Terrestrial carbon dynamics influence the contribution of dissolved organic carbon (DOC) to river networks in addition to hydrology. In this study, we use a biogeochemical process model to simulate the lateral transfer of DOC from land to the Arctic Ocean via riverine transport. We estimate that, over the 20th century, the pan-Arctic watershed has contributed, on average, 32 Tg C/yr of DOC to river networks emptying into the Arctic Ocean with most of the DOC coming from the extensive area of boreal deciduous needle-leaved forests and forested wetlands in Eurasian watersheds. We also estimate that the rate of terrestrial DOC loading has been increasing by 0.037 Tg C/yr2 over the 20th century primarily as a result of climate-induced increases in water yield. These increases have been offset by decreases in terrestrial DOC loading caused by wildfires. Other environmental factors (CO2 fertilization, ozone pollution, atmospheric nitrogen deposition, timber harvest, agriculture) are estimated to have relatively small effects on terrestrial DOC loading to Arctic rivers. The effects of the various environmental factors on terrestrial carbon dynamics have both offset and enhanced concurrent effects on hydrology to influence terrestrial DOC loading and may be changing the relative importance of terrestrial carbon dynamics on this carbon flux. Improvements in simulating terrestrial DOC loading to pan-Arctic rivers in the future will require better information on the production and consumption of DOC within the soil profile, the transfer of DOC from land to headwater streams, the spatial distribution of precipitation and its temporal trends, carbon dynamics of larch-dominated ecosystems in eastern Siberia, and the role of industrial organic effluents on carbon budgets of rivers in western Russia.
","language":"English","publisher":"Ecological Society of America","doi":"10.1890/11-1050.1","usgsCitation":"Kicklighter, D.W., Hayes, D.J., McClelland, J.W., Peterson, B.J., McGuire, A., and Melillo, J.M., 2013, Insights and issues with simulating terrestrial DOC loading of Arctic river networks: Ecological Applications, v. 23, no. 8, p. 1817-1836, https://doi.org/10.1890/11-1050.1.","productDescription":"20 p.","startPage":"1817","endPage":"1836","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-032239","costCenters":[{"id":108,"text":"Alaska Cooperative Fish and Wildlife Research Unit","active":false,"usgs":true}],"links":[{"id":473368,"rank":0,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hdl.handle.net/1912/6466","text":"External Repository"},{"id":282846,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":282845,"type":{"id":11,"text":"Document"},"url":"https://www.lter.uaf.edu/pdf/1632_Kicklighter_Hayes_2013.pdf"}],"otherGeospatial":"Arctic","volume":"23","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd62a5e4b0b290850fe513","contributors":{"authors":[{"text":"Kicklighter, David W.","contributorId":48872,"corporation":false,"usgs":false,"family":"Kicklighter","given":"David","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":464295,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hayes, Daniel J.","contributorId":100237,"corporation":false,"usgs":true,"family":"Hayes","given":"Daniel","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":464299,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McClelland, James W.","contributorId":94905,"corporation":false,"usgs":true,"family":"McClelland","given":"James","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":464298,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Peterson, Bruce J.","contributorId":62453,"corporation":false,"usgs":true,"family":"Peterson","given":"Bruce","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":464296,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"McGuire, A. David","contributorId":18494,"corporation":false,"usgs":true,"family":"McGuire","given":"A. David","affiliations":[],"preferred":false,"id":464294,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Melillo, Jerry M.","contributorId":87847,"corporation":false,"usgs":false,"family":"Melillo","given":"Jerry","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":464297,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70154903,"text":"70154903 - 2013 - A computer model to forecast wetland vegetation changes resulting from restoration and protection in coastal Louisiana","interactions":[],"lastModifiedDate":"2015-07-14T11:26:54","indexId":"70154903","displayToPublicDate":"2014-01-01T12:15:00","publicationYear":"2013","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":"A computer model to forecast wetland vegetation changes resulting from restoration and protection in coastal Louisiana","docAbstract":"The coastal wetlands of Louisiana are a unique ecosystem that supports a diversity of wildlife as well as a diverse community of commercial interests of both local and national importance. The state of Louisiana has established a 5-year cycle of scientific investigation to provide up-to-date information to guide future legislation and regulation aimed at preserving this critical ecosystem. Here we report on a model that projects changes in plant community distribution and composition in response to environmental conditions. This model is linked to a suite of other models and requires input from those that simulate the hydrology and morphology of coastal Louisiana. Collectively, these models are used to assess how alternative management plans may affect the wetland ecosystem through explicit spatial modeling of the physical and biological processes affected by proposed modifications to the ecosystem. We have also taken the opportunity to advance the state-of-the-art in wetland plant community modeling by using a model that is more species-based in its description of plant communities instead of one based on aggregated community types such as brackish marsh and saline marsh. The resulting model provides an increased level of ecological detail about how wetland communities are expected to respond. In addition, the output from this model provides critical inputs for estimating the effects of management on higher trophic level species though a more complete description of the shifts in habitat.
","language":"English","publisher":"Coastal Education and Research Foundation, BioOne","doi":"10.2112/SI_67_4","usgsCitation":"Visser, J.M., Duke-Sylvester, S., Carter, J., and Broussard, W.P., 2013, A computer model to forecast wetland vegetation changes resulting from restoration and protection in coastal Louisiana: Journal of Coastal Research, no. 67, p. 51-59, https://doi.org/10.2112/SI_67_4.","productDescription":"9 p.","startPage":"51","endPage":"59","numberOfPages":"9","onlineOnly":"Y","additionalOnlineFiles":"N","ipdsId":"IP-042146","costCenters":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true}],"links":[{"id":305704,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":305597,"type":{"id":15,"text":"Index Page"},"url":"https://dx.doi.org/10.2112/SI_67_4"}],"country":"United States","state":"Louisiana","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -93.878173828125,\n 29.008140362978157\n ],\n [\n -93.878173828125,\n 30.183121842195515\n ],\n [\n -88.934326171875,\n 30.183121842195515\n ],\n [\n -88.934326171875,\n 29.008140362978157\n ],\n [\n -93.878173828125,\n 29.008140362978157\n ]\n ]\n ]\n }\n }\n ]\n}","issue":"67","publishingServiceCenter":{"id":5,"text":"Lafayette PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55a632a9e4b0183d66e45cc0","contributors":{"authors":[{"text":"Visser, Jenneke M.","contributorId":90397,"corporation":false,"usgs":true,"family":"Visser","given":"Jenneke","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":564333,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Duke-Sylvester, Scott M.","contributorId":40661,"corporation":false,"usgs":true,"family":"Duke-Sylvester","given":"Scott M.","affiliations":[],"preferred":false,"id":564332,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Carter, Jacoby 0000-0003-0110-0284 carterj@usgs.gov","orcid":"https://orcid.org/0000-0003-0110-0284","contributorId":2399,"corporation":false,"usgs":true,"family":"Carter","given":"Jacoby","email":"carterj@usgs.gov","affiliations":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":564330,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Broussard, Whitney P. III","contributorId":62101,"corporation":false,"usgs":true,"family":"Broussard","given":"Whitney","suffix":"III","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":564331,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70154909,"text":"70154909 - 2013 - Adventures on the roof of the world","interactions":[],"lastModifiedDate":"2015-07-15T14:30:51","indexId":"70154909","displayToPublicDate":"2014-01-01T12:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":997,"text":"BioScience","active":true,"publicationSubtype":{"id":10}},"title":"Adventures on the roof of the world","docAbstract":"To conduct field biology requires tenacity, grit, and flexibility; to endeavor to achieve conservation success requires patience, persistence, and passion. The essence of field biology and the hope for conservation success are both reflected admirably in George B. Schaller's most recent book, Tibet Wild: A Naturalist's Journeys on the Roof of the World. I can think of no living biologist who embodies these characteristics more than Schaller does. Nearly 80 years old, he still regularly treks in faraway lands, observing and recording the natural history of species that the vast majority of us will never see in the wild. Schaller is a vanguard, and Tibet Wild, like his other books, is a sentinel of urgent conservation need.
","language":"English","publisher":"Oxford University Press","publisherLocation":"Oxford","doi":"10.1525/bio.2013.63.8.12","usgsCitation":"Leslie, D., 2013, Adventures on the roof of the world: BioScience, v. 63, no. 8, p. 684-685, https://doi.org/10.1525/bio.2013.63.8.12.","productDescription":"2 p.","startPage":"684","endPage":"685","numberOfPages":"2","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-045059","costCenters":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"links":[{"id":473369,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1525/bio.2013.63.8.12","text":"Publisher Index Page"},{"id":305771,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"63","issue":"8","publishingServiceCenter":{"id":8,"text":"Raleigh PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55a78430e4b0183d66e45e79","contributors":{"authors":[{"text":"Leslie, David M. Jr. cleslie@usgs.gov","contributorId":145497,"corporation":false,"usgs":true,"family":"Leslie","given":"David M.","suffix":"Jr.","email":"cleslie@usgs.gov","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":false,"id":564339,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70154884,"text":"70154884 - 2013 - What happens in an estuary doesn't stay there: patterns of biotic connectivity resulting from long term ecological research","interactions":[],"lastModifiedDate":"2015-07-15T14:08:36","indexId":"70154884","displayToPublicDate":"2014-01-01T12:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2929,"text":"Oceanography","active":true,"publicationSubtype":{"id":10}},"title":"What happens in an estuary doesn't stay there: patterns of biotic connectivity resulting from long term ecological research","docAbstract":"The paucity of data on migratory connections and an incomplete understanding of how mobile organisms use geographically separate areas have been obstacles to understanding coastal dynamics. Research on acoustically tagged striped bass (Morone saxatilis) at the Plum Island Ecosystems (PIE) Long Term Ecological Research site, Massachusetts, documents intriguing patterns of biotic connectivity (i.e., long-distance migration between geographically distinct areas). First, the striped bass tagged at PIE migrated southward along the coast using different routes. Second, these tagged fish exhibited strong fidelity and specificity to PIE. For example, across multiple years, tagged striped bass resided in PIE waters for an average of 1.5-2.5 months per year (means: 51-72 days; range 2-122 days), left this estuary in fall, then returned in subsequent years. Third, this specificity and fidelity connected PIE to other locations. The fish exported nutrients and energy to at least three other coastal locations through biomass added as growth. These results demonstrate that what happens in an individual estuary can affect other estuaries. Striped bass that use tightly connected routes to feed in specific estuaries should have greater across-system impacts than fish that are equally likely to go anywhere. Consequently, variations in when, where, and how fish migrate can alter across-estuary impacts.
