{"pageNumber":"968","pageRowStart":"24175","pageSize":"25","recordCount":46734,"records":[{"id":70027762,"text":"70027762 - 2005 - Radiogenic 4He as a conservative tracer in buried‐valley aquifers","interactions":[],"lastModifiedDate":"2018-03-30T11:09:10","indexId":"70027762","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Radiogenic <sup>4</sup>He as a conservative tracer in buried‐valley aquifers","title":"Radiogenic 4He as a conservative tracer in buried‐valley aquifers","docAbstract":"<p><span>The accumulation of&nbsp;</span><sup>4</sup><span>He in groundwater can be a powerful tool in hydrogeologic investigations. However, the use of<span>&nbsp;</span></span><sup>4</sup><span>He often suffers from disagreement or uncertainty related to in situ and external sources of<span>&nbsp;</span></span><sup>4</sup><span>He. In situ sources are quantified by several methods, while external sources are often treated as calibration parameters in modeling. We present data from direct laboratory measurements of<span>&nbsp;</span></span><sup>4</sup><span>He release from sediments and field data of dissolved<span>&nbsp;</span></span><sup>4</sup><span>He in the Mahomet Aquifer, a well‐studied buried‐valley aquifer in central Illinois. The laboratory‐derived accumulation rates (0.13–0.91 μcm</span><sup>3</sup><span><span>&nbsp;</span>STP kg</span><sub>water</sub><sup>−1</sup><span><span>&nbsp;</span>yr</span><sup>−1</sup><span>) are 1–2 orders of magnitude greater than the accumulation rates based on the U and Th concentrations of the sediments (0.004–0.009 μcm</span><sup>3</sup><span><span>&nbsp;</span>STP kg</span><sub>water</sub><sup>−1</sup><span><span>&nbsp;</span>yr</span><sup>−1</sup><span>). The direct measurement of accumulation rates are more consistent with dissolved concentrations of<span>&nbsp;</span></span><sup>4</sup><span>He in the groundwater. We suggest that the direct measurement method is applicable in a variety of hydrogeologic settings. The patterns of accumulation of<span>&nbsp;</span></span><sup>4</sup><span>He are consistent with the conceptual model of flow in the aquifer based on hydraulic and geochemical evidence and show areas where in situ production and external sources of<span>&nbsp;</span></span><sup>4</sup><span>He are dominant. In the southwestern part of the study area, Ne concentrations are less than atmospheric solubility, indicating gases have been lost from the groundwater. Available evidence indicates that the gases are lost as groundwater passes by pockets of CH</span><sub>4</sub><span><span>&nbsp;</span>in glacial deposits overlying the aquifer. However, the external flux from the underlying bedrock appears to dominate the accumulation of radiogenic<span>&nbsp;</span></span><sup>4</sup><span>He in the aquifer in the southwestern part of the study area, and the loss or gain of helium as groundwater passes through the overlying sediments is minor in comparison.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2004WR003857","usgsCitation":"Van der Hoven, S.J., Wright, R.E., Carstens, D.A., and Hackley, K.C., 2005, Radiogenic 4He as a conservative tracer in buried‐valley aquifers: Water Resources Research, v. 41, no. 11, Article W11414; 13 p., https://doi.org/10.1029/2004WR003857.","productDescription":"Article W11414; 13 p.","costCenters":[],"links":[{"id":477919,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2004wr003857","text":"Publisher Index Page"},{"id":238141,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"41","issue":"11","noUsgsAuthors":false,"publicationDate":"2005-11-16","publicationStatus":"PW","scienceBaseUri":"505a93f8e4b0c8380cd8111d","contributors":{"authors":[{"text":"Van der Hoven, Stephen J.","contributorId":95260,"corporation":false,"usgs":false,"family":"Van der Hoven","given":"Stephen","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":415114,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wright, R. Erik","contributorId":59588,"corporation":false,"usgs":false,"family":"Wright","given":"R.","email":"","middleInitial":"Erik","affiliations":[],"preferred":false,"id":415112,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Carstens, David A.","contributorId":47570,"corporation":false,"usgs":false,"family":"Carstens","given":"David","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":415113,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hackley, Keith C.","contributorId":12166,"corporation":false,"usgs":true,"family":"Hackley","given":"Keith","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":415111,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70027754,"text":"70027754 - 2005 - Acute toxicity value extrapolation with fish and aquatic invertebrates","interactions":[],"lastModifiedDate":"2016-10-13T10:48:39","indexId":"70027754","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","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":"Acute toxicity value extrapolation with fish and aquatic invertebrates","docAbstract":"<p><span>Assessment of risk posed by an environmental contaminant to an aquatic community requires estimation of both its magnitude of occurrence (</span><i class=\"EmphasisTypeItalic \">exposure</i><span>) and its ability to cause harm (</span><i class=\"EmphasisTypeItalic \">effects</i><span>). Our ability to estimate </span><i class=\"EmphasisTypeItalic \">effects</i><span> is often hindered by limited toxicological information. As a result, resource managers and environmental regulators are often faced with the need to extrapolate across taxonomic groups in order to protect the more sensitive members of the aquatic community. The goals of this effort were to 1) compile and organize an extensive body of acute toxicity data, 2) characterize the distribution of toxicant sensitivity across taxa and species, and 3) evaluate the utility of toxicity extrapolation methods based upon sensitivity relations among species and chemicals. Although the analysis encompassed a wide range of toxicants and species, pesticides and freshwater fish and invertebrates were emphasized as a reflection of available data. Although it is obviously desirable to have high-quality acute toxicity values for as many species as possible, the results of this effort allow for better use of available information for predicting the sensitivity of untested species to environmental contaminants. A software program entitled “Ecological Risk Analysis” (ERA) was developed that predicts toxicity values for sensitive members of the aquatic community using species sensitivity distributions. Of several methods evaluated, the ERA program used with minimum data sets comprising acute toxicity values for rainbow trout, bluegill, daphnia, and mysids provided the most satisfactory predictions with the least amount of data. However, if predictions must be made using data for a single species, the most satisfactory results were obtained with extrapolation factors developed for rainbow trout (0.412), bluegill (0.331), or scud (0.041). Although many specific exceptions occur, our results also support the conventional wisdom that invertebrates are generally more sensitive to contaminants than fish are.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s00244-004-0151-8","issn":"00904341","usgsCitation":"Buckler, D.R., Mayer, F.L., Ellersieck, M.R., and Asfaw, A., 2005, Acute toxicity value extrapolation with fish and aquatic invertebrates: Archives of Environmental Contamination and Toxicology, v. 49, no. 4, p. 546-558, https://doi.org/10.1007/s00244-004-0151-8.","productDescription":"13 p.","startPage":"546","endPage":"558","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":237995,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":210915,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00244-004-0151-8"}],"volume":"49","issue":"4","noUsgsAuthors":false,"publicationDate":"2005-09-30","publicationStatus":"PW","scienceBaseUri":"5059e6dfe4b0c8380cd476b3","contributors":{"authors":[{"text":"Buckler, Denny R.","contributorId":10107,"corporation":false,"usgs":true,"family":"Buckler","given":"Denny","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":415077,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mayer, Foster L.","contributorId":114193,"corporation":false,"usgs":true,"family":"Mayer","given":"Foster","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":415078,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ellersieck, Mark R.","contributorId":80841,"corporation":false,"usgs":true,"family":"Ellersieck","given":"Mark","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":415079,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Asfaw, Amha","contributorId":24653,"corporation":false,"usgs":true,"family":"Asfaw","given":"Amha","email":"","affiliations":[],"preferred":false,"id":415076,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70027732,"text":"70027732 - 2005 - Use of XML and Java for collaborative petroleum reservoir modeling on the Internet","interactions":[],"lastModifiedDate":"2012-03-12T17:20:49","indexId":"70027732","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1315,"text":"Computers & Geosciences","printIssn":"0098-3004","active":true,"publicationSubtype":{"id":10}},"title":"Use of XML and Java for collaborative petroleum reservoir modeling on the Internet","docAbstract":"The GEMINI (Geo-Engineering Modeling through INternet Informatics) is a public-domain, web-based freeware that is made up of an integrated suite of 14 Java-based software tools to accomplish on-line, real-time geologic and engineering reservoir modeling. GEMINI facilitates distant collaborations for small company and academic clients, negotiating analyses of both single and multiple wells. The system operates on a single server and an enterprise database. External data sets must be uploaded into this database. Feedback from GEMINI users provided the impetus to develop Stand Alone Web Start Applications of GEMINI modules that reside in and operate from the user's PC. In this version, the GEMINI modules run as applets, which may reside in local user PCs, on the server, or Java Web Start. In this enhanced version, XML-based data handling procedures are used to access data from remote and local databases and save results for later access and analyses. The XML data handling process also integrates different stand-alone GEMINI modules enabling the user(s) to access multiple databases. It provides flexibility to the user to customize analytical approach, database location, and level of collaboration. An example integrated field-study using GEMINI modules and Stand Alone Web Start Applications is provided to demonstrate the versatile applicability of this freeware for cost-effective reservoir modeling. ?? 