{"pageNumber":"2225","pageRowStart":"55600","pageSize":"25","recordCount":184617,"records":[{"id":70032216,"text":"70032216 - 2008 - Submarine groundwater discharge and nutrient addition to the coastal zone and coral reefs of leeward Hawai'i","interactions":[],"lastModifiedDate":"2012-03-12T17:21:25","indexId":"70032216","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2662,"text":"Marine Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Submarine groundwater discharge and nutrient addition to the coastal zone and coral reefs of leeward Hawai'i","docAbstract":"Multiple tracers of groundwater input (salinity, Si, 223Ra, 224Ra, and 226Ra) were used together to determine the magnitude, character (meteoric versus seawater), and nutrient contribution associated with submarine groundwater discharge across the leeward shores of the Hawai'ian Islands Maui, Moloka'i, and Hawai'i. Tracer abundances were elevated in the unconfined coastal aquifer and the nearshore zone, decreasing to low levels offshore, indicative of groundwater discharge (near-fresh, brackish, or saline) at all locations. At several sites, we detected evidence of fresh and saline SGD occurring simultaneously. Conservative estimates of SGD fluxes ranged widely, from 0.02-0.65??m3??m- 2 d- 1at the various sites. Groundwater nutrient fluxes of 0.04-40??mmol N m- 2 d- 1 and 0.01-1.6??mmol P m- 2 d- 1 represent a major source of new nutrients to coastal ecosystems along these coasts. Nutrient additions were typically greatest at locations with a substantial meteoric component in groundwater, but the recirculation of seawater through the aquifer may provide a means of transferring terrestrially-derived nutrients to the coastal zone at several sites. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.marchem.2007.08.009","issn":"03044203","usgsCitation":"Street, J., Knee, K., Grossman, E.E., and Paytan, A., 2008, Submarine groundwater discharge and nutrient addition to the coastal zone and coral reefs of leeward Hawai'i: Marine Chemistry, v. 109, no. 3-4, p. 355-376, https://doi.org/10.1016/j.marchem.2007.08.009.","startPage":"355","endPage":"376","numberOfPages":"22","costCenters":[],"links":[{"id":214662,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.marchem.2007.08.009"},{"id":242407,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"109","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9d27e4b08c986b31d687","contributors":{"authors":[{"text":"Street, J.H.","contributorId":54027,"corporation":false,"usgs":true,"family":"Street","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":435086,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Knee, K.L.","contributorId":13811,"corporation":false,"usgs":true,"family":"Knee","given":"K.L.","affiliations":[],"preferred":false,"id":435085,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Grossman, E. E.","contributorId":96046,"corporation":false,"usgs":true,"family":"Grossman","given":"E.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":435087,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Paytan, A.","contributorId":98926,"corporation":false,"usgs":true,"family":"Paytan","given":"A.","affiliations":[],"preferred":false,"id":435088,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030233,"text":"70030233 - 2008 - Disruption of the lower food web in Lake Ontario: Did it affect alewife growth or condition?","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70030233","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Disruption of the lower food web in Lake Ontario: Did it affect alewife growth or condition?","docAbstract":"From the early 1980s to the late 1990s, a succession of non-native invertebrates colonized Lake Ontario and the suite of consequences caused by their colonization became known as \"food web disruption\". For example, the native burrowing amphipod Diporeia spp., a key link in the profundal food web, declined to near absence, exotic predaceous cladocerans with long spines proliferated, altering the zooplankton community, and depth distributions of fishes shifted. These changes had the potential to affect growth and condition of planktivorous alewife Alosa pseudoharengus, the most abundant fish in the lake. To determine if food web disruption affected alewife, we used change-point analysis to examine alewife growth and adult alewife condition during 1976-2006 and analysis-of-variance to determine if values between change points differed significantly. There were no change points in growth during the first year of life. Of three change points in growth during the second year of life, one coincided with the shift in springtime distribution of alewife to deeper water but it was not associated with a significant change in growth. After the second year of life, no change points in growth were evident, although growth in the third year of life spiked in those years when Bythotrephes, the largest of the exotic cladocerans, was abundant suggesting that it was a profitable prey item for age-2 fish. We detected two change points in condition of adult alewife in fall, but the first occurred in 1981, well before disruption began. A second change point occurred in 2003, well after disruption began. After the springtime distribution of alewife shifted deeper during 1992-1994, growth in the first two years of life became more variable, and growth in years of life two and older became correlated (P < 0.05). In conclusion, food web disruption had no negative affect on growth and condition of alewife in Lake Ontario although it appears to have resulted in growth in the first two years of life becoming more variable, growth in years of life two and older becoming correlated (P < 0.05), and growth spurts in year of life three. Copyright ?? 2008 AEHMS.","largerWorkTitle":"Aquatic Ecosystem Health and Management","language":"English","doi":"10.1080/14634980802515526","issn":"14634","usgsCitation":"O'Gorman, R., Prindle, S., Lantry, J., and Lantry, B., 2008, Disruption of the lower food web in Lake Ontario: Did it affect alewife growth or condition?, <i>in</i> Aquatic Ecosystem Health and Management, v. 11, no. 4, p. 392-402, https://doi.org/10.1080/14634980802515526.","startPage":"392","endPage":"402","numberOfPages":"11","costCenters":[],"links":[{"id":212168,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/14634980802515526"},{"id":239613,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"11","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0225e4b0c8380cd4fee2","contributors":{"authors":[{"text":"O'Gorman, R.","contributorId":48896,"corporation":false,"usgs":true,"family":"O'Gorman","given":"R.","affiliations":[],"preferred":false,"id":426227,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Prindle, S.E.","contributorId":39194,"corporation":false,"usgs":true,"family":"Prindle","given":"S.E.","email":"","affiliations":[],"preferred":false,"id":426226,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lantry, J.R.","contributorId":20972,"corporation":false,"usgs":true,"family":"Lantry","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":426225,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lantry, B.F.","contributorId":19105,"corporation":false,"usgs":true,"family":"Lantry","given":"B.F.","email":"","affiliations":[],"preferred":false,"id":426224,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70032994,"text":"70032994 - 2008 - Great Basin paleontological database","interactions":[],"lastModifiedDate":"2012-03-12T17:21:38","indexId":"70032994","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1820,"text":"Geosphere","active":true,"publicationSubtype":{"id":10}},"title":"Great Basin paleontological database","docAbstract":"The U.S. Geological Survey has constructed a paleontological database for the Great Basin physiographic province that can be served over the World Wide Web for data entry, queries, displays, and retrievals. It is similar to the web-database solution that we constructed for Alaskan paleontological data (www.alaskafossil.org). The first phase of this effort was to compile a paleontological bibliography for Nevada and portions of adjacent states in the Great Basin that has recently been completed. In addition, we are also compiling paleontological reports (Known as E&R reports) of the U.S. Geological Survey, which are another extensive source of l,egacy data for this region. Initial population of the database benefited from a recently published conodont data set and is otherwise focused on Devonian and Mississippian localities because strata of this age host important sedimentary exhalative (sedex) Au, Zn, and barite resources and enormons Carlin-type An deposits. In addition, these strata are the most important petroleum source rocks in the region, and record the transition from extension to contraction associated with the Antler orogeny, the Alamo meteorite impact, and biotic crises associated with global oceanic anoxic events. The finished product will provide an invaluable tool for future geologic mapping, paleontological research, and mineral resource investigations in the Great Basin, making paleontological data acquired over nearly the past 150 yr readily available over the World Wide Web. A description of the structure of the database and the web interface developed for this effort are provided herein. This database is being used ws a model for a National Paleontological Database (which we am currently developing for the U.S. Geological Survey) as well as for other paleontological databases now being developed in other parts of the globe. ?? 2008 Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geosphere","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/GES00162.1","issn":"1553040X","usgsCitation":"Zhang, N., Blodgett, R.B., and Hofstra, A., 2008, Great Basin paleontological database: Geosphere, v. 4, no. 3, p. 520-535, https://doi.org/10.1130/GES00162.1.","startPage":"520","endPage":"535","numberOfPages":"16","costCenters":[],"links":[{"id":487771,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1130/ges00162.1","text":"Publisher Index Page"},{"id":213271,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/GES00162.1"},{"id":240880,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"4","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2a52e4b0c8380cd5b0a0","contributors":{"authors":[{"text":"Zhang, N.","contributorId":26520,"corporation":false,"usgs":true,"family":"Zhang","given":"N.","email":"","affiliations":[],"preferred":false,"id":438872,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Blodgett, R. B.","contributorId":25176,"corporation":false,"usgs":true,"family":"Blodgett","given":"R.