{"pageNumber":"632","pageRowStart":"15775","pageSize":"25","recordCount":69037,"records":[{"id":70044391,"text":"sir20135014 - 2013 - Evapotranspiration from marsh and open-water sites at Upper Klamath Lake, Oregon, 2008--2010","interactions":[],"lastModifiedDate":"2013-03-04T18:48:19","indexId":"sir20135014","displayToPublicDate":"2013-03-04T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2013-5014","title":"Evapotranspiration from marsh and open-water sites at Upper Klamath Lake, Oregon, 2008--2010","docAbstract":"Water allocation in the Upper Klamath Basin has become difficult in recent years due to the increase in occurrence of drought coupled with continued high water demand. Upper Klamath Lake is a central component of water distribution, supplying water downstream to the Klamath River, supplying water for irrigation diversions, and providing habitat for various species within the lake and surrounding wetlands. Evapotranspiration (ET) is a major component of the hydrologic budget of the lake and wetlands, and yet estimates of ET have been elusive—quantified only as part of a lumped term including other substantial water-budget components. To improve understanding of ET losses from the lake and wetlands, measurements of ET were made from May 2008 through September 2010. The eddy-covariance method was used to monitor ET at two wetland sites continuously during this study period and the Bowen-ratio energy-balance method was used to monitor open-water lake evaporation at two sites during the warmer months of the 3 study years. Vegetation at one wetland site (the bulrush site) consists of a virtual monoculture of hardstem bulrush (formerly Scirpus acutus, now Schoenoplectus acutus), and at the other site (the mixed site) consists of a mix of about 70 percent bulrush, 15 percent cattail (Typha latifolia), and 15 percent wocus (Nuphar polysepalum). Measured ET at these two sites was very similar (means were ±2.5 percent) and mean wetland ET is computed as a 70 to 30 percent weighted average of the bulrush and mixed sites, respectively, based on community-type distribution estimated from satellite imagery. Biweekly means of wetland ET typically vary from maximum values of around 6 to 7 millimeters per day during midsummer, to minimum values of less than 1 mm/d during midwinter. This strong annual signal primarily reflects life-cycle changes in the wetland vegetation, and the annual variation of radiative input to the surface and resulting temperature. The perennial vegetation begins each growing season submerged, emerges from the dead litter mat around late May or early June, reaches a maximum height of about 2.2 meters (m) during summer, senesces in October, and subsequently lodges over, contributing to the dead litter mat from previous years. Hydroperiods last about 5 to 6 months, typically beginning in January or February and ending in July or August, and have a minor influence on the annual ET cycle. These hydroperiods result from lake levels that typically vary about 1.3 m, from around 0.6 to 0.9 m above the wetland surface, to around 0.4 to 0.7 m below the wetland surface. An estimate of 3-year annual wetland ET, made by substituting early- and late-season data measured during 2009 for the missing periods in early 2008 and late 2010, is 0.938 meter per year (m/yr). Daily values of alfalfa-based reference ET (ET<sub>r</sub>) were retrieved from the Bureau of Reclamation AgriMet Web site (http://www.usbr.gov/pn/agrimet/index.html) and are aggregated into biweekly, annual, and 3-year values (for consistency, the 3-year values are also computed using substitute data from 2009 for early 2008 and late 2010). These ET<sub>r</sub> values are computed from weather data measured at the nearby Agency Lake weather station (AGKO), and are based on the assumption that the alfalfa crop is green and vigorous year-round. The 3-year value of ET<sub>r</sub> is 1.145 m/yr, about 22 percent greater than wetland ET. A comparison of 2008–2010 alfalfa and pasture growing season actual ET with wetland ET is made using data from the more distant Klamath Falls AgriMet weather station (KFLO) because actual alfalfa and pasture ET are not computed for the AGKO site. During the 190-day average alfalfa growing season, wetland ET (0.779 m) is about 7 percent less than alfalfa ET (0.838 m). During the 195-day average pasture growing season, wetland ET (0.789 m) is about 18 percent greater than pasture ET (0.671 m). Assuming alfalfa and pasture ET are equal to wetland ET during the non-growing season, annual estimates become 0.997 m, 0.938 m, and 0.820 m from alfalfa, wetland, and pasture, respectively. Wetland crop coefficients (K<sub>c</sub>=ET/ET<sub>r</sub>) are computed at daily, biweekly, and annual time steps. Approximate formulas are given to estimate daily values of growing season Kc, thereby allowing computation of daily growing season ET using ET<sub>r</sub> from the AGKO weather station. Biweekly values of growing season Kc are computed from ensemble average values of ET and ET<sub>r</sub> during the 3 study period growing seasons, and a single, mean Kc is computed for the non-growing season. Together, these provide relatively accurate estimates of biweekly ET during the study (RMSE=0.396 and 0.347 mm/d, r2 = 62 and 0.971 at the bulrush and mixed sites, respectively). A fourth-order polynomial fit of the biweekly growing season values to day of year provides a more automated form of ET computation. Measured ET at the bulrush wetland site during the current study compares very closely with growing-season ET estimated during a study in 1997 at nearly the same location. During the earlier study, ET was measured four times, using eddy covariance for 1- to 2-day periods, and was estimated between measurement periods using a Penman-Monteith model, calibrated to the measurements. Differences between time series of ET from the two studies are similar to interannual differences within the current study. Compared to the 1997 study, the current study measured larger ET rates in early summer and smaller rates in late summer, resulting in very similar growing-season totals. A study conducted in 2000 estimated ET from nearby fallowed cropland, using the Bowen-ratio energy balance method supplemented with Priestley-Taylor and crop-coefficient ET modeling. Seasonal timing of ET from three different crop types varied considerably, but growing-season totals were remarkably similar, at 0.435 ± 0.009 m. Wetland ET measured during the current study, evaluated over the same growing season was 0.718 m, or about 65 percent greater than the fallowed cropland ET. Open-water evaporation from Upper Klamath Lake was measured at two locations during the warmer months of 2008–2010 using the Bowen-ratio energy balance method. Measured rates were in general agreement with those measured in 2003 using the same method. Open-water evaporation and wetland ET were nearly equal during late June through early August, when wetland vegetation was green and abundant. As expected, open-water evaporation consistently exceeded wetland ET during late summer, as wetland ET responded to vegetation senescence while open water evaporation responded to extra available energy in the form of heat previously stored in the lake. Overall, open-water evaporation was 20 percent greater than wetland ET during the same period.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20135014","collaboration":"Prepared in cooperation with the Bureau of Reclamation.\r","usgsCitation":"Stannard, D.I., Gannett, M.W., Polette, D.J., Cameron, J.M., Waibel, M.S., and Spears, J.M., 2013, Evapotranspiration from marsh and open-water sites at Upper Klamath Lake, Oregon, 2008--2010: U.S. Geological Survey Scientific Investigations Report 2013-5014, viii, 65 p., https://doi.org/10.3133/sir20135014.","productDescription":"viii, 65 p.","startPage":"i","endPage":"65","numberOfPages":"78","additionalOnlineFiles":"N","costCenters":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"links":[{"id":268727,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir_2013_5014.jpg"},{"id":268725,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2013/5014/"},{"id":268726,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2013/5014/pdf/sir20135014.pdf"}],"country":"United States","state":"Oregon","otherGeospatial":"Klamath Lake","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124.61,42.0 ], [ -124.61,46.29 ], [ -116.46,46.29 ], [ -116.46,42.0 ], [ -124.61,42.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5135c269e4b03b8ec4025b28","contributors":{"authors":[{"text":"Stannard, David I. distanna@usgs.gov","contributorId":562,"corporation":false,"usgs":true,"family":"Stannard","given":"David","email":"distanna@usgs.gov","middleInitial":"I.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":false,"id":475502,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gannett, Marshall W. 0000-0003-2498-2427 mgannett@usgs.gov","orcid":"https://orcid.org/0000-0003-2498-2427","contributorId":2942,"corporation":false,"usgs":true,"family":"Gannett","given":"Marshall","email":"mgannett@usgs.gov","middleInitial":"W.","affiliations":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"preferred":true,"id":475504,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Polette, Danial J. dpolette@usgs.gov","contributorId":1100,"corporation":false,"usgs":true,"family":"Polette","given":"Danial","email":"dpolette@usgs.gov","middleInitial":"J.","affiliations":[],"preferred":true,"id":475503,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cameron, Jason M.","contributorId":71289,"corporation":false,"usgs":true,"family":"Cameron","given":"Jason","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":475506,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Waibel, M. Scott","contributorId":50795,"corporation":false,"usgs":true,"family":"Waibel","given":"M.","email":"","middleInitial":"Scott","affiliations":[],"preferred":false,"id":475505,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Spears, J. Mark","contributorId":81946,"corporation":false,"usgs":true,"family":"Spears","given":"J.","email":"","middleInitial":"Mark","affiliations":[],"preferred":false,"id":475507,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70044348,"text":"sir20125289 - 2013 - Simulation of the shallow groundwater-flow system in the Forest County Potawatomi Community, Forest County, Wisconsin","interactions":[],"lastModifiedDate":"2013-03-04T09:18:25","indexId":"sir20125289","displayToPublicDate":"2013-03-04T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2012-5289","title":"Simulation of the shallow groundwater-flow system in the Forest County Potawatomi Community, Forest County, Wisconsin","docAbstract":"The shallow groundwater system in the Forest County Potawatomi Comminity, Forest County, Wisconsin, was simulated by expanding and recalibrating a previously calibrated regional model. The existing model was updated using newly collected water-level measurements, inclusion of surface-water features beyond the previous near-field boundary, and refinements to surface-water features. The updated model then was used to calculate the area contributing recharge for seven existing and three proposed pumping locations on lands of the Forest County Potawatomi Community. The existing wells were the subject of a 2004 source-water evaluation in which areas contributing recharge were calculated using the fixed-radius method. The motivation for the present (2012) project was to improve the level of detail of areas contributing recharge for the existing wells and to provide similar analysis for the proposed wells. Delineated 5- and 10-year areas contributing recharge for existing and proposed wells extend from the areas of pumping to delineate the area at the surface contributing recharge to the wells. Steady-state pumping was simulated for two scenarios: a base-pumping scenario using pumping rates that reflect what the Community currently (2012) pumps (or plans to in the case of proposed wells), and a high-pumping scenario in which the rate was set to the maximum expected from wells installed in this area, according to the Forest County Potawatomi Community Natural Resources Department. In general, the 10-year areas contributing recharge did not intersect surface-water bodies. The 5- and 10-year areas contributing recharge simulated at the maximum pumping rate at Bug Lake Road may intersect Bug Lake. At the casino near the Town of Carter, Wisconsin, the 10-year areas contributing recharge intersect infiltration ponds. At the Devils Lake and Lois Crow Drive wells, areas contributing recharge are near cultural features, including residences.