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The round goby (Neogobius melanostomus) is a prevalent invasive species throughout Lake Michigan, as well as other Laurentian Great Lakes, yet little information is available on spatial variation in round goby growth within one body of water. Age and growth of round goby at three areas of Lake Michigan were studied by otolith analysis from a sample of 659 specimens collected from 2008 to 2012. Total length (TL) ranged from 48 to 131 mm for Sturgeon Bay, from 50 to 125 mm for Waukegan, and from 54 to 129 mm for Sleeping Bear Dunes. Ages ranged from 2 to 7 years for Sturgeon Bay, from 2 to 5 years for Waukegan, and from 2 to 6 years for Sleeping Bear Dunes. Area-specific and sex-specific body–otolith relationships were used to back-calculate estimates of total length at age, which were fitted to von Bertalanffy models to estimate growth rates. For both sexes, round gobies at Sleeping Bear Dunes and Waukegan grew significantly faster than those at Sturgeon Bay. However, round goby growth did not significantly differ between Sleeping Bear Dunes and Waukegan for either sex. At all three areas of Lake Michigan, males grew significantly faster than females. Based on catch curve analysis, estimates of annual mortality rates ranged from 0.79 to 0.84. These relatively high mortality rates suggested that round gobies may be under predatory control in Lake Michigan.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.jglr.2014.07.003","usgsCitation":"Huo, B., Madenjian, C.P., Xie, C., Zhao, Y., O’Brien, T.P., and Czesny, S.J., 2015, Age and growth of round gobies in Lake Michigan, with preliminary mortality estimation: Journal of Great Lakes Research, v. 40, no. 3, p. 712-720, https://doi.org/10.1016/j.jglr.2014.07.003.","productDescription":"9 p.","startPage":"712","endPage":"720","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-053856","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":297122,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Lake Michigan","volume":"40","issue":"3","publishingServiceCenter":{"id":6,"text":"Columbus PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"54dd2b2be4b08de9379b3284","contributors":{"authors":[{"text":"Huo, Bin","contributorId":127463,"corporation":false,"usgs":false,"family":"Huo","given":"Bin","email":"","affiliations":[{"id":6955,"text":"College of Fisheries, Huazhong Agricultural University","active":true,"usgs":false}],"preferred":false,"id":538000,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Madenjian, Charles P. 0000-0002-0326-164X cmadenjian@usgs.gov","orcid":"https://orcid.org/0000-0002-0326-164X","contributorId":2200,"corporation":false,"usgs":true,"family":"Madenjian","given":"Charles","email":"cmadenjian@usgs.gov","middleInitial":"P.","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":537999,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Xie, Cong X.","contributorId":138597,"corporation":false,"usgs":false,"family":"Xie","given":"Cong X.","affiliations":[{"id":12457,"text":"Huazhong Agricultural University, College of Fisheries","active":true,"usgs":false}],"preferred":false,"id":538001,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Zhao, Yingming","contributorId":49752,"corporation":false,"usgs":true,"family":"Zhao","given":"Yingming","affiliations":[],"preferred":false,"id":538002,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"O’Brien, Timothy P. 0000-0003-4502-5204 tiobrien@usgs.gov","orcid":"https://orcid.org/0000-0003-4502-5204","contributorId":2662,"corporation":false,"usgs":true,"family":"O’Brien","given":"Timothy","email":"tiobrien@usgs.gov","middleInitial":"P.","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":538003,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Czesny, Sergiusz J.","contributorId":138598,"corporation":false,"usgs":false,"family":"Czesny","given":"Sergiusz","email":"","middleInitial":"J.","affiliations":[{"id":12458,"text":"Illinois Natural History Survey, Lake Michigan Biological Station","active":true,"usgs":false}],"preferred":false,"id":538004,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70122717,"text":"70122717 - 2015 - Modeling long-term trends of chlorinated ethene contamination at a public supply well","interactions":[],"lastModifiedDate":"2018-08-10T09:52:49","indexId":"70122717","displayToPublicDate":"2014-08-28T11:13:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Modeling long-term trends of chlorinated ethene contamination at a public supply well","docAbstract":"

A mass-balance solute-transport modeling approach was used to investigate the effects of dense nonaqueous phase liquid (DNAPL) volume, composition, and generation of daughter products on simulated and measured long-term trends of chlorinated ethene (CE) concentrations at a public supply well. The model was built by telescoping a calibrated regional three-dimensional MODFLOW model to the capture zone of a public supply well that has a history of CE contamination. The local model was then used to simulate the interactions between naturally occurring organic carbon that acts as an electron donor, and dissolved oxygen (DO), CEs, ferric iron, and sulfate that act as electron acceptors using the Sequential Electron Acceptor Model in three dimensions (SEAM3D) code. The modeling results indicate that asymmetry between rapidly rising and more gradual falling concentration trends over time suggests a DNAPL rather than a dissolved source of CEs. Peak concentrations of CEs are proportional to the volume and composition of the DNAPL source. The persistence of contamination, which can vary from a few years to centuries, is proportional to DNAPL volume, but is unaffected by DNAPL composition. These results show that monitoring CE concentrations in raw water produced by impacted public supply wells over time can provide useful information concerning the nature of contaminant sources and the likely future persistence of contamination.

","language":"English","publisher":"American Water Resources Association","publisherLocation":"Herndon, VA","doi":"10.1111/jawr.12230","usgsCitation":"Chapelle, F.H., Kauffman, L.J., and Widdowson, M.A., 2015, Modeling long-term trends of chlorinated ethene contamination at a public supply well: Journal of the American Water Resources Association, v. 51, no. 1, p. 1-13, https://doi.org/10.1111/jawr.12230.","productDescription":"13 p.","startPage":"1","endPage":"13","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-052153","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":293152,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":293151,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/jawr.12230"}],"country":"United States","state":"New Jersey","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -75.3813,39.3249 ], [ -75.3813,39.9952 ], [ -74.7182,39.9952 ], [ -74.7182,39.3249 ], [ -75.3813,39.3249 ] ] ] } } ] }","volume":"51","issue":"1","noUsgsAuthors":false,"publicationDate":"2014-08-12","publicationStatus":"PW","scienceBaseUri":"54003434e4b04e908030b547","contributors":{"authors":[{"text":"Chapelle, Francis H. chapelle@usgs.gov","contributorId":1350,"corporation":false,"usgs":true,"family":"Chapelle","given":"Francis","email":"chapelle@usgs.gov","middleInitial":"H.","affiliations":[{"id":559,"text":"South Carolina Water Science Center","active":true,"usgs":true},{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":499661,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kauffman, Leon J. 0000-0003-4564-0362 lkauff@usgs.gov","orcid":"https://orcid.org/0000-0003-4564-0362","contributorId":1094,"corporation":false,"usgs":true,"family":"Kauffman","given":"Leon","email":"lkauff@usgs.gov","middleInitial":"J.","affiliations":[{"id":470,"text":"New Jersey Water Science Center","active":true,"usgs":true}],"preferred":true,"id":499660,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Widdowson, Mark A.","contributorId":90379,"corporation":false,"usgs":true,"family":"Widdowson","given":"Mark","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":499662,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70160540,"text":"70160540 - 2015 - Predicted effects of future climate warming on thermal habitat suitability for Lake Sturgeon (Acipenser fulvescens, Rafinesque, 1817) in rivers in Wisconsin, USA","interactions":[],"lastModifiedDate":"2015-12-23T10:35:36","indexId":"70160540","displayToPublicDate":"2014-08-11T11:15:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2166,"text":"Journal of Applied Ichthyology","active":true,"publicationSubtype":{"id":10}},"title":"Predicted effects of future climate warming on thermal habitat suitability for Lake Sturgeon (Acipenser fulvescens, Rafinesque, 1817) in rivers in Wisconsin, USA","docAbstract":"

The Lake Sturgeon (Acipenser fulvescens, Rafinesque, 1817) may be threatened by future climate warming. The purpose of this study was to identify river reaches in Wisconsin, USA, where they might be vulnerable to warming water temperatures. In Wisconsin, A. fulvescens is known from 2291 km of large-river habitat that has been fragmented into 48 discrete river-lake networks isolated by impassable dams. Although the exact temperature tolerances are uncertain, water temperatures above 28–30°C are potentially less suitable for this coolwater species. Predictions from 13 downscaled global climate models were input to a lotic water temperature model to estimate amounts of potential thermally less-suitable habitat at present and for 2046–2065. Currently, 341 km (14.9%) of the known habitat are estimated to regularly exceed 28°C for an entire day, but only 6 km (0.3%) to exceed 30°C. In 2046–2065, 685–2164 km (29.9–94.5%) are projected to exceed 28°C and 33–1056 km (1.4–46.1%) to exceed 30°C. Most river-lake networks have cooler segments, large tributaries, or lakes that might provide temporary escape from potentially less suitable temperatures, but 12 short networks in the Lower Fox and Middle Wisconsin rivers totaling 93.6 km are projected to have no potential thermal refugia. One possible adaptation to climate change could be to provide fish passage or translocation so that riverine Lake Sturgeon might have access to more thermally suitable habitats.

","language":"English","publisher":"Wiley-Blackwell","publisherLocation":"Berlin","doi":"10.1111/jai.12543","collaboration":"John Lyons, WI Department of Natural Resources","usgsCitation":"Lyons, J., and Stewart, J.S., 2015, Predicted effects of future climate warming on thermal habitat suitability for Lake Sturgeon (Acipenser fulvescens, Rafinesque, 1817) in rivers in Wisconsin, USA: Journal of Applied Ichthyology, v. 30, no. 6, p. 1508-1513, https://doi.org/10.1111/jai.12543.","productDescription":"6 p.","startPage":"1508","endPage":"1513","numberOfPages":"6","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-055775","costCenters":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"links":[{"id":472478,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/jai.12543","text":"Publisher Index 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\"}}]}","volume":"30","issue":"6","publishingServiceCenter":{"id":6,"text":"Columbus PSC"},"noUsgsAuthors":false,"publicationDate":"2014-08-11","publicationStatus":"PW","scienceBaseUri":"567bd3bfe4b0a04ef491a212","contributors":{"authors":[{"text":"Lyons, John D.","contributorId":150808,"corporation":false,"usgs":false,"family":"Lyons","given":"John D.","affiliations":[{"id":6913,"text":"Wisconsin Department of Natural Resources","active":true,"usgs":false}],"preferred":false,"id":583086,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stewart, Jana S. 0000-0002-8121-1373 jsstewar@usgs.gov","orcid":"https://orcid.org/0000-0002-8121-1373","contributorId":539,"corporation":false,"usgs":true,"family":"Stewart","given":"Jana","email":"jsstewar@usgs.gov","middleInitial":"S.","affiliations":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":true,"id":583085,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70119413,"text":"70119413 - 2015 - Spatial complexity reduces interaction strengths in the meta-food web of a river floodplain mosaic","interactions":[],"lastModifiedDate":"2015-02-09T15:25:15","indexId":"70119413","displayToPublicDate":"2014-08-07T09:42:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Spatial complexity reduces interaction strengths in the meta-food web of a river floodplain mosaic","docAbstract":"

Theory states that both the spatial complexity of landscapes and the strength of interactions between consumers and their resources are important for maintaining biodiversity and the 'balance of nature.' Spatial complexity is hypothesized to promote biodiversity by reducing potential for competitive exclusion; whereas, models show weak trophic interactions can enhance stability and maintain biodiversity by dampening destabilizing oscillations associated with strong interactions. Here we show that spatial complexity can reduce the strength of consumer-resource interactions in natural food webs. By sequentially aggregating food webs of individual aquatic habitat patches across a floodplain mosaic, we found that increasing spatial complexity resulted in decreases in the strength of interactions between predators and prey, owing to a greater proportion of weak interactions and a reduced proportion of strong interactions in the meta-food web. The main mechanism behind this pattern was that some patches provided predation refugia for species which were often strongly preyed upon in other patches. If weak trophic interactions do indeed promote stability, then our findings may signal an additional mechanism by which complexity and stability are linked in nature. In turn, this may have implications for how the values of landscape complexity, and the costs of biophysical homogenization, are assessed.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Ecological Society of America","doi":"10.1890/14-0733.1","usgsCitation":"Bellmore, J.R., Baxter, C.V., and Connolly, P., 2015, Spatial complexity reduces interaction strengths in the meta-food web of a river floodplain mosaic: Ecology, v. 96, no. 1, p. 274-283, https://doi.org/10.1890/14-0733.1.","startPage":"274","endPage":"283","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-045124","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":291816,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":291800,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/14-0733.1"}],"volume":"96","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53e484b7e4b0fff4042801cf","contributors":{"authors":[{"text":"Bellmore, James Ryan","contributorId":81812,"corporation":false,"usgs":true,"family":"Bellmore","given":"James","email":"","middleInitial":"Ryan","affiliations":[],"preferred":false,"id":497676,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Baxter, Colden Vance","contributorId":43682,"corporation":false,"usgs":true,"family":"Baxter","given":"Colden","email":"","middleInitial":"Vance","affiliations":[],"preferred":false,"id":497675,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Connolly, Patrick J. 0000-0001-7365-7618 pconnolly@usgs.gov","orcid":"https://orcid.org/0000-0001-7365-7618","contributorId":2920,"corporation":false,"usgs":true,"family":"Connolly","given":"Patrick J.","email":"pconnolly@usgs.gov","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":true,"id":497674,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70129652,"text":"70129652 - 2015 - Evaluating the predictive performance of empirical estimators of natural mortality rate using information on over 200 fish species","interactions":[],"lastModifiedDate":"2018-03-26T11:37:30","indexId":"70129652","displayToPublicDate":"2014-08-01T14:28:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1936,"text":"ICES Journal of Marine Science","active":true,"publicationSubtype":{"id":10}},"title":"Evaluating the predictive performance of empirical estimators of natural mortality rate using information on over 200 fish species","docAbstract":"

