{"pageNumber":"98","pageRowStart":"2425","pageSize":"25","recordCount":4111,"records":[{"id":70031451,"text":"70031451 - 2007 - Rarity and diversity in forest ant assemblages of Great Smoky Mountains National Park","interactions":[],"lastModifiedDate":"2012-03-12T17:21:14","indexId":"70031451","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Rarity and diversity in forest ant assemblages of Great Smoky Mountains National Park","docAbstract":"We report on a systematic survey of the ant fauna occurring in hardwood forests in the Great Smoky Mountains National Park. At 22-mixed hardwood sites, we collected leaf-litter ant species using Winkler samplers. At eight of those sites, we also collected ants using pitfall and Malaise traps. In total, we collected 53 ant species. As shown in other studies, ant species richness tended to decline with increasing elevation. Leaf-litter ant assemblages were also highly nested. Several common species were both locally abundant and had broad distributions, while many other species were rarely detected. Winkler samplers, pitfall traps, and Malaise traps yielded samples that differed in composition, but not richness, from one another. Taken together, our work begins to illuminate the factors that govern the diversity, distribution, abundance, and perhaps rarity of ants of forested ecosystems in the Great Smoky Mountains National Park.","largerWorkTitle":"Southeastern Naturalist","language":"English","doi":"10.1656/1528-7092(2007)6[215:RADIFA]2.0.CO;2","issn":"15287092","usgsCitation":"Lessard, J., Dunn, R., Parker, C., and Sanders, N., 2007, Rarity and diversity in forest ant assemblages of Great Smoky Mountains National Park, in Southeastern Naturalist, v. 6, no. SPEC. ISS. 1, p. 215-228, https://doi.org/10.1656/1528-7092(2007)6[215:RADIFA]2.0.CO;2.","startPage":"215","endPage":"228","numberOfPages":"14","costCenters":[],"links":[{"id":239927,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212438,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1656/1528-7092(2007)6[215:RADIFA]2.0.CO;2"}],"volume":"6","issue":"SPEC. ISS. 1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a9530e4b0c8380cd81869","contributors":{"authors":[{"text":"Lessard, J.-P.","contributorId":37152,"corporation":false,"usgs":true,"family":"Lessard","given":"J.-P.","email":"","affiliations":[],"preferred":false,"id":431546,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dunn, R.R.","contributorId":45111,"corporation":false,"usgs":true,"family":"Dunn","given":"R.R.","email":"","affiliations":[],"preferred":false,"id":431547,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Parker, C.R.","contributorId":21892,"corporation":false,"usgs":true,"family":"Parker","given":"C.R.","email":"","affiliations":[],"preferred":false,"id":431545,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sanders, N.J.","contributorId":61639,"corporation":false,"usgs":true,"family":"Sanders","given":"N.J.","email":"","affiliations":[],"preferred":false,"id":431548,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70031467,"text":"70031467 - 2007 - Random forests for classification in ecology","interactions":[],"lastModifiedDate":"2012-03-12T17:21:12","indexId":"70031467","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Random forests for classification in ecology","docAbstract":"Classification procedures are some of the most widely used statistical methods in ecology. Random forests (RF) is a new and powerful statistical classifier that is well established in other disciplines but is relatively unknown in ecology. Advantages of RF compared to other statistical classifiers include (1) very high classification accuracy; (2) a novel method of determining variable importance; (3) ability to model complex interactions among predictor variables; (4) flexibility to perform several types of statistical data analysis, including regression, classification, survival analysis, and unsupervised learning; and (5) an algorithm for imputing missing values. We compared the accuracies of RF and four other commonly used statistical classifiers using data on invasive plant species presence in Lava Beds National Monument, California, USA, rare lichen species presence in the Pacific Northwest, USA, and nest sites for cavity nesting birds in the Uinta Mountains, Utah, USA. We observed high classification accuracy in all applications as measured by cross-validation and, in the case of the lichen data, by independent test data, when comparing RF to other common classification methods. We also observed that the variables that RF identified as most important for classifying invasive plant species coincided with expectations based on the literature. ?? 2007 by the Ecological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1890/07-0539.1","issn":"00129658","usgsCitation":"Cutler, D., Edwards, T., Beard, K., Cutler, A., Hess, K., Gibson, J., and Lawler, J., 2007, Random forests for classification in ecology: Ecology, v. 88, no. 11, p. 2783-2792, https://doi.org/10.1890/07-0539.1.","startPage":"2783","endPage":"2792","numberOfPages":"10","costCenters":[],"links":[{"id":212176,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/07-0539.1"},{"id":239626,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a9494e4b0c8380cd814c4","contributors":{"authors":[{"text":"Cutler, D.R.","contributorId":89684,"corporation":false,"usgs":true,"family":"Cutler","given":"D.R.","email":"","affiliations":[],"preferred":false,"id":431629,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Edwards, T.C. Jr. 0000-0002-0773-0909","orcid":"https://orcid.org/0000-0002-0773-0909","contributorId":76486,"corporation":false,"usgs":true,"family":"Edwards","given":"T.C.","suffix":"Jr.","affiliations":[],"preferred":false,"id":431628,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Beard, K.H.","contributorId":33531,"corporation":false,"usgs":true,"family":"Beard","given":"K.H.","affiliations":[],"preferred":false,"id":431625,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cutler, A.","contributorId":50354,"corporation":false,"usgs":true,"family":"Cutler","given":"A.","email":"","affiliations":[],"preferred":false,"id":431626,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hess, K.T.","contributorId":31204,"corporation":false,"usgs":true,"family":"Hess","given":"K.T.","email":"","affiliations":[],"preferred":false,"id":431624,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Gibson, J.","contributorId":52399,"corporation":false,"usgs":true,"family":"Gibson","given":"J.","affiliations":[],"preferred":false,"id":431627,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Lawler, J.J.","contributorId":8641,"corporation":false,"usgs":true,"family":"Lawler","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":431623,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70031509,"text":"70031509 - 2007 - Responses to riparian restoration in the Spring Creek watershed, Central Pennsylvania","interactions":[],"lastModifiedDate":"2012-03-12T17:21:11","indexId":"70031509","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3271,"text":"Restoration Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Responses to riparian restoration in the Spring Creek watershed, Central Pennsylvania","docAbstract":"Riparian treatments, consisting of 3- to 4-m buffer strips, stream bank stabilization, and rock-lined stream crossings, were installed in two streams with livestock grazing to reduce sediment loading and stream bank erosion. Cedar Run and Slab Cabin Run, the treatment streams, and Spring Creek, an adjacent reference stream without riparian grazing, were monitored prior to (1991-1992) and 3-5 years after (2001-2003) riparian buffer installation to assess channel morphology, stream substrate composition, suspended sediments, and macroinvertebrate communities. Few changes were found in channel widths and depths, but channel-structuring flow events were rare in the drought period after restoration. Stream bank vegetation increased from 50% or less to 100% in nearly all formerly grazed riparian buffers. The proportion of fine sediments in stream substrates decreased in Cedar Run but not in Slab Cabin Run. After riparian treatments, suspended sediments during base flow and storm flow decreased 47-87% in both streams. Macroinvertebrate diversity did not improve after restoration in either treated stream. Relative to Spring Creek, macroinvertebrate densities increased in both treated streams by the end of the posttreatment sampling period. Despite drought conditions that may have altered physical and biological effects of riparian treatments, goals of the riparian restoration to minimize erosion and sedimentation were met. A relatively narrow grass buffer along 2.4 km of each stream was effective in improving water quality, stream substrates, and some biological metrics. ?? 2007 Society for Ecological Restoration International.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Restoration Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1526-100X.2007.00285.x","issn":"10612971","usgsCitation":"Carline, R., and Walsh, M., 2007, Responses to riparian restoration in the Spring Creek watershed, Central Pennsylvania: Restoration Ecology, v. 15, no. 4, p. 731-742, https://doi.org/10.1111/j.1526-100X.2007.00285.x.","startPage":"731","endPage":"742","numberOfPages":"12","costCenters":[],"links":[{"id":212296,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1526-100X.2007.00285.x"},{"id":239760,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-12-10","publicationStatus":"PW","scienceBaseUri":"505aaab8e4b0c8380cd864bc","contributors":{"authors":[{"text":"Carline, R.F.","contributorId":107444,"corporation":false,"usgs":true,"family":"Carline","given":"R.F.","affiliations":[],"preferred":false,"id":431856,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Walsh, M.C.","contributorId":78155,"corporation":false,"usgs":true,"family":"Walsh","given":"M.C.","email":"","affiliations":[],"preferred":false,"id":431855,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70031526,"text":"70031526 - 2007 - A simple pore water hydrogen diffusion syringe sampler","interactions":[],"lastModifiedDate":"2018-10-16T09:32:52","indexId":"70031526","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"A simple pore water hydrogen diffusion syringe sampler","docAbstract":"

Molecular hydrogen (H2) is an important intermediate product and electron donor in microbial metabolism. Concentrations of dissolved H 2 are often diagnostic of the predominant terminal electron-accepting processes in ground water systems or aquatic sediments. H2 concentrations are routinely measured in ground water monitoring wells but are rarely measured in saturated aquatic sediments due to a lack of simple and practical sampling methods. This report describes the design and development (including laboratory and field testing) of a simple, syringe-based H 2 sampler in (1) saturated, riparian sediments, (2) surface water bed sediments, and (3) packed intervals of a fractured bedrock borehole that are inaccessible by standard pumped methods.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1745-6584.2007.00362.x","issn":"0017467X","usgsCitation":"Vroblesky, D., Chapelle, F.H., and Bradley, P.M., 2007, A simple pore water hydrogen diffusion syringe sampler: Ground Water, v. 45, no. 6, p. 798-802, https://doi.org/10.1111/j.1745-6584.2007.00362.x.","productDescription":"5 p.","startPage":"798","endPage":"802","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240033,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212536,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2007.00362.x"}],"volume":"45","issue":"6","noUsgsAuthors":false,"publicationDate":"2007-08-09","publicationStatus":"PW","scienceBaseUri":"5059e591e4b0c8380cd46e2b","contributors":{"authors":[{"text":"Vroblesky, Don vroblesk@usgs.gov","contributorId":207411,"corporation":false,"usgs":true,"family":"Vroblesky","given":"Don","email":"vroblesk@usgs.gov","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":431958,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"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":431959,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bradley, Paul M. 0000-0001-7522-8606 pbradley@usgs.gov","orcid":"https://orcid.org/0000-0001-7522-8606","contributorId":361,"corporation":false,"usgs":true,"family":"Bradley","given":"Paul","email":"pbradley@usgs.gov","middleInitial":"M.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":431957,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70031530,"text":"70031530 - 2007 - Remote sensing-based predictors improve distribution models of rare, early successional and broadleaf tree species in Utah","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70031530","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2163,"text":"Journal of Applied Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Remote sensing-based predictors improve distribution models of rare, early successional and broadleaf tree species in Utah","docAbstract":"1. Compared to bioclimatic variables, remote sensing predictors are rarely used for predictive species modelling. When used, the predictors represent typically habitat classifications or filters rather than gradual spectral, surface or biophysical properties. Consequently, the full potential of remotely sensed predictors for modelling the spatial distribution of species remains unexplored. Here we analysed the partial contributions of remotely sensed and climatic predictor sets to explain and predict the distribution of 19 tree species in Utah. We also tested how these partial contributions were related to characteristics such as successional types or species traits. 