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20125289","collaboration":"Prepared in cooperation with the Forest County Potawatomi Community","usgsCitation":"Fienen, M., Saad, D.A., and Juckem, P.F., 2013, Simulation of the shallow groundwater-flow system in the Forest County Potawatomi Community, Forest County, Wisconsin: U.S. Geological Survey Scientific Investigations Report 2012-5289, vi, 24 p., https://doi.org/10.3133/sir20125289.","productDescription":"vi, 24 p.","numberOfPages":"34","onlineOnly":"Y","additionalOnlineFiles":"N","costCenters":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"links":[{"id":268700,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir_2012_5289.gif"},{"id":268698,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2012/5289/"},{"id":268699,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2012/5289/pdf/SIR2012-5289_web.pdf"}],"scale":"100000","country":"United States","state":"Wisconsin","county":"Forest","otherGeospatial":"Forest County Potawatomi Community;Lake Lucerne;Trump Lake;Lake Wabikon;Devils Lake;Lake Metonga","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -89.070282,45.12732 ], [ -89.070282,45.755068 ], [ -88.398743,45.755068 ], [ -88.398743,45.12732 ], [ -89.070282,45.12732 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5135c26be4b03b8ec4025b30","contributors":{"authors":[{"text":"Fienen, Michael N. 0000-0002-7756-4651 mnfienen@usgs.gov","orcid":"https://orcid.org/0000-0002-7756-4651","contributorId":893,"corporation":false,"usgs":true,"family":"Fienen","given":"Michael N.","email":"mnfienen@usgs.gov","affiliations":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":false,"id":475337,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Saad, David A. dasaad@usgs.gov","contributorId":121,"corporation":false,"usgs":true,"family":"Saad","given":"David","email":"dasaad@usgs.gov","middleInitial":"A.","affiliations":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":true,"id":475336,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Juckem, Paul F. 0000-0002-3613-1761 pfjuckem@usgs.gov","orcid":"https://orcid.org/0000-0002-3613-1761","contributorId":1905,"corporation":false,"usgs":true,"family":"Juckem","given":"Paul","email":"pfjuckem@usgs.gov","middleInitial":"F.","affiliations":[{"id":37947,"text":"Upper Midwest Water Science Center","active":true,"usgs":true},{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":true,"id":475338,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70041953,"text":"70041953 - 2013 - Owyhee River intracanyon lava flows: does the river give a dam?","interactions":[],"lastModifiedDate":"2019-05-30T12:12:05","indexId":"70041953","displayToPublicDate":"2013-03-04T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1723,"text":"GSA Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Owyhee River intracanyon lava flows: does the river give a dam?","docAbstract":"Rivers carved into uplifted plateaus are commonly disrupted by discrete events from the surrounding landscape, such as lava flows or large mass movements. These disruptions are independent of slope, basin area, or channel discharge, and can dominate aspects of valley morphology and channel behavior for many kilometers. We document and assess the effects of one type of disruptive event, lava dams, on river valley morphology and incision rates at a variety of time scales, using examples from the Owyhee River in southeastern Oregon. Six sets of basaltic lava flows entered and dammed the river canyon during two periods in the late Cenozoic ca. 2 Ma–780 ka and 250–70 ka. The dams are strongly asymmetric, with steep, blunt escarpments facing up valley and long, low slopes down valley. None of the dams shows evidence of catastrophic failure; all blocked the river and diverted water over or around the dam crest. The net effect of the dams was therefore to inhibit rather than promote incision. Once incision resumed, most of the intracanyon flows were incised relatively rapidly and therefore did not exert a lasting impact on the river valley profile over time scales >10<sup>6</sup> yr. The net long-term incision rate from the time of the oldest documented lava dam, the Bogus Rim lava dam (≤1.7 Ma), to present was 0.18 mm/yr, but incision rates through or around individual lava dams were up to an order of magnitude greater. At least three lava dams (Bogus Rim, Saddle Butte, and West Crater) show evidence that incision initiated only after the impounded lakes filled completely with sediment and there was gravel transport across the dams. The most recent lava dam, formed by the West Crater lava flow around 70 ka, persisted for at least 25 k.y. before incision began, and the dam was largely removed within another 35 k.y. The time scale over which the lava dams inhibit incision is therefore directly affected by both the volume of lava forming the dam and the time required for sediment to fill the blocked valley. Variations in this primary process of incision through the lava dams could be influenced by additional independent factors such as regional uplift, drainage integration, or climate that affect the relative base level, discharge, and sediment yield within the watershed. By redirecting the river, tributaries, and subsequent lava flows to different parts of the canyon, lava dams create a distinct valley morphology of flat, broad basalt shelves capping steep cliffs of Tertiary sediment. This stratigraphy is conducive to landsliding and extends the effects of intracanyon lava flows on channel geomorphology beyond the lifetime of the dams.","language":"English","publisher":"GSA","publisherLocation":"Boulder, CO","doi":"10.1130/B30574.1","usgsCitation":"Ely, L.L., Brossy, C.C., House, P.K., Safran, E.B., O'Connor, J., Champion, D.E., Fenton, C.R., Bondre, N.R., Orem, C.A., Grant, G., Henry, C., and Turrin, B., 2013, Owyhee River intracanyon lava flows: does the river give a dam?: GSA Bulletin, v. 124, no. 11-12, p. 1667-1687, https://doi.org/10.1130/B30574.1.","productDescription":"21 p.","startPage":"1667","endPage":"1687","ipdsId":"IP-030638","costCenters":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":268716,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Oregon","otherGeospatial":"Owyhee River","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124.61,42.0 ], [ -124.61,46.29 ], [ -116.46,46.29 ], [ -116.46,42.0 ], [ -124.61,42.0 ] ] ] } } ] }","volume":"124","issue":"11-12","noUsgsAuthors":false,"publicationDate":"2012-10-02","publicationStatus":"PW","scienceBaseUri":"5135c26ae4b03b8ec4025b2c","contributors":{"authors":[{"text":"Ely, Lisa L.","contributorId":19854,"corporation":false,"usgs":true,"family":"Ely","given":"Lisa","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":470470,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brossy, Cooper C.","contributorId":10303,"corporation":false,"usgs":true,"family":"Brossy","given":"Cooper","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":470468,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"House, P. Kyle","contributorId":60374,"corporation":false,"usgs":true,"family":"House","given":"P.","email":"","middleInitial":"Kyle","affiliations":[],"preferred":false,"id":470475,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Safran, Elizabeth B.","contributorId":10694,"corporation":false,"usgs":true,"family":"Safran","given":"Elizabeth","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":470469,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"O'Connor, Jim E. 0000-0002-7928-5883 oconnor@usgs.gov","orcid":"https://orcid.org/0000-0002-7928-5883","contributorId":140771,"corporation":false,"usgs":true,"family":"O'Connor","given":"Jim E.","email":"oconnor@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true},{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"preferred":false,"id":470471,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Champion, Duane E. 0000-0001-7854-9034 dchamp@usgs.gov","orcid":"https://orcid.org/0000-0001-7854-9034","contributorId":2912,"corporation":false,"usgs":true,"family":"Champion","given":"Duane","email":"dchamp@usgs.gov","middleInitial":"E.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":470466,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Fenton, Cassandra R.","contributorId":58915,"corporation":false,"usgs":true,"family":"Fenton","given":"Cassandra","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":470474,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Bondre, Ninad R.","contributorId":7152,"corporation":false,"usgs":true,"family":"Bondre","given":"Ninad","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":470467,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Orem, Caitlin A.","contributorId":60926,"corporation":false,"usgs":true,"family":"Orem","given":"Caitlin","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":470476,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Grant, Gordon E.","contributorId":30881,"corporation":false,"usgs":false,"family":"Grant","given":"Gordon E.","affiliations":[{"id":12647,"text":"U.S. Forest Service, Pacific Northwest Research Station","active":true,"usgs":false}],"preferred":false,"id":470472,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Henry, Christopher D.","contributorId":36556,"corporation":false,"usgs":true,"family":"Henry","given":"Christopher D.","affiliations":[],"preferred":false,"id":470473,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Turrin, Brent D.","contributorId":89867,"corporation":false,"usgs":true,"family":"Turrin","given":"Brent D.","affiliations":[],"preferred":false,"id":470477,"contributorType":{"id":1,"text":"Authors"},"rank":12}]}}
,{"id":70044796,"text":"70044796 - 2013 - Novel and non-traditional use of stable isotope tracers to study metal bioavailability from natural particles","interactions":[],"lastModifiedDate":"2013-04-29T10:53:03","indexId":"70044796","displayToPublicDate":"2013-03-04T00:00:00","publicationYear":"2013","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":"Novel and non-traditional use of stable isotope tracers to study metal bioavailability from natural particles","docAbstract":"We devised a novel tracing approach that involves enriching test organisms with a stable metal isotope of low natural abundance prior to characterizing metal bioavailability from natural inorganic particles. In addition to circumventing uncertainties associated with labeling natural particles and distinguishing background metals, the proposed \"reverse labeling\" technique overcomes many drawbacks inherent to using radioisotope tracers. Specifically, we chronically exposed freshwater snails (Lymnaea stagnalis) to synthetic water spiked with Cu that was 99.4% <sup>65</sup>Cu to increase the relative abundance of <sup>65</sup>Cu in the snail’s tissues from 32% to >80%. The isotopically enriched snails were then exposed to benthic algae mixed with Cu-bearing Fe–Al particles collected from the Animas River (Colorado), an acid mine drainage impacted river. We used <sup>63</sup>Cu to trace Cu uptake from the natural particles and inferred their bioavailability from calculation of Cu assimilation into tissues. Cu assimilation from these particles was 44%, indicating that 44% of the particulate Cu was absorbed by the invertebrate. This demonstrates that inorganic particulate Cu can be bioavailable. The reverse labeling approach shows great potential in various scientific areas such as environmental contamination and nutrition for addressing questions involving uptake of an element that naturally has multiple isotopes.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Science and Technology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"ACS Publications (American Chemical Society)","doi":"10.1021/es400162f","usgsCitation":"Croteau, M., Cain, D.J., and Fuller, C.C., 2013, Novel and non-traditional use of stable isotope tracers to study metal bioavailability from natural particles: Environmental Science & Technology, v. 47, no. 7, p. 3424-3431, https://doi.org/10.1021/es400162f.","productDescription":"8 p.","startPage":"3424","endPage":"3431","numberOfPages":"8","ipdsId":"IP-044147","costCenters":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"links":[{"id":271606,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":271605,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es400162f"}],"volume":"47","issue":"7","noUsgsAuthors":false,"publicationDate":"2013-03-18","publicationStatus":"PW","scienceBaseUri":"517f966ce4b0e41721f7a377","contributors":{"authors":[{"text":"Croteau, Marie-Noële","contributorId":22863,"corporation":false,"usgs":true,"family":"Croteau","given":"Marie-Noële","affiliations":[],"preferred":false,"id":476329,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cain, Daniel J. 0000-0002-3443-0493 djcain@usgs.gov","orcid":"https://orcid.org/0000-0002-3443-0493","contributorId":1784,"corporation":false,"usgs":true,"family":"Cain","given":"Daniel","email":"djcain@usgs.gov","middleInitial":"J.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":476327,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fuller, Christopher C. 0000-0002-2354-8074 ccfuller@usgs.gov","orcid":"https://orcid.org/0000-0002-2354-8074","contributorId":1831,"corporation":false,"usgs":true,"family":"Fuller","given":"Christopher","email":"ccfuller@usgs.gov","middleInitial":"C.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":476328,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70156424,"text":"70156424 - 2013 - Arsenic induced toxicity in broiler chicks and its alleviation with ascorbic acid: a toxico-patho-biochemical study","interactions":[],"lastModifiedDate":"2015-09-16T11:04:14","indexId":"70156424","displayToPublicDate":"2013-03-03T11:15:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2026,"text":"International Journal of Agriculture & Biology","active":true,"publicationSubtype":{"id":10}},"title":"Arsenic induced toxicity in broiler chicks and its alleviation with ascorbic acid: a toxico-patho-biochemical study","docAbstract":"<p>To find out toxico-pathological effects of arsenic (As) and ameliorating effect of ascorbic acid (Vit C), broilers birds were administered 50 and 250 mg/kg arsenic and Vit C, respectively alone/in combination. As-treated birds exhibited severe signs of toxicity such as dullness, depression, increased thirst, open mouth breathing and watery diarrhea. All these signs were partially ameliorated with the treatment of Vit C. As-treated birds showed a significant decrease in serum total proteins while serum enzymes, urea and creatinine were significantly increased. Alkaline phosphatase and lactate dehydrogenase completely whereas proteins, aspartate aminotransferase (AST), alanine aminotransferase (ALT), urea and creatinine were partial ameliorated in birds treated with As+Vit C as compared to As-treated and control birds. Pale and hemorrhagic liver and swollen kidneys were observed in As-treated birds. Histopathologically, liver exhibited congestion and cytoplasmic vacuolation while in kidneys, condensation of tubular epithelium nuclei, epithelial necrosis, increased urinary spaces, sloughing of tubules from basement membrane and cast deposition were observed in As-treated birds. Pathological lesions were partially ameliorated with the treatment of Vit C. It can be concluded that arsenic induces biochemical and histopathological alterations in broiler birds; however, these toxic effects can be partially attenuated by Vit C.