","language":"English","publisher":"The Oceanography Society","publisherLocation":"Rockville, MD","doi":"10.5670/oceanog.2013.60","usgsCitation":"Mather, M.E., Finn, J.T., Kennedy, C., Deegan, L.A., and Smith, J.M., 2013, What happens in an estuary doesn't stay there: patterns of biotic connectivity resulting from long term ecological research: Oceanography, v. 26, no. 3, p. 168-179, https://doi.org/10.5670/oceanog.2013.60.","productDescription":"12 p.","startPage":"168","endPage":"179","numberOfPages":"12","onlineOnly":"N","additionalOnlineFiles":"N","temporalStart":"2005-01-01","temporalEnd":"2010-12-31","ipdsId":"IP-045506","costCenters":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"links":[{"id":473370,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.5670/oceanog.2013.60","text":"Publisher Index Page"},{"id":305767,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Massachusetts","otherGeospatial":"Plum Island Ecosystems Long Term Ecological Research site","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -70.543212890625,\n 42.01665183556825\n ],\n [\n -70.1806640625,\n 42.17154633452751\n ],\n [\n -69.521484375,\n 41.549700145132725\n ],\n [\n -69.90600585937499,\n 41.15384235711447\n ],\n [\n -74.915771484375,\n 38.75408327579141\n ],\n [\n -75.11352539062499,\n 39.33429742980725\n ],\n [\n -74.20166015624999,\n 40.84706035607122\n ],\n [\n -73.026123046875,\n 41.45919537950706\n ],\n [\n -70.543212890625,\n 42.01665183556825\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"26","issue":"3","publishingServiceCenter":{"id":8,"text":"Raleigh PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55a7843ae4b0183d66e45e9a","contributors":{"authors":[{"text":"Mather, Martha E. 0000-0003-3027-0215 mather@usgs.gov","orcid":"https://orcid.org/0000-0003-3027-0215","contributorId":2580,"corporation":false,"usgs":true,"family":"Mather","given":"Martha","email":"mather@usgs.gov","middleInitial":"E.","affiliations":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true},{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":true,"id":564311,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Finn, John T.","contributorId":78302,"corporation":false,"usgs":true,"family":"Finn","given":"John","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":564876,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kennedy, Christina G.","contributorId":145646,"corporation":false,"usgs":false,"family":"Kennedy","given":"Christina G.","affiliations":[{"id":6932,"text":"University of Massachusetts, Amherst","active":true,"usgs":false}],"preferred":false,"id":564877,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Deegan, Linda A.","contributorId":34094,"corporation":false,"usgs":false,"family":"Deegan","given":"Linda","email":"","middleInitial":"A.","affiliations":[{"id":27818,"text":"The Ecosystems Center, Marine Biological Laboratory. Woods Hole, MA 02543.","active":true,"usgs":false}],"preferred":false,"id":564878,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Smith, Joseph M.","contributorId":106712,"corporation":false,"usgs":false,"family":"Smith","given":"Joseph","email":"","middleInitial":"M.","affiliations":[{"id":6932,"text":"University of Massachusetts, Amherst","active":true,"usgs":false},{"id":17855,"text":"School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA","active":true,"usgs":false}],"preferred":false,"id":564879,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70048026,"text":"70048026 - 2013 - A bibliography of all known publications & reports on the Gulf sturgeon, Acipenser oxyrinchus desotoi","interactions":[],"lastModifiedDate":"2017-01-19T14:23:20","indexId":"70048026","displayToPublicDate":"2014-01-01T11:59:00","publicationYear":"2013","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"title":"A bibliography of all known publications & reports on the Gulf sturgeon, Acipenser oxyrinchus desotoi","docAbstract":"This functional bibliography is meant to be a complete and comprehensive bibliography of all discoverable reports containing information on the Gulf Sturgeon (GS). This bibliography contains all known reports presenting, documenting, summarizing, listing, or interpreting information on the GS through 31 December 2013. Report citations are organized into four sections. Section I includes published scientific journal articles, books, dissertations and theses, published and unpublished technical reports, published harvest prohibitions, and online articles reporting substantive scientific information. Section II includes newspaper, newsletter, magazine, book, agency news releases, and online articles reporting on GS occurrences, mortalities, captures, jumping, boat collisions, aquaculture, historical photographs, and other largely non-scientific or anecdotal issues. Section III consists of books, theses, ecotour-guides, media articles, editorials, and blogs reporting a mix of anecdotal information, historical information, and opinion on GS conservation, habitat issues, exploitation, aquaculture, and human interaction - but presenting very limited or no substantive scientific information. Section IV includes videos, films and audio recordings documenting GS life history and behavior.","language":"English","publisher":"U.S. Geological Survey, Southeast Ecological Science Center","publisherLocation":"Gainesville, FL","doi":"10.3133/70048026","collaboration":"In cooperation with NOAA","usgsCitation":"Price, M., Adler, J., Littles, C., Randolph, A.N., Nash, U.A., Gillett, B., Randall, M.T., Sulak, K.J., Walsh, S.J., and Brownell, P., 2013, A bibliography of all known publications & reports on the Gulf sturgeon, Acipenser oxyrinchus desotoi, 103 p., https://doi.org/10.3133/70048026.","productDescription":"103 p.","numberOfPages":"107","ipdsId":"IP-045441","costCenters":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"links":[{"id":287985,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"538eee66e4b0d497d49684e1","contributors":{"authors":[{"text":"Price, Melissa 0000-0002-4276-0855","orcid":"https://orcid.org/0000-0002-4276-0855","contributorId":19879,"corporation":false,"usgs":true,"family":"Price","given":"Melissa","email":"","affiliations":[],"preferred":false,"id":518184,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Adler, Jennifer","contributorId":108403,"corporation":false,"usgs":true,"family":"Adler","given":"Jennifer","email":"","affiliations":[],"preferred":false,"id":518190,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Littles, Chanda","contributorId":48876,"corporation":false,"usgs":true,"family":"Littles","given":"Chanda","affiliations":[],"preferred":false,"id":518186,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Randolph, April Norem","contributorId":74680,"corporation":false,"usgs":true,"family":"Randolph","given":"April","email":"","middleInitial":"Norem","affiliations":[],"preferred":false,"id":518189,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Nash, Ursula A.","contributorId":52085,"corporation":false,"usgs":true,"family":"Nash","given":"Ursula","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":518187,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Gillett, Bethan","contributorId":29317,"corporation":false,"usgs":true,"family":"Gillett","given":"Bethan","email":"","affiliations":[],"preferred":false,"id":518185,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Randall, Michael T. 0000-0001-8805-0886 mrandall@usgs.gov","orcid":"https://orcid.org/0000-0001-8805-0886","contributorId":3127,"corporation":false,"usgs":true,"family":"Randall","given":"Michael","email":"mrandall@usgs.gov","middleInitial":"T.","affiliations":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":518183,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Sulak, Kenneth J. 0000-0002-4795-9310 ksulak@usgs.gov","orcid":"https://orcid.org/0000-0002-4795-9310","contributorId":2217,"corporation":false,"usgs":true,"family":"Sulak","given":"Kenneth","email":"ksulak@usgs.gov","middleInitial":"J.","affiliations":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":518182,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Walsh, Stephen J. 0000-0002-1009-8537 swalsh@usgs.gov","orcid":"https://orcid.org/0000-0002-1009-8537","contributorId":1456,"corporation":false,"usgs":true,"family":"Walsh","given":"Stephen","email":"swalsh@usgs.gov","middleInitial":"J.","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true},{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"preferred":true,"id":518181,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Brownell, Prescott","contributorId":54514,"corporation":false,"usgs":true,"family":"Brownell","given":"Prescott","email":"","affiliations":[],"preferred":false,"id":518188,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}} ,{"id":70125277,"text":"70125277 - 2013 - The contributions of Donald Lee Johnson to understanding the Quaternary geologic and biogeographic history of the California Channel Islands","interactions":[],"lastModifiedDate":"2014-09-16T11:47:43","indexId":"70125277","displayToPublicDate":"2014-01-01T11:46:24","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2785,"text":"Monographs of the Western North American Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"The contributions of Donald Lee Johnson to understanding the Quaternary geologic and biogeographic history of the California Channel Islands","docAbstract":"Over a span of 50 years, native Californian Donald Lee Johnson made a number of memorable contributions to our understanding of the California Channel Islands. Among these are (1) recognizing that carbonate dunes, often cemented into eolianite and derived from offshore shelf sediments during lowered sea level, are markers of glacial periods on the Channel Islands; (2) identifying beach rock on the Channel Islands as the northernmost occurrence of this feature on the Pacific Coast of North America; (3) recognizing of the role of human activities in historic landscape modification; (4) identifying both the biogenic and pedogenic origins of caliche “ghost forests” and laminar calcrete forms on the Channel Islands; (5) providing the first soil maps of several of the islands, showing diverse pathways of pedogenesis; (6) pointing out the importance of fire in Quaternary landscape history on the Channel Islands, based on detailed stratigraphic studies; and (7), perhaps his greatest contribution, clarifying the origin of Pleistocene pygmy mammoths on the Channel Islands, due not to imagined ancient land bridges, but rather the superb swimming abilities of proboscideans combined with lowered sea level, favorable paleowinds, and an attractive paleovegetation on the Channel Islands. Don was a classic natural historian in the great tradition of Charles Darwin and George Gaylord Simpson, his role models. Don’s work will remain important and useful for many years and is an inspiration to those researching the California Channel Islands today.