Many methods have been developed in the last 70 years to predict the natural mortality rate, M, of a stock based on empirical evidence from comparative life history studies. These indirect or empirical methods are used in most stock assessments to (i) obtain estimates of M in the absence of direct information, (ii) check on the reasonableness of a direct estimate of M, (iii) examine the range of plausible M estimates for the stock under consideration, and (iv) define prior distributions for Bayesian analyses. The two most cited empirical methods have appeared in the literature over 2500 times to date. Despite the importance of these methods, there is no consensus in the literature on how well these methods work in terms of prediction error or how their performance may be ranked. We evaluate estimators based on various combinations of maximum age (tmax), growth parameters, and water temperature by seeing how well they reproduce >200 independent, direct estimates of M. We use tenfold cross-validation to estimate the prediction error of the estimators and to rank their performance. With updated and carefully reviewed data, we conclude that a tmax-based estimator performs the best among all estimators evaluated. The tmax-based estimators in turn perform better than the Alverson–Carney method based on tmax and the von Bertalanffy K coefficient, Pauly’s method based on growth parameters and water temperature and methods based just on K. It is possible to combine two independent methods by computing a weighted mean but the improvement over the tmax-based methods is slight. Based on cross-validation prediction error, model residual patterns, model parsimony, and biological considerations, we recommend the use of a tmax-based estimator (M=4.899tmax−0.916\">M=4.899t−0.916maxM=4.899tmax−0.916, prediction error = 0.32) when possible and a growth-based method (M=4.118K0.73L∞−0.33\">M=4.118K0.73L−0.33∞M=4.118K0.73L∞−0.33 , prediction error = 0.6, length in cm) otherwise.

","language":"English","publisher":"International Council for the Exploration of the Sea","doi":"10.1093/icesjms/fsu136","usgsCitation":"Then, A., Hoenig, J., Hall, N.G., and Hewitt, D.A., 2015, Evaluating the predictive performance of empirical estimators of natural mortality rate using information on over 200 fish species: ICES Journal of Marine Science, v. 72, no. 1, p. 82-92, https://doi.org/10.1093/icesjms/fsu136.","productDescription":"11 p.","startPage":"82","endPage":"92","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-053553","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":472479,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1093/icesjms/fsu136","text":"Publisher Index Page"},{"id":295737,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"72","issue":"1","noUsgsAuthors":false,"publicationDate":"2014-08-20","publicationStatus":"PW","scienceBaseUri":"544b6a1fe4b03653c63fb1cc","contributors":{"authors":[{"text":"Then, Amy Y.","contributorId":81038,"corporation":false,"usgs":true,"family":"Then","given":"Amy Y.","affiliations":[],"preferred":false,"id":503942,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hoenig, John M","contributorId":58211,"corporation":false,"usgs":true,"family":"Hoenig","given":"John M","affiliations":[],"preferred":false,"id":503940,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hall, Norman G.","contributorId":76245,"corporation":false,"usgs":true,"family":"Hall","given":"Norman","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":503941,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hewitt, David A. 0000-0002-5387-0275 dhewitt@usgs.gov","orcid":"https://orcid.org/0000-0002-5387-0275","contributorId":3767,"corporation":false,"usgs":false,"family":"Hewitt","given":"David","email":"dhewitt@usgs.gov","middleInitial":"A.","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":true,"id":503939,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70159977,"text":"70159977 - 2015 - The economic viability of smallholder timber production under expanding açaí palm production in the Amazon Estuary","interactions":[],"lastModifiedDate":"2018-01-04T12:57:01","indexId":"70159977","displayToPublicDate":"2014-08-01T03:45:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2295,"text":"Journal of Forest Economics","active":true,"publicationSubtype":{"id":10}},"title":"The economic viability of smallholder timber production under expanding açaí palm production in the Amazon Estuary","docAbstract":"

Relatively little attention has been paid to the economic potentials and limitations of tropical timber production and management at smallholder scales, with the most relevant research focusing on community forestry efforts. As a rare tropical example of long-lasting small-scale timber production, in this study we explore the economics of smallholder vertically integrated timber use to better understand the activity in the context of its primary land use alternative in the Amazon Estuary, açaí palm fruit production. We use data from landowner and firm surveys, participatory monitoring of firms, and detailed forest and sawmill operation monitoring to devise financial returns models of smallholder timber micro firms and açaí palm fruit production. We then compare the economics of the two activities to better understand how differences may shape decisions at the small holder scale that impact current land use shifts in the region.

","language":"English","publisher":"Umeå Forest University Press","publisherLocation":"Umeå, Sweden","doi":"10.1016/j.jfe.2014.06.001","usgsCitation":"Fortini, L.B., and Carter, D.R., 2015, The economic viability of smallholder timber production under expanding açaí palm production in the Amazon Estuary: Journal of Forest Economics, v. 20, no. 3, p. 223-235, https://doi.org/10.1016/j.jfe.2014.06.001.","productDescription":"13 p.","startPage":"223","endPage":"235","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-052234","costCenters":[{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true}],"links":[{"id":488396,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.jfe.2014.06.001","text":"Publisher Index Page"},{"id":312006,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Brazil","otherGeospatial":"Amazon River, Mazagão watershed","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -51.6,\n -0.5\n ],\n [\n -51.6,\n -0.4 \n ],\n [\n -51.5,\n -0.4 \n ],\n [\n -51.5,\n -0.5\n ],\n [\n -51.6,\n -0.5\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"20","issue":"3","publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5666bbf6e4b06a3ea36c8b54","contributors":{"authors":[{"text":"Fortini, Lucas B. 0000-0002-5781-7295 lfortini@usgs.gov","orcid":"https://orcid.org/0000-0002-5781-7295","contributorId":4645,"corporation":false,"usgs":true,"family":"Fortini","given":"Lucas","email":"lfortini@usgs.gov","middleInitial":"B.","affiliations":[{"id":5049,"text":"Pacific Islands Ecosys Research Center","active":true,"usgs":true},{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true}],"preferred":false,"id":581406,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Carter, Douglas R.","contributorId":150364,"corporation":false,"usgs":false,"family":"Carter","given":"Douglas","email":"","middleInitial":"R.","affiliations":[{"id":13197,"text":"School of Forest Resources and Conservation, University of Florida","active":true,"usgs":false}],"preferred":false,"id":581407,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70132447,"text":"70132447 - 2015 - Introduced northern pike consumption of salmonids in Southcentral Alaska","interactions":[],"lastModifiedDate":"2015-09-10T14:49:05","indexId":"70132447","displayToPublicDate":"2014-07-17T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1471,"text":"Ecology of Freshwater Fish","active":true,"publicationSubtype":{"id":10}},"title":"Introduced northern pike consumption of salmonids in Southcentral Alaska","docAbstract":"

The impacts of introduced northern pike (Esox lucius) on salmonid populations have attracted much attention because salmonids are popular subsistence, sport and commercial fish. Concern over the predatory effects of introduced pike on salmonids is especially high in Southcentral Alaska, where pike were illegally introduced to the Susitna River basin in the 1950s. We used pike abundance, growth, and diet estimates and bioenergetics models to characterise the realised and potential consumptive impacts that introduced pike (age 2 and older) have on salmonids in Alexander Creek, a tributary to the Susitna River. We found that juvenile salmonids were the dominant prey item in pike diets and that pike could consume up to 1.10 metric tons (realised consumption) and 1.66 metric tons (potential consumption) of juvenile salmonids in a summer. Age 3–4 pike had the highest per capita consumption of juvenile salmonids, and age 2 and age 3–4 pike had the highest overall consumption of juvenile salmonid biomass. Using historical data on Chinook salmon and pike potential consumption of juvenile salmonids, we found that pike consumption of juvenile salmonids may lead to collapsed salmon stocks in Alexander Creek. Taken together, our results indicate that pike consume a substantial biomass of juvenile salmonids in Alexander Creek and that coexistence of pike and salmon is unlikely without management actions to reduce or eliminate introduced pike.

","language":"English","publisher":"Wiley","doi":"10.1111/eff.12164","usgsCitation":"Sepulveda, A., Rutz, D.S., Dupuis, A.W., Shields, P.A., and Dunker, K.J., 2015, Introduced northern pike consumption of salmonids in Southcentral Alaska: Ecology of Freshwater Fish, v. 24, no. 4, p. 519-531, https://doi.org/10.1111/eff.12164.","productDescription":"13 p.","startPage":"519","endPage":"531","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-056140","costCenters":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"links":[{"id":296111,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Alexander Creek, Deshka River, Sustina River Basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -152.698974609375,\n 60.392147922518845\n ],\n [\n -152.698974609375,\n 63.52897054110277\n ],\n [\n -147.930908203125,\n 63.52897054110277\n ],\n [\n -147.930908203125,\n 60.392147922518845\n ],\n [\n -152.698974609375,\n 60.392147922518845\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"24","issue":"4","noUsgsAuthors":false,"publicationDate":"2014-07-17","publicationStatus":"PW","scienceBaseUri":"546727bce4b04d4b7dbde86f","contributors":{"authors":[{"text":"Sepulveda, Adam 0000-0001-7621-7028 asepulveda@usgs.gov","orcid":"https://orcid.org/0000-0001-7621-7028","contributorId":4187,"corporation":false,"usgs":true,"family":"Sepulveda","given":"Adam","email":"asepulveda@usgs.gov","affiliations":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"preferred":true,"id":522899,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rutz, David S.","contributorId":38033,"corporation":false,"usgs":false,"family":"Rutz","given":"David","email":"","middleInitial":"S.","affiliations":[{"id":6770,"text":"Alaska Department of Fish & Game, Division of Commercial Fish, Soldotna, AK 99669","active":true,"usgs":false}],"preferred":false,"id":522900,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dupuis, Aaron W","contributorId":127025,"corporation":false,"usgs":false,"family":"Dupuis","given":"Aaron","email":"","middleInitial":"W","affiliations":[{"id":6770,"text":"Alaska Department of Fish & Game, Division of Commercial Fish, Soldotna, AK 99669","active":true,"usgs":false}],"preferred":false,"id":522901,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shields, Patrick A","contributorId":127026,"corporation":false,"usgs":false,"family":"Shields","given":"Patrick","email":"","middleInitial":"A","affiliations":[{"id":6770,"text":"Alaska Department of Fish & Game, Division of Commercial Fish, Soldotna, AK 99669","active":true,"usgs":false}],"preferred":false,"id":522902,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dunker, Kristine J.","contributorId":38864,"corporation":false,"usgs":false,"family":"Dunker","given":"Kristine","email":"","middleInitial":"J.","affiliations":[{"id":6770,"text":"Alaska Department of Fish & Game, Division of Commercial Fish, Soldotna, AK 99669","active":true,"usgs":false}],"preferred":false,"id":522903,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70188875,"text":"70188875 - 2015 - Mantle peridotite in newly discovered far-inland subduction complex, southwest Arizona: Initial report","interactions":[],"lastModifiedDate":"2017-06-26T14:54:30","indexId":"70188875","displayToPublicDate":"2014-07-16T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2020,"text":"International Geology Review","active":true,"publicationSubtype":{"id":10}},"title":"Mantle peridotite in newly discovered far-inland subduction complex, southwest Arizona: Initial report","docAbstract":"

The latest Cretaceous to early Palaeogene Orocopia Schist and related units are generally considered a low-angle subduction complex that underlies much of southern California and Arizona. A recently discovered exposure of Orocopia Schist at Cemetery Ridge west of Phoenix, Arizona, lies exceptionally far inland from the continental margin. Unexpectedly, this body of Orocopia Schist contains numerous blocks, as large as ~300 m, of variably serpentinized mantle peridotite. These are unique; elsewhere in the Orocopia and related schists, peridotite is rare and completely serpentinized. Peridotite and metaperidotite at Cemetery Ridge are of three principal types: (1) serpentinite and tremolite serpentinite, derived from dunite; (2) partially serpentinized harzburgite and olivine orthopyroxenite (collectively, harzburgite); and (3) granoblastic or schistose metasomatic rocks, derived from serpentinite, made largely of actinolite, calcic plagioclase, hercynite, and chlorite. In the serpentinite, paucity of relict olivine, relatively abundant magnetite (5%), and elevated Fe3+/Fe indicate advanced serpentinization. Harzburgite contains abundant orthopyroxene, only slightly serpentinized, and minor to moderate (1–15%) relict olivine. Mantle tectonite fabric is locally preserved. Several petrographic and geochemical characteristics of the peridotite at Cemetery Ridge are ambiguously similar to either abyssal or mantle-wedge (suprasubduction) peridotites and serpentinites. Least ambiguous are orthopyroxene compositions. Orthopyroxene is distinctively depleted in Al2O3, Cr2O3, and CaO, indicating mantle-wedge affinities. Initial interpretation of field and petrologic data suggests that the peridotite blocks in the Orocopia Schist subduction complex at Cemetery Ridge may be derived from the leading corner or edge of a mantle wedge, presumably in (pre-San Andreas fault) southwest California. However, derivation from a subducting plate is not precluded.

