{"pageNumber":"2319","pageRowStart":"57950","pageSize":"25","recordCount":184635,"records":[{"id":70029790,"text":"70029790 - 2007 - Coralline alga reveals first marine record of subarctic North Pacific climate change","interactions":[],"lastModifiedDate":"2017-11-17T16:32:05","indexId":"70029790","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Coralline alga reveals first marine record of subarctic North Pacific climate change","docAbstract":"While recent changes in subarctic North Pacific climate had dramatic effects on ecosystems and fishery yields, past climate dynamics and teleconnection patterns are poorly understood due to the absence of century-long high-resolution marine records. We present the first 117-year long annually resolved marine climate history from the western Bering Sea/Aleutian Island region using information contained in the calcitic skeleton of the long-lived crustose coralline red alga Clathromorphum nereostratum, a previously unused climate archive. The skeletal ??18O-time series indicates significant warming and/or freshening of surface waters after the middle of the 20th century. Furthermore, the time series is spatiotemporally correlated with Pacific Decadal Oscillation (PDO) and tropical El Nio??-Southern Oscillation (ENSO) indices. Even though the western Bering Sea/Aleutian Island region is believed to be outside the area of significant marine response to ENSO, we propose that an ENSO signal is transmitted via the Alaskan Stream from the Eastern North Pacific, a region of known ENSO teleconnections. Copyright 2007 by the American Geophysical Union.","language":"English","publisher":"AGU Publications","doi":"10.1029/2006GL028811","usgsCitation":"Halfar, J., Steneck, R., Schone, B., Moore, G., Joachimski, M., Kronz, A., Fietzke, J., and Estes, J.A., 2007, Coralline alga reveals first marine record of subarctic North Pacific climate change: Geophysical Research Letters, v. 34, no. 7, Article L07702; 5 p., https://doi.org/10.1029/2006GL028811.","productDescription":"Article L07702; 5 p.","costCenters":[],"links":[{"id":477246,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006gl028811","text":"Publisher Index Page"},{"id":240646,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"7","noUsgsAuthors":false,"publicationDate":"2007-04-03","publicationStatus":"PW","scienceBaseUri":"5059fc0de4b0c8380cd4e0d3","contributors":{"authors":[{"text":"Halfar, J.","contributorId":83340,"corporation":false,"usgs":true,"family":"Halfar","given":"J.","email":"","affiliations":[],"preferred":false,"id":424351,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Steneck, R.","contributorId":73414,"corporation":false,"usgs":true,"family":"Steneck","given":"R.","email":"","affiliations":[],"preferred":false,"id":424350,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schone, B.","contributorId":45523,"corporation":false,"usgs":true,"family":"Schone","given":"B.","email":"","affiliations":[],"preferred":false,"id":424347,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Moore, G.W.K.","contributorId":71390,"corporation":false,"usgs":true,"family":"Moore","given":"G.W.K.","email":"","affiliations":[],"preferred":false,"id":424349,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Joachimski, M.","contributorId":84566,"corporation":false,"usgs":true,"family":"Joachimski","given":"M.","email":"","affiliations":[],"preferred":false,"id":424352,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kronz, A.","contributorId":92496,"corporation":false,"usgs":true,"family":"Kronz","given":"A.","affiliations":[],"preferred":false,"id":424353,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Fietzke, J.","contributorId":41656,"corporation":false,"usgs":true,"family":"Fietzke","given":"J.","affiliations":[],"preferred":false,"id":424346,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Estes, James A. jim_estes@usgs.gov","contributorId":53325,"corporation":false,"usgs":true,"family":"Estes","given":"James","email":"jim_estes@usgs.gov","middleInitial":"A.","affiliations":[{"id":6949,"text":"University of California, Santa Cruz","active":true,"usgs":false},{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":false,"id":424348,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":80480,"text":"ofr20071274 - 2007 - Aerial population estimates of wild horses (Equus caballus) in the adobe town and salt wells creek herd management areas using an integrated simultaneous double-count and sightability bias correction technique","interactions":[],"lastModifiedDate":"2025-06-05T17:30:05.030317","indexId":"ofr20071274","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-1274","displayTitle":"Aerial population estimates of wild horses (Equus caballus) in the adobe town and salt wells creek herd management areas using an integrated simultaneous double-count and sightability bias correction technique","title":"Aerial population estimates of wild horses (Equus caballus) in the adobe town and salt wells creek herd management areas using an integrated simultaneous double-count and sightability bias correction technique","docAbstract":"An aerial survey technique combining simultaneous double-count and sightability bias correction methodologies was used to estimate the population of wild horses inhabiting Adobe Town and Salt Wells Creek Herd Management Areas, Wyoming. Based on 5 surveys over 4 years, we conclude that the technique produced estimates consistent with the known number of horses removed between surveys and an annual population growth rate of 16.2 percent per year. Therefore, evidence from this series of surveys supports the validity of this survey method. Our results also indicate that the ability of aerial observers to see horse groups is very strongly dependent on skill of the individual observer, size of the horse group, and vegetation cover. It is also more modestly dependent on the ruggedness of the terrain and the position of the sun relative to the observer. We further conclude that censuses, or uncorrected raw counts, are inadequate estimates of population size for this herd. Such uncorrected counts were all undercounts in our trials, and varied in magnitude from year to year and observer to observer. As of April 2007, we estimate that the population of the Adobe Town /Salt Wells Creek complex is 906 horses with a 95 percent confidence interval ranging from 857 to 981 horses.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr20071274","collaboration":"Prepared in collaboration with the U.S. Bureau of Land Management","usgsCitation":"Lubow, B., and Ransom, J.I., 2007, Aerial population estimates of wild horses (Equus caballus) in the adobe town and salt wells creek herd management areas using an integrated simultaneous double-count and sightability bias correction technique: U.S. Geological Survey Open-File Report 2007-1274, iii, 13 p., https://doi.org/10.3133/ofr20071274.","productDescription":"iii, 13 p.","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":489703,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1274/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":192044,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2007/1274/report-thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b03e4b07f02db698e75","contributors":{"authors":[{"text":"Lubow, Bruce C.","contributorId":59520,"corporation":false,"usgs":true,"family":"Lubow","given":"Bruce C.","affiliations":[],"preferred":false,"id":292699,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ransom, Jason I. 0000-0002-5930-4004","orcid":"https://orcid.org/0000-0002-5930-4004","contributorId":71645,"corporation":false,"usgs":true,"family":"Ransom","given":"Jason","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":292700,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70030065,"text":"70030065 - 2007 - Sea level fluctuations in central California at subtidal to decadal and longer time scales with implications for San Francisco Bay, California","interactions":[],"lastModifiedDate":"2023-08-02T12:16:40.648602","indexId":"70030065","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1587,"text":"Estuarine, Coastal and Shelf Science","active":true,"publicationSubtype":{"id":10}},"title":"Sea level fluctuations in central California at subtidal to decadal and longer time scales with implications for San Francisco Bay, California","docAbstract":"

Sea level elevations from near the mouth of San Francisco Bay are used to describe the low-frequency variability of forcing of the coastal ocean on the Bay at a variety of temporal scales. About 90% of subtidal fluctuations in sea level in San Francisco Bay are driven by the sea level variations in the coastal ocean that propagate into the Bay at the estuary mouth. We use the 100-year sea level record available at San Francisco to document a 1.9 mm/yr mean sea level rise, and to determine fluctuations related to El Nino-Southern Oscillation (ENSO) and other climatic events. At time scales greater than 1 year, ENSO dominates the sea level signal and can result in fluctuations in sea level of 10–15 cm. Alongshore wind stress data from central California are also analyzed to determine the impact of changes in coastal elevation at the mouth of San Francisco Bay within the synoptic wind band of 2–30 days. At least 40% of the subtidal fluctuations in sea level of the Bay are tied to the large-scale regional wind field affecting sea level variations in the coastal ocean, with little local, direct wind forcing of the Bay itself. The majority of the subtidal sea level fluctuations within the Bay that are not related to the coastal ocean sea level signal are forced by an east–west sea level gradient resulting from tidally induced variations in sea level at specific beat frequencies that are enhanced in the northern reach of the Bay. River discharge into the Bay through the Sacramento and San Joaquin River Delta also contributes to the east–west gradient, but to a lesser degree.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.ecss.2007.02.009","issn":"02727714","usgsCitation":"Ryan, H.F., and Noble, M., 2007, Sea level fluctuations in central California at subtidal to decadal and longer time scales with implications for San Francisco Bay, California: Estuarine, Coastal and Shelf Science, v. 73, no. 3-4, p. 538-550, https://doi.org/10.1016/j.ecss.2007.02.009.","productDescription":"13 p.","startPage":"538","endPage":"550","numberOfPages":"13","costCenters":[],"links":[{"id":240191,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Bay","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -122.9769949901727,\n 38.3199725035395\n ],\n [\n -122.9769949901727,\n 37.31367754212043\n ],\n [\n -121.59331131977186,\n 37.31367754212043\n ],\n [\n -121.59331131977186,\n 38.3199725035395\n ],\n [\n -122.9769949901727,\n 38.3199725035395\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"73","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b87e8e4b08c986b316700","contributors":{"authors":[{"text":"Ryan, H. F.","contributorId":18002,"corporation":false,"usgs":true,"family":"Ryan","given":"H.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":425573,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Noble, M.A.","contributorId":93513,"corporation":false,"usgs":true,"family":"Noble","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":425574,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70029967,"text":"70029967 - 2007 - Arsenic attenuation by oxidized aquifer sediments in Bangladesh","interactions":[],"lastModifiedDate":"2023-08-02T12:26:36.475241","indexId":"70029967","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3352,"text":"Science of the Total Environment","active":true,"publicationSubtype":{"id":10}},"title":"Arsenic attenuation by oxidized aquifer sediments in Bangladesh","docAbstract":"

Recognition of arsenic (As) contamination of shallow fluvio-deltaic aquifers in the Bengal Basin has resulted in increasing exploitation of groundwater from deeper aquifers that generally contain low concentrations of dissolved As. Pumping-induced infiltration of high-As groundwater could eventually cause As concentrations in these aquifers to increase. This study investigates the adsorption capacity for As of sediment from a low-As aquifer near Dhaka, Bangladesh. A shallow, chemically-reducing aquifer at this site extends to a depth of 50 m and has maximum As concentrations in groundwater of 900 μg/L. At depths greater than 50 m, geochemical conditions are more oxidizing and groundwater has < 5 μg/L As. There is no thick layer of clay at this site to inhibit vertical transport of groundwater.