2. We developed two spatial predictor sets of remotely sensed and topo-climatic variables to explain the distribution of tree species. We used variation partitioning techniques applied to generalized linear models to explore the combined and partial predictive powers of the two predictor sets. Non-parametric tests were used to explore the relationships between the partial model contributions of both predictor sets and species characteristics. 3. More than 60% of the variation explained by the models represented contributions by one of the two partial predictor sets alone, with topo-climatic variables outperforming the remotely sensed predictors. However, the partial models derived from only remotely sensed predictors still provided high model accuracies, indicating a significant correlation between climate and remote sensing variables. The overall accuracy of the models was high, but small sample sizes had a strong effect on cross-validated accuracies for rare species. 4. Models of early successional and broadleaf species benefited significantly more from adding remotely sensed predictors than did late seral and needleleaf species. The core-satellite species types differed significantly with respect to overall model accuracies. Models of satellite and urban species, both with low prevalence, benefited more from use of remotely sensed predictors than did the more frequent core species. 5. Synthesis and applications. If carefully prepared, remotely sensed variables are useful additional predictors for the spatial distribution of trees. Major improvements resulted for deciduous, early successional, satellite and rare species. The ability to improve model accuracy for species having markedly different life history strategies is a crucial step for assessing effects of global change. ?? 2007 The Authors.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Applied Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1365-2664.2007.01348.x","issn":"00218901","usgsCitation":"Zimmermann, N., Edwards, T., Moisen, G.G., Frescino, T., and Blackard, J., 2007, Remote sensing-based predictors improve distribution models of rare, early successional and broadleaf tree species in Utah: Journal of Applied Ecology, v. 44, no. 5, p. 1057-1067, https://doi.org/10.1111/j.1365-2664.2007.01348.x.","startPage":"1057","endPage":"1067","numberOfPages":"11","costCenters":[],"links":[{"id":487622,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1365-2664.2007.01348.x","text":"Publisher Index Page"},{"id":212568,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-2664.2007.01348.x"},{"id":240071,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"44","issue":"5","noUsgsAuthors":false,"publicationDate":"2007-07-23","publicationStatus":"PW","scienceBaseUri":"505aa715e4b0c8380cd851f4","contributors":{"authors":[{"text":"Zimmermann, N.E.","contributorId":24547,"corporation":false,"usgs":true,"family":"Zimmermann","given":"N.E.","email":"","affiliations":[],"preferred":false,"id":431971,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Edwards, T.C. Jr. 0000-0002-0773-0909","orcid":"https://orcid.org/0000-0002-0773-0909","contributorId":76486,"corporation":false,"usgs":true,"family":"Edwards","given":"T.C.","suffix":"Jr.","affiliations":[],"preferred":false,"id":431972,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Moisen, Gretchen G.","contributorId":15781,"corporation":false,"usgs":false,"family":"Moisen","given":"Gretchen","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":431970,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Frescino, T.S.","contributorId":94485,"corporation":false,"usgs":true,"family":"Frescino","given":"T.S.","email":"","affiliations":[],"preferred":false,"id":431973,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Blackard, J.A.","contributorId":103060,"corporation":false,"usgs":true,"family":"Blackard","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":431974,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70031570,"text":"70031570 - 2007 - Geoarchaeology of stratified paleoindian deposits at the Big Eddy site, Southwest Missouri, U.S.A","interactions":[],"lastModifiedDate":"2012-03-12T17:21:12","indexId":"70031570","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1749,"text":"Geoarchaeology","active":true,"publicationSubtype":{"id":10}},"title":"Geoarchaeology of stratified paleoindian deposits at the Big Eddy site, Southwest Missouri, U.S.A","docAbstract":"The Big Eddy site (23CE426) in the Sac River valley of southwest Missouri is a rare recorded example of distinctly stratified Early through Late Paleoindian cultural deposits. Early point types recovered from the site include Gainey, Sedgwick, Dalton (fluted and unfluted), San Patrice, Wilson, and Packard. The Paleoindian record at Big Eddy represents only a fraction of the site's prehistoric cultural record; stratified cultural deposits in alluvium above the Paleoindian components span the entire known prehistoric sequence, and terminal Pleistocene alluvium may contain pre-Early Paleoindian cultural deposits. This study focused on the paleogeomorphic setting, stratigraphy, depositional environments, pedology, geochronology, and history of landscape evolution of the late Pleistocene and early Holocene alluvium at the site. The Paleoindian sequence is associated with a complex buried soil 2.85 m below the modern surface (T1a) of the first terrace of the Sac River valley in the site vicinity. This soil formed at the top of the early submember of the Rodgers Shelter Member (underlying the T1c paleogeomorphic surface) and contains at least 70 cm of stratified Paleoindian cultural deposits, all in floodplain and upper point-bar facies. A suite of 36 radiocarbon ages indicates that the alluvium hosting the Paleoindian sequence aggraded between ca. 13,250 and 11,870 cal yr B.P. (11,380 and 10,180 14C yr B.P.). Underlying deposits accumulated between ca. 15,300 and 13,250 cal yr B.P. (12,950 and 11,380 14C yr B.P.). By ca. 11,250 cal yr B.P. (9,840 14C yr B.P.) the T1c paleogeomorphic surface was buried by the earliest increment of a thick sequence of overbank sheetflood facies, ultimately resulting in deep burial and preservation of the Paleoindian record. The landform-sediment assemblage that hosts the Paleoindian and possibly earlier cultural deposits at Big Eddy is both widespread and well preserved in the lower Sac River valley. Moreover, the terminal Pleistocene and early Holocene depositional environments were favorable for the preservation of the archaeological record. ?? 