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":438871,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"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":438873,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70032217,"text":"70032217 - 2008 - Chapter 24 Lateral variability of the estuarine turbidity maximum in a tidal strait","interactions":[],"lastModifiedDate":"2018-10-02T10:14:22","indexId":"70032217","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3129,"text":"Proceedings in Marine Science","active":true,"publicationSubtype":{"id":10}},"title":"Chapter 24 Lateral variability of the estuarine turbidity maximum in a tidal strait","docAbstract":"The behavior of the estuarine turbidity maximum (ETM) in response to freshwater flow, tidal forcing, and bed dynamics has been studied extensively by many researchers. However, the majority of investigations focus on the longitudinal position and strength of the ETM, which can vary over tidal, spring-neap, and seasonal timescales. ETMs may become longitudinally fixed due to bathymetric constraints, and thus the lateral position may vary significantly on differing timescales. Lateral dynamics of the ETM may affect contaminant uptake in biologically active regions, while local deposition patterns may be affected by the dominant lateral position. A longitudinally fixed ETM in Carquinez Strait, California, was studied to specifically investigate the dynamics of lateral ETM variability during April 2004. an abrupt topographical control on the north side restricts gravitational circulation resulting in convergence and particle trapping, creating the ETM. The cross-section was continuously monitored with two upward-looking velocity profilers and four optical backscatterance sensors. In addition, cross-sectional measurements over one tidal cycle were performed during a spring tide with boat-mounted velocity and water quality profilers. The lateral and vertical positions of the ETM center of mass varied by a maximum of 250 and 5 m, respectively (20% of width and 17% of depth) over the tidal timescale, while tidally averaged lateral and vertical positions varied substantially less (50 and 1 m, respectively). ETM position responded to tidal energy (Urms), with higher vertical position and a laterally centered position resulting from increased mixing during spring tides, and a northerly lateral position from decreased mixing during neap tides. Hydrodynamic and sediment transport modeling of this period reproduces the lateral and vertical movements of the ETM center of mass. Modeling results indicate increased gravitational circulation in the strait and enhanced particle trapping on the north side during neap tides, thus displacing the ETM center of mass to the north. The south side has no topographical control, and therefore no particle trapping mechanism exists on the south side. Secondary circulation is strengthened on spring tides, distributing near-bed sediment toward the south. The field and modeling results are in agreement with previous work in Carquinez Strait and further elucidate the strong lateral variation of the ETM, even in narrow, energetic tidal straits. ?? 2008 Elsevier B.V. All rights reserved.","language":"English","publisher":"Elsevier","doi":"10.1016/S1568-2692(08)80026-5","usgsCitation":"Ganju, N., and Schoellhamer, D., 2008, Chapter 24 Lateral variability of the estuarine turbidity maximum in a tidal strait: Proceedings in Marine Science, v. 9, p. 339-355, https://doi.org/10.1016/S1568-2692(08)80026-5.","productDescription":"17 p.","startPage":"339","endPage":"355","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":242440,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f467e4b0c8380cd4bcf1","contributors":{"authors":[{"text":"Ganju, N. K. 0000-0002-1096-0465","orcid":"https://orcid.org/0000-0002-1096-0465","contributorId":64782,"corporation":false,"usgs":true,"family":"Ganju","given":"N. K.","affiliations":[],"preferred":false,"id":435089,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schoellhamer, D. H. 0000-0001-9488-7340","orcid":"https://orcid.org/0000-0001-9488-7340","contributorId":85624,"corporation":false,"usgs":true,"family":"Schoellhamer","given":"D. H.","affiliations":[],"preferred":false,"id":435090,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70030231,"text":"70030231 - 2008 - Lake trout population dynamics at Drummond Island Refuge in Lake Huron: Implications for future rehabilitation","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70030231","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Lake trout population dynamics at Drummond Island Refuge in Lake Huron: Implications for future rehabilitation","docAbstract":"The Drummond Island Refuge (DIR) was established in 1985 as part of the rehabilitation effort for lake trout Salvelinus namaycush in Lake Huron. Since then, several strains of hatchery-reared lake trout have been stocked annually at the DIR. An intensive lampricide treatment of the St. Marys River during 1998-2001 was expected to lower the abundance of sea lamprey Petromyzon marinus within the DIR by 2000. We conducted annual gill-net surveys during spring and fall to evaluate the performance of each of the strains of lake trout as well as that of the entire lake trout population (all strains pooled) in the DIR during 1991-2005. The criteria to evaluate performance included the proportion of \"wild\" fish within the population, spawner density, adult survival, growth, maturity, and wounding rate by sea lampreys. Wild lake trout did not recruit to the adult population to any detectable degree. During 1991-2005, the average density of spawning lake trout appeared to be marginally sufficient to initiate a self-sustaining population. Survival of the Seneca Lake (SEN) strain of lake trout was significantly higher than that of the Superior-Marquette (SUP) strain, in part because of the higher sea-lamprey-induced mortality suffered by the SUP strain. However, other factors were also involved. Apparently SUP fish were more vulnerable to fishing conducted in waters near the refuge boundaries than SEN fish. The St. Marys River treatment appeared to be effective in reducing the sea lamprey wounding rate on SEN fish. We recommend that the stocking of SEN lake trout in the DIR, control of sea lampreys in the St. Marys River, and reduction of commercial fishery effort in waters near the DIR be maintained. ?? Copyright by the American Fisheries Society 2008.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"North American Journal of Fisheries Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/M07-083.1","issn":"02755","usgsCitation":"Madenjian, C., Ebener, M., and Desorcie, T., 2008, Lake trout population dynamics at Drummond Island Refuge in Lake Huron: Implications for future rehabilitation: North American Journal of Fisheries Management, v. 28, no. 4, p. 979-992, https://doi.org/10.1577/M07-083.1.","startPage":"979","endPage":"992","numberOfPages":"14","costCenters":[],"links":[{"id":212141,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/M07-083.1"},{"id":239577,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"28","issue":"4","noUsgsAuthors":false,"publicationDate":"2008-08-01","publicationStatus":"PW","scienceBaseUri":"505a416ae4b0c8380cd654ff","contributors":{"authors":[{"text":"Madenjian, C.P.","contributorId":64175,"corporation":false,"usgs":true,"family":"Madenjian","given":"C.P.","affiliations":[],"preferred":false,"id":426217,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ebener, M.P.","contributorId":93422,"corporation":false,"usgs":true,"family":"Ebener","given":"M.P.","affiliations":[],"preferred":false,"id":426218,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Desorcie, T.J.","contributorId":96442,"corporation":false,"usgs":true,"family":"Desorcie","given":"T.J.","affiliations":[],"preferred":false,"id":426219,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70033549,"text":"70033549 - 2008 - Immunization of black-tailed prairie dog against plague through consumption of vaccine-laden baits","interactions":[],"lastModifiedDate":"2018-01-17T13:28:54","indexId":"70033549","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2507,"text":"Journal of Wildlife Diseases","active":true,"publicationSubtype":{"id":10}},"title":"Immunization of black-tailed prairie dog against plague through consumption of vaccine-laden baits","docAbstract":"<p><span>Prairie dogs (</span><i>Cynomys</i><span><span>&nbsp;</span>spp.) are highly susceptible to<span>&nbsp;</span></span><i>Yersinia pestis</i><span><span>&nbsp;</span>and, along with other wild rodents, are significant reservoirs of plague for other wildlife and humans in the western United States. A recombinant raccoon poxvirus, expressing the F1 antigen of<span>&nbsp;</span></span><i>Y. pestis</i><span>, was incorporated into a palatable bait and offered to three groups (</span><i>n</i><span>=18, 19, and 20) of black-tailed prairie dogs (</span><i>Cynomys ludovicianus</i><span>) for voluntary consumption, either one, two, or three times, at roughly 3-wk intervals. A control group (</span><i>n</i><span>=19) received baits containing raccoon poxvirus without the inserted antigen. Mean antibody titers to<span>&nbsp;</span></span><i>Y. pestis</i><span><span>&nbsp;</span>F1 antigen increased significantly in all groups ingesting the vaccine-laden baits, whereas the control group remained negative. Upon challenge with virulent<span>&nbsp;</span></span><i>Y. pestis</i><span>, immunized groups had higher survival rates (38%) than the unimmunized control group (11%). The mean survival time of groups ingesting vaccine-laden baits either two or three times was significantly higher than that of animals ingesting vaccine-laden baits just one time and of animals in the control group. These results show that oral immunization of prairie dogs against plague provides some protection against challenge at dosages that simulate simultaneous delivery of the plague bacterium by numerous (3–10) flea bites.</span></p>","language":"English","publisher":"Wildlife Disease Association","doi":"10.7589/0090-3558-44.4.930","issn":"00903","usgsCitation":"Rocke, T.E., Smith, S., Stinchcomb, D., and Osorio, J.E., 2008, Immunization of black-tailed prairie dog against plague through consumption of vaccine-laden baits: Journal of Wildlife Diseases, v. 44, no. 4, p. 930-937, https://doi.org/10.7589/0090-3558-44.4.930.","productDescription":"8 p.","startPage":"930","endPage":"937","numberOfPages":"8","costCenters":[{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"links":[{"id":476747,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.7589/0090-3558-44.4.930","text":"Publisher Index Page"},{"id":242154,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"44","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3896e4b0c8380cd61615","contributors":{"authors":[{"text":"Rocke, Tonie E. 0000-0003-3933-1563 trocke@usgs.gov","orcid":"https://orcid.org/0000-0003-3933-1563","contributorId":2665,"corporation":false,"usgs":true,"family":"Rocke","given":"Tonie","email":"trocke@usgs.gov","middleInitial":"E.","affiliations":[{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"preferred":true,"id":441399,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, Susan 0000-0001-6478-5028 susansmith@usgs.gov","orcid":"https://orcid.org/0000-0001-6478-5028","contributorId":139497,"corporation":false,"usgs":true,"family":"Smith","given":"Susan","email":"susansmith@usgs.gov","affiliations":[{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"preferred":false,"id":441396,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stinchcomb, D.T.","contributorId":31336,"corporation":false,"usgs":true,"family":"Stinchcomb","given":"D.T.","email":"","affiliations":[],"preferred":false,"id":441397,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Osorio, Jorge E.","contributorId":174759,"corporation":false,"usgs":false,"family":"Osorio","given":"Jorge","email":"","middleInitial":"E.","affiliations":[{"id":18002,"text":"University of Wisconsin - Madison","active":true,"usgs":false}],"preferred":false,"id":441398,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70033550,"text":"70033550 - 2008 - Observations of the north polar water ice annulus on Mars using THEMIS and TES","interactions":[],"lastModifiedDate":"2019-02-19T09:34:12","indexId":"70033550","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3083,"text":"Planetary and Space Science","active":true,"publicationSubtype":{"id":10}},"title":"Observations of the north polar water ice annulus on Mars using THEMIS and TES","docAbstract":"<p>The Martian seasonal CO2 ice caps advance and retreat each year. In the spring, as the CO2 cap gradually retreats, it leaves behind an extensive defrosting zone from the solid CO2 cap to the location where all CO2 frost has sublimated. We have been studying this phenomenon in the north polar region using data from the THermal EMission Imaging System (THEMIS), a visible and infra-red (IR) camera on the Mars Odyssey spacecraft, and the Thermal Emission Spectrometer (TES) on Mars Global Surveyor. Recently, we discovered that some THEMIS images of the CO2 defrosting zone contain evidence for a distinct defrosting phenomenon: some areas just south of the CO2 cap edge are too bright in visible wavelengths to be defrosted terrain, but too warm in the IR to be CO2 ice. We hypothesize that we are seeing evidence for a seasonal annulus of water ice (frost) that recedes with the seasonal CO2 cap, as predicted by previous workers. In this paper, we describe our observations with THEMIS and compare them to simultaneous observations by TES and OMEGA. All three instruments find that this phenomenon is distinct from the CO2 cap and most likely composed of water ice. We also find strong evidence that the annulus widens as it recedes. Finally, we show that this annulus can be detected in the raw THEMIS data as it is collected, enabling future long-term onboard monitoring.