Arsenite [As(III)] is the dominant oxidation state in contaminated groundwater; however, data from laboratory batch experiments show that As(III) is oxidized to arsenate [As(V)] by manganese (Mn) minerals that are present in the oxidized sediment. Thus, the long-term viability of the deeper aquifers as a source of water supply is likely to depend on As(V) adsorption. The adsorption capacity of these sediments is a function of the oxidation state of As and the concentration of other solutes that compete for adsorption sites. Arsenite that was not oxidized did adsorb, but to a much lesser extent than As(V). Phosphate (P) caused a substantial decrease in As(V) adsorption. Increasing pH and concentrations of silica (Si) had lesser effects on As(V) adsorption. The effect of bicarbonate (HCO3) on As(V) adsorption was negligible. Equilibrium constants for adsorption of As(V), As(III), P, Si, HCO3, and H were determined from the experimental data and a quantitative model developed. Oxidation of As(III) was modeled with a first-order rate constant. This model was used to successfully simulate As(V) adsorption in the presence of multiple competing solutes. Results from these experiments show that oxidized sediments have a substantial but limited capacity for removal of As from groundwater.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.scitotenv.2006.11.029","issn":"00489697","usgsCitation":"Stollenwerk, K.G., Breit, G.N., Welch, A.H., Yount, J., Whitney, J.W., Foster, A.L., Uddin, M., Majumder, R., and Ahmed, N., 2007, Arsenic attenuation by oxidized aquifer sediments in Bangladesh: Science of the Total Environment, v. 379, no. 2-3, p. 133-150, https://doi.org/10.1016/j.scitotenv.2006.11.029.","productDescription":"18 p.","startPage":"133","endPage":"150","numberOfPages":"18","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":477071,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.scitotenv.2006.11.029","text":"Publisher Index Page"},{"id":240253,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Bangladesh","city":"Dhaka","otherGeospatial":"Bengal Basin","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[92.67272,22.04124],[92.65226,21.32405],[92.30323,21.47549],[92.36855,20.67088],[92.08289,21.1922],[92.02522,21.70157],[91.83489,22.18294],[91.41709,22.76502],[90.49601,22.80502],[90.58696,22.39279],[90.27297,21.83637],[89.84747,22.03915],[89.70205,21.85712],[89.41886,21.96618],[89.03196,22.05571],[88.87631,22.87915],[88.52977,23.63114],[88.69994,24.23371],[88.08442,24.50166],[88.30637,24.86608],[88.93155,25.23869],[88.20979,25.76807],[88.56305,26.44653],[89.35509,26.01441],[89.83248,25.96508],[89.92069,25.26975],[90.87221,25.1326],[91.7996,25.14743],[92.3762,24.97669],[91.91509,24.13041],[91.46773,24.07264],[91.15896,23.50353],[91.70648,22.98526],[91.86993,23.62435],[92.14603,23.6275],[92.67272,22.04124]]]},\"properties\":{\"name\":\"Bangladesh\"}}]}","volume":"379","issue":"2-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ed8be4b0c8380cd49882","contributors":{"authors":[{"text":"Stollenwerk, Kenneth G. kgstolle@usgs.gov","contributorId":578,"corporation":false,"usgs":true,"family":"Stollenwerk","given":"Kenneth","email":"kgstolle@usgs.gov","middleInitial":"G.","affiliations":[],"preferred":true,"id":425109,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Breit, George N. 0000-0003-2188-6798 gbreit@usgs.gov","orcid":"https://orcid.org/0000-0003-2188-6798","contributorId":1480,"corporation":false,"usgs":true,"family":"Breit","given":"George","email":"gbreit@usgs.gov","middleInitial":"N.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":425111,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Welch, Alan H.","contributorId":35399,"corporation":false,"usgs":true,"family":"Welch","given":"Alan","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":425105,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Yount, James C.","contributorId":39341,"corporation":false,"usgs":true,"family":"Yount","given":"James C.","affiliations":[],"preferred":false,"id":425108,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Whitney, John W. 0000-0003-3824-3692 jwhitney@usgs.gov","orcid":"https://orcid.org/0000-0003-3824-3692","contributorId":804,"corporation":false,"usgs":true,"family":"Whitney","given":"John","email":"jwhitney@usgs.gov","middleInitial":"W.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":425107,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Foster, Andrea L. 0000-0003-1362-0068 afoster@usgs.gov","orcid":"https://orcid.org/0000-0003-1362-0068","contributorId":1740,"corporation":false,"usgs":true,"family":"Foster","given":"Andrea","email":"afoster@usgs.gov","middleInitial":"L.","affiliations":[{"id":662,"text":"Western Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":425106,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Uddin, M.N.","contributorId":105979,"corporation":false,"usgs":true,"family":"Uddin","given":"M.N.","email":"","affiliations":[],"preferred":false,"id":425113,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Majumder, R.K.","contributorId":94929,"corporation":false,"usgs":true,"family":"Majumder","given":"R.K.","email":"","affiliations":[],"preferred":false,"id":425112,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Ahmed, N.","contributorId":71846,"corporation":false,"usgs":true,"family":"Ahmed","given":"N.","email":"","affiliations":[],"preferred":false,"id":425110,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":70029791,"text":"70029791 - 2007 - Genetic characterization of Common Eiders breeding in the Yukon-Kuskokwim Delta, Alaska","interactions":[],"lastModifiedDate":"2018-08-20T18:18:22","indexId":"70029791","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Genetic characterization of Common Eiders breeding in the Yukon-Kuskokwim Delta, Alaska","docAbstract":"

We assessed population genetic subdivision among four colonies of Common Eiders (Somateria mollissima v-nigrum) breeding in the Yukon-Kuskokwim Delta (YKD), Alaska, using microsatellite genotypes and DNA sequences with differing modes of inheritance. Significant, albeit low, levels of genetic differentiation were observed between mainland populations and Kigigak Island for nuclear intron lamin A and mitochondrial DNA (mtDNA) control region. Intercolony variation in haplotypic frequencies also was observed at mtDNA. Positive growth signatures assayed from microsatellites, nuclear introns, and mtDNA indicate recent colonization of the YKD, and may explain the low levels of structuring observed. Gene flow estimates based on microsatellites, nuclear introns, and mtDNA suggest asymmetrical gene flow between mainland colonies and Kigigak Island, with more individuals on average dispersing from mainland populations to Kigigak Island than vice versa. The directionality of gene flow observed may be explained by the colonization of the YKD from northern glacial refugia or by YKD metapopulation dynamics.

","language":"English","publisher":"Cooper Ornithological Society","doi":"10.1650/0010-5422(2007)109[878:GCOCEB]2.0.CO;2","usgsCitation":"Sonsthagen, S.A., Talbot, S.L., and McCracken, K.G., 2007, Genetic characterization of Common Eiders breeding in the Yukon-Kuskokwim Delta, Alaska: The Condor, v. 109, no. 4, p. 878-893, https://doi.org/10.1650/0010-5422(2007)109[878:GCOCEB]2.0.CO;2.","productDescription":"16 p.","startPage":"878","endPage":"893","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"links":[{"id":477224,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1650/0010-5422(2007)109[878:gcoceb]2.0.co;2","text":"Publisher Index Page"},{"id":240676,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Yukon-Kuskokwim Delta","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -166.036376953125,\n 60.68931752009124\n ],\n [\n -164.443359375,\n 60.68931752009124\n ],\n [\n -164.443359375,\n 61.39145881217429\n ],\n [\n -166.036376953125,\n 61.39145881217429\n ],\n [\n -166.036376953125,\n 60.68931752009124\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"109","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1568e4b0c8380cd54dd3","contributors":{"authors":[{"text":"Sonsthagen, Sarah A. 0000-0001-6215-5874 ssonsthagen@usgs.gov","orcid":"https://orcid.org/0000-0001-6215-5874","contributorId":3711,"corporation":false,"usgs":true,"family":"Sonsthagen","given":"Sarah","email":"ssonsthagen@usgs.gov","middleInitial":"A.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":424356,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Talbot, Sandra L. 0000-0002-3312-7214 stalbot@usgs.gov","orcid":"https://orcid.org/0000-0002-3312-7214","contributorId":140512,"corporation":false,"usgs":true,"family":"Talbot","given":"Sandra","email":"stalbot@usgs.gov","middleInitial":"L.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":424355,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McCracken, Kevin G.","contributorId":72309,"corporation":false,"usgs":false,"family":"McCracken","given":"Kevin","email":"","middleInitial":"G.","affiliations":[{"id":6752,"text":"University of Alaska Fairbanks","active":true,"usgs":false}],"preferred":false,"id":424354,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029792,"text":"70029792 - 2007 - Origin of halite brine in the Onondaga Trough near Syracuse, New York State, USA: Modeling geochemistry and variable-density flow","interactions":[],"lastModifiedDate":"2018-10-17T11:35:25","indexId":"70029792","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"Origin of halite brine in the Onondaga Trough near Syracuse, New York State, USA: Modeling geochemistry and variable-density flow","docAbstract":"