2007 Wiley Periodicals, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geoarchaeology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/gea.20200","issn":"08836353","usgsCitation":"Hajic, E., Mandel, R., Ray, J., and Lopinot, N., 2007, Geoarchaeology of stratified paleoindian deposits at the Big Eddy site, Southwest Missouri, U.S.A: Geoarchaeology, v. 22, no. 8, p. 891-934, https://doi.org/10.1002/gea.20200.","startPage":"891","endPage":"934","numberOfPages":"44","costCenters":[],"links":[{"id":212211,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/gea.20200"},{"id":239664,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"22","issue":"8","noUsgsAuthors":false,"publicationDate":"2007-11-07","publicationStatus":"PW","scienceBaseUri":"505a1599e4b0c8380cd54ebb","contributors":{"authors":[{"text":"Hajic, E.R.","contributorId":64026,"corporation":false,"usgs":true,"family":"Hajic","given":"E.R.","email":"","affiliations":[],"preferred":false,"id":432171,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mandel, R.D.","contributorId":58000,"corporation":false,"usgs":true,"family":"Mandel","given":"R.D.","email":"","affiliations":[],"preferred":false,"id":432170,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ray, J.H.","contributorId":42038,"corporation":false,"usgs":true,"family":"Ray","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":432169,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lopinot, N.H.","contributorId":31577,"corporation":false,"usgs":true,"family":"Lopinot","given":"N.H.","email":"","affiliations":[],"preferred":false,"id":432168,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70031574,"text":"70031574 - 2007 - Risk assessment of water quality in three North Carolina, USA, streams supporting federally endangered freshwater mussels (Unionidae)","interactions":[],"lastModifiedDate":"2017-05-22T16:12:47","indexId":"70031574","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Risk assessment of water quality in three North Carolina, USA, streams supporting federally endangered freshwater mussels (Unionidae)","docAbstract":"

Water quality data were collected from three drainages supporting the endangered Carolina heelsplitter (Lasmigona decorata) and dwarf wedgemussel (Alasmidonta heterodon) to determine the potential for impaired water quality to limit the recovery of these freshwater mussels in North Carolina, USA. Total recoverable copper, total residual chlorine, and total ammonia nitrogen were measured every two months for approximately a year at sites bracketing wastewater sources and mussel habitat. These data and state monitoring datasets were compared with ecological screening values, including estimates of chemical concentrations likely to be protective of mussels, and federal ambient water quality criteria to assess site risks following a hazard quotient approach. In one drainage, the site-specific ammonia ecological screening value for acute exposures was exceeded in 6% of the samples, and 15% of samples exceeded the chronic ecological screening value; however, ammonia concentrations were generally below levels of concern in other drainages. In all drainages, copper concentrations were higher than ecological screening values most frequently (exceeding the ecological screening values for acute exposures in 65-94% of the samples). Chlorine concentrations exceeding the acute water quality criterion were observed in 14 and 35% of samples in two of three drainages. The ecological screening values were exceeded most frequently in Goose Creek and the Upper Tar River drainages; concentrations rarely exceeded ecological screening values in the Swift Creek drainage except for copper. The site-specific risk assessment approach provides valuable information (including site-specific risk estimates and ecological screening values for protection) that can be applied through regulatory and nonregulatory means to improve water quality for mussels where risks are indicated and pollutant threats persist. ?? 2007 SETAC.

","language":"English","publisher":"Wiley","doi":"10.1897/06-561R.1","issn":"07307268","usgsCitation":"Ward, S., Augspurger, T., Dwyer, F., Kane, C., and Ingersoll, C., 2007, Risk assessment of water quality in three North Carolina, USA, streams supporting federally endangered freshwater mussels (Unionidae): Environmental Toxicology and Chemistry, v. 26, no. 10, p. 2075-2085, https://doi.org/10.1897/06-561R.1.","productDescription":"11 p.","startPage":"2075","endPage":"2085","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":239732,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212270,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1897/06-561R.1"}],"country":"United States","state":"North Carolina","otherGeospatial":"Goose Creek, Swift Creek, Tar River basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -80.75225830078125,\n 35.25795517382968\n ],\n [\n -80.4583740234375,\n 35.19625600786368\n ],\n [\n -80.782470703125,\n 34.93885938523973\n ],\n [\n -80.93215942382812,\n 35.108674964507586\n ],\n [\n -80.75225830078125,\n 35.25795517382968\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -78.82278442382812,\n 36.53722603815998\n ],\n [\n -78.36135864257812,\n 36.542742833547834\n ],\n [\n -78.44100952148438,\n 36.33725319397006\n ],\n [\n -78.52890014648436,\n 36.1822249804225\n ],\n [\n -79.00405883789061,\n 36.18333341549503\n ],\n [\n -78.98757934570312,\n 36.54163950596125\n ],\n [\n -78.82278442382812,\n 36.53722603815998\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -77.33551025390624,\n 35.41031879581839\n ],\n [\n -77.25414276123047,\n 35.36917533446543\n ],\n [\n -77.20882415771484,\n 35.36721559854914\n ],\n [\n -77.15663909912108,\n 35.31512519050729\n ],\n [\n -77.09449768066406,\n 35.2172950850141\n ],\n [\n -77.07630157470703,\n 35.19569489118943\n ],\n [\n -77.09587097167969,\n 35.19204753833417\n ],\n [\n -77.16659545898438,\n 35.28009933253644\n ],\n [\n -77.2184371948242,\n 35.33977430038646\n ],\n [\n -77.27405548095703,\n 35.35041591050917\n ],\n [\n -77.34752655029297,\n 35.3960469114653\n ],\n [\n -77.35164642333983,\n 35.41087842606998\n ],\n [\n -77.33551025390624,\n 