{"pageNumber":"885","pageRowStart":"22100","pageSize":"25","recordCount":46734,"records":[{"id":70030209,"text":"70030209 - 2007 - Statistical analysis of water-quality data containing multiple detection limits II: S-language software for nonparametric distribution modeling and hypothesis testing","interactions":[],"lastModifiedDate":"2012-03-12T17:21:01","indexId":"70030209","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1315,"text":"Computers & Geosciences","printIssn":"0098-3004","active":true,"publicationSubtype":{"id":10}},"title":"Statistical analysis of water-quality data containing multiple detection limits II: S-language software for nonparametric distribution modeling and hypothesis testing","docAbstract":"Analysis of low concentrations of trace contaminants in environmental media often results in left-censored data that are below some limit of analytical precision. Interpretation of values becomes complicated when there are multiple detection limits in the data-perhaps as a result of changing analytical precision over time. Parametric and semi-parametric methods, such as maximum likelihood estimation and robust regression on order statistics, can be employed to model distributions of multiply censored data and provide estimates of summary statistics. However, these methods are based on assumptions about the underlying distribution of data. Nonparametric methods provide an alternative that does not require such assumptions. A standard nonparametric method for estimating summary statistics of multiply-censored data is the Kaplan-Meier (K-M) method. This method has seen widespread usage in the medical sciences within a general framework termed \"survival analysis\" where it is employed with right-censored time-to-failure data. However, K-M methods are equally valid for the left-censored data common in the geosciences. Our S-language software provides an analytical framework based on K-M methods that is tailored to the needs of the earth and environmental sciences community. This includes routines for the generation of empirical cumulative distribution functions, prediction or exceedance probabilities, and related confidence limits computation. Additionally, our software contains K-M-based routines for nonparametric hypothesis testing among an unlimited number of grouping variables. A primary characteristic of K-M methods is that they do not perform extrapolation and interpolation. Thus, these routines cannot be used to model statistics beyond the observed data range or when linear interpolation is desired. For such applications, the aforementioned parametric and semi-parametric methods must be used.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Computers and Geosciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.cageo.2006.09.006","issn":"00983004","usgsCitation":"Lee, L., and Helsel, D., 2007, Statistical analysis of water-quality data containing multiple detection limits II: S-language software for nonparametric distribution modeling and hypothesis testing: Computers & Geosciences, v. 33, no. 5, p. 696-704, https://doi.org/10.1016/j.cageo.2006.09.006.","startPage":"696","endPage":"704","numberOfPages":"9","costCenters":[],"links":[{"id":211885,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.cageo.2006.09.006"},{"id":239259,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9716e4b08c986b31b891","contributors":{"authors":[{"text":"Lee, L.","contributorId":77730,"corporation":false,"usgs":true,"family":"Lee","given":"L.","email":"","affiliations":[],"preferred":false,"id":426135,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Helsel, D.","contributorId":94492,"corporation":false,"usgs":true,"family":"Helsel","given":"D.","email":"","affiliations":[],"preferred":false,"id":426136,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70030755,"text":"70030755 - 2007 - Distribution of breeding shorebirds on the Arctic Coastal Plain of Alaska","interactions":[],"lastModifiedDate":"2023-08-14T11:17:59.976899","indexId":"70030755","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":894,"text":"Arctic","active":true,"publicationSubtype":{"id":10}},"title":"Distribution of breeding shorebirds on the Arctic Coastal Plain of Alaska","docAbstract":"<p><span>Available information on the distribution of breeding shorebirds across the Arctic Coastal Plain of Alaska is dated, fragmented, and limited in scope. Herein, we describe the distribution of 19 shorebird species from data gathered at 407 study plots between 1998 and 2004. This information was collected using a single-visit rapid area search technique during territory establishment and early incubation periods, a time when social displays and vocalizations make the birds highly detectable. We describe the presence or absence of each species, as well as overall numbers of species, providing a regional perspective on shorebird distribution. We compare and contrast our shorebird distribution maps to those of prior studies and describe prominent patterns of shorebird distribution. Our examination of how shorebird distribution and numbers of species varied both latitudinally and longitudinally across the Arctic Coastal Plain of Alaska indicated that most shorebird species occur more frequently in the Beaufort Coastal Plain ecoregion (i.e., closer to the coast) than in the Brooks Foothills ecoregion (i.e., farther inland). Furthermore, the occurrence of several species indicated substantial longitudinal directionality. Species richness at surveyed sites was highest in the western portion of the Beaufort Coastal Plain ecoregion. The broad-scale distribution information we present here is valuable for evaluating potential effects of human development and climate change on Arctic-breeding shorebird populations.</span></p>","language":"English","publisher":"Arctic Institute of North America","doi":"10.14430/arctic220","usgsCitation":"Johnson, J., Lanctot, R., Andres, B.A., Bart, J., Brown, S.C., Kendall, S.J., and Payer, D.C., 2007, Distribution of breeding shorebirds on the Arctic Coastal Plain of Alaska: Arctic, v. 60, no. 3, p. 277-293, https://doi.org/10.14430/arctic220.","productDescription":"17 p.","startPage":"277","endPage":"293","numberOfPages":"17","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":477179,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.14430/arctic220","text":"Publisher Index Page"},{"id":238555,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Arctic Coastal Plain","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -160.76545815893368,\n              71.73753208468906\n            ],\n            [\n              -162.3930009704475,\n              68.96864566870872\n            ],\n            [\n              -142.67714191186246,\n              68.44977011466841\n            ],\n            [\n              -142.2944316878697,\n              71.12036514995935\n            ],\n            [\n              -160.76545815893368,\n              71.73753208468906\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"60","issue":"3","noUsgsAuthors":false,"publicationDate":"2009-12-10","publicationStatus":"PW","scienceBaseUri":"505a02c2e4b0c8380cd501bf","contributors":{"authors":[{"text":"Johnson, James A.","contributorId":84649,"corporation":false,"usgs":true,"family":"Johnson","given":"James A.","affiliations":[],"preferred":false,"id":428534,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lanctot, Richard B.","contributorId":77879,"corporation":false,"usgs":false,"family":"Lanctot","given":"Richard B.","affiliations":[{"id":6987,"text":"U.S. Fish and Wildlife Sevice","active":true,"usgs":false}],"preferred":false,"id":428533,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Andres, Brad A.","contributorId":317983,"corporation":false,"usgs":false,"family":"Andres","given":"Brad","email":"","middleInitial":"A.","affiliations":[{"id":12428,"text":"U. S. Fish and Wildlife Service","active":true,"usgs":false}],"preferred":false,"id":428536,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bart, Jonathan jon_bart@usgs.gov","contributorId":57025,"corporation":false,"usgs":true,"family":"Bart","given":"Jonathan","email":"jon_bart@usgs.gov","affiliations":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"preferred":false,"id":428535,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Brown, Stephen C.","contributorId":38457,"corporation":false,"usgs":false,"family":"Brown","given":"Stephen","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":428532,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kendall, Steven J.","contributorId":30911,"corporation":false,"usgs":false,"family":"Kendall","given":"Steven","email":"","middleInitial":"J.","affiliations":[{"id":6987,"text":"U.S. Fish and Wildlife Sevice","active":true,"usgs":false}],"preferred":false,"id":428537,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Payer, David C.","contributorId":7495,"corporation":false,"usgs":false,"family":"Payer","given":"David","email":"","middleInitial":"C.","affiliations":[{"id":6987,"text":"U.S. Fish and Wildlife Sevice","active":true,"usgs":false}],"preferred":false,"id":428531,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70031588,"text":"70031588 - 2007 - Downhole receiver function: A case study","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70031588","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Downhole receiver function: A case study","docAbstract":"Receiver function is defined as the spectral ratio of the radial component and the vertical component of the ground motion. It is used to characterize converted waves. We extend the use of the receiver function to downhole data using waves recorded in a borehole, excited by an earthquake of magnitude 4.0 near San Francisco, California, on 26 June 1994. The focal depth of the event was 6.6 km and the epicenter was located at a distance of 12.6 km from the borehole array. Six three-component sensors were located at different depths in a borehole. To extract a coherent response of the near-surface from the incoherent earthquake waves, we deconvolve the waves recorded by the sensors at different depths with the waves recorded by the sensor on the surface. Deconvolution applied to the waves in the S-time window recorded by the radial component result in an upgoing and a downgoing wave propagating with S-wave velocity. For the waves in the P-time window recorded by the radial component, deconvolution also gives an upgoing and a down-going wave propagating with S-wave velocity. This interesting result suggests a P-to-S conversion at a depth below the deepest sensor. To diagnose this we compute the receiver function for the borehole recording of the earthquake waves. The receiver function shows an upgoing wave with an arrival close to time t = 0 for the deepest sensor. The agreement of the upgoing wave in the receiver function with the travel-time curve for the P-to-S converted wave, calculated using the P- and the S-wave velocity profile, supports the hypothesis of a pronounced P-to-S conversion. We present a synthetic example to illustrate that the first arrival of the receiver function applied to borehole data gives the upward-propagating P-to-S converted wave. To corroborate the observation of the mode conversion, we apply receiver function to a different earthquake data recorded by the same borehole array in 1998. The focal depth of the event was 6.9 km and the epicenter was located at a distance of 13 km from the borehole array. The receiver function for these data also show an upgoing wave with a pulse close to time t = 0 at the deepest sensor. The moveout of the upgoing wave agrees with the travel-time curve for the P-to-S converted wave, hence supporting our observation of the mode conversion.