Halite brine (saturation ranging from 45 to 80%) lies within glacial sediments that fill the Onondaga Trough, a bedrock valley deepened by Pleistocene glaciation near Syracuse, New York State, USA. The most concentrated brine occupies the northern end of the trough, about 10 km downgradient of the northern limit of halite beds in the Silurian Salina Group, the assumed source of salt. The chemical composition of the brine and its radiocarbon age suggest that the brine originally formed about 16,700 years ago through dissolution of halite by glacial melt water and later mixed with saline bedrock water. Two hypotheses regarding the formation of the brine pool were tested through variable-density flow simulations using SEAWAT. Simulation results supported the first hypothesis that the brine pool was derived from a source in the glacial sediments and then migrated to its current position, where it has persisted for over 16,000 years. A second hypothesis that the brine pool formed through steady accumulation of brine from upward flow of a source in the underlying bedrock was not supported by simulation results, because the simulated age distribution was much younger than the age estimated from geochemical modeling.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrogeology Journal","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Springer-Verlag","doi":"10.1007/s10040-007-0186-9","issn":"14312174","usgsCitation":"Yager, R.M., Kappel, W.M., and Plummer, N., 2007, Origin of halite brine in the Onondaga Trough near Syracuse, New York State, USA: Modeling geochemistry and variable-density flow: Hydrogeology Journal, v. 15, no. 7, p. 1321-1339, https://doi.org/10.1007/s10040-007-0186-9.","productDescription":"19 p.","startPage":"1321","endPage":"1339","numberOfPages":"19","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":477062,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://zenodo.org/record/1232767","text":"External Repository"},{"id":240677,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213088,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10040-007-0186-9"}],"country":"United States","state":"New York","city":"Syracuse","otherGeospatial":"Onondaga Trough","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -76.33333333333333,42.75 ], [ -76.33333333333333,43.166666666666664 ], [ -76.08333333333333,43.166666666666664 ], [ -76.08333333333333,42.75 ], [ -76.33333333333333,42.75 ] ] ] } } ] }","volume":"15","issue":"7","noUsgsAuthors":false,"publicationDate":"2007-05-24","publicationStatus":"PW","scienceBaseUri":"505a70d7e4b0c8380cd762a8","contributors":{"authors":[{"text":"Yager, Richard M. 0000-0001-7725-1148 ryager@usgs.gov","orcid":"https://orcid.org/0000-0001-7725-1148","contributorId":950,"corporation":false,"usgs":true,"family":"Yager","given":"Richard","email":"ryager@usgs.gov","middleInitial":"M.","affiliations":[{"id":614,"text":"Virginia Water Science Center","active":true,"usgs":true},{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"preferred":true,"id":424357,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kappel, William M. 0000-0002-2382-9757 wkappel@usgs.gov","orcid":"https://orcid.org/0000-0002-2382-9757","contributorId":1074,"corporation":false,"usgs":true,"family":"Kappel","given":"William","email":"wkappel@usgs.gov","middleInitial":"M.","affiliations":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"preferred":true,"id":424358,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Plummer, Niel 0000-0002-4020-1013 nplummer@usgs.gov","orcid":"https://orcid.org/0000-0002-4020-1013","contributorId":190100,"corporation":false,"usgs":true,"family":"Plummer","given":"Niel","email":"nplummer@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":424359,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029793,"text":"70029793 - 2007 - Movement and habitat use of stocked juvenile paddlefish in the Ohio River system, Pennsylvania","interactions":[],"lastModifiedDate":"2012-03-12T17:21:34","indexId":"70029793","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Movement and habitat use of stocked juvenile paddlefish in the Ohio River system, Pennsylvania","docAbstract":"In 2002 and 2003 we released a total of 66 hatchery-reared, juvenile paddlefish Polyodon spathula (249-318 mm eye-to-fork length) in Pennsylvania's upper Ohio River system and tracked them with radiotelemetry in two different pools of the Ohio and Allegheny rivers to determine (1) poststocking survival, (2) whether release site influences survival, (3) dispersal distance and direction of movement, and (4) habitat selection. Survival was fair (mean = 78% in 2002 and 67% in 2003) for 0.23-0.43-kg paddlefish after 9 weeks. In 2003, fish stocked in the upstream half of the pool had a greater survival (100%) after 63 d than those stocked in the downstream half (44%). Within 4 d of stocking, 77% of juvenile paddlefish were located in tailwaters, and fish found these habitats regardless of stocking location. Habitat measurements at all postdispersal locations had median depths of 5.2 and 6.1 m in 2002 and 2003, respectively, and median near-surface velocities of 0.17 and 0.12 m/s. Fish selected tailwater habitats and avoided habitats with disturbance from commercial barge traffic in both years. ?? Copyright by the American Fisheries Society 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"North American Journal of Fisheries Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/M06-232.1","issn":"02755947","usgsCitation":"Barry, P., Carline, R., Argent, D., and Kimmel, W.G., 2007, Movement and habitat use of stocked juvenile paddlefish in the Ohio River system, Pennsylvania: North American Journal of Fisheries Management, v. 27, no. 4, p. 1316-1325, https://doi.org/10.1577/M06-232.1.","startPage":"1316","endPage":"1325","numberOfPages":"10","costCenters":[],"links":[{"id":240678,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213089,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/M06-232.1"}],"volume":"27","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-11-01","publicationStatus":"PW","scienceBaseUri":"505a5f12e4b0c8380cd70d59","contributors":{"authors":[{"text":"Barry, P.M.","contributorId":31574,"corporation":false,"usgs":true,"family":"Barry","given":"P.M.","email":"","affiliations":[],"preferred":false,"id":424360,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Carline, R.F.","contributorId":107444,"corporation":false,"usgs":true,"family":"Carline","given":"R.F.","affiliations":[],"preferred":false,"id":424362,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Argent, D.G.","contributorId":107937,"corporation":false,"usgs":true,"family":"Argent","given":"D.G.","email":"","affiliations":[],"preferred":false,"id":424363,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kimmel, William G.","contributorId":84929,"corporation":false,"usgs":true,"family":"Kimmel","given":"William","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":424361,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70029794,"text":"70029794 - 2007 - Ecological gradients within a Pennsylvanian mire forest","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70029794","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Ecological gradients within a Pennsylvanian mire forest","docAbstract":"Pennsylvanian coals represent remains of the earliest peat-forming rain forests, but there is no current consensus on forest ecology. Localized studies of fossil forests suggest intermixture of taxa (heterogeneity), while, in contrast, coal ball and palynological analyses imply the existence of pronounced ecological gradients. Here, we report the discovery of a spectacular fossil forest preserved over ???1000 ha on top of the Pennsylvanian (Desmoinesian) Herrin (No. 6) Coal of Illinois, United States. The forest was abruptly drowned when fault movement dropped a segment of coastal mire below sea level. In the largest study of its kind to date, forest composition is statistically analyzed within a well-constrained paleogeographic context. Findings resolve apparent conflicts in models of Pennsylvanian mire ecology by confirming the existence of forest heterogeneity at the local scale, while additionally demonstrating the emergence of ecological gradients at landscape scale. ?? 2007 The Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/G23472A.1","issn":"00917613","usgsCitation":"DiMichele, W.A., Falcon-Lang, H.J., Nelson, W., Elrick, S., and Ames, P., 2007, Ecological gradients within a Pennsylvanian mire forest: Geology, v. 35, no. 5, p. 415-418, https://doi.org/10.1130/G23472A.1.","startPage":"415","endPage":"418","numberOfPages":"4","costCenters":[],"links":[{"id":212652,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G23472A.1"},{"id":240172,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"35","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0553e4b0c8380cd50d61","contributors":{"authors":[{"text":"DiMichele, William A.","contributorId":97631,"corporation":false,"usgs":true,"family":"DiMichele","given":"William","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":424368,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Falcon-Lang, H. J.","contributorId":41220,"corporation":false,"usgs":true,"family":"Falcon-Lang","given":"H.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":424367,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nelson, W.J.","contributorId":17762,"corporation":false,"usgs":true,"family":"Nelson","given":"W.J.","email":"","affiliations":[],"preferred":false,"id":424365,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Elrick, S.D.","contributorId":38364,"corporation":false,"usgs":true,"family":"Elrick","given":"S.D.","email":"","affiliations":[],"preferred":false,"id":424366,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ames, P.R.","contributorId":9823,"corporation":false,"usgs":true,"family":"Ames","given":"P.R.","email":"","affiliations":[],"preferred":false,"id":424364,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70029872,"text":"70029872 - 2007 - Authigenic carbonate formation at hydrocarbon seeps in continental margin sediments: A comparative study","interactions":[],"lastModifiedDate":"2023-08-04T11:36:10.550416","indexId":"70029872","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1371,"text":"Deep-Sea Research Part II: Topical Studies in Oceanography","active":true,"publicationSubtype":{"id":10}},"title":"Authigenic carbonate formation at hydrocarbon seeps in continental margin sediments: A comparative study","docAbstract":"

Authigenic carbonates from five continental margin locations, the Eel River Basin, Monterey Bay, Santa Barbara Basin, the Sea of Okhotsk, and the North Sea, exhibit a wide range of mineralogical and stable isotopic compositions. These precipitates include aragonite, low- and high-Mg calcite, and dolomite. The carbon isotopic composition of carbonates varies widely, ranging from −60‰ to +26‰, indicating complex carbon sources that include 13C-depleted microbial and thermogenic methane and residual, 13C-enriched, bicarbonate. A similarly large variability of δ18O values (−5.5‰ to +8.9‰) demonstrates the geochemical complexity of these sites, with some samples pointing toward an 18O-enriched oxygen source possibly related to advection of 18O-enriched formation water or to the decomposition of gas hydrate. Samples depleted in 18O are consistent with formation deeper in the sediment or mixing of pore fluids with meteoric water during carbonate precipitation.

A wide range of isotopic and mineralogical variation in authigenic carbonate composition within individual study areas but common trends across multiple geographic areas suggest that these parameters alone are not indicative for certain tectonic or geochemical settings. Rather, the observed variations probably reflect local controls on the flux of carbon and other reduced ions, such as faults, fluid conduits, the presence or absence of gas hydrate in the sediment, and the temporal evolution of the local carbon reservoir.