35.41031879581839\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"26","issue":"10","noUsgsAuthors":false,"publicationDate":"2007-10-01","publicationStatus":"PW","scienceBaseUri":"505aad90e4b0c8380cd86f14","contributors":{"authors":[{"text":"Ward, S.","contributorId":98945,"corporation":false,"usgs":true,"family":"Ward","given":"S.","affiliations":[],"preferred":false,"id":432184,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Augspurger, T.","contributorId":81844,"corporation":false,"usgs":false,"family":"Augspurger","given":"T.","email":"","affiliations":[],"preferred":false,"id":432183,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dwyer, F.J.","contributorId":107818,"corporation":false,"usgs":true,"family":"Dwyer","given":"F.J.","email":"","affiliations":[],"preferred":false,"id":432186,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kane, C.","contributorId":101083,"corporation":false,"usgs":true,"family":"Kane","given":"C.","email":"","affiliations":[],"preferred":false,"id":432185,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ingersoll, C.G. 0000-0003-4531-5949","orcid":"https://orcid.org/0000-0003-4531-5949","contributorId":56338,"corporation":false,"usgs":true,"family":"Ingersoll","given":"C.G.","affiliations":[],"preferred":false,"id":432182,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70031586,"text":"70031586 - 2007 - High rates of energy expenditure and water flux in free-ranging Point Reyes mountain beavers Aplodontia rufa phaea","interactions":[],"lastModifiedDate":"2012-03-12T17:21:11","indexId":"70031586","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3075,"text":"Physiological and Biochemical Zoology","active":true,"publicationSubtype":{"id":10}},"title":"High rates of energy expenditure and water flux in free-ranging Point Reyes mountain beavers Aplodontia rufa phaea","docAbstract":"We measured water flux and energy expenditure in free-ranging Point Reyes mountain beavers Aplodontia rufa phaea by using the doubly labeled water method. Previous laboratory investigations have suggested weak urinary concentrating ability, high rates of water flux, and low basal metabolic rates in this species. However, free-ranging measurements from hygric mammals are rare, and it is not known how these features interact in the environment. Rates of water flux (210 ?? 32 mL d-1) and field metabolic rates (1,488 ?? 486 kJ d-1) were 159% and 265%, respectively, of values predicted by allometric equations for similar-sized herbivores. Mountain beavers can likely meet their water needs through metabolic water production and preformed water in food and thus remain in water balance without access to free water. Arginine-vasopressin levels were strongly correlated with rates of water flux and plasma urea : creatinine ratios, suggesting an important role for this hormone in regulating urinary water loss in mountain beavers. High field metabolic rates may result from cool burrow temperatures that are well below lower critical temperatures measured in previous laboratory studies and suggest that thermoregulation costs may strongly influence field energetics and water flux in semifossorial mammals. ?? 2007 by The University of Chicago. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Physiological and Biochemical Zoology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1086/521204","issn":"15222152","usgsCitation":"Crocker, D., Kofahl, N., Fellers, G., Gates, N., and Houser, D., 2007, High rates of energy expenditure and water flux in free-ranging Point Reyes mountain beavers Aplodontia rufa phaea: Physiological and Biochemical Zoology, v. 80, no. 6, p. 635-642, https://doi.org/10.1086/521204.","startPage":"635","endPage":"642","numberOfPages":"8","costCenters":[],"links":[{"id":477228,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://hdl.handle.net/10211.3/123164","text":"External Repository"},{"id":239935,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212446,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1086/521204"}],"volume":"80","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a30c6e4b0c8380cd5d936","contributors":{"authors":[{"text":"Crocker, D.E.","contributorId":103084,"corporation":false,"usgs":true,"family":"Crocker","given":"D.E.","email":"","affiliations":[],"preferred":false,"id":432229,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kofahl, N.","contributorId":9068,"corporation":false,"usgs":true,"family":"Kofahl","given":"N.","email":"","affiliations":[],"preferred":false,"id":432226,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fellers, G.D.","contributorId":33922,"corporation":false,"usgs":true,"family":"Fellers","given":"G.D.","email":"","affiliations":[],"preferred":false,"id":432227,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gates, N.B.","contributorId":104708,"corporation":false,"usgs":true,"family":"Gates","given":"N.B.","email":"","affiliations":[],"preferred":false,"id":432230,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Houser, D.S.","contributorId":45117,"corporation":false,"usgs":true,"family":"Houser","given":"D.S.","email":"","affiliations":[],"preferred":false,"id":432228,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70031594,"text":"70031594 - 2007 - Population density, biomass, and age-class structure of the invasive clam Corbicula fluminea in rivers of the lower San Joaquin River watershed, California","interactions":[],"lastModifiedDate":"2023-07-05T12:17:18.464508","indexId":"70031594","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3746,"text":"Western North American Naturalist","onlineIssn":"1944-8341","printIssn":"1527-0904","active":true,"publicationSubtype":{"id":10}},"title":"Population density, biomass, and age-class structure of the invasive clam Corbicula fluminea in rivers of the lower San Joaquin River watershed, California","docAbstract":"

Corbicula fluminea is well known as an invasive filter-feeding freshwater bivalve with a variety of effects on ecosystem processes. However, C. fluminea has been relatively unstudied in the rivers of the western United States. In June 2003, we sampled C. fluminea at 16 sites in the San Joaquin River watershed of California, which was invaded by C. fluminea in the 1940s. Corbicula fluminea was common in 2 tributaries to the San Joaquin River, reaching densities of 200 clams · m−2, but was rare in the San Joaquin River. Biomass followed a similar pattern. Clams of the same age were shorter in the San Joaquin River than in the tributaries. Distribution of clams was different in the 2 tributaries, but the causes of the difference are unknown. The low density and biomass of clams in the San Joaquin River was likely due to stressful habitat or to water quality, because food was abundant. The success of C. fluminea invasions and subsequent effects on trophic processes likely depends on multiple factors. As C. fluminea continues to expand its range around the world, questions regarding invasion success and effects on ecosystems will become important in a wide array of environmental settings.