","language":"English","publisher":"Taylor & Francis","doi":"10.1080/00206814.2014.928916","usgsCitation":"Haxel, G.B., Jacobson, C.E., and Wittke, J.H., 2015, Mantle peridotite in newly discovered far-inland subduction complex, southwest Arizona: Initial report: International Geology Review, v. 57, no. 5-8, p. 871-892, https://doi.org/10.1080/00206814.2014.928916.","productDescription":"22 p.","startPage":"871","endPage":"892","ipdsId":"IP-057531","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":342912,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -119.5,\n 32.7\n ],\n [\n -112,\n 32.7\n ],\n [\n -112,\n 35.7\n ],\n [\n -119.5,\n 35.7\n ],\n [\n -119.5,\n 32.7\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"57","issue":"5-8","publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"noUsgsAuthors":false,"publicationDate":"2014-06-24","publicationStatus":"PW","scienceBaseUri":"59521d23e4b062508e3c36a2","contributors":{"authors":[{"text":"Haxel, Gordon B. gbhaxel@usgs.gov","contributorId":5666,"corporation":false,"usgs":true,"family":"Haxel","given":"Gordon","email":"gbhaxel@usgs.gov","middleInitial":"B.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":700775,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jacobson, Carl E.","contributorId":193546,"corporation":false,"usgs":false,"family":"Jacobson","given":"Carl","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":700776,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wittke, James H.","contributorId":193547,"corporation":false,"usgs":false,"family":"Wittke","given":"James","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":700777,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70116459,"text":"70116459 - 2015 - Event sedimentation in low-latitude deep-water carbonate basins, Anegada passage, northeast Caribbean","interactions":[],"lastModifiedDate":"2017-11-20T09:53:13","indexId":"70116459","displayToPublicDate":"2014-07-11T15:56:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":972,"text":"Basin Research","active":true,"publicationSubtype":{"id":10}},"title":"Event sedimentation in low-latitude deep-water carbonate basins, Anegada passage, northeast Caribbean","docAbstract":"

The Virgin Islands and Whiting basins in the Northeast Caribbean are deep, structurally controlled depocentres partially bound by shallow-water carbonate platforms. Closed basins such as these are thought to document earthquake and hurricane events through the accumulation of event layers such as debris flow and turbidity current deposits and the internal deformation of deposited material. Event layers in the Virgin Islands and Whiting basins are predominantly thin and discontinuous, containing varying amounts of reef- and slope-derived material. Three turbidites/sandy intervals in the upper 2 m of sediment in the eastern Virgin Islands Basin were deposited between ca. 2000 and 13 600 years ago, but do not extend across the basin. In the central and western Virgin Islands Basin, a structureless clay-rich interval is interpreted to be a unifite. Within the Whiting Basin, several discontinuous turbidites and other sand-rich intervals are primarily deposited in base of slope fans. The youngest of these turbidites is ca. 2600 years old. Sediment accumulation in these basins is low (−1) for basin adjacent to carbonate platform, possibly due to limited sediment input during highstand sea-level conditions, sediment trapping and/or cohesive basin walls. We find no evidence of recent sediment transport (turbidites or debris flows) or sediment deformation that can be attributed to the ca. M7.2 1867 Virgin Islands earthquake whose epicentre was located on the north wall of the Virgin Islands Basin or to recent hurricanes that have impacted the region. The lack of significant appreciable pebble or greater size carbonate material in any of the available cores suggests that submarine landslide and basin-wide blocky debris flows have not been a significant mechanism of basin margin modification in the last several thousand years. Thus, basins such as those described here may be poor recorders of past natural hazards, but may provide a long-term record of past oceanographic conditions in ocean passages.

","language":"English","publisher":"Wiley","doi":"10.1111/bre.12076","usgsCitation":"Chaytor, J., and ten Brink, U., 2015, Event sedimentation in low-latitude deep-water carbonate basins, Anegada passage, northeast Caribbean: Basin Research, v. 27, no. 3, p. 310-335, https://doi.org/10.1111/bre.12076.","productDescription":"26 p.","startPage":"310","endPage":"335","numberOfPages":"26","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-056213","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":289821,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":289785,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/bre.12076"}],"otherGeospatial":"Anegada Passage, Caribbean","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -66.0,17.0 ], [ -66.0,19.0 ], [ -64.0,19.0 ], [ -64.0,17.0 ], [ -66.0,17.0 ] ] ] } } ] }","volume":"27","issue":"3","noUsgsAuthors":false,"publicationDate":"2014-07-10","publicationStatus":"PW","scienceBaseUri":"53c0ebaae4b065ccca5fe327","chorus":{"doi":"10.1111/bre.12076","url":"http://dx.doi.org/10.1111/bre.12076","publisher":"Wiley-Blackwell","authors":"Chaytor Jason D., ten Brink Uri S.","journalName":"Basin Research","publicationDate":"7/10/2014","auditedOn":"11/1/2014"},"contributors":{"authors":[{"text":"Chaytor, Jason D.","contributorId":88637,"corporation":false,"usgs":true,"family":"Chaytor","given":"Jason D.","affiliations":[],"preferred":false,"id":495803,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"ten Brink, Uri S. 0000-0001-6858-3001 utenbrink@usgs.gov","orcid":"https://orcid.org/0000-0001-6858-3001","contributorId":127560,"corporation":false,"usgs":true,"family":"ten Brink","given":"Uri S.","email":"utenbrink@usgs.gov","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true},{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":false,"id":495802,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70115941,"text":"70115941 - 2015 - Indirect effects of biocontrol of an invasive riparian plant (Tamarix) alters habitat and reduces herpetofauna abundance","interactions":[],"lastModifiedDate":"2025-12-11T21:48:43.874353","indexId":"70115941","displayToPublicDate":"2014-07-08T15:25:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1018,"text":"Biological Invasions","active":true,"publicationSubtype":{"id":10}},"title":"Indirect effects of biocontrol of an invasive riparian plant (Tamarix) alters habitat and reduces herpetofauna abundance","docAbstract":"

The biological control agent (tamarisk leaf beetle, Diorhabda spp.) is actively being used to defoliate exotic saltcedar or tamarisk (Tamarix spp.) in riparian ecosystems in western USA. The Virgin River in Arizona and Nevada is a system where tamarisk leaf beetle populations are spreading. Saltcedar biocontrol, like other control methods, has the potential to affect non-target species. Because amphibians and reptiles respond to vegetation changes in habitat and forage in areas where beetles are active, herpetofauna are model taxa to investigate potential impacts of biocontrol defoliation. Our objectives related herpetofauna abundance to vegetation cover and indices (normalized difference vegetation index, NDVI; enhanced vegetation index, EVI) and timing of biocontrol defoliation. We captured herpetofauna and ground-dwelling arthropods in trap arrays and measured vegetation using remotely sensed images and on-the-ground measurements at 16–21 sites 2 years before (2009–2010) and 2 years following (2011–2012) biocontrol defoliation. Following defoliation, riparian stands (including stands mixed with native and exotic trees and stands of monotypic exotic saltcedar) had significantly lower NDVI and EVI values and fewer captures of marked lizards. Total captures of herpetofauna (toads, lizards, and snakes) were related to higher vegetation cover and sites with a lower proportion of saltcedar. Our results suggest that effects of biocontrol defoliation are likely to be site-specific and depend upon the proportion of native riparian trees established prior to biocontrol introduction and defoliation. The mechanisms by which habitat structure, microclimate, and ultimately vertebrate species are affected by exotic plant biocontrol riparian areas should be a focus of natural-resource managers.

","language":"English","publisher":"Springer","doi":"10.1007/s10530-014-0707-0","usgsCitation":"Bateman, H., Merritt, D., Glenn, E.P., and Nagler, P., 2015, Indirect effects of biocontrol of an invasive riparian plant (Tamarix) alters habitat and reduces herpetofauna abundance: Biological Invasions, v. 17, no. 1, p. 87-97, https://doi.org/10.1007/s10530-014-0707-0.","productDescription":"11 p.","startPage":"87","endPage":"97","numberOfPages":"11","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-044864","costCenters":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"links":[{"id":289564,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Mojave Desert","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -115.2328,35.998 ], [ -115.2328,37.2019 ], [ -113.4915,37.2019 ], [ -113.4915,35.998 ], [ -115.2328,35.998 ] ] ] } } ] }","volume":"17","issue":"1","noUsgsAuthors":false,"publicationDate":"2014-05-04","publicationStatus":"PW","scienceBaseUri":"53bd04dae4b00cbf31f7232f","contributors":{"authors":[{"text":"Bateman, H.L.","contributorId":36036,"corporation":false,"usgs":true,"family":"Bateman","given":"H.L.","email":"","affiliations":[],"preferred":false,"id":495713,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Merritt, D.M.","contributorId":11025,"corporation":false,"usgs":true,"family":"Merritt","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":495710,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Glenn, E. P.","contributorId":24463,"corporation":false,"usgs":false,"family":"Glenn","given":"E.","middleInitial":"P.","affiliations":[],"preferred":false,"id":495711,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nagler, P.L. 0000-0003-0674-103X","orcid":"https://orcid.org/0000-0003-0674-103X","contributorId":29937,"corporation":false,"usgs":true,"family":"Nagler","given":"P.L.","affiliations":[],"preferred":false,"id":495712,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70137638,"text":"70137638 - 2015 - Models of invasion and establishment of African Mustard (Brassica tournefortii)","interactions":[],"lastModifiedDate":"2015-01-12T10:24:18","indexId":"70137638","displayToPublicDate":"2014-07-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2100,"text":"Invasive Plant Science and Management","active":true,"publicationSubtype":{"id":10}},"title":"Models of invasion and establishment of African Mustard (Brassica tournefortii)","docAbstract":"

Introduced exotic plants can drive ecosystem change. We studied invasion and establishment ofBrassica tournefortii (African mustard), a noxious weed, in the Chemehuevi Valley, western Sonoran Desert, California. We used long-term data sets of photographs, transects for biomass of annual plants, and densities of African mustard collected at irregular intervals between 1979 and 2009. We suggest that African mustard may have been present in low numbers along the main route of travel, a highway, in the late 1970s; invaded the valley along a major axial valley ephemeral stream channel and the highway; and by 2009, colonized 22 km into the eastern part of the valley. We developed predictive models for invasibility and establishment of African mustard. Both during the initial invasion and after establishment, significant predictor variables of African mustard densities were surficial geology, proximity to the highway and axial valley ephemeral stream channel, and number of small ephemeral stream channels. The axial valley ephemeral stream channel was the most vulnerable of the variables to invasions. Overall, African mustard rapidly colonized and quickly became established in naturally disturbed areas, such as stream channels, where geological surfaces were young and soils were weakly developed. Older geological surfaces (e.g., desert pavements with soils 140,000 to 300,000 years old) were less vulnerable. Microhabitats also influenced densities of African mustard, with densities higher under shrubs than in the interspaces. As African mustard became established, the proportional biomass of native winter annual plants declined. Early control is important because African mustard can colonize and become well established across a valley in 20 yr.