</p>","language":"English","publisher":"Friends Science Publishers","publisherLocation":"Faisalabad, Pakistan","usgsCitation":"Khan, A., Sharaf, R., Khan, M.Z., Saleemi, M.K., and Mahmood, F., 2013, Arsenic induced toxicity in broiler chicks and its alleviation with ascorbic acid: a toxico-patho-biochemical study: International Journal of Agriculture & Biology, v. 15, no. 6, p. 1105-1111.","productDescription":"7 p.","startPage":"1105","endPage":"1111","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":307523,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":308189,"type":{"id":15,"text":"Index Page"},"url":"https://www.fspublishers.org/Issue.php?categoryID=118"}],"volume":"15","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55dee32ce4b0518e354e07fa","contributors":{"authors":[{"text":"Khan, Ahrar","contributorId":146836,"corporation":false,"usgs":false,"family":"Khan","given":"Ahrar","email":"","affiliations":[],"preferred":false,"id":569118,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sharaf, Rabia","contributorId":146835,"corporation":false,"usgs":false,"family":"Sharaf","given":"Rabia","email":"","affiliations":[],"preferred":false,"id":569117,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Khan, Muhammad Zargham","contributorId":146837,"corporation":false,"usgs":false,"family":"Khan","given":"Muhammad","email":"","middleInitial":"Zargham","affiliations":[],"preferred":false,"id":569119,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Saleemi, Muhammad Kashif","contributorId":146842,"corporation":false,"usgs":false,"family":"Saleemi","given":"Muhammad","email":"","middleInitial":"Kashif","affiliations":[],"preferred":false,"id":569124,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Mahmood, Fazal","contributorId":146841,"corporation":false,"usgs":false,"family":"Mahmood","given":"Fazal","email":"","affiliations":[],"preferred":false,"id":569123,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70118892,"text":"70118892 - 2013 - Characterization and simulation of fate and transport of selected volatile organic compounds in the vicinities of the Hadnot Point Industrial Area and landfill","interactions":[],"lastModifiedDate":"2022-12-29T17:07:50.146422","indexId":"70118892","displayToPublicDate":"2013-03-01T14:57:00","publicationYear":"2013","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"chapter":"A","subchapterNumber":"Supplement 6","title":"Characterization and simulation of fate and transport of selected volatile organic compounds in the vicinities of the Hadnot Point Industrial Area and landfill","docAbstract":"<p>This supplement of Chapter A (Supplement 6) describes the reconstruction (i.e. simulation) of historical concentrations of tetrachloroethylene (PCE), trichloroethylene (TCE), and benzene<sup>3</sup> in production wells supplying water to the Hadnot Base (USMCB) Camp Lejeune, North Carolina (Figure S6.1). A fate and transport model (i.e., MT3DMS [Zheng and Wang 1999]) was used to simulate contaminant migration from source locations through the groundwater system and to estimate mean contaminant concentrations in water withdrawn from water-supply wells in the vicinity of the Hadnot Point Industrial Area (HPIA) and the Hadnot Point landfill (HPLF) area.<sup>4</sup> The reconstructed contaminant concentrations were subsequently input into a flow-weighted, materials mass balance (mixing) model (Masters 1998) to estimate monthly mean concentrations of the contaminant in finished water <sup>5</sup> at the HPWTP (Maslia et al. 2013). The calibrated fate and transport models described herein were based on and used groundwater velocities derived from groundwater-flow models that are described in Suárez-Soto et al. (2013). Information data pertinent to historical operations of water-supply wells are described in Sautner et al. (2013) and Telci et al. (2013).</p>","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Analyses and historical reconstruction of groundwater flow, contaminant fate and transport, and distribution of drinking water within the service areas of the Hadnot Point and Holcomb Boulevard Water Treatment Plants and vicinities, U.S. Marine Corps Base Camp Lejeune, North Carolina","largerWorkSubtype":{"id":1,"text":"Federal Government Series"},"language":"English","publisher":"Agency for Toxic Substances and Disease Registry","publisherLocation":"Atlanta, GA","usgsCitation":"Jones, L.E., Suárez-Soto, R., Anderson, B.A., and Maslia, M.L., 2013, Characterization and simulation of fate and transport of selected volatile organic compounds in the vicinities of the Hadnot Point Industrial Area and landfill, vii, 64 p.","productDescription":"vii, 64 p.","numberOfPages":"75","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-044282","costCenters":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":291728,"rank":3,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":325116,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.atsdr.cdc.gov/sites/lejeune/hadnotpoint.html"},{"id":325117,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://www.atsdr.cdc.gov/sites/lejeune/docs/Chapter_A_Supplement_6.pdf","text":"Report","size":"11.5 MB","linkFileType":{"id":1,"text":"pdf"},"description":"Report"}],"country":"United States","state":"North Carolina","otherGeospatial":"Hadnot Point, Holcomb Boulevard, U.S. Marine Corps Base Camp Lejeune","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -77.402008,34.622061 ], [ -77.402008,34.747972 ], [ -77.251546,34.747972 ], [ -77.251546,34.622061 ], [ -77.402008,34.622061 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53e1efc9e4b0fe532be2ddfa","contributors":{"authors":[{"text":"Jones, L. Elliott 0000-0002-7394-2053 lejones@usgs.gov","orcid":"https://orcid.org/0000-0002-7394-2053","contributorId":44569,"corporation":false,"usgs":true,"family":"Jones","given":"L.","email":"lejones@usgs.gov","middleInitial":"Elliott","affiliations":[],"preferred":false,"id":497342,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Suárez-Soto, René J.","contributorId":11101,"corporation":false,"usgs":true,"family":"Suárez-Soto","given":"René J.","affiliations":[],"preferred":false,"id":497341,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Anderson, Barbara A.","contributorId":67810,"corporation":false,"usgs":true,"family":"Anderson","given":"Barbara","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":497343,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Maslia, Morris L.","contributorId":71952,"corporation":false,"usgs":true,"family":"Maslia","given":"Morris","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":497344,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70045676,"text":"70045676 - 2013 - Modeling lahar behavior and hazards","interactions":[],"lastModifiedDate":"2013-07-31T14:57:41","indexId":"70045676","displayToPublicDate":"2013-03-01T14:47:00","publicationYear":"2013","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Modeling lahar behavior and hazards","docAbstract":"Lahars are highly mobile mixtures of water and sediment of volcanic origin that are capable of traveling tens to &gt; 100 km at speeds exceeding tens of km hr-1. Such flows are among the most serious ground-based hazards at many volcanoes because of their sudden onset, rapid advance rates, long runout distances, high energy, ability to transport large volumes of material, and tendency to flow along existing river channels where populations and infrastructure are commonly concentrated. They can grow in volume and peak discharge through erosion and incorporation of external sediment and/or water, inundate broad areas, and leave deposits many meters thick. Furthermore, lahars can recur for many years to decades after an initial volcanic eruption, as fresh pyroclastic material is eroded and redeposited during rainfall events, resulting in a spatially and temporally evolving hazard. Improving understanding of the behavior of these complex, gravitationally driven, multi-phase flows is key to mitigating the threat to communities at lahar-prone volcanoes. However, their complexity and evolving nature pose significant challenges to developing the models of flow behavior required for delineating their hazards and hazard zones.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Modeling volcanic processes: the physics and mathematics of volcanism","largerWorkSubtype":{"id":4,"text":"Other Government Series"},"language":"English","publisher":"Cambridge University Press","publisherLocation":"Cambridge","doi":"10.1017/CBO9781139021562.014","isbn":"9781139021562; 9780521895439","usgsCitation":"Manville, V., Major, J.J., and Fagents, S.A., 2013, Modeling lahar behavior and hazards, chap. <i>of</i> Modeling volcanic processes: the physics and mathematics of volcanism, p. 300-330, https://doi.org/10.1017/CBO9781139021562.014.","productDescription":"31 p.","startPage":"300","endPage":"330","numberOfPages":"31","ipdsId":"IP-035264","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":275639,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":275638,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1017/CBO9781139021562.014"}],"country":"United States","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"51fa31e5e4b076c3a8d8265a","contributors":{"authors":[{"text":"Manville, Vernon","contributorId":70272,"corporation":false,"usgs":true,"family":"Manville","given":"Vernon","email":"","affiliations":[],"preferred":false,"id":478035,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Major, Jon J. 0000-0003-2449-4466 jjmajor@usgs.gov","orcid":"https://orcid.org/0000-0003-2449-4466","contributorId":439,"corporation":false,"usgs":true,"family":"Major","given":"Jon","email":"jjmajor@usgs.gov","middleInitial":"J.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":478033,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fagents, Sarah A.","contributorId":66152,"corporation":false,"usgs":true,"family":"Fagents","given":"Sarah","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":478034,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70199860,"text":"70199860 - 2013 - Uncertainty in assessing the impacts of global change with coupled dynamic species distribution and population models","interactions":[],"lastModifiedDate":"2018-10-01T14:42:03","indexId":"70199860","displayToPublicDate":"2013-03-01T14:41:55","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1837,"text":"Global Change Biology","active":true,"publicationSubtype":{"id":10}},"title":"Uncertainty in assessing the impacts of global change with coupled dynamic species distribution and population models","docAbstract":"<p><span>Concern over rapid global changes and the potential for interactions among multiple threats are prompting scientists to combine multiple modelling approaches to understand impacts on biodiversity. A relatively recent development is the combination of species distribution models, land‐use change predictions, and dynamic population models to predict the relative and combined impacts of climate change, land‐use change, and altered disturbance regimes on species' extinction risk. Each modelling component introduces its own source of uncertainty through different parameters and assumptions, which, when combined, can result in compounded uncertainty that can have major implications for management. Although some uncertainty analyses have been conducted separately on various model components – such as climate predictions, species distribution models, land‐use change predictions, and population models – a unified sensitivity analysis comparing various sources of uncertainty in combined modelling approaches is needed to identify the most influential and problematic assumptions. We estimated the sensitivities of long‐run population predictions to different ecological assumptions and parameter settings for a rare and endangered annual plant species (</span><i>Acanthomintha ilicifolia</i><span>, or San Diego thornmint). Uncertainty about habitat suitability predictions, due to the choice of species distribution model, contributed most to variation in predictions about long‐run populations.</span></p>","language":"English","publisher":"Wiley","doi":"10.1111/gcb.12090","usgsCitation":"Conlisk, E., Syphard, A.D., Franklin, J., Flint, L.E., Flint, A.L., and Regan, H., 2013, Uncertainty in assessing the impacts of global change with coupled dynamic species distribution and population models: Global Change Biology, v. 19, no. 3, p. 858-869, https://doi.org/10.1111/gcb.12090.","productDescription":"12 p.","startPage":"858","endPage":"869","ipdsId":"IP-041945","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":357971,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -117.9876708984375,\n              32.537551746769\n            ],\n            [\n              -116.08154296875001,\n              32.537551746769\n            ],\n            [\n              -116.08154296875001,\n              33.99347299511967\n            ],\n            [\n              -117.9876708984375,\n              33.99347299511967\n            ],\n            [\n              -117.9876708984375,\n              32.537551746769\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"19","issue":"3","publishingServiceCenter":{"id":1,"text":"Sacramento PSC"},"noUsgsAuthors":false,"publicationDate":"2012-12-31","publicationStatus":"PW","scienceBaseUri":"5c10ba92e4b034bf6a7ee117","contributors":{"authors":[{"text":"Conlisk, Erin","contributorId":149404,"corporation":false,"usgs":false,"family":"Conlisk","given":"Erin","affiliations":[{"id":6609,"text":"UC Berkeley","active":true,"usgs":false}],"preferred":false,"id":746946,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Syphard, Alexandra D.","contributorId":8977,"corporation":false,"usgs":false,"family":"Syphard","given":"Alexandra","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":746945,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Franklin, Janet","contributorId":192373,"corporation":false,"usgs":false,"family":"Franklin","given":"Janet","affiliations":[],"preferred":false,"id":746948,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Flint, Lorraine E. 0000-0002-7868-441X lflint@usgs.gov","orcid":"https://orcid.org/0000-0002-7868-441X","contributorId":1184,"corporation":false,"usgs":true,"family":"Flint","given":"Lorraine","email":"lflint@usgs.gov","middleInitial":"E.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":746944,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Flint, Alan L. 0000-0002-5118-751X aflint@usgs.gov","orcid":"https://orcid.org/0000-0002-5118-751X","contributorId":1492,"corporation":false,"usgs":true,"family":"Flint","given":"Alan","email":"aflint@usgs.gov","middleInitial":"L.