","language":"English","publisher":"BioOne","doi":"10.3398/1527-0904(2007)67[572:PDBAAS]2.0.CO;2","issn":"15270904","usgsCitation":"Brown, L.R., Thompson, J.K., Higgins, K., and Lucas, L.V., 2007, Population density, biomass, and age-class structure of the invasive clam Corbicula fluminea in rivers of the lower San Joaquin River watershed, California: Western North American Naturalist, v. 67, no. 4, p. 572-586, https://doi.org/10.3398/1527-0904(2007)67[572:PDBAAS]2.0.CO;2.","productDescription":"15 p.","startPage":"572","endPage":"586","numberOfPages":"15","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":489791,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://scholarsarchive.byu.edu/wnan/vol67/iss4/10","text":"External Repository"},{"id":240074,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Joaquin River Watershed","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -122.41195439667275,\n 38.415598404027605\n ],\n [\n -122.41195439667275,\n 37.69791363010357\n ],\n [\n -121.25888467133896,\n 37.69791363010357\n ],\n [\n -121.25888467133896,\n 38.415598404027605\n ],\n [\n -122.41195439667275,\n 38.415598404027605\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"67","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7d3be4b0c8380cd79e1b","contributors":{"authors":[{"text":"Brown, Larry R. 0000-0001-6702-4531 lrbrown@usgs.gov","orcid":"https://orcid.org/0000-0001-6702-4531","contributorId":1717,"corporation":false,"usgs":true,"family":"Brown","given":"Larry","email":"lrbrown@usgs.gov","middleInitial":"R.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":432254,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thompson, Janet K. 0000-0002-1528-8452 jthompso@usgs.gov","orcid":"https://orcid.org/0000-0002-1528-8452","contributorId":1009,"corporation":false,"usgs":true,"family":"Thompson","given":"Janet","email":"jthompso@usgs.gov","middleInitial":"K.","affiliations":[{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":432255,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Higgins, K.","contributorId":32734,"corporation":false,"usgs":true,"family":"Higgins","given":"K.","affiliations":[],"preferred":false,"id":432252,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lucas, Lisa V.","contributorId":80992,"corporation":false,"usgs":true,"family":"Lucas","given":"Lisa","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":432253,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70031656,"text":"70031656 - 2007 - Sandy signs of a tsunami's onshore depth and speed","interactions":[],"lastModifiedDate":"2014-08-27T11:54:22","indexId":"70031656","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"Sandy signs of a tsunami's onshore depth and speed","docAbstract":"

Tsunamis rank among the most devastating and unpredictable natural hazards to affect coastal areas. Just 3 years ago, in December 2004, the Indian Ocean tsunami caused more than 225,000 deaths. Like many extreme events, however, destructive tsunamis strike rarely enough that written records span too little time to quantify tsunami hazard and risk. Tsunami deposits preserved in the geologic record have been used to extend the record of tsunami occurrence but not the magnitude of past events. To quantify tsunami hazard further, we asked the following question: Can ancient deposits also provide guidance on the expectable water depths and speeds for future tsunamis?

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Eos, Transactions American Geophysical Union","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Wiley","doi":"10.1029/2007EO520001","issn":"00963941","usgsCitation":"Huntington, K., Bourgeois, J., Gelfenbaum, G., Lynett, P., Jaffe, B., Yeh, H., and Weiss, R., 2007, Sandy signs of a tsunami's onshore depth and speed: Eos, Transactions, American Geophysical Union, v. 88, no. 52, p. 577-578, https://doi.org/10.1029/2007EO520001.","productDescription":"4 p.","startPage":"577","endPage":"578","numberOfPages":"4","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":476945,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2007eo520001","text":"Publisher Index Page"},{"id":239938,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212448,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2007EO520001"}],"volume":"88","issue":"52","noUsgsAuthors":false,"publicationDate":"2008-01-04","publicationStatus":"PW","scienceBaseUri":"505b86afe4b08c986b316093","contributors":{"authors":[{"text":"Huntington, K.","contributorId":66605,"corporation":false,"usgs":true,"family":"Huntington","given":"K.","email":"","affiliations":[],"preferred":false,"id":432537,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bourgeois, J.","contributorId":65771,"corporation":false,"usgs":true,"family":"Bourgeois","given":"J.","email":"","affiliations":[],"preferred":false,"id":432536,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gelfenbaum, G.","contributorId":72429,"corporation":false,"usgs":true,"family":"Gelfenbaum","given":"G.","email":"","affiliations":[],"preferred":false,"id":432538,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lynett, P.","contributorId":47981,"corporation":false,"usgs":true,"family":"Lynett","given":"P.","email":"","affiliations":[],"preferred":false,"id":432535,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Jaffe, B.","contributorId":78517,"corporation":false,"usgs":true,"family":"Jaffe","given":"B.","affiliations":[],"preferred":false,"id":432539,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Yeh, H.","contributorId":82621,"corporation":false,"usgs":true,"family":"Yeh","given":"H.","email":"","affiliations":[],"preferred":false,"id":432540,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Weiss, R.","contributorId":13902,"corporation":false,"usgs":true,"family":"Weiss","given":"R.","email":"","affiliations":[],"preferred":false,"id":432534,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70031665,"text":"70031665 - 2007 - Population inertia and its sensitivity to changes in vital rates and population structure","interactions":[],"lastModifiedDate":"2017-12-07T08:45:44","indexId":"70031665","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Population inertia and its sensitivity to changes in vital rates and population structure","docAbstract":"Because the (st)age structure of a population may rarely be stable, studies of transient population dynamics and population momentum are becoming ever more popular. Yet, studies of \"population momentum\" are restricted in the sense that they describe the inertia of population size resulting from a demographic transition to the stationary population growth rate. Although rarely mentioned, inertia in population size is a general phenomenon and can be produced by any demographic transition or perturbation. Because population size is of central importance in demography, conservation, and management, formulas relating the sensitivity of population inertia to changes in underlying vital rates and population structure could provide much-needed insight into the dynamics of populations with unstable (st)age structure. Here, we derive such formulas, which are readily computable, and provide examples of their potential use in studies of life history and applied arenas of population study. ?? 