2005 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Computers and Geosciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.cageo.2004.12.007","issn":"00983004","usgsCitation":"Victorine, J., Watney, W., and Bhattacharya, S., 2005, Use of XML and Java for collaborative petroleum reservoir modeling on the Internet: Computers & Geosciences, v. 31, no. 9, p. 1151-1164, https://doi.org/10.1016/j.cageo.2004.12.007.","startPage":"1151","endPage":"1164","numberOfPages":"14","costCenters":[],"links":[{"id":211050,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.cageo.2004.12.007"},{"id":238208,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbe8de4b08c986b329655","contributors":{"authors":[{"text":"Victorine, J.","contributorId":59239,"corporation":false,"usgs":true,"family":"Victorine","given":"J.","email":"","affiliations":[],"preferred":false,"id":414983,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Watney, W.L.","contributorId":43087,"corporation":false,"usgs":true,"family":"Watney","given":"W.L.","email":"","affiliations":[],"preferred":false,"id":414982,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bhattacharya, S.","contributorId":97226,"corporation":false,"usgs":true,"family":"Bhattacharya","given":"S.","email":"","affiliations":[],"preferred":false,"id":414984,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70027728,"text":"70027728 - 2005 - An efficient algorithm for double-difference tomography and location in heterogeneous media, with an application to the Kilauea volcano","interactions":[],"lastModifiedDate":"2019-05-08T08:48:32","indexId":"70027728","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"An efficient algorithm for double-difference tomography and location in heterogeneous media, with an application to the Kilauea volcano","docAbstract":"Improving our understanding of crustal processes requires a better knowledge of the geometry and the position of geological bodies. In this study we have designed a method based upon double-difference relocation and tomography to image, as accurately as possible, a heterogeneous medium containing seismogenic objects. Our approach consisted not only of incorporating double difference in tomography but also partly in revisiting tomographic schemes for choosing accurate and stable numerical strategies, adapted to the use of cross-spectral time delays. We used a finite difference solution to the eikonal equation for travel time computation and a Tarantola-Valette approach for both the classical and double-difference three-dimensional tomographic inversion to find accurate earthquake locations and seismic velocity estimates. We estimated efficiently the square root of the inverse model's covariance matrix in the case of a Gaussian correlation function. It allows the use of correlation length and a priori model variance criteria to determine the optimal solution. Double-difference relocation of similar earthquakes is performed in the optimal velocity model, making absolute and relative locations less biased by the velocity model. Double-difference tomography is achieved by using high-accuracy time delay measurements. These algorithms have been applied to earthquake data recorded in the vicinity of Kilauea and Mauna Loa volcanoes for imaging the volcanic structures. Stable and detailed velocity models are obtained: the regional tomography unambiguously highlights the structure of the island of Hawaii and the double-difference tomography shows a detailed image of the southern Kilauea caldera-upper east rift zone magmatic complex. Copyright 2005 by the American Geophysical Union.","language":"English","publisher":"AGU","doi":"10.1029/2004JB003466","issn":"01480227","usgsCitation":"Monteiller, V., Got, J., Virieux, J., and Okubo, P., 2005, An efficient algorithm for double-difference tomography and location in heterogeneous media, with an application to the Kilauea volcano: Journal of Geophysical Research B: Solid Earth, v. 110, no. 12, p. 1-22, https://doi.org/10.1029/2004JB003466.","productDescription":"22 p.","startPage":"1","endPage":"22","numberOfPages":"22","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":477690,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2004jb003466","text":"Publisher Index Page"},{"id":238140,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211005,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2004JB003466"}],"country":"United States","state":"Hawaii","otherGeospatial":"Kilauea volcano","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -155.3679656982422,\n              19.281980191903514\n            ],\n            [\n              -155.137939453125,\n              19.281980191903514\n            ],\n            [\n              -155.137939453125,\n              19.479539596600667\n            ],\n            [\n              -155.3679656982422,\n              19.479539596600667\n            ],\n            [\n              -155.3679656982422,\n              19.281980191903514\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"110","issue":"12","noUsgsAuthors":false,"publicationDate":"2005-12-16","publicationStatus":"PW","scienceBaseUri":"5059ea2fe4b0c8380cd486b4","contributors":{"authors":[{"text":"Monteiller, V.","contributorId":62409,"corporation":false,"usgs":true,"family":"Monteiller","given":"V.","email":"","affiliations":[],"preferred":false,"id":414968,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Got, J.-L.","contributorId":80867,"corporation":false,"usgs":true,"family":"Got","given":"J.-L.","email":"","affiliations":[],"preferred":false,"id":414969,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Virieux, J.","contributorId":10617,"corporation":false,"usgs":true,"family":"Virieux","given":"J.","email":"","affiliations":[],"preferred":false,"id":414966,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Okubo, P. 0000-0002-0381-6051","orcid":"https://orcid.org/0000-0002-0381-6051","contributorId":49432,"corporation":false,"usgs":true,"family":"Okubo","given":"P.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":false,"id":414967,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70027724,"text":"70027724 - 2005 - An integrated environmental tracer approach to characterizing groundwater circulation in a mountain block","interactions":[],"lastModifiedDate":"2018-03-30T11:07:22","indexId":"70027724","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"An integrated environmental tracer approach to characterizing groundwater circulation in a mountain block","docAbstract":"<p><span>The subsurface transfer of water from a mountain block to an adjacent basin (mountain block recharge (MBR)) is a commonly invoked mechanism of recharge to intermountain basins. However, MBR estimates are highly uncertain. We present an approach to characterize bulk fluid circulation in a mountain block and thus MBR that utilizes environmental tracers from the basin aquifer. Noble gas recharge temperatures, groundwater ages, and temperature data combined with heat and fluid flow modeling are used to identify clearly improbable flow regimes in the southeastern Salt Lake Valley, Utah, and adjacent Wasatch Mountains. The range of possible MBR rates is reduced by 70%. Derived MBR rates (5.5–12.6 × 10</span><sup>4</sup><span><span>&nbsp;</span>m</span><sup>3</sup><span><span>&nbsp;</span>d</span><sup>−1</sup><span>) are on the same order of magnitude as previous large estimates, indicating that significant MBR to intermountain basins is plausible. However, derived rates are 50–100% of the lowest previous estimate, meaning total recharge is probably less than previously thought.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2005WR004178","usgsCitation":"Manning, A.H., and Solomon, D., 2005, An integrated environmental tracer approach to characterizing groundwater circulation in a mountain block: Water Resources Research, v. 41, no. 12, Article W12412; 19 p., https://doi.org/10.1029/2005WR004178.","productDescription":"Article W12412; 19 p.","costCenters":[],"links":[{"id":477723,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2005wr004178","text":"Publisher Index Page"},{"id":238102,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"41","issue":"12","noUsgsAuthors":false,"publicationDate":"2005-12-06","publicationStatus":"PW","scienceBaseUri":"5059ea80e4b0c8380cd488e1","contributors":{"authors":[{"text":"Manning, Andrew H. 0000-0002-6404-1237 amanning@usgs.gov","orcid":"https://orcid.org/0000-0002-6404-1237","contributorId":1305,"corporation":false,"usgs":true,"family":"Manning","given":"Andrew","email":"amanning@usgs.gov","middleInitial":"H.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":414950,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Solomon, D. Kip","contributorId":71441,"corporation":false,"usgs":true,"family":"Solomon","given":"D. Kip","affiliations":[],"preferred":false,"id":414951,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70027715,"text":"70027715 - 2005 - Modeling and model validation of wind-driven circulation in Upper Klamath Lake, Oregon","interactions":[],"lastModifiedDate":"2012-03-12T17:20:50","indexId":"70027715","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Modeling and model validation of wind-driven circulation in Upper Klamath Lake, Oregon","docAbstract":"The hydrodynamics in the Upper Klamath Lake (UKL) plays a significant role in the water quality conditions of the lake. In order to provide a quantitative evaluation of the impacts of hydrodynamics on water quality in UKL, a detailed hydrodynamic model was implemented using an unstructured grid 3-D hydrodynamic model known as the UnTRIM model. The circulation in UKL is driven primarily by wind. Wind speed and direction time-series records were used as input, the numerical model reproduced the wind \"set-up\" and \"set-down\" at down wind and upwind ends of the lake, respectively. Of the two acoustic Doppler current profiler (ADCP) records, the UnTRIM model reproduced the measured velocity at the deep station. At the shallow station, the model results showed diurnal patterns that correlated well with wind variations, but the measured velocity showed water velocity sustained at 3 to 5 cm/sec or above. Discrepancies between the model results and observations at the shallow ADCP station is discussed on the basis of correct physics. If the field measurements are inconsistent with the known physics, there exists the possibility that the field data are suspect or the field data are revealing some physical processes that are not yet understood. Copyright ASCE 2005.","largerWorkTitle":"World Water Congress 2005: Impacts of Global Climate Change - Proceedings of the 2005 World Water and Environmental Resources Congress","conferenceTitle":"2005 World Water and Environmental Resources Congress","conferenceDate":"15 May 2005 through 19 May 2005","conferenceLocation":"Anchorage, AK","language":"English","doi":"10.1061/40792(173)426","isbn":"0784407924; 9780784407929","usgsCitation":"Cheng, R.T., Gartner, J.W., and Wood, T., 2005, Modeling and model validation of wind-driven circulation in Upper Klamath Lake, Oregon, <i>in</i> World Water Congress 2005: Impacts of Global Climate Change - Proceedings of the 2005 World Water and Environmental Resources Congress, Anchorage, AK, 15 May 2005 through 19 May 2005, https://doi.org/10.1061/40792(173)426.","startPage":"426","costCenters":[],"links":[{"id":210913,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/40792(173)426"},{"id":237993,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"505a5bd8e4b0c8380cd6f848","contributors":{"authors":[{"text":"Cheng, R. T.","contributorId":23138,"corporation":false,"usgs":false,"family":"Cheng","given":"R.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":414882,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gartner, J. W.","contributorId":81903,"corporation":false,"usgs":false,"family":"Gartner","given":"J.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":414884,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wood, T.","contributorId":31194,"corporation":false,"usgs":true,"family":"Wood","given":"T.","affiliations":[],"preferred":false,"id":414883,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70027714,"text":"70027714 - 2005 - Steam injection pilot study in a contaminated fractured limestone (Maine, USA): Modeling and analysis of borehole radar reflection data","interactions":[],"lastModifiedDate":"2020-03-10T15:59:19","indexId":"70027714","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Steam injection pilot study in a contaminated fractured limestone (Maine, USA): Modeling and analysis of borehole radar reflection data","docAbstract":"Steam-enhanced remediation (SER) has been successfully used to remove DNAPL and LNAPL contaminants in porous media. Between August and November 2002, SER was tested in fractured limestone at the former Loring Air Force Base, in Maine, USA. During the SER investigation, the U.S. Geological Survey conducted a series of borehole radar surveys to evaluate the effectiveness of radar methods for monitoring the movement of steam and heat through the fractured limestone. The data were collected before steam injection, 10 days after the beginning of injection, and at the end of injection. In this paper, reflection-mode borehole radar data from wells JBW-7816 and JBW-7817A are presented and discussed. Theoretical modeling was performed to predict the variation of fracture reflectivity owed to heating, to show displacement of water and to assess the effect of SER at the site. Analysis of the radar profile data indicates some variations resulting from heating (increase of continuity of reflectors, attenuation of deeper reflections) but no substantial variation of traveltimes. Spectral content analysis of several individual reflections surrounding the boreholes was used to investigate the replacement of water by steam in the fractures. Observed decrease in radar reflectivity was too small to be explained by a replacement of water by steam, except for two high-amplitude reflectors, which disappeared near the end of the injection; moreover, no change of polarity, consistent with steam replacing water, was observed. The decrease of amplitude was greater for reflectors near well JBW-7817A and is explained by a greater heating around this well.