Areas with seafloor carbonates that indicate formation at greater depth below the sediment–water interface must have undergone uplift and erosion in the past or are still being uplifted. Consequently, the occurrence of carbonate slabs on the seafloor in areas of active hydrocarbon seepage is commonly an indicator of exhumation following carbonate precipitation in the shallow subsurface. Therefore, careful petrographic and geochemical analyses are critical components necessary for the correct interpretation of processes related to hydrocarbon seepage in continental margin environments and elsewhere.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.dsr2.2007.04.010","issn":"09670645","usgsCitation":"Naehr, T., Eichhubl, P., Orphan, V., Hovland, M., Paull, C.K., Ussler, W., Lorenson, T., and Greene, H., 2007, Authigenic carbonate formation at hydrocarbon seeps in continental margin sediments: A comparative study: Deep-Sea Research Part II: Topical Studies in Oceanography, v. 54, no. 11-13, p. 1268-1291, https://doi.org/10.1016/j.dsr2.2007.04.010.","productDescription":"24 p.","startPage":"1268","endPage":"1291","numberOfPages":"24","costCenters":[],"links":[{"id":240352,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"54","issue":"11-13","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059eeede4b0c8380cd4a033","contributors":{"authors":[{"text":"Naehr, T.H.","contributorId":87758,"corporation":false,"usgs":true,"family":"Naehr","given":"T.H.","email":"","affiliations":[],"preferred":false,"id":424680,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Eichhubl, P.","contributorId":9060,"corporation":false,"usgs":true,"family":"Eichhubl","given":"P.","email":"","affiliations":[],"preferred":false,"id":424676,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Orphan, V.J.","contributorId":96902,"corporation":false,"usgs":true,"family":"Orphan","given":"V.J.","affiliations":[],"preferred":false,"id":424681,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hovland, M.","contributorId":51487,"corporation":false,"usgs":true,"family":"Hovland","given":"M.","email":"","affiliations":[],"preferred":false,"id":424678,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Paull, C. K.","contributorId":86845,"corporation":false,"usgs":false,"family":"Paull","given":"C.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":424679,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ussler, W. III","contributorId":101048,"corporation":false,"usgs":true,"family":"Ussler","given":"W.","suffix":"III","affiliations":[],"preferred":false,"id":424682,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Lorenson, T.D.","contributorId":7715,"corporation":false,"usgs":true,"family":"Lorenson","given":"T.D.","email":"","affiliations":[],"preferred":false,"id":424675,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Greene, H. Gary","contributorId":38958,"corporation":false,"usgs":true,"family":"Greene","given":"H. Gary","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":424677,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70029795,"text":"70029795 - 2007 - Altered stream-flow regimes and invasive plant species: The Tamarix case","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70029795","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1839,"text":"Global Ecology and Biogeography","active":true,"publicationSubtype":{"id":10}},"title":"Altered stream-flow regimes and invasive plant species: The Tamarix case","docAbstract":"Aim: To test the hypothesis that anthropogenic alteration of stream-flow regimes is a key driver of compositional shifts from native to introduced riparian plant species. Location: The arid south-western United States; 24 river reaches in the Gila and Lower Colorado drainage basins of Arizona. Methods: We compared the abundance of three dominant woody riparian taxa (native Populus fremontii and Salix gooddingii, and introduced Tamarix) between river reaches that varied in stream-flow permanence (perennial vs. intermittent), presence or absence of an upstream flow-regulating dam, and presence or absence of municipal effluent as a stream water source. Results: Populus and Salix were the dominant pioneer trees along the reaches with perennial flow and a natural flood regime. In contrast, Tamarix had high abundance (patch area and basal area) along reaches with intermittent stream flows (caused by natural and cultural factors), as well as those with dam-regulated flows. Main conclusions: Stream-flow regimes are strong determinants of riparian vegetation structure, and hydrological alterations can drive dominance shifts to introduced species that have an adaptive suite of traits. Deep alluvial groundwater on intermittent rivers favours the deep-rooted, stress-adapted Tamarix over the shallower-rooted and more competitive Populus and Salix. On flow-regulated rivers, shifts in flood timing favour the reproductively opportunistic Tamarix over Populus and Salix, both of which have narrow germination windows. The prevailing hydrological conditions thus favour a new dominant pioneer species in the riparian corridors of the American Southwest. These results reaffirm the importance of reinstating stream-flow regimes (inclusive of groundwater flows) for re-establishing the native pioneer trees as the dominant forest type. ?? 2007 The Authors Journal compilation ?? 2007 Blackwell Publishing Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Global Ecology and Biogeography","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1466-8238.2007.00297.x","issn":"1466822X","usgsCitation":"Stromberg, J., Lite, S., Marler, R., Paradzick, C., Shafroth, P., Shorrock, D., White, J.M., and White, M., 2007, Altered stream-flow regimes and invasive plant species: The Tamarix case: Global Ecology and Biogeography, v. 16, no. 3, p. 381-393, https://doi.org/10.1111/j.1466-8238.2007.00297.x.","startPage":"381","endPage":"393","numberOfPages":"13","costCenters":[],"links":[{"id":212653,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1466-8238.2007.00297.x"},{"id":240173,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"16","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-01-18","publicationStatus":"PW","scienceBaseUri":"5059e97be4b0c8380cd482ec","contributors":{"authors":[{"text":"Stromberg, J.C.","contributorId":81455,"corporation":false,"usgs":true,"family":"Stromberg","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":424376,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lite, S.J.","contributorId":35535,"corporation":false,"usgs":true,"family":"Lite","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":424372,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Marler, R.","contributorId":13440,"corporation":false,"usgs":true,"family":"Marler","given":"R.","email":"","affiliations":[],"preferred":false,"id":424369,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Paradzick, C.","contributorId":17426,"corporation":false,"usgs":true,"family":"Paradzick","given":"C.","affiliations":[],"preferred":false,"id":424371,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Shafroth, P.B.","contributorId":65041,"corporation":false,"usgs":true,"family":"Shafroth","given":"P.B.","email":"","affiliations":[],"preferred":false,"id":424375,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Shorrock, D.","contributorId":58465,"corporation":false,"usgs":true,"family":"Shorrock","given":"D.","email":"","affiliations":[],"preferred":false,"id":424374,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"White, J. M.","contributorId":40268,"corporation":false,"usgs":true,"family":"White","given":"J.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":424373,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"White, M.S.","contributorId":14199,"corporation":false,"usgs":true,"family":"White","given":"M.S.","email":"","affiliations":[],"preferred":false,"id":424370,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70029759,"text":"70029759 - 2007 - Crustal controls on magmatic-hydrothermal systems: A geophysical comparison of White River, Washington, with Goldfield, Nevada","interactions":[],"lastModifiedDate":"2023-08-14T11:57:55.217241","indexId":"70029759","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1820,"text":"Geosphere","active":true,"publicationSubtype":{"id":10}},"title":"Crustal controls on magmatic-hydrothermal systems: A geophysical comparison of White River, Washington, with Goldfield, Nevada","docAbstract":"

The White River altered area, Washington, and the Goldfield mining district, Nevada, are nearly contemporaneous Tertiary (ca. 20 Ma) calc-alkaline igneous centers with large exposures of shallow (<1 km depth) magmatic-hydrothermal, acid-sulfate alteration. Goldfield is the largest known high-sulfidation gold deposit in North America. At White River, silica is the only commodity exploited to date, but, based on its similarities with Goldfield, White River may have potential for concealed precious and/or base metal deposits at shallow depth. Both areas are products of the ancestral Cascade arc. Goldfield lies within the Great Basin physiographic province in an area of middle Miocene and younger Basin and Range and Walker Lane faulting, whereas White River is largely unaffected by young faults. However, west-northwest–striking magnetic anomalies at White River do correspond with mapped faults synchronous with magmatism, and other linear anomalies may reflect contemporaneous concealed faults. The White River altered area lies immediately south of the west-northwest–striking White River fault zone and north of a postulated fault with similar orientation. Structural data from the White River altered area indicate that alteration developed synchronously with an anomalous stress field conducive to left-lateral, strike-slip displacement on west-northwest–striking faults. Thus, the White River alteration may have developed in a transient transtensional region between the two strike-slip faults, analogous to models proposed for Goldfield and other mineral deposits in transverse deformational zones. Gravity and magnetic anomalies provide evidence for a pluton beneath the White River altered area that may have provided heat and fluids to overlying volcanic rocks. East– to east-northeast–striking extensional faults and/or fracture zones in the step-over region, also expressed in magnetic anomalies, may have tapped this intrusion and provided vertical and lateral transport of fluids to now silicified areas. By analogy to Goldfield, geophysical anomalies at the White River altered area may serve as proxies for geologic mapping in identifying faults, fractures, and intrusions relevant to hydrothermal alteration and ore formation in areas of poor exposure.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/GES00071.1","issn":"1553040X","usgsCitation":"Blakely, R., John, D., Box, S.E., Berger, B.R., Fleck, R., Ashley, R.P., Newport, G., and Heinemeyer, G., 2007, Crustal controls on magmatic-hydrothermal systems: A geophysical comparison of White River, Washington, with Goldfield, Nevada: Geosphere, v. 3, no. 2, p. 91-107, https://doi.org/10.1130/GES00071.1.","productDescription":"17 p.","startPage":"91","endPage":"107","numberOfPages":"17","costCenters":[],"links":[{"id":477052,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1130/ges00071.1","text":"Publisher Index Page"},{"id":240205,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada, Washington","otherGeospatial":"Goldfield, White River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -122.17833421194669,\n 47.11685729929329\n ],\n [\n -122.17833421194669,\n 46.57608099679683\n ],\n [\n -121.3021869304055,\n 46.57608099679683\n ],\n [\n -121.3021869304055,\n 47.11685729929329\n ],\n [\n -122.17833421194669,\n 47.11685729929329\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -118.31602945097629,\n 38.38879088376936\n ],\n [\n -118.31602945097629,\n 36.8656758155182\n ],\n [\n -116.37140987487302,\n 36.8656758155182\n ],\n [\n -116.37140987487302,\n 38.38879088376936\n ],\n [\n -118.31602945097629,\n 38.38879088376936\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"3","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fcdae4b0c8380cd4e481","contributors":{"authors":[{"text":"Blakely, R.J. 0000-0003-1701-5236","orcid":"https://orcid.org/0000-0003-1701-5236","contributorId":70755,"corporation":false,"usgs":true,"family":"Blakely","given":"R.J.","affiliations":[],"preferred":false,"id":424161,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"John, D. A.","contributorId":43748,"corporation":false,"usgs":true,"family":"John","given":"D. A.","affiliations":[],"preferred":false,"id":424159,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Box, S. E.","contributorId":38567,"corporation":false,"usgs":true,"family":"Box","given":"S.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":424158,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Berger, B. R.","contributorId":77914,"corporation":false,"usgs":true,"family":"Berger","given":"B.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":424162,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Fleck, R.J.","contributorId":25147,"corporation":false,"usgs":true,"family":"Fleck","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":424156,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ashley, R. P.","contributorId":50513,"corporation":false,"usgs":true,"family":"Ashley","given":"R.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":424160,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Newport, G.R.","contributorId":30824,"corporation":false,"usgs":true,"family":"Newport","given":"G.R.","email":"","affiliations":[],"preferred":false,"id":424157,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Heinemeyer, G.R.","contributorId":6261,"corporation":false,"usgs":true,"family":"Heinemeyer","given":"G.R.","email":"","affiliations":[],"preferred":false,"id":424155,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70029796,"text":"70029796 - 2007 - Arc-parallel extension and fluid flow in an ancient accretionary wedge: The San Juan Islands, Washington","interactions":[],"lastModifiedDate":"2017-04-12T16:02:18","indexId":"70029796","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Arc-parallel extension and fluid flow in an ancient accretionary wedge: The San Juan Islands, Washington","docAbstract":"Structural analysis of the Lopez Structural Complex, a major Late Cretaceous terrane-bounding fault zone in the San Juan thrust system, reveals a sequence of events that provides insight into accretionary wedge mechanics and regional tectonics. After formation of regional ductile flattening and shear-related fabrics, the area was crosscut by brittle structures including: (1) southwest-vergent thrusts, (2) extension veins and normal faults related to northwest-southeast extension, and (3) conjugate strike-slip structures that record northwest-southeast extension and northeast-southwest shortening. Aragonite-bearing veins are associated with thrust and normal faults, but only rarely with strike-slip faults. High-pressure, low-temperature (HP-LT) minerals constrain the conditions for brittle deformation to ???20 km and <250 ??C. The presence of similar structures elsewhere indicates that the brittle structural sequence is typical of the San Juan nappes. Sustained HP-LT conditions are possible only if structures formed in an accretionary prism during active subduction, which suggests that these brittle structures record internal wedge deformation at depth and early during uplift of the San Juan nappes. The structures are consistent with orogen-normal shortening and vertical thickening followed by vertical thinning and along-strike extension. The kinematic evolution may be related initially to changes in wedge strength, followed by response to overthickening of the wedge in an unbuttressed, obliquely convergent setting. The change in vein mineralogy indicates that exhumation occurred prior to the strike-slip event. The pressure and temperature conditions and spatial and temporal extent of small faults associated with fluid flow suggest a link between these structures and the silent earthquake process. ?? 2007 Geological Society of America.","language":"English","publisher":"Geological Society of America","doi":"10.1130/B25985.1","issn":"00167606","usgsCitation":"Schermer, E.R., Gillaspy, J., and Lamb, R., 2007, Arc-parallel extension and fluid flow in an ancient accretionary wedge: The San Juan Islands, Washington: Geological Society of America Bulletin, v. 119, no. 5-6, p. 753-767, https://doi.org/10.1130/B25985.1.","productDescription":"15 p.","startPage":"753","endPage":"767","numberOfPages":"15","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":240206,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212681,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/B25985.1"}],"volume":"119","issue":"5-6","noUsgsAuthors":false,"publicationDate":"2007-05-08","publicationStatus":"PW","scienceBaseUri":"5059ed2ce4b0c8380cd49687","contributors":{"authors":[{"text":"Schermer, Elizabeth R.","contributorId":184060,"corporation":false,"usgs":false,"family":"Schermer","given":"Elizabeth","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":424379,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gillaspy, J.R.","contributorId":13441,"corporation":false,"usgs":true,"family":"Gillaspy","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":424377,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lamb, R.","contributorId":72206,"corporation":false,"usgs":true,"family":"Lamb","given":"R.","email":"","affiliations":[],"preferred":false,"id":424378,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70192571,"text":"70192571 - 2007 - Characterization of nutrient, organic carbon, and sediment loads and concentrations from the Mississippi River into the northern Gulf of Mexico","interactions":[],"lastModifiedDate":"2017-10-26T14:58:44","indexId":"70192571","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1584,"text":"Estuaries and Coasts","active":true,"publicationSubtype":{"id":10}},"title":"Characterization of nutrient, organic carbon, and sediment loads and concentrations from the Mississippi River into the northern Gulf of Mexico","docAbstract":"

