{"pageNumber":"2371","pageRowStart":"59250","pageSize":"25","recordCount":185071,"records":[{"id":70031591,"text":"70031591 - 2007 - Using topographic lidar data to delineate the North Carolina Shoreline","interactions":[],"lastModifiedDate":"2017-10-04T18:58:37","indexId":"70031591","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Using topographic lidar data to delineate the North Carolina Shoreline","docAbstract":"<p>In North Carolina, shoreline change rates are an important component of the state's coastal management program. To enhance methods of measuring shoreline change, the NC Division of Coastal Management (DCM) is considering using mean high water (MHW) shorelines extracted from lidar data together with traditional wet/dry shorelines digitized from aerial photography. To test their compatibility, a wet/dry line and MHW shoreline derived from a concurrent 2004 oceanfront photography and lidar dataset were compared along a distance of 244 km. Results show that the MHW shoreline was seaward of the wet/dry shoreline by 2.82 m on average, and that this offset biased shoreline change rates by an average of 0.05 m/yr. The offset was greatest on low-sloping beaches experiencing higher water levels at the time of photography, but overall was small enough to suggest that the MHW shoreline can be a reliable substitute for the wet/dry shoreline.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","conferenceLocation":"New Orleans, LA","language":"English","publisher":"American Society of Civil Engineers","doi":"10.1061/40926(239)144","isbn":"0784409269; 9780784409268","usgsCitation":"Limber, P., List, J., Warren, J.D., Farris, A., and Weber, K., 2007, Using topographic lidar data to delineate the North Carolina Shoreline, <i>in</i> Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes, New Orleans, LA, p. 1837-1850, https://doi.org/10.1061/40926(239)144.","productDescription":"14 p.","startPage":"1837","endPage":"1850","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":240002,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"North Carolina","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -78.6749,33.841 ], [ -78.6749,36.5882 ], [ -75.46,36.5882 ], [ -75.46,33.841 ], [ -78.6749,33.841 ] ] ] } } ] }","noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"505bc0bae4b08c986b32a2b9","contributors":{"authors":[{"text":"Limber, Patrick W.","contributorId":38904,"corporation":false,"usgs":true,"family":"Limber","given":"Patrick W.","affiliations":[],"preferred":false,"id":432244,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"List, Jeffrey H. jlist@usgs.gov","contributorId":2416,"corporation":false,"usgs":true,"family":"List","given":"Jeffrey H.","email":"jlist@usgs.gov","affiliations":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":false,"id":432241,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Warren, Jeffrey D.","contributorId":21869,"corporation":false,"usgs":true,"family":"Warren","given":"Jeffrey","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":432242,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Farris, Amy S.","contributorId":28075,"corporation":false,"usgs":true,"family":"Farris","given":"Amy S.","affiliations":[],"preferred":false,"id":432243,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Weber, Kathryn M.","contributorId":83387,"corporation":false,"usgs":true,"family":"Weber","given":"Kathryn M.","affiliations":[],"preferred":false,"id":432245,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031590,"text":"70031590 - 2007 - Characterisation and modelling of washover fans","interactions":[],"lastModifiedDate":"2014-08-22T14:16:01","indexId":"70031590","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Characterisation and modelling of washover fans","docAbstract":"<p>Pre- and post-storm topography and aerial photography, collected in regions where new washover fans were formed, were studied to determine the extent of morphologic, vegetative and anthropogenic control on washover shape and extent. When overwash is funnelled through a gap in a dune ridge and then spreads laterally on the back barrier, decelerating and depositing sediment, it forms washover fans. Fans were shown to primarily occur at pre-existing gaps in the foredune. During overwash, these gaps, or overwash throats, widened and deepened. The shape and extent of the fan was shown to depend on not only the pre-storm topography, but also the existence of beach tracks, roads and other anthropogenic influences and vegetation. The cross-shore overwash profile change model by Larson et al. and Donnelly et al. was modified to include pre-storm throat widths and a lateral spreading angle estimated from the pre-storm topography as inputs and tested using cross-shore profiles through the fan centres. These new inputs make the model more generalised, such that the calibrated model is applicable to a wider range of cross-shore profiles.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","conferenceLocation":"New Orleans, LA","language":"English","publisher":"American Society of Civil Engineers","doi":"10.1061/40926(239)162","isbn":"0784409269; 9780784409268","usgsCitation":"Donnelly, C., and Sallenger, A., 2007, Characterisation and modelling of washover fans, <i>in</i> Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes, New Orleans, LA, p. 2061-2073, https://doi.org/10.1061/40926(239)162.","productDescription":"13 p.","startPage":"2061","endPage":"2073","numberOfPages":"13","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":212508,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/40926(239)162"},{"id":240001,"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":"5059f489e4b0c8380cd4bd94","contributors":{"authors":[{"text":"Donnelly, Chantal","contributorId":74955,"corporation":false,"usgs":true,"family":"Donnelly","given":"Chantal","email":"","affiliations":[],"preferred":false,"id":432240,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sallenger, Asbury H. Jr.","contributorId":27458,"corporation":false,"usgs":true,"family":"Sallenger","given":"Asbury H.","suffix":"Jr.","affiliations":[],"preferred":false,"id":432239,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031014,"text":"70031014 - 2007 - Probabilistic volcanic hazard and risk assessment","interactions":[],"lastModifiedDate":"2019-03-04T10:02:54","indexId":"70031014","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Probabilistic volcanic hazard and risk assessment","docAbstract":"[No abstract available]","largerWorkTitle":"Eos","language":"English","issn":"00963941","usgsCitation":"Marzocchi, W., Neri, A., Newhall, C.G., and Papale, P., 2007, Probabilistic volcanic hazard and risk assessment, <i>in</i> Eos, v. 88, no. 32.","startPage":"318","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":238906,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"32","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a8c9fe4b0c8380cd7e7c9","contributors":{"authors":[{"text":"Marzocchi, W.","contributorId":29156,"corporation":false,"usgs":true,"family":"Marzocchi","given":"W.","affiliations":[],"preferred":false,"id":429641,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Neri, A.","contributorId":86966,"corporation":false,"usgs":false,"family":"Neri","given":"A.","email":"","affiliations":[{"id":16992,"text":"Istituto Nazionale di Geofisica e Vulcanologia Pisa","active":true,"usgs":false}],"preferred":false,"id":429643,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Newhall, C. G.","contributorId":93056,"corporation":false,"usgs":true,"family":"Newhall","given":"C.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":429644,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Papale, P.","contributorId":60849,"corporation":false,"usgs":true,"family":"Papale","given":"P.","email":"","affiliations":[],"preferred":false,"id":429642,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031353,"text":"70031353 - 2007 - Consequences of land-cover misclassification in models of impervious surface","interactions":[],"lastModifiedDate":"2023-02-10T17:53:07.880351","indexId":"70031353","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3052,"text":"Photogrammetric Engineering and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Consequences of land-cover misclassification in models of impervious surface","docAbstract":"Model estimates of impervious area as a function of landcover area may be biased and imprecise because of errors in the land-cover classification. This investigation of the effects of land-cover misclassification on impervious surface models that use National Land Cover Data (NLCD) evaluates the consequences of adjusting land-cover within a watershed to reflect uncertainty assessment information. Model validation results indicate that using error-matrix information to adjust land-cover values used in impervious surface models does not substantially improve impervious surface predictions. Validation results indicate that the resolution of the landcover data (Level I and Level II) is more important in predicting impervious surface accurately than whether the land-cover data have been adjusted using information in the error matrix. Level I NLCD, adjusted for land-cover misclassification, is preferable to the other land-cover options for use in models of impervious surface. This result is tied to the lower classification error rates for the Level I NLCD. ?? 2007 American Society for Photogrammetry and Remote Sensing.","language":"English","publisher":"ASPRS","doi":"10.14358/PERS.73.12.1343","usgsCitation":"McMahon, G., 2007, Consequences of land-cover misclassification in models of impervious surface: Photogrammetric Engineering and Remote Sensing, v. 73, no. 12, p. 1343-1353, https://doi.org/10.14358/PERS.73.12.1343.","productDescription":"11 p.","startPage":"1343","endPage":"1353","numberOfPages":"11","costCenters":[{"id":565,"text":"Southeast Climate Science Center","active":true,"usgs":true}],"links":[{"id":477076,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.14358/pers.73.12.1343","text":"Publisher Index Page"},{"id":240061,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"73","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f9d5e4b0c8380cd4d7e6","contributors":{"authors":[{"text":"McMahon, Gerard 0000-0001-7675-777X gmcmahon@usgs.gov","orcid":"https://orcid.org/0000-0001-7675-777X","contributorId":191488,"corporation":false,"usgs":true,"family":"McMahon","given":"Gerard","email":"gmcmahon@usgs.gov","affiliations":[{"id":565,"text":"Southeast Climate Science Center","active":true,"usgs":true},{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":431172,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70031013,"text":"70031013 - 2007 - Deglacial climate variability in central Florida, USA","interactions":[],"lastModifiedDate":"2014-10-09T10:23:24","indexId":"70031013","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2996,"text":"Palaeogeography, Palaeoclimatology, Palaeoecology","printIssn":"0031-0182","active":true,"publicationSubtype":{"id":10}},"title":"Deglacial climate variability in central Florida, USA","docAbstract":"<p>Pollen and ostracode evidence from lacustrine sediments underlying modern Tampa Bay, Florida, document frequent and abrupt climatic and hydrological events superimposed on deglacial warming in the subtropics. Radiocarbon chronology on well-preserved mollusk shells and pollen residue from core MD02-2579 documents continuous sedimentation in a variety of non-marine habitats in a karst-controlled basin from 20 ka to 11.5 ka.