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Planetary and Space Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.pss.2007.08.008","issn":"00320633","usgsCitation":"Wagstaff, K.L., Titus, T.N., Ivanov, A.B., Castano, R., and Bandfield, J.L., 2008, Observations of the north polar water ice annulus on Mars using THEMIS and TES: Planetary and Space Science, v. 56, no. 2, p. 256-265, https://doi.org/10.1016/j.pss.2007.08.008.","productDescription":"10 p.","startPage":"256","endPage":"265","numberOfPages":"10","costCenters":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"links":[{"id":242186,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Mars","volume":"56","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6ac3e4b0c8380cd74338","contributors":{"authors":[{"text":"Wagstaff, Kiri L.","contributorId":213351,"corporation":false,"usgs":false,"family":"Wagstaff","given":"Kiri","email":"","middleInitial":"L.","affiliations":[{"id":7023,"text":"Jet Propulsion Laboratory, California Institute of Technology","active":true,"usgs":false}],"preferred":false,"id":441400,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Titus, Timothy N. 0000-0003-0700-4875 ttitus@usgs.gov","orcid":"https://orcid.org/0000-0003-0700-4875","contributorId":146,"corporation":false,"usgs":true,"family":"Titus","given":"Timothy","email":"ttitus@usgs.gov","middleInitial":"N.","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":true,"id":441404,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ivanov, Anton B.","contributorId":213352,"corporation":false,"usgs":false,"family":"Ivanov","given":"Anton","email":"","middleInitial":"B.","affiliations":[{"id":7023,"text":"Jet Propulsion Laboratory, California Institute of Technology","active":true,"usgs":false}],"preferred":false,"id":441403,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Castano, Rebecca","contributorId":213353,"corporation":false,"usgs":false,"family":"Castano","given":"Rebecca","email":"","affiliations":[{"id":7023,"text":"Jet Propulsion Laboratory, California Institute of Technology","active":true,"usgs":false}],"preferred":false,"id":441402,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bandfield, Joshua L.","contributorId":140356,"corporation":false,"usgs":false,"family":"Bandfield","given":"Joshua","email":"","middleInitial":"L.","affiliations":[{"id":13469,"text":"Space Science Institute, Boulder, Colorado, USA","active":true,"usgs":false}],"preferred":false,"id":441401,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70033552,"text":"70033552 - 2008 - The influence of dissolved organic carbon on bacterial phosphorus uptake and bacteria-phytoplankton dynamics in two Minnesota lakes","interactions":[],"lastModifiedDate":"2012-03-12T17:21:32","indexId":"70033552","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2620,"text":"Limnology and Oceanography","active":true,"publicationSubtype":{"id":10}},"title":"The influence of dissolved organic carbon on bacterial phosphorus uptake and bacteria-phytoplankton dynamics in two Minnesota lakes","docAbstract":"The balance of production in any ecosystem is dependent on the flow of limiting nutrients into either the autotrophic or heterotrophic components of the food web. To understand one of the important controls on the flow of inorganic nutrients between phytoplankton and bacterioplankton in lakes, we manipulated dissolved organic carbon (DOC) in two lakes of different trophic status. We hypothesized that labile DOC additions would increase bacterial phosphorus (P) uptake and decrease the response of phytoplankton to nutrient additions. Supplemental nutrients and carbon (C), nitrogen (N, 1.6 ??mol NH4Cl L-1 d-1), P (0.1 ??mol KH 2PO4 L-1 d-1), and DOC (glucose, 15 ??mol C L-1 d-1) were added twice daily to 8-liter experimental units. We tested the effect of added DOC on chlorophyll concentration, bacterial production, biomass, and P uptake using size-fractionated 33P-PO4 uptake. In the oligotrophic lake, DOC additions stimulated bacterial production and increased bacterial biomass-specific P uptake. Bacteria consumed added DOC, and chlorophyll concentrations were significantly lower in carboys receiving DOC additions. In the eutrophic lake, DOC additions had less of a stimulatory effect on bacterial production and biomass-specific P uptake. DOC accumulated over the time period, and there was little evidence for a DOC-induced decrease in phytoplankton biomass. Bacterial growth approached the calculated ??max and yet did not accumulate biomass, indicating significant biomass losses, which may have constrained bacterial DOC consumption. Excess bacterial DOC consumption in oligotrophic lakes may result in greater bacterial P affinity and enhanced nutrient uptake by the heterotrophic compartment of the food web. On the other hand, constraints on bacterial biomass accumulation in eutrophic lakes, from either viral lysis or bacterial grazing, can allow labile DOC to accumulate, thereby negating the effect of excess DOC on the planktonic food web. ?? 2008, by the American Society of Limnology and Oceanography, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Limnology and Oceanography","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00243590","usgsCitation":"Stets, E., and Cotner, J., 2008, The influence of dissolved organic carbon on bacterial phosphorus uptake and bacteria-phytoplankton dynamics in two Minnesota lakes: Limnology and Oceanography, v. 53, no. 1, p. 137-147.","startPage":"137","endPage":"147","numberOfPages":"11","costCenters":[],"links":[{"id":242217,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"53","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bad1de4b08c986b3239a7","contributors":{"authors":[{"text":"Stets, E.G.","contributorId":52791,"corporation":false,"usgs":true,"family":"Stets","given":"E.G.","affiliations":[],"preferred":false,"id":441409,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cotner, J.B.","contributorId":95272,"corporation":false,"usgs":true,"family":"Cotner","given":"J.B.","affiliations":[],"preferred":false,"id":441410,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70032980,"text":"70032980 - 2008 - A fully distributed implementation of mean annual streamflow regional regression equations","interactions":[],"lastModifiedDate":"2017-04-03T12:49:45","indexId":"70032980","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"A fully distributed implementation of mean annual streamflow regional regression equations","docAbstract":"<p><span>Estimates of mean annual streamflow are needed for a variety of hydrologic assessments. Away from gage locations, regional regression equations that are a function of upstream area, precipitation, and temperature are commonly used. Geographic information systems technology has facilitated their use for projects, but traditional approaches using the polygon overlay operator have been too inefficient for national scale applications. As an alternative, the Elevation Derivatives for National Applications (EDNA) database was used as a framework for a fully distributed implementation of mean annual streamflow regional regression equations. The raster “flow accumulation” operator was used to efficiently achieve spatially continuous parameterization of the equations for every 30&nbsp;m grid cell of the conterminous United States (U.S.). Results were confirmed by comparing with measured flows at stations of the Hydro-Climatic Data Network, and their applications value demonstrated in the development of a national geospatial hydropower assessment. Interactive tools at the EDNA website make possible the fast and efficient query of mean annual streamflow for any location in the conterminous U.S., providing a valuable complement to other national initiatives (StreamStats and the National Hydrography Dataset Plus).</span></p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1752-1688.2008.00258.x","issn":"10934","usgsCitation":"Verdin, K., and Worstell, B., 2008, A fully distributed implementation of mean annual streamflow regional regression equations: Journal of the American Water Resources Association, v. 44, no. 6, p. 1537-1547, https://doi.org/10.1111/j.1752-1688.2008.00258.x.","productDescription":"11 p.","startPage":"1537","endPage":"1547","numberOfPages":"11","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":240708,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213116,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2008.00258.x"}],"volume":"44","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e3e4e4b0c8380cd462aa","contributors":{"authors":[{"text":"Verdin, K.L.","contributorId":66438,"corporation":false,"usgs":true,"family":"Verdin","given":"K.L.","email":"","affiliations":[],"preferred":false,"id":438816,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Worstell, B. 0000-0001-8927-3336","orcid":"https://orcid.org/0000-0001-8927-3336","contributorId":92059,"corporation":false,"usgs":true,"family":"Worstell","given":"B.","affiliations":[],"preferred":false,"id":438817,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70032976,"text":"70032976 - 2008 - Reply to Comments by Kelletat (2008) comments to Dawson, A.G. and Stewart, I. (2007) tsunami deposits in the geological record [Sedimentary Geology, 200, 166-183]","interactions":[],"lastModifiedDate":"2012-03-12T17:21:21","indexId":"70032976","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3368,"text":"Sedimentary Geology","active":true,"publicationSubtype":{"id":10}},"title":"Reply to Comments by Kelletat (2008) comments to Dawson, A.G. and Stewart, I. (2007) tsunami deposits in the geological record [Sedimentary Geology, 200, 166-183]","docAbstract":"[No abstract available]","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Sedimentary Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.sedgeo.2008.09.004","issn":"00370","usgsCitation":"Dawson, A., Stewart, I., Morton, R., Richmond, B.M., Jaffe, B.E., and Gelfenbaum, G., 2008, Reply to Comments by Kelletat (2008) comments to Dawson, A.G. and Stewart, I. (2007) tsunami deposits in the geological record [Sedimentary Geology, 200, 166-183]: Sedimentary Geology, v. 211, no. 3-4, p. 92-93, https://doi.org/10.1016/j.sedgeo.2008.09.004.","startPage":"92","endPage":"93","numberOfPages":"2","costCenters":[],"links":[{"id":213548,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.sedgeo.2008.09.004"},{"id":241182,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"211","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aa762e4b0c8380cd853ac","contributors":{"authors":[{"text":"Dawson, A.G.","contributorId":107939,"corporation":false,"usgs":true,"family":"Dawson","given":"A.G.","email":"","affiliations":[],"preferred":false,"id":438804,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stewart, I.","contributorId":31991,"corporation":false,"usgs":true,"family":"Stewart","given":"I.","email":"","affiliations":[],"preferred":false,"id":438799,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Morton, R.A.","contributorId":53849,"corporation":false,"usgs":true,"family":"Morton","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":438800,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Richmond, B. M.","contributorId":67902,"corporation":false,"usgs":true,"family":"Richmond","given":"B.