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Monographs of the Western North American Naturalist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"M.L. Bean Museum","publisherLocation":"Provo, UT","usgsCitation":"Muhs, D.R., 2013, The contributions of Donald Lee Johnson to understanding the Quaternary geologic and biogeographic history of the California Channel Islands: Monographs of the Western North American Naturalist, v. 7, p. 1-20.","productDescription":"20 p.","startPage":"1","endPage":"20","numberOfPages":"20","ipdsId":"IP-050673","costCenters":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"links":[{"id":293941,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Channel Islands","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -118.4522588803,32.8153557197 ], [ -118.4522588803,32.8180536803 ], [ -118.4495609197,32.8180536803 ], [ -118.4495609197,32.8153557197 ], [ -118.4522588803,32.8153557197 ] ] ] } } ] }","volume":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"54195158e4b091c7ffc8e87e","contributors":{"authors":[{"text":"Muhs, Daniel R. 0000-0001-7449-251X dmuhs@usgs.gov","orcid":"https://orcid.org/0000-0001-7449-251X","contributorId":1857,"corporation":false,"usgs":true,"family":"Muhs","given":"Daniel","email":"dmuhs@usgs.gov","middleInitial":"R.","affiliations":[{"id":218,"text":"Denver Federal Center","active":false,"usgs":true}],"preferred":true,"id":501100,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70124301,"text":"70124301 - 2013 - The 2003 and 2007 wildfires in southern California","interactions":[],"lastModifiedDate":"2022-12-12T17:57:19.011819","indexId":"70124301","displayToPublicDate":"2014-01-01T11:37:45","publicationYear":"2013","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"chapter":"5","title":"The 2003 and 2007 wildfires in southern California","docAbstract":"Although many residents of southern California have long recognised that wildfires in the region are an ongoing, constant risk to lives and property, the enormity of the regional fire hazard caught the world’s attention during the southern California firestorms of 2003 (Figure 5.1). Beginning on 21 October, a series of fourteen wildfires broke out across the five-county region under severe Santa Ana winds, and within two weeks, more than 300,000 ha had burned (Keeley et al., 2004). The event was one of the costliest in the state’s history, with more than 3,600 homes damaged or destroyed and twenty-four fatalities. Suppression costs for the 12,000 firefighters have been estimated at US$120 million, and the total response and damage cost has been estimated at more than US$3 billion (COES, 2004). [Excerpt]","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Natural disasters and adaptation to climate change","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Cambridge University Press","publisherLocation":"Cambridge, United Kingdom","doi":"10.1017/CBO9780511845710.007","usgsCitation":"Keeley, J.E., Syphard, A.D., and Fotheringham, C.J., 2013, The 2003 and 2007 wildfires in southern California, chap. 5 of Natural disasters and adaptation to climate change, p. 42-52, https://doi.org/10.1017/CBO9780511845710.007.","productDescription":"11 p.","startPage":"42","endPage":"52","numberOfPages":"11","ipdsId":"IP-028426","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":293703,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -117.20389786544172,\n 32.44881429273482\n ],\n [\n -114.50575573348397,\n 32.71318911751732\n ],\n [\n -114.61798223500597,\n 33.18444964825143\n ],\n [\n -114.61896765832097,\n 33.52923389867249\n ],\n [\n -114.3582765661036,\n 33.936160034424034\n ],\n [\n -114.17062641453799,\n 34.31044557836907\n ],\n [\n -114.69952880719035,\n 35.05668534308694\n ],\n [\n -118.2103310749427,\n 37.72418091134796\n ],\n [\n -122.35938925494449,\n 36.77169171933643\n ],\n [\n -120.51272678427136,\n 34.56594999086576\n ],\n [\n -119.88673255542687,\n 33.75258810984759\n ],\n [\n -118.06098946872316,\n 33.585219701411305\n ],\n [\n -117.88301148294232,\n 32.937294403042614\n ],\n [\n -117.20389786544172,\n 32.44881429273482\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5412b9bfe4b0239f1986bb13","contributors":{"editors":[{"text":"Boulter, Sarah","contributorId":111353,"corporation":false,"usgs":true,"family":"Boulter","given":"Sarah","email":"","affiliations":[],"preferred":false,"id":509988,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Palutikof, Jean","contributorId":113844,"corporation":false,"usgs":true,"family":"Palutikof","given":"Jean","email":"","affiliations":[],"preferred":false,"id":509990,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Karoly, David John","contributorId":114147,"corporation":false,"usgs":true,"family":"Karoly","given":"David","email":"","middleInitial":"John","affiliations":[],"preferred":false,"id":509991,"contributorType":{"id":2,"text":"Editors"},"rank":3},{"text":"Guitart, Daniela","contributorId":113376,"corporation":false,"usgs":true,"family":"Guitart","given":"Daniela","email":"","affiliations":[],"preferred":false,"id":509989,"contributorType":{"id":2,"text":"Editors"},"rank":4}],"authors":[{"text":"Keeley, Jon E. 0000-0002-4564-6521 jon_keeley@usgs.gov","orcid":"https://orcid.org/0000-0002-4564-6521","contributorId":1268,"corporation":false,"usgs":true,"family":"Keeley","given":"Jon","email":"jon_keeley@usgs.gov","middleInitial":"E.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":500680,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Syphard, Alexandra D.","contributorId":8977,"corporation":false,"usgs":false,"family":"Syphard","given":"Alexandra","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":500681,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fotheringham, C. J.","contributorId":63334,"corporation":false,"usgs":true,"family":"Fotheringham","given":"C.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":500682,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70116317,"text":"sir20105070K - 2013 - A deposit model for magmatic iron-titanium-oxide deposits related to Proterozoic massif anorthosite plutonic suite","interactions":[{"subject":{"id":70047763,"text":"sir20135091 - 2013 - A deposit model for magmatic iron-titanium-oxide deposits related to Proterozoic massif anorthosite plutonic suites","indexId":"sir20135091","publicationYear":"2013","noYear":false,"title":"A deposit model for magmatic iron-titanium-oxide deposits related to Proterozoic massif anorthosite plutonic suites"},"predicate":"SUPERSEDED_BY","object":{"id":70116317,"text":"sir20105070K - 2013 - A deposit model for magmatic iron-titanium-oxide deposits related to Proterozoic massif anorthosite plutonic suite","indexId":"sir20105070K","publicationYear":"2013","noYear":false,"chapter":"K","title":"A deposit model for magmatic iron-titanium-oxide deposits related to Proterozoic massif anorthosite plutonic suite"},"id":1}],"lastModifiedDate":"2022-12-12T23:07:42.262855","indexId":"sir20105070K","displayToPublicDate":"2014-01-01T10:32:56","publicationYear":"2013","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2010-5070","chapter":"K","title":"A deposit model for magmatic iron-titanium-oxide deposits related to Proterozoic massif anorthosite plutonic suite","docAbstract":"This descriptive model for magmatic iron-titanium-oxide (Fe-Ti-oxide) deposits hosted by Proterozoic age massif-type anorthosite and related rock types presents their geological, mineralogical, geochemical, and geoenvironmental attributes. Although these Proterozoic rocks are found worldwide, the majority of known deposits are found within exposed rocks of the Grenville Province, stretching from southwestern United States through eastern Canada; its extension into Norway is termed the Rogaland Anorthosite Province. This type of Fe-Ti-oxide deposit dominated by ilmenite rarely contains more than 300 million tons of ore, with between 10- to 45-percent titanium dioxide (TiO2), 32- to 45-percent iron oxide (FeO), and less than 0.2-percent vanadium (V).
\nThe origin of these typically discordant ore deposits remains as enigmatic as the magmatic evolution of their host rocks. The deposits clearly have a magmatic origin, hosted by an age-constrained unique suite of rocks that likely are the consequence of a particular combination of tectonic circumstances, rather than any a priori temporal control. Principal ore minerals are ilmenite and hemo-ilmenite (ilmenite with extensive hematite exsolution lamellae); occurrences of titanomagnetite, magnetite, and apatite that are related to this deposit type are currently of less economic importance. Ore-mineral paragenesis is somewhat obscured by complicated solid solution and oxidation behavior within the Fe-Ti-oxide system. Anorthosite suites hosting these deposits require an extensive history of voluminous plagioclase crystallization to develop plagioclase-melt diapirs with entrained Fe-Ti-rich melt rising from the base of the lithosphere to mid- and upper-crustal levels. Timing and style of oxide mineralization are related to magmatic and dynamic evolution of these diapiric systems and to development and movement of oxide cumulates and related melts.
\nActive mines have developed large open pits with extensive waste-rock piles, but because of the nature of the ore and waste rock, the major environmental impacts documented at the mine sites are reported to be waste disposal issues and somewhat degraded water quality.