</p>\n<br>\n<p>During the last glacial maximum (LGM), much drier and cooler-than-modern conditions are indicated by pollen assemblages enriched in Chenopodiaceae and <i>Carya</i>, with rare <i>Pinus</i> (< 10%). <i>Pinus</i> pollen increased to 20–40% during the warming of the initial deglaciation (∼ 17.2 ka), reaching near modern abundance (60–80%) during warmer, moister climates of the Bølling/Allerød interval (14.7–12.9 ka). Within the Bølling/Allerød, centennial-scale dry events corresponding to the Older Dryas and Intra-Allerød Cold Period indicate rapid vegetation response (< 50 years) to climate variability. The Younger Dryas (12.9–11.6 ka) was characterized by two distinct phases: slightly drier than the peak Bølling/Allerød between 12.9 and 12.3 ka and much drier from 12.3 to 11.5 ka. The Tampa Bay record of deglacial atmospheric temperature and moisture can be correlated with other paleoclimate records in the North Atlantic region and has implications for climate-forcing by ice-sheet fluctuation, thermohaline circulation, and atmospheric circulation.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Palaeogeography, Palaeoclimatology, Palaeoecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.palaeo.2007.04.016","issn":"00310182","usgsCitation":"Willard, D., Bernhardt, C., Brooks, G.R., Cronin, T.M., Edgar, T., and Larson, R., 2007, Deglacial climate variability in central Florida, USA: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 251, no. 3-4, p. 366-382, https://doi.org/10.1016/j.palaeo.2007.04.016.","productDescription":"17 p.","startPage":"366","endPage":"382","numberOfPages":"17","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":211592,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.palaeo.2007.04.016"},{"id":238905,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Tampa Bay","volume":"251","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fe51e4b0c8380cd4ec7c","contributors":{"authors":[{"text":"Willard, Debra  A. 0000-0003-4878-0942","orcid":"https://orcid.org/0000-0003-4878-0942","contributorId":85982,"corporation":false,"usgs":true,"family":"Willard","given":"Debra  A.","affiliations":[],"preferred":false,"id":429639,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bernhardt, C.E.","contributorId":65554,"corporation":false,"usgs":true,"family":"Bernhardt","given":"C.E.","email":"","affiliations":[],"preferred":false,"id":429637,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brooks, G. R.","contributorId":96312,"corporation":false,"usgs":true,"family":"Brooks","given":"G.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":429640,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cronin, T. M. 0000-0002-2643-0979","orcid":"https://orcid.org/0000-0002-2643-0979","contributorId":42613,"corporation":false,"usgs":true,"family":"Cronin","given":"T.","email":"","middleInitial":"M.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":false,"id":429636,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Edgar, T.","contributorId":70595,"corporation":false,"usgs":true,"family":"Edgar","given":"T.","email":"","affiliations":[],"preferred":false,"id":429638,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Larson, R.","contributorId":30438,"corporation":false,"usgs":true,"family":"Larson","given":"R.","affiliations":[],"preferred":false,"id":429635,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70030831,"text":"70030831 - 2007 - Dissolution of biogenic ooze over basement edifices in the equatorial Pacific with implications for hydrothermal ventilation of the oceanic crust","interactions":[],"lastModifiedDate":"2023-07-31T12:14:14.264462","indexId":"70030831","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Dissolution of biogenic ooze over basement edifices in the equatorial Pacific with implications for hydrothermal ventilation of the oceanic crust","docAbstract":"<div id=\"15645888\" class=\"article-section-wrapper js-article-section js-content-section  \" data-section-parent-id=\"0\"><p>Recent observations indicate that curious closed depressions in carbonate sediments overlying basement edifices are widespread in the equatorial Pacific. A possible mechanism for their creation is dissolution by fluids exiting basement vents from off-axis hydrothermal flow. Quantitative analysis based on the retrograde solubility of calcium carbonate and cooling of basement fluids during ascent provides an estimate for the dissolution capacity of the venting fluids. Comparison of the dissolution capacity and fluid flux with typical equatorial Pacific carbonate mass accumulation rates shows that this mechanism is feasible. By maintaining sediment-free basement outcrops, the process may promote widespread circulation of relatively unaltered seawater in the basement in an area where average sediment thicknesses are 300–500 m. The enhanced ventilation can explain several previously puzzling observations in this region, including anomalously low heat flux, relatively unaltered seawater in the basement, and aerobic and nitrate-reducing microbial activity at the base of the sediments.</p></div>","language":"English","publisher":"Geological Society of America","doi":"10.1130/G23797A.1","issn":"00917613","usgsCitation":"Bekins, B., Spivack, A., Davis, E., and Mayer, L.A., 2007, Dissolution of biogenic ooze over basement edifices in the equatorial Pacific with implications for hydrothermal ventilation of the oceanic crust: Geology, v. 35, no. 8, p. 679-682, https://doi.org/10.1130/G23797A.1.","productDescription":"4 p.","startPage":"679","endPage":"682","numberOfPages":"4","costCenters":[],"links":[{"id":489801,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://digitalcommons.uri.edu/gsofacpubs/2570","text":"External Repository"},{"id":238698,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"35","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a022ee4b0c8380cd4ff1f","contributors":{"authors":[{"text":"Bekins, B.A.","contributorId":98309,"corporation":false,"usgs":true,"family":"Bekins","given":"B.A.","email":"","affiliations":[],"preferred":false,"id":428872,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Spivack, A.J.","contributorId":45509,"corporation":false,"usgs":true,"family":"Spivack","given":"A.J.","affiliations":[],"preferred":false,"id":428871,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Davis, E.E.","contributorId":105865,"corporation":false,"usgs":true,"family":"Davis","given":"E.E.","email":"","affiliations":[],"preferred":false,"id":428874,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mayer, L. A.","contributorId":105776,"corporation":false,"usgs":true,"family":"Mayer","given":"L.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":428873,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031498,"text":"70031498 - 2007 - Persistent chlordane concentrations in long island sound sediment: Implications from chlordane, <sup>210</sup>Pb, and <sup>137</sup>Cs profiles","interactions":[],"lastModifiedDate":"2018-05-02T21:28:45","indexId":"70031498","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Persistent chlordane concentrations in long island sound sediment: Implications from chlordane, <sup>210</sup>Pb, and <sup>137</sup>Cs profiles","docAbstract":"Concentrations of chlordane, a banned termiticide and pesticide, were examined in recently collected surficial sediment (10 sites) and sediment cores (4 sites) in Long Island Sound (LIS).The highest chlordane concentrations were observed in western LIS, near highly urbanized areas. Chlordane concentrations did not decrease significantly in the past decade when compared to the data collected in 1996, consistent with the observation of near-constant chlordane levels in blue mussel tissues collected during the same time period. Chlordane concentrations in many of the sites exceeded levels above which harmful effects on sediment-dwelling organisms are expected to frequently occur. Chlordane concentrations in two of the four sediment cores showed a peak below the sediment surface, suggesting reduced chlordane inputs in recent years. The lack of a chlordane concentration maximum below the sediment surface in the other two cores, coupled with the lack of a well-defined <sup>137</sup>Cs peak, indicated significant sediment mixing. Simulations of <sup>137</sup>Cs and <sup>210</sup>Pb profiles in sediment cores with a simple sediment-mixing model were used to constrain both the deposition rate and the bioturbation rate of the sediment. Simulations of the chlordane profiles indicated continued chlordane input to LIS long after chlordane was phased out in the U.S. Continued chlordane input and significant sediment mixing may have contributed to the persistent chlordane concentrations in surficial sediment, which poses long-term threats to benthic organisms in LIS.","language":"English","publisher":"American Chemical Society","doi":"10.1021/es070749a","issn":"0013936X","usgsCitation":"Yang, L., Li, X., Crusius, J., Jans, U., Melcer, M., and Zhang, P., 2007, Persistent chlordane concentrations in long island sound sediment: Implications from chlordane, <sup>210</sup>Pb, and <sup>137</sup>Cs profiles: Environmental Science & Technology, v. 41, no. 22, p. 7723-7729, https://doi.org/10.1021/es070749a.","productDescription":"7 p.","startPage":"7723","endPage":"7729","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":240140,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New York","otherGeospatial":"Long Island","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -74.674072265625,\n              40.22082997283287\n            ],\n            [\n              -71.3177490234375,\n              40.22082997283287\n            ],\n            [\n              -71.3177490234375,\n              41.5579215778042\n            ],\n            [\n              -74.674072265625,\n              41.5579215778042\n            ],\n            [\n              -74.674072265625,\n              40.22082997283287\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"41","issue":"22","noUsgsAuthors":false,"publicationDate":"2007-10-16","publicationStatus":"PW","scienceBaseUri":"505a76f4e4b0c8380cd783b0","contributors":{"authors":[{"text":"Yang, L.","contributorId":6200,"corporation":false,"usgs":true,"family":"Yang","given":"L.","affiliations":[],"preferred":false,"id":431799,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Li, X.","contributorId":67635,"corporation":false,"usgs":true,"family":"Li","given":"X.","email":"","affiliations":[],"preferred":false,"id":431803,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Crusius, John 0000-0003-2554-0831 jcrusius@usgs.gov","orcid":"https://orcid.org/0000-0003-2554-0831","contributorId":2155,"corporation":false,"usgs":true,"family":"Crusius","given":"John","email":"jcrusius@usgs.gov","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":431801,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jans, U.","contributorId":35545,"corporation":false,"usgs":true,"family":"Jans","given":"U.","email":"","affiliations":[],"preferred":false,"id":431800,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Melcer, M.E.","contributorId":57270,"corporation":false,"usgs":true,"family":"Melcer","given":"M.E.","email":"","affiliations":[],"preferred":false,"id":431802,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Zhang, P.","contributorId":92822,"corporation":false,"usgs":true,"family":"Zhang","given":"P.","email":"","affiliations":[],"preferred":false,"id":431804,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031587,"text":"70031587 - 2007 - A GIS-based groundwater travel time model to evaluate stream nitrate concentration reductions from land use change","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70031587","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1539,"text":"Environmental Geology","active":true,"publicationSubtype":{"id":10}},"title":"A GIS-based groundwater travel time model to evaluate stream nitrate concentration reductions from land use change","docAbstract":"Excessive nitrate-nitrogen (nitrate) loss from agricultural watersheds is an environmental concern. A common conservation practice to improve stream water quality is to retire vulnerable row croplands to grass. In this paper, a groundwater travel time model based on a geographic information system (GIS) analysis of readily available soil and topographic variables was used to evaluate the time needed to observe stream nitrate concentration reductions from conversion of row crop land to native prairie in Walnut Creek watershed, Iowa. Average linear groundwater velocity in 5-m cells was estimated by overlaying GIS layers of soil permeability, land slope (surrogates for hydraulic conductivity and gradient, respectively) and porosity. Cells were summed backwards from the stream network to watershed divide to develop a travel time distribution map. Results suggested that groundwater from half of the land planted in prairie has reached the stream network during the 10 years of ongoing water quality monitoring. The mean travel time for the watershed was estimated to be 10.1 years, consistent with results from a simple analytical model. The proportion of land in the watershed and subbasins with prairie groundwater reaching the stream (10-22%) was similar to the measured reduction of stream nitrate (11-36%). Results provide encouragement that additional nitrate reductions in Walnut Creek are probable in the future as reduced nitrate groundwater from distal locations discharges to the stream network in the coming years. The high spatial resolution of the model (5-m cells) and its simplicity may make it potentially applicable for land managers interested in communicating lag time issues to the public, particularly related to nitrate concentration reductions over time. ?? 2007 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s00254-007-0659-0","issn":"09430105","usgsCitation":"Schilling, K.E., and Wolter, C., 2007, A GIS-based groundwater travel time model to evaluate stream nitrate concentration reductions from land use change: Environmental Geology, v. 53, no. 2, p. 433-443, https://doi.org/10.1007/s00254-007-0659-0.","startPage":"433","endPage":"443","numberOfPages":"11","costCenters":[],"links":[{"id":212479,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00254-007-0659-0"},{"id":239969,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"53","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-02-14","publicationStatus":"PW","scienceBaseUri":"5059e2dee4b0c8380cd45ccf","contributors":{"authors":[{"text":"Schilling, K. E.","contributorId":61982,"corporation":false,"usgs":true,"family":"Schilling","given":"K.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":432232,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wolter, C.F.","contributorId":23301,"corporation":false,"usgs":true,"family":"Wolter","given":"C.F.","email":"","affiliations":[],"preferred":false,"id":432231,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031341,"text":"70031341 - 2007 - Manganese biogeochemistry in a central Czech Republic catchment","interactions":[],"lastModifiedDate":"2012-03-12T17:21:13","indexId":"70031341","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3728,"text":"Water, Air, & Soil Pollution","onlineIssn":"1573-2932","printIssn":"0049-6979","active":true,"publicationSubtype":{"id":10}},"title":"Manganese biogeochemistry in a central Czech Republic catchment","docAbstract":"Mn biogeochemistry was studied from 1994 to 2003 in a small forested catchment in the central Czech Republic using the watershed mass balance approach together with measurements of internal stores and fluxes. Mn inputs in bulk deposition were relatively constant during a period of sharply decreasing acidic deposition, suggesting that the Mn source was terrestrial, and not from fossil fuel combustion. Mn inputs in bulk deposition and Mn supplied by weathering each averaged 13 mg m-2 year-1 (26 mg m -2 year-1 total input), whereas Mn export in streamwater and groundwater averaged 43 mg m-2 year-1. Thus an additional Mn source is needed to account for 17 mg m-2 year -1. Internal fluxes and pools of Mn were significantly greater than annual inputs and outputs. Throughfall Mn flux was 70 mg m-2 year-1, litterfall Mn flux was 103 mg m-2 year -1, and Mn net uptake by vegetation was 62 mg m-2 year-1. Large pools of labile or potentially labile Mn were present in biomass and surficial soil horizons. Small leakages from these large pools likely supply the additional Mn needed to close the watershed mass balance. This leakage may reflect an adjustment of the ecosystem to recent changes in atmospheric acidity. ?? 2007 Springer Science+Business Media B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Water, Air, and Soil Pollution","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s11270-007-9474-1","issn":"00496979","usgsCitation":"Navratil, T., Shanley, J.B., Skrivan, P., Kram, P., Mihaljevic, M., and Drahota, P., 2007, Manganese biogeochemistry in a central Czech Republic catchment: Water, Air, & Soil Pollution, v. 186, no. 1-4, p. 149-165, https://doi.org/10.1007/s11270-007-9474-1.","startPage":"149","endPage":"165","numberOfPages":"17","costCenters":[],"links":[{"id":239851,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212376,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11270-007-9474-1"}],"volume":"186","issue":"1-4","noUsgsAuthors":false,"publicationDate":"2007-09-19","publicationStatus":"PW","scienceBaseUri":"505a4ca7e4b0c8380cd69ddf","contributors":{"authors":[{"text":"Navratil, T.","contributorId":32352,"corporation":false,"usgs":true,"family":"Navratil","given":"T.","affiliations":[],"preferred":false,"id":431125,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shanley, J. B.","contributorId":52226,"corporation":false,"usgs":true,"family":"Shanley","given":"J.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":431126,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Skrivan, P.","contributorId":14197,"corporation":false,"usgs":true,"family":"Skrivan","given":"P.","email":"","affiliations":[],"preferred":false,"id":431123,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kram, P.","contributorId":84549,"corporation":false,"usgs":true,"family":"Kram","given":"P.","email":"","affiliations":[],"preferred":false,"id":431128,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Mihaljevic, M.","contributorId":74578,"corporation":false,"usgs":true,"family":"Mihaljevic","given":"M.","email":"","affiliations":[],"preferred":false,"id":431127,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Drahota, P.","contributorId":26139,"corporation":false,"usgs":true,"family":"Drahota","given":"P.","email":"","affiliations":[],"preferred":false,"id":431124,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031052,"text":"70031052 - 2007 - A condensed middle Cenomanian succession in the Dakota Sandstone (Upper Cretaceous), Sevilleta National Wildlife Refuge, Socorro County, New Mexico","interactions":[],"lastModifiedDate":"2016-10-12T09:48:20","indexId":"70031052","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2860,"text":"New Mexico Geology","active":true,"publicationSubtype":{"id":10}},"title":"A condensed middle Cenomanian succession in the Dakota Sandstone (Upper Cretaceous), Sevilleta National Wildlife Refuge, Socorro County, New Mexico","docAbstract":"<p>The upper part of the Dakota Sandstone exposed on the Sevilleta National Wildlife Refuge, northern Socorro County, New Mexico, is a condensed, Upper Cretaceous, marine succession spanning the first five middle Cenomanian ammonite zones of the U.S. Western Interior. Farther north in New Mexico these five ammonite zones occur over a stratigraphic interval more than an order of magnitude thicker. The basal part of this marine sequence was deposited in Seboyeta Bay, an elongate east-west embayment into New Mexico that marked the initial transgression of the western shoreline of the Late Cretaceous seaway into New Mexico. </p><p>The primary mechanism for condensing this section was nearshore, submarine erosion, although nondeposition played a minor role. The ammonite fossils from each zone are generally fragments of internal molds that are corroded on one side, indicating submarine burial, erosion of the prefossilized steinkern, and corrosion on the sea floor. In addition, the base of the condensed succession is marked by a thin bed that contains abundant, white-weathering, spherical to cylindrical phosphate nodules, many of which contain a cylindrical axial cavity of unknown origin. </p><p>The nodules lie on the bedding surface of the highly burrowed, ridge-forming sandstone near the top of the Dakota and occur in the overlying breccia. The breccia consists of rip-up clasts of sandstone and eroded internal molds of the ammonite Conlinoceras tarrantense, the zonal index for the basal middle Cenomanian. The nodules below the breccia imply a time of erosion followed by nondeposition or sediment bypass during which the phosphatization occurred. The breccia implies a time of submarine erosion, probably storm-related. </p><p>Remarkably, this condensed succession and the basal part of the overlying Mancos Shale tongue contain one of the most complete middle Cenomanian ammonite sequences in the U.S. Western Interior. Five of the six ammonite zones that characterize the middle Cenomanian of the Western Interior are found on Sevilleta National Wildlife Refuge. Only representatives of the second oldest zone are missing, although stratigraphically there is room for this zone. Fossils from each zone occur in stratigraphically separated beds; no zone overlaps with or is superimposed on another.</p><p>Maps of the western shoreline of the seaway at the beginning and end of the time represented by the condensed succession show the progression of the Late Cretaceous seaway from embayment to ocean covering most of New Mexico. These maps, combined with the resolving power of the middle Cenomanian biostratigraphic framework, indicate that the southern shoreline of Seboyeta Bay, which was only a few miles south of Sevilleta National Wildlife Refuge, was virtually stationary for most of this time. This ensured that the refuge was under shallow, well-oxygenated, marine waters for much of middle Cenomanian time. It also ensured that deposited sediments would be subjected periodically to erosion by nearshore waves and currents. </p><p>This report marks the first recorded occurrence in New Mexico of the following ammonite species: <i>Acanthoceras muldoonense</i> (zonal index), <i>A. bellense</i> (zonal index), <i>Turrilites (Euturrilites) scheuchzerianus</i>, <i>Cunningtoniceras</i> cf. <i>C. cunningtoni</i>, and <i>Paraconlinoceras leonense</i>. The occurrences of the zonal indices in the Dakota Sandstone on and to the south of the refuge increase not only their geographic distributions, but also the biostratigraphic resolution in the middle Cenomanian of New Mexico.