","language":"English","publisher":"BioOne","doi":"10.1614/IPSM-D-14-00023.1","usgsCitation":"Berry, K.H., Gowan, T.A., Miller, D., and Brooks, M.L., 2015, Models of invasion and establishment of African Mustard (Brassica tournefortii): Invasive Plant Science and Management, v. 7, no. 4, p. 599-616, https://doi.org/10.1614/IPSM-D-14-00023.1.","productDescription":"18 p.","startPage":"599","endPage":"616","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-017107","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":297124,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Chemehuevi Valley","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -124.49707031249999,\n 42.032974332441405\n ],\n [\n -120.0146484375,\n 42.00032514831621\n ],\n [\n -119.7509765625,\n 39.095962936305504\n ],\n [\n -113.5546875,\n 34.52466147177172\n ],\n [\n -114.78515624999999,\n 32.62087018318113\n ],\n [\n -118.6083984375,\n 32.47269502206151\n ],\n [\n -124.8486328125,\n 40.07807142745009\n ],\n [\n -124.49707031249999,\n 42.032974332441405\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"7","issue":"4","publishingServiceCenter":{"id":1,"text":"Sacramento PSC"},"noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"54dd2c02e4b08de9379b35dd","contributors":{"authors":[{"text":"Berry, Kristin H. 0000-0003-1591-8394 kristin_berry@usgs.gov","orcid":"https://orcid.org/0000-0003-1591-8394","contributorId":437,"corporation":false,"usgs":true,"family":"Berry","given":"Kristin","email":"kristin_berry@usgs.gov","middleInitial":"H.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":537986,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gowan, Timothy A.","contributorId":138595,"corporation":false,"usgs":false,"family":"Gowan","given":"Timothy","email":"","middleInitial":"A.","affiliations":[{"id":12456,"text":"former USGS scientist","active":true,"usgs":false}],"preferred":false,"id":537987,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Miller, David M. 0000-0003-3711-0441 dmiller@usgs.gov","orcid":"https://orcid.org/0000-0003-3711-0441","contributorId":1707,"corporation":false,"usgs":true,"family":"Miller","given":"David M.","email":"dmiller@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":false,"id":537988,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brooks, Matthew L. 0000-0002-3518-6787 mlbrooks@usgs.gov","orcid":"https://orcid.org/0000-0002-3518-6787","contributorId":393,"corporation":false,"usgs":true,"family":"Brooks","given":"Matthew","email":"mlbrooks@usgs.gov","middleInitial":"L.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":537989,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70104727,"text":"70104727 - 2015 - Hydrologic response to valley-scale structure in alpine headwaters","interactions":[],"lastModifiedDate":"2017-11-24T18:04:36","indexId":"70104727","displayToPublicDate":"2014-05-19T09:54:00","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":"Hydrologic response to valley-scale structure in alpine headwaters","docAbstract":"

Few systematic studies of valley-scale geomorphic drivers of streamflow regimes in complex alpine headwaters have compared response between catchments. As a result, little guidance is available for regional-scale hydrological research and monitoring efforts that include assessments of ecosystem function. Physical parameters such as slope, elevation range, drainage area and bedrock geology are often used to stratify differences in streamflow response between sampling sites within an ecoregion. However, these metrics do not take into account geomorphic controls on streamflow specific to glaciated mountain headwaters. The coarse-grained nature of depositional features in alpine catchments suggests that these landforms have little water storage capacity because hillslope runoff moves rapidly just beneath the rock mantle before emerging in fluvial networks. However, recent studies show that a range of depositional features, including talus slopes, protalus ramparts and 'rock-ice' features may have more storage capacity than previously thought.

\n

To better evaluate potential differences in streamflow response among basins with extensive coarse depositional features and those without, we examined the relationships between streamflow discharge, stable isotopes, water temperature and the amplitude of the diurnal signal at five basin outlets. We also quantified the percentages of colluvial channel length measured along the stepped longitudinal profile. Colluvial channels, characterized by the presence of surficial, coarse-grained depositional features, presented sediment-rich, transport-limited morphologies that appeared to have a cumulative effect on the timing and volume of flow downstream. Measurements taken from colluvial channels flowing through depositional landforms showed median recession constants (Kr) of 0.9-0.95, δ18O values of ≥−14.5 and summer diurnal amplitudes ≤0.8 as compared with more typical surface water recession constant values of 0.7, δ18O ≤ −13.5 and diurnal amplitudes >2.0. Our results demonstrated strong associations between the percentage of colluvial channel length within a catchment and moderated streamflow regimes, water temperatures, diurnal signals and depleted δ18O related to groundwater influx.

","language":"English","publisher":"Wiley","doi":"10.1002/hyp.10141","usgsCitation":"Weekes, A.A., Torgersen, C., Montgomery, D.R., Woodward, A., and Bolton, S.M., 2015, Hydrologic response to valley-scale structure in alpine headwaters: Hydrological Processes, v. 29, no. 3, p. 356-372, https://doi.org/10.1002/hyp.10141.","productDescription":"17 p.","startPage":"356","endPage":"372","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-052531","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":287280,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -121.853059,46.707817 ], [ -121.853059,47.026358 ], [ -121.442875,47.026358 ], [ -121.442875,46.707817 ], [ -121.853059,46.707817 ] ] ] } } ] }","volume":"29","issue":"3","noUsgsAuthors":false,"publicationDate":"2014-02-17","publicationStatus":"PW","scienceBaseUri":"537b19d2e4b0929ba496ab35","contributors":{"authors":[{"text":"Weekes, Anne A.","contributorId":11870,"corporation":false,"usgs":true,"family":"Weekes","given":"Anne","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":493789,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Torgersen, Christian E. 0000-0001-8325-2737","orcid":"https://orcid.org/0000-0001-8325-2737","contributorId":48143,"corporation":false,"usgs":true,"family":"Torgersen","given":"Christian E.","affiliations":[],"preferred":false,"id":493790,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Montgomery, David R.","contributorId":67389,"corporation":false,"usgs":true,"family":"Montgomery","given":"David","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":493791,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Woodward, Andrea 0000-0003-0604-9115 awoodward@usgs.gov","orcid":"https://orcid.org/0000-0003-0604-9115","contributorId":3028,"corporation":false,"usgs":true,"family":"Woodward","given":"Andrea","email":"awoodward@usgs.gov","affiliations":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true},{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true}],"preferred":true,"id":493788,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bolton, Susan M.","contributorId":76987,"corporation":false,"usgs":true,"family":"Bolton","given":"Susan","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":493792,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70093685,"text":"70093685 - 2015 - New insight into the spawning behavior of lake trout, Salvelinus namaycush, from a recovering population in the Laurentian Great Lakes","interactions":[],"lastModifiedDate":"2016-12-14T11:42:51","indexId":"70093685","displayToPublicDate":"2014-05-06T08:36:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1528,"text":"Environmental Biology of Fishes","active":true,"publicationSubtype":{"id":10}},"title":"New insight into the spawning behavior of lake trout, Salvelinus namaycush, from a recovering population in the Laurentian Great Lakes","docAbstract":"

Spawning behavior of lake trout, Salvelinus namaycush, is poorly understood, relative to stream-dwelling salmonines. Underwater video records of spawning in a recovering population from the Drummond Island Refuge (Lake Huron) represent the first reported direct observations of lake trout spawning in the Laurentian Great Lakes. These observations provide new insight into lake trout spawning behavior and expand the current conceptual model. Lake trout spawning consisted of at least four distinct behaviors: hovering, traveling, sinking, and gamete release. Hovering is a new courtship behavior that has not been previously described. The apparent concentration of hovering near the margin of the spawning grounds suggests that courtship and mate selection might be isolated from the spawning act (i.e., traveling, sinking, and gamete release). Moreover, we interpret jockeying for position displayed by males during traveling as a unique form of male-male competition that likely evolved in concert with the switch from redd-building to itinerant spawning in lake trout. Unlike previous models, which suggested that intra-sexual competition and mate selection do not occur in lake trout, our model includes both and is therefore consistent with evolutionary theory, given that the sex ratio on spawning grounds is skewed heavily towards males. The model presented in this paper is intended as a working hypothesis, and further revision may become necessary as we gain a more complete understanding of lake trout spawning behavior.

","language":"English","publisher":"Springer","doi":"10.1007/s10641-014-0247-6","usgsCitation":"Binder, T., Thompson, H.T., Muir, A., Riley, S., Marsden, J., Bronte, C.R., and Krueger, C., 2015, New insight into the spawning behavior of lake trout, Salvelinus namaycush, from a recovering population in the Laurentian Great Lakes: Environmental Biology of Fishes, v. 98, no. 1, p. 173-181, https://doi.org/10.1007/s10641-014-0247-6.","productDescription":"9 p.","startPage":"173","endPage":"181","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-049554","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":286943,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":286942,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10641-014-0247-6"}],"otherGeospatial":"Drummond Island Refuge;Lake Huron","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -84.0484,45.8339 ], [ -84.0484,46.2924 ], [ -83.3463,46.2924 ], [ -83.3463,45.8339 ], [ -84.0484,45.8339 ] ] ] } } ] }","volume":"98","issue":"1","noUsgsAuthors":false,"publicationDate":"2014-03-06","publicationStatus":"PW","scienceBaseUri":"5369f651e4b063fb73c0a9ec","contributors":{"authors":[{"text":"Binder, Thomas R.","contributorId":23056,"corporation":false,"usgs":false,"family":"Binder","given":"Thomas R.","affiliations":[{"id":7019,"text":"Great Lakes Fishery Commission","active":true,"usgs":false}],"preferred":false,"id":490142,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thompson, Henry T. 0000-0002-3730-9322 hthompson@usgs.gov","orcid":"https://orcid.org/0000-0002-3730-9322","contributorId":5028,"corporation":false,"usgs":true,"family":"Thompson","given":"Henry","email":"hthompson@usgs.gov","middleInitial":"T.","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":490140,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Muir, Andrew M.","contributorId":103933,"corporation":false,"usgs":false,"family":"Muir","given":"Andrew M.","affiliations":[],"preferred":false,"id":490146,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Riley, Stephen C.","contributorId":84183,"corporation":false,"usgs":true,"family":"Riley","given":"Stephen C.","affiliations":[],"preferred":false,"id":490145,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Marsden, J. Ellen","contributorId":10367,"corporation":false,"usgs":true,"family":"Marsden","given":"J. Ellen","affiliations":[],"preferred":false,"id":490141,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Bronte, Charles R.","contributorId":83050,"corporation":false,"usgs":true,"family":"Bronte","given":"Charles","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":490144,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Krueger, Charles C.","contributorId":67821,"corporation":false,"usgs":false,"family":"Krueger","given":"Charles C.","affiliations":[{"id":7019,"text":"Great Lakes Fishery Commission","active":true,"usgs":false}],"preferred":false,"id":490143,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70103310,"text":"70103310 - 2015 - High-resolution paleoclimatology of the Santa Barbara Basin during the Medieval Climate Anomaly and early Little Ice Age based on diatom and silicoflagellate assemblages in Kasten core SPR0901-02KC","interactions":[],"lastModifiedDate":"2015-11-09T10:06:27","indexId":"70103310","displayToPublicDate":"2014-05-05T14:54:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3217,"text":"Quaternary International","active":true,"publicationSubtype":{"id":10}},"title":"High-resolution paleoclimatology of the Santa Barbara Basin during the Medieval Climate Anomaly and early Little Ice Age based on diatom and silicoflagellate assemblages in Kasten core SPR0901-02KC","docAbstract":"