","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Mineral deposit models for resource assessment (Scientific Investigations Report 2010-5070)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20105070K","usgsCitation":"Woodruff, L.G., Nicholson, S.W., and Fey, D.L., 2013, A deposit model for magmatic iron-titanium-oxide deposits related to Proterozoic massif anorthosite plutonic suite: U.S. Geological Survey Scientific Investigations Report 2010-5070, vii, 47 p., https://doi.org/10.3133/sir20105070K.","productDescription":"vii, 47 p.","onlineOnly":"Y","additionalOnlineFiles":"N","costCenters":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":289714,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20105070K.gif"},{"id":289713,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2010/5070/k/pdf/sir2010-5070k.pdf","text":"Report","linkFileType":{"id":1,"text":"pdf"},"description":"Report"},{"id":289712,"rank":11,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2010/5070/k/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53bfb5e5e4b06d97a6487cfc","contributors":{"authors":[{"text":"Woodruff, Laurel G. 0000-0002-2514-9923 woodruff@usgs.gov","orcid":"https://orcid.org/0000-0002-2514-9923","contributorId":2224,"corporation":false,"usgs":true,"family":"Woodruff","given":"Laurel","email":"woodruff@usgs.gov","middleInitial":"G.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":495762,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nicholson, Suzanne W. 0000-0002-9365-1894 swnich@usgs.gov","orcid":"https://orcid.org/0000-0002-9365-1894","contributorId":880,"corporation":false,"usgs":true,"family":"Nicholson","given":"Suzanne","email":"swnich@usgs.gov","middleInitial":"W.","affiliations":[],"preferred":true,"id":495761,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fey, David L. dfey@usgs.gov","contributorId":713,"corporation":false,"usgs":true,"family":"Fey","given":"David","email":"dfey@usgs.gov","middleInitial":"L.","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":495760,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70129217,"text":"70129217 - 2013 - Annual flood sensitivities to El Niño-Southern Oscillation at the global scale","interactions":[],"lastModifiedDate":"2014-10-21T10:00:29","indexId":"70129217","displayToPublicDate":"2014-01-01T09:59:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1928,"text":"Hydrology and Earth System Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Annual flood sensitivities to El Niño-Southern Oscillation at the global scale","docAbstract":"Floods are amongst the most dangerous natural hazards in terms of economic damage. Whilst a growing number of studies have examined how river floods are influenced by climate change, the role of natural modes of interannual climate variability remains poorly understood. We present the first global assessment of the influence of El Niño–Southern Oscillation (ENSO) on annual river floods, defined here as the peak daily discharge in a given year. The analysis was carried out by simulating daily gridded discharges using the WaterGAP model (Water – a Global Assessment and Prognosis), and examining statistical relationships between these discharges and ENSO indices. We found that, over the period 1958–2000, ENSO exerted a significant influence on annual floods in river basins covering over a third of the world's land surface, and that its influence on annual floods has been much greater than its influence on average flows. We show that there are more areas in which annual floods intensify with La Niña and decline with El Niño than vice versa. However, we also found that in many regions the strength of the relationships between ENSO and annual floods have been non-stationary, with either strengthening or weakening trends during the study period. We discuss the implications of these findings for science and management. Given the strong relationships between ENSO and annual floods, we suggest that more research is needed to assess relationships between ENSO and flood impacts (e.g. loss of lives or economic damage). Moreover, we suggest that in those regions where useful relationships exist, this information could be combined with ongoing advances in ENSO prediction research, in order to provide year-to-year probabilistic flood risk forecasts.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrology and Earth System Sciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"European Geophysical Society","publisherLocation":"Katlenburg-Lindau, Germany","doi":"10.5194/hess-18-47-2014","usgsCitation":"Ward, P.J., Eisner, S., Florke, M., Dettinger, M., and Kummu, M., 2013, Annual flood sensitivities to El Niño-Southern Oscillation at the global scale: Hydrology and Earth System Sciences, v. 18, p. 47-66, https://doi.org/10.5194/hess-18-47-2014.","productDescription":"20 p.","startPage":"47","endPage":"66","numberOfPages":"20","ipdsId":"IP-052126","costCenters":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"links":[{"id":473371,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.5194/hess-18-47-2014","text":"Publisher Index Page"},{"id":295520,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":295480,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.5194/hess-18-47-2014"},{"id":295481,"type":{"id":15,"text":"Index Page"},"url":"https://www.hydrol-earth-syst-sci.net/18/47/2014/hess-18-47-2014.html"}],"volume":"18","noUsgsAuthors":false,"publicationDate":"2014-01-06","publicationStatus":"PW","scienceBaseUri":"544775a3e4b0f888a81b82f4","contributors":{"authors":[{"text":"Ward, Philip J.","contributorId":67434,"corporation":false,"usgs":true,"family":"Ward","given":"Philip","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":503551,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Eisner, S.","contributorId":48892,"corporation":false,"usgs":true,"family":"Eisner","given":"S.","email":"","affiliations":[],"preferred":false,"id":503550,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Florke, M.","contributorId":29335,"corporation":false,"usgs":true,"family":"Florke","given":"M.","email":"","affiliations":[],"preferred":false,"id":503548,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dettinger, Michael D. 0000-0002-7509-7332","orcid":"https://orcid.org/0000-0002-7509-7332","contributorId":8019,"corporation":false,"usgs":true,"family":"Dettinger","given":"Michael D.","affiliations":[],"preferred":false,"id":503547,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kummu, M.","contributorId":39711,"corporation":false,"usgs":true,"family":"Kummu","given":"M.","email":"","affiliations":[],"preferred":false,"id":503549,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70100905,"text":"70100905 - 2013 - Late Miocene-Pleistocene evolution of a Rio Grande rift subbasin, Sunshine Valley-Costilla Plain, San Luis Basin, New Mexico and Colorado","interactions":[],"lastModifiedDate":"2017-04-14T10:28:55","indexId":"70100905","displayToPublicDate":"2014-01-01T09:44:40","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1727,"text":"GSA Special Papers","active":true,"publicationSubtype":{"id":10}},"title":"Late Miocene-Pleistocene evolution of a Rio Grande rift subbasin, Sunshine Valley-Costilla Plain, San Luis Basin, New Mexico and Colorado","docAbstract":"The Sunshine Valley-Costilla Plain, a structural subbasin of the greater San Luis Basin of the northern Rio Grande rift, is bounded to the north and south by the San Luis Hills and the Red River fault zone, respectively. Surficial mapping, neotectonic investigations, geochronology, and geophysics demonstrate that the structural, volcanic, and geomorphic evolution of the basin involves the intermingling of climatic cycles and spatially and temporally varying tectonic activity of the Rio Grande rift system. Tectonic activity has transferred between range-bounding and intrabasin faults creating relict landforms of higher tectonic-activity rates along the mountain-piedmont junction. Pliocene–Pleistocene average long-term slip rates along the southern Sangre de Cristo fault zone range between 0.1 and 0.2 mm/year with late Pleistocene slip rates approximately half (0.06 mm/year) of the longer Quaternary slip rate. During the late Pleistocene, climatic influences have been dominant over tectonic influences on mountain-front geomorphic processes. Geomorphic evidence suggests that this once-closed subbasin was integrated into the Rio Grande prior to the integration of the once-closed northern San Luis Basin, north of the San Luis Hills, Colorado; however, deep canyon incision, north of the Red River and south of the San Luis Hills, initiated relatively coeval to the integration of the northern San Luis Basin.
Long-term projections of slip rates applied to a 1.6 km basin depth defined from geophysical modeling suggests that rifting initiated within this subbasin between 20 and 10 Ma. Geologic mapping and geophysical interpretations reveal a complex network of northwest-, northeast-, and north-south–trending faults. Northwest- and northeast-trending faults show dual polarity and are crosscut by north-south– trending faults. This structural model possibly provides an analog for how some intracontinental rift structures evolve through time.