We synthesize and update the science supporting the Action Plan for Reducing, Mitigating, and Controlling Hypoxia in the Northern Gulf of Mexico (Mississippi River/Gulf of Mexico Watershed Nutrient Task Force 2001) with a focus on the spatial and temporal discharge and patterns of nutrient and organic carbon delivery to the northern Gulf of Mexico, including data through 2006. The discharge of the Mississippi River watershed over 200 years varies but is not demonstrably increasing or decreasing. About 30% of the Mississippi River was shunted westward to form the Atchafalaya River, which redistributed water and nutrient loads on the shelf. Data on nitrogen concentrations from the early 1900s demonstrate that the seasonal and annual concentrations in the lower river have increased considerably since then, including a higher spring loading, following the increase in fertilizer applications after World WarII. The loading of total nitrogen (TN) fell from 1990 to 2006, but the loading of total phosphorus (TP) has risen slightly, resulting in a decline in the TN:TP ratios. The present TN:TP ratios hover around an average indicative of potential nitrogen limitation on phytoplankton growth, or balanced growth limitation, but not phosphorus limitation. The dissolved nitrogen:dissolved silicate ratios are near the Redfield ratio indicative of growth limitations on diatoms. Although nutrient concentrations are relatively high compared to those in many other large rivers, the water quality in the Mississippi River is not unique in that nutrient loads can be described by a variety of land-use models. There is no net removal of nitrogen from water flowing through the Atchafalaya basin, but the concentrations of TP and suspended sediments are lower at the exit point (Morgan City, Louisiana) than in the water entering the Atchafalaya basin. The removal of nutrients entering offshore waters through diversion of river water into wetlands is presently less than 1% of the total loadings going directly offshore, and would be less than 8% if the 10,093 km2 of coastal wetlands were successfully engineered for that purpose. Wetland loss is an insignificant contribution to the carbon loading offshore, compared to in situ marine production. The science-based conclusions in the Action Plan about nutrient loads and sources to the hypoxic zone off Louisiana are sustained by research and monitoring occurring in the subsequent 10 years.

","language":"English","publisher":"Springer","doi":"10.1007/BF02841333","usgsCitation":"Turner, R., Rabalais, N.N., Alexander, R.B., McIsaac, G., and Howarth, R.W., 2007, Characterization of nutrient, organic carbon, and sediment loads and concentrations from the Mississippi River into the northern Gulf of Mexico: Estuaries and Coasts, v. 30, no. 5, p. 773-790, https://doi.org/10.1007/BF02841333.","productDescription":"18 p.","startPage":"773","endPage":"790","ipdsId":"IP-003277","costCenters":[{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true}],"links":[{"id":347502,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Gulf of Mexico, Mississippi River","volume":"30","issue":"5","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5a07fcf2e4b09af898c8ce3a","contributors":{"authors":[{"text":"Turner, R.E.","contributorId":39749,"corporation":false,"usgs":false,"family":"Turner","given":"R.E.","email":"","affiliations":[{"id":16756,"text":"Louisiana State University, Baton Rouge, LA","active":true,"usgs":false}],"preferred":false,"id":716458,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rabalais, N. N.","contributorId":198497,"corporation":false,"usgs":false,"family":"Rabalais","given":"N.","email":"","middleInitial":"N.","affiliations":[{"id":12699,"text":"Louisiana Universities Marine Consortium","active":true,"usgs":false}],"preferred":false,"id":716459,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Alexander, Richard B. 0000-0001-9166-0626 ralex@usgs.gov","orcid":"https://orcid.org/0000-0001-9166-0626","contributorId":541,"corporation":false,"usgs":true,"family":"Alexander","given":"Richard","email":"ralex@usgs.gov","middleInitial":"B.","affiliations":[{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true},{"id":503,"text":"Office of Water Quality","active":true,"usgs":true}],"preferred":true,"id":716460,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McIsaac, G.","contributorId":198496,"corporation":false,"usgs":false,"family":"McIsaac","given":"G.","email":"","affiliations":[{"id":16984,"text":"University of Illinois at Urbana-Champaign","active":true,"usgs":false}],"preferred":false,"id":716461,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Howarth, R. W.","contributorId":48126,"corporation":false,"usgs":false,"family":"Howarth","given":"R.","email":"","middleInitial":"W.","affiliations":[{"id":12722,"text":"Cornell University","active":true,"usgs":false}],"preferred":false,"id":716462,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70142992,"text":"70142992 - 2007 - Strategies to predict metal mobility in surficial mining environments","interactions":[],"lastModifiedDate":"2015-03-18T14:19:55","indexId":"70142992","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3853,"text":"Reviews in Engineering Geology","active":true,"publicationSubtype":{"id":10}},"title":"Strategies to predict metal mobility in surficial mining environments","docAbstract":"

This report presents some strategies to predict metal mobility at mining sites. These strategies are based on chemical, physical, and geochemical information about metals and their interactions with the environment. An overview of conceptual models, metal sources, and relative mobility of metals under different geochemical conditions is presented, followed by a discussion of some important physical and chemical properties of metals that affect their mobility, bioavailability, and toxicity. The physical and chemical properties lead into a discussion of the importance of the chemical speciation of metals. Finally, environmental and geochemical processes and geochemical barriers that affect metal speciation are discussed. Some additional concepts and applications are briefly presented at the end of this report.

","language":"English","publisher":"Geological Society of America","publisherLocation":"Boulder, CO","doi":"10.1130/2007.4017(03)","usgsCitation":"Smith, K.S., 2007, Strategies to predict metal mobility in surficial mining environments: Reviews in Engineering Geology, v. 17, p. 25-45, https://doi.org/10.1130/2007.4017(03).","productDescription":"21 p.","startPage":"25","endPage":"45","numberOfPages":"21","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":298727,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"550aa1bfe4b02e76d7590c06","contributors":{"authors":[{"text":"Smith, Kathleen S. 0000-0001-8547-9804 ksmith@usgs.gov","orcid":"https://orcid.org/0000-0001-8547-9804","contributorId":182,"corporation":false,"usgs":true,"family":"Smith","given":"Kathleen","email":"ksmith@usgs.gov","middleInitial":"S.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":542398,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70030547,"text":"70030547 - 2007 - Status and habitat use of the California black rail in the Southwestern USA","interactions":[],"lastModifiedDate":"2020-09-10T17:15:36.92358","indexId":"70030547","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3750,"text":"Wetlands","onlineIssn":"1943-6246","printIssn":"0277-5212","active":true,"publicationSubtype":{"id":10}},"title":"Status and habitat use of the California black rail in the Southwestern USA","docAbstract":"

California black rails (Laterallus jamaicensis coturniculus) occur in two disjunct regions: the southwestern USA (western Arizona and southern California) and northern California (Sacramento Valley and the San Francisco Bay area). We examined current status of black rails in the southwestern USA by repeating survey efforts first conducted in 1973–1974 and again in 1989, and also examined wetland plant species associated with black rail distribution and abundance. We detected 136 black rails in Arizona and southern California. Black rail numbers detected during past survey efforts were much higher than the numbers detected during our more intensive survey effort, and hence, populations have obviously declined. Plants that were more common at points with black rails included common threesquare (Schoenoplectus pungens), arrowweed (Pluchea sericea), Fremont cottonwood (Populus fremontii), seepwillow (Baccharis salicifolia), and mixed shrubs, with common threesquare showing the strongest association with black rail presence. Plant species and non-vegetative communities that were less common at points with black rails included California bulrush (Schoenoplectus californicus), southern cattail (Typha domingensis), upland vegetation, and open water. Black rails were often present at sites that had some saltcedar (Tamarix ramosissima), but were rarely detected in areas dominated by saltcedar. We recommend that a standardized black rail survey effort be repeated annually to obtain estimates of black rail population trends. Management of existing emergent marshes with black rails is needed to maintain stands of common threesquare in early successional stages. Moreover, wetland restoration efforts that produce diverse wetland vegetation including common threesquare should be implemented to ensure that black rail populations persist in the southwestern USA.

