{"pageNumber":"1238","pageRowStart":"30925","pageSize":"25","recordCount":184858,"records":[{"id":70150316,"text":"70150316 - 2015 - Evaluating the relationship between biomass, percent groundcover and remote sensing indices across six winter cover crop fields in Maryland, United States","interactions":[],"lastModifiedDate":"2015-07-01T13:17:52","indexId":"70150316","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2027,"text":"International Journal of Applied Earth Observation and Geoinformation","active":true,"publicationSubtype":{"id":10}},"title":"Evaluating the relationship between biomass, percent groundcover and remote sensing indices across six winter cover crop fields in Maryland, United States","docAbstract":"<p><span>Winter cover crops are an essential part of managing nutrient and sediment losses from agricultural lands. Cover crops lessen sedimentation by reducing erosion, and the accumulation of nitrogen in aboveground biomass results in reduced nutrient runoff. Winter cover crops are planted in the fall and are usually terminated in early spring, making them susceptible to senescence, frost burn, and leaf yellowing due to wintertime conditions. This study sought to determine to what extent remote sensing indices are capable of accurately estimating the percent groundcover and biomass of winter cover crops, and to analyze under what critical ranges these relationships are strong and under which conditions they break down. Cover crop growth on six fields planted to barley, rye, ryegrass, triticale or wheat was measured over the 2012&ndash;2013 winter growing season. Data collection included spectral reflectance measurements, aboveground biomass, and percent groundcover. Ten vegetation indices were evaluated using surface reflectance data from a 16-band CROPSCAN sensor. Restricting analysis to sampling dates before the onset of prolonged freezing temperatures and leaf yellowing resulted in increased estimation accuracy. There was a strong relationship between the normalized difference vegetation index (NDVI) and percent groundcover (</span><i>r</i><sup>2</sup><span>&nbsp;=&nbsp;0.93) suggesting that date restrictions effectively eliminate yellowing vegetation from analysis. The triangular vegetation index (TVI) was most accurate in estimating high ranges of biomass (</span><i>r</i><sup>2</sup><span>&nbsp;=&nbsp;0.86), while NDVI did not experience a clustering of values in the low and medium biomass ranges but saturated in the higher range (&gt;1500&nbsp;kg/ha). The results of this study show that accounting for index saturation, senescence, and frost burn on leaves can greatly increase the accuracy of estimates of percent groundcover and biomass for winter cover crops.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.jag.2015.03.002","usgsCitation":"Prabhakara, K., Hively, W., and McCarty, G.W., 2015, Evaluating the relationship between biomass, percent groundcover and remote sensing indices across six winter cover crop fields in Maryland, United States: International Journal of Applied Earth Observation and Geoinformation, v. 39, p. 88-102, https://doi.org/10.1016/j.jag.2015.03.002.","productDescription":"15 p.","startPage":"88","endPage":"102","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-062027","costCenters":[{"id":242,"text":"Eastern Geographic Science Center","active":true,"usgs":true}],"links":[{"id":488361,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.jag.2015.03.002","text":"Publisher Index Page"},{"id":305541,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maryland","county":"Beltsville","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -76.88652992248535,\n              39.02681869722843\n            ],\n            [\n              -76.88652992248535,\n              39.0351862510659\n            ],\n            [\n              -76.87356948852539,\n              39.0351862510659\n            ],\n            [\n              -76.87356948852539,\n              39.02681869722843\n            ],\n            [\n              -76.88652992248535,\n              39.02681869722843\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"39","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55950121e4b0b6d21dd6cbb4","contributors":{"authors":[{"text":"Prabhakara, Kusuma","contributorId":6313,"corporation":false,"usgs":true,"family":"Prabhakara","given":"Kusuma","email":"","affiliations":[],"preferred":false,"id":556699,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hively, W. Dean whively@usgs.gov","contributorId":4919,"corporation":false,"usgs":true,"family":"Hively","given":"W. Dean","email":"whively@usgs.gov","affiliations":[{"id":242,"text":"Eastern Geographic Science Center","active":true,"usgs":true}],"preferred":false,"id":556698,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McCarty, Greg W.","contributorId":143675,"corporation":false,"usgs":false,"family":"McCarty","given":"Greg","email":"","middleInitial":"W.","affiliations":[{"id":15298,"text":"USDA-ARS Hydrology and Remote Sensing Laboratory, Bldg 007, BARC-W, 10300 Baltimore Avenue, Beltsville, Maryland 20705, United States","active":true,"usgs":false}],"preferred":false,"id":556700,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70186038,"text":"70186038 - 2015 - Potash, 2014","interactions":[],"lastModifiedDate":"2017-03-31T09:58:11","indexId":"70186038","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2755,"text":"Mining Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Potash, 2014","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"SME","usgsCitation":"Jasinski, S.M., 2015, Potash, 2014: Mining Engineering, v. 67, no. 7, p. 31-31.","productDescription":"1 p.","startPage":"31","endPage":"31","ipdsId":"IP-065162","costCenters":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"links":[{"id":338896,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":338895,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://me.smenet.org/abstract.cfm?preview=1&articleID=6022&page=31"}],"volume":"67","issue":"7","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58df6ac2e4b02ff32c6aea49","contributors":{"authors":[{"text":"Jasinski, Stephen M. sjasinsk@usgs.gov","contributorId":2735,"corporation":false,"usgs":true,"family":"Jasinski","given":"Stephen","email":"sjasinsk@usgs.gov","middleInitial":"M.","affiliations":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"preferred":true,"id":687432,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70191095,"text":"70191095 - 2015 - Diverting lava flows in the lab","interactions":[],"lastModifiedDate":"2017-09-26T11:46:23","indexId":"70191095","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2845,"text":"Nature Geoscience","active":true,"publicationSubtype":{"id":10}},"title":"Diverting lava flows in the lab","docAbstract":"<p>Recent volcanic eruptions in Hawai'i, Iceland and Cape Verde highlight the challenges of mitigating hazards when lava flows threaten infrastructure. Diversion barriers are the most common form of intervention, but historical attempts to divert lava flows have met with mixed success<span>&nbsp;</span>and there has been little systematic analysis of optimal barrier design. We examine the interaction of viscous flows of syrup and molten basalt with barriers in the laboratory. We find that flows thicken immediately upslope of an obstacle, forming a localized bow wave that can overtop barriers. Larger bow waves are generated by faster flows and by obstacles oriented at a high angle to the flow direction. The geometry of barriers also influences flow behaviour. Barriers designed to split or dam flows will slow flow advance, but cause the flow to widen, whereas oblique barriers can effectively divert flows, but may also accelerate flow advance. We argue that to be successful, mitigation of lava-flow hazards must incorporate the dynamics of lava flow–obstacle interactions into barrier design. The same generalizations apply to the effect of natural topographic features on flow geometry and advance rates<font size=\"1\">.</font></p>","language":"English","publisher":"Nature Publishing Group ","doi":"10.1038/ngeo2470","usgsCitation":"Dietterich, H.R., Cashman, K., Rust, A.C., and Lev, E., 2015, Diverting lava flows in the lab: Nature Geoscience, v. 8, p. 494-496, https://doi.org/10.1038/ngeo2470.","productDescription":"3 p.","startPage":"494","endPage":"496","ipdsId":"IP-062976","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":346092,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"8","publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"noUsgsAuthors":false,"publicationDate":"2015-06-30","publicationStatus":"PW","scienceBaseUri":"59cb6735e4b017cf3141c6ab","contributors":{"authors":[{"text":"Dietterich, Hannah R. 0000-0001-7898-4343 hdietterich@usgs.gov","orcid":"https://orcid.org/0000-0001-7898-4343","contributorId":194354,"corporation":false,"usgs":true,"family":"Dietterich","given":"Hannah","email":"hdietterich@usgs.gov","middleInitial":"R.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":711160,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cashman, Katharine V.","contributorId":40097,"corporation":false,"usgs":false,"family":"Cashman","given":"Katharine V.","affiliations":[],"preferred":false,"id":711161,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rust, Alison C.","contributorId":196700,"corporation":false,"usgs":false,"family":"Rust","given":"Alison","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":711162,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lev, Einat 0000-0002-8174-0558","orcid":"https://orcid.org/0000-0002-8174-0558","contributorId":194355,"corporation":false,"usgs":false,"family":"Lev","given":"Einat","email":"","affiliations":[{"id":27369,"text":"Lamont-Doherty Earth Observatory at Columbia University","active":true,"usgs":false}],"preferred":false,"id":711163,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70192580,"text":"70192580 - 2015 - Patterns and predictability in the intra-annual organic carbon variability across the boreal and hemiboreal landscape","interactions":[],"lastModifiedDate":"2017-11-17T11:43:17","indexId":"70192580","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","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":"Patterns and predictability in the intra-annual organic carbon variability across the boreal and hemiboreal landscape","docAbstract":"<p id=\"sp0005\">Factors affecting total organic carbon (TOC) concentrations in 215 watercourses across Sweden were investigated using parameter parsimonious regression approaches to explain spatial and temporal variabilities of the TOC water quality responses. We systematically quantified the effects of discharge, seasonality, and long-term trend as factors controlling intra-annual (among year) and inter-annual (within year) variabilities of TOC by evaluating the spatial variability in model coefficients and catchment characteristics (e.g. land cover, retention time, soil type).</p><p id=\"sp0010\">Catchment area (0.18–47,000&nbsp;km<sup>2</sup>) and land cover types (forests, agriculture and alpine terrain) are typical for the boreal and hemiboreal zones across Fennoscandia. Watercourses had at least 6&nbsp;years of monthly water quality observations between 1990 and 2010. Statistically significant models (p&nbsp;&lt;&nbsp;0.05) describing variation of TOC in streamflow were identified in 209 of 215 watercourses with a mean Nash-Sutcliffe efficiency index of 0.44. Increasing long-term trends were observed in 149 (70%) of the watercourses, and intra-annual variation in TOC far exceeded inter-annual variation. The average influences of the discharge and seasonality terms on intra-annual variations in daily TOC concentration were 1.4 and 1.3&nbsp;mg&nbsp;l<sup>−&nbsp;1</sup><span>&nbsp;</span>(13 and 12% of the mean annual TOC), respectively. The average increase in TOC was 0.17&nbsp;mg&nbsp;l<sup>−&nbsp;1</sup>&nbsp;year<sup>−&nbsp;1</sup><span>&nbsp;</span>(1.6% year<sup>−&nbsp;1</sup>).</p><p id=\"sp0015\">Multivariate regression with over 90 different catchment characteristics explained 21% of the spatial variation in the linear trend coefficient, less than 20% of the variation in the discharge coefficient and 73% of the spatial variation in mean TOC. Specific discharge, water residence time, the variance of daily precipitation, and lake area, explained 45% of the spatial variation in the amplitude of the TOC seasonality.</p><p id=\"sp0020\">Because the main drivers of temporal variability in TOC are seasonality and discharge, first-order estimates of the influences of climatic variability and change on TOC concentration should be predictable if the studied catchments continue to respond similarly.