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":657,"text":"Western Geographic Science Center","active":true,"usgs":true}],"preferred":true,"id":746943,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Regan, Helen","contributorId":172483,"corporation":false,"usgs":false,"family":"Regan","given":"Helen","affiliations":[],"preferred":false,"id":746947,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70199972,"text":"70199972 - 2013 - SedPods: a low-cost coral proxy for measuring net sedimentation","interactions":[],"lastModifiedDate":"2018-10-09T14:39:58","indexId":"70199972","displayToPublicDate":"2013-03-01T14:39:46","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1338,"text":"Coral Reefs","active":true,"publicationSubtype":{"id":10}},"title":"SedPods: a low-cost coral proxy for measuring net sedimentation","docAbstract":"<p><span>Sediment derived from impaired watersheds is a major stressor to adjacent coral reefs globally. To better understand stresses generated by specific processes and events, many coral reef scientists seek to collect physical samples of settling particles and obtain reproducible information about net rates of sediment accumulation on coral reefs. Yet, the tools most commonly used to gather this information, sediment tube traps, only provide information on the gross accumulation of sediment at a site, in that all particles are effectively trapped within the container, unlike what a coral surface experiences. To address the need for an improved measurement of net particle accumulation on coral surfaces, we propose using recoverable sediment pods (SedPods) that can be constructed from readily available materials for under US $20. These devices are inexpensive, easy to fabricate, and allow for capture of particles over a given time span. The particles can then be used for laboratory analysis and accurate calculation of net accumulation rates on a coral surface proxy. In an experiment in Hanalei Bay, HI, we found that net sediment accumulation on rectangular SedPods was an order of magnitude less than gross accumulation in nearby conventional tube traps.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s00338-012-0953-5","usgsCitation":"Field, M.E., Chezar, H., and Storlazzi, C.D., 2013, SedPods: a low-cost coral proxy for measuring net sedimentation: Coral Reefs, v. 32, no. 1, p. 155-159, https://doi.org/10.1007/s00338-012-0953-5.","productDescription":"5 p.","startPage":"155","endPage":"159","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":358211,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"32","issue":"1","noUsgsAuthors":false,"publicationDate":"2012-09-12","publicationStatus":"PW","scienceBaseUri":"5c10ba93e4b034bf6a7ee119","contributors":{"authors":[{"text":"Field, Michael E. mfield@usgs.gov","contributorId":2101,"corporation":false,"usgs":true,"family":"Field","given":"Michael","email":"mfield@usgs.gov","middleInitial":"E.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":747543,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chezar, Henry hchezar@usgs.gov","contributorId":2964,"corporation":false,"usgs":true,"family":"Chezar","given":"Henry","email":"hchezar@usgs.gov","affiliations":[],"preferred":true,"id":747544,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Storlazzi, Curt D. 0000-0001-8057-4490 cstorlazzi@usgs.gov","orcid":"https://orcid.org/0000-0001-8057-4490","contributorId":140584,"corporation":false,"usgs":true,"family":"Storlazzi","given":"Curt","email":"cstorlazzi@usgs.gov","middleInitial":"D.","affiliations":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":747545,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70093206,"text":"70093206 - 2013 - Application and evaluation of electromagnetic methods for imaging saltwater intrusion in coastal aquifers: Seaside Groundwater Basin, California","interactions":[],"lastModifiedDate":"2023-06-05T15:29:38.903757","indexId":"70093206","displayToPublicDate":"2013-03-01T13:21:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1808,"text":"Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"Application and evaluation of electromagnetic methods for imaging saltwater intrusion in coastal aquifers: Seaside Groundwater Basin, California","docAbstract":"Developing effective resource management strategies to limit or prevent saltwater intrusion as a result of increasing demands on coastal groundwater resources requires reliable information about the geologic structure and hydrologic state of an aquifer system. A common strategy for acquiring such information is to drill sentinel wells near the coast to monitor changes in water salinity with time. However, installation and operation of sentinel wells is costly and provides limited spatial coverage. We studied the use of noninvasive electromagnetic (EM) geophysical methods as an alternative to installation of monitoring wells for characterizing coastal aquifers. We tested the feasibility of using EM methods at a field site in northern California to identify the potential for and/or presence of hydraulic communication between an unconfined saline aquifer and a confined freshwater aquifer. One-dimensional soundings were acquired using the time-domain electromagnetic (TDEM) and audiomagnetotelluric (AMT) methods. We compared inverted resistivity models of TDEM and AMT data obtained from several inversion algorithms. We found that multiple interpretations of inverted models can be supported by the same data set, but that there were consistencies between all data sets and inversion algorithms. Results from all collected data sets suggested that EM methods are capable of reliably identifying a saltwater-saturated zone in the unconfined aquifer. Geophysical data indicated that the impermeable clay between aquifers may be more continuous than is supported by current models.","language":"English","publisher":"Society of Exploration Geophysics","doi":"10.1190/geo2012-0004.1","usgsCitation":"Nenna, V., Herckenrather, D., Knight, R., Odlum, N., and McPhee, D., 2013, Application and evaluation of electromagnetic methods for imaging saltwater intrusion in coastal aquifers: Seaside Groundwater Basin, California: Geophysics, v. 78, no. 2, p. B77-B88, https://doi.org/10.1190/geo2012-0004.1.","productDescription":"12 p.","startPage":"B77","endPage":"B88","numberOfPages":"12","ipdsId":"IP-038194","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":282025,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Fort Ord Dunes State Park, Seaside Groundwater Basin","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -121.830556,36.629722 ], [ -121.830556,36.8 ], [ -121.7,36.8 ], [ -121.7,36.629722 ], [ -121.830556,36.629722 ] ] ] } } ] }","volume":"78","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd4d8fe4b0b290850f18f2","contributors":{"authors":[{"text":"Nenna, Vanessa","contributorId":101982,"corporation":false,"usgs":true,"family":"Nenna","given":"Vanessa","email":"","affiliations":[],"preferred":false,"id":489978,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Herckenrather, Daan","contributorId":69469,"corporation":false,"usgs":true,"family":"Herckenrather","given":"Daan","email":"","affiliations":[],"preferred":false,"id":489975,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Knight, Rosemary","contributorId":84245,"corporation":false,"usgs":true,"family":"Knight","given":"Rosemary","email":"","affiliations":[],"preferred":false,"id":489977,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Odlum, Nick","contributorId":108390,"corporation":false,"usgs":true,"family":"Odlum","given":"Nick","email":"","affiliations":[],"preferred":false,"id":489979,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"McPhee, Darcy","contributorId":75848,"corporation":false,"usgs":true,"family":"McPhee","given":"Darcy","affiliations":[],"preferred":false,"id":489976,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70138531,"text":"70138531 - 2013 - Raman spectroscopy of efflorescent sulfate salts from Iron Mountain Mine Superfund Site, California","interactions":[],"lastModifiedDate":"2015-01-19T11:14:06","indexId":"70138531","displayToPublicDate":"2013-03-01T11:15:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":912,"text":"Astrobiology","active":true,"publicationSubtype":{"id":10}},"title":"Raman spectroscopy of efflorescent sulfate salts from Iron Mountain Mine Superfund Site, California","docAbstract":"<p>The Iron Mountain Mine Superfund Site near Redding, California, is a massive sulfide ore deposit that was mined for iron, silver, gold, copper, zinc, and pyrite intermittently for nearly 100 years. As a result, both water and air reached the sulfide deposits deep within the mountain, producing acid mine drainage consisting of sulfuric acid and heavy metals from the ore. Particularly, the drainage water from the Richmond Mine at Iron Mountain is among the most acidic waters naturally found on Earth. The mineralogy at Iron Mountain can serve as a proxy for understanding sulfate formation on Mars. Selected sulfate efflorescent salts from Iron Mountain, formed from extremely acidic waters via drainage from sulfide mining, have been characterized by means of Raman spectroscopy. Gypsum, ferricopiapite, copiapite, melanterite, coquimbite, and voltaite are found within the samples. This work has implications for Mars mineralogical and geochemical investigations as well as for terrestrial environmental investigations related to acid mine drainage contamination.</p>","language":"English","publisher":"Mary Ann Liebert, Inc.","publisherLocation":"Larchmont, NY","doi":"10.1089/ast.2012.0908","collaboration":"U.S. Environmental Protection Agency","usgsCitation":"Sobron, P., and Alpers, C.N., 2013, Raman spectroscopy of efflorescent sulfate salts from Iron Mountain Mine Superfund Site, California: Astrobiology, v. 13, no. 3, p. 270-278, https://doi.org/10.1089/ast.2012.0908.","productDescription":"9 p.","startPage":"270","endPage":"278","numberOfPages":"9","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-010021","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":297377,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":297364,"type":{"id":15,"text":"Index Page"},"url":"https://online.liebertpub.com/doi/abs/10.1089/ast.2012.0908"}],"country":"United States","state":"California","volume":"13","issue":"3","publishingServiceCenter":{"id":1,"text":"Sacramento PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"54dd2c3fe4b08de9379b36d4","contributors":{"authors":[{"text":"Sobron, Pablo","contributorId":119593,"corporation":false,"usgs":true,"family":"Sobron","given":"Pablo","email":"","affiliations":[],"preferred":false,"id":538798,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Alpers, Charles N. 0000-0001-6945-7365 cnalpers@usgs.gov","orcid":"https://orcid.org/0000-0001-6945-7365","contributorId":411,"corporation":false,"usgs":true,"family":"Alpers","given":"Charles","email":"cnalpers@usgs.gov","middleInitial":"N.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":538797,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70047907,"text":"70047907 - 2013 - Drought, deluge and declines: the impact of precipitation extremes on amphibians in a changing climate","interactions":[],"lastModifiedDate":"2014-09-18T14:18:01","indexId":"70047907","displayToPublicDate":"2013-03-01T11:12:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1026,"text":"Biology","active":true,"publicationSubtype":{"id":10}},"title":"Drought, deluge and declines: the impact of precipitation extremes on amphibians in a changing climate","docAbstract":"The Class Amphibia is one of the most severely impacted taxa in an on-going global biodiversity crisis. Because amphibian reproduction is tightly associated with the presence of water, climatic changes that affect water availability pose a particularly menacing threat to both aquatic and terrestrial-breeding amphibians. We explore the impacts that one facet of climate change—that of extreme variation in precipitation—may have on amphibians. This variation is manifested principally as increases in the incidence and severity of both drought and major storm events. We stress the need to consider not only total precipitation amounts but also the pattern and timing of rainfall events. Such rainfall “pulses” are likely to become increasingly more influential on amphibians, especially in relation to seasonal reproduction. Changes in reproductive phenology can strongly influence the outcome of competitive and predatory interactions, thus potentially altering community dynamics in assemblages of co-existing species. We present a conceptual model to illustrate possible landscape and metapopulation consequences of alternative climate change scenarios for pond-breeding amphibians, using the Mole Salamander, <i>Ambystoma talpoideum</i>, as an example. Although amphibians have evolved a variety of life history strategies that enable them to cope with environmental uncertainty, it is unclear whether adaptations can keep pace with the escalating rate of climate change. Climate change, especially in combination with other stressors, is a daunting challenge for the persistence of amphibians and, thus, the conservation of global biodiversity.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"MDPI AG","publisherLocation":"Basel, Switzerland","doi":"10.3390/biology2010399","usgsCitation":"Walls, S., Barichivich, W.J., and Brown, M.E., 2013, Drought, deluge and declines: the impact of precipitation extremes on amphibians in a changing climate: Biology, v. 2, no. 1, p. 399-418, https://doi.org/10.3390/biology2010399.","productDescription":"20 p.","startPage":"399","endPage":"418","numberOfPages":"20","ipdsId":"IP-041780","costCenters":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"links":[{"id":473931,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3390/biology2010399","text":"Publisher Index Page"},{"id":277187,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":277186,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3390/biology2010399"}],"volume":"2","issue":"1","noUsgsAuthors":false,"publicationDate":"2013-03-11","publicationStatus":"PW","scienceBaseUri":"5221bee2e4b001cbb8a34ee0","contributors":{"authors":[{"text":"Walls, Susan C. 0000-0001-7391-9155","orcid":"https://orcid.org/0000-0001-7391-9155","contributorId":52284,"corporation":false,"usgs":true,"family":"Walls","given":"Susan C.","affiliations":[],"preferred":false,"id":483264,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barichivich, William J. 0000-0003-1103-6861 wbarichivich@usgs.gov","orcid":"https://orcid.org/0000-0003-1103-6861","contributorId":3697,"corporation":false,"usgs":true,"family":"Barichivich","given":"William","email":"wbarichivich@usgs.gov","middleInitial":"J.