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of the Seismological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1785/0120060256","issn":"00371106","usgsCitation":"Mehta, K., Snieder, R., and Graizer, V., 2007, Downhole receiver function: A case study: Bulletin of the Seismological Society of America, v. 97, no. 5, p. 1396-1403, https://doi.org/10.1785/0120060256.","startPage":"1396","endPage":"1403","numberOfPages":"8","costCenters":[],"links":[{"id":212480,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120060256"},{"id":239970,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"97","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a03b2e4b0c8380cd505fa","contributors":{"authors":[{"text":"Mehta, K.","contributorId":60440,"corporation":false,"usgs":true,"family":"Mehta","given":"K.","email":"","affiliations":[],"preferred":false,"id":432233,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Snieder, R.","contributorId":63924,"corporation":false,"usgs":true,"family":"Snieder","given":"R.","email":"","affiliations":[],"preferred":false,"id":432234,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Graizer, V.","contributorId":88930,"corporation":false,"usgs":true,"family":"Graizer","given":"V.","email":"","affiliations":[],"preferred":false,"id":432235,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031576,"text":"70031576 - 2007 - Survival and breeding advantages of larger Black Brant (<i>Branta bernicla nigricans</i>) goslings: Within- and among-cohort variation","interactions":[],"lastModifiedDate":"2017-05-08T13:01:11","indexId":"70031576","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3544,"text":"The Auk","onlineIssn":"1938-4254","printIssn":"0004-8038","active":true,"publicationSubtype":{"id":10}},"title":"Survival and breeding advantages of larger Black Brant (<i>Branta bernicla nigricans</i>) goslings: Within- and among-cohort variation","docAbstract":"<p><span>We examined the relationship between mass late in the first summer and survival and return to the natal breeding colony for 12 cohorts (1986-1997) of female Black Brant (</span><i>Branta bernicla nigricans</i><span>). We used Cormack-Jolly-Seber methods and the program MARK to analyze capture-recapture data. Models included two kinds of residuals from regressions of mass on days after peak of hatch when goslings were measured; one based on the entire sample (12 cohorts) and the other based only on individuals in the same cohort. Some models contained date of peak of hatch (a group covariate related to lateness of nesting in that year) and mean cohort residual mass. Finally, models allowed survival to vary among cohorts. The best model of encounter probability included an effect of residual mass on encounter probability and allowed encounter probability to vary among age classes and across years. All competitive models contained an effect of one of the estimates of residual mass; relatively larger goslings survived their first year at higher rates. Goslings in cohorts from later years in the analysis tended to have lower first-year survival, after controlling for residual mass, which reflected the generally smaller mean masses for these cohorts but was potentially also a result of population-density effects additional to those on growth. Variation among cohorts in mean mass accounted for 56% of variation among cohorts in first-year survival. Encounter probabilities, which were correlated with breeding probability, increased with relative mass, which suggests that larger goslings not only survived at higher rates but also bred at higher rates. Although our findings support the well-established linkage between gosling mass and fitness, they suggest that additional environmental factors also influence first-year survival.</span></p>","language":"English","publisher":"American Ornithological Society","doi":"10.1642/0004-8038(2007)124[1281:SABAOL]2.0.CO;2","issn":"00048038","usgsCitation":"Sedinger, J., and Chelgren, N., 2007, Survival and breeding advantages of larger Black Brant (<i>Branta bernicla nigricans</i>) goslings: Within- and among-cohort variation: The Auk, v. 124, no. 4, p. 1281-1293, https://doi.org/10.1642/0004-8038(2007)124[1281:SABAOL]2.0.CO;2.","productDescription":"13 p.","startPage":"1281","endPage":"1293","costCenters":[],"links":[{"id":492042,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1642/0004-8038(2007)124[1281:sabaol]2.0.co;2","text":"Publisher Index Page"},{"id":239766,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"124","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba2ace4b08c986b31f893","contributors":{"authors":[{"text":"Sedinger, J.S.","contributorId":75471,"corporation":false,"usgs":true,"family":"Sedinger","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":432193,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chelgren, N.D. 0000-0003-0944-9165","orcid":"https://orcid.org/0000-0003-0944-9165","contributorId":13387,"corporation":false,"usgs":true,"family":"Chelgren","given":"N.D.","affiliations":[],"preferred":false,"id":432192,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031574,"text":"70031574 - 2007 - Risk assessment of water quality in three North Carolina, USA, streams supporting federally endangered freshwater mussels (Unionidae)","interactions":[],"lastModifiedDate":"2017-05-22T16:12:47","indexId":"70031574","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Risk assessment of water quality in three North Carolina, USA, streams supporting federally endangered freshwater mussels (Unionidae)","docAbstract":"<p>Water quality data were collected from three drainages supporting the endangered Carolina heelsplitter (Lasmigona decorata) and dwarf wedgemussel (Alasmidonta heterodon) to determine the potential for impaired water quality to limit the recovery of these freshwater mussels in North Carolina, USA. Total recoverable copper, total residual chlorine, and total ammonia nitrogen were measured every two months for approximately a year at sites bracketing wastewater sources and mussel habitat. These data and state monitoring datasets were compared with ecological screening values, including estimates of chemical concentrations likely to be protective of mussels, and federal ambient water quality criteria to assess site risks following a hazard quotient approach. In one drainage, the site-specific ammonia ecological screening value for acute exposures was exceeded in 6% of the samples, and 15% of samples exceeded the chronic ecological screening value; however, ammonia concentrations were generally below levels of concern in other drainages. In all drainages, copper concentrations were higher than ecological screening values most frequently (exceeding the ecological screening values for acute exposures in 65-94% of the samples). Chlorine concentrations exceeding the acute water quality criterion were observed in 14 and 35% of samples in two of three drainages. The ecological screening values were exceeded most frequently in Goose Creek and the Upper Tar River drainages; concentrations rarely exceeded ecological screening values in the Swift Creek drainage except for copper. The site-specific risk assessment approach provides valuable information (including site-specific risk estimates and ecological screening values for protection) that can be applied through regulatory and nonregulatory means to improve water quality for mussels where risks are indicated and pollutant threats persist. ?? 2007 SETAC.</p>","language":"English","publisher":"Wiley","doi":"10.1897/06-561R.1","issn":"07307268","usgsCitation":"Ward, S., Augspurger, T., Dwyer, F., Kane, C., and Ingersoll, C., 2007, Risk assessment of water quality in three North Carolina, USA, streams supporting federally endangered freshwater mussels (Unionidae): Environmental Toxicology and Chemistry, v. 26, no. 10, p. 2075-2085, https://doi.org/10.1897/06-561R.1.","productDescription":"11 p.","startPage":"2075","endPage":"2085","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":239732,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212270,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1897/06-561R.1"}],"country":"United States","state":"North Carolina","otherGeospatial":"Goose Creek, Swift Creek, Tar River basin","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -80.75225830078125,\n              35.25795517382968\n            ],\n            [\n              -80.4583740234375,\n              35.19625600786368\n            ],\n            [\n              -80.782470703125,\n              34.93885938523973\n            ],\n            [\n              -80.93215942382812,\n              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T.","contributorId":81844,"corporation":false,"usgs":false,"family":"Augspurger","given":"T.","email":"","affiliations":[],"preferred":false,"id":432183,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dwyer, F.J.","contributorId":107818,"corporation":false,"usgs":true,"family":"Dwyer","given":"F.J.","email":"","affiliations":[],"preferred":false,"id":432186,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kane, C.","contributorId":101083,"corporation":false,"usgs":true,"family":"Kane","given":"C.","email":"","affiliations":[],"preferred":false,"id":432185,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ingersoll, C.G. 0000-0003-4531-5949","orcid":"https://orcid.org/0000-0003-4531-5949","contributorId":56338,"corporation":false,"usgs":true,"family":"Ingersoll","given":"C.G.","affiliations":[],"preferred":false,"id":432182,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031572,"text":"70031572 - 2007 - Linking ground-water age and chemistry data along flow paths: Implications for trends and transformations of nitrate and pesticides","interactions":[],"lastModifiedDate":"2018-09-26T15:48:13","indexId":"70031572","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2233,"text":"Journal of Contaminant Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Linking ground-water age and chemistry data along flow paths: Implications for trends and transformations of nitrate and pesticides","docAbstract":"<p>Tracer-based ground-water ages, along with the concentrations of pesticides, nitrogen species, and other redox-active constituents, were used to evaluate the trends and transformations of agricultural chemicals along flow paths in diverse hydrogeologic settings. A range of conditions affecting the transformation of nitrate and pesticides (e.g., thickness of unsaturated zone, redox conditions) was examined at study sites in Georgia, North Carolina, Wisconsin, and California. Deethylatrazine (DEA), a transformation product of atrazine, was typically present at concentrations higher than those of atrazine at study sites with thick unsaturated zones but not at sites with thin unsaturated zones. Furthermore, the fraction of atrazine plus DEA that was present as DEA did not increase as a function of ground-water age. These findings suggest that atrazine degradation occurs primarily in the unsaturated zone with little or no degradation in the saturated zone. Similar observations were also made for metolachlor and alachlor. The fraction of the initial nitrate concentration found as excess N2 (N2 derived from denitrification) increased with ground-water age only at the North Carolina site, where oxic conditions were generally limited to the top 5??m of saturated thickness. Historical trends in fluxes to ground water were evaluated by relating the times of recharge of ground-water samples, estimated using chlorofluorocarbon concentrations, with concentrations of the parent compound at the time of recharge, estimated by summing the molar concentrations of the parent compound and its transformation products in the age-dated sample. Using this approach, nitrate concentrations were estimated to have increased markedly from 1960 to the present at all study sites. Trends in concentrations of atrazine, metolachlor, alachlor, and their degradates were related to the timing of introduction and use of these compounds. Degradates, and to a lesser extent parent compounds, were detected in ground water dating back to the time these compounds were introduced.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.jconhyd.2007.05.007","issn":"01697722","usgsCitation":"Tesoriero, A., Saad, D.A., Burow, K., Frick, E.A., Puckett, L., and Barbash, J., 2007, Linking ground-water age and chemistry data along flow paths: Implications for trends and transformations of nitrate and pesticides: Journal of Contaminant Hydrology, v. 94, no. 1-2, p. 139-155, https://doi.org/10.1016/j.jconhyd.2007.05.007.","productDescription":"17 p.","startPage":"139","endPage":"155","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"links":[{"id":239700,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212242,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jconhyd.2007.05.007"}],"volume":"94","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a47d3e4b0c8380cd679e0","contributors":{"authors":[{"text":"Tesoriero, A. J.","contributorId":99127,"corporation":false,"usgs":true,"family":"Tesoriero","given":"A. J.","affiliations":[],"preferred":false,"id":432179,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Saad, D. A.","contributorId":85212,"corporation":false,"usgs":true,"family":"Saad","given":"D.