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.scitotenv.2015.03.041","usgsCitation":"Hytteborn, J.K., Temnerud, J., Alexander, R.B., Boyer, E.W., Futter, M.N., Froberg, M., Dahne, J., and Bishop, K.H., 2015, Patterns and predictability in the intra-annual organic carbon variability across the boreal and hemiboreal landscape: Science of the Total Environment, v. 520, p. 260-269, https://doi.org/10.1016/j.scitotenv.2015.03.041.","productDescription":"10 p.","startPage":"260","endPage":"269","ipdsId":"IP-062350","costCenters":[{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true}],"links":[{"id":349066,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"520","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5a60fe80e4b06e28e9c25309","contributors":{"authors":[{"text":"Hytteborn, Julia K.","contributorId":198524,"corporation":false,"usgs":false,"family":"Hytteborn","given":"Julia","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":716323,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Temnerud, Johan","contributorId":198525,"corporation":false,"usgs":false,"family":"Temnerud","given":"Johan","email":"","affiliations":[],"preferred":false,"id":716324,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Alexander, Richard B. 0000-0001-9166-0626 ralex@usgs.gov","orcid":"https://orcid.org/0000-0001-9166-0626","contributorId":541,"corporation":false,"usgs":true,"family":"Alexander","given":"Richard","email":"ralex@usgs.gov","middleInitial":"B.","affiliations":[{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true},{"id":503,"text":"Office of Water Quality","active":true,"usgs":true}],"preferred":true,"id":716322,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Boyer, Elizabeth W.","contributorId":44659,"corporation":false,"usgs":false,"family":"Boyer","given":"Elizabeth","email":"","middleInitial":"W.","affiliations":[{"id":7260,"text":"Pennsylvania State University","active":true,"usgs":false}],"preferred":false,"id":716325,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Futter, Martyn N.","contributorId":198527,"corporation":false,"usgs":false,"family":"Futter","given":"Martyn","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":716326,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Froberg, Mats","contributorId":198528,"corporation":false,"usgs":false,"family":"Froberg","given":"Mats","email":"","affiliations":[],"preferred":false,"id":716327,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Dahne, Joel","contributorId":198529,"corporation":false,"usgs":false,"family":"Dahne","given":"Joel","email":"","affiliations":[],"preferred":false,"id":716328,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Bishop, Kevin H.","contributorId":198530,"corporation":false,"usgs":false,"family":"Bishop","given":"Kevin","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":716329,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70173444,"text":"70173444 - 2015 - Building a multi-scaled geospatial temporal ecology database from disparate data sources: Fostering open science through data reuse","interactions":[],"lastModifiedDate":"2016-06-20T14:07:39","indexId":"70173444","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5091,"text":"GigaScience","active":true,"publicationSubtype":{"id":10}},"title":"Building a multi-scaled geospatial temporal ecology database from disparate data sources: Fostering open science through data reuse","docAbstract":"<p><span>Although there are considerable site-based data for individual or groups of ecosystems, these datasets are widely scattered, have different data formats and conventions, and often have limited accessibility. At the broader scale, national datasets exist for a large number of geospatial features of land, water, and air that are needed to fully understand variation among these ecosystems. However, such datasets originate from different sources and have different spatial and temporal resolutions. By taking an open-science perspective and by combining site-based ecosystem datasets and national geospatial datasets, science gains the ability to ask important research questions related to grand environmental challenges that operate at broad scales. Documentation of such complicated database integration efforts, through peer-reviewed papers, is recommended to foster reproducibility and future use of the integrated database. Here, we describe the major steps, challenges, and considerations in building an integrated database of lake ecosystems, called LAGOS (LAke multi-scaled GeOSpatial and temporal database), that was developed at the sub-continental study extent of 17 US states (1,800,000&nbsp;km</span><sup><span>2</span></sup><span>). LAGOS includes two modules: LAGOS</span><sub><span>GEO</span></sub><span>, with geospatial data on every lake with surface area larger than 4&nbsp;ha in the study extent (~50,000 lakes), including climate, atmospheric deposition, land use/cover, hydrology, geology, and topography measured across a range of spatial and temporal extents; and LAGOS</span><sub><span>LIMNO</span></sub><span>, with lake water quality data compiled from ~100 individual datasets for a subset of lakes in the study extent (~10,000 lakes). Procedures for the integration of datasets included: creating a flexible database design; authoring and integrating metadata; documenting data provenance; quantifying spatial measures of geographic data; quality-controlling integrated and derived data; and extensively documenting the database. Our procedures make a large, complex, and integrated database reproducible and extensible, allowing users to ask new research questions with the existing database or through the addition of new data. The largest challenge of this task was the heterogeneity of the data, formats, and metadata. Many steps of data integration need manual input from experts in diverse fields, requiring close collaboration.</span></p>","language":"English","publisher":"BioMed Central","doi":"10.1186/s13742-015-0067-4","usgsCitation":"Soranno, P.A., Bissell, E., Cheruvelil, K.S., Christel, S.T., Collins, S.M., Fergus, C.E., Filstrup, C.T., Lapierre, J., Lotting, N.R., Oliver, S., Scott, C.E., Smith, N.J., Stopyak, S., Yuan, S., Bremigan, M.T., Downing, J., Gries, C., Henry, E.N., Skaff, N.K., Stanley, E.H., Stow, C., Tan, P., Wagner, T., and Webster, K.E., 2015, Building a multi-scaled geospatial temporal ecology database from disparate data sources: Fostering open science through data reuse: GigaScience, v. 4, no. 28, https://doi.org/10.1186/s13742-015-0067-4.","onlineOnly":"Y","additionalOnlineFiles":"N","ipdsId":"IP-062339","costCenters":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"links":[{"id":471979,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1186/s13742-015-0067-4","text":"Publisher Index Page"},{"id":324012,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Wisconsin","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -97.3388671875,\n              49.35375571830993\n            ],\n            [\n              -94.7900390625,\n              36.421282443649496\n            ],\n            [\n              -89.296875,\n              35.99578538642032\n            ],\n            [\n              -88.330078125,\n              37.19533058280065\n            ],\n            [\n              -87.3193359375,\n              37.64903402157866\n            ],\n            [\n              -84.5947265625,\n              38.71980474264239\n            ],\n            [\n              -82.6171875,\n              38.272688535980976\n            ],\n            [\n              -80.6396484375,\n              39.707186656826565\n            ],\n            [\n              -75.9375,\n              39.774769485295465\n            ],\n            [\n              -74.8388671875,\n              38.8225909761771\n            ],\n            [\n              -67.1044921875,\n              43.73935207915473\n            ],\n            [\n              -66.357421875,\n              45.398449976304086\n            ],\n            [\n              -68.15917968749999,\n              47.90161354142077\n            ],\n            [\n              -77.7392578125,\n              45.85941212790755\n            ],\n            [\n              -86.220703125,\n              49.410973199695846\n            ],\n            [\n              -97.3388671875,\n              49.35375571830993\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"4","issue":"28","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationDate":"2015-07-01","publicationStatus":"PW","scienceBaseUri":"576913b1e4b07657d19fefae","contributors":{"authors":[{"text":"Soranno, Patricia A.","contributorId":172104,"corporation":false,"usgs":false,"family":"Soranno","given":"Patricia","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":639828,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bissell, E.G.","contributorId":88823,"corporation":false,"usgs":true,"family":"Bissell","given":"E.G.","email":"","affiliations":[],"preferred":false,"id":639829,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cheruvelil, Kendra S.","contributorId":172029,"corporation":false,"usgs":false,"family":"Cheruvelil","given":"Kendra","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":639830,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Christel, Samuel T.","contributorId":169272,"corporation":false,"usgs":false,"family":"Christel","given":"Samuel","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":639831,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Collins, Sarah M.","contributorId":172181,"corporation":false,"usgs":false,"family":"Collins","given":"Sarah","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":639832,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Fergus, C. 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,{"id":70174152,"text":"70174152 - 2015 - Linking state-and-transition simulation and timber supply models for forest biomass production scenarios","interactions":[],"lastModifiedDate":"2018-12-20T12:54:49","indexId":"70174152","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3893,"text":"AIMS Environmental Science","active":true,"publicationSubtype":{"id":10}},"title":"Linking state-and-transition simulation and timber supply models for forest biomass production scenarios","docAbstract":"<p><span>We linked state-and-transition simulation models (STSMs) with an economics-based timber supply model to examine landscape dynamics in North Carolina through 2050 for three scenarios of forest biomass production. Forest biomass could be an important source of renewable energy in the future, but there is currently much uncertainty about how biomass production would impact landscapes. In the southeastern US, if forests become important sources of biomass for bioenergy, we expect increased land-use change and forest management. STSMs are ideal for simulating these landscape changes, but the amounts of change will depend on drivers such as timber prices and demand for forest land, which are best captured with forest economic models. We first developed state-and-transition model pathways in the ST-Sim software platform for 49 vegetation and land-use types that incorporated each expected type of landscape change. Next, for the three biomass production scenarios, the SubRegional Timber Supply Model (SRTS) was used to determine the annual areas of thinning and harvest in five broad forest types, as well as annual areas converted among those forest types, agricultural, and urban lands. The SRTS output was used to define area targets for STSMs in ST-Sim under two scenarios of biomass production and one baseline, business-as-usual scenario. We show that ST-Sim output matched SRTS targets in most cases. Landscape dynamics results indicate that, compared with the baseline scenario, forest biomass production leads to more forest and, specifically, more intensively managed forest on the landscape by 2050. Thus, the STSMs, informed by forest economics models, provide important information about potential landscape effects of bioenergy production.