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of the 3rd International Workshop on Advanced Ground Penetrating Radar, IWAGPR 2005","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"3rd International Workshop on Advanced Ground Penetrating Radar, IWAGPR 2005","conferenceDate":"May 3-5, 2005","conferenceLocation":"Delft, Netherlands","language":"English","publisher":"IEEE","doi":"10.1109/AGPR.2005.1487846","isbn":"9080970115; 9789080970113","usgsCitation":"Gregoire, C., Lane, J., and Joesten, P., 2005, Steam injection pilot study in a contaminated fractured limestone (Maine, USA): Modeling and analysis of borehole radar reflection data, <i>in</i> Proceedings of the 3rd International Workshop on Advanced Ground Penetrating Radar, IWAGPR 2005, v. 2005, Delft, Netherlands, May 3-5, 2005, p. 55-59, https://doi.org/10.1109/AGPR.2005.1487846.","productDescription":"5 p.","startPage":"55","endPage":"59","numberOfPages":"5","costCenters":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":237992,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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Jr.","contributorId":66723,"corporation":false,"usgs":true,"family":"Lane","given":"J.W.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":414881,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Joesten, P. K.","contributorId":62818,"corporation":false,"usgs":true,"family":"Joesten","given":"P. K.","affiliations":[],"preferred":false,"id":414880,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70027713,"text":"70027713 - 2005 - Sexually dimorphic patterns of space use throughout ontogeny in the spotted hyena (Crocuta crocuta)","interactions":[],"lastModifiedDate":"2020-11-16T15:38:28.119923","indexId":"70027713","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2515,"text":"Journal of Zoology","active":true,"publicationSubtype":{"id":10}},"title":"Sexually dimorphic patterns of space use throughout ontogeny in the spotted hyena (Crocuta crocuta)","docAbstract":"<p>Observational and telemetry data were used in a geographic information system database to document the ontogenetic development of sexually dimorphic patterns of space use among free-living spotted hyenas Crocuta crocuta in Kenya. No measures of space use were sexually dimorphic among den-dwelling cubs, nor were sex differences apparent among hyenas that had ceased using dens for shelter until these animals were c. 30 months of age. Significant sex differences emerged late in the third year of life, and persisted throughout the remainder of the life span; males were found farther from the geographic centre of the natal territory than were females, and the mean size of individual 95% utility distributions was larger for males than females. Most dispersal events by radio-collared males were preceded by a series of exploratory excursions outside the natal territory. All collared males dispersed, but no collared females did so. Most dispersing males moved only one or two home ranges away at dispersal, roughly 8-10 km distant from the natal territory, before settling in a new social group.</p>","language":"English","publisher":"Wiley","doi":"10.1017/S0952836905007478","issn":"09528369","usgsCitation":"Boydston, E., Kapheim, K., Van Horn, R.C., Smale, L., and Holekamp, K., 2005, Sexually dimorphic patterns of space use throughout ontogeny in the spotted hyena (Crocuta crocuta): Journal of Zoology, v. 267, no. 3, p. 271-281, https://doi.org/10.1017/S0952836905007478.","productDescription":"11 p.","startPage":"271","endPage":"281","numberOfPages":"11","costCenters":[],"links":[{"id":237958,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"267","issue":"3","noUsgsAuthors":false,"publicationDate":"2006-02-28","publicationStatus":"PW","scienceBaseUri":"505b8dc2e4b08c986b318553","contributors":{"authors":[{"text":"Boydston, E. E.","contributorId":106045,"corporation":false,"usgs":false,"family":"Boydston","given":"E. E.","affiliations":[],"preferred":false,"id":414878,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kapheim, K.M.","contributorId":64197,"corporation":false,"usgs":true,"family":"Kapheim","given":"K.M.","affiliations":[],"preferred":false,"id":414876,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Van Horn, R. C.","contributorId":53745,"corporation":false,"usgs":true,"family":"Van Horn","given":"R.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":414875,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Smale, L.","contributorId":72324,"corporation":false,"usgs":true,"family":"Smale","given":"L.","email":"","affiliations":[],"preferred":false,"id":414877,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Holekamp, K.E.","contributorId":34077,"corporation":false,"usgs":true,"family":"Holekamp","given":"K.E.","affiliations":[],"preferred":false,"id":414874,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029593,"text":"70029593 - 2005 - Water level dynamics in wetlands and nesting success of Black Terns in Maine","interactions":[],"lastModifiedDate":"2022-06-06T14:43:38.310776","indexId":"70029593","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3731,"text":"Waterbirds","onlineIssn":"19385390","printIssn":"15244695","active":true,"publicationSubtype":{"id":10}},"title":"Water level dynamics in wetlands and nesting success of Black Terns in Maine","docAbstract":"<p><span>The Black Tern (</span><i><span class=\"genus-species\">Chlidonias niger</span></i><span>) nests in freshwater wetlands that are prone to water level fluctuations, and nest losses to flooding are common. We examined temporal patterns in water levels at six sites with Black Tern colonies in Maine and determined probabilities of flood events and associated nest loss at Douglas Pond, the location of the largest breeding colony. Daily precipitation data from weather stations and water flow data from a flow gauge below Douglas Pond were obtained for 1960-1999. Information on nest losses from three floods at Douglas Pond in 1997-1999 were used to characterize small (6% nest loss), medium (56% nest loss) and large (94% nest loss) flood events, and we calculated probabilities of these three levels of flooding occurring at Douglas Pond using historic water levels data. Water levels generally decreased gradually during the nesting season at colony sites, except at Douglas Pond where water levels fluctuated substantially in response to rain events. Annual probabilities of small, medium, and large flood events were 68%, 35%, and 13% for nests initiated during 23 May-12 July, with similar probabilities for early (23 May-12 June) and late (13 June-12 July) periods. An index of potential nest loss indicated that medium floods at Douglas Pond had the greatest potential effect on nest success because they occurred relatively frequently and inundated large proportions of nests. Nest losses at other colonies were estimated to be approximately 30% of those at Douglas Pond. Nest losses to flooding appear to be common for the Black Tern in Maine and related to spring precipitation patterns, but ultimate effects on breeding productivity are uncertain.</span></p>","language":"English","publisher":"The Waterbird Society","doi":"10.1675/1524-4695(2005)028[0181:WLDIWA]2.0.CO;2","usgsCitation":"Gilbert, A.T., and Servello, F.A., 2005, Water level dynamics in wetlands and nesting success of Black Terns in Maine: Waterbirds, v. 28, no. 2, p. 181-187, https://doi.org/10.1675/1524-4695(2005)028[0181:WLDIWA]2.0.CO;2.","productDescription":"7 p.","startPage":"181","endPage":"187","numberOfPages":"7","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":237497,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maine","otherGeospatial":"Messalonskee Lake, Sebastiscook River watershed","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -69.80506896972656,\n              44.43672160879806\n            ],\n            [\n              -69.76181030273438,\n              44.47495104782301\n            ],\n            [\n              -69.77005004882812,\n              44.48621905301396\n            ],\n            [\n              -69.70207214355469,\n              44.549377532663684\n            ],\n            [\n              -69.71855163574217,\n              44.551824157594105\n            ],\n            [\n              -69.79476928710938,\n              44.50091318061943\n            ],\n            [\n              -69.82978820800781,\n              44.459270203098846\n            ],\n            [\n              -69.83596801757812,\n              44.43819243462858\n            ],\n            [\n              -69.80506896972656,\n              44.43672160879806\n            ]\n          ]\n        ]\n      }\n    },\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -69.46105957031249,\n              44.94681940731857\n            ],\n            [\n              -69.33952331542969,\n              45.02695045318546\n            ],\n            [\n              -69.16030883789062,\n              45.08709642547449\n            ],\n            [\n              -69.20906066894531,\n              45.125866704733575\n            ],\n            [\n              -69.46929931640624,\n              45.06042658364084\n            ],\n            [\n              -69.59014892578125,\n              44.91668060637917\n            ],\n            [\n              -69.39651489257812,\n              44.772574139128416\n            ],\n            [\n              -69.33952331542969,\n              44.75307264365521\n            ],\n            [\n              -69.31686401367188,\n              44.79304362450304\n            ],\n            [\n              -69.46105957031249,\n              44.94681940731857\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"28","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc7f6e4b08c986b32c6f3","contributors":{"authors":[{"text":"Gilbert, Andrew T.","contributorId":100974,"corporation":false,"usgs":true,"family":"Gilbert","given":"Andrew","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":423381,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Servello, F. A.","contributorId":7804,"corporation":false,"usgs":false,"family":"Servello","given":"F.