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":432178,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Burow, K.R. 0000-0001-6006-6667","orcid":"https://orcid.org/0000-0001-6006-6667","contributorId":48283,"corporation":false,"usgs":true,"family":"Burow","given":"K.R.","affiliations":[],"preferred":false,"id":432175,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Frick, E. A.","contributorId":61840,"corporation":false,"usgs":true,"family":"Frick","given":"E.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":432176,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Puckett, L.J.","contributorId":27503,"corporation":false,"usgs":true,"family":"Puckett","given":"L.J.","email":"","affiliations":[],"preferred":false,"id":432174,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Barbash, J.E.","contributorId":62783,"corporation":false,"usgs":true,"family":"Barbash","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":432177,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031569,"text":"70031569 - 2007 - Time-optimum packet scheduling for many-to-one routing in wireless sensor networks","interactions":[],"lastModifiedDate":"2012-03-12T17:21:12","indexId":"70031569","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Time-optimum packet scheduling for many-to-one routing in wireless sensor networks","docAbstract":"This paper studies the WSN application scenario with periodical traffic from all sensors to a sink. We present a time-optimum and energy-efficient packet scheduling algorithm and its distributed implementation. We first give a general many-to-one packet scheduling algorithm for wireless networks, and then prove that it is time-optimum and costs max(2N(u1) - 1, N(u 0) -1) time slots, assuming each node reports one unit of data in each round. Here N(u0) is the total number of sensors, while N(u 1) denotes the number of sensors in a sink's largest branch subtree. With a few adjustments, we then show that our algorithm also achieves time-optimum scheduling in heterogeneous scenarios, where each sensor reports a heterogeneous amount of data in each round. Then we give a distributed implementation to let each node calculate its duty-cycle locally and maximize efficiency globally. In this packet scheduling algorithm, each node goes to sleep whenever it is not transceiving, so that the energy waste of idle listening is also eliminated. Finally, simulations are conducted to evaluate network performance using the Qualnet simulator. Among other contributions, our study also identifies the maximum reporting frequency that a deployed sensor network can handle. ??2006 IEEE.","largerWorkTitle":"2006 IEEE International Conference on Mobile Ad Hoc and Sensor Systems, MASS","conferenceTitle":"2006 IEEE International Conference on Mobile Ad Hoc and Sensor Sysetems, MASS","conferenceDate":"9 October 2006 through 12 October 2006","conferenceLocation":"Vancouver, BC","language":"English","doi":"10.1109/MOBHOC.2006.278656","isbn":"1424405076; 9781424405077","usgsCitation":"Song, W., Yuan, F., and LaHuser, R., 2007, Time-optimum packet scheduling for many-to-one routing in wireless sensor networks, <i>in</i> 2006 IEEE International Conference on Mobile Ad Hoc and Sensor Systems, MASS, Vancouver, BC, 9 October 2006 through 12 October 2006, p. 81-90, https://doi.org/10.1109/MOBHOC.2006.278656.","startPage":"81","endPage":"90","numberOfPages":"10","costCenters":[],"links":[{"id":212182,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1109/MOBHOC.2006.278656"},{"id":239632,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb3d4e4b08c986b325ff2","contributors":{"authors":[{"text":"Song, W.-Z.","contributorId":23334,"corporation":false,"usgs":true,"family":"Song","given":"W.-Z.","email":"","affiliations":[],"preferred":false,"id":432165,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Yuan, F.","contributorId":104287,"corporation":false,"usgs":true,"family":"Yuan","given":"F.","email":"","affiliations":[],"preferred":false,"id":432167,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"LaHuser, R.","contributorId":80900,"corporation":false,"usgs":true,"family":"LaHuser","given":"R.","email":"","affiliations":[],"preferred":false,"id":432166,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031566,"text":"70031566 - 2007 - Radiometric calibration status of Landsat-7 and Landsat-5","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70031566","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Radiometric calibration status of Landsat-7 and Landsat-5","docAbstract":"Launched in April 1999, Landsat-7 ETM+ continues to acquire data globally. The Scan Line Corrector in failure in 2003 has affected ground coverage and the recent switch to Bumper Mode operations in April 2007 has degraded the internal geometric accuracy of the data, but the radiometry has been unaffected. The best of the three on-board calibrators for the reflective bands, the Full Aperture Solar Calibrator, has indicated slow changes in the ETM+, but this is believed to be due to contamination on the panel rather then instrument degradation. The Internal Calibrator lamp 2, though it has not been used regularly throughout the whole mission, indicates smaller changes than the FASC since 2003. The changes indicated by lamp 2 are only statistically significant in band 1, circa 0.3% per year, and may be lamp as opposed to instrument degradations. Regular observations of desert targets in the Saharan and Arabian deserts indicate the no change in the ETM+ reflective band response, though the uncertainty is larger and does not preclude the small changes indicated by lamp 2. The thermal band continues to be stable and well-calibrated since an offset error was corrected in late-2000. Launched in 1984, Landsat-5 TM also continues to acquire global data; though without the benefit of an on-board recorder, data can only be acquired where a ground station is within range. Historically, the calibration of the TM reflective bands has used an onboard calibration system with multiple lamps. The calibration procedure for the TM reflective bands was updated in 2003 based on the best estimate at the time, using only one of the three lamps and a cross-calibration with Landsat-7 ETM+. Since then, the Saharan desert sites have been used to validate this calibration model. Problems were found with the lamp based model of up to 13% in band 1. Using the Saharan data, a new model was developed and implemented in the US processing system in April 2007. The TM thermal band was found to have a calibration offset error of 0.092 W/m 2 sr ??m (0.68K at 300K) based on vicarious calibration data between 1999 and 2006. The offset error was corrected in the US processing system on April 2007 for all data acquired since April 1999.","largerWorkTitle":"Proceedings of SPIE - The International Society for Optical Engineering","conferenceTitle":"Sensors, Systems, and Next-Generation Satellites XI","conferenceDate":"17 September 2007 through 20 September 2007","conferenceLocation":"Florence","language":"English","doi":"10.1117/12.738221","issn":"0277786X","isbn":"9780819469021","usgsCitation":"Barsi, J., Markham, B.L., Helder, D., and Chander, G., 2007, Radiometric calibration status of Landsat-7 and Landsat-5, <i>in</i> Proceedings of SPIE - The International Society for Optical Engineering, v. 6744, Florence, 17 September 2007 through 20 September 2007, https://doi.org/10.1117/12.738221.","costCenters":[],"links":[{"id":212629,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1117/12.738221"},{"id":240144,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6744","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a940fe4b0c8380cd8119c","contributors":{"authors":[{"text":"Barsi, J. A.","contributorId":24085,"corporation":false,"usgs":true,"family":"Barsi","given":"J. A.","affiliations":[],"preferred":false,"id":432149,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Markham, B. L.","contributorId":88872,"corporation":false,"usgs":true,"family":"Markham","given":"B.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":432152,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Helder, D. L. 0000-0002-7379-4679","orcid":"https://orcid.org/0000-0002-7379-4679","contributorId":51496,"corporation":false,"usgs":true,"family":"Helder","given":"D. L.","affiliations":[],"preferred":false,"id":432151,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Chander, G.","contributorId":51449,"corporation":false,"usgs":true,"family":"Chander","given":"G.","affiliations":[],"preferred":false,"id":432150,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031562,"text":"70031562 - 2007 - Seabird behavior as an indicator of food supplies: Sensitivity across the breeding season","interactions":[],"lastModifiedDate":"2018-08-19T20:06:45","indexId":"70031562","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2663,"text":"Marine Ecology Progress Series","active":true,"publicationSubtype":{"id":10}},"title":"Seabird behavior as an indicator of food supplies: Sensitivity across the breeding season","docAbstract":"<p>We used empirical data on the time allocation of common murres Uria aalge in relation to measures of local prey density to examine whether adults provisioning chicks are more sensitive to changes in prey density than birds that are incubating eggs. We hypothesized that seasonal differences in food requirements of incubating and chick-rearing parents would affect the form of the relationship between time spent at the colony and local food density. We found that the relationship did differ between the incubation and chick-rearing period in 3 important ways: (1) there was a strong non-linear relationship between food density and colony attendance during chick-rearing and a weaker relationship during incubation; (2) incubating birds were able to maintain relatively constant rates of attendance over a wider range of food densities than chick-rearing birds and only reduced colony attendance under extremely poor feeding conditions, if at all; and (3) incubating birds spent more time attending nest sites at the colony than provisioning birds. These differences confirmed that chick-rearing parents are more sensitive to changes in food density than incubating parents, and that measurements of time allocation during the incubation period would have limited value as an indicator of ecosystem change. ?? Inter-Research 2007.</p>","language":"English","publisher":"Inter-Research","doi":"10.3354/meps07072","issn":"01718630","usgsCitation":"Harding, A., Piatt, J.F., and Schmutz, J.A., 2007, Seabird behavior as an indicator of food supplies: Sensitivity across the breeding season: Marine Ecology Progress Series, v. 352, p. 269-274, https://doi.org/10.3354/meps07072.","productDescription":"6 p.","startPage":"269","endPage":"274","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":476950,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3354/meps07072","text":"Publisher Index Page"},{"id":240072,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212569,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3354/meps07072"}],"volume":"352","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8823e4b08c986b3167fc","contributors":{"authors":[{"text":"Harding, A.M.A.","contributorId":29088,"corporation":false,"usgs":true,"family":"Harding","given":"A.M.A.","email":"","affiliations":[],"preferred":false,"id":432125,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Piatt, John F. 0000-0002-4417-5748 jpiatt@usgs.gov","orcid":"https://orcid.org/0000-0002-4417-5748","contributorId":3025,"corporation":false,"usgs":true,"family":"Piatt","given":"John","email":"jpiatt@usgs.gov","middleInitial":"F.