</span></p>","language":"English","publisher":"AIMS Press","doi":"10.3934/environsci.2015.2.180","usgsCitation":"Costanza, J., Abt, R.C., McKerrow, A., and Collazo, J., 2015, Linking state-and-transition simulation and timber supply models for forest biomass production scenarios: AIMS Environmental Science, v. 2, no. 2, p. 180-202, https://doi.org/10.3934/environsci.2015.2.180.","productDescription":"23 p.","startPage":"180","endPage":"202","ipdsId":"IP-063156","costCenters":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true},{"id":37226,"text":"Core Science Analytics, Synthesis, and Libraries","active":true,"usgs":true},{"id":38315,"text":"GAP Analysis Project","active":true,"usgs":true}],"links":[{"id":471975,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3934/environsci.2015.2.180","text":"Publisher Index Page"},{"id":328360,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2","issue":"2","publishingServiceCenter":{"id":8,"text":"Raleigh PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"57d28bade4b0571647d0f934","contributors":{"authors":[{"text":"Costanza, Jennifer","contributorId":74689,"corporation":false,"usgs":true,"family":"Costanza","given":"Jennifer","affiliations":[],"preferred":false,"id":648330,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Abt, Robert C.","contributorId":174475,"corporation":false,"usgs":false,"family":"Abt","given":"Robert","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":648331,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McKerrow, Alexa 0000-0002-8312-2905 amckerrow@usgs.gov","orcid":"https://orcid.org/0000-0002-8312-2905","contributorId":127753,"corporation":false,"usgs":true,"family":"McKerrow","given":"Alexa","email":"amckerrow@usgs.gov","affiliations":[{"id":208,"text":"Core Science Analytics and Synthesis","active":true,"usgs":true}],"preferred":true,"id":648332,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Collazo, Jaime jaime_collazo@usgs.gov","contributorId":2613,"corporation":false,"usgs":true,"family":"Collazo","given":"Jaime","email":"jaime_collazo@usgs.gov","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":false,"id":640999,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70174839,"text":"70174839 - 2015 - Point spread functions for earthquake source imaging: An interpretation based on seismic interferometry","interactions":[],"lastModifiedDate":"2016-07-18T14:03:58","indexId":"70174839","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1803,"text":"Geophysical Journal International","active":true,"publicationSubtype":{"id":10}},"title":"Point spread functions for earthquake source imaging: An interpretation based on seismic interferometry","docAbstract":"<p>Recently, various methods have been proposed and applied for earthquake source imaging, and theoretical relationships among the methods have been studied. In this study, we make a follow-up theoretical study to better understand the meanings of earthquake source imaging. For imaging problems, the point spread function (PSF) is used to describe the degree of blurring and degradation in an obtained image of a target object as a response of an imaging system. In this study, we formulate PSFs for earthquake source imaging. By calculating the PSFs, we find that waveform source inversion methods remove the effect of the PSF and are free from artifacts. However, the other source imaging methods are affected by the PSF and suffer from the effect of blurring and degradation due to the restricted distribution of receivers. Consequently, careful treatment of the effect is necessary when using the source imaging methods other than waveform inversions. Moreover, the PSF for source imaging is found to have a link with seismic interferometry with the help of the source-receiver reciprocity of Green&rsquo;s functions. In particular, the PSF can be related to Green&rsquo;s function for cases in which receivers are distributed so as to completely surround the sources. Furthermore, the PSF acts as a low-pass filter. Given these considerations, the PSF is quite useful for understanding the physical meaning of earthquake source imaging.</p>","language":"English","publisher":"Oxford University Press on behalf of The Royal Astronomical Society","publisherLocation":"Oxford, United Kingdom","doi":"10.1093/gji/ggv109","usgsCitation":"Nakahara, H., and Haney, M.M., 2015, Point spread functions for earthquake source imaging: An interpretation based on seismic interferometry: Geophysical Journal International, v. 202, no. 1, p. 54-61, https://doi.org/10.1093/gji/ggv109.","productDescription":"8 p.","startPage":"54","endPage":"61","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-060985","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":471973,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1093/gji/ggv109","text":"Publisher Index Page"},{"id":325375,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"202","issue":"1","publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"noUsgsAuthors":false,"publicationDate":"2015-04-21","publicationStatus":"PW","scienceBaseUri":"578dfdb5e4b0f1bea0e0f8c6","contributors":{"authors":[{"text":"Nakahara, Hisashi","contributorId":27332,"corporation":false,"usgs":true,"family":"Nakahara","given":"Hisashi","email":"","affiliations":[],"preferred":false,"id":642729,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Haney, Matthew M. 0000-0003-3317-7884 mhaney@usgs.gov","orcid":"https://orcid.org/0000-0003-3317-7884","contributorId":172948,"corporation":false,"usgs":true,"family":"Haney","given":"Matthew","email":"mhaney@usgs.gov","middleInitial":"M.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"preferred":true,"id":642728,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70187286,"text":"70187286 - 2015 - Use of phosphorus to reduce blooms of the benthic diatom <i>Didymosphenia geminata</i> in an oligotrophic stream","interactions":[],"lastModifiedDate":"2017-04-28T10:31:39","indexId":"70187286","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1699,"text":"Freshwater Science","active":true,"publicationSubtype":{"id":10}},"title":"Use of phosphorus to reduce blooms of the benthic diatom <i>Didymosphenia geminata</i> in an oligotrophic stream","docAbstract":"<p><span>Blooms of the benthic alga, </span><i>Didymosphenia geminata</i><span> [Lyngbye (Schmidt)], were first documented in Rapid Creek, South Dakota, in 2002 and have since been associated with changes to aquatic resources. Low concentration of P has been associated with </span><i>D. geminata</i><span> stalk development (i.e., blooms), so we considered elevating P as a possible method to reduce </span><i>D. geminata</i><span> blooms. We conducted 2 whole-stream P-enrichment experiments in Rapid Creek during 2007 and 2008. Enrichment with a slow-release fertilizer (Osmocote</span><sup>®</sup><span>: 14-14-14) in 2007 significantly reduced </span><i>D. geminata</i><span> blooms (indexed by </span><i>D. geminata</i><span> biomass) compared to upstream control sites. The reduction in biomass was less pronounced as distance from the enrichment source increased, a result indicating that P augmentation effectively decreased </span><i>D. geminata</i><span> biomass. In 2008, we implemented a before-after–control-impact (BACI) study to assess effects of a quick-release fertilizer (MAP: 11-52-0) on </span><i>D. geminata</i><span> biomass. The addition of 6 μg/L P to Rapid Creek resulted in a significant decrease in </span><i>D. geminata</i><span> biomass within 0.6 km downstream of the nutrient-addition point. Effects on </span><i>D. geminata</i><span> biomass were not evident further downstream. This study provides evidence to support the hypothesis that low P concentration regulates </span><i>D. geminata</i><span> blooms.</span></p>","language":"English","publisher":"The University of Chicago Press","doi":"10.1086/683038","usgsCitation":"James, D.A., Bothwell, M.L., Chipps, S.R., and Carreiro, J., 2015, Use of phosphorus to reduce blooms of the benthic diatom <i>Didymosphenia geminata</i> in an oligotrophic stream: Freshwater Science, v. 34, no. 4, p. 1272-1281, https://doi.org/10.1086/683038.","productDescription":"10 p.","startPage":"1272","endPage":"1281","ipdsId":"IP-049922","costCenters":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"links":[{"id":340592,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"4","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"590454a7e4b022cee40dc250","contributors":{"authors":[{"text":"James, Daniel A.","contributorId":41737,"corporation":false,"usgs":true,"family":"James","given":"Daniel","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":693438,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bothwell, Max L.","contributorId":113297,"corporation":false,"usgs":true,"family":"Bothwell","given":"Max","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":693439,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Chipps, Steven R. 0000-0001-6511-7582 steve_chipps@usgs.gov","orcid":"https://orcid.org/0000-0001-6511-7582","contributorId":2243,"corporation":false,"usgs":true,"family":"Chipps","given":"Steven","email":"steve_chipps@usgs.gov","middleInitial":"R.","affiliations":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"preferred":true,"id":693217,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Carreiro, John","contributorId":191554,"corporation":false,"usgs":false,"family":"Carreiro","given":"John","email":"","affiliations":[],"preferred":false,"id":693440,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70187289,"text":"70187289 - 2015 - Transport, dam passage, and size selection of adult Atlantic Salmon in the Penobscot River, Maine","interactions":[],"lastModifiedDate":"2017-04-27T16:37:51","indexId":"70187289","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Transport, dam passage, and size selection of adult Atlantic Salmon in the Penobscot River, Maine","docAbstract":"<p><span>Prior to 2012, returning adult Atlantic Salmon </span><i>Salmo salar</i><span> had to pass through fishways at three dams in the lower section of the Penobscot River, Maine: Veazie Dam (river kilometer [rkm] 48; removed in 2013), Great Works Dam (rkm 60; removed in 2012), and Milford Dam (rkm 62). To facilitate better passage through the lower river, a fish transport program was implemented in 2010 and 2011. Fish were captured at Veazie Dam and were either transported by truck above Milford Dam (TRKD group) or released into the head pond above Veazie Dam (run-of-the-river [ROR] group). To assess the efficacy of transport, we used PIT telemetry to compare the performance and passage of TRKD and ROR fish based on their (1) success in reaching one of the three dams upstream of Milford Dam, (2) time taken to reach an upstream dam (transit time), and (3) success in passing that upstream dam. In both years, the percentage of fish detected at upstream dams was higher for the TRKD group (82.4% in 2010; 78.6% in 2011) than for the ROR group (41.3% in 2010; 22.4% in 2011). In addition, median transit time was faster for TRKD fish (7 d in 2010; 5 d in 2011) than for ROR fish (23 d in 2010; 25 d in 2011). However, passage success through the upstream dams did not differ between the two release groups. Our analysis also revealed a strong, negative size-selective force on dam passage: larger fish were consistently less likely to successfully pass dams than smaller fish. Finally, environmental conditions also influenced passage success. Our analysis shows that the transport of adult Atlantic Salmon can be an effective means by which to increase migration success in systems where upstream passage is poor.