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":423380,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70027712,"text":"70027712 - 2005 - Distribution and abundance of nonnative fishes in streams of the western United States","interactions":[],"lastModifiedDate":"2012-03-12T17:20:50","indexId":"70027712","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","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":"Distribution and abundance of nonnative fishes in streams of the western United States","docAbstract":"This report presents data from one of the largest standardized stream surveys conducted in he western United States, which shows that one of every four individual fish in streams of 12 western states are nonnative. The states surveyed included Arizona, California, Colorado, Idaho, Montana, Nevada, North Dakota, Oregon, South Dakota, Utah, Washington, and Wyoming. The most widely distributed and abundant nonnative fishes in the western USA were brook trout Salvelinus fontinalis, brown trout Salmo trutta, rainbow trout Oncorhynchus mykiss, common carp Cyprinus carpio, smallmouth bass Micropterus dolomieu, largemouth bass M. salmoides, green sunfish Lepomis cyanellus, fathead minnow Pimephales promelas, yellow perch Percaflavescens, yellow bullhead Ameiurus natalis, cutthroat trout O. clarkii, western mosquitofish Gambusia affinis, golden shiner Notemigonus crysoleucas, channel catfish Ictalurus punctatus, and red shiner Cyprinella lutrensis. The greatest abundance and distribution of nonnative fishes was in interior states, and the most common nonnatives were introduced for angling. Nonnative fishes were widespread in pristine to highly disturbed streams influenced by all types of land use practices. We present ranges in water temperature, flow, stream order, riparian cover, human disturbance, and other environmental conditions where the 10 most common introduced species were found. Of the total western U.S. stream length bearing fish, 50.1% contained nonnative fishes while 17.9% contained physical environment that was ranked highly or moderately disturbed by humans. Introduced fishes can adversely affect stream communities, and they are much more widespread in western U.S. streams than habitat destruction. The widespread distribution and high relative abundance of nonnative fishes and their documented negative effects suggest their management and control should elicit at least as much attention as habitat preservation in the protection of native western U.S. stream biota. ?? Copyright by the American Fisheries Society 2005.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"North American Journal of Fisheries Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/M05-037.1","issn":"02755947","usgsCitation":"Schade, C., and Bonar, S.A., 2005, Distribution and abundance of nonnative fishes in streams of the western United States: North American Journal of Fisheries Management, v. 25, no. 4, p. 1386-1394, https://doi.org/10.1577/M05-037.1.","startPage":"1386","endPage":"1394","numberOfPages":"9","costCenters":[],"links":[{"id":477880,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1577/m05-037.1","text":"Publisher Index Page"},{"id":237957,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":210887,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/M05-037.1"}],"volume":"25","issue":"4","noUsgsAuthors":false,"publicationDate":"2005-11-01","publicationStatus":"PW","scienceBaseUri":"505a026ee4b0c8380cd50049","contributors":{"authors":[{"text":"Schade, C.B.","contributorId":82119,"corporation":false,"usgs":true,"family":"Schade","given":"C.B.","email":"","affiliations":[],"preferred":false,"id":414873,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bonar, Scott A.","contributorId":79617,"corporation":false,"usgs":true,"family":"Bonar","given":"Scott","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":414872,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70027711,"text":"70027711 - 2005 - Determinants of woody cover in African savannas","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70027711","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2840,"text":"Nature","active":true,"publicationSubtype":{"id":10}},"title":"Determinants of woody cover in African savannas","docAbstract":"Savannas are globally important ecosystems of great significance to human economies. In these biomes, which are characterized by the co-dominance of trees and grasses, woody cover is a chief determinant of ecosystem properties 1-3. The availability of resources (water, nutrients) and disturbance regimes (fire, herbivory) are thought to be important in regulating woody cover1,2,4,5, but perceptions differ on which of these are the primary drivers of savanna structure. Here we show, using data from 854 sites across Africa, that maximum woody cover in savannas receiving a mean annual precipitation (MAP) of less than ???650 mm is constrained by, and increases linearly with, MAP. These arid and semi-arid savannas may be considered 'stable' systems in which water constrains woody cover and permits grasses to coexist, while fire, herbivory and soil properties interact to reduce woody cover below the MAP-controlled upper bound. Above a MAP of ???650 mm, savannas are 'unstable' systems in which MAP is sufficient for woody canopy closure, and disturbances (fire, herbivory) are required for the coexistence of trees and grass. These results provide insights into the nature of African savannas and suggest that future changes in precipitation 6 may considerably affect their distribution and dynamics. ?? 2005 Nature Publishing Group.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Nature","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1038/nature04070","issn":"00280836","usgsCitation":"Sankaran, M., Hanan, N., Scholes, R.J., Ratnam, J., Augustine, D., Cade, B., Gignoux, J., Higgins, S., Le, R.X., Ludwig, F., Ardo, J., Banyikwa, F., Bronn, A., Bucini, G., Caylor, K., Coughenour, M., Diouf, A., Ekaya, W., Feral, C., February, E., Frost, P., Hiernaux, P., Hrabar, H., Metzger, K., Prins, H., Ringrose, S., Sea, W., Tews, J., Worden, J., and Zambatis, N., 2005, Determinants of woody cover in African savannas: Nature, v. 438, no. 7069, p. 846-849, https://doi.org/10.1038/nature04070.","startPage":"846","endPage":"849","numberOfPages":"4","costCenters":[],"links":[{"id":499981,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://research.wur.nl/en/publications/determinants-of-woody-cover-in-african-savannas","text":"External Repository"},{"id":211247,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1038/nature04070"},{"id":238503,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"438","issue":"7069","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ff84e4b0c8380cd4f229","contributors":{"authors":[{"text":"Sankaran, M.","contributorId":96475,"corporation":false,"usgs":true,"family":"Sankaran","given":"M.","affiliations":[],"preferred":false,"id":414871,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hanan, N.P.","contributorId":82123,"corporation":false,"usgs":true,"family":"Hanan","given":"N.P.","affiliations":[],"preferred":false,"id":414868,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Scholes, Robert J.","contributorId":73405,"corporation":false,"usgs":false,"family":"Scholes","given":"Robert","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":414865,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ratnam, J.","contributorId":22573,"corporation":false,"usgs":true,"family":"Ratnam","given":"J.","email":"","affiliations":[],"preferred":false,"id":414848,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Augustine, D.J.","contributorId":43563,"corporation":false,"usgs":true,"family":"Augustine","given":"D.J.","email":"","affiliations":[],"preferred":false,"id":414856,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Cade, 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,{"id":70027707,"text":"70027707 - 2005 - Landscape structure and plague occurrence in black-tailed prairie dogs on grasslands of the western USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70027707","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2602,"text":"Landscape Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Landscape structure and plague occurrence in black-tailed prairie dogs on grasslands of the western USA","docAbstract":"Landscape structure influences the abundance and distribution of many species, including pathogens that cause infectious diseases. Black-tailed prairie dogs in the western USA have declined precipitously over the past 100 years, most recently due to grassland conversion and their susceptibility to sylvatic plague. We assembled and analyzed two long-term data sets on plague occurrence in black-tailed prairie dogs to explore the hypotheses that plague occurrence is associated with colony characteristics and landscape context. Our two study areas (Boulder County, Colorado, and Phillips County, Montana) differed markedly in degree of urbanization and other landscape characteristics. In both study areas, we found associations between plague occurrence and landscape and colony characteristics such as the amount of roads, streams and lakes surrounding a prairie dog colony, the area covered by the colony and its neighbors, and the distance to the nearest plague-positive colony. Logistic regression models were similar between the two study areas, with the best models predicting positive effects of proximity to plague-positive colonies and negative effects of road, stream and lake cover on plague occurrence. Taken together, these results suggest that roads, streams and lakes may serve as barriers to plague in black-tailed prairie dog colonies by affecting movement of or habitat quality for plague hosts or for fleas that serve as vectors for the pathogen. The similarity in plague correlates between urban and rural study areas suggests that the correlates of plague are not altered by uniquely urban stressors. ?? Springer 2005.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Landscape Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10980-005-4617-5","issn":"09212973","usgsCitation":"Collinge, S., Johnson, W., Ray, C., Matchett, R., Grensten, J., Cully, J., Gage, K., Kosoy, M., Loye, J., and Martin, A., 2005, Landscape structure and plague occurrence in black-tailed prairie dogs on grasslands of the western USA: Landscape Ecology, v. 20, no. 8, p. 941-955, https://doi.org/10.1007/s10980-005-4617-5.","startPage":"941","endPage":"955","numberOfPages":"15","costCenters":[],"links":[{"id":238426,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211199,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10980-005-4617-5"}],"volume":"20","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a441ee4b0c8380cd66893","contributors":{"authors":[{"text":"Collinge, S.K.","contributorId":58832,"corporation":false,"usgs":true,"family":"Collinge","given":"S.K.","email":"","affiliations":[],"preferred":false,"id":414830,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, W.C.","contributorId":68003,"corporation":false,"usgs":true,"family":"Johnson","given":"W.C.","email":"","affiliations":[],"preferred":false,"id":414831,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ray, C.","contributorId":40758,"corporation":false,"usgs":true,"family":"Ray","given":"C.","email":"","affiliations":[],"preferred":false,"id":414828,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Matchett, R.","contributorId":92482,"corporation":false,"usgs":true,"family":"Matchett","given":"R.","email":"","affiliations":[],"preferred":false,"id":414833,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Grensten, J.","contributorId":29196,"corporation":false,"usgs":true,"family":"Grensten","given":"J.","email":"","affiliations":[],"preferred":false,"id":414827,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Cully, J.F. 