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":432126,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schmutz, Joel A. 0000-0002-6516-0836 jschmutz@usgs.gov","orcid":"https://orcid.org/0000-0002-6516-0836","contributorId":1805,"corporation":false,"usgs":true,"family":"Schmutz","given":"Joel","email":"jschmutz@usgs.gov","middleInitial":"A.","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":432124,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031559,"text":"70031559 - 2007 - Tsunami inundation and sediment transport in vicinity of coastal mangrove forest","interactions":[],"lastModifiedDate":"2023-07-25T11:22:49.952899","indexId":"70031559","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Tsunami inundation and sediment transport in vicinity of coastal mangrove forest","docAbstract":"Field measurements from Sumatra of tsunami wave height, erosion and deposition form a comprehensive data set that is tested against the Delft3D tsunami inundation and sediment transport model. Relative agreement between measured and modeled maximum water levels and sediment erosion and accumulation provides confidence that the model is reasonably characterizing the important processes of tsunami inundation. Adding a component to account for vegetation, the model is used to explore the effects of fringing mangrove forests on tsunami inundation and sedimentation. In model experiments, mangrove forests modify the water levels and flow speeds reached during tsunami inundation. Simulations with a mangrove forest result in sedimentation in the forest and not erosion, as occurs in the base case with no forest. This difference in sedimentation is important because the change in profile shape increases wave energy reflection off the beach and decreases wave energy penetration onto land.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","conferenceDate":"May 13-17, 2007","conferenceLocation":"New Orleans, LA","language":"English","publisher":"ASCE","doi":"10.1061/40926(239)86","isbn":"0784409269; 9780784409268","usgsCitation":"Gelfenbaum, G., Vatvani, D., Jaffe, B., and Dekker, F., 2007, Tsunami inundation and sediment transport in vicinity of coastal mangrove forest, <i>in</i> Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes, New Orleans, LA, May 13-17, 2007, https://doi.org/10.1061/40926(239)86.","costCenters":[],"links":[{"id":240036,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"505bb8a9e4b08c986b3279c7","contributors":{"authors":[{"text":"Gelfenbaum, G.","contributorId":72429,"corporation":false,"usgs":true,"family":"Gelfenbaum","given":"G.","email":"","affiliations":[],"preferred":false,"id":432107,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vatvani, D.","contributorId":6336,"corporation":false,"usgs":true,"family":"Vatvani","given":"D.","affiliations":[],"preferred":false,"id":432106,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jaffe, B.","contributorId":78517,"corporation":false,"usgs":true,"family":"Jaffe","given":"B.","affiliations":[],"preferred":false,"id":432108,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dekker, F.","contributorId":89417,"corporation":false,"usgs":true,"family":"Dekker","given":"F.","email":"","affiliations":[],"preferred":false,"id":432109,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031558,"text":"70031558 - 2007 - Acute toxicity of copper, ammonia, and chlorine to glochidia and juveniles of freshwater mussels (Unionidae)","interactions":[],"lastModifiedDate":"2016-06-01T16:59:33","indexId":"70031558","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Acute toxicity of copper, ammonia, and chlorine to glochidia and juveniles of freshwater mussels (Unionidae)","docAbstract":"<p>The objective of the present study was to determine acute toxicity of copper, ammonia, or chlorine to larval (glochidia) and juvenile mussels using the recently published American Society for Testing and Materials (ASTM) Standard guide for conducting laboratory toxicity tests with freshwater mussels. Toxicity tests were conducted with glochidia (24- to 48-h exposures) and juveniles (96-h exposures) of up to 11 mussel species in reconstituted ASTM hard water using copper, ammonia, or chlorine as a toxicant. Copper and ammonia tests also were conducted with five commonly tested species, including cladocerans (Daphnia magna and Ceriodaphnia dubia; 48-h exposures), amphipod (Hyalella azteca; 48-h exposures), rainbow trout (Oncorhynchus mykiss; 96-h exposures), and fathead minnow (Pimephales promelas; 96-h exposures). Median effective concentrations (EC50s) for commonly tested species were &gt;58 ??g Cu/L (except 15 ??g Cu/L for C. dubia) and &gt;13 mg total ammonia N/L, whereas the EC50s for mussels in most cases were 40 ??g/L and above the FAV in the WQC for chlorine. The results indicate that the early life stages of mussels generally were more sensitive to copper and ammonia than other organisms and that, including mussel toxicity data in a revision to the WQC, would lower the WQC for copper or ammonia. Furthermore, including additional mussel data in 2007 WQC for copper based on biotic ligand model would further lower the WQC. ?? 2007 SETAC.</p>","language":"English","publisher":"Wiley","doi":"10.1897/06-523R.1","issn":"07307268","usgsCitation":"Wang, N., Ingersoll, C., Hardesty, D., Ivey, C., Kunz, J., May, T., Dwyer, F., Roberts, A., Augspurger, T., Kane, C., Neves, R.J., and Barnhart, M., 2007, Acute toxicity of copper, ammonia, and chlorine to glochidia and juveniles of freshwater mussels (Unionidae): Environmental Toxicology and Chemistry, v. 26, no. 10, p. 2036-2047, https://doi.org/10.1897/06-523R.1.","productDescription":"12 p.","startPage":"2036","endPage":"2047","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":239999,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"10","noUsgsAuthors":false,"publicationDate":"2007-10-01","publicationStatus":"PW","scienceBaseUri":"5059e6dbe4b0c8380cd47696","contributors":{"authors":[{"text":"Wang, N.","contributorId":81615,"corporation":false,"usgs":true,"family":"Wang","given":"N.","email":"","affiliations":[],"preferred":false,"id":432101,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ingersoll, C.G. 0000-0003-4531-5949","orcid":"https://orcid.org/0000-0003-4531-5949","contributorId":56338,"corporation":false,"usgs":true,"family":"Ingersoll","given":"C.G.","affiliations":[],"preferred":false,"id":432099,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hardesty, D.K.","contributorId":43935,"corporation":false,"usgs":true,"family":"Hardesty","given":"D.K.","email":"","affiliations":[],"preferred":false,"id":432098,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ivey, C.D.","contributorId":33876,"corporation":false,"usgs":true,"family":"Ivey","given":"C.D.","email":"","affiliations":[],"preferred":false,"id":432097,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kunz, J.L.","contributorId":7872,"corporation":false,"usgs":true,"family":"Kunz","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":432094,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"May, T.W.","contributorId":75878,"corporation":false,"usgs":true,"family":"May","given":"T.W.","email":"","affiliations":[],"preferred":false,"id":432100,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Dwyer, F.J.","contributorId":107818,"corporation":false,"usgs":true,"family":"Dwyer","given":"F.J.","email":"","affiliations":[],"preferred":false,"id":432105,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Roberts, A.D.","contributorId":87757,"corporation":false,"usgs":true,"family":"Roberts","given":"A.D.","email":"","affiliations":[],"preferred":false,"id":432103,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Augspurger, T.","contributorId":81844,"corporation":false,"usgs":false,"family":"Augspurger","given":"T.","email":"","affiliations":[],"preferred":false,"id":432102,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Kane, C.M.","contributorId":20140,"corporation":false,"usgs":true,"family":"Kane","given":"C.M.","email":"","affiliations":[],"preferred":false,"id":432095,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Neves, R. J.","contributorId":30936,"corporation":false,"usgs":true,"family":"Neves","given":"R.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":432096,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Barnhart, M.C.","contributorId":107410,"corporation":false,"usgs":true,"family":"Barnhart","given":"M.C.","affiliations":[],"preferred":false,"id":432104,"contributorType":{"id":1,"text":"Authors"},"rank":12}]}}
,{"id":70031529,"text":"70031529 - 2007 - Molecular ecology of the big brown bat (Eptesicus fuscus): Genetic and natural history variation in a hybrid zone","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70031529","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2373,"text":"Journal of Mammalogy","onlineIssn":"1545-1542","printIssn":"0022-2372","active":true,"publicationSubtype":{"id":10}},"title":"Molecular ecology of the big brown bat (Eptesicus fuscus): Genetic and natural history variation in a hybrid zone","docAbstract":"Several geographically distinct mitochondrial DNA (mtDNA) lineages of the big brown bat (Eptesicus fuscus) have been documented in North America. Individuals from 2 of these lineages, an eastern and a western form, co-occur within maternity colonies in Colorado. The discovery of 2 divergent mtDNA lineages in sympatry prompted a set of questions regarding possible biological differences between haplotypes. We captured big brown bats at maternity roosts in Colorado and recorded data on body size, pelage color, litter size, roosting and overwintering behaviors, and local distributions. Wing biopsies were collected for genetic analysis. The ND2 region of the mtDNA molecule was used to determine lineage of the bats. In addition, nuclear DNA (nDNA) intron 1 of the ??-globin gene was used to determine if mtDNA lineages are hybridizing. Eastern and western mtDNA lineages differed by 10.3% sequence divergence and examination of genetic data suggests recent population expansion for both lineages. Differences in distribution occur along the Colorado Front Range, with an increasing proportion of western haplotypes farther south. Results from nDNA analyses demonstrated hybridization between the 2 lineages. Additionally, no outstanding distinctiveness was found between the mtDNA lineages in natural history characters examined. We speculate that historical climate changes separated this species into isolated eastern and western populations, and that secondary contact with subsequent interbreeding was facilitated by European settlement. ?? 