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":438801,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Jaffe, B. E.","contributorId":88327,"corporation":false,"usgs":true,"family":"Jaffe","given":"B.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":438803,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Gelfenbaum, G.","contributorId":72429,"corporation":false,"usgs":true,"family":"Gelfenbaum","given":"G.","email":"","affiliations":[],"preferred":false,"id":438802,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70033553,"text":"70033553 - 2008 - Evaporite-karst problems and studies in the USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:32","indexId":"70033553","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Evaporite-karst problems and studies in the USA","docAbstract":"Evaporites, including rock salt (halite) and gypsum (or anhydrite), are the most soluble among common rocks; they dissolve readily to form the same types of karst features that commonly are found in limestones and dolomites. Evaporites are present in 32 of the 48 contiguous states in USA, and they underlie about 40% of the land area. Typical evaporite-karst features observed in outcrops include sinkholes, caves, disappearing streams, and springs, whereas other evidence of active evaporite karst includes surface-collapse structures and saline springs or saline plumes that result from salt dissolution. Many evaporites also contain evidence of paleokarst, such as dissolution breccias, breccia pipes, slumped beds, and collapse structures. All these natural karst phenomena can be sources of engineering or environmental problems. Dangerous sinkholes and caves can form rapidly in evaporite rocks, or pre-existing karst features can be reactivated and open up (collapse) under certain hydrologic conditions or when the land is put to new uses. Many karst features also propagate upward through overlying surficial deposits. Human activities also have caused development of evaporite karst, primarily in salt deposits. Boreholes (petroleum tests or solution-mining operations) or underground mines may enable unsaturated water to flow through or against salt deposits, either intentionally or accidentally, thus allowing development of small to large dissolution cavities. If the dissolution cavity is large enough and shallow enough, successive roof failures can cause land subsidence and/or catastrophic collapse. Evaporite karst, natural and human-induced, is far more prevalent than is commonly believed. ?? 2007 Springer-Verlag.","largerWorkTitle":"Environmental Geology","language":"English","doi":"10.1007/s00254-007-0716-8","issn":"09430105","usgsCitation":"Johnson, K., 2008, Evaporite-karst problems and studies in the USA, <i>in</i> Environmental Geology, v. 53, no. 5, p. 937-943, https://doi.org/10.1007/s00254-007-0716-8.","startPage":"937","endPage":"943","numberOfPages":"7","costCenters":[],"links":[{"id":214487,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00254-007-0716-8"},{"id":242218,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"53","issue":"5","noUsgsAuthors":false,"publicationDate":"2007-04-13","publicationStatus":"PW","scienceBaseUri":"505a0d16e4b0c8380cd52dfb","contributors":{"authors":[{"text":"Johnson, K.S.","contributorId":24385,"corporation":false,"usgs":true,"family":"Johnson","given":"K.S.","email":"","affiliations":[],"preferred":false,"id":441411,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70033555,"text":"70033555 - 2008 - Porewater biogeochemistry and soil metabolism in dwarf red mangrove habitats (Twin Cays, Belize)","interactions":[],"lastModifiedDate":"2012-03-12T17:21:32","indexId":"70033555","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1007,"text":"Biogeochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Porewater biogeochemistry and soil metabolism in dwarf red mangrove habitats (Twin Cays, Belize)","docAbstract":"Seasonal variability in biogeochemical signatures was used to elucidate the dominant pathways of soil microbial metabolism and elemental cycling in an oligotrophic mangrove system. Three interior dwarf mangrove habitats (Twin Cays, Belize) where surface soils were overlain by microbial mats were sampled during wet and dry periods of the year. Porewater equilibration meters and standard biogeochemical methods provided steady-state porewater profiles of pH, chloride, sulfate, sulfide, ammonium, nitrate/nitrite, phosphate, dissolved organic carbon, nitrogen, and phosphorus, reduced iron and manganese, dissolved inorganic carbon, methane and nitrous oxide. During the wet season, the salinity of overlying pond water and shallow porewaters decreased. Increased rainwater infiltration through soils combined with higher tidal heights appeared to result in increased organic carbon inventories and more reducing soil porewaters. During the dry season, evaporation increased both surface water and porewater salinities, while lower tidal heights resulted in less reduced soil porewaters. Rainfall strongly influenced inventories of dissolved organic carbon and nitrogen, possibly due to more rapid decay of mangrove litter during the wet season. During both times of year, high concentrations of reduced metabolites accumulated at depth, indicating substantial rates of organic matter mineralization coupled primarily to sulfate reduction. Nitrous oxide and methane concentrations were supersaturated indicating considerable rates of nitrification and/or incomplete denitrification and methanogenesis, respectively. More reducing soil conditions during the wet season promoted the production of reduced manganese. Contemporaneous activity of sulfate reduction and methanogenesis was likely fueled by the presence of noncompetitive substrates. The findings indicate that these interior dwarf areas are unique sites of nutrient and energy regeneration and may be critical to the overall persistence and productivity of mangrove-dominated islands in oligotrophic settings. ?? 2008 Springer Science+Business Media B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biogeochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10533-008-9176-9","issn":"01682563","usgsCitation":"Lee, R., Porubsky, W., Feller, I., McKee, K., and Joye, S., 2008, Porewater biogeochemistry and soil metabolism in dwarf red mangrove habitats (Twin Cays, Belize): Biogeochemistry, v. 87, no. 2, p. 181-198, https://doi.org/10.1007/s10533-008-9176-9.","startPage":"181","endPage":"198","numberOfPages":"18","costCenters":[],"links":[{"id":214517,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10533-008-9176-9"},{"id":242251,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"2","noUsgsAuthors":false,"publicationDate":"2008-01-31","publicationStatus":"PW","scienceBaseUri":"505a7dd3e4b0c8380cd7a1a9","contributors":{"authors":[{"text":"Lee, R.Y.","contributorId":49618,"corporation":false,"usgs":true,"family":"Lee","given":"R.Y.","email":"","affiliations":[],"preferred":false,"id":441417,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Porubsky, W.P.","contributorId":32000,"corporation":false,"usgs":true,"family":"Porubsky","given":"W.P.","email":"","affiliations":[],"preferred":false,"id":441416,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Feller, Ilka C.","contributorId":79990,"corporation":false,"usgs":true,"family":"Feller","given":"Ilka C.","affiliations":[],"preferred":false,"id":441419,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McKee, K.L. 0000-0001-7042-670X","orcid":"https://orcid.org/0000-0001-7042-670X","contributorId":77113,"corporation":false,"usgs":true,"family":"McKee","given":"K.L.","affiliations":[],"preferred":false,"id":441418,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Joye, S.B.","contributorId":97266,"corporation":false,"usgs":true,"family":"Joye","given":"S.B.","email":"","affiliations":[],"preferred":false,"id":441420,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70033560,"text":"70033560 - 2008 - Distribution of heavy metals and foraminiferal assemblages in sediments of Biscayne Bay, Florida, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:30","indexId":"70033560","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2220,"text":"Journal of Coastal Research","active":true,"publicationSubtype":{"id":10}},"title":"Distribution of heavy metals and foraminiferal assemblages in sediments of Biscayne Bay, Florida, USA","docAbstract":"Heavy-metal pollution is an issue of concern in estuaries influenced by agriculture, urban, and harbor activities. Foraminiferal assemblages have been shown to be effective indicators of pollution. Sediment samples (n = 110) from Biscayne Bay were analyzed for heavy metals, foraminiferal assemblages, and grain-size distribution. Highest Cu, Zn, Cr, Hg, Pb, and Ni concentrations were found closest to Miami and near the mouths of several canals along the western margin of the bay. Few samples exceeded limits of possible biological effects as defined by previous studies. Ammonia and Cribroelphidium, two known stress-tolerant genera, correlated positively with Cu, Zn, Hg, and Ni (r ??? 0.43). Symbiont-bearing foraminifers, Archaias, Laevipeneroplis, and Androsina, correlated negatively with Cu, Zn, Hg, and Ni (r ??? -0.26).","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Coastal Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2112/06-0666.1","issn":"07490208","usgsCitation":"Carnahan, E.A., Hoare, A., Hallock, P., Lidz, B.H., and Reich, C., 2008, Distribution of heavy metals and foraminiferal assemblages in sediments of Biscayne Bay, Florida, USA: Journal of Coastal Research, v. 24, no. 1, p. 159-169, https://doi.org/10.2112/06-0666.1.","startPage":"159","endPage":"169","numberOfPages":"11","costCenters":[],"links":[{"id":241789,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214099,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2112/06-0666.1"}],"volume":"24","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a02d9e4b0c8380cd50212","contributors":{"authors":[{"text":"Carnahan, E. A.","contributorId":107947,"corporation":false,"usgs":false,"family":"Carnahan","given":"E.