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,{"id":70027680,"text":"70027680 - 2005 - Can we estimate total magnetization directions from aeromagnetic data using Helbig's integrals?","interactions":[],"lastModifiedDate":"2021-07-02T16:03:18.204151","indexId":"70027680","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1430,"text":"Earth, Planets and Space","active":true,"publicationSubtype":{"id":10}},"title":"Can we estimate total magnetization directions from aeromagnetic data using Helbig's integrals?","docAbstract":"<p><span>An algorithm that implements Helbig’s (1963) integrals for estimating the vector components (</span><i>m</i><sub>x</sub><span>,&nbsp;</span><i>m</i><sub>y</sub><span>,&nbsp;</span><i>m</i><sub>z</sub><span>) of the magnetic dipole moment from the first order moments of the vector magnetic field components (Δ</span><i>X</i><span>, Δ</span><i>Y</i><span>, Δ</span><i>Z</i><span>) is tested on real and synthetic data. After a grid of total field aeromagnetic data is converted to vector component grids using Fourier filtering, Helbig’s infinite integrals are evaluated as finite integrals in small moving windows using a quadrature algorithm based on the 2-D trapezoidal rule. Prior to integration, best-fit planar surfaces must be removed from the component data within the data windows in order to make the results independent of the coordinate system origin. Two different approaches are described for interpreting the results of the integration. In the “direct” method, results from pairs of different window sizes are compared to identify grid nodes where the angular difference between solutions is small. These solutions provide valid estimates of total magnetization directions for compact sources such as spheres or dipoles, but not for horizontally elongated or 2-D sources. In the “indirect” method, which is more forgiving of source geometry, results of the quadrature analysis are scanned for solutions that are parallel to a specified total magnetization direction.</span></p>","language":"English","publisher":"Springer","doi":"10.1186/BF03351848","usgsCitation":"Phillips, J., 2005, Can we estimate total magnetization directions from aeromagnetic data using Helbig's integrals?: Earth, Planets and Space, v. 57, no. 8, p. 681-689, https://doi.org/10.1186/BF03351848.","productDescription":"9 p.","startPage":"681","endPage":"689","numberOfPages":"9","costCenters":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":477964,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1186/bf03351848","text":"Publisher Index Page"},{"id":237956,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"57","issue":"8","noUsgsAuthors":false,"publicationDate":"2014-06-20","publicationStatus":"PW","scienceBaseUri":"5059f33be4b0c8380cd4b69f","contributors":{"authors":[{"text":"Phillips, Jeffrey 0000-0002-6459-2821 jeff@usgs.gov","orcid":"https://orcid.org/0000-0002-6459-2821","contributorId":127453,"corporation":false,"usgs":true,"family":"Phillips","given":"Jeffrey","email":"jeff@usgs.gov","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":414697,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70027678,"text":"70027678 - 2005 - Phylogeographic patterns of Hawaiian Megalagrion damselflies (Odonata: Coenagrionidae) correlate with Pleistocene island boundaries","interactions":[],"lastModifiedDate":"2012-03-12T17:20:49","indexId":"70027678","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2774,"text":"Molecular Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Phylogeographic patterns of Hawaiian Megalagrion damselflies (Odonata: Coenagrionidae) correlate with Pleistocene island boundaries","docAbstract":"The Pleistocene geological history of the Hawaiian Islands is becoming well understood. Numerous predictions about the influence of this history on the genetic diversity of Hawaiian organisms have been made, including the idea that changing sea levels would lead to the genetic differentiation of populations isolated on individual volcanoes during high sea stands. Here, we analyse DNA sequence data from two closely related, endemic Hawaiian damselfly species in order to test these predictions, and generate novel insights into the effects of Pleistocene glaciation and climate change on island organisms. Megalagrion xanthomelas and Megalagrion pacificum are currently restricted to five islands, including three islands of the Maui Nui super-island complex (Molokai, Lanai, and Maui) that were connected during periods of Pleistocene glaciation, and Hawaii island, which has never been subdivided. Maui Nui and Hawaii are effectively a controlled, natural experiment on the genetic effects of Pleistocene sea level change. We confirm well-defined morphological species boundaries using data from the nuclear EF-1?? gene and show that the species are reciprocally monophyletic. We perform phylogeographic analyses of 663 base pairs (bp) of cytochrome oxidase subunit II (COII) gene sequence data from 157 individuals representing 25 populations. Our results point to the importance of Pleistocene land bridges and historical island habitat availability in maintaining inter-island gene flow. We also propose that repeated bottlenecks on Maui Nui caused by sea level change and restricted habitat availability are likely responsible for low genetic diversity there. An island analogue to northern genetic purity and southern diversity is proposed, whereby islands with little suitable habitat exhibit genetic purity while islands with more exhibit genetic diversity. ?? 2005 Blackwell Publishing Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Molecular Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1365-294X.2005.02669.x","issn":"09621083","usgsCitation":"Jordan, S., Simon, C., Foote, D., and Englund, R., 2005, Phylogeographic patterns of Hawaiian Megalagrion damselflies (Odonata: Coenagrionidae) correlate with Pleistocene island boundaries: Molecular Ecology, v. 14, no. 11, p. 3457-3470, https://doi.org/10.1111/j.1365-294X.2005.02669.x.","startPage":"3457","endPage":"3470","numberOfPages":"14","costCenters":[],"links":[{"id":210886,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-294X.2005.02669.x"},{"id":237954,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"14","issue":"11","noUsgsAuthors":false,"publicationDate":"2005-08-10","publicationStatus":"PW","scienceBaseUri":"505a7a58e4b0c8380cd78e81","contributors":{"authors":[{"text":"Jordan, Stephen A.","contributorId":95672,"corporation":false,"usgs":false,"family":"Jordan","given":"Stephen A.","affiliations":[{"id":6922,"text":"University of Rhode Island","active":true,"usgs":false}],"preferred":false,"id":414692,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Simon, C.","contributorId":24559,"corporation":false,"usgs":true,"family":"Simon","given":"C.","email":"","affiliations":[],"preferred":false,"id":414689,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Foote, D.","contributorId":94823,"corporation":false,"usgs":true,"family":"Foote","given":"D.","affiliations":[],"preferred":false,"id":414691,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Englund, R.A.","contributorId":37950,"corporation":false,"usgs":true,"family":"Englund","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":414690,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70027673,"text":"70027673 - 2005 - The Ames MER microscopic imager toolkit","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70027673","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"The Ames MER microscopic imager toolkit","docAbstract":"12The Mars Exploration Rovers, Spirit and Opportunity, have spent several successful months on Mars, returning gigabytes of images and spectral data to scientists on Earth. One of the instruments on the MER rovers, the Athena Microscopic Imager (MI), is a fixed focus, megapixel camera providing a ??3mm depth of field and a 31??31mm field of view at a working distance of 63 mm from the lens to the object being imaged. In order to maximize the science return from this instrument, we developed the Ames MI Toolkit and supported its use during the primary mission. The MI Toolkit is a set of programs that operate on collections of MI images, with the goal of making the data more understandable to the scientists on the ground. Because of the limited depth of field of the camera, and the often highly variable topography of the terrain being imaged, MI images of a given rock are often taken as a stack, with the Instrument Deployment Device (IDD) moving along a computed normal vector, pausing every few millimeters for the MI to acquire an image. The MI Toolkit provides image registration and focal section merging, which combine these images to form a single, maximally in-focus image, while compensating for changes in lighting as well as parallax due to the motion of the camera. The MI Toolkit also provides a 3-D reconstruction of the surface being imaged using stereo and can embed 2-D MI images as texture maps into 3-D meshes produced by other imagers on board the rover to provide context. The 2-D images and 3-D meshes output from the Toolkit are easily viewed by scientists using other mission tools, such as Viz or the MI Browser.This paper describes the MI Toolkit in detail, as well as our experience using it with scientists at JPL during the primary MER mission. ?? 2005 IEEE.","largerWorkTitle":"IEEE Aerospace Conference Proceedings","conferenceTitle":"2005 IEEE Aerospace Conference","conferenceDate":"5 March 2005 through 12 March 2005","conferenceLocation":"Big Sky, MT","language":"English","doi":"10.1109/AERO.2005.1559384","issn":"1095323X","isbn":"0780388704; 9780780388703","usgsCitation":"Sargent, R., Deans, M., Kunz, C., Sims, M., and Herkenhoff, K., 2005, The Ames MER microscopic imager toolkit, <i>in</i> IEEE Aerospace Conference Proceedings, v. 2005, Big Sky, MT, 5 March 2005 through 12 March 2005, https://doi.org/10.1109/AERO.2005.1559384.","costCenters":[],"links":[{"id":477738,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://hdl.handle.net/2060/20050157066","text":"External Repository"},{"id":211228,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1109/AERO.2005.1559384"},{"id":238461,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2005","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba67ee4b08c986b321178","contributors":{"authors":[{"text":"Sargent, R.","contributorId":98532,"corporation":false,"usgs":true,"family":"Sargent","given":"R.","email":"","affiliations":[],"preferred":false,"id":414678,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Deans, Matthew","contributorId":56437,"corporation":false,"usgs":false,"family":"Deans","given":"Matthew","email":"","affiliations":[{"id":13302,"text":"11NASA Ames Research Center, Moffett Field, California 94035","active":true,"usgs":false}],"preferred":false,"id":414676,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kunz, C.","contributorId":67720,"corporation":false,"usgs":true,"family":"Kunz","given":"C.","email":"","affiliations":[],"preferred":false,"id":414677,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sims, M.","contributorId":52695,"corporation":false,"usgs":true,"family":"Sims","given":"M.","affiliations":[],"preferred":false,"id":414675,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Herkenhoff, K.","contributorId":17352,"corporation":false,"usgs":true,"family":"Herkenhoff","given":"K.","affiliations":[],"preferred":false,"id":414674,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029512,"text":"70029512 - 2005 - Low summer water temperatures influence occurrence of naturalized salmonids across a mountain watershed","interactions":[],"lastModifiedDate":"2012-03-12T17:20:53","indexId":"70029512","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","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":"Low summer water temperatures influence occurrence of naturalized salmonids across a mountain watershed","docAbstract":"We investigated relationships between the absence of salmonids and low summer water temperatures across a 150-km2 Rocky Mountain watershed. A model predicting maximum July water temperature (MJT) from measurements of perennial stream length, wetted width, and midrange basin elevation was developed from temperature data obtained at 20 sites across the watershed. The model was used to predict MJT in 75 reaches across the watershed where salmonids were sampled. The lowest predicted MJT in reaches where age-0 and juvenile-adult brook trout Salvelinus fontinalis were observed was 9??C. The lowest predicted MJT in reaches where age-0 progeny of the genus Oncorhynchus spp. (i.e., rainbow trout O. mykiss or cutthroat trout O. clarkii) were observed was 13??C and where Oncorhynchus spp. adults where observed was 12??C. The probability of occurrence of both age-0 and adult brook trout and Oncorhynchus spp. increased as MJT increased above these thresholds. Our results indicate that low MJT in some portions of a mountain watershed can be related to the absence of salmonids. Consequently, data on MJT may provide managers with a means of assessing where summer water temperatures are not suitable for establishment of naturalized salmonid populations. ?? Copyright by the American Fisheries Society 2005.