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true},{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":483262,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brown, Mary E. 0000-0002-5580-137X mbrown@usgs.gov","orcid":"https://orcid.org/0000-0002-5580-137X","contributorId":5688,"corporation":false,"usgs":true,"family":"Brown","given":"Mary","email":"mbrown@usgs.gov","middleInitial":"E.","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":483263,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70118256,"text":"70118256 - 2013 - Response of anaerobic carbon cycling to water table manipulation in an Alaskan rich fen","interactions":[],"lastModifiedDate":"2014-07-28T10:08:36","indexId":"70118256","displayToPublicDate":"2013-03-01T10:00:47","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3416,"text":"Soil Biology and Biochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Response of anaerobic carbon cycling to water table manipulation in an Alaskan rich fen","docAbstract":"To test the effects of altered hydrology on organic soil decomposition, we investigated CO<sub>2</sub> and CH<sub>4</sub> production potential of rich-fen peat (mean surface pH = 6.3) collected from a field water table manipulation experiment including control, raised and lowered water table treatments. Mean anaerobic CO<sub>2</sub> production potential at 10 cm depth (14.1 ± 0.9 μmol C g<sup>−1</sup> d<sup>−1</sup>) was as high as aerobic CO<sub>2</sub> production potential (10.6 ± 1.5 μmol C g<sup>−1</sup> d<sup>−1</sup>), while CH4 production was low (mean of 7.8 ± 1.5 nmol C g<sup>−1</sup> d<sup>−1</sup>). Denitrification enzyme activity indicated a very high denitrification potential (197 ± 23 μg N g<sup>−1</sup> d<sup>−1</sup>), but net NO<sup>-</sup><sub>3</sub> reduction suggested this was a relatively minor pathway for anaerobic CO<sub>2</sub> production. Abundances of denitrifier genes (<i>nirK</i> and <i>nosZ</i>) did not change across water table treatments. SO<sup>2-</sup><sub>4</sub> reduction also did not appear to be an important pathway for anaerobic CO<sub>2</sub> production. The net accumulation of acetate and formate as decomposition end products in the raised water table treatment suggested that fermentation was a significant pathway for carbon mineralization, even in the presence of NO<sup>-</sup><sub>3</sub>. Dissolved organic carbon (DOC) concentrations were the strongest predictors of potential anaerobic and aerobic CO<sub>2</sub> production. Across all water table treatments, the CO<sub>2</sub>:CH<sub>4</sub> ratio increased with initial DOC leachate concentrations. While the field water table treatment did not have a significant effect on mean CO<sub>2</sub> or CH<sub>4</sub> production potential, the CO<sub>2</sub>:CH<sub>4</sub> ratio was highest in shallow peat incubations from the drained treatment. These data suggest that with continued drying or with a more variable water table, anaerobic CO<sub>2</sub> production may be favored over CH<sub>4</sub> production in this rich fen. Future research examining the potential for dissolved organic substances to facilitate anaerobic respiration, or alternative redox processes that limit the effectiveness of organic acids as substrates in anaerobic metabolism, would help explain additional uncertainty concerning carbon mineralization in this system.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Soil Biology and Biochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Pergamon","publisherLocation":"Oxford","doi":"10.1016/j.soilbio.2012.10.032","usgsCitation":"Kane, E., Chivers, M., Turetsky, M., Treat, C.C., Petersen, D., Waldrop, M., Harden, J., and McGuire, A., 2013, Response of anaerobic carbon cycling to water table manipulation in an Alaskan rich fen: Soil Biology and Biochemistry, v. 58, p. 50-60, https://doi.org/10.1016/j.soilbio.2012.10.032.","productDescription":"11 p.","startPage":"50","endPage":"60","numberOfPages":"11","costCenters":[],"links":[{"id":291110,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":291109,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.soilbio.2012.10.032"}],"volume":"58","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"57f7f346e4b0bc0bec0a08ac","contributors":{"authors":[{"text":"Kane, E.S.","contributorId":42275,"corporation":false,"usgs":true,"family":"Kane","given":"E.S.","email":"","affiliations":[],"preferred":false,"id":496615,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chivers, M.R.","contributorId":96505,"corporation":false,"usgs":true,"family":"Chivers","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":496616,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Turetsky, M.R.","contributorId":107470,"corporation":false,"usgs":true,"family":"Turetsky","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":496619,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Treat, Claire C.","contributorId":96606,"corporation":false,"usgs":true,"family":"Treat","given":"Claire","email":"","middleInitial":"C.","affiliations":[{"id":25501,"text":"University of Eastern Finland","active":true,"usgs":false}],"preferred":false,"id":496617,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Petersen, D.G.","contributorId":31687,"corporation":false,"usgs":true,"family":"Petersen","given":"D.G.","email":"","affiliations":[],"preferred":false,"id":496613,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Waldrop, M.","contributorId":97436,"corporation":false,"usgs":true,"family":"Waldrop","given":"M.","email":"","affiliations":[],"preferred":false,"id":496618,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Harden, J.W. 0000-0002-6570-8259","orcid":"https://orcid.org/0000-0002-6570-8259","contributorId":38585,"corporation":false,"usgs":true,"family":"Harden","given":"J.W.","affiliations":[],"preferred":false,"id":496614,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"McGuire, A. D.","contributorId":16552,"corporation":false,"usgs":true,"family":"McGuire","given":"A. D.","affiliations":[],"preferred":false,"id":496612,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70044266,"text":"sir20125257 - 2013 - Arsenic concentrations, related environmental factors, and the predicted probability of elevated arsenic in groundwater in Pennsylvania","interactions":[],"lastModifiedDate":"2016-08-10T21:22:56","indexId":"sir20125257","displayToPublicDate":"2013-03-01T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2012-5257","title":"Arsenic concentrations, related environmental factors, and the predicted probability of elevated arsenic in groundwater in Pennsylvania","docAbstract":"<p>Analytical results for arsenic in water samples from 5,023 wells obtained during 1969&ndash;2007 across Pennsylvania were compiled and related to other associated groundwater-quality and environmental factors and used to predict the probability of elevated arsenic concentrations, defined as greater than or equal to 4.0&nbsp;micrograms per liter (&micro;g/L), in groundwater. Arsenic concentrations of 4.0&nbsp;&micro;g/L or greater (elevated concentrations) were detected in 18 percent of samples across Pennsylvania; 8&nbsp;percent of samples had concentrations that equaled or exceeded the U.S. Environmental Protection Agency&rsquo;s drinking-water maximum contaminant level of 10.0&nbsp;&micro;g/L. The highest arsenic concentration was&nbsp;490.0&nbsp;&micro;g/L.</p>\n<p>Comparison of arsenic concentrations in Pennsylvania groundwater by physiographic province indicates that the Central Lowland physiographic province had the highest median arsenic concentration (4.5&nbsp;&micro;g/L) and the highest percentage of sample records with arsenic concentrations greater than or equal to 4.0&nbsp;&micro;g/L (59&nbsp;percent) and greater than or equal to 10.0&nbsp;&micro;g/L (43 percent). Evaluation of four major aquifer types (carbonate, crystalline, siliciclastic, and surficial) in Pennsylvania showed that all types had median arsenic concentrations less than 4.0&nbsp;&micro;g/L, and the highest arsenic concentration (490.0&nbsp;&micro;g/L) was in a siliciclastic aquifer. The siliciclastic and surficial aquifers had the highest percentage of sample records with arsenic concentrations greater than or equal to 4.0&nbsp;&micro;g/L and 10.0&nbsp;&micro;g/L. Elevated arsenic concentrations were associated with low pH (less than or equal to 4.0), high pH (greater than or equal to 8.0), or reducing conditions. For waters classified as anoxic (405 samples), 20&nbsp;percent of sampled wells contained water with elevated concentrations of arsenic; for waters classified as oxic (1,530&nbsp;samples) only 10 percent of sampled wells contained water with elevated arsenic concentrations. Nevertheless, regardless of the reduction-oxidation classification, 54&nbsp;percent of samples with low pH (13 of 24&nbsp;samples) and 25&nbsp;percent of samples with high pH (57 of 230&nbsp;samples) had elevated arsenic&nbsp;concentrations.</p>\n<p>Arsenic concentrations in groundwater in Pennsylvania were correlated with concentrations of several chemical constituents or properties, including (1) constituents associated with redox processes, (2) constituents that may have a similar origin or be mobilized under similar chemical conditions as arsenic, and (3) anions or oxyanions that have similar sorption behavior or compete for sorption sites on iron&nbsp;oxides.</p>\n<p>Logistic regression models were created to predict and map the probability of elevated arsenic concentrations in groundwater statewide in Pennsylvania and in three intrastate regions to further improve predictions for those three regions (glacial aquifer system, Gettysburg Basin, Newark Basin). Although the Pennsylvania and regional predictive models retained some different variables, they have common characteristics that can be grouped by (1) geologic and soils variables describing arsenic sources and mobilizers, (2) geochemical variables describing the geochemical environment of the groundwater, and (3) locally specific variables that are unique to each of the three regions studied and not applicable to statewide analysis. Maps of Pennsylvania and the three intrastate regions were produced that illustrate that areas most at risk are those with geology and soils capable of functioning as an arsenic source or mobilizer and geochemical groundwater conditions able to facilitate redox reactions. The models have limitations because they may not characterize areas that have localized controls on arsenic mobility. The probability maps associated with this report are intended for regional-scale use and may not be accurate for use at the field scale or when considering individual&nbsp;wells.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20125257","collaboration":"Prepared in cooperation with the Pennsylvania Department of Health and the Pennsylvania Department of Environmental Protection","usgsCitation":"Gross, E.L., and Low, D.J., 2013, Arsenic concentrations, related environmental factors, and the predicted probability of elevated arsenic in groundwater in Pennsylvania: U.S. Geological Survey Scientific Investigations Report 2012-5257, viii, 48 p., https://doi.org/10.3133/sir20125257.","productDescription":"viii, 48 p.","numberOfPages":"56","onlineOnly":"Y","additionalOnlineFiles":"N","costCenters":[{"id":532,"text":"Pennsylvania Water Science Center","active":true,"usgs":true}],"links":[{"id":268618,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir_2012_5257.png"},{"id":268617,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2012/5257/support/sir2012-5257.pdf","text":"Report","size":"3.3 MB","linkFileType":{"id":1,"text":"pdf"},"description":"Report"},{"id":268616,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2012/5257/"}],"scale":"100000","projection":"Albers Equal-Area Conic projection","country":"United 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,{"id":70193570,"text":"70193570 - 2013 - Faulting within the Mount St. Helens conduit and implications for volcanic earthquakes","interactions":[],"lastModifiedDate":"2017-11-02T10:44:27","indexId":"70193570","displayToPublicDate":"2013-03-01T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1723,"text":"GSA Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Faulting within the Mount St. Helens conduit and implications for volcanic earthquakes","docAbstract":"<p id=\"p-1\">The 2004–2008 eruption of Mount St. Helens produced seven dacite spines mantled by cataclastic fault rocks, comprising an outer fault core and an inner damage zone. These fault rocks provide remarkable insights into the mechanical processes that accompany extrusion of degassed magma, insights that are useful in forecasting dome-forming eruptions. The outermost part of the fault core consists of finely comminuted fault gouge that is host to 1- to 3-mm-thick layers of extremely fine-grained slickenside-bearing ultracataclasite. Interior to the fault core, there is an ∼2-m-thick damage zone composed of cataclastic breccia and sheared dacite, and interior to the damage zone, there is massive to flow-banded dacite lava of the spine interior. Structures and microtextures indicate entirely brittle deformation, including rock breakage, tensional dilation, shearing, grain flow, and microfaulting, as well as gas and fluid migration through intergranular pores and fractures in the damage zone. Slickenside lineations and consistent orientations of Riedel shears indicate upward shear of the extruding spines against adjacent conduit wall rocks.</p><p id=\"p-2\">Paleomagnetic directions, demagnetization paths, oxide mineralogy, and petrology indicate that cataclasis took place within dacite in a solidified steeply dipping volcanic conduit at temperatures above 500 °C. Low water content of matrix glass is consistent with brittle behavior at these relatively high temperatures, and the presence of tridymite indicates solidification depths of &lt;1 km. Cataclasis was coincident with the eruption’s seismogenic zone at &lt;1.5 km.