","language":"English","publisher":"Geological Society of America","doi":"10.1130/2013.2494(03)","usgsCitation":"Ruleman, C., Thompson, R.A., Shroba, R., Anderson, M., Drenth, B., Rotzien, J., and Lyon, J., 2013, Late Miocene-Pleistocene evolution of a Rio Grande rift subbasin, Sunshine Valley-Costilla Plain, San Luis Basin, New Mexico and Colorado: GSA Special Papers, v. 494, p. 47-73, https://doi.org/10.1130/2013.2494(03).","productDescription":"27 p.","startPage":"47","endPage":"73","ipdsId":"IP-029946","costCenters":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"links":[{"id":285881,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado, New Mexico","otherGeospatial":"San Luis Basin;San Luis Hills","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -106.4932,36.1484 ], [ -106.4932,38.2775 ], [ -105.2298,38.2775 ], [ -105.2298,36.1484 ], [ -106.4932,36.1484 ] ] ] } } ] }","volume":"494","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"535594a9e4b0120853e8c047","contributors":{"authors":[{"text":"Ruleman, C.A.","contributorId":50237,"corporation":false,"usgs":true,"family":"Ruleman","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":492466,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thompson, R. A.","contributorId":100420,"corporation":false,"usgs":true,"family":"Thompson","given":"R.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":492469,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Shroba, R. R.","contributorId":44133,"corporation":false,"usgs":true,"family":"Shroba","given":"R. R.","affiliations":[],"preferred":false,"id":492464,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Anderson, M.","contributorId":63141,"corporation":false,"usgs":true,"family":"Anderson","given":"M.","affiliations":[],"preferred":false,"id":492468,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Drenth, B. J.","contributorId":49885,"corporation":false,"usgs":true,"family":"Drenth","given":"B. J.","affiliations":[],"preferred":false,"id":492465,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Rotzien, J.","contributorId":20254,"corporation":false,"usgs":true,"family":"Rotzien","given":"J.","email":"","affiliations":[],"preferred":false,"id":492463,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Lyon, J.","contributorId":57370,"corporation":false,"usgs":true,"family":"Lyon","given":"J.","affiliations":[],"preferred":false,"id":492467,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70093266,"text":"70093266 - 2013 - Songbird use of floodplain and upland forests along the Upper Mississippi River corridor during spring migration","interactions":[],"lastModifiedDate":"2015-06-02T12:19:24","indexId":"70093266","displayToPublicDate":"2014-01-01T09:41:40","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3551,"text":"The Condor","active":true,"publicationSubtype":{"id":10}},"title":"Songbird use of floodplain and upland forests along the Upper Mississippi River corridor during spring migration","docAbstract":"The Upper Mississippi River is thought to provide important stopover habitat for migrating landbirds because of its north-south orientation and floodplain forests. The river flows through the Driftless Area of southwestern Wisconsin and southeastern Minnesota where forests are plentiful, yet forests of the floodplain and Driftless Area uplands differ greatly in landscape setting, tree species composition, and topography. We compared landbird assemblages in these upland and floodplain forests over three springs, 2005–2007, using line-transect surveys at randomly selected areas in and within 16 km of the floodplain. We found more species of both transient and locally breeding migrants per survey in floodplain than in upland forest. Detections of transient neotropical migrants did not differ statistically by habitat. Detections of locally breeding neotropical and temperate-zone migrants and transient temperate-zone migrants were greater in floodplain than in upland forest. Between floodplain and upland forest, assemblages of locally breeding species, including neotropical and temperate-zone migrants (of which some individuals were in transit), differed substantially, but assemblages of transients (including both neotropical and temperate-zone migrants) did not differ as much. Only two species of transient migrants had clear affinities for floodplain forest, and none had an affinity for upland forest, whereas most locally breeding migrants had an affinity for either upland or floodplain forest. Within each spring, however, detections of transient neotropical migrants shifted from being greater in floodplain to greater in upland forests. This intraseasonal shift may be related to the phenology of certain tree species.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"The Condor","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Cooper Ornithological Society","doi":"10.1525/cond.2012.110209","usgsCitation":"Kirsch, E.M., Heglund, P., Gray, B.R., and Mckann, P., 2013, Songbird use of floodplain and upland forests along the Upper Mississippi River corridor during spring migration: The Condor, v. 115, no. 1, p. 115-130, https://doi.org/10.1525/cond.2012.110209.","productDescription":"16 p.","startPage":"115","endPage":"130","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-027354","costCenters":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"links":[{"id":473372,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1525/cond.2012.110209","text":"Publisher Index Page"},{"id":282099,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":282096,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1525/cond.2012.110209"},{"id":282062,"type":{"id":15,"text":"Index Page"},"url":"https://www.bioone.org/doi/abs/10.1525/cond.2012.110209"}],"country":"United States","state":"Iowa;Minnesota;Wisconsin","otherGeospatial":"Upper Mississippi River","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -91.9722,43.3471 ], [ -91.9722,44.6353 ], [ -91.0327,44.6353 ], [ -91.0327,43.3471 ], [ -91.9722,43.3471 ] ] ] } } ] }","volume":"115","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd734de4b0b29085108df9","contributors":{"authors":[{"text":"Kirsch, Eileen M. 0000-0002-2818-5022 ekirsch@usgs.gov","orcid":"https://orcid.org/0000-0002-2818-5022","contributorId":3477,"corporation":false,"usgs":true,"family":"Kirsch","given":"Eileen","email":"ekirsch@usgs.gov","middleInitial":"M.","affiliations":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"preferred":true,"id":489997,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Heglund, Patricia J.","contributorId":51248,"corporation":false,"usgs":true,"family":"Heglund","given":"Patricia J.","affiliations":[],"preferred":false,"id":489998,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gray, Brian R. 0000-0001-7682-9550 brgray@usgs.gov","orcid":"https://orcid.org/0000-0001-7682-9550","contributorId":2615,"corporation":false,"usgs":true,"family":"Gray","given":"Brian","email":"brgray@usgs.gov","middleInitial":"R.","affiliations":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"preferred":true,"id":489996,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mckann, Patrick","contributorId":94209,"corporation":false,"usgs":true,"family":"Mckann","given":"Patrick","affiliations":[],"preferred":false,"id":489999,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70068673,"text":"70068673 - 2013 - Aftershocks of the 2010 Mw 7.2 El Mayor-Cucapah earthquake revealcomplex faulting in the Yuha Desert, California","interactions":[],"lastModifiedDate":"2014-01-13T09:51:30","indexId":"70068673","displayToPublicDate":"2014-01-01T09:38:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Aftershocks of the 2010 Mw 7.2 El Mayor-Cucapah earthquake revealcomplex faulting in the Yuha Desert, California","docAbstract":"We detect and precisely locate over 9500 aftershocks that occurred in the Yuha Desert region during a 2 month period following the 4 April 2010 Mw 7.2 El Mayor-Cucapah (EMC) earthquake. Events are relocated using a series of absolute and relative relocation procedures that include Hypoinverse, Velest, and hypoDD. Location errors are reduced to ~40 m horizontally and ~120 m vertically.Aftershock locations reveal a complex pattern of faulting with en echelon fault segments trending toward the northwest, approximately parallel to the North American-Pacific plate boundary and en echelon, conjugate features trending to the northeast. The relocated seismicity is highly correlated with published surface mapping of faults that experienced triggered surface slip in response to the EMC main shock. Aftershocks occurred between 2 km and 11 km depths, consistent with previous studies of seismogenic thickness in the region. Three-dimensional analysis reveals individual and intersecting fault planes that are limited in their along-strike length. These fault planes remain distinct structures at depth, indicative of conjugate faulting, and do not appear to coalesce onto a throughgoing fault segment. We observe a complex spatiotemporal migration of aftershocks, with seismicity that jumps between individual fault segments that are active for only a few days to weeks. Aftershock rates are roughly consistent with the expected earthquake production rates of Dieterich (1994). The conjugate pattern of faulting and nonuniform aftershock migration patterns suggest that strain in the Yuha Desert is being accommodated in a complex manner.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research B: Solid Earth","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Geophysical Union","doi":"10.1002/2013JB010529","usgsCitation":"Kroll, K., Cochran, E.S., Richards-Dinger, K., and Sumy, D., 2013, Aftershocks of the 2010 Mw 7.2 El Mayor-Cucapah earthquake revealcomplex faulting in the Yuha Desert, California: Journal of Geophysical Research B: Solid Earth, v. 118, no. 12, p. 6146-6164, https://doi.org/10.1002/2013JB010529.","productDescription":"19 p.","startPage":"6146","endPage":"6164","numberOfPages":"19","ipdsId":"IP-048905","costCenters":[],"links":[{"id":280843,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":280825,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/2013JB010529"}],"country":"United States","state":"California","otherGeospatial":"Yuha Desert","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -116.000,32.000 ], [ -116.000,33.500 ], [ -115.000,33.500 ], [ -115.000,32.000 ], [ -116.000,32.000 ] ] ] } } ] }","volume":"118","issue":"12","noUsgsAuthors":false,"publicationDate":"2013-12-05","publicationStatus":"PW","scienceBaseUri":"53cd4bf2e4b0b290850f0a82","contributors":{"authors":[{"text":"Kroll, K.","contributorId":80177,"corporation":false,"usgs":true,"family":"Kroll","given":"K.","affiliations":[],"preferred":false,"id":488032,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cochran, Elizabeth S. 0000-0003-2485-4484 ecochran@usgs.gov","orcid":"https://orcid.org/0000-0003-2485-4484","contributorId":2025,"corporation":false,"usgs":true,"family":"Cochran","given":"Elizabeth","email":"ecochran@usgs.gov","middleInitial":"S.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":488029,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Richards-Dinger, K.","contributorId":37125,"corporation":false,"usgs":true,"family":"Richards-Dinger","given":"K.","affiliations":[],"preferred":false,"id":488030,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sumy, Danielle","contributorId":63301,"corporation":false,"usgs":true,"family":"Sumy","given":"Danielle","affiliations":[],"preferred":false,"id":488031,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70111903,"text":"70111903 - 2013 - Avian disease assessment in seabirds and non-native passerines birds at Midway Atoll NWR","interactions":[],"lastModifiedDate":"2014-07-02T09:35:04","indexId":"70111903","displayToPublicDate":"2014-01-01T09:25:00","publicationYear":"2013","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":4,"text":"Other Government Series"},"seriesNumber":"TR HCSU-047","title":"Avian disease assessment in seabirds and non-native passerines birds at Midway Atoll NWR","docAbstract":"Midway Atoll in the Northwestern Hawaiian Islands supports the largest breeding colony of Laysan albatross (Phoebastria immutabilis) in the world and is a proposed site for the translocation of endangered Northwestern Hawaiian Island passerine birds such as the Nihoa finch (Telespiza ultima), Nihoa millerbird (Acrocephalus familiaris kingi), or Laysan finch (Telespiza cantans). On the main Hawaiian Islands, introduced mosquito-borne avian malaria (Plasmodium relictum) and avian pox (Avipoxvirus) have contributed to the extinction and decline of native Hawaiian avifauna. The mosquito vector (Culex quinquefasciatus) is present on Sand Island, Midway Atoll, where epizootics of Avipoxvirus have been reported among nestling Laysan albatross, black-footed albatross (Phoebastria nigripes), and red-tailed tropicbirds (Phaethon rubricauda) since 1963. Two introduced passerines, the common canary (Serinus canaria) and the common myna (Acridotheres tristis), are also present on Sand Island and may serve as reservoirs of mosquito-borne pathogens. Assessing disease prevalence and transmission potential at Midway Atoll National Wildlife Refuge (NWR) is a critical first step to translocation of Nihoa endemic passerines. In May 2010 and April 2012 we surveyed Midway Atoll NWR for mosquitoes and evidence of mosquito-borne disease. Although we did not observe active pox infections on albatross nestlings in May 2010, active infections were prevalent on albatross nestlings in April 2012. Presumptive diagnosis of Avipoxvirus was confirmed by PCR amplification of the Avipoxvirus 4b core protein gene from lesions collected from 10 albatross nestlings. Products were sequenced and compared to 4b core protein sequences from 28 Avipoxvirus isolates from the Hawaiian Islands and other parts of the world. Sequences from all Midway isolates were identical and formed a clade with other Avipoxvirus isolates from seabirds that was distinct from other Avipoxvirus isolates from the Hawaiian Islands. Tissue from three presumptive avian pox lesions from common canaries tested negative for Avipoxvirus. Blood samples from 124 canaries and 61 mynas tested negative for Plasmodium by one or more diagnostic tests based on microscopy, serology, or PCR diagnostics. Prevalence of Avipoxvirus infection was highest among albatross nestlings (94.6%) in the vicinity of the septic tanks where adult C. quinquefasciatus reached their highest densities, and data from all sites suggest a positive correlation between mosquito abundance and Avipoxvirus prevalence. Adult C. quinquefasciatus were also locally abundant around fishless, constructed wetlands. Since 1996, infrastructure removal and source reduction efforts by the refuge have greatly reduced the availability of underground and container habitats for larval mosquitoes on Sand Island. However, the creation of artificial wetlands and a central septic system on Sand Island has resulted in new, highly productive larval mosquito habitat for C. quinquefasciatus. Despite the presence of endemic Avipoxvirus in albatross nestlings and the introduction of mosquito vectors and two susceptible passerine species in the last century, we found no evidence of the avian malaria Plasmodium relictum or a passerine-infecting Avipoxvirus on Midway Atoll NWR that would interfere with the successful translocation of endemic Northwestern Hawaiian Island passerines. Without eradication of mosquitoes from Midway Atoll, however, periodic epizootics of Avipoxvirus among nestling seabirds will likely continue, and the introduction of malaria and passerine strains of Avipoxvirus from migratory birds will remain a long-term threat to passerine restoration programs.