</p>","language":"English","publisher":"New Mexico Bureau of Geology and Mineral Resources","issn":"0196948X","usgsCitation":"Hook, S.C., and Cobban, W., 2007, A condensed middle Cenomanian succession in the Dakota Sandstone (Upper Cretaceous), Sevilleta National Wildlife Refuge, Socorro County, New Mexico: New Mexico Geology, v. 29, no. 3, p. 75-96.","productDescription":"22 p.","startPage":"75","endPage":"96","costCenters":[{"id":207,"text":"Core Research Center","active":true,"usgs":true}],"links":[{"id":239008,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":270669,"type":{"id":15,"text":"Index Page"},"url":"https://geoinfo.nmt.edu/publications/periodicals/nmg/backissues/home.cfml?SpecificYear=&FromYear=&ToYear=&Volume=29&Number=3&title=&author=&keywords=&NMcounty=ANY&Submit=Search"}],"country":"United States","state":"New Mexico","county":"Socorro County","otherGeospatial":"Sevilleta National Wildlife Refuge","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -107.0898,34.1882 ], [ -107.0898,34.422 ], [ -106.5139,34.422 ], [ -106.5139,34.1882 ], [ -107.0898,34.1882 ] ] ] } } ] }","volume":"29","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e395e4b0c8380cd460f2","contributors":{"authors":[{"text":"Hook, Stephen C.","contributorId":175265,"corporation":false,"usgs":false,"family":"Hook","given":"Stephen","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":429787,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cobban, William A.","contributorId":99529,"corporation":false,"usgs":true,"family":"Cobban","given":"William A.","affiliations":[],"preferred":false,"id":429786,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031342,"text":"70031342 - 2007 - Local structuring factors of invertebrate communities in ephemeral freshwater rock pools and the influence of more permanent water bodies in the region","interactions":[],"lastModifiedDate":"2012-03-12T17:21:13","indexId":"70031342","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1919,"text":"Hydrobiologia","onlineIssn":"1573-5117","printIssn":"0018-8158","active":true,"publicationSubtype":{"id":10}},"title":"Local structuring factors of invertebrate communities in ephemeral freshwater rock pools and the influence of more permanent water bodies in the region","docAbstract":"We used three isolated clusters of small ephemeral rock pools on a sandstone flat in Utah to test the importance of local structuring processes on aquatic invertebrate communities. In the three clusters we characterized all ephemeral rock pools (total: 27) for their morphometry, and monitored their water quality, hydrology and community assemblage during a full hydrocycle. In each cluster we also sampled a set of more permanent interconnected freshwater systems positioned in a wash, draining the water from each cluster of rock pools. This design allowed additional testing for the potential role of more permanent water bodies in the region as source populations for the active dispersers and the effect on the community structure in the rock pools. Species richness and community composition in the rock pools correlated with level of permanence and the ammonia concentration. The length of the rock pool inundation cycle shaped community structure, most probably by inhibiting colonization by some taxa (e.g. tadpoles and insect larvae) through developmental constraints. The gradient in ammonia concentrations probably reflects differences in primary production. The more permanent water bodies in each wash differed both environmentally and in community composition from the connected set of rock pools. A limited set of active dispersers was observed in the rock pools. Our findings indicate that aquatic invertebrate communities in the ephemeral rock pools are mainly structured through habitat permanence, possibly linked with biotic interactions and primary production. ?? 2007 Springer Science+Business Media B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrobiologia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10750-007-0766-7","issn":"00188158","usgsCitation":"Jocque, M., Graham, T., and Brendonck, L., 2007, Local structuring factors of invertebrate communities in ephemeral freshwater rock pools and the influence of more permanent water bodies in the region: Hydrobiologia, v. 592, no. 1, p. 271-280, https://doi.org/10.1007/s10750-007-0766-7.","startPage":"271","endPage":"280","numberOfPages":"10","costCenters":[],"links":[{"id":212405,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10750-007-0766-7"},{"id":239885,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"592","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-07-24","publicationStatus":"PW","scienceBaseUri":"505a48e6e4b0c8380cd681eb","contributors":{"authors":[{"text":"Jocque, M.","contributorId":92055,"corporation":false,"usgs":true,"family":"Jocque","given":"M.","affiliations":[],"preferred":false,"id":431131,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Graham, T.","contributorId":79694,"corporation":false,"usgs":true,"family":"Graham","given":"T.","affiliations":[],"preferred":false,"id":431129,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brendonck, L.","contributorId":86172,"corporation":false,"usgs":true,"family":"Brendonck","given":"L.","email":"","affiliations":[],"preferred":false,"id":431130,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030947,"text":"70030947 - 2007 - Relation between mortality of prickly sculpin and diurnal extremes in water quality at Rodeo Lagoon, Marin County, California","interactions":[],"lastModifiedDate":"2018-09-25T09:23:48","indexId":"70030947","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1153,"text":"California Fish and Game","active":true,"publicationSubtype":{"id":10}},"title":"Relation between mortality of prickly sculpin and diurnal extremes in water quality at Rodeo Lagoon, Marin County, California","docAbstract":"[No abstract available]","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"California Fish and Game","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00081078","usgsCitation":"Martin, B., Saiki, M.K., and Fong, D., 2007, Relation between mortality of prickly sculpin and diurnal extremes in water quality at Rodeo Lagoon, Marin County, California: California Fish and Game, v. 93, no. 4, p. 214-223.","startPage":"214","endPage":"223","numberOfPages":"10","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":238933,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"93","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50e4a644e4b0e8fec6cdc152","contributors":{"authors":[{"text":"Martin, B.A.","contributorId":91269,"corporation":false,"usgs":true,"family":"Martin","given":"B.A.","email":"","affiliations":[],"preferred":false,"id":429338,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Saiki, M. K.","contributorId":28917,"corporation":false,"usgs":true,"family":"Saiki","given":"M.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":429336,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fong, D.","contributorId":36750,"corporation":false,"usgs":true,"family":"Fong","given":"D.","email":"","affiliations":[],"preferred":false,"id":429337,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031343,"text":"70031343 - 2007 - The relationship between circulating ecdysteroids and chela allometry in male tanner crabs: Evidence for a terminal molt in the genus Chionoecetes","interactions":[],"lastModifiedDate":"2017-05-10T18:13:05","indexId":"70031343","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2235,"text":"Journal of Crustacean Biology","active":true,"publicationSubtype":{"id":10}},"title":"The relationship between circulating ecdysteroids and chela allometry in male tanner crabs: Evidence for a terminal molt in the genus Chionoecetes","docAbstract":"Whether male Tanner crabs, Chionoecetes bairdi, undergo a terminal molt associated with a change in claw allometry has long been debated. We measured molting hormone levels in captured male C. bairdi to assess the potential for molting. We plotted a frequency histogram of chela height to carapace width ratios and found a bimodal distribution of crabs with a ratio of approximately 0.18 separating the two modes. Male crabs with a ratio less than 0.18 were classified as \"small-clawed\" (SC) while crabs with a ratio greater than 0.18 were classified as \"large-clawed\" (LC). Circulating molting hormones between SC and LC crabs were compared. Significantly lower ecdysteroid levels were found in LC crabs, indicating that this morphotype had negligible potential for molting. Circulating ecdysteroids were measured in SC males of different shell conditions (soft, new, old, and very old) and no significant differences were found. This research suggests that the molt to LC morphology is a terminal molt. The results from this study have important implications for fisheries management because sub-legal LC males will not recruit into the fishery and removal of larger males may have long term effects on population size structure.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Crustacean Biology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1651/S-2802.1","issn":"02780372","usgsCitation":"Tamone, S., Taggart, S.J., Andrews, A., Mondragon, J., and Nielsen, J., 2007, The relationship between circulating ecdysteroids and chela allometry in male tanner crabs: Evidence for a terminal molt in the genus Chionoecetes: Journal of Crustacean Biology, v. 27, no. 4, p. 635-642, https://doi.org/10.1651/S-2802.1.","startPage":"635","endPage":"642","numberOfPages":"8","costCenters":[],"links":[{"id":476947,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1651/s-2802.1","text":"Publisher Index Page"},{"id":239886,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212406,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1651/S-2802.1"}],"volume":"27","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baf15e4b08c986b324532","contributors":{"authors":[{"text":"Tamone, S.L.","contributorId":67728,"corporation":false,"usgs":true,"family":"Tamone","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":431134,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Taggart, S. James","contributorId":30131,"corporation":false,"usgs":true,"family":"Taggart","given":"S.","email":"","middleInitial":"James","affiliations":[],"preferred":false,"id":431132,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Andrews, A.G.","contributorId":92401,"corporation":false,"usgs":true,"family":"Andrews","given":"A.G.","email":"","affiliations":[],"preferred":false,"id":431136,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mondragon, Jennifer","contributorId":57580,"corporation":false,"usgs":false,"family":"Mondragon","given":"Jennifer","email":"","affiliations":[],"preferred":false,"id":431133,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Nielsen, J.K.","contributorId":84488,"corporation":false,"usgs":true,"family":"Nielsen","given":"J.K.","email":"","affiliations":[],"preferred":false,"id":431135,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031572,"text":"70031572 - 2007 - Linking ground-water age and chemistry data along flow paths: Implications for trends and transformations of nitrate and pesticides","interactions":[],"lastModifiedDate":"2018-09-26T15:48:13","indexId":"70031572","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2233,"text":"Journal of Contaminant Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Linking ground-water age and chemistry data along flow paths: Implications for trends and transformations of nitrate and