</p><p id=\"p-3\">More than a million small and low-frequency “drumbeat” earthquakes with coda magnitudes (M<sub>d</sub>) &lt;2.0 and frequencies &lt;5 Hz occurred during the 2004–2008 eruption. Our field data provide a means with which to estimate slip-patch dimensions for shear planes and to compare these with estimates of slip patches based on seismic moments and shear moduli for dacite rock and granular fault gouge. Based on these comparisons, we find that aseismic creep is achieved by micron-scale displacements on Riedel shears and by granular flow, whereas the drumbeat earthquakes require millimeter to centimeter displacements on relatively large (e.g., ∼1000 m<sup>2</sup>) slip patches, possibly along observed extensive principal shear zones within the fault core but probably not along the smaller Riedel shears. Although our field and structural data are compatible with stick-slip models, they do not rule out seismic and infrasound models that call on resonance of steam-filled fractures to generate the drumbeat earthquakes. We suggest that stick-slip and gas release processes may be coupled, and that regardless of the source mechanism, the distinctive drumbeat earthquakes are proving to be an effective precursor for dome-forming eruptions.</p><p id=\"p-4\">Our data document a continuous cycle of deformation along the conduit margins beginning with episodes of fracture in the damage zone and followed by transfer of motion to the fault core. We illustrate the cycle of deformation using a hypothetical cross section of the Mount St. Helens conduit, extending from the surface to the depth of magmatic solidification.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/B30716.1","usgsCitation":"Pallister, J.S., Cashman, K.V., Hagstrum, J.T., Beeler, N.M., Moran, S.C., and Denlinger, R.P., 2013, Faulting within the Mount St. Helens conduit and implications for volcanic earthquakes: GSA Bulletin, v. 125, no. 3-4, p. 359-376, https://doi.org/10.1130/B30716.1.","productDescription":"18 p.","startPage":"359","endPage":"376","ipdsId":"IP-037093","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":348071,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","otherGeospatial":"Mount St. Helens","volume":"125","issue":"3-4","publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"noUsgsAuthors":false,"publicationDate":"2012-11-21","publicationStatus":"PW","scienceBaseUri":"59fc2eade4b0531197b27fe0","contributors":{"authors":[{"text":"Pallister, John S. 0000-0002-2041-2147 jpallist@usgs.gov","orcid":"https://orcid.org/0000-0002-2041-2147","contributorId":2024,"corporation":false,"usgs":true,"family":"Pallister","given":"John","email":"jpallist@usgs.gov","middleInitial":"S.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":719391,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cashman, Katharine V.","contributorId":199542,"corporation":false,"usgs":false,"family":"Cashman","given":"Katharine","email":"","middleInitial":"V.","affiliations":[{"id":13025,"text":"Department of Geological Sciences, University of Oregon","active":true,"usgs":false}],"preferred":false,"id":719394,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hagstrum, Jonathan T. 0000-0002-0689-280X jhag@usgs.gov","orcid":"https://orcid.org/0000-0002-0689-280X","contributorId":3474,"corporation":false,"usgs":true,"family":"Hagstrum","given":"Jonathan","email":"jhag@usgs.gov","middleInitial":"T.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":719390,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Beeler, Nicholas M. 0000-0002-3397-8481 nbeeler@usgs.gov","orcid":"https://orcid.org/0000-0002-3397-8481","contributorId":2682,"corporation":false,"usgs":true,"family":"Beeler","given":"Nicholas","email":"nbeeler@usgs.gov","middleInitial":"M.","affiliations":[{"id":234,"text":"Earthquake Hazards Program","active":true,"usgs":true},{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":719392,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Moran, Seth C. 0000-0001-7308-9649 smoran@usgs.gov","orcid":"https://orcid.org/0000-0001-7308-9649","contributorId":548,"corporation":false,"usgs":true,"family":"Moran","given":"Seth","email":"smoran@usgs.gov","middleInitial":"C.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"preferred":true,"id":719395,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Denlinger, Roger P. 0000-0003-0930-0635 roger@usgs.gov","orcid":"https://orcid.org/0000-0003-0930-0635","contributorId":2679,"corporation":false,"usgs":true,"family":"Denlinger","given":"Roger","email":"roger@usgs.gov","middleInitial":"P.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"preferred":true,"id":719393,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70169310,"text":"70169310 - 2013 - Predicted effect of landscape position on wildlife habitat value of Conservation Reserve Enhancement Program wetlands in a tile-drained agricultural region","interactions":[],"lastModifiedDate":"2016-03-24T10:03:05","indexId":"70169310","displayToPublicDate":"2013-03-01T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3271,"text":"Restoration Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Predicted effect of landscape position on wildlife habitat value of Conservation Reserve Enhancement Program wetlands in a tile-drained agricultural region","docAbstract":"<p>Justification for investment in restored or constructed wetland projects are often based on presumed net increases in ecosystem services. However, quantitative assessment of performance metrics is often difficult and restricted to a single objective. More comprehensive performance assessments could help inform decision-makers about trade-offs in services provided by alternative restoration program design attributes. The primary goal of the Iowa Conservation Reserve Enhancement Program is to establish wetlands that efficiently remove nitrates from tile-drained agricultural landscapes. A secondary objective is provision of wildlife habitat. We used existing wildlife habitat models to compare relative net change in potential wildlife habitat value for four alternative landscape positions of wetlands within the watershed. Predicted species richness and habitat value for birds, mammals, amphibians, and reptiles generally increased as the wetland position moved lower in the watershed. However, predicted average net increase between pre- and post-project value was dependent on taxonomic group. The increased average wetland area and changes in surrounding upland habitat composition among landscape positions were responsible for these differences. Net change in predicted densities of several grassland bird species at the four landscape positions was variable and species-dependent. Predicted waterfowl breeding activity was greater for lower drainage position wetlands. Although our models are simplistic and provide only a predictive index of potential habitat value, we believe such assessment exercises can provide a tool for coarse-level comparisons of alternative proposed project attributes and a basis for constructing informed hypotheses in auxiliary empirical field studies.</p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1526-100X.2012.00898.x","usgsCitation":"Otis, D.L., Crumpton, W.R., Green, D., Loan-Wilsey, A., Cooper, T., and Johnson, R.R., 2013, Predicted effect of landscape position on wildlife habitat value of Conservation Reserve Enhancement Program wetlands in a tile-drained agricultural region: Restoration Ecology, v. 21, no. 2, p. 276-284, https://doi.org/10.1111/j.1526-100X.2012.00898.x.","productDescription":"9 p.","startPage":"276","endPage":"284","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-029128","costCenters":[{"id":199,"text":"Coop Res Unit 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,{"id":70157244,"text":"70157244 - 2013 - Tamarisk: Ecohydrology of a successful plant","interactions":[],"lastModifiedDate":"2025-12-31T16:48:33.87161","indexId":"70157244","displayToPublicDate":"2013-03-01T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Tamarisk: Ecohydrology of a successful plant","docAbstract":"<p><span>This chapter explores the ecohydrology of tamarisk, with particular emphasis on water use, salt tolerance, potential for salinizing flood plains, drought tolerance and rooting depths, and ecological interactions with native plants on western rivers. It presents the working hypothesis that tamarisk is adapted to water stress, with low to moderate water use that tends to replace mesic vegetation when conditions on flow-regulated rivers become unsuitable for those species, rather than as an invasive species that displaces and out-competes native species under all conditions. It includes data on the annualized rates of evapotranspiration, transpiration, and stomatal conductance by tamarisk stands on western US rivers. It also cites the lack of evidence that simply removing tamarisk from a riverbank will improve salinity or allow native mesic vegetation to return.</span></p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Tamarix: A case study of ecological change in the American West","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Oxford University Press","publisherLocation":"New York, NY","doi":"10.1093/acprof:osobl/9780199898206.003.0005","usgsCitation":"Nagler, P.L., and Quigley, M.F., 2013, Tamarisk: Ecohydrology of a successful plant, chap. <i>of</i> Tamarix: A case study of ecological change in the American West, p. 63-84, https://doi.org/10.1093/acprof:osobl/9780199898206.003.0005.","productDescription":"22 p.","startPage":"63","endPage":"84","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-026847","costCenters":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"links":[{"id":308133,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55f94142e4b05d6c4e5013ad","contributors":{"editors":[{"text":"Sher, Anna","contributorId":112677,"corporation":false,"usgs":true,"family":"Sher","given":"Anna","affiliations":[],"preferred":false,"id":953196,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Quigley, Martin F.","contributorId":112538,"corporation":false,"usgs":true,"family":"Quigley","given":"Martin","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":953197,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Nagler, Pamela L. 0000-0003-0674-103X pnagler@usgs.gov","orcid":"https://orcid.org/0000-0003-0674-103X","contributorId":1398,"corporation":false,"usgs":true,"family":"Nagler","given":"Pamela","email":"pnagler@usgs.gov","middleInitial":"L.","affiliations":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"preferred":true,"id":572389,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Quigley, Martin F.","contributorId":112538,"corporation":false,"usgs":true,"family":"Quigley","given":"Martin","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":572390,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70158936,"text":"70158936 - 2013 - Determination of Antimycin-A in water by liquid chromatographic/mass spectrometry: single-laboratory validation","interactions":[],"lastModifiedDate":"2015-10-08T11:46:11","indexId":"70158936","displayToPublicDate":"2013-03-01T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2143,"text":"Journal of AOAC International","active":true,"publicationSubtype":{"id":10}},"title":"Determination of Antimycin-A in water by liquid chromatographic/mass spectrometry: single-laboratory validation","docAbstract":"<p>An LC/MS method was developed and validated for the quantitative determination and confirmation of antimycin-A (ANT-A) in water from lakes or streams. Three different water sample volumes (25, 50, and 250 mL) were evaluated. ANT-A was stabilized in the field by immediately extracting it from water into anhydrous acetone using SPE. The stabilized concentrated samples were then transported to a laboratory and analyzed by LC/MS using negative electrospray ionization. The method was determined to have adequate accuracy (78 to 113% recovery), precision (0.77 to 7.5% RSD with samples &ge;500 ng/L and 4.8 to 17% RSD with samples &le;100 ng/L), linearity, and robustness over an LOQ range from 8 to 51 600 ng/L.</p>","language":"English","publisher":"Association of Analytical Communities (AOAC) International","doi":"10.5740/jaoacint.12-286","usgsCitation":"Bernardy, J.A., Hubert, T.D., Ogorek, J.M., and Schmidt, L.J., 2013, Determination of Antimycin-A in water by liquid chromatographic/mass spectrometry: single-laboratory validation: Journal of AOAC International, v. 96, p. 413-421, https://doi.org/10.5740/jaoacint.12-286.","productDescription":"9 p.","startPage":"413","endPage":"421","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-042283","costCenters":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"links":[{"id":473936,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.5740/jaoacint.12-286","text":"Publisher Index Page"},{"id":309779,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"96","edition":"2","publishingServiceCenter":{"id":6,"text":"Columbus PSC"},"noUsgsAuthors":false,"publicationDate":"2019-11-27","publicationStatus":"PW","scienceBaseUri":"561793b1e4b0cdb063e3fb34","contributors":{"authors":[{"text":"Bernardy, Jeffry A. 0000-0001-7443-1995 jbernardy@usgs.gov","orcid":"https://orcid.org/0000-0001-7443-1995","contributorId":3537,"corporation":false,"usgs":true,"family":"Bernardy","given":"Jeffry","email":"jbernardy@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":576953,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hubert, Terrance D. 0000-0001-9712-1738 thubert@usgs.gov","orcid":"https://orcid.org/0000-0001-9712-1738","contributorId":3036,"corporation":false,"usgs":true,"family":"Hubert","given":"Terrance","email":"thubert@usgs.gov","middleInitial":"D.","affiliations":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"preferred":true,"id":576954,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ogorek, Jacob M. 0000-0002-6327-0740 jmogorek@usgs.gov","orcid":"https://orcid.org/0000-0002-6327-0740","contributorId":4960,"corporation":false,"usgs":true,"family":"Ogorek","given":"Jacob","email":"jmogorek@usgs.gov","middleInitial":"M.","affiliations":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true},{"id":37947,"text":"Upper Midwest Water Science Center","active":true,"usgs":true},{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":true,"id":576952,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Schmidt, Larry J.","contributorId":149119,"corporation":false,"usgs":false,"family":"Schmidt","given":"Larry","email":"","middleInitial":"J.","affiliations":[{"id":17649,"text":"USGS-UMESC, Retired","active":true,"usgs":false}],"preferred":false,"id":576955,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}}