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":441443,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hoare, A.M.","contributorId":20167,"corporation":false,"usgs":false,"family":"Hoare","given":"A.M.","email":"","affiliations":[],"preferred":false,"id":441439,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hallock, P.","contributorId":91263,"corporation":false,"usgs":false,"family":"Hallock","given":"P.","email":"","affiliations":[],"preferred":false,"id":441442,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lidz, B. H.","contributorId":30651,"corporation":false,"usgs":true,"family":"Lidz","given":"B.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":441440,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Reich, C. D. 0000-0002-2534-1456","orcid":"https://orcid.org/0000-0002-2534-1456","contributorId":36978,"corporation":false,"usgs":true,"family":"Reich","given":"C. D.","affiliations":[],"preferred":false,"id":441441,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70033561,"text":"70033561 - 2008 - Survival of dusky Canada goose goslings in relation to weather and annual nest success","interactions":[],"lastModifiedDate":"2020-09-10T18:49:44.853173","indexId":"70033561","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Survival of dusky Canada goose goslings in relation to weather and annual nest success","docAbstract":"<p><span>The dusky Canada goose (</span><i>Branta canadensis occidentalis</i><span>) population has been in long‐term decline, likely due to reduced breeding productivity, but gosling survival of this population had not been examined. We studied gosling survival in broods of radiomarked adult females on the western Copper River Delta, Alaska, USA, during 1997–1999 and 2001–2003. Survival estimates for dusky Canada goose goslings to 45 days (x̄ = 0.32) were below estimates from most previous studies of geese. Daily survival of goslings increased with age and decreased with date of hatch. Precipitation during the first 3 days post‐hatch was negatively related to gosling survival and this effect increased with date. Annual estimates of gosling survival were positively correlated with annual estimates of nest success, suggesting overlap in factors affecting nest and gosling survival. Nest success probably also directly affected gosling survival, because survival decreased with hatch date and more broods hatched from renests during years with low nest success. Gosling survival appears to play an important role in limiting current productivity of this population. Management directed at increasing nest success would likely also improve gosling survival. We recommend additional research directed at examining sources of gosling mortality and the link between nest success and gosling survival.</span></p>","language":"English","publisher":"The Wildlife Society","usgsCitation":"Fondell, T., Miller, D.A., Grand, J.B., and Anthony, R., 2008, Survival of dusky Canada goose goslings in relation to weather and annual nest success: Journal of Wildlife Management, v. 72, no. 7, p. 1614-1621.","productDescription":"8 p.","startPage":"1614","endPage":"1621","numberOfPages":"8","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":241790,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":378318,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://wildlife.onlinelibrary.wiley.com/doi/abs/10.2193/2007-480"}],"country":"United States","state":"Alaska","otherGeospatial":"Copper River Delta","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -145.58395385742188,\n              60.28545067753711\n            ],\n            [\n              -144.89730834960938,\n              60.28545067753711\n            ],\n            [\n              -144.89730834960938,\n              60.68797291639079\n            ],\n            [\n              -145.58395385742188,\n              60.68797291639079\n            ],\n            [\n              -145.58395385742188,\n              60.28545067753711\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"72","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba2cce4b08c986b31f981","contributors":{"authors":[{"text":"Fondell, T.F.","contributorId":11154,"corporation":false,"usgs":true,"family":"Fondell","given":"T.F.","email":"","affiliations":[],"preferred":false,"id":441445,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, David A.","contributorId":29193,"corporation":false,"usgs":false,"family":"Miller","given":"David","email":"","middleInitial":"A.","affiliations":[{"id":6911,"text":"Iowa State University","active":true,"usgs":false}],"preferred":false,"id":441447,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Grand, J. Barry 0000-0002-3576-4567 barry_grand@usgs.gov","orcid":"https://orcid.org/0000-0002-3576-4567","contributorId":579,"corporation":false,"usgs":true,"family":"Grand","given":"J.","email":"barry_grand@usgs.gov","middleInitial":"Barry","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":true,"id":441444,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Anthony, R Michael","contributorId":219603,"corporation":false,"usgs":false,"family":"Anthony","given":"R Michael","affiliations":[{"id":40038,"text":"USGS Alaska Science Center (Retired)","active":true,"usgs":false}],"preferred":false,"id":441446,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70033562,"text":"70033562 - 2008 - Relation between species assemblages of fishes and water quality in salt ponds and sloughs in South San Francisco Bay","interactions":[],"lastModifiedDate":"2018-09-26T09:58:11","indexId":"70033562","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3451,"text":"Southwestern Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"Relation between species assemblages of fishes and water quality in salt ponds and sloughs in South San Francisco Bay","docAbstract":"This study was conducted to characterize fishery resources inhabiting salt-evaporation ponds and sloughs in South San Francisco Bay, and to identify key environmental variables that influence distribution of fishes. The ponds, which were originally constructed and operated for commercial production of salt, have undergone preliminary modifications (installation of culverts, gates, and other water-control structures) in preparation for full restoration to mostly tidal wetlands over the next 2 decades. We sampled fish from two salt-pond complexes (Alviso complex and Eden Landing complex), each consisting of several pond systems and their associated sloughs. Cluster analysis of species of fish indicated that at least two species assemblages were present, one characteristic of ponds and the other characteristic of sloughs and slough-like ponds. The slough-like ponds exhibited water-quality conditions (especially salinity) that resembled conditions found in the sloughs. Pond fishes were represented by 12 species, whereas slough fishes were represented by 22 species. Except for bay pipefish (Syngnathus leptorhynchus), which was unique to ponds, all species present in ponds also were in sloughs and slough-like ponds. These results indicated that species of fish in ponds originated from the sloughs. According to canonical-discriminant analysis, four environmental variables were useful for discriminating between the two species assemblages. Most discriminatory power was contributed by the index of habitat connectivity, a measure of minimum distance that a fish must travel to reach a particular pond from the nearest slough. Apparently, as fish from sloughs enter and move through interconnected salt ponds, environmental stress factors increase in severity until only the more tolerant species remain. The most likely source of stress is salinity, because this variable was second in importance to the index of habitat connectivity in discriminating between the two species assemblages. Water temperature and concentration of dissolved oxygen also seemingly influenced spatial distribution of fishes, although they were less important than salinity.","language":"English","publisher":"Southwestern Association of Naturalists","doi":"10.1894/GG-26.1","issn":"00384909","usgsCitation":"Mejia, F., Saiki, M.K., and Takekawa, J.Y., 2008, Relation between species assemblages of fishes and water quality in salt ponds and sloughs in South San Francisco Bay: Southwestern Naturalist, v. 53, no. 3, p. 335-345, https://doi.org/10.1894/GG-26.1.","productDescription":"11 p.","startPage":"335","endPage":"345","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":241823,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214129,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1894/GG-26.1"}],"volume":"53","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50e4a646e4b0e8fec6cdc15f","contributors":{"authors":[{"text":"Mejia, F.","contributorId":73011,"corporation":false,"usgs":true,"family":"Mejia","given":"F.","email":"","affiliations":[],"preferred":false,"id":441450,"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":441448,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Takekawa, John Y. 0000-0003-0217-5907 john_takekawa@usgs.gov","orcid":"https://orcid.org/0000-0003-0217-5907","contributorId":176168,"corporation":false,"usgs":true,"family":"Takekawa","given":"John","email":"john_takekawa@usgs.gov","middleInitial":"Y.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":false,"id":441449,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70033563,"text":"70033563 - 2008 - Biodynamic modeling of PCB uptake by Macoma balthica and Corbicula fluminea from sediment amended with activated carbon","interactions":[],"lastModifiedDate":"2012-03-12T17:21:30","indexId":"70033563","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","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":"Biodynamic modeling of PCB uptake by Macoma balthica and Corbicula fluminea from sediment amended with activated carbon","docAbstract":"Activated carbon amendment was assessed in the laboratory as a remediation strategy for freshwater sediment contaminated with polychlorinated biphenyls (PCBs) from the Grasse River (near Massena, NY). Three end points were evaluated: aqueous equilibrium PCB concentration, uptake into semipermeable membrane devices (SPMDs), and 28-day bioaccumulation in the clam Corbicula fluminea. PCB uptake by water, SPMDs, and clams followed similar trends, with reductions increasing as a function of carbon dose. Average percent reductions in clam tissue PCBs were 67, 86, and 95% for activated carbon doses of 0.7, 1.3, and 2.5% dry wt, respectively. A biodynamic model that incorporates sediment geochemistry and dietary and aqueous uptake routes was found to agree well with observed uptake by C. fluminea in our laboratory test systems. Results from this study were compared to 28-day bioaccumulation experiments involving PCB-contaminated sediment from Hunters Point Naval Shipyard (San Francisco Bay, CA) and the clam Macoma balthica. Due to differences in feeding strategy, M. balthica deposit-feeds whereas C. fluminea filter-feeds, the relative importance of the aqueous uptake route is predicted to be much higher for C. fluminea than for M. balthica. Whereas M. balthica takes up approximately 90% of its body burden through sediment ingestion, C. fluminea only accumulates approximately 45% via this route. In both cases, results strongly suggest that it is the mass transfer of PCBs from native sediment to added carbon particles, not merely reductions in aqueous PCB concentrations, that effectively reduces PCB bioavailability and uptake by sediment-dwelling organisms. ?? 