","language":"English","publisher":"Springer","doi":"10.1672/0277-5212(2007)27[987:SAHUOT]2.0.CO;2","usgsCitation":"Conway, C., and Sulzman, C., 2007, Status and habitat use of the California black rail in the Southwestern USA: Wetlands, v. 27, no. 4, p. 987-998, https://doi.org/10.1672/0277-5212(2007)27[987:SAHUOT]2.0.CO;2.","productDescription":"12 p.","startPage":"987","endPage":"998","numberOfPages":"12","costCenters":[],"links":[{"id":239072,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, California","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -114.81262207031249,\n 32.72721987021932\n ],\n [\n -114.3182373046875,\n 32.72721987021932\n ],\n [\n -114.3182373046875,\n 33.15594830078649\n ],\n [\n -114.81262207031249,\n 33.15594830078649\n ],\n [\n -114.81262207031249,\n 32.72721987021932\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"27","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9789e4b08c986b31bb02","contributors":{"authors":[{"text":"Conway, C.J.","contributorId":33417,"corporation":false,"usgs":true,"family":"Conway","given":"C.J.","email":"","affiliations":[],"preferred":false,"id":427599,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sulzman, C.","contributorId":101079,"corporation":false,"usgs":true,"family":"Sulzman","given":"C.","affiliations":[],"preferred":false,"id":427600,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70030763,"text":"70030763 - 2007 - Modeling the movement of a pH perturbation and its impact on adsorbed zinc and phosphate in a wastewater‐contaminated aquifer","interactions":[],"lastModifiedDate":"2023-08-02T11:07:21.55908","indexId":"70030763","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Modeling the movement of a pH perturbation and its impact on adsorbed zinc and phosphate in a wastewater‐contaminated aquifer","docAbstract":"

[1] Chemical conditions were perturbed in an aquifer with an ambient pH of 5.9 and wastewater-derived adsorbed zinc (Zn) and phosphate (P) contamination by injecting a pulse of amended groundwater. The injected groundwater had low concentrations of dissolved Zn and P, a pH value of 4.5 resulting from equilibration with carbon dioxide gas, and added potassium bromide (KBr). Downgradient of the injection, breakthrough of nonreactive Br and total dissolved carbonate concentrations in excess of ambient values (excess TCO2) were accompanied by a decrease in pH values and over twentyfold increases in dissolved Zn concentrations above preinjection values. Peak concentrations of Br and excess TCO2 were followed by slow increases in pH values accompanied by significant increases in dissolved P above preinjection concentrations. The injected tracers mobilized a significant mass of wastewater-derived Zn. Reactive transport simulations incorporating surface complexation models for adsorption of Zn, P, hydrogen ions, and major cations onto the aquifer sediments, calibrated using laboratory experimental data, captured most of the important trends observed during the experiment. These include increases in Zn concentrations in response to the pH perturbation, perturbations in major cation concentrations, attenuation of the pH perturbation with transport distance, and increases in alkalinity with transport distance. Observed desorption of P in response to chemical perturbations was not predicted, possibly because of a disparity between the range of chemical conditions in the calibration data set and those encountered during the field experiment. Zinc and P desorbed rapidly in response to changing chemical conditions despite decades of contact with the sediments. Surface complexation models with relatively few parameters in the form of logK values and site concentrations show considerable promise for describing the influence of variable chemistry on the transport of adsorbing contaminants.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2005WR004841","usgsCitation":"Kent, D.B., Wilkie, J., and Davis, J., 2007, Modeling the movement of a pH perturbation and its impact on adsorbed zinc and phosphate in a wastewater‐contaminated aquifer: Water Resources Research, v. 43, no. 7, W07440; 17 p., https://doi.org/10.1029/2005WR004841.","productDescription":"W07440; 17 p.","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":477072,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2005wr004841","text":"Publisher Index Page"},{"id":238662,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"7","noUsgsAuthors":false,"publicationDate":"2007-07-24","publicationStatus":"PW","scienceBaseUri":"505a5c4ae4b0c8380cd6fb89","contributors":{"authors":[{"text":"Kent, Douglas B. 0000-0003-3758-8322 dbkent@usgs.gov","orcid":"https://orcid.org/0000-0003-3758-8322","contributorId":1871,"corporation":false,"usgs":true,"family":"Kent","given":"Douglas","email":"dbkent@usgs.gov","middleInitial":"B.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":428555,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wilkie, J.A.","contributorId":82880,"corporation":false,"usgs":true,"family":"Wilkie","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":428557,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Davis, J.A.","contributorId":71694,"corporation":false,"usgs":true,"family":"Davis","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":428556,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70030761,"text":"70030761 - 2007 - Body size mediated coexistence of consumers competing for resources in space","interactions":[],"lastModifiedDate":"2012-03-12T17:21:19","indexId":"70030761","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2939,"text":"Oikos","active":true,"publicationSubtype":{"id":10}},"title":"Body size mediated coexistence of consumers competing for resources in space","docAbstract":"Body size is a major phenotypic trait of individuals that commonly differentiates co-occurring species. We analyzed inter-specific competitive interactions between a large consumer and smaller competitors, whose energetics, selection and giving-up behaviour on identical resource patches scaled with individual body size. The aim was to investigate whether pure metabolic constraints on patch behaviour of vagile species can determine coexistence conditions consistent with existing theoretical and experimental evidence. We used an individual-based spatially explicit simulation model at a spatial scale defined by the home range of the large consumer, which was assumed to be parthenogenic and semelparous. Under exploitative conditions, competitive coexistence occurred in a range of body size ratios between 2 and 10. Asymmetrical competition and the mechanism underlying asymmetry, determined by the scaling of energetics and patch behaviour with consumer body size, were the proximate determinant of inter-specific coexistence. The small consumer exploited patches more efficiently, but searched for profitable patches less effectively than the larger competitor. Therefore, body-size related constraints induced niche partitioning, allowing competitive coexistence within a set of conditions where the large consumer maintained control over the small consumer and resource dynamics. The model summarises and extends the existing evidence of species coexistence on a limiting resource, and provides a mechanistic explanation for decoding the size-abundance distribution patterns commonly observed at guild and community levels. ?? Oikos.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Oikos","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.2007.0030-1299.15702.x","issn":"00301299","usgsCitation":"Basset, A., and Angelis, D., 2007, Body size mediated coexistence of consumers competing for resources in space: Oikos, v. 116, no. 8, p. 1363-1377, https://doi.org/10.1111/j.2007.0030-1299.15702.x.","startPage":"1363","endPage":"1377","numberOfPages":"15","costCenters":[],"links":[{"id":211380,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.2007.0030-1299.15702.x"},{"id":238660,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"116","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f1f7e4b0c8380cd4af1b","contributors":{"authors":[{"text":"Basset, A.","contributorId":39552,"corporation":false,"usgs":true,"family":"Basset","given":"A.","email":"","affiliations":[],"preferred":false,"id":428551,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Angelis, D.L.","contributorId":105525,"corporation":false,"usgs":true,"family":"Angelis","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":428552,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70030729,"text":"70030729 - 2007 - Simulated responses of soil organic carbon stock to tillage management scenarios in the Northwest Great Plains","interactions":[],"lastModifiedDate":"2022-05-18T15:23:24.246926","indexId":"70030729","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1183,"text":"Carbon Balance and Management","active":true,"publicationSubtype":{"id":10}},"title":"Simulated responses of soil organic carbon stock to tillage management scenarios in the Northwest Great Plains","docAbstract":"

Background

Tillage practices greatly affect carbon (C) stocks in agricultural soils. Quantification of the impacts of tillage on C stocks at a regional scale has been challenging because of the spatial heterogeneity of soil, climate, and management conditions. We evaluated the effects of tillage management on the dynamics of soil organic carbon (SOC) in croplands of the Northwest Great Plains ecoregion of the United States using the General Ensemble biogeochemical Modeling System (GEMS). Tillage management scenarios included actual tillage management (ATM), conventional tillage (CT), and no-till (NT).

Results

Model simulations show that the average amount of C (kg C ha-1yr-1) released from croplands between 1972 and 2000 was 246 with ATM, 261 with CT, and 210 with NT. The reduction in the rate of C emissions with conversion of CT to NT at the ecoregion scale is much smaller than those reported at plot scale and simulated for other regions. Results indicate that the response of SOC to tillage practices depends significantly on baseline SOC levels: the conversion of CT to NT had less influence on SOC stocks in soils having lower baseline SOC levels but would lead to higher potentials to mitigate C release from soils having higher baseline SOC levels.

Conclusion

For assessing the potential of agricultural soils to mitigate C emissions with conservation tillage practices, it is critical to consider both the crop rotations being used at a local scale and the composition of all cropping systems at a regional scale.

","language":"English","publisher":"BMC","doi":"10.1186/1750-0680-2-7","usgsCitation":"Tan, Z., Liu, S., Li, Z., and Loveland, T., 2007, Simulated responses of soil organic carbon stock to tillage management scenarios in the Northwest Great Plains: Carbon Balance and Management, v. 2, no. 1, 7, 10 p., https://doi.org/10.1186/1750-0680-2-7.","productDescription":"7, 10 p.","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":477210,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1186/1750-0680-2-7","text":"Publisher Index Page"},{"id":239154,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Montana, North Dakota, South Dakota, Wyoming","otherGeospatial":"Great Plains","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -109.3359375,\n 43.13306116240612\n ],\n [\n -99.140625,\n 43.13306116240612\n ],\n [\n -99.140625,\n 48.69096039092549\n ],\n [\n -109.3359375,\n 48.69096039092549\n ],\n [\n -109.3359375,\n 43.13306116240612\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"2","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-07-24","publicationStatus":"PW","scienceBaseUri":"505b8fbde4b08c986b3190ed","contributors":{"authors":[{"text":"Tan, Z.","contributorId":60831,"corporation":false,"usgs":true,"family":"Tan","given":"Z.","email":"","affiliations":[],"preferred":false,"id":428417,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Liu, S.","contributorId":93170,"corporation":false,"usgs":true,"family":"Liu","given":"S.","affiliations":[],"preferred":false,"id":428418,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Li, Z.","contributorId":29160,"corporation":false,"usgs":true,"family":"Li","given":"Z.","affiliations":[],"preferred":false,"id":428416,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Loveland, Thomas R. 0000-0003-3114-6646","orcid":"https://orcid.org/0000-0003-3114-6646","contributorId":106125,"corporation":false,"usgs":true,"family":"Loveland","given":"Thomas R.","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"preferred":false,"id":428419,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70196853,"text":"70196853 - 2007 - The effects of acidic mine drainage from historical mines in the Animas River watershed, San Juan County, Colorado—What is being done and what can be done to improve water quality?","interactions":[],"lastModifiedDate":"2021-05-06T14:54:55.549372","indexId":"70196853","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"The effects of acidic mine drainage from historical mines in the Animas River watershed, San Juan County, Colorado—What is being done and what can be done to improve water quality?","docAbstract":"

Historical production of metals in the western United States has left a legacy of acidic drainage and toxic metals in many mountain watersheds that are a potential threat to human and ecosystem health. Studies of the effects of historical mining on surface water chemistry and riparian habitat in the Animas River watershed have shown that cost-effective remediation of mine sites must be carefully planned. of the more than 5400 mine, mill, and prospect sites in the watershed, ∼80 sites account for more than 90% of the metal loads to the surface drainages. Much of the low pH water and some of the metal loads are the result of weathering of hydrothermally altered rock that has not been disturbed by historical mining. Some stream reaches in areas underlain by hydrothermally altered rock contained no aquatic life prior to mining.

Scientific studies of the processes and metal-release pathways are necessary to develop effective remediation strategies, particularly in watersheds where there is little land available to build mine-waste repositories. Characterization of mine waste, development of runoff profiles, and evaluation of ground-water pathways all require rigorous study and are expensive upfront costs that land managers find difficult to justify. Tracer studies of water quality provide a detailed spatial analysis of processes affecting surface- and ground-water chemistry. Reactive transport models were used in conjunction with the best state-of-the-art engineering solutions to make informed and cost-effective remediation decisions.

Remediation of 23% of the high-priority sites identified in the watershed has resulted in steady improvement in water quality. More than $12 million, most contributed by private entities, has been spent on remediation in the Animas River watershed. The recovery curve for aquatic life in the Animas River system will require further documentation and long-term monitoring to evaluate the effectiveness of remediation projects implemented.