,{"id":70150415,"text":"70150415 - 2013 - Fish assemblages in borrow-pit lakes of the Lower Mississippi River","interactions":[],"lastModifiedDate":"2015-06-24T13:47:32","indexId":"70150415","displayToPublicDate":"2013-03-01T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3624,"text":"Transactions of the American Fisheries Society","active":true,"publicationSubtype":{"id":10}},"title":"Fish assemblages in borrow-pit lakes of the Lower Mississippi River","docAbstract":"<p><span>Borrow-pit lakes encompass about a third of the lentic water habitats (by area) in the active floodplain of the Lower Mississippi River, yet little is known about their fish assemblages. We investigated whether fish assemblages supported by borrow-pit lakes resembled those in oxbow lakes to help place the ecological relevance of borrow-pit lakes in context with that of natural floodplain lakes. In all, we collected 75 fish species, including 65 species in eight borrow-pit lakes, 52 species in four riverside oxbow lakes, and 44 species in eight landside oxbow lakes. Significant differences in several species richness metrics were evident between borrow-pit lakes and landside oxbow lakes but not between borrow-pit lakes and riverside oxbow lakes. All three lake types differed in fish assemblage composition. Borrow-pit lakes and riverside oxbow lakes tended to include a greater representation of fish species that require access to diverse environments, including lentic, lotic, and palustrine habitats; fish assemblages in landside oxbow lakes included a higher representation of lacustrine species. None of the fish species collected in borrow-pit lakes was federally listed as threatened or endangered, but several were listed as species of special concern by state governments in the region, suggesting that borrow-pit lakes provide habitat for sensitive riverine and wetland fish species. Differences in fish assemblages among borrow-pit lakes were linked to engineered morphologic features, suggesting that diversity in engineering can contribute to diversity in fish assemblages; however, more research is needed to match engineering designs with fish assemblage structures that best meet conservation needs.</span></p>","language":"English","publisher":"Taylor & Francis","doi":"10.1080/00028487.2012.760486","usgsCitation":"Miranda, L.E., Killgore, K.J., and Hoover, J., 2013, Fish assemblages in borrow-pit lakes of the Lower Mississippi River: Transactions of the American Fisheries Society, v. 142, no. 3, p. 596-605, https://doi.org/10.1080/00028487.2012.760486.","productDescription":"10 p.","startPage":"596","endPage":"605","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-042704","costCenters":[{"id":198,"text":"Coop Res Unit 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J.","contributorId":143679,"corporation":false,"usgs":false,"family":"Killgore","given":"K.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":556824,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hoover, J.J.","contributorId":71037,"corporation":false,"usgs":true,"family":"Hoover","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":556825,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70154883,"text":"70154883 - 2013 - Evaluating  methodological assumptions of a catch-curve survival estimation of unmarked precocial shorebird chickes","interactions":[],"lastModifiedDate":"2015-07-15T14:06:15","indexId":"70154883","displayToPublicDate":"2013-03-01T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3731,"text":"Waterbirds","onlineIssn":"19385390","printIssn":"15244695","active":true,"publicationSubtype":{"id":10}},"title":"Evaluating  methodological assumptions of a catch-curve survival estimation of unmarked precocial shorebird chickes","docAbstract":"<p><span>Estimating productivity for precocial species can be difficult because young birds leave their nest within hours or days of hatching and detectability thereafter can be very low. Recently, a method for using a modified catch-curve to estimate precocial chick daily survival for age based count data was presented using Piping Plover (</span><i>Charadrius melodus</i><span>) data from the Missouri River. However, many of the assumptions of the catch-curve approach were not fully evaluated for precocial chicks. We developed a simulation model to mimic Piping Plovers, a fairly representative shorebird, and age-based count-data collection. Using the simulated data, we calculated daily survival estimates and compared them with the known daily survival rates from the simulation model. We conducted these comparisons under different sampling scenarios where the ecological and statistical assumptions had been violated. Overall, the daily survival estimates calculated from the simulated data corresponded well with true survival rates of the simulation. Violating the accurate aging and the independence assumptions did not result in biased daily survival estimates, whereas unequal detection for younger or older birds and violating the birth death equilibrium did result in estimator bias. Assuring that all ages are equally detectable and timing data collection to approximately meet the birth death equilibrium are key to the successful use of this method for precocial shorebirds.</span></p>","language":"English","publisher":"Waterbird Society","doi":"10.1675/063.036.0112","usgsCitation":"McGowan, C., and Gardner, B., 2013, Evaluating  methodological assumptions of a catch-curve survival estimation of unmarked precocial shorebird chickes: Waterbirds, v. 36, no. 1, p. 82-87, https://doi.org/10.1675/063.036.0112.","productDescription":"6 p.","startPage":"82","endPage":"87","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-038383","costCenters":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"links":[{"id":473938,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1675/063.036.0112","text":"Publisher Index Page"},{"id":305766,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"36","issue":"1","publishingServiceCenter":{"id":8,"text":"Raleigh PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55a78436e4b0183d66e45e88","contributors":{"authors":[{"text":"McGowan, Conor P. cmcgowan@usgs.gov","contributorId":145496,"corporation":false,"usgs":true,"family":"McGowan","given":"Conor P.","email":"cmcgowan@usgs.gov","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":false,"id":564310,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gardner, Beth","contributorId":91612,"corporation":false,"usgs":false,"family":"Gardner","given":"Beth","affiliations":[{"id":13553,"text":"University of Washington-Seattle","active":true,"usgs":false}],"preferred":false,"id":564875,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70156344,"text":"70156344 - 2013 - Tidally influenced alongshore circulation at an inlet-adjacent shoreline","interactions":[],"lastModifiedDate":"2015-08-20T13:09:15","indexId":"70156344","displayToPublicDate":"2013-03-01T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1333,"text":"Continental Shelf Research","active":true,"publicationSubtype":{"id":10}},"title":"Tidally influenced alongshore circulation at an inlet-adjacent shoreline","docAbstract":"<p>The contribution of tidal forcing to alongshore circulation inside the surfzone is investigated at a 7 km long sandy beach adjacent to a large tidal inlet. Ocean Beach in San Francisco, CA (USA) is onshore of a &sim;150 km2 ebb-tidal delta and directly south of the Golden Gate, the sole entrance to San Francisco Bay. Using a coupled flow-wave numerical model, we find that the tides modulate, and in some cases can reverse the direction of, surfzone alongshore flows through two separate mechanisms. First, tidal flow through the inlet results in a barotropic tidal pressure gradient that, when integrated across the surfzone, represents an important contribution to the surfzone alongshore force balance. Even during energetic wave conditions, the tidal pressure gradient can account for more than 30% of the total alongshore pressure gradient (wave and tidal components) and up to 55% during small waves. The wave driven component of the alongshore pressure gradient results from alongshore wave height and corresponding setup gradients induced by refraction over the ebb-tidal delta. Second, wave refraction patterns over the inner shelf are tidally modulated as a result of both tidal water depth changes and strong tidal flows (&sim;1 m/s), with the effect from currents being larger. These tidally induced changes in wave refraction result in corresponding variability of the alongshore radiation stress and pressure gradients within the surfzone. Our results indicate that tidal contributions to the surfzone force balance can be significant and important in determining the direction and magnitude of alongshore flow.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.csr.2013.01.017","usgsCitation":"Hansen, J., Elias, E.P., List, J.H., Erikson, L., and Barnard, P.L., 2013, Tidally influenced alongshore circulation at an inlet-adjacent shoreline: Continental Shelf Research, v. 56, p. 26-38, https://doi.org/10.1016/j.csr.2013.01.017.","productDescription":"13 p.","startPage":"26","endPage":"38","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-032119","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":438793,"rank":0,"type":{"id":30,"text":"Data Release"},"url":"https://doi.org/10.5066/F7DN4330","text":"USGS data release","linkHelpText":"San Francisco Bay Basic Tide Model"},{"id":307028,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","county":"San Francisco","otherGeospatial":"Ocean Beach","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -122.51953124999999,\n              37.729724141962045\n            ],\n            [\n              -122.51953124999999,\n              37.78781006166099\n            ],\n            [\n              -122.5037384033203,\n              37.78781006166099\n            ],\n            [\n              -122.5037384033203,\n              37.729724141962045\n            ],\n            [\n              -122.51953124999999,\n              37.729724141962045\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"56","publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55d6fa38e4b0518e3546bc5c","contributors":{"authors":[{"text":"Hansen, Jeff E.","contributorId":60339,"corporation":false,"usgs":true,"family":"Hansen","given":"Jeff E.","affiliations":[],"preferred":false,"id":568791,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Elias, Edwin P.L.","contributorId":47295,"corporation":false,"usgs":true,"family":"Elias","given":"Edwin","email":"","middleInitial":"P.L.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":568790,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"List, Jeffrey H. jlist@usgs.gov","contributorId":140039,"corporation":false,"usgs":true,"family":"List","given":"Jeffrey","email":"jlist@usgs.gov","middleInitial":"H.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":568792,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Erikson, Li H. lerikson@usgs.gov","contributorId":145944,"corporation":false,"usgs":true,"family":"Erikson","given":"Li H.","email":"lerikson@usgs.gov","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":568793,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Barnard, Patrick L. 0000-0003-1414-6476 pbarnard@usgs.gov","orcid":"https://orcid.org/0000-0003-1414-6476","contributorId":140982,"corporation":false,"usgs":true,"family":"Barnard","given":"Patrick","email":"pbarnard@usgs.gov","middleInitial":"L.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":568794,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70154989,"text":"70154989 - 2013 - Daily survival rate for nests and chicks of Least Terns (<i>Sternula antillarum</i>) at natural nest sites in South Carolina","interactions":[],"lastModifiedDate":"2016-11-30T14:40:52","indexId":"70154989","displayToPublicDate":"2013-03-01T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3731,"text":"Waterbirds","onlineIssn":"19385390","printIssn":"15244695","active":true,"publicationSubtype":{"id":10}},"title":"Daily survival rate for nests and chicks of Least Terns (<i>Sternula antillarum</i>) at natural nest sites in South Carolina","docAbstract":"<p><span>Although a species of conservation concern, little is known about the reproductive success of Least Terns (</span><i>Sternula antillarum</i><span>) throughout the southeastern USA where availability of natural beaches for nesting is limited. Daily survival rate (DSR) of nests and chicks was examined at four natural nesting sites in Cape Romain National Wildlife Refuge, South Carolina, 2009&ndash;2010. Measures of nest success (</span><i>n</i><span>&nbsp;= 257 nests) ranged from 0&ndash;93% among colony sites. The DSR of nests was primarily related to colony site, but year and estimates of predation risk also were related to DSR. Predation was the principal cause of identifiable nest loss, accounting for 47% of nest failures when the two years of data were pooled. The probability (&plusmn; SE) of a chick surviving from hatching to fledging = 0.449 &plusmn; 0.01 (</span><i>n</i><span>&nbsp;= 92 chicks). DSR of chicks was negatively related to tide height and rainfall. Therefore, productivity of Least Terns is being lost during both the nesting and chick stage through a combination of biotic and abiotic factors that may prove difficult to fully mitigate or manage. Although natural nesting sites within Cape Romain National Wildlife Refuge intermittently produce successful nests, the consistency of productivity over the long term is still unknown. Given that the long term availability of anthropogenic nest sites (e.g., rooftops, dredge-spoil islands) for Least Terns is questionable, further research is required both locally and throughout the region to assess the extent to which natural sites act as population sources or sinks.