaseUri":"4f4e4b32e4b07f02db6b4942","contributors":{"authors":[{"text":"Ostermeier, G.C.","contributorId":86295,"corporation":false,"usgs":true,"family":"Ostermeier","given":"G.C.","email":"","affiliations":[],"preferred":false,"id":312013,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sargeant, G.A.","contributorId":51681,"corporation":false,"usgs":true,"family":"Sargeant","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":312009,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Yandell, B.S.","contributorId":76267,"corporation":false,"usgs":true,"family":"Yandell","given":"B.S.","email":"","affiliations":[],"preferred":false,"id":312011,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Evenson, D.P.","contributorId":71135,"corporation":false,"usgs":true,"family":"Evenson","given":"D.P.","email":"","affiliations":[],"preferred":false,"id":312010,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Parrish, J.J.","contributorId":85541,"corporation":false,"usgs":true,"family":"Parrish","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":312012,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":1001715,"text":"1001715 - 2001 - Standing over and hugging in wild wolves","interactions":[],"lastModifiedDate":"2018-01-04T11:02:04","indexId":"1001715","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1163,"text":"Canadian Field-Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"Standing over and hugging in wild wolves","docAbstract":"<p>During six summers, I observed standing over (SO) and hugging in a pack of wild Wolves (Canis lupus) habituated to me. In SO, one Wolf positions its groin above a recumbent Wolf's nose. I observed SO among all yearling and older Wolves for 1-180 seconds (<span>X? = 69 ¨± 46 S.D.; N = 16</span>). SO appeared to be primarily female-oriented and may inform each Wolf of the reproductive status of the other. I observed hugging five times and only during years when food competition was minimal.</p>","language":"English","publisher":"Canadian Field-Naturalist","usgsCitation":"Mech, L.D., 2001, Standing over and hugging in wild wolves: Canadian Field-Naturalist, v. 115, p. 179-181.","productDescription":"3 p.","startPage":"179","endPage":"181","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":129039,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"115","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e0e4b07f02db5e410d","contributors":{"authors":[{"text":"Mech, L. David 0000-0003-3944-7769 david_mech@usgs.gov","orcid":"https://orcid.org/0000-0003-3944-7769","contributorId":2518,"corporation":false,"usgs":true,"family":"Mech","given":"L.","email":"david_mech@usgs.gov","middleInitial":"David","affiliations":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":311572,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70022814,"text":"70022814 - 2001 - The Upper Pennsylvanian Pittsburgh coal bed: Resources and mine models","interactions":[],"lastModifiedDate":"2022-12-22T18:50:03.31214","indexId":"70022814","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","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":"The Upper Pennsylvanian Pittsburgh coal bed: Resources and mine models","docAbstract":"<p><span>The U.S. Geological Survey recently completed a digital coal resource assessment model of the Upper Pennsylvanian Pittsburgh coal bed, which indicates that after subtracting mined-out coal, 16 billion short tons (14 billion tonnes) remain of the original 34 billion short tons (31 billion tonnes) of coal. When technical, environmental, and social restrictions are applied to the remaining Pittsburgh coal model, only 12 billion short tons (11 billion tonnes) are available for mining. Our assessment models estimate that up to 0.61 billion short tons (0.55 billion tonnes), 2.7 billion short tons (2.4 billion tonnes), and 8.5 billion short tons (7.7 billion tonnes) could be available for surface mining, continuous mining, and longwall mining, respectively. This analysis is an example of a second-generation regional coal availability study designed to model recoverability characteristics for all the major coal beds in the United States.</span></p>","language":"English","publisher":"Springer","doi":"10.1023/A:1011529430807","issn":"15207439","usgsCitation":"Watson, W., Ruppert, L., Tewalt, S., and Bragg, L.J., 2001, The Upper Pennsylvanian Pittsburgh coal bed: Resources and mine models: Natural Resources Research, v. 10, no. 1, p. 21-34, https://doi.org/10.1023/A:1011529430807.","productDescription":"14 p.","startPage":"21","endPage":"34","costCenters":[],"links":[{"id":233789,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maryland, Ohio, Pennsylvania, West Virginia","otherGeospatial":"Upper Pennsylvanian Pittsburgh Coal Bed","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -83.78929271159902,\n              39.066553580455945\n            ],\n            [\n              -83.64647044597436,\n              38.81875203081822\n            ],\n            [\n              -82.8774274772241,\n              38.85298303544727\n            ],\n            [\n              -82.43797435222433,\n              38.54431172682851\n            ],\n            [\n              -80.60325755534937,\n              37.69730870201133\n            ],\n            [\n              -79.74632396159942,\n              38.58726238265223\n            ],\n            [\n              -79.37278880534907,\n              38.707387597242956\n            ],\n            [\n              -78.91136302409907,\n              38.91284766884306\n            ],\n            [\n              -78.5378278678494,\n              39.34748007643097\n            ],\n            [\n              -77.77977122722427,\n              39.89752847367427\n            ],\n            [\n              -78.274155992849,\n              40.67690125274703\n            ],\n            [\n              -78.74656810222416,\n              41.298869404839365\n            ],\n            [\n              -80.26268138347442,\n              41.323626036386486\n            ],\n            [\n              -81.3832868522241,\n              40.560151221702995\n            ],\n            [\n              -83.28392161784913,\n              39.52566599169779\n            ],\n            [\n              -83.78929271159902,\n              39.066553580455945\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"10","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb153e4b08c986b3252cf","contributors":{"authors":[{"text":"Watson, W.D.","contributorId":96730,"corporation":false,"usgs":true,"family":"Watson","given":"W.D.","email":"","affiliations":[],"preferred":false,"id":394988,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ruppert, L.F. 0000-0003-4990-0539","orcid":"https://orcid.org/0000-0003-4990-0539","contributorId":59043,"corporation":false,"usgs":true,"family":"Ruppert","given":"L.F.","affiliations":[],"preferred":false,"id":394987,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Tewalt, S.J.","contributorId":55838,"corporation":false,"usgs":true,"family":"Tewalt","given":"S.J.","affiliations":[],"preferred":false,"id":394986,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bragg, L. J.","contributorId":104055,"corporation":false,"usgs":true,"family":"Bragg","given":"L.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":394989,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70022813,"text":"70022813 - 2001 - Evaluating the efficiency of a one-square-meter quadrat sampler for riffle-dwelling fish","interactions":[],"lastModifiedDate":"2012-03-12T17:20:39","indexId":"70022813","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Evaluating the efficiency of a one-square-meter quadrat sampler for riffle-dwelling fish","docAbstract":"We evaluated the efficacy of a 1-m2 quadrat sampler for collecting riffle-dwelling fishes in an Ozark stream. We used a dual-gear approach to evaluate sampler efficiency in relation to species, fish size, and habitat variables. Quasi-likelihood regression showed sampling efficiency to differ significantly (P < 0.001) among species of four common fish families (Cyprinidae, Ictaluridae, Cottidae, and Percidae) but not among species within each family (P > 0.05). Sampling efficiency was significantly influenced by physical habitat characteristics. Mean current velocity negatively influenced sampling efficiencies for Cyprinidae (P = 0.009), Cottidae (P = 0.006), and Percidae (P < 0.001), and the amount of cobble substrate negatively influenced sampling efficiencies for Cyprinidae (P = 0.025), Ictaluridae (P < 0.001), and Percidae (P < 0.001). Water temperature negatively influenced sampling efficiency for Cyprinidae (P = 0.009) and Ictaluridae (P = 0.006). Species-richness efficiency was positively influenced (P = 0.002) by percentage of riffle sampled. Under average habitat conditions encountered in stream riffles, the 1-m2 quadrat sampler was most efficient at estimating the densities of Cyprinidae (84%) and Cottidae (80%) and least efficient for Percidae (57%) and Ictaluridae (31%).","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"North American Journal of Fisheries Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/1548-8675(2001)021<0076:ETEOAO>2.0.CO;2","issn":"02755947","usgsCitation":"Peterson, J., and Rabeni, C., 2001, Evaluating the efficiency of a one-square-meter quadrat sampler for riffle-dwelling fish: North American Journal of Fisheries Management, v. 21, no. 1, p. 76-85, https://doi.org/10.1577/1548-8675(2001)021<0076:ETEOAO>2.0.CO;2.","startPage":"76","endPage":"85","numberOfPages":"10","costCenters":[],"links":[{"id":233788,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":208215,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/1548-8675(2001)021<0076:ETEOAO>2.0.CO;2"}],"volume":"21","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0bf9e4b0c8380cd5298f","contributors":{"authors":[{"text":"Peterson, J.T.","contributorId":30170,"corporation":false,"usgs":true,"family":"Peterson","given":"J.T.","email":"","affiliations":[],"preferred":false,"id":394984,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rabeni, C.F.","contributorId":67823,"corporation":false,"usgs":true,"family":"Rabeni","given":"C.F.","affiliations":[],"preferred":false,"id":394985,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70023783,"text":"70023783 - 2001 - Using multiple geochemical tracers to characterize the hydrogeology of the submarine spring off Crescent