2007 American Society of Mammalogists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Mammalogy","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1644/06-MAMM-A-228R1.1","issn":"00222372","usgsCitation":"Neubaum, M., Douglas, M., Douglas, M., and O'Shea, T., 2007, Molecular ecology of the big brown bat (Eptesicus fuscus): Genetic and natural history variation in a hybrid zone: Journal of Mammalogy, v. 88, no. 5, p. 1230-1238, https://doi.org/10.1644/06-MAMM-A-228R1.1.","startPage":"1230","endPage":"1238","numberOfPages":"9","costCenters":[],"links":[{"id":503855,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://zotero.org/groups/5435545/items/WK54LVZU","text":"External Repository"},{"id":212567,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1644/06-MAMM-A-228R1.1"},{"id":240070,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5d01e4b0c8380cd700cb","contributors":{"authors":[{"text":"Neubaum, M.A.","contributorId":50866,"corporation":false,"usgs":true,"family":"Neubaum","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":431968,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Douglas, M.R.","contributorId":76548,"corporation":false,"usgs":true,"family":"Douglas","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":431969,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Douglas, M.E.","contributorId":43570,"corporation":false,"usgs":true,"family":"Douglas","given":"M.E.","email":"","affiliations":[],"preferred":false,"id":431966,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"O'Shea, T. J. 0000-0002-0758-9730","orcid":"https://orcid.org/0000-0002-0758-9730","contributorId":50100,"corporation":false,"usgs":true,"family":"O'Shea","given":"T. J.","affiliations":[],"preferred":false,"id":431967,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031528,"text":"70031528 - 2007 - Use of a watershed model to characterize the fate and transport of fluometuron, a soil-applied cotton herbicide, in surface water","interactions":[],"lastModifiedDate":"2012-03-12T17:21:14","indexId":"70031528","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2040,"text":"International Journal of Environmental Analytical Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Use of a watershed model to characterize the fate and transport of fluometuron, a soil-applied cotton herbicide, in surface water","docAbstract":"The Soil and Water Assessment Tool (SWAT) was used to characterize the fate and transport of fluometuron (a herbicide used on cotton) in the Bogue Phalia Basin in northwestern Mississippi, USA. SWAT is a basin-scale watershed model, able to simulate hydrological, chemical, and sediment transport processes. After adjustments to a few parameters (specifically the SURLAG variable, the runoff curve number, Manning's N for overland flow, soil available water capacity, and the base-flow alpha factor) the SWAT model fit the observed streamflow well (the Coefficient of Efficiency and R2 were greater than 60). The results from comparing observed fluometuron concentrations with simulated concentrations were reasonable. The simulated concentrations (which were daily averages) followed the pattern of observed concentrations (instantaneous values) closely, but could be off in magnitude at times. Further calibration might have improved the fit, but given the uncertainties in the input data, it was not clear that any improvement would be due to a better understanding of the input variables. ?? 2007 Taylor & Francis.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Environmental Analytical Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1080/03067310701627819","issn":"03067319","usgsCitation":"Coupe, R., 2007, Use of a watershed model to characterize the fate and transport of fluometuron, a soil-applied cotton herbicide, in surface water: International Journal of Environmental Analytical Chemistry, v. 87, no. 13-14, p. 883-896, https://doi.org/10.1080/03067310701627819.","startPage":"883","endPage":"896","numberOfPages":"14","costCenters":[],"links":[{"id":212538,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/03067310701627819"},{"id":240035,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"13-14","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbea1e4b08c986b3296cc","contributors":{"authors":[{"text":"Coupe, R.H.","contributorId":84778,"corporation":false,"usgs":true,"family":"Coupe","given":"R.H.","affiliations":[],"preferred":false,"id":431965,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70031527,"text":"70031527 - 2007 - Evaluation of a non-point source pollution model, AnnAGNPS, in a tropical watershed","interactions":[],"lastModifiedDate":"2012-03-12T17:21:14","indexId":"70031527","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1551,"text":"Environmental Modelling and Software","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation of a non-point source pollution model, AnnAGNPS, in a tropical watershed","docAbstract":"Impaired water quality caused by human activity and the spread of invasive plant and animal species has been identified as a major factor of degradation of coastal ecosystems in the tropics. The main goal of this study was to evaluate the performance of AnnAGNPS (Annualized Non-Point Source Pollution Model), in simulating runoff and soil erosion in a 48 km2 watershed located on the Island of Kauai, Hawaii. The model was calibrated and validated using 2 years of observed stream flow and sediment load data. Alternative scenarios of spatial rainfall distribution and canopy interception were evaluated. Monthly runoff volumes predicted by AnnAGNPS compared well with the measured data (R2 = 0.90, P < 0.05); however, up to 60% difference between the actual and simulated runoff were observed during the driest months (May and July). Prediction of daily runoff was less accurate (R2 = 0.55, P < 0.05). Predicted and observed sediment yield on a daily basis was poorly correlated (R2 = 0.5, P < 0.05). For the events of small magnitude, the model generally overestimated sediment yield, while the opposite was true for larger events. Total monthly sediment yield varied within 50% of the observed values, except for May 2004. Among the input parameters the model was most sensitive to the values of ground residue cover and canopy cover. It was found that approximately one third of the watershed area had low sediment yield (0-1 t ha-1 y-1), and presented limited erosion threat. However, 5% of the area had sediment yields in excess of 5 t ha-1 y-1. Overall, the model performed reasonably well, and it can be used as a management tool on tropical watersheds to estimate and compare sediment loads, and identify \"hot spots\" on the landscape. ?? 2007 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Modelling and Software","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.envsoft.2006.12.001","issn":"13648152","usgsCitation":"Polyakov, V., Fares, A., Kubo, D., Jacobi, J., and Smith, C., 2007, Evaluation of a non-point source pollution model, AnnAGNPS, in a tropical watershed: Environmental Modelling and Software, v. 22, no. 11, p. 1617-1627, https://doi.org/10.1016/j.envsoft.2006.12.001.","startPage":"1617","endPage":"1627","numberOfPages":"11","costCenters":[],"links":[{"id":212537,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.envsoft.2006.12.001"},{"id":240034,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"22","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0c34e4b0c8380cd52a90","contributors":{"authors":[{"text":"Polyakov, V.","contributorId":96900,"corporation":false,"usgs":true,"family":"Polyakov","given":"V.","email":"","affiliations":[],"preferred":false,"id":431963,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fares, A.","contributorId":12697,"corporation":false,"usgs":true,"family":"Fares","given":"A.","email":"","affiliations":[],"preferred":false,"id":431960,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kubo, D.","contributorId":52401,"corporation":false,"usgs":true,"family":"Kubo","given":"D.","email":"","affiliations":[],"preferred":false,"id":431961,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jacobi, J.","contributorId":97321,"corporation":false,"usgs":true,"family":"Jacobi","given":"J.","email":"","affiliations":[],"preferred":false,"id":431964,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Smith, C.","contributorId":96429,"corporation":false,"usgs":true,"family":"Smith","given":"C.","affiliations":[],"preferred":false,"id":431962,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031514,"text":"70031514 - 2007 - Aeromagnetic mapping of the structure of Pine Canyon caldera and Chisos Mountains intrusion, Big Bend National Park, Texas","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70031514","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":"Aeromagnetic mapping of the structure of Pine Canyon caldera and Chisos Mountains intrusion, Big Bend National Park, Texas","docAbstract":"Analysis of aeromagnetic and gravity data reveals new details of the structure, igneous geology, and temporal evolution of the prominent, enigmatic ca.32 Ma Pine Canyon caldera and the Chisos Mountains (Big Bend National Park, Texas). The main caldera-filling Pine Canyon Rhyolite, the oldest member of the South Rim Formation, is reversely magnetized, allowing it to be used as a key marker bed for determining caldera fill thickness. Modeling of gravity and magnetic anomalies indicates that the Pine Canyon Rhyolite is probably thicker in the northeastern part of the caldera. Lineaments in the magnetic data suggest the presence of buried faults beneath the caldera that may have led to increased downdrop in the northeast versus the southwest, allowing a thicker section of caldera fill to accumulate there. The Pine Canyon caldera has been interpreted as a downsag caldera because it lacks surficial faulting, so these inferred faults are the first mapped features there that could be responsible for caldera collapse. The caldera boundary correlates well with the margins of a gravity low. General features of the caldera match well with basic models of downsag calderas, meaning that the Pine Canyon caldera may be a classic example of downsagging, of which few well-described examples exist, in terms of a geophysical signature. The source of a long-wavelength magnetic high over the Chisos Mountains is interpreted as a previously unknown broad intrusion, the long axis of which trends parallel to a major crustal boundary related to the Ouachita orogeny or an even earlier Precambrian margin. This feature represents the largest intrusion (28-34 km diameter, 1-4 km thick, 700-3000 km3 in volume) in an area where relatively small laccoliths are ubiquitous. The intrusion most likely represents a long-lived (>1 m.y.) reservoir replenished by small batches of magma of varying composition, as reflected in the variation of eruptive products from the Pine Canyon and Sierra Quemada calderas. The intrusion may represent the easternmost occurrence of voluminous Tertiary magmatism in the southwestern United States. ?? 2007 Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geological Society of America Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/B26150.1","issn":"00167606","usgsCitation":"Drenth, B., and Finn, C., 2007, Aeromagnetic mapping of the structure of Pine Canyon caldera and Chisos Mountains intrusion, Big Bend National Park, Texas: Geological Society of America Bulletin, v. 119, no. 11-12, p. 1521-1534, https://doi.org/10.1130/B26150.1.","startPage":"1521","endPage":"1534","numberOfPages":"14","costCenters":[],"links":[{"id":212354,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/B26150.1"},{"id":239825,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"119","issue":"11-12","noUsgsAuthors":false,"publicationDate":"2007-11-02","publicationStatus":"PW","scienceBaseUri":"5059e89ee4b0c8380cd47dee","contributors":{"authors":[{"text":"Drenth, B. J.","contributorId":49885,"corporation":false,"usgs":true,"family":"Drenth","given":"B. J.","affiliations":[],"preferred":false,"id":431876,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Finn, C. A. 0000-0002-6178-0405","orcid":"https://orcid.org/0000-0002-6178-0405","contributorId":93917,"corporation":false,"usgs":true,"family":"Finn","given":"C. A.","affiliations":[],"preferred":false,"id":431877,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031513,"text":"70031513 - 2007 - MODIS imagery as a tool for synoptic water quality assessments in the southern California coastal ocean","interactions":[],"lastModifiedDate":"2023-07-05T12:14:26.557776","indexId":"70031513","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"MODIS imagery as a tool for synoptic water quality assessments in the southern California coastal ocean","docAbstract":"The dynamics of rainstorm plumes in the coastal waters of southern California was studied during the Bight'03 Regional Water Quality Program surveys. Measurements of surface salinity and bacterial counts collected from research vessels were compared to MODIS-Aqua satellite imagery. The spectra of normalized water-leaving radiation (nLw) were different in plumes and ambient ocean waters, enabling plumes discrimination and plume area size assessments from remotely-sensed data. The plume/ocean nLw differences (i.e., plume optical signatures) were most evident during first days after the rainstorm over the San Pedro shelf and in the San Diego region and less evident in Santa Monica Bay, where suspended sediments concentration in discharged water was lower than in other regions. In the Ventura area, plumes contained more suspended sediments than in other regions, but the grid of ship-based stations covered only a small part of the freshwater plume and was insufficient to reveal the differences between the plume and ocean optical signatures. The accuracy of plume area assessments from satellite imagery was not high (77% on average), seemingly because of inexactitude in satellite data processing. Nevertheless, satellite imagery is a useful tool for the estimation of the extent of polluted plumes, which is hardly achievable by contact methods.