</span></p>","language":"English","publisher":"Taylor & Francis","doi":"10.1080/02755947.2015.1099578","usgsCitation":"Sigourney, D.B., Zydlewski, J.D., Hughes, E., and Cox, O., 2015, Transport, dam passage, and size selection of adult Atlantic Salmon in the Penobscot River, Maine: North American Journal of Fisheries Management, v. 35, no. 6, p. 1164-1176, https://doi.org/10.1080/02755947.2015.1099578.","productDescription":"13 p.","startPage":"1164","endPage":"1176","ipdsId":"IP-050971","costCenters":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"links":[{"id":340545,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maine","otherGeospatial":"Penobscot River basin","volume":"35","issue":"6","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationDate":"2015-11-30","publicationStatus":"PW","scienceBaseUri":"59030327e4b0e862d230f73b","contributors":{"authors":[{"text":"Sigourney, Douglas B.","contributorId":103068,"corporation":false,"usgs":true,"family":"Sigourney","given":"Douglas","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":693298,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zydlewski, Joseph D. 0000-0002-2255-2303 jzydlewski@usgs.gov","orcid":"https://orcid.org/0000-0002-2255-2303","contributorId":2004,"corporation":false,"usgs":true,"family":"Zydlewski","given":"Joseph","email":"jzydlewski@usgs.gov","middleInitial":"D.","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true},{"id":365,"text":"Leetown Science Center","active":true,"usgs":true},{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"preferred":false,"id":693220,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hughes, Edward","contributorId":191500,"corporation":false,"usgs":false,"family":"Hughes","given":"Edward","email":"","affiliations":[],"preferred":false,"id":693299,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cox, Oliver","contributorId":169717,"corporation":false,"usgs":false,"family":"Cox","given":"Oliver","affiliations":[],"preferred":false,"id":693300,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70186018,"text":"70186018 - 2015 - Titanium, 2014","interactions":[],"lastModifiedDate":"2017-03-31T10:01:18","indexId":"70186018","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2755,"text":"Mining Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Titanium, 2014","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"SME","usgsCitation":"Bedinger, G.M., 2015, Titanium, 2014: Mining Engineering, v. 67, no. 7, p. 31-31.","productDescription":"1 p.","startPage":"31","endPage":"31","ipdsId":"IP-064953","costCenters":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"links":[{"id":338902,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":338901,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://me.smenet.org/abstract.cfm?preview=1&articleID=6022&page=31"}],"volume":"67","issue":"7","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58df6ac4e4b02ff32c6aea4f","contributors":{"authors":[{"text":"Bedinger, George M. gbedinger@usgs.gov","contributorId":4567,"corporation":false,"usgs":true,"family":"Bedinger","given":"George","email":"gbedinger@usgs.gov","middleInitial":"M.","affiliations":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"preferred":true,"id":687358,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70186042,"text":"70186042 - 2015 - Peat, 2014","interactions":[],"lastModifiedDate":"2017-03-31T09:57:05","indexId":"70186042","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2755,"text":"Mining Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Peat, 2014","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"SME","usgsCitation":"Apodaca, L.E., 2015, Peat, 2014: Mining Engineering, v. 67, no. 7, p. 31-31.","productDescription":"1 p.","startPage":"31","endPage":"31","ipdsId":"IP-064568","costCenters":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"links":[{"id":338894,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":338893,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://me.smenet.org/abstract.cfm?preview=1&articleID=6022&page=31"}],"volume":"67","issue":"7","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58df6ac2e4b02ff32c6aea47","contributors":{"authors":[{"text":"Apodaca, Lori E. lapodaca@usgs.gov","contributorId":1844,"corporation":false,"usgs":true,"family":"Apodaca","given":"Lori","email":"lapodaca@usgs.gov","middleInitial":"E.","affiliations":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"preferred":true,"id":687445,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70157142,"text":"70157142 - 2015 - Ecosystem carbon stocks and sequestration potential of federal lands across the conterminous United States","interactions":[],"lastModifiedDate":"2017-08-29T09:42:10","indexId":"70157142","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2982,"text":"PNAS","active":true,"publicationSubtype":{"id":10}},"title":"Ecosystem carbon stocks and sequestration potential of federal lands across the conterminous United States","docAbstract":"<p><span>Federal lands across the conterminous United States (CONUS) account for 23.5% of the CONUS terrestrial area but have received no systematic studies on their ecosystem carbon (C) dynamics and contribution to the national C budgets. The methodology for US Congress-mandated national biological C sequestration potential assessment was used to evaluate ecosystem C dynamics in CONUS federal lands at present and in the future under three Intergovernmental Panel on Climate Change Special Report on Emission Scenarios (IPCC SRES) A1B, A2, and B1. The total ecosystem C stock was estimated as 11,613 Tg C in 2005 and projected to be 13,965 Tg C in 2050, an average increase of 19.4% from the baseline. The projected annual C sequestration rate (in kilograms of carbon per hectare per year) from 2006 to 2050 would be sinks of 620 and 228 for forests and grasslands, respectively, and C sources of 13 for shrublands. The federal lands&rsquo; contribution to the national ecosystem C budget could decrease from 23.3% in 2005 to 20.8% in 2050. The C sequestration potential in the future depends not only on the footprint of individual ecosystems but also on each federal agency&rsquo;s land use and management. The results presented here update our current knowledge about the baseline ecosystem C stock and sequestration potential of federal lands, which would be useful for federal agencies to decide management practices to achieve the national greenhouse gas (GHG) mitigation goal.</span></p>","language":"English","publisher":"National Academy of Sciences of the United States of America","doi":"10.1073/pnas.1512542112","usgsCitation":"Tan, Z., Liu, S., Sohl, T.L., Wu, Y., and Young, C.J., 2015, Ecosystem carbon stocks and sequestration potential of federal lands across the conterminous United States: PNAS, v. 112, no. 41, p. 12723-12728, https://doi.org/10.1073/pnas.1512542112.","productDescription":"6 p.","startPage":"12723","endPage":"12728","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-068739","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":471969,"rank":0,"type":{"id":40,"text":"Open Access 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 \"}}]}\n","volume":"112","issue":"41","publishingServiceCenter":{"id":4,"text":"Rolla PSC"},"noUsgsAuthors":false,"publicationDate":"2015-09-28","publicationStatus":"PW","scienceBaseUri":"56261452e4b0fb9a11dd75fe","chorus":{"doi":"10.1073/pnas.1512542112","url":"http://dx.doi.org/10.1073/pnas.1512542112","publisher":"Proceedings of the National Academy of Sciences","authors":"Tan Zhengxi, Liu Shuguang, Sohl Terry L., Wu Yiping, Young Claudia J.","journalName":"Proceedings of the National Academy of Sciences","publicationDate":"9/28/2015","auditedOn":"4/16/2016","publiclyAccessibleDate":"4/13/2016"},"contributors":{"authors":[{"text":"Tan, Zhengxi 0000-0002-4136-0921 ztan@usgs.gov","orcid":"https://orcid.org/0000-0002-4136-0921","contributorId":2945,"corporation":false,"usgs":true,"family":"Tan","given":"Zhengxi","email":"ztan@usgs.gov","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":571841,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Liu, Shuguang 0000-0002-6027-3479 sliu@usgs.gov","orcid":"https://orcid.org/0000-0002-6027-3479","contributorId":147403,"corporation":false,"usgs":true,"family":"Liu","given":"Shuguang","email":"sliu@usgs.gov","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":571842,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sohl, Terry L. 0000-0002-9771-4231 sohl@usgs.gov","orcid":"https://orcid.org/0000-0002-9771-4231","contributorId":648,"corporation":false,"usgs":true,"family":"Sohl","given":"Terry","email":"sohl@usgs.gov","middleInitial":"L.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true},{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"preferred":true,"id":571843,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wu, Yiping ywu@usgs.gov","contributorId":987,"corporation":false,"usgs":true,"family":"Wu","given":"Yiping","email":"ywu@usgs.gov","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":571844,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Young, Claudia J. 0000-0002-0859-7206 cyoung@usgs.gov","orcid":"https://orcid.org/0000-0002-0859-7206","contributorId":2770,"corporation":false,"usgs":true,"family":"Young","given":"Claudia","email":"cyoung@usgs.gov","middleInitial":"J.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":571845,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70187341,"text":"70187341 - 2015 - Comparing ecoregional classifications for natural areas management in the Klamath Region, USA","interactions":[],"lastModifiedDate":"2019-12-17T09:26:39","indexId":"70187341","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2821,"text":"Natural Areas Journal","active":true,"publicationSubtype":{"id":10}},"title":"Comparing ecoregional classifications for natural areas management in the Klamath Region, USA","docAbstract":"<p><span>We compared three existing ecoregional classification schemes (Bailey, Omernik, and World Wildlife Fund) with two derived schemes (Omernik Revised and Climate Zones) to explore their effectiveness in explaining species distributions and to better understand natural resource geography in the Klamath Region, USA. We analyzed presence/absence data derived from digital distribution maps for trees, amphibians, large mammals, small mammals, migrant birds, and resident birds using three statistical analyses of classification accuracy (Analysis of Similarity, Canonical Analysis of Principal Coordinates, and Classification Strength). The classifications were roughly comparable in classification accuracy, with Omernik Revised showing the best overall performance. Trees showed the strongest fidelity to the classifications, and large mammals showed the weakest fidelity. We discuss the implications for regional biogeography and describe how intermediate resolution ecoregional classifications may be appropriate for use as natural areas management domains.</span></p>","language":"English","publisher":"Natural Areas Association","doi":"10.3375/043.035.0301","usgsCitation":"Sarr, D.A., Duff, A., Dinger, E.C., Shafer, S.L., Wing, M., Seavy, N.E., and Alexander, J.D., 2015, Comparing ecoregional classifications for natural areas management in the Klamath Region, USA: Natural Areas Journal, v. 35, no. 3, p. 360-377, https://doi.org/10.3375/043.035.0301.","productDescription":"18 p.","startPage":"360","endPage":"377","ipdsId":"IP-046147","costCenters":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"links":[{"id":340689,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Klamath Region","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -125.00244140625,\n              38.66835610151506\n            ],\n            [\n              -120.80566406250001,\n              38.66835610151506\n            ],\n            [\n              -120.80566406250001,\n              42.79540065303723\n            ],\n            [\n              -125.00244140625,\n              42.79540065303723\n            ],\n            [\n              -125.00244140625,\n              38.66835610151506\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"35","issue":"3","publishingServiceCenter":{"id":2,"text":"Denver PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5908492be4b0fc4e448ffd60","contributors":{"authors":[{"text":"Sarr, Daniel A. dsarr@usgs.gov","contributorId":191593,"corporation":false,"usgs":false,"family":"Sarr","given":"Daniel","email":"dsarr@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":false,"id":693543,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Duff, Andrew","contributorId":168620,"corporation":false,"usgs":false,"family":"Duff","given":"Andrew","email":"","affiliations":[],"preferred":false,"id":693544,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dinger, Eric C.","contributorId":191594,"corporation":false,"usgs":false,"family":"Dinger","given":"Eric","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":693545,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shafer, Sarah L. 0000-0003-3739-2637 sshafer@usgs.gov","orcid":"https://orcid.org/0000-0003-3739-2637","contributorId":1684,"corporation":false,"usgs":true,"family":"Shafer","given":"Sarah","email":"sshafer@usgs.gov","middleInitial":"L.