Diatom and silicoflagellate assemblages documented in a high-resolution time series spanning 800 to 1600 AD in varved sediment recovered in Kasten core SPR0901-02KC (34°16.845’ N, 120°02.332’ W, water depth 588 m) from the Santa Barbara Basin (SBB) reveal that SBB surface water conditions during the Medieval Climate Anomaly (MCA) and the early part of the Little Ice Age (LIA) were not extreme by modern standards, mostly falling within one standard deviation of mean conditions during the pre anthropogenic interval of 1748 to 1900. No clear differences between the character of MCA and the early LIA conditions are apparent. During intervals of extreme droughts identified by terrigenous proxy scanning XRF analyses, diatom and silicoflagellate proxies for coastal upwelling typically exceed one standard deviation above mean values for 1748-1900, supporting the hypothesis that droughts in southern California are associated with cooler (or La Niña-like) sea surface temperatures (SSTs). Increased percentages of diatoms transported downslope generally coincide with intervals of increased siliciclastic flux to the SBB identified by scanning XRF analyses. Diatom assemblages suggest only two intervals of the MCA (at ~897 to 922 and ~1151 to 1167) when proxy SSTs exceeded one standard deviation above mean values for 1748 to 1900. Conversely, silicoflagellates imply extreme warm water events only at ~830 to 860 (early MCA) and ~1360 to 1370 (early LIA) that are not supported by the diatom data. Silicoflagellates appear to be more suitable for characterizing average climate during the 5 to 11 year-long sample intervals studied in the SPR0901-02KC core than diatoms, probably because diatom relative abundances may be dominated by seasonal blooms of a particular year.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.quaint.2014.04.020","usgsCitation":"Barron, J.A., Bukry, D.B., and Hendy, I.L., 2015, High-resolution paleoclimatology of the Santa Barbara Basin during the Medieval Climate Anomaly and early Little Ice Age based on diatom and silicoflagellate assemblages in Kasten core SPR0901-02KC: Quaternary International, v. 387, p. 13-22, https://doi.org/10.1016/j.quaint.2014.04.020.","productDescription":"10 p.","startPage":"13","endPage":"22","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-051912","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":286903,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":286826,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.quaint.2014.04.020"}],"country":"United States","state":"California","otherGeospatial":"Santa Barbara Basin","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -120.50000,33.666667 ], [ -120.50000,34.666667 ], [ -119.00000,34.666667 ], [ -119.00000,33.666667 ], [ -120.50000,33.666667 ] ] ] } } ] }","volume":"387","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5368a4d1e4b059f7e82882ff","contributors":{"authors":[{"text":"Barron, John A. 0000-0002-9309-1145 jbarron@usgs.gov","orcid":"https://orcid.org/0000-0002-9309-1145","contributorId":2222,"corporation":false,"usgs":true,"family":"Barron","given":"John","email":"jbarron@usgs.gov","middleInitial":"A.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":493257,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bukry, David B.","contributorId":87070,"corporation":false,"usgs":true,"family":"Bukry","given":"David","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":493259,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hendy, Ingrid L.","contributorId":67416,"corporation":false,"usgs":true,"family":"Hendy","given":"Ingrid","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":493258,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70115357,"text":"70115357 - 2015 - Change in agricultural land use constrains adaptation of national wildlife refuges to climate change","interactions":[],"lastModifiedDate":"2015-02-09T15:02:31","indexId":"70115357","displayToPublicDate":"2014-05-01T10:54:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1531,"text":"Environmental Conservation","active":true,"publicationSubtype":{"id":10}},"title":"Change in agricultural land use constrains adaptation of national wildlife refuges to climate change","docAbstract":"

Land-use change around protected areas limits their ability to conserve biodiversity by altering ecological processes such as natural hydrologic and disturbance regimes, facilitating species invasions, and interfering with dispersal of organisms. This paper informs USA National Wildlife Refuge System conservation planning by predicting future land-use change on lands within 25 km distance of 461 refuges in the USA using an econometric model. The model contained two differing policy scenarios, namely a ‘business-as-usual’ scenario and a ‘pro-agriculture’ scenario. Regardless of scenario, by 2051, forest cover and urban land use were predicted to increase around refuges, while the extent of range and pasture was predicted to decrease; cropland use decreased under the business-as-usual scenario, but increased under the pro-agriculture scenario. Increasing agricultural land value under the pro-agriculture scenario slowed an expected increase in forest around refuges, and doubled the rate of range and pasture loss. Intensity of land-use change on lands surrounding refuges differed by regions. Regional differences among scenarios revealed that an understanding of regional and local land-use dynamics and management options was an essential requirement to effectively manage these conserved lands. Such knowledge is particularly important given the predicted need to adapt to a changing global climate.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Conservation","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Cambridge University Press","doi":"10.1017/S0376892914000174","usgsCitation":"Hamilton, C., Thogmartin, W.E., Radeloff, V., Plantinga, A.J., Heglund, P., Martinuzzi, S., and Pidgeon, A.M., 2015, Change in agricultural land use constrains adaptation of national wildlife refuges to climate change: Environmental Conservation, v. 42, no. 1, p. 12-19, https://doi.org/10.1017/S0376892914000174.","productDescription":"8 p.","startPage":"12","endPage":"19","numberOfPages":"8","onlineOnly":"Y","additionalOnlineFiles":"N","ipdsId":"IP-053578","costCenters":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"links":[{"id":289369,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":289356,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1017/S0376892914000174"}],"country":"United States","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124.8,24.5 ], [ -124.8,49.383333 ], [ -66.95,49.383333 ], [ -66.95,24.5 ], [ -124.8,24.5 ] ] ] } } ] }","volume":"42","issue":"1","noUsgsAuthors":false,"publicationDate":"2014-05-22","publicationStatus":"PW","scienceBaseUri":"53b7b0c9e4b0388651d9166d","contributors":{"authors":[{"text":"Hamilton, Christopher M.","contributorId":27767,"corporation":false,"usgs":true,"family":"Hamilton","given":"Christopher M.","affiliations":[],"preferred":false,"id":495593,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thogmartin, Wayne E. 0000-0002-2384-4279 wthogmartin@usgs.gov","orcid":"https://orcid.org/0000-0002-2384-4279","contributorId":2545,"corporation":false,"usgs":true,"family":"Thogmartin","given":"Wayne","email":"wthogmartin@usgs.gov","middleInitial":"E.","affiliations":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":495591,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Radeloff, Volker C.","contributorId":76169,"corporation":false,"usgs":true,"family":"Radeloff","given":"Volker C.","affiliations":[],"preferred":false,"id":495596,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Plantinga, Andrew J.","contributorId":75413,"corporation":false,"usgs":true,"family":"Plantinga","given":"Andrew","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":495595,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Heglund, Patricia J.","contributorId":51248,"corporation":false,"usgs":true,"family":"Heglund","given":"Patricia J.","affiliations":[],"preferred":false,"id":495594,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Martinuzzi, Sebastian","contributorId":17491,"corporation":false,"usgs":true,"family":"Martinuzzi","given":"Sebastian","affiliations":[],"preferred":false,"id":495592,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Pidgeon, Anna M.","contributorId":84243,"corporation":false,"usgs":true,"family":"Pidgeon","given":"Anna","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":495597,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70155944,"text":"70155944 - 2015 - Real-time inversions for finite fault slip models and rupture geometry based on high-rate GPS data","interactions":[],"lastModifiedDate":"2015-08-13T12:59:29","indexId":"70155944","displayToPublicDate":"2014-04-17T13:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2312,"text":"Journal of Geophysical Research","active":true,"publicationSubtype":{"id":10}},"title":"Real-time inversions for finite fault slip models and rupture geometry based on high-rate GPS data","docAbstract":"

We present an inversion strategy capable of using real-time high-rate GPS data to simultaneously solve for a distributed slip model and fault geometry in real time as a rupture unfolds. We employ Bayesian inference to find the optimal fault geometry and the distribution of possible slip models for that geometry using a simple analytical solution. By adopting an analytical Bayesian approach, we can solve this complex inversion problem (including calculating the uncertainties on our results) in real time. Furthermore, since the joint inversion for distributed slip and fault geometry can be computed in real time, the time required to obtain a source model of the earthquake does not depend on the computational cost. Instead, the time required is controlled by the duration of the rupture and the time required for information to propagate from the source to the receivers. We apply our modeling approach, called Bayesian Evidence-based Fault Orientation and Real-time Earthquake Slip, to the 2011 Tohoku-oki earthquake, 2003 Tokachi-oki earthquake, and a simulated Hayward fault earthquake. In all three cases, the inversion recovers the magnitude, spatial distribution of slip, and fault geometry in real time. Since our inversion relies on static offsets estimated from real-time high-rate GPS data, we also present performance tests of various approaches to estimating quasi-static offsets in real time. We find that the raw high-rate time series are the best data to use for determining the moment magnitude of the event, but slightly smoothing the raw time series helps stabilize the inversion for fault geometry.

","language":"English","publisher":"American Geophysical Union","doi":"10.1002/2013JB010622","usgsCitation":"Minson, S.E., Murray, J.R., Langbein, J.O., and Gomberg, J.S., 2015, Real-time inversions for finite fault slip models and rupture geometry based on high-rate GPS data: Journal of Geophysical Research, v. 119, no. 4, p. 3201-3231, https://doi.org/10.1002/2013JB010622.","productDescription":"31 p.","startPage":"3201","endPage":"3231","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-051917","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":472482,"rank":0,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://resolver.caltech.edu/CaltechAUTHORS:20140725-094124222","text":"External Repository"},{"id":306652,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"119","issue":"4","publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"noUsgsAuthors":false,"publicationDate":"2014-04-17","publicationStatus":"PW","scienceBaseUri":"55cdbfbbe4b08400b1fe142f","contributors":{"authors":[{"text":"Minson, Sarah E. 0000-0001-5869-3477 sminson@usgs.gov","orcid":"https://orcid.org/0000-0001-5869-3477","contributorId":5357,"corporation":false,"usgs":true,"family":"Minson","given":"Sarah","email":"sminson@usgs.gov","middleInitial":"E.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":567303,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Murray, Jessica R. 0000-0002-6144-1681 jrmurray@usgs.gov","orcid":"https://orcid.org/0000-0002-6144-1681","contributorId":2759,"corporation":false,"usgs":true,"family":"Murray","given":"Jessica","email":"jrmurray@usgs.gov","middleInitial":"R.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":567304,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Langbein, John O. 0000-0002-7821-8101 langbein@usgs.gov","orcid":"https://orcid.org/0000-0002-7821-8101","contributorId":3293,"corporation":false,"usgs":true,"family":"Langbein","given":"John","email":"langbein@usgs.gov","middleInitial":"O.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":567305,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gomberg, Joan S. 0000-0002-0134-2606 gomberg@usgs.gov","orcid":"https://orcid.org/0000-0002-0134-2606","contributorId":1269,"corporation":false,"usgs":true,"family":"Gomberg","given":"Joan","email":"gomberg@usgs.gov","middleInitial":"S.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":567306,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70048328,"text":"70048328 - 2015 - Simulation of water-table aquifers using specified saturated thickness","interactions":[],"lastModifiedDate":"2021-08-27T16:53:35.611776","indexId":"70048328","displayToPublicDate":"2014-02-20T13:20:04","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"Simulation of water-table aquifers using specified saturated thickness","docAbstract":"

Simulating groundwater flow in a water-table (unconfined) aquifer can be difficult because the saturated thickness available for flow depends on model-calculated hydraulic heads. It is often possible to realize substantial time savings and still obtain accurate head and flow solutions by specifying an approximate saturated thickness a priori, thus linearizing this aspect of the model. This specified-thickness approximation often relies on the use of the “confined” option in numerical models, which has led to confusion and criticism of the method. This article reviews the theoretical basis for the specified-thickness approximation, derives an error analysis for relatively ideal problems, and illustrates the utility of the approximation with a complex test problem. In the transient version of our complex test problem, the specified-thickness approximation produced maximum errors in computed drawdown of about 4% of initial aquifer saturated thickness even when maximum drawdowns were nearly 20% of initial saturated thickness. In the final steady-state version, the approximation produced maximum errors in computed drawdown of about 20% of initial aquifer saturated thickness (mean errors of about 5%) when maximum drawdowns were about 35% of initial saturated thickness. In early phases of model development, such as during initial model calibration efforts, the specified-thickness approximation can be a very effective tool to facilitate convergence. The reduced execution time and increased stability obtained through the approximation can be especially useful when many model runs are required, such as during inverse model calibration, sensitivity and uncertainty analyses, multimodel analysis, and development of optimal resource management scenarios.