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"North American Journal of Fisheries Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/M04-167.1","issn":"02755947","usgsCitation":"Mullner, S., and Hubert, W., 2005, Low summer water temperatures influence occurrence of naturalized salmonids across a mountain watershed: North American Journal of Fisheries Management, v. 25, no. 3, p. 1034-1040, https://doi.org/10.1577/M04-167.1.","startPage":"1034","endPage":"1040","numberOfPages":"7","costCenters":[],"links":[{"id":210459,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/M04-167.1"},{"id":237383,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"25","issue":"3","noUsgsAuthors":false,"publicationDate":"2005-08-01","publicationStatus":"PW","scienceBaseUri":"505a4a0ee4b0c8380cd68ac7","contributors":{"authors":[{"text":"Mullner, S.A.","contributorId":30429,"corporation":false,"usgs":true,"family":"Mullner","given":"S.A.","email":"","affiliations":[],"preferred":false,"id":423057,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hubert, W.A.","contributorId":12822,"corporation":false,"usgs":true,"family":"Hubert","given":"W.A.","email":"","affiliations":[],"preferred":false,"id":423056,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029510,"text":"70029510 - 2005 - Identifying spawning behavior in Pacific halibut (<i>Hippoglossus stenolepis</i>) using electronic tags","interactions":[],"lastModifiedDate":"2016-06-20T09:58:58","indexId":"70029510","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1528,"text":"Environmental Biology of Fishes","active":true,"publicationSubtype":{"id":10}},"title":"Identifying spawning behavior in Pacific halibut (<i>Hippoglossus stenolepis</i>) using electronic tags","docAbstract":"<p>Identifying spawning behavior in Pacific halibut, Hippoglossus stenolepis, is particularly challenging because they occupy a deep, remote environment during the spawning season. To identify spawning events, a method is needed in which direct observation by humans is not employed. Spawning behavior of seven other flatfish, species has been directly observed in their natural environment by investigators using SCUBA. All of these flatfish species display almost identical spawning behavior that follows a routine. Therefore, it is reasonable to believe that this spawning behavior occurs in other flatfish species, including Pacific halibut. As part of a larger study, we recaptured two Pacific halibut on which Pop-up Archival Transmitting (PAT) tags had been attached during the winter spawning season. Because the tags were physically retrieved, we were able to collect minute-by-minute depth records for 135 and 155 days. We used these depth data to tentatively identify spawning events. On seven separate occasions between 20 January 2001 and 9 February 2001, one fish displayed a conspicuous routine only seen during the spawning season of Pacific halibut and the routine parallels the actions of other spawning flatfish directly observed by humans using SCUBA. Therefore, we propose this routine represents spawning behavior in Pacific halibut. The second tagged fish did not display the conspicuous routine, thus challenging the assumption that Pacific halibut are annual spawners. PAT tags may prove to be a useful tool for identifying spawning events of Pacific halibut, and that knowledge may be used for improved management in the future.&nbsp;</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Biology of Fishes","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Springer","doi":"10.1007/s10641-005-3216-2","issn":"03781909","usgsCitation":"Seitz, A., Norcross, B.L., Wilson, D., and Nielsen, J., 2005, Identifying spawning behavior in Pacific halibut (<i>Hippoglossus stenolepis</i>) using electronic tags: Environmental Biology of Fishes, v. 73, no. 4, p. 445-451, https://doi.org/10.1007/s10641-005-3216-2.","productDescription":"7 p.","startPage":"445","endPage":"451","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":237926,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":210872,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10641-005-3216-2"}],"volume":"73","issue":"4","noUsgsAuthors":false,"publicationDate":"2005-08-01","publicationStatus":"PW","scienceBaseUri":"505a3858e4b0c8380cd61534","contributors":{"authors":[{"text":"Seitz, A.C.","contributorId":71756,"corporation":false,"usgs":true,"family":"Seitz","given":"A.C.","email":"","affiliations":[],"preferred":false,"id":423051,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Norcross, Brenda L.","contributorId":21497,"corporation":false,"usgs":false,"family":"Norcross","given":"Brenda","email":"","middleInitial":"L.","affiliations":[{"id":7211,"text":"University of Alaska, Fairbanks","active":true,"usgs":false}],"preferred":false,"id":423049,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wilson, D.","contributorId":30353,"corporation":false,"usgs":true,"family":"Wilson","given":"D.","affiliations":[],"preferred":false,"id":423050,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nielsen, J.L.","contributorId":105665,"corporation":false,"usgs":true,"family":"Nielsen","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":423052,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029504,"text":"70029504 - 2005 - LogCauchy, log-sech and lognormal distributions of species abundances in forest communities","interactions":[],"lastModifiedDate":"2012-03-12T17:20:46","indexId":"70029504","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1458,"text":"Ecological Modelling","active":true,"publicationSubtype":{"id":10}},"title":"LogCauchy, log-sech and lognormal distributions of species abundances in forest communities","docAbstract":"Species-abundance (SA) pattern is one of the most fundamental aspects of biological community structure, providing important information regarding species richness, species-area relation and succession. To better describe the SA distribution (SAD) in a community, based on the widely used lognormal (LN) distribution model with exp(-x2) roll-off on Preston's octave scale, this study proposed two additional models, logCauchy (LC) and log-sech (LS), respectively with roll-offs of simple x-2 and e-x. The estimation of the theoretical total number of species in the whole community, S*, including very rare species not yet collected in sample, was derived from the left-truncation of each distribution. We fitted these three models by Levenberg-Marquardt nonlinear regression and measured the model fit to the data using coefficient of determination of regression, parameters' t-test and distribution's Kolmogorov-Smirnov (KS) test. Examining the SA data from six forest communities (five in lower subtropics and one in tropics), we found that: (1) on a log scale, all three models that are bell-shaped and left-truncated statistically adequately fitted the observed SADs, and the LC and LS did better than the LN; (2) from each model and for each community the S* values estimated by the integral and summation methods were almost equal, allowing us to estimate S* using a simple integral formula and to estimate its asymptotic confidence internals by regression of a transformed model containing it; (3) following the order of LC, LS, and LN, the fitted distributions became lower in the peak, less concave in the side, and shorter in the tail, and overall the LC tended to overestimate, the LN tended to underestimate, while the LS was intermediate but slightly tended to underestimate, the observed SADs (particularly the number of common species in the right tail); (4) the six communities had some similar structural properties such as following similar distribution models, having a common modal octave and a similar proportion of common species. We suggested that what follows the LN distribution should follow (or better follow) the LC and LS, and that the LC, LS and LN distributions represent a \"sequential distribution set\" in which one can find a best fit to the observed SAD. ?? 2004 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecological Modelling","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.ecolmodel.2004.10.011","issn":"03043800","usgsCitation":"Yin, Z., Peng, S., Ren, H., Guo, Q., and Chen, Z., 2005, LogCauchy, log-sech and lognormal distributions of species abundances in forest communities: Ecological Modelling, v. 184, no. 2-4, p. 329-340, https://doi.org/10.1016/j.ecolmodel.2004.10.011.","startPage":"329","endPage":"340","numberOfPages":"12","costCenters":[],"links":[{"id":210793,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.ecolmodel.2004.10.011"},{"id":237819,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"184","issue":"2-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4945e4b0c8380cd68498","contributors":{"authors":[{"text":"Yin, Z.-Y.","contributorId":8278,"corporation":false,"usgs":true,"family":"Yin","given":"Z.-Y.","email":"","affiliations":[],"preferred":false,"id":423023,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Peng, S.-L.","contributorId":85762,"corporation":false,"usgs":true,"family":"Peng","given":"S.-L.","email":"","affiliations":[],"preferred":false,"id":423027,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ren, H.","contributorId":45273,"corporation":false,"usgs":true,"family":"Ren","given":"H.","email":"","affiliations":[],"preferred":false,"id":423024,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Guo, Q.","contributorId":67039,"corporation":false,"usgs":true,"family":"Guo","given":"Q.","email":"","affiliations":[],"preferred":false,"id":423026,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Chen, Z.-H.","contributorId":57261,"corporation":false,"usgs":true,"family":"Chen","given":"Z.-H.","email":"","affiliations":[],"preferred":false,"id":423025,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029495,"text":"70029495 - 2005 - Selenium in the Blackfoot, Salt, and Bear River Watersheds","interactions":[],"lastModifiedDate":"2017-05-22T15:45:32","indexId":"70029495","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1552,"text":"Environmental Monitoring and Assessment","onlineIssn":"1573-2959","printIssn":"0167-6369","active":true,"publicationSubtype":{"id":10}},"title":"Selenium in the Blackfoot, Salt, and Bear River Watersheds","docAbstract":"<p><span>Nine stream sites in the Blackfoot River, Salt River, and Bear River watersheds in southeast Idaho, USA were sampled in May 2001 for water, surficial sediment, aquatic plants, aquatic invertebrates, and fish. Selenium was measured in these aquatic ecosystem components, and a hazard assessment was performed on the data. Water quality characteristics such as pH, hardness, and specific conductance were relatively uniform among the nine sites. Of the aquatic components assessed, water was the least contaminated with selenium because measured concentrations were below the national water quality criterion of 5 μ g/L at eight of the nine sites. In contrast, selenium was elevated in sediment, aquatic plants, aquatic invertebrates, and fish from several sites, suggesting deposition in sediments and food web cycling through plants and invertebrates. Selenium was elevated to concentrations of concern in fish at eight sites (&gt; 4 μ g/g in whole body). A hazard assessment of selenium in the aquatic environment suggested a moderate hazard at upper Angus Creek (UAC) and Smoky Creek (SC), and high hazard at Little Blackfoot River (LiB), Blackfoot River gaging station (BGS), State Land Creek (SLC), upper (UGC) and lower Georgetown Creek (LGC), Deer Creek (DC), and Crow Creek (CC). The results of this study indicate that selenium concentrations from the phosphate mining area of southeast Idaho were sufficiently elevated in several ecosystem components to cause adverse effects to aquatic resources in southeastern Idaho.