Beach, Florida","interactions":[],"lastModifiedDate":"2020-10-03T16:49:35.074196","indexId":"70023783","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"title":"Using multiple geochemical tracers to characterize the hydrogeology of the submarine spring off Crescent Beach, Florida","docAbstract":"<p id=\"simple-para.0080\">A spectacular submarine spring is located about 4 km east of Crescent Beach, FL, in the Atlantic Ocean. The single vent feature of Crescent Beach Spring provides a unique opportunity to examine onshore–offshore hydrogeologic processes, as well as point source submarine ground water discharge. The Floridan aquifer system in northeastern Florida consists of Tertiary interspersed limestone and dolomite strata. Impermeable beds confine the water-bearing zones under artesian pressure. Miocene and younger confining strata have been eroded away at the vent feature, enabling direct hydrologic communication of Eocene ground water with coastal bottom waters.</p><p id=\"simple-para.0085\">The spring water had a salinity of 6.02, which was immediately diluted by ambient seawater during advection/mixing. The concentration of major solutes in spring water and onshore well waters confirm a generalized easterly flow direction of artesian ground water. Nutrient concentrations were generally low in the reducing vent samples, and the majority of the total nitrogen species existed as NH<sub>3</sub>. The submarine ground water tracers, Rn-222 (1174 dpm l<sup>−1</sup>, dpm), methane (232 nM) and barium (294.5 nM) were all highly enriched in the spring water relative to ambient seawater. The concentrations of the reverse redox elements U, V and Mo were expectedly low in the submarine waters. The strontium isotope ratio of the vent water (<sup>87</sup>Sr/<sup>86</sup>Sr=0.70798) suggests that the spring water contain an integrated signature indicative of Floridan aquifer system ground water. Additional Sr isotopic ratios from a series of surficial and Lower Floridan well samples suggest dynamic ground water mixing, and do not provide clear evidence for a single hydrogeologic water source at the spring vent. In this karst-dominated aquifer, such energetic mixing at the vent feature is expected, and would be facilitated by conduit and fractured flow. Radium isotope activities were utilized to estimate flow-path trajectories and to provide information on potential travel times between an onshore well and the spring. Using either<span>&nbsp;</span><sup>223</sup>Ra and<span>&nbsp;</span><sup>224</sup>Ra or<span>&nbsp;</span><sup>228</sup>Ra, and qualifying this approach with several key assumptions, estimates of water mass travel times from an upper Floridan well in Crescent Beach to the submarine vent feature (distance=4050 m) are in the order of ∼0.01–0.1 m min<sup>−1</sup>.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/S0009-2541(01)00322-9","issn":"00092541","usgsCitation":"Swarzenski, P., Reich, C., Spechler, R., Kindinger, J., and Moore, W., 2001, Using multiple geochemical tracers to characterize the hydrogeology of the submarine spring off Crescent Beach, Florida: Chemical Geology, v. 179, no. 1-4, p. 187-202, https://doi.org/10.1016/S0009-2541(01)00322-9.","productDescription":"16 p.","startPage":"187","endPage":"202","numberOfPages":"16","costCenters":[],"links":[{"id":232585,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Crescent Beach","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -81.28028869628905,\n              29.74798440371394\n            ],\n            [\n              -81.23153686523438,\n              29.74798440371394\n            ],\n            [\n              -81.23153686523438,\n              29.786429141465277\n            ],\n            [\n              -81.28028869628905,\n              29.786429141465277\n            ],\n            [\n              -81.28028869628905,\n              29.74798440371394\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"179","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc07be4b08c986b32a152","contributors":{"authors":[{"text":"Swarzenski, P.W. 0000-0003-0116-0578","orcid":"https://orcid.org/0000-0003-0116-0578","contributorId":29487,"corporation":false,"usgs":true,"family":"Swarzenski","given":"P.W.","affiliations":[],"preferred":false,"id":398826,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reich, C. D. 0000-0002-2534-1456","orcid":"https://orcid.org/0000-0002-2534-1456","contributorId":36978,"corporation":false,"usgs":true,"family":"Reich","given":"C. D.","affiliations":[],"preferred":false,"id":398827,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Spechler, R. M.","contributorId":85961,"corporation":false,"usgs":true,"family":"Spechler","given":"R. M.","affiliations":[],"preferred":false,"id":398829,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kindinger, J. L.","contributorId":38983,"corporation":false,"usgs":true,"family":"Kindinger","given":"J. L.","affiliations":[],"preferred":false,"id":398828,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Moore, W.S.","contributorId":90875,"corporation":false,"usgs":true,"family":"Moore","given":"W.S.","email":"","affiliations":[],"preferred":false,"id":398830,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
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