","language":"English","publisher":"Wiley","doi":"10.1111/gwat.12164","usgsCitation":"Sheets, R., Hill, M.C., Haitjema, H.M., Provost, A., and Masterson, J., 2015, Simulation of water-table aquifers using specified saturated thickness: Ground Water, v. 53, no. 1, p. 151-157, https://doi.org/10.1111/gwat.12164.","productDescription":"7 p.","startPage":"151","endPage":"157","numberOfPages":"7","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-051323","costCenters":[{"id":466,"text":"New England Water Science Center","active":true,"usgs":true},{"id":509,"text":"Office of the Associate Director for Water","active":true,"usgs":true}],"links":[{"id":282837,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"53","issue":"1","noUsgsAuthors":false,"publicationDate":"2014-02-06","publicationStatus":"PW","scienceBaseUri":"54dd2c59e4b08de9379b3743","contributors":{"authors":[{"text":"Sheets, Rodney A. rasheets@usgs.gov","contributorId":1848,"corporation":false,"usgs":true,"family":"Sheets","given":"Rodney A.","email":"rasheets@usgs.gov","affiliations":[{"id":35860,"text":"Ohio-Kentucky-Indiana Water Science Center","active":true,"usgs":true}],"preferred":true,"id":484337,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hill, Mary C. mchill@usgs.gov","contributorId":974,"corporation":false,"usgs":true,"family":"Hill","given":"Mary","email":"mchill@usgs.gov","middleInitial":"C.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":484336,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Haitjema, Henk M.","contributorId":74678,"corporation":false,"usgs":true,"family":"Haitjema","given":"Henk","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":484339,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Provost, Alden M.","contributorId":85652,"corporation":false,"usgs":true,"family":"Provost","given":"Alden M.","affiliations":[],"preferred":false,"id":484340,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Masterson, John P. 0000-0003-3202-4413 jpmaster@usgs.gov","orcid":"https://orcid.org/0000-0003-3202-4413","contributorId":1865,"corporation":false,"usgs":true,"family":"Masterson","given":"John P.","email":"jpmaster@usgs.gov","affiliations":[{"id":466,"text":"New England Water Science Center","active":true,"usgs":true}],"preferred":false,"id":484338,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70136228,"text":"70136228 - 2015 - Assessing stand water use in four coastal wetland forests using sapflow techniques: annual estimates, errors and associated uncertainties","interactions":[],"lastModifiedDate":"2015-01-09T13:22:06","indexId":"70136228","displayToPublicDate":"2014-01-01T00:00:00","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":"Assessing stand water use in four coastal wetland forests using sapflow techniques: annual estimates, errors and associated uncertainties","docAbstract":"

Forests comprise approximately 37% of the terrestrial land surface and influence global water cycling. However, very little attention has been directed towards understanding environmental impacts on stand water use (S) or in identifying rates of S from specific forested wetlands. Here, we use sapflow techniques to address two separate but linked objectives: (1) determine S in four, hydrologically distinctive South Carolina (USA) wetland forests from 2009–2010 and (2) describe potential error, uncertainty and stand-level variation associated with these assessments. Sapflow measurements were made from a number of tree species for approximately 2–8 months over 2 years to initiate the model, which was applied to canopy trees (DBH > 10–20 cm). We determined that S in three healthy forested wetlands varied from 1.97–3.97 mm day−1 or 355–687 mm year−1 when scaled. In contrast, saltwater intrusion impacted individual tree physiology and size class distributions on a fourth site, which decreased S to 0.61–1.13 mm day−1 or 110–196 mm year−1. The primary sources of error in estimations using sapflow probes would relate to calibration of probes and standardization relative to no flow periods and accounting for accurate sapflow attenuation with radial depth into the sapwood by species and site. Such inherent variation in water use among wetland forest stands makes small differences in S (<200 mm year−1) difficult to detect statistically through modelling, even though small differences may be important to local water cycling. These data also represent some of the first assessments of S from temperate, coastal forested wetlands along the Atlantic coast of the USA.

","language":"English","publisher":"Wiley","doi":"10.1002/hyp.10130","usgsCitation":"Krauss, K.W., Duberstein, J., and Conner, W.H., 2015, Assessing stand water use in four coastal wetland forests using sapflow techniques: annual estimates, errors and associated uncertainties: Hydrological Processes, v. 29, no. 1, p. 112-127, https://doi.org/10.1002/hyp.10130.","productDescription":"16 p.","startPage":"112","endPage":"127","numberOfPages":"16","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-043270","costCenters":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true}],"links":[{"id":297107,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"29","issue":"1","noUsgsAuthors":false,"publicationDate":"2014-01-22","publicationStatus":"PW","scienceBaseUri":"54dd2b3ce4b08de9379b32ba","contributors":{"authors":[{"text":"Krauss, Ken W. 0000-0003-2195-0729 kraussk@usgs.gov","orcid":"https://orcid.org/0000-0003-2195-0729","contributorId":2017,"corporation":false,"usgs":true,"family":"Krauss","given":"Ken","email":"kraussk@usgs.gov","middleInitial":"W.","affiliations":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":537215,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Duberstein, Jamie A.","contributorId":91007,"corporation":false,"usgs":false,"family":"Duberstein","given":"Jamie A.","affiliations":[{"id":7084,"text":"Clemson University","active":true,"usgs":false}],"preferred":false,"id":537216,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Conner, William H.","contributorId":79376,"corporation":false,"usgs":false,"family":"Conner","given":"William","email":"","middleInitial":"H.","affiliations":[{"id":7084,"text":"Clemson University","active":true,"usgs":false}],"preferred":false,"id":537217,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70125328,"text":"sir20145140 - 2015 - Hydrogeologic characterization and assessment of bioremediation of chlorinated benzenes and benzene in wetland areas, Standard Chlorine of Delaware, Inc. Superfund Site, New Castle County, Delaware, 2009-12","interactions":[],"lastModifiedDate":"2018-03-21T15:42:52","indexId":"sir20145140","displayToPublicDate":"2014-01-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2014-5140","title":"Hydrogeologic characterization and assessment of bioremediation of chlorinated benzenes and benzene in wetland areas, Standard Chlorine of Delaware, Inc. Superfund Site, New Castle County, Delaware, 2009-12","docAbstract":"

Wetlands at the Standard Chlorine of Delaware, Inc. Superfund Site (SCD) in New Castle County, Delaware, are affected by contamination with chlorobenzenes and benzene from past waste storage and disposal, spills, leaks, and contaminated groundwater discharge. In cooperation with the U.S. Environmental Protection Agency, the U.S. Geological Survey began an investigation in June 2009 to characterize the hydrogeology and geochemistry in the wetlands and assess the feasibility of monitored natural attenuation and enhanced bioremediation as remedial strategies. Groundwater flow in the wetland study area is predominantly vertically upward in the wetland sediments and the underlying aquifer, and groundwater discharge accounts for a minimum of 47 percent of the total discharge for the subwatershed of tidal Red Lion Creek. Thus, groundwater transport of contaminants to surface water could be significant. The major contaminants detected in groundwater in the wetland study area included benzene, monochlorobenzene, and tri- and di-chlorobenzenes. Shallow wetland groundwater in the northwest part of the wetland study area was characterized by high concentrations of total chlorinated benzenes and benzene (maximum about 75,000 micrograms per liter [μg/L]), low pH, and high chloride. In the northeast part of the wetland study area, wetland groundwater had low to moderate concentrations of total chlorinated benzenes and benzene (generally not greater than 10,000 μg/L), moderate pH, and high sulfate concentrations. Concentrations in the groundwater in excess of 1 percent of the solubility of the individual chlorinated benzenes indicate that a contaminant source is present in the wetland sediments as dense nonaqueous phase liquids (DNAPLs). Consistently higher contaminant concentrations in the shallow wetland groundwater than deeper in the wetland sediments or the aquifer also indicate a continued source in the wetland sediments, which could include dissolution of DNAPLs and desorption from the sediments.

When highly reducing, methanogenic, or sulfate-reducing conditions existed in the wetland groundwater, molar composition of the volatile organic compounds (VOCs) showed that chlorobenzene and benzene were predominant, indicating biodegradation of the chlorinated benzenes through reductive dechlorination pathways. Temporal changes in redox conditions between 2009 and 2011–12 have shifted the locations in the wetland study area where reductive dechlorination is evident. Microbial community analyses of sediment showed relatively high cell numbers and diversity of populations (Dehalococcoides, Dehalobacter, Desulfitobacterium, and Geobacter) that are known to contain species capable of reductive dechlorination, confirming groundwater geochemistry evidence of the occurrence of reductive dechlorination. Natural attenuation was not sufficient, however, to reduce total VOC concentrations along upward groundwater flowpaths in the wetland sediments, most likely due to the additional source of contaminants in the upper sediments. In situ microcosms that were unamended except for the addition of 13C-labeled contaminants in some treatments, confirmed that the native microbial community was able to biodegrade the higher chlorinated benzenes through reductive dechlorination and that 1,2-dichlorobenzene, chlorobenzene, and benzene could be degraded to carbon dioxide through oxidation pathways. Microcosms that were bioaugmented with the anaerobic dechlorinating consortium WBC-2 and deployed in the wetland sediments showed reductive dechlorination of tri-, di-, and monochlorobenzene, and 13C-chlorobenzene treatments showed complete degradation of chlorobenzene to carbon dioxide under anaerobic conditions.

Experiments with a continuous flow, fixed-film bioreactor seeded with native microorganisms in groundwater from the wetland area showed both aerobic and anaerobic biodegradation of dichlorobenzenes, monochlorobenzene, and benzene, although monochlorobenzene and benzene degradation rates decreased under anaerobic conditions compared to aerobic conditions. In two bioreactors with established biofilms of WBC-2, percent removals of all chlorinated benzene compounds (medians of 86 to 94 percent) under anaerobic conditions were as high as those observed for the bioreactors seeded only with native microorganisms from the site groundwater, and benzene removal was greater in the WBC-2 bioaugmented bioreactors. The high percent removals in the WBC-2 bioreactors without the need for an acclimation period indicates that the same dechlorinators are involved in the chlorinated benzene degradation as those for the chlorinated ethanes and ethenes that the culture was developed to degrade. The ability of the WBC-2 culture to completely reduce the chlorinated benzenes and benzene, even in the presence of high sulfate and sulfide concentrations, is unique for known dechlorinating cultures. The availability of the established culture WBC-2, as well as the ability of the native wetland microbial community to degrade the site contaminants under anaerobic and aerobic conditions, provides flexibility in considering bioremediation options for the wetland areas at SCD.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston VA","doi":"10.3133/sir20145140","collaboration":"U.S. Environmental Protection Agency","usgsCitation":"Lorah, M.M., Walker, C.W., Baker, A.C., Teunis, J.A., Emily Majcher, Brayton, M.J., Raffensperger, J.P., and Cozzarelli, I.M., 2015, Hydrogeologic characterization and assessment of bioremediation of chlorinated benzenes and benzene in wetland areas, Standard Chlorine of Delaware, Inc. Superfund Site, New Castle County, Delaware, 2009-12: U.S. Geological Survey Scientific Investigations Report 2014-5140, x, 89 p., https://doi.org/10.3133/sir20145140.","productDescription":"x, 89 p.","numberOfPages":"106","ipdsId":"IP-057395","costCenters":[{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true}],"links":[{"id":352718,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":297248,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2014/5140/"}],"country":"United States","state":"Delaware","county":"New Castle County","otherGeospatial":"Standard Chlorine of Delaware, Inc. Superfund Site","publishingServiceCenter":{"id":10,"text":"Baltimore PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"545c8d9fe4b0ba8303f70391","contributors":{"authors":[{"text":"Lorah, Michelle M. 0000-0002-9236-587X mmlorah@usgs.gov","orcid":"https://orcid.org/0000-0002-9236-587X","contributorId":1437,"corporation":false,"usgs":true,"family":"Lorah","given":"Michelle","email":"mmlorah@usgs.gov","middleInitial":"M.","affiliations":[{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true}],"preferred":true,"id":538422,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Walker, Charles W. cwwalker@usgs.gov","contributorId":138712,"corporation":false,"usgs":true,"family":"Walker","given":"Charles","email":"cwwalker@usgs.gov","middleInitial":"W.","affiliations":[{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true}],"preferred":false,"id":538423,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Baker, Anna C. 0000-0001-8194-7535 abaker@usgs.gov","orcid":"https://orcid.org/0000-0001-8194-7535","contributorId":4689,"corporation":false,"usgs":true,"family":"Baker","given":"Anna","email":"abaker@usgs.gov","middleInitial":"C.","affiliations":[{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true}],"preferred":true,"id":538424,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Teunis, Jessica A. jateunis@usgs.gov","contributorId":5657,"corporation":false,"usgs":true,"family":"Teunis","given":"Jessica","email":"jateunis@usgs.gov","middleInitial":"A.","affiliations":[{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true}],"preferred":true,"id":538425,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Emily Majcher","contributorId":138713,"corporation":false,"usgs":false,"family":"Emily Majcher","affiliations":[{"id":7050,"text":"Contractor, ETI","active":true,"usgs":false}],"preferred":false,"id":538426,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Brayton, Michael J. mbrayton@usgs.gov","contributorId":2993,"corporation":false,"usgs":true,"family":"Brayton","given":"Michael","email":"mbrayton@usgs.gov","middleInitial":"J.","affiliations":[{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true}],"preferred":true,"id":538427,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Raffensperger, Jeff P. 0000-0001-9275-6646 jpraffen@usgs.gov","orcid":"https://orcid.org/0000-0001-9275-6646","contributorId":199119,"corporation":false,"usgs":true,"family":"Raffensperger","given":"Jeff","email":"jpraffen@usgs.gov","middleInitial":"P.","affiliations":[{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true}],"preferred":true,"id":538428,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Cozzarelli, Isabelle M. 0000-0002-5123-1007 icozzare@usgs.gov","orcid":"https://orcid.org/0000-0002-5123-1007","contributorId":1693,"corporation":false,"usgs":true,"family":"Cozzarelli","given":"Isabelle","email":"icozzare@usgs.gov","middleInitial":"M.","affiliations":[{"id":49175,"text":"Geology, Energy & Minerals Science Center","active":true,"usgs":true},{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":538429,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70048679,"text":"70048679 - 2015 - Quantifying climate change mitigation potential in Great Plains wetlands for three greenhouse gas emission scenarios","interactions":[],"lastModifiedDate":"2017-04-06T16:44:14","indexId":"70048679","displayToPublicDate":"2013-10-29T12:42:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2764,"text":"Mitigation and Adaptation Strategies for Global Change","active":true,"publicationSubtype":{"id":10}},"title":"Quantifying climate change mitigation potential in Great Plains wetlands for three greenhouse gas emission scenarios","docAbstract":"