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":false,"id":693542,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wing, Michael","contributorId":191596,"corporation":false,"usgs":false,"family":"Wing","given":"Michael","email":"","affiliations":[],"preferred":false,"id":693547,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Seavy, Nathaniel E.","contributorId":191595,"corporation":false,"usgs":false,"family":"Seavy","given":"Nathaniel","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":693546,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Alexander, John D.","contributorId":191597,"corporation":false,"usgs":false,"family":"Alexander","given":"John","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":693548,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70176119,"text":"70176119 - 2015 - Exposure and food web transfer of pharmaceuticals in ospreys (Pandion haliaetus): Predictive model and empirical data","interactions":[],"lastModifiedDate":"2018-09-04T15:59:22","indexId":"70176119","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2006,"text":"Integrated Environmental Assessment and Management","active":true,"publicationSubtype":{"id":10}},"title":"Exposure and food web transfer of pharmaceuticals in ospreys (Pandion haliaetus): Predictive model and empirical data","docAbstract":"<p><span>The osprey (</span><i>Pandion haliaetus</i><span>) is a well-known sentinel of environmental contamination, yet no studies have traced pharmaceuticals through the water&ndash;fish&ndash;osprey food web. A screening-level exposure assessment was used to evaluate the bioaccumulation potential of 113 pharmaceuticals and metabolites, and an artificial sweetener in this food web. Hypothetical concentrations in water reflecting &ldquo;wastewater effluent dominated&rdquo; or &ldquo;dilution dominated&rdquo; scenarios were combined with pH-specific bioconcentration factors (BCFs) to predict uptake in fish. Residues in fish and osprey food intake rate were used to calculate the daily intake (DI) of compounds by an adult female osprey. Fourteen pharmaceuticals and a drug metabolite with a BCF greater than 100 and a DI greater than 20&thinsp;&micro;g/kg were identified as being most likely to exceed the adult human therapeutic dose (HTD). These 15 compounds were also evaluated in a 40 day cumulative dose exposure scenario using first-order kinetics to account for uptake and elimination. Assuming comparable absorption to humans, the half-lives (t</span><span>1/2</span><span>) for an adult osprey to reach the HTD within 40 days were calculated. For 3 of these pharmaceuticals, the estimated t</span><span>1/2</span><span>&nbsp;in ospreys was less than that for humans, and thus an osprey might theoretically reach or exceed the HTD in 3 to 7 days. To complement the exposure model, 24 compounds were quantified in water, fish plasma, and osprey nestling plasma from 7 potentially impaired locations in Chesapeake Bay. Of the 18 analytes detected in water, 8 were found in fish plasma, but only 1 in osprey plasma (the antihypertensive diltiazem). Compared to diltiazem detection rate and concentrations in water (10/12 detects, &lt;method detection limits [MDL]&ndash;173&thinsp;ng/L), there was a lower detection frequency in fish (31/233 detects, &lt;MDL&ndash;2400&thinsp;ng/L); however when present in fish, all values exceeded the maximum diltiazem concentration found in water. Diltiazem was found in all 69 osprey plasma samples (540&ndash;8630&thinsp;ng/L), with 41% of these samples exceeding maximum concentrations found in fish. Diltiazem levels in fish and osprey plasma were below the human therapeutic plasma concentration (30&thinsp;000&thinsp;ng/L). Effect thresholds for diltiazem are unknown in ospreys at this time, and there is no evidence to suggest adverse effects. This screening-level exposure model can help identify those compounds that warrant further investigation in high-trophic level species.</span></p>","language":"English","publisher":"Wiley","doi":"10.1002/ieam.1570","usgsCitation":"Lazarus, R.S., Rattner, B.A., Du, B., McGowan, P.C., Blazer, V., and Ottinger, M.A., 2015, Exposure and food web transfer of pharmaceuticals in ospreys (Pandion haliaetus): Predictive model and empirical data: Integrated Environmental Assessment and Management, v. 11, no. 1, p. 118-129, https://doi.org/10.1002/ieam.1570.","productDescription":"12 p.","startPage":"118","endPage":"129","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-057952","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true},{"id":34983,"text":"Contaminant Biology Program","active":true,"usgs":true}],"links":[{"id":327898,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"11","issue":"1","noUsgsAuthors":false,"publicationDate":"2014-08-01","publicationStatus":"PW","scienceBaseUri":"57c16836e4b0f2f0ceb907db","contributors":{"authors":[{"text":"Lazarus, Rebecca S. 0000-0003-1731-6469 rlazarus@usgs.gov","orcid":"https://orcid.org/0000-0003-1731-6469","contributorId":5594,"corporation":false,"usgs":true,"family":"Lazarus","given":"Rebecca","email":"rlazarus@usgs.gov","middleInitial":"S.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":647180,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rattner, Barnett A. 0000-0003-3676-2843 brattner@usgs.gov","orcid":"https://orcid.org/0000-0003-3676-2843","contributorId":4142,"corporation":false,"usgs":true,"family":"Rattner","given":"Barnett","email":"brattner@usgs.gov","middleInitial":"A.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":647181,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Du, Bowen","contributorId":149285,"corporation":false,"usgs":false,"family":"Du","given":"Bowen","email":"","affiliations":[{"id":16605,"text":"Department of Environmental Science and the Center for Reservoir and Aquatic Systems Research (CRASR), Baylor University, Waco, TX","active":true,"usgs":false}],"preferred":false,"id":647182,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McGowan, Peter C.","contributorId":13867,"corporation":false,"usgs":false,"family":"McGowan","given":"Peter","email":"","middleInitial":"C.","affiliations":[{"id":6987,"text":"U.S. Fish and Wildlife Sevice","active":true,"usgs":false}],"preferred":false,"id":647183,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Blazer, Vicki S. 0000-0001-6647-9614 vblazer@usgs.gov","orcid":"https://orcid.org/0000-0001-6647-9614","contributorId":150384,"corporation":false,"usgs":true,"family":"Blazer","given":"Vicki S.","email":"vblazer@usgs.gov","affiliations":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"preferred":true,"id":647184,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ottinger, Mary Ann","contributorId":26422,"corporation":false,"usgs":false,"family":"Ottinger","given":"Mary","email":"","middleInitial":"Ann","affiliations":[{"id":7083,"text":"University of Maryland","active":true,"usgs":false}],"preferred":false,"id":647185,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70159788,"text":"70159788 - 2015 - Hydraulic fracturing water use variability in the United States and potential environmental implications","interactions":[],"lastModifiedDate":"2015-11-23T10:26:47","indexId":"70159788","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Hydraulic fracturing water use variability in the United States and potential environmental implications","docAbstract":"<p>Until now, up-to-date, comprehensive, spatial, national-scale data on hydraulic fracturing water volumes have been lacking. Water volumes used (injected) to hydraulically fracture over 263,859 oil and gas wells drilled between 2000 and 2014 were compiled and used to create the first U.S. map of hydraulic fracturing water use. Although median annual volumes of 15,275 m3 and 19,425 m3 of water per well was used to hydraulically fracture individual horizontal oil and gas wells, respectively, in 2014, about 42% of wells were actually either vertical or directional, which required less than 2600 m3 water per well. The highest average hydraulic fracturing water usage (10,000&minus;36,620 m3 per well) in watersheds across the United States generally correlated with shale-gas areas (versus coalbed methane, tight oil, or tight gas) where the greatest proportion of hydraulically fractured wells were horizontally drilled, reflecting that the natural reservoir properties influence water use. This analysis also demonstrates that many oil and gas resources within a given basin are developed using a mix of horizontal, vertical, and some directional wells, explaining why large volume hydraulic fracturing water usage is not widespread. This spatial variability in hydraulic fracturing water use relates to the potential for environmental impacts such as water availability, water quality, wastewater disposal, and possible wastewater injection-induced earthquakes.</p>","language":"English","publisher":"Wiley","doi":"10.1002/2015WR017278","usgsCitation":"Gallegos, T.J., Varela, B.A., Haines, S.S., and Engle, M.A., 2015, Hydraulic fracturing water use variability in the United States and potential environmental implications: Water Resources Research, v. 51, no. 7, p. 5839-5845, https://doi.org/10.1002/2015WR017278.","productDescription":"7 p.","startPage":"5839","endPage":"5845","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-063868","costCenters":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":471971,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/2015wr017278","text":"Publisher Index 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,{"id":70156790,"text":"70156790 - 2015 - NACSN, note 67--Application for revision of Articles 36 and 37, Lithodemic units of the North American stratigraphic code","interactions":[],"lastModifiedDate":"2015-09-24T11:03:56","indexId":"70156790","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3481,"text":"Stratigraphy","active":true,"publicationSubtype":{"id":10}},"title":"NACSN, note 67--Application for revision of Articles 36 and 37, Lithodemic units of the North American stratigraphic code","docAbstract":"<p><span>Currently the North American Stratigraphic Code, (NACSN 2005, Article 37) sets restrictions on the use of the term &ldquo;complex&rdquo; for lithodemic units. With exceptions for &ldquo;volcanic complex&rdquo; and &ldquo;structural complex,&rdquo; a complex must consist of more than one genetic class of rock (i.e., sedimentary, igneous or metamorphic). Thus, the use of the term &ldquo;complex&rdquo; to describe masses of intrusive rocks is not allowed. Asimilar restriction is also included in a recent British Geological Survey proposal for using lithodemic units to classify igneous rocks (Gillespie et al. 2008).Currently the North American Stratigraphic Code, (NACSN 2005, Article 37) sets restrictions on the use of the term &ldquo;complex&rdquo; for lithodemic units. With exceptions for &ldquo;volcanic complex&rdquo; and &ldquo;structural complex,&rdquo; a complex must consist of more than one genetic class of rock (i.e., sedimentary, igneous or metamorphic). Thus, the use of the term &ldquo;complex&rdquo; to describe masses of intrusive rocks is not allowed. Asimilar restriction is also included in a recent British Geological Survey proposal for using lithodemic units to classify igneous rocks (Gillespie et al. 2008).</span></p>","language":"English","publisher":"Micropaleontology Press","usgsCitation":"Easton, R.M., Edwards, L.E., Orndorff, R.C., Duguet, M., and Ferrusquia-Villafranca, I., 2015, NACSN, note 67--Application for revision of Articles 36 and 37, Lithodemic units of the North American stratigraphic code: Stratigraphy, v. 12, no. 1, p. 39-45.","productDescription":"7 p.","startPage":"39","endPage":"45","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-063649","costCenters":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"links":[{"id":308496,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":308495,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.micropress.org/microaccess/stratigraphy/issue-316/article-1932"}],"volume":"12","issue":"1","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56051edbe4b058f706e512f8","contributors":{"authors":[{"text":"Easton, Robert M.","contributorId":139939,"corporation":false,"usgs":false,"family":"Easton","given":"Robert","email":"","middleInitial":"M.","affiliations":[{"id":13320,"text":"Ontario Geological Survey","active":true,"usgs":false}],"preferred":false,"id":570551,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Edwards, Lucy E. 0000-0003-4075-3317 leedward@usgs.gov","orcid":"https://orcid.org/0000-0003-4075-3317","contributorId":2647,"corporation":false,"usgs":true,"family":"Edwards","given":"Lucy","email":"leedward@usgs.gov","middleInitial":"E.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true},{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":true,"id":570552,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Orndorff, Randall C. 0000-0002-8956-5803 rorndorf@usgs.gov","orcid":"https://orcid.org/0000-0002-8956-5803","contributorId":2739,"corporation":false,"usgs":true,"family":"Orndorff","given":"Randall","email":"rorndorf@usgs.gov","middleInitial":"C.