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s10661-005-1618-4","issn":"01676369","usgsCitation":"Hamilton, S.J., and Buhl, K., 2005, Selenium in the Blackfoot, Salt, and Bear River Watersheds: Environmental Monitoring and Assessment, v. 104, no. 1-3, p. 309-339, https://doi.org/10.1007/s10661-005-1618-4.","productDescription":"31 p.","startPage":"309","endPage":"339","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":210680,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10661-005-1618-4"},{"id":237675,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"104","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8cf6e4b08c986b3181e2","contributors":{"authors":[{"text":"Hamilton, S. J.","contributorId":27817,"corporation":false,"usgs":false,"family":"Hamilton","given":"S.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":422973,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Buhl, K.J.","contributorId":19728,"corporation":false,"usgs":true,"family":"Buhl","given":"K.J.","email":"","affiliations":[],"preferred":false,"id":422972,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029489,"text":"70029489 - 2005 - Three-dimensional geologic map of the Hayward fault, northern California: Correlation of rock unites with variations in seismicity, creep rate, and fault dip","interactions":[],"lastModifiedDate":"2012-03-12T17:20:52","indexId":"70029489","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Three-dimensional geologic map of the Hayward fault, northern California: Correlation of rock unites with variations in seismicity, creep rate, and fault dip","docAbstract":"In order to better understand mechanisms of active faults, we studied relationships between fault behavior and rock units along the Hayward fault using a three-dimensional geologic map. The three-dimensional map-constructed from hypocenters, potential field data, and surface map data-provided a geologic map of each fault surface, showing rock units on either side of the fault truncated by the fault. The two fault-surface maps were superimposed to create a rock-rock juxtaposition map. The three maps were compared with seismicity, including aseismic patches, surface creep, and fault dip along the fault, by using visuallization software to explore three-dimensional relationships. Fault behavior appears to be correlated to the fault-surface maps, but not to the rock-rock juxtaposition map, suggesting that properties of individual wall-rock units, including rock strength, play an important role in fault behavior. Although preliminary, these results suggest that any attempt to understand the detailed distribution of earthquakes or creep along a fault should include consideration of the rock types that abut the fault surface, including the incorporation of observations of physical properties of the rock bodies that intersect the fault at depth. ?? 2005 Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/G21435.1","issn":"00917613","usgsCitation":"Graymer, R., Ponce, D., Jachens, R., Simpson, R., Phelps, G.A., and Wentworth, C., 2005, Three-dimensional geologic map of the Hayward fault, northern California: Correlation of rock unites with variations in seismicity, creep rate, and fault dip: Geology, v. 33, no. 6, p. 521-524, https://doi.org/10.1130/G21435.1.","startPage":"521","endPage":"524","numberOfPages":"4","costCenters":[],"links":[{"id":210595,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G21435.1"},{"id":237565,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb328e4b08c986b325c01","contributors":{"authors":[{"text":"Graymer, R. W.","contributorId":21174,"corporation":false,"usgs":true,"family":"Graymer","given":"R. W.","affiliations":[],"preferred":false,"id":422948,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ponce, D. A. 0000-0003-4785-7354","orcid":"https://orcid.org/0000-0003-4785-7354","contributorId":104019,"corporation":false,"usgs":true,"family":"Ponce","given":"D. A.","affiliations":[],"preferred":false,"id":422952,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jachens, R.C.","contributorId":55433,"corporation":false,"usgs":true,"family":"Jachens","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":422949,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Simpson, R.W.","contributorId":76738,"corporation":false,"usgs":true,"family":"Simpson","given":"R.W.","email":"","affiliations":[],"preferred":false,"id":422951,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Phelps, G. A.","contributorId":67107,"corporation":false,"usgs":true,"family":"Phelps","given":"G.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":422950,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Wentworth, C. M. 0000-0003-2569-569X","orcid":"https://orcid.org/0000-0003-2569-569X","contributorId":106466,"corporation":false,"usgs":true,"family":"Wentworth","given":"C. M.","affiliations":[],"preferred":false,"id":422953,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70029482,"text":"70029482 - 2005 - River nutrient loads and catchment size","interactions":[],"lastModifiedDate":"2012-03-12T17:20:52","indexId":"70029482","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1007,"text":"Biogeochemistry","active":true,"publicationSubtype":{"id":10}},"title":"River nutrient loads and catchment size","docAbstract":"We have used a total of 496 sample sites to calibrate a simple regression model for calculating dissolved inorganic nutrient fluxes via runoff to the ocean. The regression uses the logarithms of runoff and human population as the independent variables and estimates the logarithms of dissolved inorganic nitrogen and phosphorus loading with R 2 values near 0.8. This predictive capability is about the same as has been derived for total nutrient loading with process-based models requiring more detailed information on independent variables. We conclude that population and runoff are robust proxies for the more detailed application, landscape modification, and in-stream processing estimated by more process-based models. The regression model has then been applied to a demonstration data set of 1353 river catchments draining to the sea from the North American continent south of the Canadian border. The geographic extents of these basins were extracted from a 1-km digital elevation model for North America, and both runoff and population were estimated for each basin. Most of the basins (72% of the total) are smaller than 103 km2, and both runoff and population density are higher and more variable among small basins than among larger ones.While total load to the ocean can probably be adequately estimated from large systems only, analysis of the geographic distribution of nutrient loading requires consideration of the small basins, which can exhibit significant hydrologic and demographic heterogeneity between systems over their range even within the same geographic region. High-resolution regional and local analysis is necessary for environmental assessment and management. ?? Springer 2005.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biogeochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10533-004-6320-z","issn":"01682563","usgsCitation":"Smith, S.V., Swaney, D., Buddemeier, R., Scarsbrook, M., Weatherhead, M., Humborg, C., Eriksson, H., and Hannerz, F., 2005, River nutrient loads and catchment size: Biogeochemistry, v. 75, no. 1, p. 83-107, https://doi.org/10.1007/s10533-004-6320-z.","startPage":"83","endPage":"107","numberOfPages":"25","costCenters":[],"links":[{"id":210511,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10533-004-6320-z"},{"id":237451,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"75","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aadb4e4b0c8380cd86f60","contributors":{"authors":[{"text":"Smith, S. V.","contributorId":89284,"corporation":false,"usgs":true,"family":"Smith","given":"S.","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":422926,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Swaney, D.P.","contributorId":68956,"corporation":false,"usgs":true,"family":"Swaney","given":"D.P.","email":"","affiliations":[],"preferred":false,"id":422924,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Buddemeier, R. W.","contributorId":86492,"corporation":false,"usgs":true,"family":"Buddemeier","given":"R. W.","affiliations":[],"preferred":false,"id":422925,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Scarsbrook, M.R.","contributorId":16212,"corporation":false,"usgs":true,"family":"Scarsbrook","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":422919,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Weatherhead, M.A.","contributorId":55198,"corporation":false,"usgs":true,"family":"Weatherhead","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":422922,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Humborg, Christoph","contributorId":43964,"corporation":false,"usgs":true,"family":"Humborg","given":"Christoph","email":"","affiliations":[],"preferred":false,"id":422920,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Eriksson, H.","contributorId":67280,"corporation":false,"usgs":true,"family":"Eriksson","given":"H.","email":"","affiliations":[],"preferred":false,"id":422923,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Hannerz, F.","contributorId":53154,"corporation":false,"usgs":true,"family":"Hannerz","given":"F.","email":"","affiliations":[],"preferred":false,"id":422921,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70029481,"text":"70029481 - 2005 - Mapping NEHRP VS30 site classes","interactions":[],"lastModifiedDate":"2012-03-12T17:20:52","indexId":"70029481","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1436,"text":"Earthquake Spectra","active":true,"publicationSubtype":{"id":10}},"title":"Mapping NEHRP VS30 site classes","docAbstract":"Site-amplification potential in a 140-km2 area on the eastern shore of San Francisco Bay, California, was mapped with data from 210 seismic cone penetration test (SCPT) soundings. NEHRP VS30 values were computed on a 50-m grid by both taking into account the thickness and using mean values of locally measured shear-wave velocities of shallow geologic units. The resulting map of NEHRP VS30 site classes differs from other published maps that (1) do not include unit thickness and (2) are based on regional compilations of velocity. Although much of the area in the new map is now classified as NEHRP Site Class D, the velocities of the geologic deposits within this area are either near the upper or lower VS30 boundary of Class D. If maps of NEHRP site classes are to be based on geologic maps, velocity distributions of geologic units may need to be considered in the definition of VS30 boundaries of NEHRP site classes. ?? 2005, Earthquake Engineering Research Institute.