2007 by the Ecological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1890/06-1801.1","issn":"00129658","usgsCitation":"Koons, D.N., Holmes, R.R., and Grand, J.B., 2007, Population inertia and its sensitivity to changes in vital rates and population structure: Ecology, v. 88, no. 11, p. 2857-2867, https://doi.org/10.1890/06-1801.1.","startPage":"2857","endPage":"2867","numberOfPages":"11","costCenters":[],"links":[{"id":240078,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212575,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/06-1801.1"}],"volume":"88","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7d7be4b0c8380cd79f8e","contributors":{"authors":[{"text":"Koons, David N.","contributorId":28137,"corporation":false,"usgs":false,"family":"Koons","given":"David","email":"","middleInitial":"N.","affiliations":[{"id":6621,"text":"Colorado State University","active":true,"usgs":false}],"preferred":false,"id":432581,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Holmes, Randall R.","contributorId":201221,"corporation":false,"usgs":false,"family":"Holmes","given":"Randall","email":"","middleInitial":"R.","affiliations":[{"id":13360,"text":"Auburn University","active":true,"usgs":false}],"preferred":false,"id":432580,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Grand, J. Barry 0000-0002-3576-4567 barry_grand@usgs.gov","orcid":"https://orcid.org/0000-0002-3576-4567","contributorId":579,"corporation":false,"usgs":true,"family":"Grand","given":"J.","email":"barry_grand@usgs.gov","middleInitial":"Barry","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":true,"id":432579,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70031666,"text":"70031666 - 2007 - Response of bird species densities to habitat structure and fire history along a Midwestern open-forest gradient","interactions":[],"lastModifiedDate":"2016-04-28T13:44:57","indexId":"70031666","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1318,"text":"Condor","active":true,"publicationSubtype":{"id":10}},"title":"Response of bird species densities to habitat structure and fire history along a Midwestern open-forest gradient","docAbstract":"

Oak savannas were historically common but are currently rare in the Midwestern United States. We assessed possible associations of bird species with savannas and other threatened habitats in the region by relating fire frequency and vegetation characteristics to seasonal densities of 72 bird species distributed across an open-forest gradient in northwestern Indiana. About one-third of the species did not exhibit statistically significant relationships with any combination of seven vegetation characteristics that included vegetation cover in five vertical strata, dead tree density, and tree height. For 40% of the remaining species, models best predicting species density incorporated tree density. Therefore, management based solely on manipulating tree density may not be an adequate strategy for managing bird populations along this open-forest gradient. Few species exhibited sharp peaks in predicted density under habitat conditions expected in restored savannas, suggesting that few savanna specialists occur among Midwestern bird species. When fire frequency, measured over fifteen years, was added to vegetation characteristics as a predictor of species density, it was incorporated into models for about one-quarter of species, suggesting that fire may modify habitat characteristics in ways that are important for birds but not captured by the structural habitat variables measured. Among those species, similar numbers had peaks in predicted density at low, intermediate, or high fire frequency. For species suggested by previous studies to have a preference for oak savannas along the open-forest gradient, estimated density was maximized at an average fire return interval of about one fire every three years. ?? The Cooper Ornithological Society 2007.

","language":"English","publisher":"Cooper Ornithological Society","doi":"10.1650/0010-5422(2007)109[734:ROBSDT]2.0.CO;2","issn":"00105422","usgsCitation":"Grundel, R., and Pavlovic, N., 2007, Response of bird species densities to habitat structure and fire history along a Midwestern open-forest gradient: Condor, v. 109, no. 4, p. 734-749, https://doi.org/10.1650/0010-5422(2007)109[734:ROBSDT]2.0.CO;2.","productDescription":"16 p.","startPage":"734","endPage":"749","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":476963,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://zenodo.org/record/1236383","text":"Publisher Index Page"},{"id":240079,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212576,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1650/0010-5422(2007)109[734:ROBSDT]2.0.CO;2"}],"volume":"109","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aaa37e4b0c8380cd861ed","contributors":{"authors":[{"text":"Grundel, R.","contributorId":37110,"corporation":false,"usgs":true,"family":"Grundel","given":"R.","affiliations":[],"preferred":false,"id":432582,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pavlovic, N.B.","contributorId":105076,"corporation":false,"usgs":true,"family":"Pavlovic","given":"N.B.","email":"","affiliations":[],"preferred":false,"id":432583,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70031684,"text":"70031684 - 2007 - Frequent transmission of immunodeficiency viruses among bobcats and pumas","interactions":[],"lastModifiedDate":"2012-03-12T17:21:12","indexId":"70031684","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2497,"text":"Journal of Virology","active":true,"publicationSubtype":{"id":10}},"title":"Frequent transmission of immunodeficiency viruses among bobcats and pumas","docAbstract":"With the exception of human immunodeficiency virus (HIV), which emerged in humans after cross-species transmissions of simian immunodeficiency viruses from nonhuman primates, immunodeficiency viruses of the family Lentiviridae represent species-specific viruses that rarely cross species barriers to infect new hosts. Among the Felidae, numerous immunodeficiency-like lentiviruses have been documented, but only a few cross-species transmissions have been recorded, and these have not been perpetuated in the recipient species. Lentivirus seroprevalence was determined for 79 bobcats (Lynx rufus) and 31 pumas (Puma concolor) from well-defined populations in Southern California. Partial genomic sequences were subsequently obtained from 18 and 12 seropositive bobcats and pumas, respectively. Genotypes were analyzed for phylogenic relatedness and genotypic composition among the study set and archived feline lentivirus sequences. This investigation of feline immunodeficiency virus infection in bobcats and pumas of Southern California provides evidence that cross-species infection has occurred frequently among these animals. The data suggest that transmission has occurred in multiple locations and are most consistent with the spread of the virus from bobcats to pumas. Although the ultimate causes remain unknown, these transmission events may occur as a result of puma predation on bobcats, a situation similar to that which fostered transmission of HIV to humans, and likely represent the emergence of a lentivirus with relaxed barriers to cross-species transmission. This unusual observation provides a valuable opportunity to evaluate the ecological, behavioral, and molecular conditions that favor repeated transmissions and persistence of lentivirus between species. Copyright ?? 