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true},{"id":501,"text":"Office of Science Quality and Integrity","active":true,"usgs":true},{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":570550,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Duguet, Manuel","contributorId":147927,"corporation":false,"usgs":false,"family":"Duguet","given":"Manuel","email":"","affiliations":[],"preferred":false,"id":573270,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ferrusquia-Villafranca, Ismael","contributorId":37529,"corporation":false,"usgs":true,"family":"Ferrusquia-Villafranca","given":"Ismael","email":"","affiliations":[],"preferred":false,"id":573271,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70173499,"text":"70173499 - 2015 - Is income breeding an appropriate construct for waterfowl?","interactions":[],"lastModifiedDate":"2017-12-27T11:51:27","indexId":"70173499","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2409,"text":"Journal of Ornithology","active":true,"publicationSubtype":{"id":10}},"title":"Is income breeding an appropriate construct for waterfowl?","docAbstract":"<p><span>Breeding birds use a range of nutrient accumulation and allocation strategies to meet the nutritional demands of clutch formation and incubation. On one end of the spectrum, capital breeders use stored nutrients acquired prior to clutch formation and incubation to sustain metabolism during reproduction, while on the opposite end, income breeders derive nutrients solely from exogenous sources on the breeding grounds. Blue-winged Teal (</span><i class=\"EmphasisTypeItalic \">Anas discors</i><span>) are an ideal candidate to test for adoption of an income strategy among migratory waterfowl because of their small body size, temperate breeding range, and timing of reproduction relative to pulses in nutrient availability within breeding habitats. We collected migrating and pre-breeding Blue-winged Teal (</span><i class=\"EmphasisTypeItalic \">n</i><span>&nbsp;=&nbsp;110) during the warmest spring in over a century in the southern edge of the species&rsquo; breeding range, which produced ideal conditions to test for adoption of an income breeding strategy among migratory waterfowl. Regression analyses revealed that females accumulated protein and fat reserves early in follicle development and appeared to mobilize at least some reserves coincident with the onset of clutch formation. Accumulation and subsequent mobilization of nutrient reserves was inconsistent with adherence to an income breeding strategy and suggested breeding Blue-winged Teal used capital (albeit locally acquired) for reproduction. Our results add to existing knowledge on the ubiquity of endogenous nutrient reserve accumulation prior to and during reproduction by waterfowl, perhaps suggesting endogenous nutrient reserves are universally used for clutch formation or incubation to some degree. If indeed Blue-winged Teal and other waterfowl universally use capital for breeding, research and conservation efforts should shift from evaluating whether an income breeding strategy is used and focus on when and where necessary capital is acquired prior to clutch formation.</span></p>","language":"English","publisher":"Springer Berlin Heidelberg","doi":"10.1007/s10336-015-1200-y","usgsCitation":"Janke, A.K., Anteau, M.J., Markl, N., and Stafford, J.D., 2015, Is income breeding an appropriate construct for waterfowl?: Journal of Ornithology, v. 165, no. 3, p. 755-762, https://doi.org/10.1007/s10336-015-1200-y.","productDescription":"8 p.","startPage":"755","endPage":"762","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-058552","costCenters":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true},{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":323424,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"165","issue":"3","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationDate":"2015-03-14","publicationStatus":"PW","scienceBaseUri":"575a9333e4b04f417c27515c","contributors":{"authors":[{"text":"Janke, Adam K. 0000-0003-2781-7857","orcid":"https://orcid.org/0000-0003-2781-7857","contributorId":130959,"corporation":false,"usgs":false,"family":"Janke","given":"Adam","email":"","middleInitial":"K.","affiliations":[{"id":7176,"text":"Dept of Natl Res Mgmt, SDSU, Brookings, SD","active":true,"usgs":false}],"preferred":false,"id":638321,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Anteau, Michael J. 0000-0002-5173-5870 manteau@usgs.gov","orcid":"https://orcid.org/0000-0002-5173-5870","contributorId":3427,"corporation":false,"usgs":true,"family":"Anteau","given":"Michael","email":"manteau@usgs.gov","middleInitial":"J.","affiliations":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":638322,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Markl, Nicholas","contributorId":171697,"corporation":false,"usgs":false,"family":"Markl","given":"Nicholas","email":"","affiliations":[],"preferred":false,"id":638323,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stafford, Joshua D. jstafford@usgs.gov","contributorId":4267,"corporation":false,"usgs":true,"family":"Stafford","given":"Joshua","email":"jstafford@usgs.gov","middleInitial":"D.","affiliations":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"preferred":true,"id":637201,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70173448,"text":"70173448 - 2015 - Spatial and temporal variability in growth of southern flounder (<i>Paralichthys lethostigma</i>)","interactions":[],"lastModifiedDate":"2016-06-20T12:50:02","indexId":"70173448","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1661,"text":"Fisheries Research","active":true,"publicationSubtype":{"id":10}},"title":"Spatial and temporal variability in growth of southern flounder (<i>Paralichthys lethostigma</i>)","docAbstract":"<p><span>Delineation of stock structure is important for understanding the ecology and management of many fish populations, particularly those with wide-ranging distributions and high levels of harvest. Southern flounder (</span><i>Paralichthys lethostigma</i><span>) is a popular commercial and recreational species along the southeast Atlantic coast and Gulf of Mexico, USA. Recent studies have provided genetic and otolith morphology evidence that the Gulf of Mexico and Atlantic Ocean stocks differ. Using age and growth data from four states (Texas, Alabama, South Carolina, and North Carolina) we expanded upon the traditional von Bertalanffy model in order to compare growth rates of putative geographic stocks of southern flounder. We improved the model fitting process by adding a hierarchical Bayesian framework to allow each parameter to vary spatially or temporally as a random effect, as well as log transforming the three model parameters (</span><i>L</i><sub>&infin;</sub><span>,&nbsp;</span><i>K</i><span>, and</span><i>t</i><sub>0</sub><span>). Multiple comparisons of parameters showed that growth rates varied (even within states) for females, but less for males. Growth rates were also consistent through time, when long-term data were available. Since within-basin populations are thought to be genetically well-mixed, our results suggest that consistent small-scale environmental conditions (i.e., within estuaries) likely drive growth rates and should be considered when developing broader scale management plans.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.fishres.2015.03.009","usgsCitation":"Midway, S.R., Wagner, T., Arnott, S.A., Biondo, P., Martinez-Andrade, F., and Wadsworth, T.F., 2015, Spatial and temporal variability in growth of southern flounder (<i>Paralichthys lethostigma</i>): Fisheries Research, v. 167, p. 323-332, https://doi.org/10.1016/j.fishres.2015.03.009.","productDescription":"10 p.","startPage":"323","endPage":"332","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-057170","costCenters":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"links":[{"id":323997,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"167","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"576913e7e4b07657d19ff26e","contributors":{"authors":[{"text":"Midway, Stephen R.","contributorId":172159,"corporation":false,"usgs":false,"family":"Midway","given":"Stephen","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":639801,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wagner, Tyler 0000-0003-1726-016X twagner@usgs.gov","orcid":"https://orcid.org/0000-0003-1726-016X","contributorId":1050,"corporation":false,"usgs":true,"family":"Wagner","given":"Tyler","email":"twagner@usgs.gov","affiliations":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"preferred":true,"id":637142,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Arnott, Stephen A.","contributorId":172168,"corporation":false,"usgs":false,"family":"Arnott","given":"Stephen","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":639802,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Biondo, Patrick","contributorId":172169,"corporation":false,"usgs":false,"family":"Biondo","given":"Patrick","email":"","affiliations":[],"preferred":false,"id":639803,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Martinez-Andrade, Fernando","contributorId":172170,"corporation":false,"usgs":false,"family":"Martinez-Andrade","given":"Fernando","email":"","affiliations":[],"preferred":false,"id":639804,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Wadsworth, Thomas F.","contributorId":172171,"corporation":false,"usgs":false,"family":"Wadsworth","given":"Thomas","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":639805,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70191255,"text":"70191255 - 2015 - The distribution of selected elements and minerals in soil of the conterminous United States","interactions":[],"lastModifiedDate":"2025-05-14T19:08:03.94424","indexId":"70191255","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2302,"text":"Journal of Geochemical Exploration","active":true,"publicationSubtype":{"id":10}},"title":"The distribution of selected elements and minerals in soil of the conterminous United States","docAbstract":"<p><span>In 2007, the U.S. Geological Survey initiated a low-density (1 site per 1600&nbsp;km</span><sup>2</sup><span>, 4857 sites) geochemical and mineralogical survey of soil of the conterminous United States as part of the North American Soil Geochemical Landscapes Project. Three soil samples were collected, if possible, from each site; (1) a sample from a depth of 0 to 5&nbsp;cm, (2) a composite of the soil A-horizon, and (3) a deeper sample from the soil C-horizon or, if the top of the C-horizon was at a depth greater than 100&nbsp;cm, from a depth of approximately 80–100&nbsp;cm. The &lt;&nbsp;2&nbsp;mm fraction of each sample was analysed for a suite of 45 major and trace elements following near-total multi-acid digestion. The major mineralogical components in samples from the soil A- and C-horizons were determined by a quantitative X-ray diffraction method using Rietveld refinement. Sampling ended in 2010 and chemical and mineralogical analyses were completed in May 2013. Maps of the conterminous United States showing predicted element and mineral concentrations were interpolated from actual soil data for each soil sample type by an inverse distance weighted (IDW) technique using ArcGIS software. Regional- and national-scale map patterns for selected elements and minerals apparent in interpolated maps are described here in the context of soil-forming factors and possible human inputs. These patterns can be related to (1) soil parent materials, for example, in the distribution of quartz, (2) climate impacts, for example, in the distribution of feldspar and kaolinite, (3) soil age, for example, in the distribution of carbonate in young glacial deposits, and (4) possible anthropogenic loading of phosphorus (P) and lead (Pb) to surface soil. This new geochemical and mineralogical data set for the conterminous United States represents a major step forward from prior national-scale soil geochemistry data and provides a robust soil data framework for the United States now and into the future.