","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Hawaii Cooperative Studies Unit Technical Report","largerWorkSubtype":{"id":4,"text":"Other Government Series"},"language":"English","publisher":"Univeristy of Hawaii","publisherLocation":"Hilo, HI","usgsCitation":"LaPointe, D.A., Atkinson, C.T., and Klavitter, J.L., 2013, Avian disease assessment in seabirds and non-native passerines birds at Midway Atoll NWR, iv, 32 p.","productDescription":"iv, 32 p.","numberOfPages":"38","ipdsId":"IP-052514","costCenters":[{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true}],"links":[{"id":289362,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":288196,"type":{"id":15,"text":"Index Page"},"url":"https://hilo.hawaii.edu/hcsu/publications.php"}],"country":"United States","state":"Hawai'i","otherGeospatial":"Midway Atoll","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -177.650727,27.990571 ], [ -177.650727,28.480604 ], [ -177.087233,28.480604 ], [ -177.087233,27.990571 ], [ -177.650727,27.990571 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53b7b0abe4b0388651d91649","contributors":{"authors":[{"text":"LaPointe, Dennis A.","contributorId":63900,"corporation":false,"usgs":true,"family":"LaPointe","given":"Dennis","email":"","middleInitial":"A.","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":494532,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Atkinson, Carter T. 0000-0002-4232-5335 catkinson@usgs.gov","orcid":"https://orcid.org/0000-0002-4232-5335","contributorId":1124,"corporation":false,"usgs":true,"family":"Atkinson","given":"Carter","email":"catkinson@usgs.gov","middleInitial":"T.","affiliations":[{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true},{"id":5049,"text":"Pacific Islands Ecosys Research Center","active":true,"usgs":true},{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":494530,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Klavitter, John L.","contributorId":23847,"corporation":false,"usgs":true,"family":"Klavitter","given":"John","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":494531,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70048561,"text":"70048561 - 2013 - Development of a novel flow cytometric approach to evaluate fish sperm chromatin using fixed samples","interactions":[],"lastModifiedDate":"2019-07-01T11:50:45","indexId":"70048561","displayToPublicDate":"2014-01-01T09:19:00","publicationYear":"2013","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Development of a novel flow cytometric approach to evaluate fish sperm chromatin using fixed samples","docAbstract":"The integrity of the paternal DNA is essential for the accurate transmission of genetic information, yet fertilization is not inhibited by chromatin breakage. Some methods are available for the sensitive detection of DNA damage and can be applied in studies of environmental toxicology, carcinogenesis, aging, and assisted reproduction techniques in both clinical and experimental settings. Because semen samples obtained from remote locations undergo chromatin damage prior to laboratory assessment, the present study was undertaken to evaluate treatments for effective chromatin staining in the development of a DNA fragmentation assay using fixed milt from yellow perch (Perca flavescens). Similar to the sperm chromatin structure assay (SCSA), susceptibility of nuclear DNA to acid-induced denaturation was measured by flow cytometry (FCM). Use of 10% buffered formalin for milt fixation allowed easier peak discrimination than 4% paraformaldehyde. The effects of time and temperature of incubation in 0.08 N HCl were evaluated in order to determine the ideal conditions for promoting DNA decondensation and making strand breaks more available for staining and detection by FCM. The best results were obtained with incubation at 37°C for 1 minute, followed by cold propidium iodide staining for 30 minutes.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of the 8th Association for Applied Animal Andrology Biennial Conference","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"8th Association for Applied Animal Andrology Biennial Conference","conferenceDate":"July 28-29, 2012","conferenceLocation":"Vancouver, British Columbia","language":"English","publisher":"Applied Animal Andrology","publisherLocation":"Wallingford, Oxfordshire, UK","usgsCitation":"Jenkins, J.A., 2013, Development of a novel flow cytometric approach to evaluate fish sperm chromatin using fixed samples, in Proceedings of the 8th Association for Applied Animal Andrology Biennial Conference, v. 8, Vancouver, British Columbia, July 28-29, 2012, p. 145-156.","productDescription":"12 p.","startPage":"145","endPage":"156","ipdsId":"IP-038298","costCenters":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":289377,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53b7b0e8e4b0388651d916be","contributors":{"authors":[{"text":"Jenkins, Jill A. 0000-0002-5087-0894 jenkinsj@usgs.gov","orcid":"https://orcid.org/0000-0002-5087-0894","contributorId":2710,"corporation":false,"usgs":true,"family":"Jenkins","given":"Jill","email":"jenkinsj@usgs.gov","middleInitial":"A.","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true},{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true}],"preferred":true,"id":485091,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70093893,"text":"70093893 - 2013 - An effective noise-suppression technique for surface microseismic data","interactions":[],"lastModifiedDate":"2014-02-14T09:08:39","indexId":"70093893","displayToPublicDate":"2014-01-01T09:05:39","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1808,"text":"Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"An effective noise-suppression technique for surface microseismic data","docAbstract":"The presence of strong surface-wave noise in surface microseismic data may decrease the utility of these data. We implement a technique, based on the distinct characteristics that microseismic signal and noise show in the τ‐p domain, to suppress surface-wave noise in microseismic data. Because most microseismic source mechanisms are deviatoric, preprocessing is necessary to correct for the nonuniform radiation pattern prior to transforming the data to the τ‐p domain. We employ a scanning approach, similar to semblance analysis, to test all possible double-couple orientations to determine an estimated orientation that best accounts for the polarity pattern of any microseismic events. We then correct the polarity of the data traces according to this pattern, prior to conducting signal-noise separation in the τ‐p domain. We apply our noise-suppression technique to two surface passive-seismic data sets from different acquisition surveys. The first data set includes a synthetic microseismic event added to field passive noise recorded by an areal receiver array distributed over a Barnett Formation reservoir undergoing hydraulic fracturing. The second data set is field microseismic data recorded by receivers arranged in a star-shaped array, over a Bakken Shale reservoir during a hydraulic-fracturing process. Our technique significantly improves the signal-to-noise ratios of the microseismic events and preserves the waveforms at the individual traces. We illustrate that the enhancement in signal-to-noise ratio also results in improved imaging of the microseismic hypocenter.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Geophysics","doi":"10.1190/GEO2012-0502.1","usgsCitation":"Forghani-Arani, F., Willis, M., Haines, S.S., Batzle, M., Behura, J., and Davidson, M., 2013, An effective noise-suppression technique for surface microseismic data: Geophysics, v. 78, no. 6, p. KS85-KS95, https://doi.org/10.1190/GEO2012-0502.1.","productDescription":"11 p.","startPage":"KS85","endPage":"KS95","ipdsId":"IP-042475","costCenters":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":282373,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":282372,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1190/GEO2012-0502.1"}],"volume":"78","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd4c72e4b0b290850f0fde","contributors":{"authors":[{"text":"Forghani-Arani, Farnoush","contributorId":7588,"corporation":false,"usgs":true,"family":"Forghani-Arani","given":"Farnoush","affiliations":[],"preferred":false,"id":490261,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Willis, Mark","contributorId":10309,"corporation":false,"usgs":true,"family":"Willis","given":"Mark","affiliations":[],"preferred":false,"id":490262,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Haines, Seth S. 0000-0003-2611-8165 shaines@usgs.gov","orcid":"https://orcid.org/0000-0003-2611-8165","contributorId":1344,"corporation":false,"usgs":true,"family":"Haines","given":"Seth","email":"shaines@usgs.gov","middleInitial":"S.","affiliations":[{"id":255,"text":"Energy Resources Program","active":true,"usgs":true},{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true},{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":490260,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Batzle, Mike","contributorId":102766,"corporation":false,"usgs":true,"family":"Batzle","given":"Mike","affiliations":[],"preferred":false,"id":490264,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Behura, Jyoti","contributorId":103948,"corporation":false,"usgs":true,"family":"Behura","given":"Jyoti","affiliations":[],"preferred":false,"id":490265,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Davidson, Michael","contributorId":65360,"corporation":false,"usgs":true,"family":"Davidson","given":"Michael","affiliations":[],"preferred":false,"id":490263,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70093890,"text":"70093890 - 2013 - Blind test of methods for obtaining 2-D near-surface seismic velocity models from first-arrival traveltimes","interactions":[],"lastModifiedDate":"2017-11-07T10:30:12","indexId":"70093890","displayToPublicDate":"2014-01-01T08:43:07","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3928,"text":"Journal of Environmental & Engineering Geophysics","printIssn":"1083-1363","active":true,"publicationSubtype":{"id":10}},"title":"Blind test of methods for obtaining 2-D near-surface seismic velocity models from first-arrival traveltimes","docAbstract":"Seismic refraction methods are used in environmental and engineering studies to image the shallow subsurface. We present a blind test of inversion and tomographic refraction analysis methods using a synthetic first-arrival-time dataset that was made available to the community in 2010. The data are realistic in terms of the near-surface velocity model, shot-receiver geometry and the data's frequency and added noise. Fourteen estimated models were determined by ten participants using