","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Understanding and responding to hazardous substances at mine sites in the western United States","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Geological Society of America","doi":"10.1130/2007.4017(04)","usgsCitation":"Church, S.E., Owen, R.J., Von Guerard, P., Verplanck, P.L., Kimball, B.A., and Yager, D.B., 2007, The effects of acidic mine drainage from historical mines in the Animas River watershed, San Juan County, Colorado—What is being done and what can be done to improve water quality?, chap. of Understanding and responding to hazardous substances at mine sites in the western United States, p. 47-83, https://doi.org/10.1130/2007.4017(04).","productDescription":"37 p.","startPage":"47","endPage":"83","costCenters":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true},{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":353969,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado, Montana","county":"Jefferson County, San Juan County","otherGeospatial":"Animas River watershed, Boulder River watershed","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -112.4066162109375,\n 46.2\n ],\n [\n -111.79412841796875,\n 46.2\n ],\n [\n -111.79412841796875,\n 46.5720787149159\n ],\n [\n -112.4066162109375,\n 46.5720787149159\n ],\n [\n -112.4066162109375,\n 46.2\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -107.875,\n 37.7\n ],\n [\n -107.5,\n 37.7\n ],\n [\n -107.5,\n 38\n ],\n [\n -107.875,\n 38\n ],\n [\n -107.875,\n 37.7\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5afeff77e4b0da30c1bfcb82","contributors":{"authors":[{"text":"Church, Stanley E. schurch@usgs.gov","contributorId":199165,"corporation":false,"usgs":true,"family":"Church","given":"Stanley","email":"schurch@usgs.gov","middleInitial":"E.","affiliations":[],"preferred":true,"id":734732,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Owen, Robert J.","contributorId":204694,"corporation":false,"usgs":false,"family":"Owen","given":"Robert","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":734733,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Von Guerard, Paul","contributorId":40620,"corporation":false,"usgs":true,"family":"Von Guerard","given":"Paul","affiliations":[],"preferred":false,"id":734734,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Verplanck, Philip L. 0000-0002-3653-6419 plv@usgs.gov","orcid":"https://orcid.org/0000-0002-3653-6419","contributorId":728,"corporation":false,"usgs":true,"family":"Verplanck","given":"Philip","email":"plv@usgs.gov","middleInitial":"L.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":734735,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kimball, Briant A. bkimball@usgs.gov","contributorId":533,"corporation":false,"usgs":true,"family":"Kimball","given":"Briant","email":"bkimball@usgs.gov","middleInitial":"A.","affiliations":[{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true}],"preferred":true,"id":734736,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Yager, Douglas B. 0000-0001-5074-4022 dyager@usgs.gov","orcid":"https://orcid.org/0000-0001-5074-4022","contributorId":798,"corporation":false,"usgs":true,"family":"Yager","given":"Douglas","email":"dyager@usgs.gov","middleInitial":"B.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":734737,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70030728,"text":"70030728 - 2007 - Population structure of Cladophora-borne Escherichia coli in nearshore water of Lake Michigan","interactions":[],"lastModifiedDate":"2016-04-29T09:46:28","indexId":"70030728","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3716,"text":"Water Research","onlineIssn":"1879-2448","printIssn":"0043-1354","active":true,"publicationSubtype":{"id":10}},"title":"Population structure of Cladophora-borne Escherichia coli in nearshore water of Lake Michigan","docAbstract":"

We previously reported that the macrophytic green alga Cladophora harbors high densities (up to 106 colony-forming units/g dry weight) of the fecal indicator bacteria,Escherichia coli and enterococci, in shoreline waters of Lake Michigan. However, the population structure and genetic relatedness of Cladophora-borne indicator bacteria remain poorly understood. In this study, 835 E. coli isolates were collected fromCladophora tufts (mats) growing on rocks from a breakwater located within the Indiana Dunes National Lakeshore in northwest Indiana. The horizontal fluorophore enhanced rep-PCR (HFERP) DNA fingerprinting technique was used to determine the genetic relatedness of the isolates to each other and to those in a library of E. coli DNA fingerprints. While the E. coli isolates from Cladophora showed a high degree of genetic relatedness (⩾92% similarity), in most cases, however, the isolates were genetically distinct. The Shannon diversity index for the population was very high (5.39). Both spatial and temporal influences contributed to the genetic diversity. There was a strong association of isolate genotypes by location (79% and 80% for lake- and ditch-side samplings, respectively), and isolates collected from 2002 were distinctly different from those obtained in 2003. Cladophora-borne E. coli isolates represented a unique group, which was distinct from other E. coli isolates in the DNA fingerprint library tested. Taken together, these results indicate that E. coli strains associated with Cladophora may be a recurring source of indicator bacteria to the nearshore beach.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.watres.2007.03.009","issn":"00431354","usgsCitation":"Byappanahalli, M., Whitman, R., Shively, D., Ferguson, J., Ishii, S., and Sadowsky, M., 2007, Population structure of Cladophora-borne Escherichia coli in nearshore water of Lake Michigan: Water Research, v. 41, no. 16, p. 3649-3654, https://doi.org/10.1016/j.watres.2007.03.009.","productDescription":"6 p.","startPage":"3649","endPage":"3654","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":211797,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.watres.2007.03.009"},{"id":239153,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"41","issue":"16","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7d9ce4b0c8380cd7a062","contributors":{"authors":[{"text":"Byappanahalli, M.N.","contributorId":11384,"corporation":false,"usgs":true,"family":"Byappanahalli","given":"M.N.","email":"","affiliations":[],"preferred":false,"id":428410,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Whitman, R.L.","contributorId":69750,"corporation":false,"usgs":true,"family":"Whitman","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":428414,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Shively, D.A.","contributorId":78123,"corporation":false,"usgs":true,"family":"Shively","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":428415,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ferguson, J.","contributorId":31907,"corporation":false,"usgs":true,"family":"Ferguson","given":"J.","email":"","affiliations":[],"preferred":false,"id":428412,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ishii, S.","contributorId":59613,"corporation":false,"usgs":true,"family":"Ishii","given":"S.","email":"","affiliations":[],"preferred":false,"id":428413,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Sadowsky, M.J.","contributorId":19337,"corporation":false,"usgs":true,"family":"Sadowsky","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":428411,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":1016479,"text":"1016479 - 2007 - Biotic soil crusts in relation to topography, cheatgrass, and fire in the Columbia Basin, Washington","interactions":[],"lastModifiedDate":"2021-05-20T12:25:31.187755","indexId":"1016479","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1087,"text":"Bryologist","active":true,"publicationSubtype":{"id":10}},"title":"Biotic soil crusts in relation to topography, cheatgrass, and fire in the Columbia Basin, Washington","docAbstract":"

We studied lichen and bryophyte soil crust communities in a large public grazing allotment within a sagebrush steppe ecosystem in which the biotic soil crusts are largely intact. The allotment had been rested from grazing for 12 years, but experienced an extensive series of wildfires. In the 350, 4 x 0.5 m plots, stratified by topographic position, we found 60 species or species groups that can be distinguished in the field with a hand lens, averaging 11.5 species groups per plot. Lichen and bryophyte soil crust communities differed among topographic positions. Draws were the most disturbed, apparently from water erosion in a narrow channel and mass wasting from the steepened sides. Presumably because of this disturbance, draws had the lowest average species richness of all the topographic strata we examined. Biotic crust species richness and cover were inversely related to cover of the invasive annual, cheatgrass (Bromus tectorum), and positively related to cover of native bunchgrasses. Integrity of the biotic crust was more strongly related to cheatgrass than to fire. In general, we observed good recovery of crusts following fire, but only in those areas dominated by perennial bunchgrasses. We interpret the resilience of the biotic crust, in this case, to the low abundance of cheatgrass, low amounts of soil disturbance and high moss cover. These fires have not resulted in an explosion of the cheatgrass population, perhaps because of the historically low levels of livestock grazing.

","language":"English","publisher":"BioOne","doi":"10.1639/0007-2745(2007)110[706:BSCIRT]2.0.CO;2","usgsCitation":"Ponzetti, J., McCune, B., and Pyke, D.A., 2007, Biotic soil crusts in relation to topography, cheatgrass, and fire in the Columbia Basin, Washington: Bryologist, v. 110, no. 4, p. 706-722, https://doi.org/10.1639/0007-2745(2007)110[706:BSCIRT]2.0.CO;2.","productDescription":"18 p.","startPage":"706","endPage":"722","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":134554,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","otherGeospatial":"Columbia Basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -120.65185546875,\n 45.84410779560204\n ],\n [\n -117.53173828125,\n 45.84410779560204\n ],\n [\n -117.53173828125,\n 48.4146186174932\n ],\n [\n -120.65185546875,\n 48.4146186174932\n ],\n [\n -120.65185546875,\n 45.84410779560204\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"110","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a30e4b07f02db616d6b","contributors":{"authors":[{"text":"Ponzetti, Jeanne","contributorId":42938,"corporation":false,"usgs":true,"family":"Ponzetti","given":"Jeanne","affiliations":[],"preferred":false,"id":324288,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McCune, B.","contributorId":22736,"corporation":false,"usgs":true,"family":"McCune","given":"B.","email":"","affiliations":[],"preferred":false,"id":324287,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pyke, David A. 0000-0002-4578-8335 david_a_pyke@usgs.gov","orcid":"https://orcid.org/0000-0002-4578-8335","contributorId":3118,"corporation":false,"usgs":true,"family":"Pyke","given":"David","email":"david_a_pyke@usgs.gov","middleInitial":"A.","affiliations":[{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true},{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"preferred":true,"id":324286,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70030111,"text":"70030111 - 2007 - Structure of the California Coast Ranges and San Andreas Fault at SAFOD from seismic waveform inversion and reflection imaging","interactions":[],"lastModifiedDate":"2023-08-04T11:15:47.64567","indexId":"70030111","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Structure of the California Coast Ranges and San Andreas Fault at SAFOD from seismic waveform inversion and reflection imaging","docAbstract":"