2008 American Chemical Society.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Science and Technology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1021/es070139a","issn":"0013936X","usgsCitation":"McLeod, P.B., Luoma, S., and Luthy, R., 2008, Biodynamic modeling of PCB uptake by Macoma balthica and Corbicula fluminea from sediment amended with activated carbon: Environmental Science & Technology, v. 42, no. 2, p. 484-490, https://doi.org/10.1021/es070139a.","startPage":"484","endPage":"490","numberOfPages":"7","costCenters":[],"links":[{"id":214130,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es070139a"},{"id":241824,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"42","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-12-12","publicationStatus":"PW","scienceBaseUri":"5059f14be4b0c8380cd4ab7b","contributors":{"authors":[{"text":"McLeod, Pamela B.","contributorId":76913,"corporation":false,"usgs":true,"family":"McLeod","given":"Pamela","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":441452,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Luoma, S. N.","contributorId":86353,"corporation":false,"usgs":true,"family":"Luoma","given":"S. N.","affiliations":[],"preferred":false,"id":441453,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Luthy, R.G.","contributorId":36335,"corporation":false,"usgs":true,"family":"Luthy","given":"R.G.","email":"","affiliations":[],"preferred":false,"id":441451,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70033657,"text":"70033657 - 2008 - Optically stimulated luminescence age controls on late Pleistocene and Holocene coastal lithosomes, North Carolina, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:31","indexId":"70033657","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"Optically stimulated luminescence age controls on late Pleistocene and Holocene coastal lithosomes, North Carolina, USA","docAbstract":"Luminescence ages from a variety of coastal features on the North Carolina Coastal Plain provide age control for shoreline formation and relative sea-level position during the late Pleistocene. A series of paleoshoreline ridges, dating to Marine Isotope Stage (MIS) 5a and MIS 3 have been defined. The Kitty Hawk beach ridges, on the modern Outer Banks, yield ages of 3 to 2??ka. Oxygen-isotope data are used to place these deposits in the context of global climate and sea-level change. The occurrence of MIS 5a and MIS 3 shorelines suggests that glacio-isostatic adjustment (GIA) of the study area is large (ca. 22 to 26??m), as suggested and modeled by other workers, and/or MIS 3 sea level was briefly higher than suggested by some coral reef studies. Correcting the shoreline elevations for GIA brings their elevation in line with other sea-level indicators. The age of the Kitty Hawk beach ridges places the Holocene shoreline well west of its present location at ca. 3 to 2??ka. The age of shoreline progradation is consistent with the ages of other beach ridge complexes in the southeast USA, suggesting some regionally contemporaneous forcing mechanism. ?? 2007 University of Washington.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Quaternary Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.yqres.2007.10.002","issn":"00335894","usgsCitation":"Mallinson, D., Burdette, K., Mahan, S., and Brook, G., 2008, Optically stimulated luminescence age controls on late Pleistocene and Holocene coastal lithosomes, North Carolina, USA: Quaternary Research, v. 69, no. 1, p. 97-109, https://doi.org/10.1016/j.yqres.2007.10.002.","startPage":"97","endPage":"109","numberOfPages":"13","costCenters":[],"links":[{"id":214169,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.yqres.2007.10.002"},{"id":241863,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"69","issue":"1","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"505a6ed8e4b0c8380cd75823","contributors":{"authors":[{"text":"Mallinson, D.","contributorId":93686,"corporation":false,"usgs":true,"family":"Mallinson","given":"D.","affiliations":[],"preferred":false,"id":441859,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Burdette, K.","contributorId":43635,"corporation":false,"usgs":true,"family":"Burdette","given":"K.","email":"","affiliations":[],"preferred":false,"id":441858,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mahan, S.","contributorId":98894,"corporation":false,"usgs":true,"family":"Mahan","given":"S.","email":"","affiliations":[],"preferred":false,"id":441860,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brook, G.","contributorId":38436,"corporation":false,"usgs":true,"family":"Brook","given":"G.","email":"","affiliations":[],"preferred":false,"id":441857,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70032967,"text":"70032967 - 2008 - Thermal stability of ladderane lipids as determined by hydrous pyrolysis","interactions":[],"lastModifiedDate":"2012-03-12T17:21:36","indexId":"70032967","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2958,"text":"Organic Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Thermal stability of ladderane lipids as determined by hydrous pyrolysis","docAbstract":"Anaerobic ammonium oxidation (anammox) has been recognized as a major process resulting in loss of fixed inorganic nitrogen in the marine environment. Ladderane lipids, membrane lipids unique to anammox bacteria, have been used as markers for the detection of anammox in marine settings. However, the fate of ladderane lipids after sediment burial and maturation is unknown. In this study, anammox bacterial cell material was artificially matured by hydrous pyrolysis at constant temperatures ranging from 120 to 365 ??C for 72 h to study the stability of ladderane lipids during progressive dia- and catagenesis. HPLC-MS/MS analysis revealed that structural alterations of ladderane lipids already occurred at 120 ??C. At temperatures >140 ??C, ladderane lipids were absent and only more thermally stable products could be detected, i.e., ladderane derivatives in which some of the cyclobutane rings were opened. These diagenetic products of ladderane lipids were still detectable up to temperatures of 260 ??C using GC-MS. Thus, ladderane lipids are unlikely to occur in ancient sediments and sedimentary rocks, but specific diagenetic products of ladderane lipids will likely be present in sediments and sedimentary rocks of relatively low maturity (i.e., C31 hopane 22S/(22S + 22R) ratio <0.2 or ????/(???? + ???? + ????) ratio of >0.5). ?? 2008 Elsevier Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Organic Geochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.orggeochem.2008.08.006","issn":"01466","usgsCitation":"Jaeschke, A., Lewan, M.D., Hopmans, E., Schouten, S., and Sinninghe, D.J., 2008, Thermal stability of ladderane lipids as determined by hydrous pyrolysis: Organic Geochemistry, v. 39, no. 12, p. 1735-1741, https://doi.org/10.1016/j.orggeochem.2008.08.006.","startPage":"1735","endPage":"1741","numberOfPages":"7","costCenters":[],"links":[{"id":213385,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.orggeochem.2008.08.006"},{"id":241006,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"39","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb25be4b08c986b325758","contributors":{"authors":[{"text":"Jaeschke, A.","contributorId":20984,"corporation":false,"usgs":true,"family":"Jaeschke","given":"A.","email":"","affiliations":[],"preferred":false,"id":438741,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lewan, M. D.","contributorId":46540,"corporation":false,"usgs":true,"family":"Lewan","given":"M.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":438744,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hopmans, E.C.","contributorId":30454,"corporation":false,"usgs":true,"family":"Hopmans","given":"E.C.","email":"","affiliations":[],"preferred":false,"id":438742,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Schouten, S.","contributorId":7064,"corporation":false,"usgs":true,"family":"Schouten","given":"S.","email":"","affiliations":[],"preferred":false,"id":438740,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sinninghe, Damste J.S.","contributorId":35484,"corporation":false,"usgs":true,"family":"Sinninghe","given":"Damste","email":"","middleInitial":"J.S.","affiliations":[],"preferred":false,"id":438743,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70033659,"text":"70033659 - 2008 - Using amplified fragment length polymorphism analysis to differentiate isolates of Pasteurella multocida serotype 1","interactions":[],"lastModifiedDate":"2022-04-06T16:28:39.317025","indexId":"70033659","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2507,"text":"Journal of Wildlife Diseases","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Using amplified fragment length polymorphism analysis to differentiate isolates of <i>Pasteurella multocida</i> serotype 1","title":"Using amplified fragment length polymorphism analysis to differentiate isolates of Pasteurella multocida serotype 1","docAbstract":"<p>Avian cholera, an infectious disease caused by the bacterium<span>&nbsp;</span><i>Pasteurella multocida</i>, kills thousands of North American wild waterfowl annually.<span>&nbsp;</span><i>Pasteurella multocida</i><span>&nbsp;</span>serotype 1 isolates cultured during a laboratory challenge study of Mallards (<i>Anas platyrhynchos</i>) and collected from wild birds and environmental samples during avian cholera outbreaks were characterized using amplified fragment length polymorphism (AFLP) analysis, a whole-genome DNA fingerprinting technique. Comparison of the AFLP profiles of 53 isolates from the laboratory challenge demonstrated that<span>&nbsp;</span><i>P. multocida</i><span>&nbsp;</span>underwent genetic changes during a 3-mo period. Analysis of 120<span>&nbsp;</span><i>P. multocida</i><span>&nbsp;</span>serotype 1 isolates collected from wild birds and environmental samples revealed that isolates were distinguishable from one another based on regional and temporal genetic characteristics. Thus, AFLP analysis had the ability to distinguish<span>&nbsp;</span><i>P. multocida</i><span>&nbsp;</span>isolates of the same serotype by detecting spatiotemporal genetic changes and provides a tool to advance the study of avian cholera epidemiology. Further application of AFLP technology to the examination of wild bird avian cholera outbreaks may facilitate more effective management of this disease by providing the potential to investigate correlations between virulence and<span>&nbsp;</span><i>P. multocida</i><span>&nbsp;</span>genotypes, to identify affiliations between bird species and bacterial genotypes, and to elucidate the role of specific bird species in disease transmission.