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Earthquake Spectra","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1193/1.1895726","issn":"87552930","usgsCitation":"Holzer, T., Padovani, A., Bennett, M., Noce, T., and Tinsley, J.C., 2005, Mapping NEHRP VS30 site classes: Earthquake Spectra, v. 21, no. 2, p. 353-370, https://doi.org/10.1193/1.1895726.","startPage":"353","endPage":"370","numberOfPages":"18","costCenters":[],"links":[{"id":237450,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":210510,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1193/1.1895726"}],"volume":"21","issue":"2","noUsgsAuthors":false,"publicationDate":"2005-05-01","publicationStatus":"PW","scienceBaseUri":"505a5047e4b0c8380cd6b591","contributors":{"authors":[{"text":"Holzer, T.L.","contributorId":35739,"corporation":false,"usgs":true,"family":"Holzer","given":"T.L.","email":"","affiliations":[],"preferred":false,"id":422914,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Padovani, A.C.","contributorId":53150,"corporation":false,"usgs":true,"family":"Padovani","given":"A.C.","email":"","affiliations":[],"preferred":false,"id":422916,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bennett, M.J.","contributorId":67504,"corporation":false,"usgs":true,"family":"Bennett","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":422918,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Noce, T.E.","contributorId":54285,"corporation":false,"usgs":true,"family":"Noce","given":"T.E.","email":"","affiliations":[],"preferred":false,"id":422917,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tinsley, J. C. III","contributorId":39777,"corporation":false,"usgs":true,"family":"Tinsley","given":"J.","suffix":"III","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":422915,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029480,"text":"70029480 - 2005 - Solute transport and storage mechanisms in wetlands of the Everglades, south Florida","interactions":[],"lastModifiedDate":"2018-04-02T15:52:48","indexId":"70029480","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Solute transport and storage mechanisms in wetlands of the Everglades, south Florida","docAbstract":"<p><span>Solute transport and storage processes in wetlands play an important role in biogeochemical cycling and in wetland water quality functions. In the wetlands of the Everglades, there are few data or guidelines to characterize transport through the heterogeneous flow environment. Our goal was to conduct a tracer study to help quantify solute exchange between the relatively fast flowing water in the open part of the water column and much more slowly moving water in thick floating vegetation and in the pore water of the underlying peat. We performed a tracer experiment that consisted of a constant‐rate injection of a sodium bromide (NaBr) solution for 22 hours into a 3 m wide, open‐ended flume channel in Everglades National Park. Arrival of the bromide tracer was monitored at an array of surface water and subsurface samplers for 48 hours at a distance of 6.8 m downstream of the injection. A one‐dimensional transport model was used in combination with an optimization code to identify the values of transport parameters that best explained the tracer observations. Parameters included dimensions and mass transfer coefficients describing exchange with both short (hours) and longer (tens of hours) storage zones as well as the average rates of advection and longitudinal dispersion in the open part of the water column (referred to as the “main flow zone”). Comparison with a more detailed set of tracer measurements tested how well the model's storage zones approximated the average characteristics of tracer movement into and out of the layer of thick floating vegetation and the pore water in the underlying peat. The rate at which the relatively fast moving water in the open water column was exchanged with slowly moving water in the layer of floating vegetation and in sediment pore water amounted to 50 and 3% h</span><sup>−1</sup><span>, respectively. Storage processes decreased the depth‐averaged velocity of surface water by 50% relative to the water velocity in the open part of the water column. As a result, flow measurements made with other methods that only work in the open part of the water column (e.g., acoustic Doppler) would have overestimated the true depth‐averaged velocity by a factor of 2. We hypothesize that solute exchange and storage in zones of floating vegetation and peat pore water increase contact time of solutes with biogeochemically active surfaces in this heterogeneous wetland environment.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2004WR003507","usgsCitation":"Harvey, J.W., Saiers, J.E., and Newlin, J.T., 2005, Solute transport and storage mechanisms in wetlands of the Everglades, south Florida: Water Resources Research, v. 41, no. 5, Article W05009; 14 p., https://doi.org/10.1029/2004WR003507.","productDescription":"Article W05009; 14 p.","costCenters":[],"links":[{"id":477753,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2004wr003507","text":"Publisher Index Page"},{"id":237419,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"41","issue":"5","noUsgsAuthors":false,"publicationDate":"2005-05-12","publicationStatus":"PW","scienceBaseUri":"505b9254e4b08c986b319e4b","contributors":{"authors":[{"text":"Harvey, Judson W. 0000-0002-2654-9873 jwharvey@usgs.gov","orcid":"https://orcid.org/0000-0002-2654-9873","contributorId":1796,"corporation":false,"usgs":true,"family":"Harvey","given":"Judson","email":"jwharvey@usgs.gov","middleInitial":"W.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":422911,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Saiers, James E.","contributorId":191842,"corporation":false,"usgs":false,"family":"Saiers","given":"James","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":422912,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Newlin, Jessica T.","contributorId":87214,"corporation":false,"usgs":true,"family":"Newlin","given":"Jessica","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":422913,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029479,"text":"70029479 - 2005 - Wash load and bed-material load transport in the Yellow River","interactions":[],"lastModifiedDate":"2012-03-12T17:20:52","indexId":"70029479","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2338,"text":"Journal of Hydraulic Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Wash load and bed-material load transport in the Yellow River","docAbstract":"It has been the conventional assumption that wash load is supply limited and is only indirectly related to the hydraulics of a river. Hydraulic engineers also assumed that bed-material load concentration is independent of wash load concentration. This paper provides a detailed analysis of the Yellow River sediment transport data to determine whether the above assumptions are true and whether wash load concentration can be computed from the original unit stream power formula and the modified unit stream power formula for sediment-laden flows. A systematic and thorough analysis of 1,160 sets of data collected from 9 gauging stations along the Middle and Lower Yellow River confirmed that the method suggested by the conjunctive use of the two formulas can be used to compute wash load, bed-material load, and total load in the Yellow River with accuracy. Journal of Hydraulic Engineering ?? ASCE.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydraulic Engineering","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1061/(ASCE)0733-9429(2005)131:5(413)","issn":"07339429","usgsCitation":"Yang, C., and Simoes, F., 2005, Wash load and bed-material load transport in the Yellow River: Journal of Hydraulic Engineering, v. 131, no. 5, p. 413-418, https://doi.org/10.1061/(ASCE)0733-9429(2005)131:5(413).","startPage":"413","endPage":"418","numberOfPages":"6","costCenters":[],"links":[{"id":210485,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/(ASCE)0733-9429(2005)131:5(413)"},{"id":237418,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"131","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc3ece4b08c986b32b3f5","contributors":{"authors":[{"text":"Yang, C.T.","contributorId":14629,"corporation":false,"usgs":true,"family":"Yang","given":"C.T.","email":"","affiliations":[],"preferred":false,"id":422909,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Simoes, F.J.M.","contributorId":100181,"corporation":false,"usgs":true,"family":"Simoes","given":"F.J.M.","email":"","affiliations":[],"preferred":false,"id":422910,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029477,"text":"70029477 - 2005 - A universal surface complexation framework for modeling proton binding onto bacterial surfaces in geologic settings","interactions":[],"lastModifiedDate":"2012-03-12T17:20:53","indexId":"70029477","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":732,"text":"American Journal of Science","active":true,"publicationSubtype":{"id":10}},"title":"A universal surface complexation framework for modeling proton binding onto bacterial surfaces in geologic settings","docAbstract":"Adsorption onto bacterial cell walls can significantly affect the speciation and mobility of aqueous metal cations in many geologic settings. However, a unified thermodynamic framework for describing bacterial adsorption reactions does not exist. This problem originates from the numerous approaches that have been chosen for modeling bacterial surface protonation reactions. In this study, we compile all currently available potentiometric titration datasets for individual bacterial species, bacterial consortia, and bacterial cell wall components. Using a consistent, four discrete site, non-electrostatic surface complexation model, we determine total functional group site densities for all suitable datasets, and present an averaged set of 'universal' thermodynamic proton binding and site density parameters for modeling bacterial adsorption reactions in geologic systems. Modeling results demonstrate that the total concentrations of proton-active functional group sites for the 36 bacterial species and consortia tested are remarkably similar, averaging 3.2 ?? 1.0 (1??) ?? 10-4 moles/wet gram. Examination of the uncertainties involved in the development of proton-binding modeling parameters suggests that ignoring factors such as bacterial species, ionic strength, temperature, and growth conditions introduces relatively small error compared to the unavoidable uncertainty associated with the determination of cell abundances in realistic geologic systems. Hence, we propose that reasonable estimates of the extent of bacterial cell wall deprotonation can be made using averaged thermodynamic modeling parameters from all of the experiments that are considered in this study, regardless of bacterial species used, ionic strength, temperature, or growth condition of the experiment. The average site densities for the four discrete sites are 1.1 ?? 0.7 ?? 10-4, 9.1 ?? 3.8 ?? 10-5, 5.3 ?? 2.1 ?? 10-5, and 6.6 ?? 3.0 ?? 10-5 moles/wet gram bacteria for the sites with pKa values of 3.1, 4.7, 6.6, and 9.0, respectively. It is our hope that this thermodynamic framework for modeling bacteria-proton binding reactions will also provide the basis for the development of an internally consistent set of bacteria-metal binding constants. 'Universal' constants for bacteria-metal binding reactions can then be used in conjunction with equilibrium constants for other important metal adsorption and complexation reactions to calculate the overall distribution of metals in realistic geologic systems.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Journal of Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2475/ajs.305.6-8.826","issn":"00029599","usgsCitation":"Borrok, D., Turner, B., and Fein, J., 2005, A universal surface complexation framework for modeling proton binding onto bacterial surfaces in geologic settings: American Journal of Science, v. 305, no. 6-8 SPEC. ISS., p. 826-853, https://doi.org/10.2475/ajs.305.6-8.826.","startPage":"826","endPage":"853","numberOfPages":"28","costCenters":[],"links":[{"id":477812,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2475/ajs.305.6-8.826","text":"Publisher Index Page"},{"id":210458,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2475/ajs.305.6-8.826"},{"id":237381,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"305","issue":"6-8 SPEC. ISS.","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e60de4b0c8380cd47126","contributors":{"authors":[{"text":"Borrok, D.","contributorId":103461,"corporation":false,"usgs":true,"family":"Borrok","given":"D.","email":"","affiliations":[],"preferred":false,"id":422904,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Turner, B.F.","contributorId":34314,"corporation":false,"usgs":true,"family":"Turner","given":"B.F.","email":"","affiliations":[],"preferred":false,"id":422902,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fein, J.B.","contributorId":97257,"corporation":false,"usgs":true,"family":"Fein","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":422903,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
]}