pesticides","docAbstract":"<p>Tracer-based ground-water ages, along with the concentrations of pesticides, nitrogen species, and other redox-active constituents, were used to evaluate the trends and transformations of agricultural chemicals along flow paths in diverse hydrogeologic settings. A range of conditions affecting the transformation of nitrate and pesticides (e.g., thickness of unsaturated zone, redox conditions) was examined at study sites in Georgia, North Carolina, Wisconsin, and California. Deethylatrazine (DEA), a transformation product of atrazine, was typically present at concentrations higher than those of atrazine at study sites with thick unsaturated zones but not at sites with thin unsaturated zones. Furthermore, the fraction of atrazine plus DEA that was present as DEA did not increase as a function of ground-water age. These findings suggest that atrazine degradation occurs primarily in the unsaturated zone with little or no degradation in the saturated zone. Similar observations were also made for metolachlor and alachlor. The fraction of the initial nitrate concentration found as excess N2 (N2 derived from denitrification) increased with ground-water age only at the North Carolina site, where oxic conditions were generally limited to the top 5??m of saturated thickness. Historical trends in fluxes to ground water were evaluated by relating the times of recharge of ground-water samples, estimated using chlorofluorocarbon concentrations, with concentrations of the parent compound at the time of recharge, estimated by summing the molar concentrations of the parent compound and its transformation products in the age-dated sample. Using this approach, nitrate concentrations were estimated to have increased markedly from 1960 to the present at all study sites. Trends in concentrations of atrazine, metolachlor, alachlor, and their degradates were related to the timing of introduction and use of these compounds. Degradates, and to a lesser extent parent compounds, were detected in ground water dating back to the time these compounds were introduced.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.jconhyd.2007.05.007","issn":"01697722","usgsCitation":"Tesoriero, A., Saad, D.A., Burow, K., Frick, E.A., Puckett, L., and Barbash, J., 2007, Linking ground-water age and chemistry data along flow paths: Implications for trends and transformations of nitrate and pesticides: Journal of Contaminant Hydrology, v. 94, no. 1-2, p. 139-155, https://doi.org/10.1016/j.jconhyd.2007.05.007.","productDescription":"17 p.","startPage":"139","endPage":"155","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"links":[{"id":239700,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212242,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jconhyd.2007.05.007"}],"volume":"94","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a47d3e4b0c8380cd679e0","contributors":{"authors":[{"text":"Tesoriero, A. J.","contributorId":99127,"corporation":false,"usgs":true,"family":"Tesoriero","given":"A. J.","affiliations":[],"preferred":false,"id":432179,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Saad, D. A.","contributorId":85212,"corporation":false,"usgs":true,"family":"Saad","given":"D.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":432178,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Burow, K.R. 0000-0001-6006-6667","orcid":"https://orcid.org/0000-0001-6006-6667","contributorId":48283,"corporation":false,"usgs":true,"family":"Burow","given":"K.R.","affiliations":[],"preferred":false,"id":432175,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Frick, E. A.","contributorId":61840,"corporation":false,"usgs":true,"family":"Frick","given":"E.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":432176,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Puckett, L.J.","contributorId":27503,"corporation":false,"usgs":true,"family":"Puckett","given":"L.J.","email":"","affiliations":[],"preferred":false,"id":432174,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Barbash, J.E.","contributorId":62783,"corporation":false,"usgs":true,"family":"Barbash","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":432177,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70030945,"text":"70030945 - 2007 - Bald Mountain gold mining district, Nevada: A Jurassic reduced intrusion-related gold system","interactions":[],"lastModifiedDate":"2012-03-12T17:21:19","indexId":"70030945","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1472,"text":"Economic Geology","active":true,"publicationSubtype":{"id":10}},"title":"Bald Mountain gold mining district, Nevada: A Jurassic reduced intrusion-related gold system","docAbstract":"The Bald Mountain mining district has produced about 2 million ounces (Moz) of An. Geologic mapping, field relationships, geochemical data, petrographic observations, fluid inclusion characteristics, and Pb, S, O, and H isotope data indicate that An mineralization was associated with a reduced Jurassic intrusion. Gold deposits are localized within and surrounding a Jurassic (159 Ma) quartz monzonite porphyry pluton and dike complex that intrudes Cambrian to Mississippian carbonate and clastic rocks. The pluton, associated dikes, and An mineralization were controlled by a crustal-scale northwest-trending structure named the Bida trend. Gold deposits are localized by fracture networks in the pluton and the contact metamorphic aureole, dike margins, high-angle faults, and certain strata or shale-limestone contacts in sedimentary rocks. Gold mineralization was accompanied by silicification and phyllic alteration, ??argillic alteration at shallow levels. Although An is typically present throughout, the system exhibits a classic concentric geochemical zonation pattern with Mo, W, Bi, and Cu near the center, Ag, Pb, and Zn at intermediate distances, and As and Sb peripheral to the intrusion. Near the center of the system, micron-sized native An occurs with base metal sulfides and sulfosalts. In peripheral deposits and in later stages of mineralization, Au is typically submicron in size and resides in pyrite or arsenopyrite. Electron microprobe and laser ablation ICP-MS analyses show that arsenopyrite, pyrite, and Bi sulfide minerals contain 10s to 1,000s of ppm Au. Ore-forming fluids were aqueous and carbonic at deep levels and episodically hypersaline at shallow levels due to boiling. The isotopic compositions of H and O in quartz and sericite and S and Pb in sulfides are indicative of magmatic ore fluids with sedimentary sulfur. Together, the evidence suggests that Au was introduced by reduced S-bearing magmatic fluids derived from a reduced intrusion. The reduced character of the intrusion was caused by assimilation of carbonaceous sedimentary rocks. Tertiary faults dismember the area and drop down the upper part of the mineralizing system to the west. The abundant and widespread kaolinite in oxide ores is relatively disordered (1A polytype) and has ??D and ??18O values suggestive of a supergene origin. The deep weathering and oxidation of the ores associated with exhumation made them amenable to open-pit mining and processing using cyanide heap leach methods. ?? 2007 Society of Economic Geologists, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Economic Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2113/gsecongeo.102.6.1129","issn":"03610128","usgsCitation":"Nutt, C., and Hofstra, A., 2007, Bald Mountain gold mining district, Nevada: A Jurassic reduced intrusion-related gold system: Economic Geology, v. 102, no. 6, p. 1129-1155, https://doi.org/10.2113/gsecongeo.102.6.1129.","startPage":"1129","endPage":"1155","numberOfPages":"27","costCenters":[],"links":[{"id":211588,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2113/gsecongeo.102.6.1129"},{"id":238900,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"102","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059eface4b0c8380cd4a3c0","contributors":{"authors":[{"text":"Nutt, C.J.","contributorId":52577,"corporation":false,"usgs":true,"family":"Nutt","given":"C.J.","email":"","affiliations":[],"preferred":false,"id":429333,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hofstra, A. H. 0000-0002-2450-1593","orcid":"https://orcid.org/0000-0002-2450-1593","contributorId":41426,"corporation":false,"usgs":true,"family":"Hofstra","given":"A. H.","affiliations":[],"preferred":false,"id":429332,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031508,"text":"70031508 - 2007 - Analysis of impacts of urban land use and land cover on air quality in the Las Vegas region using remote sensing information and ground observations","interactions":[],"lastModifiedDate":"2017-04-12T15:58:28","indexId":"70031508","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2068,"text":"International Journal of Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Analysis of impacts of urban land use and land cover on air quality in the Las Vegas region using remote sensing information and ground observations","docAbstract":"<p><span>Urban development in the Las Vegas Valley of Nevada (USA) has expanded rapidly over the past 50 years. The air quality in the valley has suffered owing to increases from anthropogenic emissions of carbon monoxide, ozone and criteria pollutants of particular matter. Air quality observations show that pollutant concentrations have apparent heterogeneous characteristics in the urban area. Quantified urban land use and land cover information derived from satellite remote sensing data indicate an apparent local influence of urban development density on air pollutant distributions. Multi‐year observational data collected by a network of local air monitoring stations specify that ozone maximums develop in the May and June timeframe, whereas minimum concentrations generally occur from November to February. The fine particulate matter maximum occurs in July. Ozone concentrations are highest on the west and northwest sides of the valley. Night‐time ozone reduction contributes to the heterogeneous features of the spatial distribution for average ozone levels in the Las Vegas metropolitan area. Decreased ozone levels associated with increased urban development density suggest that the highest ozone and lowest nitrogen oxides concentrations are associated with medium to low density urban development in Las Vegas.