</p>","language":"English","doi":"10.7589/0090-3558-44.2.209","issn":"00903558","usgsCitation":"Blehert, D.S., Jefferson, K.L., Heisey, D.M., Samuel, M.D., Berlowski-Zier, B.M., and Shadduck, D.J., 2008, Using amplified fragment length polymorphism analysis to differentiate isolates of Pasteurella multocida serotype 1: Journal of Wildlife Diseases, v. 44, no. 2, p. 209-225, https://doi.org/10.7589/0090-3558-44.2.209.","productDescription":"17 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}\n  ]\n}","volume":"44","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc02ce4b08c986b329f8c","contributors":{"authors":[{"text":"Blehert, David S. 0000-0002-1065-9760 dblehert@usgs.gov","orcid":"https://orcid.org/0000-0002-1065-9760","contributorId":140397,"corporation":false,"usgs":true,"family":"Blehert","given":"David","email":"dblehert@usgs.gov","middleInitial":"S.","affiliations":[{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"preferred":true,"id":441863,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jefferson, K. L.","contributorId":63634,"corporation":false,"usgs":true,"family":"Jefferson","given":"K.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":441864,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Heisey, Dennis M. dheisey@usgs.gov","contributorId":2455,"corporation":false,"usgs":true,"family":"Heisey","given":"Dennis","email":"dheisey@usgs.gov","middleInitial":"M.","affiliations":[{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"preferred":true,"id":441867,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Samuel, M. D.","contributorId":118368,"corporation":false,"usgs":true,"family":"Samuel","given":"M.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":441862,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Berlowski-Zier, Brenda M. 0000-0002-7922-8352 bberlowski-zier@usgs.gov","orcid":"https://orcid.org/0000-0002-7922-8352","contributorId":4288,"corporation":false,"usgs":true,"family":"Berlowski-Zier","given":"Brenda","email":"bberlowski-zier@usgs.gov","middleInitial":"M.","affiliations":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"preferred":false,"id":441866,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Shadduck, Daniel J.","contributorId":77499,"corporation":false,"usgs":true,"family":"Shadduck","given":"Daniel","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":441865,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70033664,"text":"70033664 - 2008 - Influence of fipronil compounds and rice-cultivation land-use intensity on macroinvertebrate communities in streams of southwestern Louisiana, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:30","indexId":"70033664","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1555,"text":"Environmental Pollution","active":true,"publicationSubtype":{"id":10}},"title":"Influence of fipronil compounds and rice-cultivation land-use intensity on macroinvertebrate communities in streams of southwestern Louisiana, USA","docAbstract":"Laboratory tests of fipronil and its degradation products have revealed acute lethal toxicity at very low concentrations (LC50) of <0.5 ??g/L to selected aquatic macroinvertebrates. In streams draining basins with intensive rice cultivation in southwestern Louisiana, USA, concentrations of fipronil compounds were an order of magnitude larger than the LC50. The abundance (?? = -0.64; p = 0.015) and taxa richness (r2 = 0.515, p < 0.005) of macroinvertebrate communities declined significantly with increases in concentrations of fipronil compounds and rice-cultivation land-use intensity. Macroinvertebrate community tolerance scores increased linearly (r2 = 0.442, p < 0.005) with increases in the percentage of rice cultivation in the basins, indicating increasingly degraded stream conditions. Similarly, macroinvertebrate community-tolerance scores increased rapidly as fipronil concentrations approached about 1 ??g/L. Pesticide toxicity index determinations indicated that aquatic macroinvertebrates respond to a gradient of fipronil compounds in water although stream size and habitat cannot be ruled out as contributing influences.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Pollution","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.envpol.2007.03.021","issn":"02697491","usgsCitation":"Mize, S., Porter, S.D., and Demcheck, D., 2008, Influence of fipronil compounds and rice-cultivation land-use intensity on macroinvertebrate communities in streams of southwestern Louisiana, USA: Environmental Pollution, v. 152, no. 2, p. 491-503, https://doi.org/10.1016/j.envpol.2007.03.021.","startPage":"491","endPage":"503","numberOfPages":"13","costCenters":[],"links":[{"id":214256,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.envpol.2007.03.021"},{"id":241958,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"152","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3b33e4b0c8380cd622f1","contributors":{"authors":[{"text":"Mize, S.V.","contributorId":93666,"corporation":false,"usgs":true,"family":"Mize","given":"S.V.","email":"","affiliations":[],"preferred":false,"id":441889,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Porter, S. D.","contributorId":8882,"corporation":false,"usgs":true,"family":"Porter","given":"S.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":441887,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Demcheck, D.K.","contributorId":87968,"corporation":false,"usgs":true,"family":"Demcheck","given":"D.K.","affiliations":[],"preferred":false,"id":441888,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70033666,"text":"70033666 - 2008 - An empirical study of statistical properties of variance partition coefficients for multi-level logistic regression models","interactions":[],"lastModifiedDate":"2012-03-12T17:21:30","indexId":"70033666","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1283,"text":"Communications in Statistics: Simulation and Computation","active":true,"publicationSubtype":{"id":10}},"title":"An empirical study of statistical properties of variance partition coefficients for multi-level logistic regression models","docAbstract":"Partitioning the variance of a response by design levels is challenging for binomial and other discrete outcomes. Goldstein (2003) proposed four definitions for variance partitioning coefficients (VPC) under a two-level logistic regression model. In this study, we explicitly derived formulae for multi-level logistic regression model and subsequently studied the distributional properties of the calculated VPCs. Using simulations and a vegetation dataset, we demonstrated associations between different VPC definitions, the importance of methods for estimating VPCs (by comparing VPC obtained using Laplace and penalized quasilikehood methods), and bivariate dependence between VPCs calculated at different levels. Such an empirical study lends an immediate support to wider applications of VPC in scientific data analysis.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Communications in Statistics: Simulation and Computation","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1080/03610910802361366","issn":"03610","usgsCitation":"Li, J., Gray, B., and Bates, D., 2008, An empirical study of statistical properties of variance partition coefficients for multi-level logistic regression models: Communications in Statistics: Simulation and Computation, v. 37, no. 10, p. 2010-2026, https://doi.org/10.1080/03610910802361366.","startPage":"2010","endPage":"2026","numberOfPages":"17","costCenters":[],"links":[{"id":495020,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://scholarbank.nus.edu.sg/handle/10635/104996","text":"External Repository"},{"id":214285,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/03610910802361366"},{"id":241991,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"37","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ea38e4b0c8380cd486ff","contributors":{"authors":[{"text":"Li, Ji","contributorId":22916,"corporation":false,"usgs":true,"family":"Li","given":"Ji","email":"","affiliations":[],"preferred":false,"id":441895,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gray, B. R. 0000-0001-7682-9550","orcid":"https://orcid.org/0000-0001-7682-9550","contributorId":14785,"corporation":false,"usgs":true,"family":"Gray","given":"B. R.","affiliations":[],"preferred":false,"id":441894,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bates, D.M.","contributorId":102347,"corporation":false,"usgs":true,"family":"Bates","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":441896,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70033669,"text":"70033669 - 2008 - Removal of dissolved organic matter by anion exchange: Effect of dissolved organic matter properties","interactions":[],"lastModifiedDate":"2018-10-22T09:32:20","indexId":"70033669","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","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":"Removal of dissolved organic matter by anion exchange: Effect of dissolved organic matter properties","docAbstract":"<div class=\"hlFld-Abstract\"><div id=\"abstractBox\"><p class=\"articleBody_abstractText\">Ten isolates of aquatic dissolved organic matter (DOM) were evaluated to determine the effect that chemical properties of the DOM, such as charge density, aromaticity, and molecular weight, have on DOM removal by anion exchange. The DOM isolates were characterized as terrestrial, microbial, or intermediate humic substances or transphilic acids. All anion exchange experiments were conducted using a magnetic ion exchange (MIEX) resin. The charge density of the DOM isolates, determined by direct potentiometric titration, was fundamental to quantifying the stoichiometry of the anion exchange mechanism. The results clearly show that all DOM isolates were removed by anion exchange; however, differences among the DOM isolates did influence their removal by MIEX resin. In particular, MIEX resin had the greatest affinity for DOM with high charge density and the least affinity for DOM with low charge density and low aromaticity. This work illustrates that the chemical characteristics of DOM and solution conditions must be considered when evaluating anion exchange treatment for the removal of DOM.</p></div></div>","language":"English","publisher":"ACS","doi":"10.1021/es800714d","issn":"00139","usgsCitation":"Boyer, T., Singer, P., and Aiken, G., 2008, Removal of dissolved organic matter by anion exchange: Effect of dissolved organic matter properties: Environmental Science & Technology, v. 42, no. 19, p. 7431-7437, https://doi.org/10.1021/es800714d.","productDescription":"7 p.","startPage":"7431","endPage":"7437","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":242060,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214341,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es800714d"}],"volume":"42","issue":"19","noUsgsAuthors":false,"publicationDate":"2008-08-28","publicationStatus":"PW","scienceBaseUri":"505aa72ae4b0c8380cd85270","contributors":{"authors":[{"text":"Boyer, T.H.","contributorId":49992,"corporation":false,"usgs":true,"family":"Boyer","given":"T.H.","email":"","affiliations":[],"preferred":false,"id":441909,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Singer, P.C.","contributorId":80424,"corporation":false,"usgs":true,"family":"Singer","given":"P.C.","email":"","affiliations":[],"preferred":false,"id":441910,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Aiken, G. R. 0000-0001-8454-0984","orcid":"https://orcid.org/0000-0001-8454-0984","contributorId":14452,"corporation":false,"usgs":true,"family":"Aiken","given":"G. R.","affiliations":[],"preferred":false,"id":441908,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70032962,"text":"70032962 - 2008 - Aquatic macroinvertebrates associated with Schoenoplectus litter in a constructed wetland in California (USA)","interactions":[],"lastModifiedDate":"2012-03-12T17:21:37","indexId":"70032962","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1454,"text":"Ecological Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Aquatic macroinvertebrates associated with Schoenoplectus litter in a constructed wetland in California (USA)","docAbstract":"Culm processing characteristics were associated with differences in invertebrate density in a study of invertebrates and senesced culm packs in a constructed treatment wetland. Invertebrate abundance differed by location within the wetland and there were differences between the two study years that appeared to be related to water quality and condition of culm material. Open areas in the wetland appeared to be critical in providing dissolved oxygen (DO) and food (plankton) to the important invertebrate culm processor, Glyptotendipes. As culm packs aged, invertebrate assemblages became less diverse and eventually supported mostly tubificid worms and leeches. It appears from this study that wetland design is vital to processing of plant material and that designs that encourage production and maintenance of high DO's will encourage microbial and invertebrate processing of material.