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.gexplo.2015.01.006","usgsCitation":"Woodruff, L.G., Cannon, W.F., Smith, D.B., and Solano, F., 2015, The distribution of selected elements and minerals in soil of the conterminous United States: Journal of Geochemical Exploration, v. 154, p. 49-60, https://doi.org/10.1016/j.gexplo.2015.01.006.","productDescription":"12 p.","startPage":"49","endPage":"60","ipdsId":"IP-054587","costCenters":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":346320,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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,{"id":70162083,"text":"70162083 - 2015 - Predicting redox conditions in groundwater at a regional scale","interactions":[],"lastModifiedDate":"2016-03-07T12:03:19","indexId":"70162083","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","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":"Predicting redox conditions in groundwater at a regional scale","docAbstract":"<p>Defining the oxic-suboxic interface is often critical for determining pathways for nitrate transport in groundwater and to streams at the local scale. Defining this interface on a regional scale is complicated by the spatial variability of reaction rates. The probability of oxic groundwater in the Chesapeake Bay watershed was predicted by relating dissolved O<sub>2</sub> concentrations in groundwater samples to indicators of residence time and/or electron donor availability using logistic regression. Variables that describe surficial geology, position in the flow system, and soil drainage were important predictors of oxic water. The probability of encountering oxic groundwater at a 30 m depth and the depth to the bottom of the oxic layer were predicted for the Chesapeake Bay watershed. The influence of depth to the bottom of the oxic layer on stream nitrate concentrations and time lags (i.e., time period between land application of nitrogen and its effect on streams) are illustrated using model simulations for hypothetical basins. Regional maps of the probability of oxic groundwater should prove useful as indicators of groundwater susceptibility and stream susceptibility to contaminant sources derived from groundwater.</p>","language":"English","publisher":"American Chemical Society","doi":"10.1021/acs.est.5b01869","usgsCitation":"Tesoriero, A., Terziotti, S., and Abrams, D.B., 2015, Predicting redox conditions in groundwater at a regional scale: Environmental Science & Technology, v. 49, no. 16, p. 9657-9664, https://doi.org/10.1021/acs.est.5b01869.","productDescription":"8 p.","startPage":"9657","endPage":"9664","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-064245","costCenters":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"links":[{"id":438691,"rank":0,"type":{"id":30,"text":"Data Release"},"url":"https://doi.org/10.5066/F78C9TC5","text":"USGS data release","linkHelpText":"Depth to 50 percent probability of oxic conditions, Chesapeake Bay 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,{"id":70159502,"text":"70159502 - 2015 - Water's Way at Sleepers River watershed – revisiting flow generation in a post-glacial landscape, Vermont USA","interactions":[],"lastModifiedDate":"2018-04-02T15:26:40","indexId":"70159502","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"title":"Water's Way at Sleepers River watershed – revisiting flow generation in a post-glacial landscape, Vermont USA","docAbstract":"<p>The Sleepers River Research Watershed (SRRW) in Vermont, USA, has been the site of active hydrologic research since 1959 and was the setting where Dunne and Black demonstrated the importance and controls of saturation-excess overland flow (SOF) on streamflow generation. Here, we review the early studies from the SRRW and show how they guided our conceptual approach to hydrologic research at the SRRW during the most recent 25&thinsp;years. In so doing, we chronicle a shift in the field from early studies that relied exclusively on hydrometric measurements to today's studies that include chemical and isotopic approaches to further elucidate streamflow generation mechanisms. Highlights of this evolution in hydrologic understanding include the following: (i) confirmation of the importance of SOF to streamflow generation, and at larger scales than first imagined; (ii) stored catchment water dominates stream response, except under unusual conditions such as deep frozen ground; (iii) hydrometric, chemical and isotopic approaches to hydrograph separation yield consistent and complementary results; (iv) nitrate and sulfate isotopic compositions specific to atmospheric inputs constrain new water contributions to streamflow; and (v) convergent areas, or &lsquo;hillslope hollows&rsquo;, contribute disproportionately to event hydrographs. We conclude by summarizing some remaining challenges that lead us to a vision for the future of research at the SRRW to address fundamental questions in the catchment sciences.</p>","language":"English","publisher":"Wiley","doi":"10.1002/hyp.10377","usgsCitation":"Shanley, J.B., Sebestyen, S.D., McDonnell, J.J., McGlynn, B.L., and Dunne, T., 2015, Water's Way at Sleepers River watershed – revisiting flow generation in a post-glacial landscape, Vermont USA: Hydrological Processes, v. 29, no. 16, p. 3447-3459, https://doi.org/10.1002/hyp.10377.","productDescription":"13 p.","startPage":"3447","endPage":"3459","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-060314","costCenters":[{"id":405,"text":"NH/VT office of New England Water Science Center","active":true,"usgs":true}],"links":[{"id":471982,"rank":0,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://escholarship.org/uc/item/0vk658z6","text":"External Repository"},{"id":311199,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Vermont","otherGeospatial":"Sleepers River watershed","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -72.07829475402832,\n              44.43825371823474\n            ],\n            [\n              -72.07829475402832,\n              44.45688095465622\n            ],\n            [\n              -72.05168724060057,\n              44.45688095465622\n            ],\n            [\n              -72.05168724060057,\n              44.43825371823474\n            ],\n            [\n              -72.07829475402832,\n              44.43825371823474\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"29","issue":"16","publishingServiceCenter":{"id":11,"text":"Pembroke PSC"},"noUsgsAuthors":false,"publicationDate":"2014-11-27","publicationStatus":"PW","scienceBaseUri":"5645c660e4b0e2669b30f233","contributors":{"authors":[{"text":"Shanley, James B. 0000-0002-4234-3437 jshanley@usgs.gov","orcid":"https://orcid.org/0000-0002-4234-3437","contributorId":1953,"corporation":false,"usgs":true,"family":"Shanley","given":"James","email":"jshanley@usgs.gov","middleInitial":"B.","affiliations":[{"id":405,"text":"NH/VT office of New England Water Science Center","active":true,"usgs":true},{"id":466,"text":"New England Water Science Center","active":true,"usgs":true}],"preferred":true,"id":579261,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sebestyen, Stephen D.","contributorId":107562,"corporation":false,"usgs":true,"family":"Sebestyen","given":"Stephen","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":579262,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McDonnell, Jeffrey J.","contributorId":202934,"corporation":false,"usgs":false,"family":"McDonnell","given":"Jeffrey","email":"","middleInitial":"J.","affiliations":[{"id":36551,"text":"University of Saskatchewan, Canada, and University of Aberdeen, Scotland","active":true,"usgs":false}],"preferred":false,"id":579263,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McGlynn, Brian L.","contributorId":83012,"corporation":false,"usgs":true,"family":"McGlynn","given":"Brian","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":579264,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dunne, Thomas","contributorId":146518,"corporation":false,"usgs":false,"family":"Dunne","given":"Thomas","email":"","affiliations":[{"id":6710,"text":"University of California, Santa Barbara, CA","active":true,"usgs":false}],"preferred":false,"id":579265,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70157452,"text":"70157452 - 2015 - Life history diversity of Snake River finespotted cutthroat trout: managing for persistence in a rapidly changing environment","interactions":[],"lastModifiedDate":"2016-06-01T11:58:54","indexId":"70157452","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Life history diversity of Snake River finespotted cutthroat trout: managing for persistence in a rapidly changing environment","docAbstract":"<p><span>Over the last century, native trout have experienced dramatic population declines, particularly in larger river systems where habitats associated with different spawning life history forms have been lost through habitat degradation and fragmentation. The resulting decrease in life history diversity has affected the capacity of populations to respond to environmental variability and disturbance. Unfortunately, because few large rivers are intact enough to permit full expression of life history diversity, it is unclear what patterns of diversity should be a conservation target. In this study, radiotelemetry was used to identify spawning and migration patterns of Snake River Finespotted Cutthroat Trout&nbsp;</span><i>Oncorhynchus clarkii behnkei</i><span>&nbsp;in the upper Snake River. Individuals were implanted with radio tags in October 2007 and 2008, and monitored through October 2009. Radio-tagged cutthroat trout in the upper Snake River exhibited variation in spawning habitat type and location, migration distance, spawn timing, postspawning behavior, and susceptibility to mortality sources. Between May and July, Cutthroat Trout spawned in runoff-dominated tributaries, groundwater-dominated spring creeks, and side channels of the Snake River. Individuals migrated up to 101&nbsp;km from tagging locations in the upper Snake River to access spawning habitats, indicating that the upper Snake River provided seasonal habitat for spawners originating throughout the watershed. Postspawning behavior also varied; by August each year, 28% of spring-creek spawners remained in their spawning location, compared with 0% of side-channel spawners and 7% of tributary spawners. These spawning and migration patterns reflect the connectivity, habitat diversity, and dynamic template of the Snake River. Ultimately, promoting life history diversity through restoration of complex habitats may provide the most opportunities for cutthroat trout persistence in an environment likely to experience increased variability from climate change and disturbance from invasive species.</span></p>","language":"English","publisher":"American Fisheries Society","doi":"10.1080/02755947.2015.1044625","usgsCitation":"Homel, K.M., Gresswell, R.E., and Kershner, J.L., 2015, Life history diversity of Snake River finespotted cutthroat trout: managing for persistence in a rapidly changing environment: North American Journal of Fisheries Management, v. 35, no. 4, p. 789-801, https://doi.org/10.1080/02755947.2015.1044625.","productDescription":"13 p.","startPage":"789","endPage":"801","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-057796","costCenters":[{"id":481,"text":"Northern Rocky Mountain Science 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Box 173460, Bozeman, MT 59717","active":true,"usgs":false}],"preferred":false,"id":573211,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gresswell, Robert E. 0000-0003-0063-855X bgresswell@usgs.gov","orcid":"https://orcid.org/0000-0003-0063-855X","contributorId":147914,"corporation":false,"usgs":true,"family":"Gresswell","given":"Robert","email":"bgresswell@usgs.gov","middleInitial":"E.","affiliations":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"preferred":false,"id":573209,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kershner, Jeffrey L. 0000-0002-7093-9860 jkershner@usgs.gov","orcid":"https://orcid.org/0000-0002-7093-9860","contributorId":310,"corporation":false,"usgs":true,"family":"Kershner","given":"Jeffrey","email":"jkershner@usgs.gov","middleInitial":"L.","affiliations":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"preferred":true,"id":573210,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70156876,"text":"70156876 - 2015 - Soil surface organic layers in Arctic Alaska: spatial distribution, rates of formation, and microclimatic effects","interactions":[],"lastModifiedDate":"2018-04-04T16:07:37","indexId":"70156876","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2320,"text":"Journal of Geophysical Research: Biogeosciences","active":true,"publicationSubtype":{"id":10}},"title":"Soil surface organic layers in Arctic Alaska: spatial distribution, rates of formation, and microclimatic effects","docAbstract":"<p><span>Organic layers of living and dead vegetation cover the ground surface in many permafrost landscapes and play important roles in ecosystem processes. These soil surface organic layers (SSOLs) store large amounts of carbon and buffer the underlying permafrost and&nbsp;</span><i>its</i><span>&nbsp;contained carbon from changes in aboveground climate. Understanding the dynamics of SSOLs is a prerequisite for predicting how permafrost and carbon stocks will respond to warming climate. Here we ask three questions about SSOLs in a representative area of the Arctic Foothills region of northern Alaska: (1) What environmental factors control the thickness of SSOLs and the carbon they store? (2) How long do SSOLs take to develop on newly stabilized point bars? (3) How do SSOLs affect temperature in the underlying ground? Results show that SSOL thickness and distribution correlate with elevation, drainage area, vegetation productivity, and incoming solar radiation. A multiple regression model based on these correlations can simulate spatial distribution of SSOLs and estimate the organic carbon stored there. SSOLs develop within a few decades after a new, sandy, geomorphic surface stabilizes but require 500&ndash;700&thinsp;years to reach steady state thickness. Mature SSOLs lower the growing season temperature and mean annual temperature of the underlying mineral soil by 8 and 3&deg;C, respectively. We suggest that the proximate effects of warming climate on permafrost landscapes now covered by SSOLs will occur indirectly via climate's effects on the frequency, extent, and severity of disturbances like fires and landslides that disrupt the SSOLs and interfere with their protection of the underlying permafrost.