</span></p>","language":"English","publisher":"Taylor & Francis","doi":"10.1080/01431160701227653","issn":"01431161","usgsCitation":"Xian, G., 2007, Analysis of impacts of urban land use and land cover on air quality in the Las Vegas region using remote sensing information and ground observations: International Journal of Remote Sensing, v. 28, no. 24, p. 5427-5445, https://doi.org/10.1080/01431160701227653.","productDescription":"19 p.","startPage":"5427","endPage":"5445","numberOfPages":"19","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":239729,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212267,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/01431160701227653"}],"volume":"28","issue":"24","noUsgsAuthors":false,"publicationDate":"2007-12-21","publicationStatus":"PW","scienceBaseUri":"5059eb1ce4b0c8380cd48c19","contributors":{"authors":[{"text":"Xian, G. 0000-0001-5674-2204","orcid":"https://orcid.org/0000-0001-5674-2204","contributorId":65656,"corporation":false,"usgs":true,"family":"Xian","given":"G.","affiliations":[],"preferred":false,"id":431854,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70031358,"text":"70031358 - 2007 - A cold phase of the East Pacific triggers new phytoplankton blooms in San Francisco Bay","interactions":[],"lastModifiedDate":"2018-10-17T08:35:32","indexId":"70031358","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3165,"text":"Proceedings of the National Academy of Sciences of the United States of America","active":true,"publicationSubtype":{"id":10}},"title":"A cold phase of the East Pacific triggers new phytoplankton blooms in San Francisco Bay","docAbstract":"<p>Ecological observations sustained over decades often reveal abrupt changes in biological communities that signal altered ecosystem states. We report a large shift in the biological communities of San Francisco Bay, first detected as increasing phytoplankton biomass and occurrences of new seasonal blooms that began in 1999. This phytoplankton increase is paradoxical because it occurred in an era of decreasing wastewater nutrient inputs and reduced nitrogen and phosphorus concentrations, contrary to the guiding paradigm that algal biomass in estuaries increases in proportion to nutrient inputs from their watersheds. Coincidental changes included sharp declines in the abundance of bivalve mollusks, the key phytoplankton consumers in this estuary, and record high abundances of several bivalve predators: Bay shrimp, English sole, and Dungeness crab. The phytoplankton increase is consistent with a trophic cascade resulting from heightened predation on bivalves and suppression of their filtration control on phytoplankton growth. These community changes in San Francisco Bay across three trophic levels followed a state change in the California Current System characterized by increased upwelling intensity, amplified primary production, and strengthened southerly flows. These diagnostic features of the East Pacific \"cold phase\" lead to strong recruitment and immigration of juvenile flatfish and crustaceans into estuaries where they feed and develop. This study, built from three decades of observation, reveals a previously unrecognized mechanism of ocean-estuary connectivity. Interdecadal oceanic regime changes can propagate into estuaries, altering their community structure and efficiency of transforming land-derived nutrients into algal biomass.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Proceedings of the National Academy of Sciences of the United States of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1073/pnas.0706151104","issn":"00278424","usgsCitation":"Cloern, J.E., Jassby, A.D., Thompson, J.K., and Hieb, K., 2007, A cold phase of the East Pacific triggers new phytoplankton blooms in San Francisco Bay: Proceedings of the National Academy of Sciences of the United States of America, v. 104, no. 47, p. 18561-18565, https://doi.org/10.1073/pnas.0706151104.","productDescription":"5 p.","startPage":"18561","endPage":"18565","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":477147,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1073/pnas.0706151104","text":"Publisher Index Page"},{"id":239618,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212170,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1073/pnas.0706151104"}],"country":"United States","state":"California","city":"San Francisco","otherGeospatial":"San Francisco Bay","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -122.64862060546875,\n              37.391981943533544\n            ],\n            [\n              -121.74362182617188,\n              37.391981943533544\n            ],\n            [\n              -121.74362182617188,\n              38.238180119798635\n            ],\n            [\n              -122.64862060546875,\n              38.238180119798635\n            ],\n            [\n              -122.64862060546875,\n              37.391981943533544\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"104","issue":"47","noUsgsAuthors":false,"publicationDate":"2007-11-20","publicationStatus":"PW","scienceBaseUri":"5799db2ee4b0589fa1c7e66b","contributors":{"authors":[{"text":"Cloern, James E. 0000-0002-5880-6862 jecloern@usgs.gov","orcid":"https://orcid.org/0000-0002-5880-6862","contributorId":1488,"corporation":false,"usgs":true,"family":"Cloern","given":"James","email":"jecloern@usgs.gov","middleInitial":"E.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":431185,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jassby, Alan D.","contributorId":66403,"corporation":false,"usgs":true,"family":"Jassby","given":"Alan","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":431184,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Thompson, Janet K. 0000-0002-1528-8452 jthompso@usgs.gov","orcid":"https://orcid.org/0000-0002-1528-8452","contributorId":1009,"corporation":false,"usgs":true,"family":"Thompson","given":"Janet","email":"jthompso@usgs.gov","middleInitial":"K.","affiliations":[{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":431186,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hieb, Kathryn","contributorId":174609,"corporation":false,"usgs":false,"family":"Hieb","given":"Kathryn","email":"","affiliations":[{"id":6952,"text":"California Department of Fish and Wildlife","active":true,"usgs":false}],"preferred":false,"id":431183,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70035304,"text":"70035304 - 2007 - Late Cretaceous to Paleocene metamorphism and magmatism in the Funeral Mountains metamorphic core complex, Death Valley, California","interactions":[],"lastModifiedDate":"2012-03-12T17:21:55","indexId":"70035304","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Late Cretaceous to Paleocene metamorphism and magmatism in the Funeral Mountains metamorphic core complex, Death Valley, California","docAbstract":"Amphibolite-facies Proterozoic metasedimentary rocks below the low-angle Ceno-zoic Boundary Canyon Detachment record deep crustal processes related to Meso-zoic crustal thickening and subsequent extension. A 91.5 ?? 1.4 Ma Th-Pb SHRIMP-RG (sensitive high-resolution ion microprobe-reverse geometry) monazite age from garnet-kyanite-staurolite schist constrains the age of prograde metamorphism in the lower plate. Between the Boundary Canyon Detachment and the structurally deeper, subparallel Monarch Spring fault, prograde metamorphic fabrics are overprinted by a pervasive greenschist-facies retrogression, high-strain subhorizontal mylonitic foliation, and a prominent WNW-ESE stretching lineation parallel to corrugations on the Boundary Canyon Detachment. Granitic pegmatite dikes are deformed, rotated into parallelism, and boudinaged within the mylonitic foliation. High-U zircons from one muscovite granite dike yield an 85.8 ?? 1.4 Ma age. Below the Monarch Spring fault, retrogression is minor, and amphibolite-facies mineral elongation lineations plunge gently north to northeast. Multiple generations of variably deformed dikes, sills, and leucosomal segregations indicate a more complex history of partial melting and intrusion compared to that above the Monarch Spring fault, but thermobarometry on garnet amphibolites above and below the Monarch Spring fault record similar peak conditions of 620-680 ??C and 7-9 kbar, indicating minor (<3-5 km) structural omission across the Monarch Spring fault. Discordant SHRIMP-RG U-Pb zircon ages and 75-88 Ma Th-Pb monazite ages from leucosomal segregations in paragneisses suggest that partial melting of Proterozoic sedimentary protoliths was a source for the structurally higher 86 Ma pegmatites. Two weakly deformed two-mica leucogranite dikes that cut the high-grademetamorphic fabrics below the Monarch Spring fault yield 62.3 ?? 2.6 and 61.7 ?? 4.7 Ma U-Pb zircon ages, and contain 1.5-1.7 Ga cores. The similarity of metamorphic, leuco-some, and pegmatite ages to the period of Sevier belt thrusting and the period of most voluminous Sierran arc magmatism suggests that both burial by thrusting and regional magmatic heating contributed to metamorphism and subsequent partial melting. ??2007 Geological Society of America. All rights reserved.","largerWorkTitle":"Special Paper of the Geological Society of America","language":"English","doi":"10.1130/2006.2419(11)","issn":"00721077","usgsCitation":"Mattinson, C., Colgan, J., Metcalf, J., Miller, E.L., and Wooden, J.L., 2007, Late Cretaceous to Paleocene metamorphism and magmatism in the Funeral Mountains metamorphic core complex, Death Valley, California, <i>in</i> Special Paper of the Geological Society of America, no. 419, p. 205-223, https://doi.org/10.1130/2006.2419(11).","startPage":"205","endPage":"223","numberOfPages":"19","costCenters":[],"links":[{"id":215280,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/2006.2419(11)"},{"id":243072,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"419","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a44dce4b0c8380cd66e51","contributors":{"authors":[{"text":"Mattinson, C.G.","contributorId":11391,"corporation":false,"usgs":true,"family":"Mattinson","given":"C.G.","email":"","affiliations":[],"preferred":false,"id":450095,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Colgan, J.P.","contributorId":71678,"corporation":false,"usgs":true,"family":"Colgan","given":"J.P.","affiliations":[],"preferred":false,"id":450097,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Metcalf, J.R.","contributorId":91320,"corporation":false,"usgs":true,"family":"Metcalf","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":450099,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Miller, E. L.","contributorId":75583,"corporation":false,"usgs":true,"family":"Miller","given":"E.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":450098,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wooden, J. L.","contributorId":58678,"corporation":false,"usgs":true,"family":"Wooden","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":450096,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031569,"text":"70031569 - 2007 - Time-optimum packet scheduling for many-to-one routing in wireless sensor networks","interactions":[],"lastModifiedDate":"2012-03-12T17:21:12","indexId":"70031569","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Time-optimum packet scheduling for many-to-one routing in wireless sensor networks","docAbstract":"This paper studies the WSN application scenario with periodical traffic from all sensors to a sink. We present a time-optimum and energy-efficient packet scheduling algorithm and its distributed implementation. We first give a general many-to-one packet scheduling algorithm for wireless networks, and then prove that it is time-optimum and costs max(2N(u1) - 1, N(u 0) -1) time slots, assuming each node reports one unit of data in each round. Here N(u0) is the total number of sensors, while N(u 1) denotes the number of sensors in a sink's largest branch subtree. With a few adjustments, we then show that our algorithm also achieves time-optimum scheduling in heterogeneous scenarios, where each sensor reports a heterogeneous amount of data in each round. Then we give a distributed implementation to let each node calculate its duty-cycle locally and maximize efficiency globally. In this packet scheduling algorithm, each node goes to sleep whenever it is not transceiving, so that the energy waste of idle listening is also eliminated. Finally, simulations are conducted to evaluate network performance using the Qualnet simulator. Among other contributions, our study also identifies the maximum reporting frequency that a deployed sensor network can handle. ??2006 IEEE.","largerWorkTitle":"2006 IEEE International Conference on Mobile Ad Hoc and Sensor Systems, MASS","conferenceTitle":"2006 IEEE International Conference on Mobile Ad Hoc and Sensor Sysetems, MASS","conferenceDate":"9 October 2006 through 12 October 2006","conferenceLocation":"Vancouver, BC","language":"English","doi":"10.1109/MOBHOC.2006.278656","isbn":"1424405076; 9781424405077","usgsCitation":"Song, W., Yuan, F., and LaHuser, R., 2007, Time-optimum packet scheduling for many-to-one routing in wireless sensor networks, <i>in</i> 2006 IEEE International Conference on Mobile Ad Hoc and Sensor Systems, MASS, Vancouver, BC, 9 October 2006 through 12 October 2006, p. 81-90, https://doi.org/10.1109/MOBHOC.2006.278656.","startPage":"81","endPage":"90","numberOfPages":"10","costCenters":[],"links":[{"id":212182,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1109/MOBHOC.2006.278656"},{"id":239632,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb3d4e4b08c986b325ff2","contributors":{"authors":[{"text":"Song, W.