[1] A seismic reflection and refraction survey across the San Andreas Fault (SAF) near Parkfield provides a detailed characterization of crustal structure across the location of the San Andreas Fault Observatory at Depth (SAFOD). Steep-dip prestack migration and frequency domain acoustic waveform tomography were applied to obtain highly resolved images of the upper 5 km of the crust for 15 km on either side of the SAF. The resulting velocity model constrains the top of the Salinian granite with great detail. Steep-dip reflection seismic images show several strong-amplitude vertical reflectors in the uppermost crust near SAFOD that define an ∼2-km-wide zone comprising the main SAF and two or more local faults. Another prominent subvertical reflector at 2–4 km depth ∼9 km to the northeast of the SAF marks the boundary between the Franciscan terrane and the Great Valley Sequence. A deep seismic section of low resolution shows several reflectors in the Salinian crust west of the SAF. Two horizontal reflectors around 10 km depth correlate with strains of seismicity observed along-strike of the SAF. They represent midcrustal shear zones partially decoupling the ductile lower crust from the brittle upper crust. The deepest reflections from ∼25 km depth are interpreted as crust-mantle boundary.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006JB004611","issn":"01480227","usgsCitation":"Bleibinhaus, F., Hole, J., Ryberg, T., and Fuis, G., 2007, Structure of the California Coast Ranges and San Andreas Fault at SAFOD from seismic waveform inversion and reflection imaging: Journal of Geophysical Research B: Solid Earth, v. 112, no. 6, 15 p., https://doi.org/10.1029/2006JB004611.","productDescription":"15 p.","costCenters":[],"links":[{"id":477056,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006jb004611","text":"Publisher Index Page"},{"id":240437,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"112","issue":"6","noUsgsAuthors":false,"publicationDate":"2007-06-28","publicationStatus":"PW","scienceBaseUri":"505b9c5be4b08c986b31d3c2","contributors":{"authors":[{"text":"Bleibinhaus, F.","contributorId":77736,"corporation":false,"usgs":true,"family":"Bleibinhaus","given":"F.","email":"","affiliations":[],"preferred":false,"id":425748,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hole, J.A.","contributorId":103422,"corporation":false,"usgs":true,"family":"Hole","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":425751,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ryberg, T.","contributorId":91643,"corporation":false,"usgs":true,"family":"Ryberg","given":"T.","email":"","affiliations":[],"preferred":false,"id":425750,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fuis, G. S.","contributorId":83131,"corporation":false,"usgs":true,"family":"Fuis","given":"G. S.","affiliations":[],"preferred":false,"id":425749,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70030110,"text":"70030110 - 2007 - Suspended sediment transport in an ephemeral stream following wildfire","interactions":[],"lastModifiedDate":"2023-08-03T11:40:18.33254","indexId":"70030110","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2318,"text":"Journal of Geophysical Research F: Earth Surface","active":true,"publicationSubtype":{"id":10}},"title":"Suspended sediment transport in an ephemeral stream following wildfire","docAbstract":"

We examine the impacts of a stand-clearing wildfire on the characteristics and magnitude of suspended sediment transport in ephemeral streams draining the burn area. We report the results of a monitoring program that includes 2 years of data prior to the Cerro Grande fire in New Mexico, and 3 years of postfire data. Suspended sediment concentration (SSC) increased by about 2 orders of magnitude following the fire, and the proportion of silt and clay increased from 50% to 80%. For a given flow event, SSC is highest at the flood bore and decreases monotonically with time, a pattern evident in every flood sampled both before and after the fire. We propose that the accumulation of flow and wash load at the flow front is an inherent characteristic of ephemeral stream flows, due to amplified momentum losses at the flood bore. We present a new model for computing suspended sediment transport in ephemeral streams (in the presence or absence of wildfire) by relating SSC to the time following the arrival of the flood bore, rather than to instantaneous discharge. Using this model and a rainfall history, we estimate that in the 3 years following the fire, floods transported in suspension a mass equivalent to about 3 mm of landscape lowering across the burn area, 20% of this following a single rainstorm. We test the model by computing fine sediment delivery to a small reservoir in an adjacent watershed, where we have a detailed record of postfire sedimentation based on repeat surveys. Systematic discrepancies between modeled and measured sedimentation rates in the reservoir suggest rapid reductions in suspended sediment delivery in the first several years after the fire.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2005JF000459","issn":"01480227","usgsCitation":"Malmon, D., Reneau, S.L., Katzman, D., Lavine, A., and Lyman, J., 2007, Suspended sediment transport in an ephemeral stream following wildfire: Journal of Geophysical Research F: Earth Surface, v. 112, no. 2, 16 p., https://doi.org/10.1029/2005JF000459.","productDescription":"16 p.","costCenters":[],"links":[{"id":240405,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"112","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-04-18","publicationStatus":"PW","scienceBaseUri":"505ba306e4b08c986b31fb22","contributors":{"authors":[{"text":"Malmon, D.V.","contributorId":22960,"corporation":false,"usgs":true,"family":"Malmon","given":"D.V.","affiliations":[],"preferred":false,"id":425744,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reneau, Steven L.","contributorId":99639,"corporation":false,"usgs":false,"family":"Reneau","given":"Steven","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":425746,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Katzman, D.","contributorId":34660,"corporation":false,"usgs":true,"family":"Katzman","given":"D.","email":"","affiliations":[],"preferred":false,"id":425745,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lavine, A.","contributorId":103876,"corporation":false,"usgs":true,"family":"Lavine","given":"A.","email":"","affiliations":[],"preferred":false,"id":425747,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lyman, J.","contributorId":22153,"corporation":false,"usgs":true,"family":"Lyman","given":"J.","email":"","affiliations":[],"preferred":false,"id":425743,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70030109,"text":"70030109 - 2007 - Environmental and ecological conditions surrounding the production of large year classes of walleye (Sander vitreus) in Saginaw Bay, Lake Huron","interactions":[],"lastModifiedDate":"2016-05-02T08:42:27","indexId":"70030109","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2330,"text":"Journal of Great Lakes Research","active":true,"publicationSubtype":{"id":10}},"title":"Environmental and ecological conditions surrounding the production of large year classes of walleye (Sander vitreus) in Saginaw Bay, Lake Huron","docAbstract":"

The Saginaw Bay walleye population (Sander vitreus) has not fully recovered from a collapse that began in the 1940s and has been dependent on stocking with only limited natural reproduction. Beginning in 2003, and through at least 2005, reproductive success of walleye surged to unprecedented levels. The increase was concurrent with ecological changes in Lake Huron and we sought to quantitatively model which factors most influenced this new dynamic. We developed Ricker stock-recruitment models for both wild and stock fish and evaluated them with second-order Akaike's information criterion to find the best model. Independent variables included adult alewife (Alosa pseudoharengus) abundance, spring water temperatures, chlorophyll a levels and total phosphorus levels. In all, 14 models were evaluated for production of wild age-0 walleyes and eight models for stocked age-0 walleyes. For wild walleyes, adult alewife abundance was the dominant factor, accounting for 58% of the variability in age-0 abundance. Production of wild age-0 fish increased when adult alewives were scarce. The only other plausible factor was spring water temperature. Predictably, alewife abundance was not important to stocked fish; instead temperature and adult walleye abundance were more significant variables. The surge in reproductive success for walleyes during 2003–2005 was most likely due to large declines in adult alewives in Lake Huron. While relatively strong year classes (age-1 and up) have been produced as a result of increased age-0 production during 2003–2005, the overall magnitude has not been as great as the initial age-0 abundance originally suggested. It appears that over-winter mortality is higher than in the past and may stem from higher predation or slower growth (lower condition for enduring winter thermal stress). From this it appears that low alewife abundance does not assure strong walleye year classes in Saginaw Bay but may be a prerequisite for them.

","language":"English","publisher":"International Association for Great Lakes Research","doi":"10.3394/0380-1330(2007)33[118:EAECST]2.0.CO;2","issn":"03801330","usgsCitation":"Fielder, D., Schaeffer, J., and Thomas, M., 2007, Environmental and ecological conditions surrounding the production of large year classes of walleye (Sander vitreus) in Saginaw Bay, Lake Huron: Journal of Great Lakes Research, v. 33, no. Supplement 1, p. 118-132, https://doi.org/10.3394/0380-1330(2007)33[118:EAECST]2.0.CO;2.","productDescription":"15 p.","startPage":"118","endPage":"132","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":240404,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212850,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3394/0380-1330(2007)33[118:EAECST]2.0.CO;2"}],"volume":"33","issue":"Supplement 1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a099be4b0c8380cd51fb4","contributors":{"authors":[{"text":"Fielder, D.G.","contributorId":22152,"corporation":false,"usgs":true,"family":"Fielder","given":"D.G.","email":"","affiliations":[],"preferred":false,"id":425740,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schaeffer, J.S.","contributorId":42688,"corporation":false,"usgs":true,"family":"Schaeffer","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":425741,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Thomas, M.V.","contributorId":66908,"corporation":false,"usgs":true,"family":"Thomas","given":"M.V.","email":"","affiliations":[],"preferred":false,"id":425742,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70030108,"text":"70030108 - 2007 - Eogenetic karst hydrology: Insights from the 2004 hurricanes, peninsular Florida","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70030108","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"Eogenetic karst hydrology: Insights from the 2004 hurricanes, peninsular Florida","docAbstract":"Eogenetic karst lies geographically and temporally close to the depositional environment of limestone in warm marine water at low latitude, in areas marked by midafternoon thunderstorms during a summer rainy season. Spring hydrographs from such an environment in north-central Florida are characterized by smooth, months-long, seasonal maxima. The passage of Hurricanes Frances and Jeanne in September 2004 over three field locations shows how the eogenetic karst of the Upper Floridan Aquifer responds to unequivocal recharge events. Hydrographs at wells in the High Springs area, Rainbow Springs, and at Morris, Briar, and Bat Caves all responded promptly with a similar drawn-out rise to a maximum that extended long into the winter dry season. The timing indicates that the typical hydrograph of eogenetic karst is not the short-term fluctuations of springs in epigenic, telogenetic karst, or the smoothed response to all the summer thunderstorms, but rather the protracted response of the system to rainfall that exceeds a threshold. The similarity of cave and noncave hydrographs indicates distributed autogenic recharge and a free communication between secondary porosity and permeable matrix - both of which differ from the hydrology of epigenic, telogenetic karst. At Briar Cave, drip rates lagged behind the water table rise, suggesting that recharge was delivered by fractures, which control the cave's morphology. At High Springs, hydrographs at the Santa Fe River and a submerged conduit apparently connected to it show sharp maxima after the storms, unlike the other cave hydrographs. Our interpretation is that the caves, in general, are discontinuous. ?? 2007 National Ground Water Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1745-6584.2007.00309.x","issn":"0017467X","usgsCitation":"Florea, L., and Vacher, H.L., 2007, Eogenetic karst hydrology: Insights from the 2004 hurricanes, peninsular Florida: Ground Water, v. 45, no. 4, p. 439-446, https://doi.org/10.1111/j.1745-6584.2007.00309.x.","startPage":"439","endPage":"446","numberOfPages":"8","costCenters":[],"links":[{"id":212822,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2007.00309.x"},{"id":240369,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-03-23","publicationStatus":"PW","scienceBaseUri":"505a09fee4b0c8380cd52144","contributors":{"authors":[{"text":"Florea, L.J.","contributorId":22968,"corporation":false,"usgs":true,"family":"Florea","given":"L.J.","email":"","affiliations":[],"preferred":false,"id":425738,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vacher, H. Leonard","contributorId":90529,"corporation":false,"usgs":false,"family":"Vacher","given":"H.","email":"","middleInitial":"Leonard","affiliations":[],"preferred":false,"id":425739,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}