We examined opportunities for avoided loss of wetland carbon stocks in the Great Plains of the United States in the context of future agricultural expansion through analysis of land-use land-cover (LULC) change scenarios, baseline carbon datasets and biogeochemical model outputs. A wetland map that classifies wetlands according to carbon pools was created to describe future patterns of carbon loss and potential carbon savings. Wetland avoided loss scenarios, superimposed upon LULC change scenarios, quantified carbon stocks preserved under criteria of carbon densities or land value plus cropland suitability. Up to 3420 km2 of wetlands may be lost in the region by 2050, mainly due to conversion of herbaceous wetlands in the Temperate Prairies where soil organic carbon (SOC) is highest. SOC loss would be approximately 0.20 ± 0.15 megagrams of carbon per hectare per year (MgC ha−1 yr−1), depending upon tillage practices on converted wetlands, and total ecosystem carbon loss in woody wetlands would be approximately 0.81 ± 0.41 MgC ha−1 yr−1, based on biogeochemical model results. Among wetlands vulnerable to conversion, wetlands in the Northern Glaciated Plains and Lake Agassiz Plains ecoregions exhibit very high mean SOC and on average, relatively low land values, potentially creating economically competitive opportunities for avoided carbon loss. This mitigation scenarios approach may be adapted by managers using their own preferred criteria to select sites that best meet their objectives. Results can help prioritize field-based assessments, where site-level investigations of carbon stocks, land value, and consideration of local priorities for climate change mitigation programs are needed.

","language":"English","publisher":"Springer","doi":"10.1007/s11027-013-9500-0","usgsCitation":"Byrd, K.B., Ratliff, J.L., Wein, A., Bliss, N.B., Sleeter, B.M., Sohl, T.L., and Li, Z., 2015, Quantifying climate change mitigation potential in Great Plains wetlands for three greenhouse gas emission scenarios: Mitigation and Adaptation Strategies for Global Change, v. 20, no. 3, p. 439-465, https://doi.org/10.1007/s11027-013-9500-0.","productDescription":"27 p.","startPage":"439","endPage":"465","onlineOnly":"Y","additionalOnlineFiles":"N","ipdsId":"IP-044709","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":657,"text":"Western Geographic Science Center","active":true,"usgs":true}],"links":[{"id":472488,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1007/s11027-013-9500-0","text":"Publisher Index Page"},{"id":278532,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":278531,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11027-013-9500-0"}],"country":"United States","otherGeospatial":"Great Plains","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -114.2,28.2 ], [ -114.2,49.2 ], [ -95.6,49.2 ], [ -95.6,28.2 ], [ -114.2,28.2 ] ] ] } } ] }","volume":"20","issue":"3","noUsgsAuthors":false,"publicationDate":"2013-09-10","publicationStatus":"PW","scienceBaseUri":"5270cafee4b0f7a10664c7a0","contributors":{"authors":[{"text":"Byrd, Kristin B. 0000-0002-5725-7486 kbyrd@usgs.gov","orcid":"https://orcid.org/0000-0002-5725-7486","contributorId":3814,"corporation":false,"usgs":true,"family":"Byrd","given":"Kristin","email":"kbyrd@usgs.gov","middleInitial":"B.","affiliations":[{"id":657,"text":"Western Geographic Science Center","active":true,"usgs":true}],"preferred":true,"id":485407,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ratliff, Jamie L. 0000-0002-9967-3314 jratliff@usgs.gov","orcid":"https://orcid.org/0000-0002-9967-3314","contributorId":665,"corporation":false,"usgs":true,"family":"Ratliff","given":"Jamie","email":"jratliff@usgs.gov","middleInitial":"L.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true},{"id":657,"text":"Western Geographic Science Center","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":485404,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wein, Anne 0000-0002-5516-3697 awein@usgs.gov","orcid":"https://orcid.org/0000-0002-5516-3697","contributorId":589,"corporation":false,"usgs":true,"family":"Wein","given":"Anne","email":"awein@usgs.gov","affiliations":[{"id":657,"text":"Western Geographic Science Center","active":true,"usgs":true}],"preferred":true,"id":485402,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bliss, Norman B. 0000-0003-2409-5211 bliss@usgs.gov","orcid":"https://orcid.org/0000-0003-2409-5211","contributorId":1921,"corporation":false,"usgs":true,"family":"Bliss","given":"Norman","email":"bliss@usgs.gov","middleInitial":"B.","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":485405,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sleeter, Benjamin M. 0000-0003-2371-9571 bsleeter@usgs.gov","orcid":"https://orcid.org/0000-0003-2371-9571","contributorId":3479,"corporation":false,"usgs":true,"family":"Sleeter","given":"Benjamin","email":"bsleeter@usgs.gov","middleInitial":"M.","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true},{"id":657,"text":"Western Geographic Science Center","active":true,"usgs":true}],"preferred":true,"id":485406,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"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":485403,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Li, Zhengpeng","contributorId":80812,"corporation":false,"usgs":true,"family":"Li","given":"Zhengpeng","affiliations":[],"preferred":false,"id":485408,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70146875,"text":"70146875 - 2015 - A spaceborne inventory of volcanic activity in Antarctica and southern oceans, 2000-10","interactions":[],"lastModifiedDate":"2015-04-23T11:30:30","indexId":"70146875","displayToPublicDate":"2013-08-01T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":814,"text":"Antarctic Science","onlineIssn":"1365-2079","printIssn":"0954-1020","active":true,"publicationSubtype":{"id":10}},"title":"A spaceborne inventory of volcanic activity in Antarctica and southern oceans, 2000-10","docAbstract":"

Of the more than twenty historically active volcanoes in Antarctica and the sub-Antarctic region only two, to our knowledge, host any ground-based monitoring instruments. Moreover, because of their remoteness, most of the volcanoes are seldom visited, thus relegating the monitoring of volcanism in this region almost entirely to satellites. In this study, high temporal resolution satellite data from the Hawaii Institute of Geophysics and Planetology's MODVOLC system using MODIS (Moderate Resolution Imaging Spectroradiometer) are complemented with high spatial resolution data (ASTER, or Advanced Spaceborne Thermal Emission and Reflection Radiometer, and similar sensors) to document volcanic activity throughout the region during the period 2000–10. Five volcanoes were observed in eruption (Mount Erebus, Mount Belinda, Mount Michael, Heard Island and McDonald Island), which were predominantly low-level and effusive in nature. Mount Belinda produced tephra, building a cinder cone in addition to an extensive lava field. Five volcanoes exhibited detectable thermal, and presumed fumarolic, activity (Deception, Zavodovski, Candlemas, Bristol, and Bellingshausen islands). A minor eruption reported at Marion Island was not detected in our survey due to its small size. This study also discovered a new active vent on Mount Michael, tracked dramatic vent enlargement on Heard Island, and provides an improved picture of the morphology of some of the volcanoes.

","language":"English","publisher":"Cambridge University Press","doi":"10.1017/S0954102013000436","usgsCitation":"Patrick, M.R., and Smellie, J.L., 2015, A spaceborne inventory of volcanic activity in Antarctica and southern oceans, 2000-10: Antarctic Science, v. 25, no. 4, p. 475-500, https://doi.org/10.1017/S0954102013000436.","productDescription":"26 p.","startPage":"475","endPage":"500","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-045805","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":299845,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"25","issue":"4","publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"noUsgsAuthors":false,"publicationDate":"2013-06-12","publicationStatus":"PW","scienceBaseUri":"553a17a9e4b0a658d792c870","contributors":{"authors":[{"text":"Patrick, Matthew R. 0000-0002-8042-6639 mpatrick@usgs.gov","orcid":"https://orcid.org/0000-0002-8042-6639","contributorId":2070,"corporation":false,"usgs":true,"family":"Patrick","given":"Matthew","email":"mpatrick@usgs.gov","middleInitial":"R.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":545428,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smellie, John L.","contributorId":140375,"corporation":false,"usgs":false,"family":"Smellie","given":"John","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":545429,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}} ,{"id":70142636,"text":"70142636 - 2015 - The use of wavenumber normalization in computing spatially averaged coherencies (KRSPAC) of microtremor data from asymmetric arrays","interactions":[],"lastModifiedDate":"2015-11-12T16:24:59","indexId":"70142636","displayToPublicDate":"2013-04-19T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":18,"text":"Abstract or summary"},"title":"The use of wavenumber normalization in computing spatially averaged coherencies (KRSPAC) of microtremor data from asymmetric arrays","docAbstract":"

The SPAC method of processing microtremor noise observations for estimation of Vs profiles has a limitation that the array has circular or triangular symmetry in order to allow spatial (azimuthal) averaging of inter-station coherencies over a constant station separation. Common processing methods allow for station separations to vary by typically ±10% in the azimuthal averaging before degradation of the SPAC spectrum is excessive. A limitation on use of high-wavenumbers in inversions of SPAC spectra to Vs profiles has been the requirement for exact array symmetry to avoid loss of information in the azimuthal averaging step. In this paper we develop a new wavenumber-normalised SPAC method (KRSPAC) where instead of performing averaging of sets of coherency versus frequency spectra and then fitting to a model SPAC spectrum, we interpolate each spectrum to coherency versus k.r, where k and r are wavenumber and station separation respectively, and r may be different for each pair of stations. For fundamental mode Rayleigh-wave energy the model SPAC spectrum to be fitted reduces to Jo(kr). The normalization process changes with each iteration since k is a function of frequency and phase velocity and hence is updated each iteration. The method proves robust and is demonstrated on data acquired in the Santa Clara Valley, CA, (Site STGA) where an asymmetric array having station separations varying by a factor of 2 is compared with a conventional triangular array; a 300-mdeep borehole with a downhole Vs log provides nearby ground truth. The method is also demonstrated on data from the Pleasanton array, CA, where station spacings are irregular and vary from 400 to 1200 m. The KRSPAC method allows inversion of data using kr (unitless) values routinely up to 30, and occasionally up to 60. Thus despite the large and irregular station spacings, this array permits resolution of Vs as fine as 15 m for the near-surface sediments, and down to a maximum depth of 2.5 km.