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1002/2015JG002983","usgsCitation":"Baughman, C., Mann, D., Verbyla, D.L., and Kunz, M.L., 2015, Soil surface organic layers in Arctic Alaska: spatial distribution, rates of formation, and microclimatic effects: Journal of Geophysical Research: Biogeosciences, v. 120, no. 6, p. 1150-1164, https://doi.org/10.1002/2015JG002983.","productDescription":"15 p.","startPage":"1150","endPage":"1164","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-064795","costCenters":[{"id":118,"text":"Alaska Science Center Geography","active":true,"usgs":true}],"links":[{"id":471970,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/2015jg002983","text":"Publisher Index Page"},{"id":307786,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -158.466796875,\n              67.19551751715585\n            ],\n            [\n              -158.466796875,\n              69.12344255014861\n            ],\n            [\n              -155.01708984375,\n              69.12344255014861\n            ],\n            [\n              -155.01708984375,\n              67.19551751715585\n            ],\n            [\n              -158.466796875,\n              67.19551751715585\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"120","issue":"6","publishingServiceCenter":{"id":12,"text":"Tacoma PSC"},"noUsgsAuthors":false,"publicationDate":"2015-06-30","publicationStatus":"PW","scienceBaseUri":"55e6cc37e4b05561fa20a02b","contributors":{"authors":[{"text":"Baughman, Carson 0000-0002-9423-9324 cbaughman@usgs.gov","orcid":"https://orcid.org/0000-0002-9423-9324","contributorId":169657,"corporation":false,"usgs":true,"family":"Baughman","given":"Carson","email":"cbaughman@usgs.gov","affiliations":[{"id":118,"text":"Alaska Science Center Geography","active":true,"usgs":true}],"preferred":true,"id":570920,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mann, Daniel H.","contributorId":97441,"corporation":false,"usgs":true,"family":"Mann","given":"Daniel H.","affiliations":[],"preferred":false,"id":570921,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Verbyla, David L.","contributorId":84611,"corporation":false,"usgs":true,"family":"Verbyla","given":"David","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":570922,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kunz, Michael L.","contributorId":50820,"corporation":false,"usgs":true,"family":"Kunz","given":"Michael","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":570923,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70123516,"text":"70123516 - 2015 - Comment on “The role of interbasin groundwater transfers in geologically complex terranes, demonstrated by the Great Basin in the western United States”: report published in Hydrogeology Journal (2014) 22:807–828, by Stephen T. Nelson and Alan L. Mayo","interactions":[],"lastModifiedDate":"2017-04-28T09:34:35","indexId":"70123516","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"Comment on “The role of interbasin groundwater transfers in geologically complex terranes, demonstrated by the Great Basin in the western United States”: report published in Hydrogeology Journal (2014) 22:807–828, by Stephen T. Nelson and Alan L. Mayo","docAbstract":"<p>The subject article (Nelson and Mayo 2014) presents an overview of previous reports of interbasin flow in the Great Basin of the western United States. This Comment is presented by authors of a cited study (comprising chapters in one large report) on the Great Basin carbonate and alluvial aquifer system (GBCAAS; Heilweil and Brooks 2011; Masbruch et al. 2011; Sweetkind et al. 2011a, b), who agree that water budget imbalances alone are not enough to accurately quantify interbasin flow; however, it is proposed that statements made in the subject article about the GBCAAS report are inaccurate. The Comment authors appreciate the opportunity to clarify some statements made about the work.</p>","publisher":"Springer","doi":"10.1007/s10040-014-1208-z","usgsCitation":"Masbruch, M.D., Brooks, L.E., Heilweil, V.M., and Sweetkind, D., 2015, Comment on “The role of interbasin groundwater transfers in geologically complex terranes, demonstrated by the Great Basin in the western United States”: report published in Hydrogeology Journal (2014) 22:807–828, by Stephen T. Nelson and Alan L. Mayo: Hydrogeology Journal, v. 23, no. 1, p. 209-210, https://doi.org/10.1007/s10040-014-1208-z.","productDescription":"2 p.","startPage":"209","endPage":"210","ipdsId":"IP-058108","costCenters":[{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true}],"links":[{"id":339951,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","issue":"1","noUsgsAuthors":false,"publicationDate":"2014-11-15","publicationStatus":"PW","scienceBaseUri":"58f877b9e4b0b7ea54521c22","contributors":{"authors":[{"text":"Masbruch, Melissa D. 0000-0001-6568-160X mmasbruch@usgs.gov","orcid":"https://orcid.org/0000-0001-6568-160X","contributorId":1902,"corporation":false,"usgs":true,"family":"Masbruch","given":"Melissa","email":"mmasbruch@usgs.gov","middleInitial":"D.","affiliations":[{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true}],"preferred":true,"id":519378,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brooks, Lynette E. 0000-0002-9074-0939 lebrooks@usgs.gov","orcid":"https://orcid.org/0000-0002-9074-0939","contributorId":2718,"corporation":false,"usgs":true,"family":"Brooks","given":"Lynette","email":"lebrooks@usgs.gov","middleInitial":"E.","affiliations":[{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true}],"preferred":true,"id":519379,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Heilweil, Victor M. heilweil@usgs.gov","contributorId":837,"corporation":false,"usgs":true,"family":"Heilweil","given":"Victor","email":"heilweil@usgs.gov","middleInitial":"M.","affiliations":[{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true}],"preferred":true,"id":519377,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sweetkind, Donald S. dsweetkind@usgs.gov","contributorId":735,"corporation":false,"usgs":true,"family":"Sweetkind","given":"Donald S.","email":"dsweetkind@usgs.gov","affiliations":[{"id":271,"text":"Federal Center","active":false,"usgs":true}],"preferred":false,"id":519376,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70168390,"text":"70168390 - 2015 - Linking degradation status with ecosystem vulnerability to environmental change","interactions":[],"lastModifiedDate":"2016-02-11T10:09:18","indexId":"70168390","displayToPublicDate":"2015-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2932,"text":"Oecologia","active":true,"publicationSubtype":{"id":10}},"title":"Linking degradation status with ecosystem vulnerability to environmental change","docAbstract":"<p><span>Environmental change can cause regime shifts in ecosystems, potentially threatening ecosystem services. It is unclear if the degradation status of ecosystems correlates with their vulnerability to environmental change, and thus the risk of future regime shifts. We assessed resilience in acidified (degraded) and circumneutral (undegraded) lakes with long-term data (1988&ndash;2012), using time series modeling. We identified temporal frequencies in invertebrate assemblages, which identifies groups of species whose population dynamics vary at particular temporal scales. We also assessed species with stochastic dynamics, those whose population dynamics vary irregularly and unpredictably over time. We determined the distribution of functional feeding groups of invertebrates within and across the temporal scales identified, and in those species with stochastic dynamics, and assessed attributes hypothesized to contribute to resilience. Three patterns of temporal dynamics, consistent across study lakes, were identified in the invertebrates. The first pattern was one of monotonic change associated with changing abiotic lake conditions. The second and third patterns appeared unrelated to the environmental changes we monitored. Acidified and the circumneutral lakes shared similar levels and patterns of functional richness, evenness, diversity, and redundancy for species within and across the observed temporal scales and for stochastic species groups. These similar resilience characteristics suggest that both lake types did not differ in vulnerability to the environmental changes observed here. Although both lake types appeared equally vulnerable in this study, our approach demonstrates how assessing systemic vulnerability by quantifying ecological resilience can help address uncertainty in predicting ecosystem responses to environmental change across ecosystems.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s00442-015-3281-y","usgsCitation":"Angeler, D., Baho, D.L., Allen, C.R., and Johnson, R.K., 2015, Linking degradation status with ecosystem vulnerability to environmental change: Oecologia, v. 178, no. 3, p. 899-913, https://doi.org/10.1007/s00442-015-3281-y.","productDescription":"15 p.","startPage":"899","endPage":"913","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-064260","costCenters":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"links":[{"id":471972,"rank":0,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://pub.epsilon.slu.se/12748/8/angeler_d_et_al_151029.pdf","text":"External Repository"},{"id":317934,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Sweden","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[22.18317,65.72374],[21.21352,65.02601],[21.36963,64.41359],[19.77888,63.60955],[17.84778,62.7494],[17.11955,61.34117],[17.83135,60.63658],[18.78772,60.08191],[17.86922,58.95377],[16.82919,58.71983],[16.44771,57.04112],[15.87979,56.1043],[14.66668,56.20089],[14.10072,55.40778],[12.94291,55.36174],[12.6251,56.30708],[11.78794,57.44182],[11.02737,58.85615],[11.46827,59.43239],[12.30037,60.11793],[12.63115,61.29357],[11.99206,61.80036],[11.93057,63.12832],[12.57994,64.06622],[13.57192,64.04911],[13.91991,64.44542],[13.55569,64.78703],[15.10841,66.19387],[16.10871,67.30246],[16.76888,68.01394],[17.72918,68.01055],[17.99387,68.56739],[19.87856,68.40719],[20.02527,69.06514],[20.64559,69.10625],[21.97853,68.61685],[23.53947,67.93601],[23.56588,66.39605],[23.90338,66.00693],[22.18317,65.72374]]]},\"properties\":{\"name\":\"Sweden\"}}]}","volume":"178","issue":"3","publishingServiceCenter":{"id":12,"text":"Tacoma PSC"},"noUsgsAuthors":false,"publicationDate":"2015-03-10","publicationStatus":"PW","scienceBaseUri":"56bdbec6e4b06458514aeed3","contributors":{"authors":[{"text":"Angeler, David G.","contributorId":25027,"corporation":false,"usgs":true,"family":"Angeler","given":"David G.","affiliations":[],"preferred":false,"id":619884,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Baho, Didier L.","contributorId":166724,"corporation":false,"usgs":false,"family":"Baho","given":"Didier","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":619885,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Allen, Craig R. 0000-0001-8655-8272 allencr@usgs.gov","orcid":"https://orcid.org/0000-0001-8655-8272","contributorId":1979,"corporation":false,"usgs":true,"family":"Allen","given":"Craig","email":"allencr@usgs.gov","middleInitial":"R.","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true},{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"preferred":true,"id":619856,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Johnson, Richard K.","contributorId":21810,"corporation":false,"usgs":true,"family":"Johnson","given":"Richard","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":619886,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
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