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of SPIE - The International Society for Optical Engineering","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Coastal Ocean Remote Sensing","conferenceDate":"August 26-27, 2007","conferenceLocation":"San Diego, CA","language":"English","publisher":"SPIE","doi":"10.1117/12.732754","issn":"0277786X","isbn":"9780819468284","usgsCitation":"Nezlin, N., DiGiacomo, P., Jones, B., Reifel, K., Warrick, J., Johnson, S., and Mengel, M., 2007, MODIS imagery as a tool for synoptic water quality assessments in the southern California coastal ocean, <i>in</i> Proceedings of SPIE - The International Society for Optical Engineering, v. 6680, San Diego, CA, August 26-27, 2007, https://doi.org/10.1117/12.732754.","costCenters":[],"links":[{"id":239794,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6680","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4ae6e4b0c8380cd69127","contributors":{"authors":[{"text":"Nezlin, N.P.","contributorId":77644,"corporation":false,"usgs":true,"family":"Nezlin","given":"N.P.","affiliations":[],"preferred":false,"id":431873,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"DiGiacomo, P.M.","contributorId":39501,"corporation":false,"usgs":true,"family":"DiGiacomo","given":"P.M.","affiliations":[],"preferred":false,"id":431870,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jones, B.H.","contributorId":96810,"corporation":false,"usgs":true,"family":"Jones","given":"B.H.","email":"","affiliations":[],"preferred":false,"id":431875,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Reifel, K.M.","contributorId":49327,"corporation":false,"usgs":true,"family":"Reifel","given":"K.M.","affiliations":[],"preferred":false,"id":431871,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Warrick, J.A.","contributorId":53503,"corporation":false,"usgs":true,"family":"Warrick","given":"J.A.","affiliations":[],"preferred":false,"id":431872,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Johnson, S.C.","contributorId":93008,"corporation":false,"usgs":true,"family":"Johnson","given":"S.C.","email":"","affiliations":[],"preferred":false,"id":431874,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Mengel, M.J.","contributorId":21267,"corporation":false,"usgs":true,"family":"Mengel","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":431869,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70031508,"text":"70031508 - 2007 - Analysis of impacts of urban land use and land cover on air quality in the Las Vegas region using remote sensing information and ground observations","interactions":[],"lastModifiedDate":"2017-04-12T15:58:28","indexId":"70031508","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2068,"text":"International Journal of Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Analysis of impacts of urban land use and land cover on air quality in the Las Vegas region using remote sensing information and ground observations","docAbstract":"<p><span>Urban development in the Las Vegas Valley of Nevada (USA) has expanded rapidly over the past 50 years. The air quality in the valley has suffered owing to increases from anthropogenic emissions of carbon monoxide, ozone and criteria pollutants of particular matter. Air quality observations show that pollutant concentrations have apparent heterogeneous characteristics in the urban area. Quantified urban land use and land cover information derived from satellite remote sensing data indicate an apparent local influence of urban development density on air pollutant distributions. Multi‐year observational data collected by a network of local air monitoring stations specify that ozone maximums develop in the May and June timeframe, whereas minimum concentrations generally occur from November to February. The fine particulate matter maximum occurs in July. Ozone concentrations are highest on the west and northwest sides of the valley. Night‐time ozone reduction contributes to the heterogeneous features of the spatial distribution for average ozone levels in the Las Vegas metropolitan area. Decreased ozone levels associated with increased urban development density suggest that the highest ozone and lowest nitrogen oxides concentrations are associated with medium to low density urban development in Las Vegas.</span></p>","language":"English","publisher":"Taylor & Francis","doi":"10.1080/01431160701227653","issn":"01431161","usgsCitation":"Xian, G., 2007, Analysis of impacts of urban land use and land cover on air quality in the Las Vegas region using remote sensing information and ground observations: International Journal of Remote Sensing, v. 28, no. 24, p. 5427-5445, https://doi.org/10.1080/01431160701227653.","productDescription":"19 p.","startPage":"5427","endPage":"5445","numberOfPages":"19","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":239729,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212267,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/01431160701227653"}],"volume":"28","issue":"24","noUsgsAuthors":false,"publicationDate":"2007-12-21","publicationStatus":"PW","scienceBaseUri":"5059eb1ce4b0c8380cd48c19","contributors":{"authors":[{"text":"Xian, G. 0000-0001-5674-2204","orcid":"https://orcid.org/0000-0001-5674-2204","contributorId":65656,"corporation":false,"usgs":true,"family":"Xian","given":"G.","affiliations":[],"preferred":false,"id":431854,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70031504,"text":"70031504 - 2007 - Regional beach/cliff system dynamics along the california coast","interactions":[],"lastModifiedDate":"2012-03-12T17:21:11","indexId":"70031504","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Regional beach/cliff system dynamics along the california coast","docAbstract":"The coast of California is comprised of both sandy shorelines and cliffed coastline, and in many areas these features spatially coincide. In order to better understand the regional trends of change along the California coast, the U.S. Geological Survey is quantifying both sandy shoreline change and coastal cliff retreat for the state. The resulting database was used to examine the dynamics of the beach/cliff system. We found inconsistent evidence of a relationship between rates of cliff retreat and shoreline change on the spatial scale of 100-km cells. However, when the data are correlated within individual regions, a strong relationship exists between the geomorphology of the coast and the behavior of the beach/cliff system. Areas of high-relief coast show negative correlations, indicating that higher rates of cliff retreat correlate with lower rates of shoreline erosion. In contrast, low- to moderate-relief coasts show strong positive correlations.","largerWorkTitle":"Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","conferenceTitle":"6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","conferenceDate":"13 May 2007 through 17 May 2007","conferenceLocation":"New Orleans, LA","language":"English","doi":"10.1061/40926(239)133","isbn":"0784409269; 9780784409268","usgsCitation":"Hapke, C., and Reid, D., 2007, Regional beach/cliff system dynamics along the california coast, <i>in</i> Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes, New Orleans, LA, 13 May 2007 through 17 May 2007, https://doi.org/10.1061/40926(239)133.","costCenters":[],"links":[{"id":212237,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/40926(239)133"},{"id":239695,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"50e4a4aee4b0e8fec6cdbbfc","contributors":{"authors":[{"text":"Hapke, C.J.","contributorId":108233,"corporation":false,"usgs":true,"family":"Hapke","given":"C.J.","email":"","affiliations":[],"preferred":false,"id":431844,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reid, Don","contributorId":68110,"corporation":false,"usgs":true,"family":"Reid","given":"Don","affiliations":[],"preferred":false,"id":431843,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031501,"text":"70031501 - 2007 - Late quaternary paleoseismology of the southern Steens fault zone, northern Nevada","interactions":[],"lastModifiedDate":"2012-03-12T17:21:12","indexId":"70031501","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Late quaternary paleoseismology of the southern Steens fault zone, northern Nevada","docAbstract":"The 192-km-long Steens fault zone is the most prominent normal fault system in the northern Basin and Range province of western North America. We use trench mapping and radiometric dating to estimate displacements and timing of the last three surface-rupturing earthquakes (E1-E3) on the southern part of the fault south of Denio, Nevada. Coseismic displacements range from 1.1 to 2.2 ?? 0.5 m, and radiometric ages indicate earthquake times of 11.5 ?? 2.0 ka (E3), 6.1 ?? 0.5 ka (E2), and 4.6 ?? 1.0 ka (E1). These data yield recurrence intervals of 5.4 ?? 2.1 k.y. between E3 and E2, 1.5 ?? 1.1 k.y. between E2 and E1, and an elapsed time of 4.6 ?? 1.0 k.y. since E1. The recurrence data yield variable interval slip rates (between 0.2 ?? 0.22 and 1.5 ?? 2.3 mm/yr), but slip rates averaged over the past ???18 k.y. (0.24 ?? 0.06 mm/year) are similar to long-term (8.5-12.5 Ma) slip rates (0.2 ?? 0.1 mm /yr) measured a few kilometers to the north. We infer from the lack of significant topographic relief across the fault in Bog Hot Valley that the fault zone is propagating southward and may now be connected with a fault at the northwestern end of the Pine Forest Range. Displacements documented in the trench and a rupture length of 37 km indicate a history of three latest Quaternary earthquakes with magnitudes of M 6.6-7.1 on the southern part of the Steens fault zone.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of the Seismological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1785/0120060202","issn":"00371106","usgsCitation":"Personius, S., Crone, A.J., Machette, M.N., Mahan, S., Kyung, J., Cisneros, H., and Lidke, D., 2007, Late quaternary paleoseismology of the southern Steens fault zone, northern Nevada: Bulletin of the Seismological Society of America, v. 97, no. 5, p. 1662-1678, https://doi.org/10.1785/0120060202.","startPage":"1662","endPage":"1678","numberOfPages":"17","costCenters":[],"links":[{"id":212178,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120060202"},{"id":239628,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"97","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4557e4b0c8380cd67229","contributors":{"authors":[{"text":"Personius, S. F. 0000-0001-8347-7370","orcid":"https://orcid.org/0000-0001-8347-7370","contributorId":31408,"corporation":false,"usgs":true,"family":"Personius","given":"S. F.","affiliations":[],"preferred":false,"id":431819,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Crone, A. J.","contributorId":84363,"corporation":false,"usgs":true,"family":"Crone","given":"A.