</span></p>","language":"English","publisher":"The Waterbird Society","doi":"10.1675/063.036.0101","usgsCitation":"Brooks, G.L., Sanders, F.J., Gerard, P., and Jodice, P.G., 2013, Daily survival rate for nests and chicks of Least Terns (<i>Sternula antillarum</i>) at natural nest sites in South Carolina: Waterbirds, v. 36, no. 1, p. 1-10, https://doi.org/10.1675/063.036.0101.","productDescription":"10 p.","startPage":"1","endPage":"10","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-035360","costCenters":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true},{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":305899,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"South Carolina","otherGeospatial":"Cape Romain National Wildlife Refuge","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -79.52796936035156,\n              33.00636021320537\n            ],\n            [\n              -79.52796936035156,\n              33.09643121740349\n            ],\n            [\n              -79.3267822265625,\n              33.09643121740349\n            ],\n            [\n              -79.3267822265625,\n              33.00636021320537\n            ],\n            [\n              -79.52796936035156,\n              33.00636021320537\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"36","issue":"1","publishingServiceCenter":{"id":8,"text":"Raleigh PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55b0beaae4b09a3b01b53086","contributors":{"authors":[{"text":"Brooks, Gillian L.","contributorId":31033,"corporation":false,"usgs":true,"family":"Brooks","given":"Gillian","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":565335,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sanders, Felicia J.","contributorId":56574,"corporation":false,"usgs":false,"family":"Sanders","given":"Felicia","email":"","middleInitial":"J.","affiliations":[{"id":35670,"text":"South Carolina Department of Natural Resources","active":true,"usgs":false}],"preferred":false,"id":565336,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gerard, Patrick D.","contributorId":140181,"corporation":false,"usgs":false,"family":"Gerard","given":"Patrick D.","affiliations":[{"id":7084,"text":"Clemson University","active":true,"usgs":false}],"preferred":false,"id":565337,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jodice, Patrick G.R. 0000-0001-8716-120X pjodice@usgs.gov","orcid":"https://orcid.org/0000-0001-8716-120X","contributorId":1119,"corporation":false,"usgs":true,"family":"Jodice","given":"Patrick","email":"pjodice@usgs.gov","middleInitial":"G.R.","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":false,"id":564468,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70178479,"text":"70178479 - 2013 - Suspended-sediment flux and retention in a backwater tidal slough complex near the landward boundary of an estuary","interactions":[],"lastModifiedDate":"2017-10-30T11:43:08","indexId":"70178479","displayToPublicDate":"2013-03-01T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1584,"text":"Estuaries and Coasts","active":true,"publicationSubtype":{"id":10}},"title":"Suspended-sediment flux and retention in a backwater tidal slough complex near the landward boundary of an estuary","docAbstract":"<p><span>Backwater tidal sloughs are commonly found at the landward boundary of estuaries. The Cache Slough complex is a backwater tidal region within the Upper Sacramento–San Joaquin Delta that includes two features that are relevant for resource managers: (1) relatively high abundance of the endangered fish, delta smelt (</span><i class=\"EmphasisTypeItalic \">Hypomesus transpacificus</i><span>), which prefers turbid water and (2) a recently flooded shallow island, Liberty Island, that is a prototype for habitat restoration. We characterized the turbidity around Liberty Island by measuring suspended-sediment flux at four locations from July 2008 through December 2010. An estuarine turbidity maximum in the backwater Cache Slough complex is created by tidal asymmetry, a limited tidal excursion, and wind-wave resuspension. During the study, there was a net export of sediment, though sediment accumulates within the region from landward tidal transport during the dry season. Sediment is continually resuspended by both wind waves and flood tide currents. The suspended-sediment mass oscillates within the region until winter freshwater flow pulses flush it seaward. The hydrodynamic characteristics within the backwater region such as low freshwater flow during the dry season, flood tide dominance, and a limited tidal excursion favor sediment retention.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s12237-012-9574-z","usgsCitation":"Morgan-King, T.L., and Schoellhamer, D., 2013, Suspended-sediment flux and retention in a backwater tidal slough complex near the landward boundary of an estuary: Estuaries and Coasts, v. 36, no. 2, p. 300-318, https://doi.org/10.1007/s12237-012-9574-z.","productDescription":"19 p.","startPage":"300","endPage":"318","ipdsId":"IP-006334","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true}],"links":[{"id":331156,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Sacramento-San Joaquin Delta, San Francisco Bay","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -122.53326416015624,\n              37.400710068740565\n            ],\n            [\n              -122.53326416015624,\n              38.528830289587674\n            ],\n            [\n              -121.06658935546874,\n              38.528830289587674\n            ],\n            [\n              -121.06658935546874,\n              37.400710068740565\n            ],\n            [\n              -122.53326416015624,\n              37.400710068740565\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"36","issue":"2","publishingServiceCenter":{"id":1,"text":"Sacramento PSC"},"noUsgsAuthors":false,"publicationDate":"2012-11-30","publicationStatus":"PW","scienceBaseUri":"583415b4e4b0070c0abed82c","contributors":{"authors":[{"text":"Morgan-King, Tara L. 0000-0001-5632-5232 tamorgan@usgs.gov","orcid":"https://orcid.org/0000-0001-5632-5232","contributorId":554,"corporation":false,"usgs":true,"family":"Morgan-King","given":"Tara","email":"tamorgan@usgs.gov","middleInitial":"L.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":false,"id":654135,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schoellhamer, David H. 0000-0001-9488-7340 dschoell@usgs.gov","orcid":"https://orcid.org/0000-0001-9488-7340","contributorId":631,"corporation":false,"usgs":true,"family":"Schoellhamer","given":"David H.","email":"dschoell@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":654134,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70045893,"text":"70045893 - 2013 - Mineral resource of the month: beryllium","interactions":[],"lastModifiedDate":"2013-05-08T16:30:50","indexId":"70045893","displayToPublicDate":"2013-03-01T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1419,"text":"Earth","active":true,"publicationSubtype":{"id":10}},"title":"Mineral resource of the month: beryllium","docAbstract":"The article discusses information about Beryllium. It notes that Beryllium is a light metal that has a gray color. The metal is used in the production of parts and devices including bearings, computer-chip heat sinks, and output windows of X-ray tubes. The article mentions Beryllium's discovery in 1798 by French chemist, Louis-Nicolas Vanquelin. It cites that bertrandite and beryl are the principal mineral components for the commercial production of beryllium.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Earth","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"AGI","usgsCitation":"Water Resources Division, U.S. Geological Survey, 2013, Mineral resource of the month: beryllium: Earth, v. 58, no. 2, p. 57-57.","productDescription":"1 p.","startPage":"57","endPage":"57","costCenters":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"links":[{"id":272075,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"58","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"518b73e7e4b0037667dbc80e","contributors":{"authors":[{"text":"Water Resources Division, U.S. Geological Survey","contributorId":128075,"corporation":true,"usgs":false,"organization":"Water Resources Division, U.S. Geological Survey","id":535495,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70043412,"text":"70043412 - 2013 - Reproductive health of yellow perch Perca flavescens in selected tributaries of the Chesapeake Bay","interactions":[],"lastModifiedDate":"2013-06-06T15:51:52","indexId":"70043412","displayToPublicDate":"2013-03-01T00:00:00","publicationYear":"2013","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3352,"text":"Science of the Total Environment","active":true,"publicationSubtype":{"id":10}},"title":"Reproductive health of yellow perch Perca flavescens in selected tributaries of the Chesapeake Bay","docAbstract":"Reduced recruitment of yellow perch has been noted for a number of years in certain urbanized watersheds (South and Severn Rivers) of the Chesapeake Bay. Other rapidly developing watersheds such as Mattawoman Creek are more recently showing evidence of reduced recruitment of anadromous fishes. In this study, we used a battery of biomarkers to better document the reproductive health of adult yellow perch collected during spring spawning in 2007–2009. Perch were collected in the South and Severn Rivers, Mattawoman Creek and the less developed Choptank and Allen's Fresh watersheds for comparison. Gonadosomatic indices, plasma reproductive hormone concentrations, plasma vitellogenin concentrations and gonad histology were evaluated in mature perch of both sexes. In addition, sperm quantity (cell counts) and quality (total and progressive motility, spermatogenic stage and DNA integrity), were measured in male perch. Many of these biomarkers varied annually and spatially, with some interesting statistical results and trends. Male perch from the Choptank and Allen's Fresh had generally higher sperm counts. In 2008 counts were significantly lower in the perch from the Severn when compared to other sites. The major microscopic gonadal abnormality in males was the proliferation of putative Leydig cells, observed in testes from Severn and less commonly, Mattawoman Creek perch. Observations that could significantly impact egg viability were an apparent lack of final maturation, abnormal yolk and thin, irregular zona pellucida. These were observed primarily in ovaries from Severn, South and less commonly Mattawoman Creek perch. The potential association of these observations with urbanization, impervious surface and chemical contaminants is discussed.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Science of the Total Environment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.scitotenv.2012.12.088","usgsCitation":"Blazer, V., Pinkney, A.E., Jenkins, J.A., Iwanowicz, L., Minkkinen, S., Draugelis-Dale, R.O., and Uphoff, J.H., 2013, Reproductive health of yellow perch Perca flavescens in selected tributaries of the Chesapeake Bay: Science of the Total Environment, v. 447, p. 198-209, https://doi.org/10.1016/j.scitotenv.2012.12.088.","productDescription":"12 p.","startPage":"198","endPage":"209","ipdsId":"IP-042717","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true},{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true}],"links":[{"id":273414,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":273413,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.scitotenv.2012.12.088"}],"country":"United States","state":"Maryl;Virginia","otherGeospatial":"Chesapeake Bay","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -76.46,36.90 ], [ -76.46,37.96 ], [ -75.63,37.96 ], [ -75.63,36.90 ], [ -76.46,36.90 ] ] ] } } ] }","volume":"447","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"51b1bbd5e4b022a6a540fa14","contributors":{"authors":[{"text":"Blazer, Vicki 0000-0001-6647-9614 vblazer@usgs.gov","orcid":"https://orcid.org/0000-0001-6647-9614","contributorId":792,"corporation":false,"usgs":true,"family":"Blazer","given":"Vicki","email":"vblazer@usgs.gov","affiliations":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"preferred":false,"id":473547,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pinkney, Alfred E.","contributorId":14253,"corporation":false,"usgs":false,"family":"Pinkney","given":"Alfred","email":"","middleInitial":"E.","affiliations":[{"id":12750,"text":"U.S. Fish and Wildlife Service, Annapolis, MD","active":true,"usgs":false}],"preferred":false,"id":473550,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jenkins, Jill A. 0000-0002-5087-0894 jenkinsj@usgs.gov","orcid":"https://orcid.org/0000-0002-5087-0894","contributorId":2710,"corporation":false,"usgs":true,"family":"Jenkins","given":"Jill","email":"jenkinsj@usgs.gov","middleInitial":"A.","affiliations":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":473548,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Iwanowicz, Luke R.","contributorId":11902,"corporation":false,"usgs":true,"family":"Iwanowicz","given":"Luke R.","affiliations":[],"preferred":false,"id":473549,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Minkkinen, Steven","contributorId":16734,"corporation":false,"usgs":true,"family":"Minkkinen","given":"Steven","email":"","affiliations":[],"preferred":false,"id":473551,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Draugelis-Dale, Rassa O. 0000-0001-8532-3287 daler@usgs.gov","orcid":"https://orcid.org/0000-0001-8532-3287","contributorId":20422,"corporation":false,"usgs":true,"family":"Draugelis-Dale","given":"Rassa","email":"daler@usgs.gov","middleInitial":"O.","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true},{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true}],"preferred":true,"id":473552,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Uphoff, James H.","contributorId":74656,"corporation":false,"usgs":true,"family":"Uphoff","given":"James","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":473553,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
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