-Z.","contributorId":23334,"corporation":false,"usgs":true,"family":"Song","given":"W.-Z.","email":"","affiliations":[],"preferred":false,"id":432165,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Yuan, F.","contributorId":104287,"corporation":false,"usgs":true,"family":"Yuan","given":"F.","email":"","affiliations":[],"preferred":false,"id":432167,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"LaHuser, R.","contributorId":80900,"corporation":false,"usgs":true,"family":"LaHuser","given":"R.","email":"","affiliations":[],"preferred":false,"id":432166,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031350,"text":"70031350 - 2007 - The distribution, occurrence and environmental effect of mercury in Chinese coals","interactions":[],"lastModifiedDate":"2012-03-12T17:21:13","indexId":"70031350","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3352,"text":"Science of the Total Environment","active":true,"publicationSubtype":{"id":10}},"title":"The distribution, occurrence and environmental effect of mercury in Chinese coals","docAbstract":"Mercury (Hg) is a toxic, persistent, and globally distributed pollutant due to its characteristic properties such as low melting and boiling points, conversion between chemical forms and participation in biological cycles. During combustion mercury in coal is almost totally emitted to the atmosphere. With a huge amount of coal consumed, coal combustion is one of the main anthropogenic sources of this element in the environment. In this study, Hg data of 1699 coal samples of China has been compiled, and the concentration, distribution, modes of occurrence, and the impact of Hg emissions on the environment are investigated. Most Chinese coals have Hg content in the range of 0.1 to 0.3??ppm, with an average of 0.19??ppm, which is slightly higher than the average Hg content of world coals and is close to that of the U.S. coals. The Hg content in coals varies in different coal basins, geological ages and coal ranks. The most likely mode of occurrences of Hg in high-sulfur and high Hg content coals is as solid solution in pyrite. But in low-sulfur coals, modes of occurrence of Hg are variable, and the organic-bound and sulfide-bound Hg may dominate. Silicate-bound Hg may be the main form in some coals because of magmatic intrusion. Mercury emissions during coal combustion have resulted in serious environmental contamination in China, particularly in the northeastern and southwestern China, where a high Hg content in the atmosphere occurs. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Science of the Total Environment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.scitotenv.2007.05.037","issn":"00489697","usgsCitation":"Zheng, L., Liu, G., and Chou, C.L., 2007, The distribution, occurrence and environmental effect of mercury in Chinese coals: Science of the Total Environment, v. 384, no. 1-3, p. 374-383, https://doi.org/10.1016/j.scitotenv.2007.05.037.","startPage":"374","endPage":"383","numberOfPages":"10","costCenters":[],"links":[{"id":212525,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.scitotenv.2007.05.037"},{"id":240022,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"384","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baae1e4b08c986b322a8b","contributors":{"authors":[{"text":"Zheng, Lingyun","contributorId":68495,"corporation":false,"usgs":true,"family":"Zheng","given":"Lingyun","email":"","affiliations":[],"preferred":false,"id":431160,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Liu, Gaisheng","contributorId":15158,"corporation":false,"usgs":true,"family":"Liu","given":"Gaisheng","email":"","affiliations":[],"preferred":false,"id":431158,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Chou, C. L.","contributorId":32655,"corporation":false,"usgs":false,"family":"Chou","given":"C.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":431159,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031512,"text":"70031512 - 2007 - Characterization of Toxoplasma gondii from raccoons (Procyon lotor), coyotes (Canis latrans), and striped skunks (Mephitis mephitis) in Wisconsin identified several atypical genotypes","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70031512","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Characterization of Toxoplasma gondii from raccoons (Procyon lotor), coyotes (Canis latrans), and striped skunks (Mephitis mephitis) in Wisconsin identified several atypical genotypes","docAbstract":"During 2005-2006, sera and tissues from raccoons (Procyon lotor), coyotes (Canis latrans), and skunks (Mephitis mephitis) from the state of Wisconsin were tested for Toxoplasma gondii infection. Antibodies to T. gondii were found in 32 of 54 (59.2%) raccoons, 18 of 35 (51.4%) coyotes, and 5 of 7 (71.4%) skunks using the modified agglutination test and a cut-off titer of 1:20. Pooled tissues (brains, hearts, and tongues) from 30 raccoons, 15 coyotes, and 1 skunk were bioassayed for T. gondii infection in mice or cats. Viable T. gondii was isolated from 5 of 30 (16.7%) raccoons, 6 of 15 (40.0%) coyotes, and the skunk. Genetic characterization of the 12 parasite isolates by multilocus PCR-RFLP markers revealed 6 different genotypes including 5 atypical and 1 archetypal II lineages. The results indicate the prevalence of T. gondii in wildlife mammals is high and that these animals may serve as an important reservoir for transmission of T. gondii. ?? American Society of Parasitologists 2007.","largerWorkTitle":"Journal of Parasitology","language":"English","doi":"10.1645/GE-1245.1","issn":"00223395","usgsCitation":"Dubey, J., Sundar, N., Nolden, C., Samuel, M., Velmurugan, G.V., Bandini, L., Kwok, O.C., Bodenstein, B., and Su, C., 2007, Characterization of Toxoplasma gondii from raccoons (Procyon lotor), coyotes (Canis latrans), and striped skunks (Mephitis mephitis) in Wisconsin identified several atypical genotypes, <i>in</i> Journal of Parasitology, v. 93, no. 6, p. 1524-1527, https://doi.org/10.1645/GE-1245.1.","startPage":"1524","endPage":"1527","numberOfPages":"4","costCenters":[],"links":[{"id":212326,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1645/GE-1245.1"},{"id":239793,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"93","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f4bde4b0c8380cd4bea6","contributors":{"authors":[{"text":"Dubey, J. P.","contributorId":80609,"corporation":false,"usgs":false,"family":"Dubey","given":"J. P.","affiliations":[],"preferred":false,"id":431865,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sundar, N.","contributorId":80640,"corporation":false,"usgs":true,"family":"Sundar","given":"N.","email":"","affiliations":[],"preferred":false,"id":431866,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nolden, C.A.","contributorId":9226,"corporation":false,"usgs":true,"family":"Nolden","given":"C.A.","affiliations":[],"preferred":false,"id":431861,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Samuel, M.D.","contributorId":13910,"corporation":false,"usgs":true,"family":"Samuel","given":"M.D.","affiliations":[],"preferred":false,"id":431862,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Velmurugan, G. V.","contributorId":84893,"corporation":false,"usgs":false,"family":"Velmurugan","given":"G.","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":431868,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Bandini, L.A.","contributorId":73409,"corporation":false,"usgs":true,"family":"Bandini","given":"L.A.","email":"","affiliations":[],"preferred":false,"id":431864,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Kwok, O. C. H.","contributorId":83891,"corporation":false,"usgs":false,"family":"Kwok","given":"O.","email":"","middleInitial":"C. H.","affiliations":[],"preferred":false,"id":431867,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Bodenstein, B. 0000-0001-7946-0103","orcid":"https://orcid.org/0000-0001-7946-0103","contributorId":6664,"corporation":false,"usgs":true,"family":"Bodenstein","given":"B.","affiliations":[],"preferred":false,"id":431860,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Su, C.","contributorId":18334,"corporation":false,"usgs":false,"family":"Su","given":"C.","email":"","affiliations":[],"preferred":false,"id":431863,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70031357,"text":"70031357 - 2007 - Integrated geophysical survey in defining subsidence features on a golf course","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70031357","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2323,"text":"Journal of Geophysics and Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Integrated geophysical survey in defining subsidence features on a golf course","docAbstract":"Subsidence was observed at several places on the Salina Municipal Golf Course in areas known to be built over a landfill in Salina, Kansas. High-resolution magnetic survey (???5400 m2), multi-channel electrical resistivity profiling (three 154 m lines) and microgravity profiling (23 gravity-station values) were performed on a subsidence site (Green 16) to aid in determining boundaries and density deficiency of the landfill in the vicinity of the subsidence. Horizontal boundaries of the landfill were confidently defined by both magnetic anomalies and the pseudo-vertical gradient of total field magnetic anomalies. Furthermore, the pseudo-vertical gradient of magnetic anomalies presented a unique anomaly at Green 16, which provided a criterion for predicting other spots with subsidence potential using the same gradient property. Results of multi-channel electrical resistivity profiling (ERP) suggested the bottom limit of the landfill at Green 16 was around 21 m below the ground surface based on the vertical gradient of electric resistivity and a priori information on the depth of the landfill. ERP results also outlined several possible landfill bodies based on their low resistivity values. Microgravity results suggested a -0.14 g cm-3 density deficiency at Green 16 that could equate to future surface subsidence of as much as 1.5 m due to gradual compaction. ?? 2007 Nanjing Institute of Geophysical Prospecting.