eight different inversion algorithms, with the true model unknown to the participants until it was revealed at a session at the 2011 SAGEEP meeting. The estimated models are generally consistent in terms of their large-scale features, demonstrating the robustness of refraction data inversion in general, and the eight inversion algorithms in particular. When compared to the true model, all of the estimated models contain a smooth expression of its two main features: a large offset in the bedrock and the top of a steeply dipping low-velocity fault zone. The estimated models do not contain a subtle low-velocity zone and other fine-scale features, in accord with conventional wisdom. Together, the results support confidence in the reliability and robustness of modern refraction inversion and tomographic methods.","language":"English","publisher":"Journal of Environmental and Engineering Geophysics","doi":"10.2113/JEEG18.3.183","usgsCitation":"Zelt, C.A., Haines, S., Powers, M.H., Sheehan, J., Rohdewald, S., Link, C., Hayashi, K., Zhao, D., Zhou, H., Burton, B., Petersen, U.K., Bonal, N.D., and Doll, W.E., 2013, Blind test of methods for obtaining 2-D near-surface seismic velocity models from first-arrival traveltimes: Journal of Environmental & Engineering Geophysics, v. 18, no. 3, p. 183-194, https://doi.org/10.2113/JEEG18.3.183.","productDescription":"12 p.","startPage":"183","endPage":"194","ipdsId":"IP-043837","costCenters":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":282370,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2113/JEEG18.3.183"},{"id":282371,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd4fa1e4b0b290850f2d42","contributors":{"authors":[{"text":"Zelt, Colin A.","contributorId":99461,"corporation":false,"usgs":true,"family":"Zelt","given":"Colin","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":490258,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Haines, Seth 0000-0003-2611-8165","orcid":"https://orcid.org/0000-0003-2611-8165","contributorId":97814,"corporation":false,"usgs":true,"family":"Haines","given":"Seth","affiliations":[],"preferred":false,"id":490257,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Powers, Michael H. 0000-0002-4480-7856 mhpowers@usgs.gov","orcid":"https://orcid.org/0000-0002-4480-7856","contributorId":851,"corporation":false,"usgs":true,"family":"Powers","given":"Michael","email":"mhpowers@usgs.gov","middleInitial":"H.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":490246,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sheehan, Jacob","contributorId":75059,"corporation":false,"usgs":true,"family":"Sheehan","given":"Jacob","email":"","affiliations":[],"preferred":false,"id":490256,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Rohdewald, Siegfried","contributorId":64554,"corporation":false,"usgs":true,"family":"Rohdewald","given":"Siegfried","email":"","affiliations":[],"preferred":false,"id":490255,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Link, Curtis","contributorId":6368,"corporation":false,"usgs":true,"family":"Link","given":"Curtis","email":"","affiliations":[],"preferred":false,"id":490248,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Hayashi, Koichi","contributorId":22675,"corporation":false,"usgs":true,"family":"Hayashi","given":"Koichi","email":"","affiliations":[],"preferred":false,"id":490251,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Zhao, Don","contributorId":58182,"corporation":false,"usgs":true,"family":"Zhao","given":"Don","email":"","affiliations":[],"preferred":false,"id":490254,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Zhou, Hua-wei","contributorId":11504,"corporation":false,"usgs":true,"family":"Zhou","given":"Hua-wei","email":"","affiliations":[],"preferred":false,"id":490249,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Burton, Bethany L. 0000-0001-5011-7862 blburton@usgs.gov","orcid":"https://orcid.org/0000-0001-5011-7862","contributorId":1341,"corporation":false,"usgs":true,"family":"Burton","given":"Bethany L.","email":"blburton@usgs.gov","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":false,"id":490247,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Petersen, Uni K.","contributorId":34037,"corporation":false,"usgs":true,"family":"Petersen","given":"Uni","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":490253,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Bonal, Nedra D.","contributorId":26620,"corporation":false,"usgs":true,"family":"Bonal","given":"Nedra","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":490252,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Doll, William E.","contributorId":20249,"corporation":false,"usgs":true,"family":"Doll","given":"William","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":490250,"contributorType":{"id":1,"text":"Authors"},"rank":13}]}} ,{"id":70154938,"text":"70154938 - 2013 - High-density grass carp stocking effects on a reservoir invasive plant and water quality","interactions":[],"lastModifiedDate":"2015-07-22T10:21:54","indexId":"70154938","displayToPublicDate":"2014-01-01T01:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2180,"text":"Journal of Aquatic Plant Management","active":true,"publicationSubtype":{"id":10}},"title":"High-density grass carp stocking effects on a reservoir invasive plant and water quality","docAbstract":"Stocking grass carp [Ctenopharyngodon idella (Valenciennes)] is a commonly applied technique to control nuisance aquatic vegetation in reservoirs. Factors that influence the degree of aquatic vegetation control are fish stocking density, regional climate, abundance and species composition of the aquatic plant community, and relative grass carp feeding preferences for plant species. We evaluated high-density grass carp stocking in a southeastern U.S. reservoir for control of parrot-feather [Myriophyllum aquaticum (Vell) Verdc.], an invasive aquatic plant that is not preferentially consumed by grass carp and the associated effects on water quality. Lookout Shoals Lake, a 528-ha piedmont North Carolina reservoir, was stocked with triploid grass carp at a density of 100 fish per vegetated hectare. Parrot-feather biomass in the lake was significantly reduced three months after grass carp stocking, compared to biomass in in-situ exclosures. During the second year after grass carp stocking, parrot-feather biomass in the lake compared to biomass in in-situ exclosures indicated continued control, but unexplained lack of growth within most experimental exclosures precluded biomass analyses. Increases in ambient water chlorophyll a, reactive phosphorus, and nitrate-nitrite concentrations were measured after grass carp stocking. The biological significance of observed changes in water chemistry and long-term effects on lake biota remain undetermined. Our results demonstrate that intensive grass carp stocking can control an invasive aquatic plant that is not preferentially consumed by grass carp and reveal associated changes in water quality.
","language":"English","publisher":"Aquatic Plant Management Society","publisherLocation":"Vicksburg, MS","usgsCitation":"Garner, A.B., Kwak, T.J., Manuel, K.L., and Barwick, D.H., 2013, High-density grass carp stocking effects on a reservoir invasive plant and water quality: Journal of Aquatic Plant Management, v. 51, p. 27-33.","productDescription":"7 p.","startPage":"27","endPage":"33","onlineOnly":"N","additionalOnlineFiles":"N","temporalStart":"2004-09-01","temporalEnd":"2007-04-30","ipdsId":"IP-034107","costCenters":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"links":[{"id":305882,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":305880,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://apms.org/2015/01/journal-of-aquatic-plant-management-volume-51-2013/"}],"country":"United States","state":"North Carolina","otherGeospatial":"Lookout Shoals Lake","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -81.18999481201172,\n 35.754871141690366\n ],\n [\n -81.18999481201172,\n 35.83200999390392\n ],\n [\n -81.07669830322266,\n 35.83200999390392\n ],\n [\n -81.07669830322266,\n 35.754871141690366\n ],\n [\n -81.18999481201172,\n 35.754871141690366\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"51","publishingServiceCenter":{"id":8,"text":"Raleigh PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55b0beace4b09a3b01b53093","contributors":{"authors":[{"text":"Garner, A. Brad","contributorId":145781,"corporation":false,"usgs":false,"family":"Garner","given":"A.","email":"","middleInitial":"Brad","affiliations":[],"preferred":false,"id":565285,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kwak, Thomas J. 0000-0002-0616-137X tkwak@usgs.gov","orcid":"https://orcid.org/0000-0002-0616-137X","contributorId":834,"corporation":false,"usgs":true,"family":"Kwak","given":"Thomas","email":"tkwak@usgs.gov","middleInitial":"J.","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":true,"id":564384,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Manuel, Kenneth L.","contributorId":145782,"corporation":false,"usgs":false,"family":"Manuel","given":"Kenneth","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":565286,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Barwick, D. Hugh","contributorId":31327,"corporation":false,"usgs":true,"family":"Barwick","given":"D.","email":"","middleInitial":"Hugh","affiliations":[],"preferred":false,"id":565287,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70159475,"text":"70159475 - 2013 - Hydraulically controlled discrete sampling from open boreholes","interactions":[],"lastModifiedDate":"2015-11-03T11:51:15","indexId":"70159475","displayToPublicDate":"2014-01-01T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3825,"text":"Groundwater","active":true,"publicationSubtype":{"id":10}},"title":"Hydraulically controlled discrete sampling from open boreholes","docAbstract":"Groundwater sampling from open boreholes in fractured-rock aquifers is particularly challenging because of mixing and dilution of fluid within the borehole from multiple fractures. This note presents an alternative to traditional sampling in open boreholes with packer assemblies. The alternative system called ZONFLO (zonal flow) is based on hydraulic control of borehole flow conditions. Fluid from discrete fractures zones are hydraulically isolated allowing for the collection of representative samples. In rough-faced open boreholes and formations with less competent rock, hydraulic containment may offer an attractive alternative to physical containment with packers. Preliminary test results indicate a discrete zone can be effectively hydraulically isolated from other zones within a borehole for the purpose of groundwater sampling using this new method.