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":431821,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Machette, M. N.","contributorId":19561,"corporation":false,"usgs":true,"family":"Machette","given":"M.","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":431818,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mahan, S. A. 0000-0001-5214-7774","orcid":"https://orcid.org/0000-0001-5214-7774","contributorId":94333,"corporation":false,"usgs":true,"family":"Mahan","given":"S. A.","affiliations":[],"preferred":false,"id":431822,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kyung, J.B.","contributorId":7499,"corporation":false,"usgs":true,"family":"Kyung","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":431816,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Cisneros, H.","contributorId":60857,"corporation":false,"usgs":true,"family":"Cisneros","given":"H.","email":"","affiliations":[],"preferred":false,"id":431820,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Lidke, D. J.","contributorId":10857,"corporation":false,"usgs":true,"family":"Lidke","given":"D. J.","affiliations":[],"preferred":false,"id":431817,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70031498,"text":"70031498 - 2007 - Persistent chlordane concentrations in long island sound sediment: Implications from chlordane, <sup>210</sup>Pb, and <sup>137</sup>Cs profiles","interactions":[],"lastModifiedDate":"2018-05-02T21:28:45","indexId":"70031498","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Persistent chlordane concentrations in long island sound sediment: Implications from chlordane, <sup>210</sup>Pb, and <sup>137</sup>Cs profiles","docAbstract":"Concentrations of chlordane, a banned termiticide and pesticide, were examined in recently collected surficial sediment (10 sites) and sediment cores (4 sites) in Long Island Sound (LIS).The highest chlordane concentrations were observed in western LIS, near highly urbanized areas. Chlordane concentrations did not decrease significantly in the past decade when compared to the data collected in 1996, consistent with the observation of near-constant chlordane levels in blue mussel tissues collected during the same time period. Chlordane concentrations in many of the sites exceeded levels above which harmful effects on sediment-dwelling organisms are expected to frequently occur. Chlordane concentrations in two of the four sediment cores showed a peak below the sediment surface, suggesting reduced chlordane inputs in recent years. The lack of a chlordane concentration maximum below the sediment surface in the other two cores, coupled with the lack of a well-defined <sup>137</sup>Cs peak, indicated significant sediment mixing. Simulations of <sup>137</sup>Cs and <sup>210</sup>Pb profiles in sediment cores with a simple sediment-mixing model were used to constrain both the deposition rate and the bioturbation rate of the sediment. Simulations of the chlordane profiles indicated continued chlordane input to LIS long after chlordane was phased out in the U.S. Continued chlordane input and significant sediment mixing may have contributed to the persistent chlordane concentrations in surficial sediment, which poses long-term threats to benthic organisms in LIS.","language":"English","publisher":"American Chemical Society","doi":"10.1021/es070749a","issn":"0013936X","usgsCitation":"Yang, L., Li, X., Crusius, J., Jans, U., Melcer, M., and Zhang, P., 2007, Persistent chlordane concentrations in long island sound sediment: Implications from chlordane, <sup>210</sup>Pb, and <sup>137</sup>Cs profiles: Environmental Science & Technology, v. 41, no. 22, p. 7723-7729, https://doi.org/10.1021/es070749a.","productDescription":"7 p.","startPage":"7723","endPage":"7729","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":240140,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New York","otherGeospatial":"Long Island","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -74.674072265625,\n              40.22082997283287\n            ],\n            [\n              -71.3177490234375,\n              40.22082997283287\n            ],\n            [\n              -71.3177490234375,\n              41.5579215778042\n            ],\n            [\n              -74.674072265625,\n              41.5579215778042\n            ],\n            [\n              -74.674072265625,\n              40.22082997283287\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"41","issue":"22","noUsgsAuthors":false,"publicationDate":"2007-10-16","publicationStatus":"PW","scienceBaseUri":"505a76f4e4b0c8380cd783b0","contributors":{"authors":[{"text":"Yang, L.","contributorId":6200,"corporation":false,"usgs":true,"family":"Yang","given":"L.","affiliations":[],"preferred":false,"id":431799,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Li, X.","contributorId":67635,"corporation":false,"usgs":true,"family":"Li","given":"X.","email":"","affiliations":[],"preferred":false,"id":431803,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Crusius, John 0000-0003-2554-0831 jcrusius@usgs.gov","orcid":"https://orcid.org/0000-0003-2554-0831","contributorId":2155,"corporation":false,"usgs":true,"family":"Crusius","given":"John","email":"jcrusius@usgs.gov","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":431801,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jans, U.","contributorId":35545,"corporation":false,"usgs":true,"family":"Jans","given":"U.","email":"","affiliations":[],"preferred":false,"id":431800,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Melcer, M.E.","contributorId":57270,"corporation":false,"usgs":true,"family":"Melcer","given":"M.E.","email":"","affiliations":[],"preferred":false,"id":431802,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Zhang, P.","contributorId":92822,"corporation":false,"usgs":true,"family":"Zhang","given":"P.","email":"","affiliations":[],"preferred":false,"id":431804,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031486,"text":"70031486 - 2007 - Is statistical power to detect trends a good assessment of population monitoring?","interactions":[],"lastModifiedDate":"2012-03-12T17:21:14","indexId":"70031486","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1015,"text":"Biological Conservation","active":true,"publicationSubtype":{"id":10}},"title":"Is statistical power to detect trends a good assessment of population monitoring?","docAbstract":"The ability to detect trends in population abundance is of obvious interest to wildlife managers. In recent years, the probability of detecting defined population trends has been the most common method of assessing monitoring programs. Such analyses require many assumptions, including a model for population change and a model for variance. To demonstrate potential effects of these assumptions on power analysis results, we present data for Red-tailed Tropicbirds (Phaethon rubricauda) from Tern Island, Hawaii. Depending on our assumptions, the power to detect a 50% decline over 10 years varied from 80% to 100%. We argue that monitoring standards based upon the ability to detect population trends should be applied cautiously. As a complementary approach, we propose that monitoring standards should emphasize attributes of sampling design that increase precision (e.g., randomization, bias, and detection probability). By using standards of precision, managers can focus on the sources of variation that can be minimized. A sampling design approach to monitoring standards provides a useful complement to standards of statistical power to detect annual trends.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biological Conservation","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.biocon.2007.08.007","issn":"00063207","usgsCitation":"Seavy, N., and Reynolds, M., 2007, Is statistical power to detect trends a good assessment of population monitoring?: Biological Conservation, v. 140, no. 1-2, p. 187-191, https://doi.org/10.1016/j.biocon.2007.08.007.","startPage":"187","endPage":"191","numberOfPages":"5","costCenters":[],"links":[{"id":212472,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.biocon.2007.08.007"},{"id":239962,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"140","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3f2ce4b0c8380cd64306","contributors":{"authors":[{"text":"Seavy, N.E.","contributorId":26403,"corporation":false,"usgs":true,"family":"Seavy","given":"N.E.","affiliations":[],"preferred":false,"id":431747,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reynolds, M.H. 0000-0001-7253-8158","orcid":"https://orcid.org/0000-0001-7253-8158","contributorId":64214,"corporation":false,"usgs":true,"family":"Reynolds","given":"M.H.","affiliations":[],"preferred":false,"id":431748,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031467,"text":"70031467 - 2007 - Random forests for classification in ecology","interactions":[],"lastModifiedDate":"2012-03-12T17:21:12","indexId":"70031467","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Random forests for classification in ecology","docAbstract":"Classification procedures are some of the most widely used statistical methods in ecology. Random forests (RF) is a new and powerful statistical classifier that is well established in other disciplines but is relatively unknown in ecology. Advantages of RF compared to other statistical classifiers include (1) very high classification accuracy; (2) a novel method of determining variable importance; (3) ability to model complex interactions among predictor variables; (4) flexibility to perform several types of statistical data analysis, including regression, classification, survival analysis, and unsupervised learning; and (5) an algorithm for imputing missing values. We compared the accuracies of RF and four other commonly used statistical classifiers using data on invasive plant species presence in Lava Beds National Monument, California, USA, rare lichen species presence in the Pacific Northwest, USA, and nest sites for cavity nesting birds in the Uinta Mountains, Utah, USA. We observed high classification accuracy in all applications as measured by cross-validation and, in the case of the lichen data, by independent test data, when comparing RF to other common classification methods. We also observed that the variables that RF identified as most important for classifying invasive plant species coincided with expectations based on the literature. ?? 2007 by the Ecological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1890/07-0539.1","issn":"00129658","usgsCitation":"Cutler, D., Edwards, T., Beard, K., Cutler, A., Hess, K., Gibson, J., and Lawler, J., 2007, Random forests for classification in ecology: Ecology, v. 88, no. 11, p. 2783-2792, https://doi.org/10.1890/07-0539.1.","startPage":"2783","endPage":"2792","numberOfPages":"10","costCenters":[],"links":[{"id":212176,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/07-0539.1"},{"id":239626,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a9494e4b0c8380cd814c4","contributors":{"authors":[{"text":"Cutler, D.R.","contributorId":89684,"corporation":false,"usgs":true,"family":"Cutler","given":"D.R.","email":"","affiliations":[],"preferred":false,"id":431629,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Edwards, T.C. Jr. 0000-0002-0773-0909","orcid":"https://orcid.org/0000-0002-0773-0909","contributorId":76486,"corporation":false,"usgs":true,"family":"Edwards","given":"T.C.","suffix":"Jr.","affiliations":[],"preferred":false,"id":431628,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Beard, K.H.","contributorId":33531,"corporation":false,"usgs":true,"family":"Beard","given":"K.H.","affiliations":[],"preferred":false,"id":431625,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cutler, A.","contributorId":50354,"corporation":false,"usgs":true,"family":"Cutler","given":"A.","email":"","affiliations":[],"preferred":false,"id":431626,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hess, K.T.","contributorId":31204,"corporation":false,"usgs":true,"family":"Hess","given":"K.T.","email":"","affiliations":[],"preferred":false,"id":431624,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Gibson, J.","contributorId":52399,"corporation":false,"usgs":true,"family":"Gibson","given":"J.","affiliations":[],"preferred":false,"id":431627,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Lawler, J.J.","contributorId":8641,"corporation":false,"usgs":true,"family":"Lawler","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":431623,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70031456,"text":"70031456 - 2007 - Adequacy of satellite derived rainfall data for stream flow modeling","interactions":[],"lastModifiedDate":"2017-12-19T13:18:54","indexId":"70031456","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2822,"text":"Natural Hazards","active":true,"publicationSubtype":{"id":10}},"title":"Adequacy of satellite derived rainfall data for stream flow modeling","docAbstract":"Floods are the most common and widespread climate-related hazard on Earth. Flood forecasting can reduce the death toll associated with floods. Satellites offer effective and economical means for calculating areal rainfall estimates in sparsely gauged regions. However, satellite-based rainfall estimates have had limited use in flood forecasting and hydrologic stream flow modeling because the rainfall estimates were considered to be unreliable. In this study we present the calibration and validation results from a spatially