","conferenceTitle":"SSA 2013","conferenceDate":"17-19 April 2013","conferenceLocation":"Salt Lake City, Utah","language":"English","publisher":"Seismological Society of America","usgsCitation":"Asten, M., Stephenson, W.J., and Hartzell, S.H., 2015, The use of wavenumber normalization in computing spatially averaged coherencies (KRSPAC) of microtremor data from asymmetric arrays, SSA 2013, Salt Lake City, Utah, 17-19 April 2013, 1 p.","productDescription":"1 p.","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-064051","costCenters":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"links":[{"id":311276,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"publishingServiceCenter":{"id":2,"text":"Denver PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5645c65fe4b0e2669b30f229","contributors":{"authors":[{"text":"Asten, M.W.","contributorId":101952,"corporation":false,"usgs":true,"family":"Asten","given":"M.W.","email":"","affiliations":[],"preferred":false,"id":542075,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stephenson, William J. 0000-0001-8699-0786 wstephens@usgs.gov","orcid":"https://orcid.org/0000-0001-8699-0786","contributorId":695,"corporation":false,"usgs":true,"family":"Stephenson","given":"William","email":"wstephens@usgs.gov","middleInitial":"J.","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":542076,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hartzell, Stephen H. 0000-0003-0858-9043 shartzell@usgs.gov","orcid":"https://orcid.org/0000-0003-0858-9043","contributorId":2594,"corporation":false,"usgs":true,"family":"Hartzell","given":"Stephen","email":"shartzell@usgs.gov","middleInitial":"H.","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":542077,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70160574,"text":"70160574 - 2015 - Estimating evapotranspiration and groundwater flow from water-table fluctuations for a general wetland scenario","interactions":[],"lastModifiedDate":"2015-12-23T10:43:19","indexId":"70160574","displayToPublicDate":"2013-01-07T11:45:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1447,"text":"Ecohydrology","active":true,"publicationSubtype":{"id":10}},"title":"Estimating evapotranspiration and groundwater flow from water-table fluctuations for a general wetland scenario","docAbstract":"

The use of diurnal water-table fluctuation methods to calculate evapotranspiration (ET) and groundwater flow is of increasing interest in ecohydrological studies. Most studies of this type, however, have been located in riparian wetlands of semi-arid regions where groundwater levels are consistently below topographic surface elevations and precipitation events are infrequent. Current methodologies preclude application to a wider variety of wetland systems. In this study, we extended a method for estimating sub-daily ET and groundwater flow rates from water-level fluctuations to fit highly dynamic, non-riparian wetland scenarios. Modifications included (1) varying the specific yield to account for periodic flooded conditions and (2) relating empirically derived ET to estimated potential ET for days when precipitation events masked the diurnal signal. To demonstrate the utility of this method, we estimated ET and groundwater fluxes over two growing seasons (2006–2007) in 15 wetlands within a ridge-and-swale wetland complex of the Laurentian Great Lakes under flooded and non-flooded conditions. Mean daily ET rates for the sites ranged from 4.0 mm d−1 to 6.6 mm d−1. Shallow groundwater discharge rates resulting from evaporative demand ranged from 2.5 mm d−1 to 4.3 mm d−1. This study helps to expand our understanding of the evapotranspirative demand of plants under various hydrologic and climate conditions.

","language":"English","publisher":"Wiley-Blackwell","publisherLocation":"Chilchester, UK","doi":"10.1002/eco.1356","usgsCitation":"Carlson Mazur, M.L., Michael J. Wiley, and Douglas A. Wilcox, 2015, Estimating evapotranspiration and groundwater flow from water-table fluctuations for a general wetland scenario: Ecohydrology, v. 7, no. 2, p. 378-390, https://doi.org/10.1002/eco.1356.","productDescription":"13 p.","startPage":"378","endPage":"390","numberOfPages":"13","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-039002","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":472490,"rank":0,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hdl.handle.net/2027.42/106891","text":"External Repository"},{"id":312789,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Michigan","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -83.34537506103516,\n 44.84613295361055\n ],\n [\n -83.34537506103516,\n 44.862926272208234\n ],\n [\n -83.31516265869139,\n 44.862926272208234\n ],\n [\n -83.31516265869139,\n 44.84613295361055\n ],\n [\n -83.34537506103516,\n 44.84613295361055\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"7","issue":"2","publishingServiceCenter":{"id":6,"text":"Columbus PSC"},"noUsgsAuthors":false,"publicationDate":"2013-01-07","publicationStatus":"PW","scienceBaseUri":"567bd3bbe4b0a04ef491a1f7","contributors":{"authors":[{"text":"Carlson Mazur, Martha L.","contributorId":95377,"corporation":false,"usgs":true,"family":"Carlson Mazur","given":"Martha","email":"","middleInitial":"L.","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":false,"id":583175,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Michael J. Wiley","contributorId":150828,"corporation":false,"usgs":false,"family":"Michael J. Wiley","affiliations":[{"id":18114,"text":"Dept. of Natural Resources & Environment, University of Michigan","active":true,"usgs":false}],"preferred":false,"id":583177,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Douglas A. Wilcox","contributorId":150827,"corporation":false,"usgs":false,"family":"Douglas A. Wilcox","affiliations":[{"id":18113,"text":"Dept. of Environmental Science & Bio, SUNY-College, Brockport","active":true,"usgs":false}],"preferred":false,"id":583176,"contributorType":{"id":1,"text":"Authors"},"rank":12}]}} ,{"id":70145810,"text":"70145810 - 2015 - Pathologic and physiologic effects associated with long-term intracoelomic transmitters in captive Siberian sturgeon","interactions":[],"lastModifiedDate":"2016-06-01T14:03:43","indexId":"70145810","displayToPublicDate":"2013-01-01T00:00:00","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":"Pathologic and physiologic effects associated with long-term intracoelomic transmitters in captive Siberian sturgeon","docAbstract":"

Intracoelomic transmitters are commonly used to evaluate migratory patterns, distribution, and habitat use of many species of fish. Currently, transmitter implantation relies mostly on the assumption that transmitters do not cause any adverse physiological or pathological effects on the animal. To investigate these effects, we surgically implanted 60 Siberian Sturgeon Acipenser baeri with transmitters that weighed less than 2% of their body weight. Postoperative assessments were conducted at 1, 2, 8, 12, 26, and 55 weeks to evaluate surgical healing and transmitter retention. Blood samples were collected before and after the 55-week study for serum cortisol analysis. Overall transmitter loss was 32%. Minor to moderate adhesions were noted at necropsy but did not appear to affect organ function. One fish was noted to have an intraintestinal transmitter at necropsy, but the fish was in overall good health. Long-term transmitter presence does not appear to increase serum cortisol levels or affect overall growth more than nontransmitter fish. Although long-term telemetry studies can be undertaken with minimal concern for negative physiological or pathological effects from transmitters, researchers should be aware that transmitter loss rates may be higher than previously thought. Mechanisms for transmitter loss may include expulsion through the surgical incision, expulsion through the mucocutaneous junction between the large intestine and the vent, or intraintestinal capture and expulsion through the vent. Received February 10, 2013; accepted June 10, 2013

","language":"English","publisher":"American Fisheries Society","doi":"10.1080/02755947.2013.815668","usgsCitation":"Boone, S.S., Divers, S.J., Camus, A., Peterson, D.C., Jennings, C.A., Shelton, J.L., and Hernandez, S.M., 2015, Pathologic and physiologic effects associated with long-term intracoelomic transmitters in captive Siberian sturgeon: North American Journal of Fisheries Management, v. 33, no. 5, p. 869-877, https://doi.org/10.1080/02755947.2013.815668.","productDescription":"9 p.","startPage":"869","endPage":"877","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-037650","costCenters":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"links":[{"id":299538,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"5","publishingServiceCenter":{"id":8,"text":"Raleigh PSC"},"noUsgsAuthors":false,"publicationDate":"2013-08-13","publicationStatus":"PW","scienceBaseUri":"5527a2b3e4b026915857c854","contributors":{"authors":[{"text":"Boone, S. Shaun","contributorId":140153,"corporation":false,"usgs":false,"family":"Boone","given":"S.","email":"","middleInitial":"Shaun","affiliations":[{"id":13267,"text":"Warnell School of Forestry and Natural Resources, University of Georgia","active":true,"usgs":false}],"preferred":false,"id":544490,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Divers, Stephen J.","contributorId":112971,"corporation":false,"usgs":false,"family":"Divers","given":"Stephen","email":"","middleInitial":"J.","affiliations":[{"id":12697,"text":"University of Georgia","active":true,"usgs":false}],"preferred":false,"id":544491,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Camus, Alvin C.","contributorId":52908,"corporation":false,"usgs":false,"family":"Camus","given":"Alvin C.","affiliations":[{"id":12697,"text":"University of Georgia","active":true,"usgs":false}],"preferred":false,"id":544492,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Peterson, Douglas C.","contributorId":140154,"corporation":false,"usgs":false,"family":"Peterson","given":"Douglas","email":"","middleInitial":"C.","affiliations":[{"id":13267,"text":"Warnell School of Forestry and Natural Resources, University of Georgia","active":true,"usgs":false}],"preferred":false,"id":544493,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Jennings, Cecil A. 0000-0002-6159-6026 jennings@usgs.gov","orcid":"https://orcid.org/0000-0002-6159-6026","contributorId":874,"corporation":false,"usgs":true,"family":"Jennings","given":"Cecil","email":"jennings@usgs.gov","middleInitial":"A.","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":true,"id":544403,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Shelton, James L.","contributorId":85319,"corporation":false,"usgs":false,"family":"Shelton","given":"James","email":"","middleInitial":"L.","affiliations":[{"id":13267,"text":"Warnell School of Forestry and Natural Resources, University of Georgia","active":true,"usgs":false}],"preferred":false,"id":544494,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Hernandez, Sonia M.","contributorId":104367,"corporation":false,"usgs":false,"family":"Hernandez","given":"Sonia","email":"","middleInitial":"M.","affiliations":[{"id":13267,"text":"Warnell School of Forestry and Natural Resources, University of Georgia","active":true,"usgs":false}],"preferred":false,"id":544495,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70156831,"text":"70156831 - 2015 - Sequence stratigraphic framework of upper pliocene to holocene sediments of the Los Angeles Basin, California: Implications for aquifer architecture","interactions":[],"lastModifiedDate":"2017-05-10T13:24:26","indexId":"70156831","displayToPublicDate":"2012-12-31T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":4,"text":"Book"},"seriesNumber":"12","title":"Sequence stratigraphic framework of upper pliocene to holocene sediments of the Los Angeles Basin, California: Implications for aquifer architecture","docAbstract":"Executive Summary\nGroundwater provides more than one-third of the municipal water supply for the coastal Los Angeles Basin and defining the aquifer architecture is a high priority for ground-water managers. Sequence stratigraphy,\nthe state-of-the-art method for delineating reservoir geometry and continuity in the petroleum industry, is now being incorporated into ground water resource assessments and environmental investigations. By\nevaluating subsurface data using sequence stratigraphy, the geometry and distribution of aquifer and aquitard sediments are linked to the original depositional processes that formed the sediments. Skyline Ridge, Inc.,\nthe U.S. Geological Survey (USGS), in cooperation with Los Angeles County Department of Public Works (LACDPW) and the Water Replenishment District of Southern California (WRDSC) completed an\ninvestigation of the Wilmington – Long Beach area by integrating data from new exploratory research boreholes, marine reflection seismic, vintage land reflection seismic, and high-resolution gravity measurements.\nSequence stratigraphy is shown to define pathways for saltwater intrusion into freshwater coastal aquifers by integrating preexisting data with (1) the new borehole observations and (2) structural and physical\nproperties data derived from the geophysical measurements.\nBy constructing a series of seismic reflection and well log cross sections (presented as sheets), this investigation further defines and delineates ten sequences of Late Pliocene to Holocene age in the Wilmington –\nLong Beach area of the Los Angeles Basin. These sequences were first described by Ponti and others (2007), and the implications for sea water intrusion was discussed by Edwards and others (2009a). In addition,\nthis investigation presents regional seismic facies – environment of deposition maps for the five youngest sequences: 1) the Dominquez Sequence; 2) the Mesa Sequence; 3) the Pacific Sequence; the Harbor\nSequence; and 4) the Bent Spring Sequence.\nThe stratigraphic framework established in the Wilmington – Long Beach area is extended into the Central Basin of the greater Los Angeles area by utilizing 1980s and older vintage petroleum exploration land\nseismic reflection data. Tying this data to the available groundwater monitoring well network in the Central and West Coast Basins demonstrate aquifer correlation problems, and may provide insights into\nestablishing a more robust groundwater model for the greater Los Angeles Basin area.","language":"English","publisher":"Pacific Section, SEPM, Society for Sedimentary Geology","usgsCitation":"Ehman, K.D., Edwards, B.D., and Ponti, D.J., 2015, Sequence stratigraphic framework of upper pliocene to holocene sediments of the Los Angeles Basin, California: Implications for aquifer architecture, 49 p.","productDescription":"49 p.","ipdsId":"IP-042898","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":341072,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":341071,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://pacificsectionsepm.org/?page_id=84"}],"publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"591426c0e4b0e541a03e961a","contributors":{"authors":[{"text":"Ehman, Kenneth D.","contributorId":64745,"corporation":false,"usgs":true,"family":"Ehman","given":"Kenneth","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":570743,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Edwards, Brian D. bedwards@usgs.gov","contributorId":3161,"corporation":false,"usgs":true,"family":"Edwards","given":"Brian","email":"bedwards@usgs.gov","middleInitial":"D.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":570741,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ponti, Daniel J. 0000-0002-2437-5144 dponti@usgs.gov","orcid":"https://orcid.org/0000-0002-2437-5144","contributorId":1020,"corporation":false,"usgs":true,"family":"Ponti","given":"Daniel","email":"dponti@usgs.gov","middleInitial":"J.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":570742,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ]}