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecological Engineering","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.ecoleng.2007.12.012","issn":"09258574","usgsCitation":"Nelson, S.M., and Thullen, J., 2008, Aquatic macroinvertebrates associated with Schoenoplectus litter in a constructed wetland in California (USA): Ecological Engineering, v. 33, no. 2, p. 91-101, https://doi.org/10.1016/j.ecoleng.2007.12.012.","startPage":"91","endPage":"101","numberOfPages":"11","costCenters":[],"links":[{"id":213326,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.ecoleng.2007.12.012"},{"id":240939,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ed11e4b0c8380cd495dd","contributors":{"authors":[{"text":"Nelson, S. M.","contributorId":81853,"corporation":false,"usgs":false,"family":"Nelson","given":"S.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":438727,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thullen, J.S.","contributorId":16361,"corporation":false,"usgs":true,"family":"Thullen","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":438726,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70032961,"text":"70032961 - 2008 - Methane hydrate formation in turbidite sediments of northern Cascadia, IODP Expedition 311","interactions":[],"lastModifiedDate":"2012-03-12T17:21:37","indexId":"70032961","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1427,"text":"Earth and Planetary Science Letters","active":true,"publicationSubtype":{"id":10}},"title":"Methane hydrate formation in turbidite sediments of northern Cascadia, IODP Expedition 311","docAbstract":"Expedition 311 of the Integrated Ocean Drilling Program (IODP) to northern Cascadia recovered gas-hydrate bearing sediments along a SW-NE transect from the first ridge of the accretionary margin to the eastward limit of gas-hydrate stability. In this study we contrast the gas gas-hydrate distribution from two sites drilled ~ 8??km apart in different tectonic settings. At Site U1325, drilled on a depositional basin with nearly horizontal sedimentary sequences, the gas-hydrate distribution shows a trend of increasing saturation toward the base of gas-hydrate stability, consistent with several model simulations in the literature. Site U1326 was drilled on an uplifted ridge characterized by faulting, which has likely experienced some mass wasting events. Here the gas hydrate does not show a clear depth-distribution trend, the highest gas-hydrate saturation occurs well within the gas-hydrate stability zone at the shallow depth of ~ 49??mbsf. Sediments at both sites are characterized by abundant coarse-grained (sand) layers up to 23??cm in thickness, and are interspaced within fine-grained (clay and silty clay) detrital sediments. The gas-hydrate distribution is punctuated by localized depth intervals of high gas-hydrate saturation, which preferentially occur in the coarse-grained horizons and occupy up to 60% of the pore space at Site U1325 and > 80% at Site U1326. Detailed analyses of contiguous samples of different lithologies show that when enough methane is present, about 90% of the variance in gas-hydrate saturation can be explained by the sand (> 63????m) content of the sediments. The variability in gas-hydrate occupancy of sandy horizons at Site U1326 reflects an insufficient methane supply to the sediment section between 190 and 245??mbsf. ?? 2008 Elsevier B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Earth and Planetary Science Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.epsl.2008.03.061","issn":"0012821X","usgsCitation":"Torres, M., Trehu, A., Cespedes, N., Kastner, M., Wortmann, U., Kim, J., Long, P., Malinverno, A., Pohlman, J., Riedel, M., and Collett, T., 2008, Methane hydrate formation in turbidite sediments of northern Cascadia, IODP Expedition 311: Earth and Planetary Science Letters, v. 271, no. 1-4, p. 170-180, https://doi.org/10.1016/j.epsl.2008.03.061.","startPage":"170","endPage":"180","numberOfPages":"11","costCenters":[],"links":[{"id":213296,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.epsl.2008.03.061"},{"id":240908,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"271","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5529e4b0c8380cd6d14d","contributors":{"authors":[{"text":"Torres, M.E.","contributorId":58443,"corporation":false,"usgs":true,"family":"Torres","given":"M.E.","email":"","affiliations":[],"preferred":false,"id":438721,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Trehu, A.M.","contributorId":90754,"corporation":false,"usgs":true,"family":"Trehu","given":"A.M.","email":"","affiliations":[],"preferred":false,"id":438725,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cespedes, N.","contributorId":53171,"corporation":false,"usgs":true,"family":"Cespedes","given":"N.","email":"","affiliations":[],"preferred":false,"id":438720,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kastner, M.","contributorId":21276,"corporation":false,"usgs":true,"family":"Kastner","given":"M.","email":"","affiliations":[],"preferred":false,"id":438716,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wortmann, U.G.","contributorId":25001,"corporation":false,"usgs":true,"family":"Wortmann","given":"U.G.","email":"","affiliations":[],"preferred":false,"id":438717,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kim, J.-H.","contributorId":26395,"corporation":false,"usgs":true,"family":"Kim","given":"J.-H.","email":"","affiliations":[],"preferred":false,"id":438718,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Long, P.","contributorId":8628,"corporation":false,"usgs":true,"family":"Long","given":"P.","email":"","affiliations":[],"preferred":false,"id":438715,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Malinverno, A.","contributorId":70919,"corporation":false,"usgs":true,"family":"Malinverno","given":"A.","affiliations":[],"preferred":false,"id":438724,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Pohlman, J. W. 0000-0002-3563-4586","orcid":"https://orcid.org/0000-0002-3563-4586","contributorId":38362,"corporation":false,"usgs":true,"family":"Pohlman","given":"J. W.","affiliations":[],"preferred":false,"id":438719,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Riedel, M.","contributorId":65268,"corporation":false,"usgs":true,"family":"Riedel","given":"M.","email":"","affiliations":[],"preferred":false,"id":438723,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Collett, T. 0000-0002-7598-4708","orcid":"https://orcid.org/0000-0002-7598-4708","contributorId":62780,"corporation":false,"usgs":true,"family":"Collett","given":"T.","affiliations":[],"preferred":false,"id":438722,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}}
,{"id":70033702,"text":"70033702 - 2008 - Modeling variability and trends in pesticide concentrations in streams","interactions":[],"lastModifiedDate":"2012-03-12T17:21:30","indexId":"70033702","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Modeling variability and trends in pesticide concentrations in streams","docAbstract":"A parametric regression model was developed for assessing the variability and long-term trends in pesticide concentrations in streams. The dependent variable is the logarithm of pesticide concentration and the explanatory variables are a seasonal wave, which represents the seasonal variability of concentration in response to seasonal application rates; a streamflow anomaly, which is the deviation of concurrent daily streamflow from average conditions for the previous 30 days; and a trend, which represents long-term (inter-annual) changes in concentration. Application of the model to selected herbicides and insecticides in four diverse streams indicated the model is robust with respect to pesticide type, stream location, and the degree of censoring (proportion of nondetections). An automatic model fitting and selection procedure for the seasonal wave and trend components was found to perform well for the datasets analyzed. Artificial censoring scenarios were used in a Monte Carlo simulation analysis to show that the fitted trends were unbiased and the approximate p-values were accurate for as few as 10 uncensored concentrations during a three-year period, assuming a sampling frequency of 15 samples per year. Trend estimates for the full model were compared with a model without the streamflow anomaly and a model in which the seasonality was modeled using standard trigonometric functions, rather than seasonal application rates. Exclusion of the streamflow anomaly resulted in substantial increases in the mean-squared error and decreases in power for detecting trends. Incorrectly modeling the seasonal structure of the concentration data resulted in substantial estimation bias and moderate increases in mean-squared error and decreases in power. ?? 2008 American Water Resources Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the American Water Resources Association","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1752-1688.2008.00225.x","issn":"10934","usgsCitation":"Vecchia, A.V., Martin, J., and Gilliom, R.J., 2008, Modeling variability and trends in pesticide concentrations in streams: Journal of the American Water Resources Association, v. 44, no. 5, p. 1308-1324, https://doi.org/10.1111/j.1752-1688.2008.00225.x.","startPage":"1308","endPage":"1324","numberOfPages":"17","costCenters":[],"links":[{"id":214315,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2008.00225.x"},{"id":242030,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"44","issue":"5","noUsgsAuthors":false,"publicationDate":"2008-10-08","publicationStatus":"PW","scienceBaseUri":"505a5c5ae4b0c8380cd6fc15","contributors":{"authors":[{"text":"Vecchia, A. V.","contributorId":23533,"corporation":false,"usgs":true,"family":"Vecchia","given":"A.","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":442052,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Martin, Jeffrey D.","contributorId":40609,"corporation":false,"usgs":true,"family":"Martin","given":"Jeffrey D.","affiliations":[],"preferred":false,"id":442053,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gilliom, R. J.","contributorId":60650,"corporation":false,"usgs":true,"family":"Gilliom","given":"R.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":442054,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
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