","language":"English","publisher":"Wiley","doi":"10.1111/gwat.12120","usgsCitation":"Harte, P.T., 2013, Hydraulically controlled discrete sampling from open boreholes: Groundwater, v. 51, no. 6, p. 822-827, https://doi.org/10.1111/gwat.12120.","productDescription":"6 p.","startPage":"822","endPage":"827","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-044671","costCenters":[{"id":405,"text":"NH/VT office of New England Water Science Center","active":true,"usgs":true}],"links":[{"id":310985,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"51","issue":"6","publishingServiceCenter":{"id":11,"text":"Pembroke PSC"},"noUsgsAuthors":false,"publicationDate":"2013-09-24","publicationStatus":"PW","scienceBaseUri":"5639e8c1e4b0d6133fe732e4","contributors":{"authors":[{"text":"Harte, Philip T. 0000-0002-7718-1204 ptharte@usgs.gov","orcid":"https://orcid.org/0000-0002-7718-1204","contributorId":1008,"corporation":false,"usgs":true,"family":"Harte","given":"Philip","email":"ptharte@usgs.gov","middleInitial":"T.","affiliations":[{"id":405,"text":"NH/VT office of New England Water Science Center","active":true,"usgs":true},{"id":466,"text":"New England Water Science Center","active":true,"usgs":true}],"preferred":true,"id":579125,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70173427,"text":"70173427 - 2013 - Sedimentation in mountain streams: A review of methods of measurement","interactions":[],"lastModifiedDate":"2016-06-20T15:47:57","indexId":"70173427","displayToPublicDate":"2014-01-01T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5092,"text":"Natural Resources","active":true,"publicationSubtype":{"id":10}},"title":"Sedimentation in mountain streams: A review of methods of measurement","docAbstract":"The goal of this review paper is to provide a list of methods and devices used to measure sediment accumulation in wadeable streams dominated by cobble and gravel substrate. Quantitative measures of stream sedimentation are useful to monitor and study anthropogenic impacts on stream biota, and stream sedimentation is measurable with multiple sampling methods. Evaluation of sedimentation can be made by measuring the concentration of suspended sediment, or turbidity, and by determining the amount of deposited sediment, or sedimentation on the streambed. Measurements of deposited sediments are more time consuming and labor intensive than measurements of suspended sediments. Traditional techniques for characterizing sediment composition in streams include core sampling, the shovel method, visual estimation along transects, and sediment traps. This paper provides a comprehensive review of methodology, devices that can be used, and techniques for processing and analyzing samples collected to aid researchers in choosing study design and equipment.
","language":"English","publisher":"Scientific Research","doi":"10.4236/nr.2013.41011","usgsCitation":"Hedrick, L.B., Anderson, J.T., Welsh, S., and Lin, L., 2013, Sedimentation in mountain streams: A review of methods of measurement: Natural Resources, v. 4, p. 92-104, https://doi.org/10.4236/nr.2013.41011.","productDescription":"13 p.","startPage":"92","endPage":"104","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-037752","costCenters":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"links":[{"id":473378,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.4236/nr.2013.41011","text":"Publisher Index Page"},{"id":324042,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"4","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"576913e7e4b07657d19ff262","contributors":{"authors":[{"text":"Hedrick, Lara B.","contributorId":50346,"corporation":false,"usgs":true,"family":"Hedrick","given":"Lara","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":637114,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Anderson, James T.","contributorId":28071,"corporation":false,"usgs":false,"family":"Anderson","given":"James","email":"","middleInitial":"T.","affiliations":[{"id":12432,"text":"West Virginia University","active":true,"usgs":false}],"preferred":false,"id":637113,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Welsh, Stuart A. 0000-0003-0362-054X swelsh@usgs.gov","orcid":"https://orcid.org/0000-0003-0362-054X","contributorId":152088,"corporation":false,"usgs":true,"family":"Welsh","given":"Stuart A.","email":"swelsh@usgs.gov","affiliations":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"preferred":false,"id":637112,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lin, Lian-Shin","contributorId":146572,"corporation":false,"usgs":false,"family":"Lin","given":"Lian-Shin","email":"","affiliations":[{"id":12432,"text":"West Virginia University","active":true,"usgs":false}],"preferred":false,"id":637115,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70169152,"text":"70169152 - 2013 - Niche overlap, threshold food densities, and limits to prey depletion for a diving duck assemblage in an estuarine bay","interactions":[],"lastModifiedDate":"2017-07-19T15:44:15","indexId":"70169152","displayToPublicDate":"2014-01-01T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2663,"text":"Marine Ecology Progress Series","active":true,"publicationSubtype":{"id":10}},"title":"Niche overlap, threshold food densities, and limits to prey depletion for a diving duck assemblage in an estuarine bay","docAbstract":"Planning for marine conservation often requires estimates of the amount of habitat needed to support assemblages of interacting species. During winter in subtidal San Pablo Bay, California, the 3 main diving duck species are lesser scaup Aythya affinis (LESC), greater scaup A. marila (GRSC), and surf scoter Melanitta perspicillata (SUSC), which all feed almost entirely on the bivalve Corbula amurensis. Decreased body mass and fat, increased foraging effort, and major departures of these birds appeared to result from food limitation. Broad overlap in prey size, water depth, and location suggested that the 3 species responded similarly to availability of the same prey. However, an energetics model that accounts for differing body size, locomotor mode, and dive behavior indicated that each species will become limited at different stages of prey depletion in the order SUSC, then GRSC, then LESC. Depending on year, 35 to 66% of the energy in Corbula standing stocks was below estimated threshold densities for profitable foraging. Ectothermic predators, especially flounders and sturgeons, could reduce excess carrying capacity for different duck species by 4 to 10%. A substantial quantity of prey above profitability thresholds was not exploited before most ducks left San Pablo Bay. Such pre-depletion departure has been attributed in other taxa to foraging aggression. However, in these diving ducks that showed no overt aggression, this pattern may result from high costs of locating all adequate prey patches, resulting reliance on existing flocks to find food, and propensity to stay near dense flocks to avoid avian predation. For interacting species assemblages, modeling profitability thresholds can indicate the species most vulnerable to food declines. However, estimates of total habitat needed require better understanding of factors affecting the amount of prey above thresholds that is not depleted before the predators move elsewhere.
","language":"English","publisher":"Inter-Research","doi":"10.3354/meps10104","usgsCitation":"Lovvorn, J.R., De La Cruz, S., Takekawa, J.Y., Shaskey, L.E., and Richman, S.E., 2013, Niche overlap, threshold food densities, and limits to prey depletion for a diving duck assemblage in an estuarine bay: Marine Ecology Progress Series, v. 476, p. 251-268, https://doi.org/10.3354/meps10104.","productDescription":"18 p.","startPage":"251","endPage":"268","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-028764","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":473379,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3354/meps10104","text":"Publisher Index Page"},{"id":319207,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"476","publishingServiceCenter":{"id":1,"text":"Sacramento PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56f3be47e4b0f59b85e02ebb","contributors":{"authors":[{"text":"Lovvorn, James R.","contributorId":167714,"corporation":false,"usgs":false,"family":"Lovvorn","given":"James","email":"","middleInitial":"R.","affiliations":[{"id":13212,"text":"Southern Illinois University","active":true,"usgs":false}],"preferred":false,"id":623239,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"De La Cruz, Susan sdelacruz@usgs.gov","contributorId":131159,"corporation":false,"usgs":true,"family":"De La Cruz","given":"Susan","email":"sdelacruz@usgs.gov","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":623240,"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":623238,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shaskey, Laura E.","contributorId":167715,"corporation":false,"usgs":false,"family":"Shaskey","given":"Laura","email":"","middleInitial":"E.","affiliations":[{"id":17847,"text":"USGS-WERC","active":true,"usgs":false}],"preferred":false,"id":623241,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Richman, Samantha E.","contributorId":167716,"corporation":false,"usgs":false,"family":"Richman","given":"Samantha","email":"","middleInitial":"E.","affiliations":[{"id":6922,"text":"University of Rhode Island","active":true,"usgs":false}],"preferred":false,"id":623242,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ]}