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysics and Engineering","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1088/1742-2132/4/4/010","issn":"17422132","usgsCitation":"Xia, J., and Miller, R., 2007, Integrated geophysical survey in defining subsidence features on a golf course: Journal of Geophysics and Engineering, v. 4, no. 4, p. 443-451, https://doi.org/10.1088/1742-2132/4/4/010.","startPage":"443","endPage":"451","numberOfPages":"9","costCenters":[],"links":[{"id":476952,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1088/1742-2132/4/4/010","text":"Publisher Index Page"},{"id":212617,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1088/1742-2132/4/4/010"},{"id":240131,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"4","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-10-05","publicationStatus":"PW","scienceBaseUri":"505a3c62e4b0c8380cd62cc1","contributors":{"authors":[{"text":"Xia, J.","contributorId":63513,"corporation":false,"usgs":true,"family":"Xia","given":"J.","email":"","affiliations":[],"preferred":false,"id":431181,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, R. D.","contributorId":92693,"corporation":false,"usgs":true,"family":"Miller","given":"R. D.","affiliations":[],"preferred":false,"id":431182,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031567,"text":"70031567 - 2007 - Biotic and abiotic controls of argentine ant invasion success at local and landscape scales","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70031567","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Biotic and abiotic controls of argentine ant invasion success at local and landscape scales","docAbstract":"Although the ecological success of introduced species hinges on biotic interactions and physical conditions, few experimental studies - especially on animals - have simultaneously investigated the relative importance of both types of factors. The lack of such research may stem from the common assumption that native and introduced species exhibit similar environmental tolerances. Here we combine experimental and spatial modeling approaches (1) to determine the relative importance of biotic and abiotic controls of Argentine ant (Linepithema humile) invasion success, (2) to examine how the importance of these factors changes with spatial scale in southern California (USA), and (3) to assess how Argentine ants differ from native ants in their environmental tolerances. A factorial field experiment that combined native ant removal with irrigation revealed that Argentine ants failed to invade any dry plots (even those lacking native ants) but readily invaded all moist plots. Native ants slowed the spread of Argentine ants into irrigated plots but did not prevent invasion. In areas without Argentine ants, native ant species showed variable responses to irrigation. At the landscape scale, Argentine ant occurrence was positively correlated with minimum winter temperature (but not precipitation), whereas native ant diversity increased with precipitation and was negatively correlated with minimum winter temperature. These results are of interest for several reasons. First, they demonstrate that fine-scale differences in the physical environment can eclipse biotic resistance from native competitors in determining community susceptibility to invasion. Second, our results illustrate surprising complexities with respect to how the abiotic factors limiting invasion can change with spatial scale, and third, how native and invasive species can differ in their responses to the physical environment. Idiosyncratic and scale-dependent processes complicate attempts to forecast where introduced species will occur and how their range limits may shift as a result of climate change. ?? 2007 by the Ecological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1890/07-0122.1","issn":"00129658","usgsCitation":"Menke, S., Fisher, R., Jetz, W., and Holway, D., 2007, Biotic and abiotic controls of argentine ant invasion success at local and landscape scales: Ecology, v. 88, no. 12, p. 3164-3173, https://doi.org/10.1890/07-0122.1.","startPage":"3164","endPage":"3173","numberOfPages":"10","costCenters":[],"links":[{"id":477123,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1890/07-0122.1","text":"Publisher Index Page"},{"id":212630,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/07-0122.1"},{"id":240145,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f1a0e4b0c8380cd4ad48","contributors":{"authors":[{"text":"Menke, S.B.","contributorId":78938,"corporation":false,"usgs":true,"family":"Menke","given":"S.B.","email":"","affiliations":[],"preferred":false,"id":432155,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fisher, Robert N. 0000-0002-2956-3240","orcid":"https://orcid.org/0000-0002-2956-3240","contributorId":51675,"corporation":false,"usgs":true,"family":"Fisher","given":"Robert N.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":432154,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jetz, W.","contributorId":101458,"corporation":false,"usgs":true,"family":"Jetz","given":"W.","affiliations":[],"preferred":false,"id":432156,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Holway, D.A.","contributorId":31581,"corporation":false,"usgs":true,"family":"Holway","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":432153,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70156527,"text":"70156527 - 2007 - Determinants of elephant distribution at Nazinga Game Ranch, Burkina Faso","interactions":[],"lastModifiedDate":"2017-04-12T16:04:56","indexId":"70156527","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3923,"text":"Pachyderm","active":true,"publicationSubtype":{"id":10}},"title":"Determinants of elephant distribution at Nazinga Game Ranch, Burkina Faso","docAbstract":"<p><span>We used seasonal ground total counts and remote sensing and GIS technology to relate elephant (Loxodonta africana africana) distribution at Nazinga Game Ranch to environmental and anthropogenic factors. Variables used in analyses were normalized difference vegetation index, elevation, stream density, density of poaching and human illegal activities, distance to dams, distance to rivers, distance to roads, and distance to poaching risk. Contrary to our expectation, road traffic did not disturb elephants. Strong negative relationships were documented between elephant abundance and stream density, distance to dams, and poaching density. Density of poaching and other human illegal activities explained 81%, vegetation greenness 6%, and stream density 3% of the variation in elephant density. Elephant distribution represented a survival strategy affected by poaching, food quality and abundance, and water availability.&nbsp;</span></p>","language":"English","usgsCitation":"Jenks, J., Klaver, R.W., and Wicks, Z.W., 2007, Determinants of elephant distribution at Nazinga Game Ranch, Burkina Faso: Pachyderm, v. 42, p. 70-80.","productDescription":"11 p.","startPage":"70","endPage":"80","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":308193,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":307246,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.pachydermjournal.org/index.php/pachy/article/view/55"}],"country":"Burkina Faso","otherGeospatial":"Nazinga Game Ranch","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -1.984405517578125,\n              10.984335146101968\n            ],\n            [\n              -1.984405517578125,\n              11.356182392375551\n            ],\n            [\n              -1.196136474609375,\n              11.356182392375551\n            ],\n            [\n              -1.196136474609375,\n              10.984335146101968\n            ],\n            [\n              -1.984405517578125,\n              10.984335146101968\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"42","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55fa92b6e4b05d6c4e501a7b","contributors":{"authors":[{"text":"Jenks, Jonathan A.","contributorId":51591,"corporation":false,"usgs":true,"family":"Jenks","given":"Jonathan A.","affiliations":[],"preferred":false,"id":569404,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Klaver, Robert W. 0000-0002-3263-9701 bklaver@usgs.gov","orcid":"https://orcid.org/0000-0002-3263-9701","contributorId":3285,"corporation":false,"usgs":true,"family":"Klaver","given":"Robert","email":"bklaver@usgs.gov","middleInitial":"W.","affiliations":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true},{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"preferred":true,"id":569405,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wicks, Zeno W. III","contributorId":146911,"corporation":false,"usgs":false,"family":"Wicks","given":"Zeno","suffix":"III","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":569406,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70010356,"text":"70010356 - 2007 - The science, technology and research network (STARNET) a searchable thematic compilation of web resources","interactions":[],"lastModifiedDate":"2012-03-12T17:18:26","indexId":"70010356","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"The science, technology and research network (STARNET) a searchable thematic compilation of web resources","docAbstract":"International alliances in space efforts have resulted in a more rapid diffusion of space technology. This, in turn, increases pressure on organizations to push forward with technological developments and to take steps to maximize their inclusion into the research and development (R&D) process and the overall advancement and enhancement of space technology. To cope with this vast and rapidly growing amount of data and information that is vital to the success of the innovation, the Information Management Committee (IMC) of the Research Technology Agency (RTA) developed the science, technology and research network (STARNET). The purpose of this network is to facilitate access to worldwide information elements in terms of science, technology and overall research. It provides a virtual library with special emphasis on international security; a \"one stop\" information resource for policy makers, program managers, scientists, engineers, researchers and others. ?? 2007 IEEE.","largerWorkTitle":"Proceedings of the 3rd International Conference on Recent Advances in Space Technologies, RAST 2007","conferenceTitle":"3rd International Conference on Recent Advances in Space Technologies, RAST 2007","conferenceDate":"14 June 2007 through 16 June 2007","conferenceLocation":"Istanbul","language":"English","doi":"10.1109/RAST.2007.4283961","isbn":"1424410576; 9781424410576","usgsCitation":"Blados, W., Cotter, G., and Hermann, T., 2007, The science, technology and research network (STARNET) a searchable thematic compilation of web resources, <i>in</i> Proceedings of the 3rd International Conference on Recent Advances in Space Technologies, RAST 2007, Istanbul, 14 June 2007 through 16 June 2007, p. 115-118, https://doi.org/10.1109/RAST.2007.4283961.","startPage":"115","endPage":"118","numberOfPages":"4","costCenters":[],"links":[{"id":204943,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1109/RAST.2007.4283961"},{"id":219445,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bafb8e4b08c986b3249d1","contributors":{"authors":[{"text":"Blados, W.R.","contributorId":37890,"corporation":false,"usgs":true,"family":"Blados","given":"W.R.","email":"","affiliations":[],"preferred":false,"id":358707,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cotter, G.A.","contributorId":74133,"corporation":false,"usgs":true,"family":"Cotter","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":358709,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hermann, T.","contributorId":41584,"corporation":false,"usgs":true,"family":"Hermann","given":"T.","email":"","affiliations":[],"preferred":false,"id":358708,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
]}