distributed hydrologic model driven by daily satellite-based estimates of rainfall for sub-basins of the Nile and Mekong Rivers. The results demonstrate the usefulness of remotely sensed precipitation data for hydrologic modeling when the hydrologic model is calibrated with such data. However, the remotely sensed rainfall estimates cannot be used confidently with hydrologic models that are calibrated with rain gauge measured rainfall, unless the model is recalibrated. ?? Springer Science+Business Media, Inc. 2007.","language":"English","publisher":"Springer","doi":"10.1007/s11069-007-9121-6","issn":"0921030X","usgsCitation":"Artan, G., Gadain, H., Smith, J., Asante, K., Bandaragoda, C., and Verdin, J., 2007, Adequacy of satellite derived rainfall data for stream flow modeling: Natural Hazards, v. 43, no. 2, p. 167-185, https://doi.org/10.1007/s11069-007-9121-6.","productDescription":"19 p.","startPage":"167","endPage":"185","numberOfPages":"19","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":212500,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11069-007-9121-6"},{"id":239993,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-05-16","publicationStatus":"PW","scienceBaseUri":"5059e6f3e4b0c8380cd47745","contributors":{"authors":[{"text":"Artan, G.","contributorId":27262,"corporation":false,"usgs":true,"family":"Artan","given":"G.","affiliations":[],"preferred":false,"id":431564,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gadain, Hussein","contributorId":6255,"corporation":false,"usgs":true,"family":"Gadain","given":"Hussein","email":"","affiliations":[],"preferred":false,"id":431563,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, Jodie","contributorId":29531,"corporation":false,"usgs":true,"family":"Smith","given":"Jodie","email":"","affiliations":[],"preferred":false,"id":431567,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Asante, Kwasi","contributorId":59632,"corporation":false,"usgs":true,"family":"Asante","given":"Kwasi","email":"","affiliations":[],"preferred":false,"id":431566,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bandaragoda, C.J.","contributorId":98947,"corporation":false,"usgs":true,"family":"Bandaragoda","given":"C.J.","affiliations":[],"preferred":false,"id":431568,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Verdin, J. P. 0000-0003-0238-9657","orcid":"https://orcid.org/0000-0003-0238-9657","contributorId":33033,"corporation":false,"usgs":true,"family":"Verdin","given":"J. P.","affiliations":[],"preferred":false,"id":431565,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031453,"text":"70031453 - 2007 - Quantification of changes in metal loading from storm runoff, Merse River (Tuscany, Italy)","interactions":[],"lastModifiedDate":"2020-03-11T06:24:44","indexId":"70031453","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2745,"text":"Mine Water and the Environment","active":true,"publicationSubtype":{"id":10}},"title":"Quantification of changes in metal loading from storm runoff, Merse River (Tuscany, Italy)","docAbstract":"<p>The Merse River in Tuscany is affected by mine drainage and the weathering of mine wastes along several kilometres of its catchment. The metal loading to the stream was quantified by defining detailed profiles of discharge and concentration, using tracer-dilution and synoptic-sampling techniques. During the course of a field experiment to evaluate metal loading to the Merse, such data were obtained for both storm and pre-storm conditions, providing a unique opportunity for comparison. Iron, Cu, and Mn were chosen to illustrate changes resulting from the storm. The total-recoverable load of Fe increased 21-fold, while loads of Cu and Mn increased by 8- and 7-fold, respectively, during the storm runoff. The increases most likely resulted from flushing particulates from near the stream, resuspension of colloidal material from the streambed, and increased ground-water inflow to the stream. The increases in Cu and Mn loads results from their association with colloids. It is possible that in-stream colloids had relatively more Cu than Mn, while near-stream colloids had relatively more Mn. Each of the metals also increased as a result of increased ground-water discharge during the storm. Despite great increases in load, the filterable concentrations of these metals did not increase substantially, remaining below chronic levels of toxicity.</p>","language":"English","publisher":"Springer","doi":"10.1007/s10230-007-0020-6","issn":"10259112","usgsCitation":"Kimball, B.A., Bianchi, F., Walton-Day, K., Runkel, R.L., Nannucci, M., and Salvadori, A., 2007, Quantification of changes in metal loading from storm runoff, Merse River (Tuscany, Italy): Mine Water and the Environment, v. 26, no. 4, p. 209-216, https://doi.org/10.1007/s10230-007-0020-6.","productDescription":"8 p.","startPage":"209","endPage":"216","costCenters":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":477187,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.607.3689","text":"External Repository"},{"id":239960,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212470,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10230-007-0020-6"}],"country":"Italy","county":"Tuscany","otherGeospatial":"Merse River","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"MultiPolygon\",\"coordinates\":[[[[15.52038,38.23116],[15.16024,37.44405],[15.3099,37.13422],[15.09999,36.61999],[14.33523,36.99663],[13.82673,37.10453],[12.431,37.61295],[12.57094,38.12638],[13.74116,38.03497],[14.76125,38.14387],[15.52038,38.23116]]],[[[9.21001,41.20999],[9.80998,40.50001],[9.66952,39.17738],[9.21482,39.24047],[8.80694,38.90662],[8.4283,39.17185],[8.38825,40.37831],[8.16,40.95001],[8.70999,40.89998],[9.21001,41.20999]]],[[[12.37649,46.76756],[13.80648,46.50931],[13.69811,46.01678],[13.93763,45.59102],[13.14161,45.73669],[12.32858,45.38178],[12.38387,44.88537],[12.26145,44.60048],[12.58924,44.09137],[13.52691,43.58773],[14.02982,42.76101],[15.14257,41.95514],[15.92619,41.96132],[16.1699,41.74029],[15.88935,41.54108],[16.785,41.17961],[17.51917,40.87714],[18.37669,40.35562],[18.48025,40.16887],[18.29339,39.81077],[17.73838,40.27767],[16.8696,40.44223],[16.44874,39.7954],[17.17149,39.4247],[17.05284,38.90287],[16.63509,38.84357],[16.10096,37.9859],[15.68409,37.90885],[15.68796,38.21459],[15.89198,38.75094],[16.10933,38.96455],[15.71881,39.54407],[15.41361,40.04836],[14.9985,40.17295],[14.70327,40.60455],[14.06067,40.78635],[13.62799,41.18829],[12.88808,41.25309],[12.10668,41.70453],[11.19191,42.35543],[10.51195,42.93146],[10.20003,43.92001],[9.70249,44.03628],[8.88895,44.36634],[8.42856,44.23123],[7.85077,43.76715],[7.43518,43.69384],[7.5496,44.1279],[7.00756,44.25477],[6.74996,45.02852],[7.09665,45.3331],[6.80236,45.70858],[6.84359,45.99115],[7.27385,45.77695],[7.75599,45.82449],[8.31663,46.16364],[8.48995,46.00515],[8.96631,46.03693],[9.18288,46.44021],[9.92284,46.3149],[10.36338,46.48357],[10.4427,46.89355],[11.04856,46.75136],[11.16483,46.94158],[12.15309,47.11539],[12.37649,46.76756]]]]},\"properties\":{\"name\":\"Italy\"}}]}","volume":"26","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-10-26","publicationStatus":"PW","scienceBaseUri":"505a91a9e4b0c8380cd803ad","contributors":{"authors":[{"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":431556,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bianchi, F.","contributorId":80490,"corporation":false,"usgs":true,"family":"Bianchi","given":"F.","email":"","affiliations":[],"preferred":false,"id":431554,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Walton-Day, Katherine 0000-0002-9146-6193 kwaltond@usgs.gov","orcid":"https://orcid.org/0000-0002-9146-6193","contributorId":1245,"corporation":false,"usgs":true,"family":"Walton-Day","given":"Katherine","email":"kwaltond@usgs.gov","affiliations":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"preferred":false,"id":431553,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Runkel, Robert L. 0000-0003-3220-481X runkel@usgs.gov","orcid":"https://orcid.org/0000-0003-3220-481X","contributorId":685,"corporation":false,"usgs":true,"family":"Runkel","given":"Robert","email":"runkel@usgs.gov","middleInitial":"L.","affiliations":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"preferred":true,"id":431558,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Nannucci, M.","contributorId":89350,"corporation":false,"usgs":true,"family":"Nannucci","given":"M.","email":"","affiliations":[],"preferred":false,"id":431557,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Salvadori, A.","contributorId":84980,"corporation":false,"usgs":true,"family":"Salvadori","given":"A.","email":"","affiliations":[],"preferred":false,"id":431555,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031452,"text":"70031452 - 2007 - A rangewide population genetic study of trumpeter swans","interactions":[],"lastModifiedDate":"2012-03-12T17:21:14","indexId":"70031452","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1324,"text":"Conservation Genetics","active":true,"publicationSubtype":{"id":10}},"title":"A rangewide population genetic study of trumpeter swans","docAbstract":"For management purposes, the range of naturally occurring trumpeter swans (Cygnus buccinator) has been divided into two populations, the Pacific Coast Population (PP) and the Rocky Mountain Population (RMP). Little is known about the distribution of genetic variation across the species' range despite increasing pressure to make difficult management decisions regarding the two populations and flocks within them. To address this issue, we used rapidly evolving genetic markers (mitochondrial DNA sequence and 17 nuclear microsatellite loci) to elucidate the underlying genetic structure of the species. Data from both markers revealed a significant difference between the PP and RMP with the Yukon Territory as a likely area of overlap. Additionally, we found that the two populations have somewhat similar levels of genetic diversity (PP is slightly higher) suggesting that the PP underwent a population bottleneck similar to a well-documented one in the RMP. Both genetic structure and diversity results reveal that the Tri-State flock, a suspected unique, non-migratory flock, is not genetically different from the Canadian flock of the RMP and need not be treated as a unique population from a genetic standpoint. Finally, trumpeter swans appear to have much lower mitochondrial DNA variability than other waterfowl studied thus far which may suggest a previous, species-wide bottleneck. ?? 2007 Springer Science+Business Media, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Conservation Genetics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10592-006-9282-y","issn":"15660621","usgsCitation":"Oyler-McCance, S., Ransler, F., Berkman, L., and Quinn, T., 2007, A rangewide population genetic study of trumpeter swans: Conservation Genetics, v. 8, no. 6, p. 1339-1353, https://doi.org/10.1007/s10592-006-9282-y.","startPage":"1339","endPage":"1353","numberOfPages":"15","costCenters":[],"links":[{"id":212469,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10592-006-9282-y"},{"id":239959,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"8","issue":"6","noUsgsAuthors":false,"publicationDate":"2007-02-09","publicationStatus":"PW","scienceBaseUri":"5059e52ae4b0c8380cd46b92","contributors":{"authors":[{"text":"Oyler-McCance, S.J.","contributorId":75877,"corporation":false,"usgs":true,"family":"Oyler-McCance","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":431551,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ransler, F.A.","contributorId":92034,"corporation":false,"usgs":true,"family":"Ransler","given":"F.A.","email":"","affiliations":[],"preferred":false,"id":431552,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Berkman, L.K.","contributorId":9862,"corporation":false,"usgs":true,"family":"Berkman","given":"L.K.","email":"","affiliations":[],"preferred":false,"id":431549,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Quinn, T.W.","contributorId":37285,"corporation":false,"usgs":true,"family":"Quinn","given":"T.W.","email":"","affiliations":[],"preferred":false,"id":431550,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
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