2007, American Society for Microbiology. All Rights Reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Virology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1128/JVI.00997-07","issn":"0022538X","usgsCitation":"Franklin, S., Troyer, J., TerWee, J., Lyren, L., Boyce, W., Riley, S., Roelke, M., Crooks, K., and VandeWoude, S., 2007, Frequent transmission of immunodeficiency viruses among bobcats and pumas: Journal of Virology, v. 81, no. 20, p. 10961-10969, https://doi.org/10.1128/JVI.00997-07.","startPage":"10961","endPage":"10969","numberOfPages":"9","costCenters":[],"links":[{"id":477142,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://www.ncbi.nlm.nih.gov/pmc/articles/2045550","text":"External Repository"},{"id":212336,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1128/JVI.00997-07"},{"id":239804,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"81","issue":"20","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a13d8e4b0c8380cd547df","contributors":{"authors":[{"text":"Franklin, S.P.","contributorId":87368,"corporation":false,"usgs":true,"family":"Franklin","given":"S.P.","email":"","affiliations":[],"preferred":false,"id":432684,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Troyer, J.L.","contributorId":10224,"corporation":false,"usgs":true,"family":"Troyer","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":432676,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"TerWee, J.A.","contributorId":76133,"corporation":false,"usgs":true,"family":"TerWee","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":432681,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lyren, L.M.","contributorId":11983,"corporation":false,"usgs":true,"family":"Lyren","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":432677,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Boyce, W.M.","contributorId":12266,"corporation":false,"usgs":true,"family":"Boyce","given":"W.M.","email":"","affiliations":[],"preferred":false,"id":432678,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Riley, S.P.D.","contributorId":86157,"corporation":false,"usgs":true,"family":"Riley","given":"S.P.D.","email":"","affiliations":[],"preferred":false,"id":432683,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Roelke, M.E.","contributorId":48931,"corporation":false,"usgs":true,"family":"Roelke","given":"M.E.","email":"","affiliations":[],"preferred":false,"id":432679,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Crooks, K.R.","contributorId":81679,"corporation":false,"usgs":true,"family":"Crooks","given":"K.R.","email":"","affiliations":[],"preferred":false,"id":432682,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"VandeWoude, S.","contributorId":74953,"corporation":false,"usgs":true,"family":"VandeWoude","given":"S.","affiliations":[],"preferred":false,"id":432680,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":70035411,"text":"70035411 - 2007 - Origin and emplacement of impactites in the Chesapeake Bay impact structure, Virginia, USA","interactions":[],"lastModifiedDate":"2020-03-27T06:44:51","indexId":"70035411","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3459,"text":"Special Paper of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Origin and emplacement of impactites in the Chesapeake Bay impact structure, Virginia, USA","docAbstract":"

The late Eocene Chesapeake Bay impact structure, located on the Atlantic margin of Virginia, may be Earth's best-preserved large impact structure formed in a shallow marine, siliciclastic, continental-shelf environment. It has the form of an inverted sombrero in which a central crater ∼40 km in diameter is surrounded by a shallower brim, the annular trough, that extends the diameter to ∼85 km. The annular trough is interpreted to have formed largely by the collapse and mobilization of weak sediments. Crystalline-clast suevite, found only in the central crater, contains clasts and blocks of shocked gneiss that likely were derived from the fragmentation of the central-uplift basement. The suevite and entrained megablocks are interpreted to have formed from impact-melt particles and crystalline-rock debris that never left the central crater, rather than as a fallback deposit. Impact-modified sediments in the annular trough include megablocks of Cretaceous nonmarine sediment disrupted by faults, fluidized sands, fractured clays, and mixed-sediment intercalations. These impact-modified sediments could have formed by a combination of processes, including ejection into and mixing of sediments in the water column, rarefaction-induced fragmentation and clastic injection, liquefaction and fluidization of sand in response to acousticwave vibrations, gravitational collapse, and inward lateral spreading. The Exmore beds, which blanket the entire crater and nearby areas, consist of a lower diamicton member overlain by an upper stratified member. They are interpreted as unstratified ocean-resurge deposits, having depositional cycles that may represent stages of inward resurge or outward anti-resurge flow, overlain by stratified fallout of suspended sediment from the water column.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/2008.2437(06)","issn":"00721077","usgsCitation":"Horton,, J., Gohn, G., Powars, D.S., and Edwards, L.E., 2007, Origin and emplacement of impactites in the Chesapeake Bay impact structure, Virginia, USA: Special Paper of the Geological Society of America, no. 437, p. 73-97, https://doi.org/10.1130/2008.2437(06).","productDescription":"25 p.","startPage":"73","endPage":"97","numberOfPages":"25","costCenters":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true},{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"links":[{"id":243112,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Chesapeake Bay","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -77.54150390625,\n 36.73888412439431\n ],\n [\n -75.157470703125,\n 36.73888412439431\n ],\n [\n -75.157470703125,\n 39.70718665682654\n ],\n [\n -77.54150390625,\n 39.70718665682654\n ],\n [\n -77.54150390625,\n 36.73888412439431\n ]\n ]\n ]\n }\n }\n ]\n}","issue":"437","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a70a4e4b0c8380cd76159","contributors":{"authors":[{"text":"Horton,, J. Wright Jr. 0000-0001-6756-6365","orcid":"https://orcid.org/0000-0001-6756-6365","contributorId":219824,"corporation":false,"usgs":true,"family":"Horton,","given":"J. Wright","suffix":"Jr.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":true,"id":450538,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gohn, Gregory 0000-0003-2000-479X ggohn@usgs.gov","orcid":"https://orcid.org/0000-0003-2000-479X","contributorId":219822,"corporation":false,"usgs":true,"family":"Gohn","given":"Gregory","email":"ggohn@usgs.gov","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true},{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":450537,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Powars, David S. 0000-0002-6787-8964 dspowars@usgs.gov","orcid":"https://orcid.org/0000-0002-6787-8964","contributorId":1181,"corporation":false,"usgs":true,"family":"Powars","given":"David","email":"dspowars@usgs.gov","middleInitial":"S.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true},{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":450536,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Edwards, Lucy E. 0000-0003-4075-3317 leedward@usgs.gov","orcid":"https://orcid.org/0000-0003-4075-3317","contributorId":2647,"corporation":false,"usgs":true,"family":"Edwards","given":"Lucy","email":"leedward@usgs.gov","middleInitial":"E.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true},{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":true,"id":450535,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70035282,"text":"70035282 - 2007 - Seismic hazard and risk assessment in the intraplate environment: The New Madrid seismic zone of the central United States","interactions":[],"lastModifiedDate":"2012-03-12T17:21:53","indexId":"70035282","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3459,"text":"Special Paper of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Seismic hazard and risk assessment in the intraplate environment: The New Madrid seismic zone of the central United States","docAbstract":"Although the causes of large intraplate earthquakes are still not fully understood, they pose certain hazard and risk to societies. Estimating hazard and risk in these regions is difficult because of lack of earthquake records. The New Madrid seismic zone is one such region where large and rare intraplate earthquakes (M = 7.0 or greater) pose significant hazard and risk. Many different definitions of hazard and risk have been used, and the resulting estimates differ dramatically. In this paper, seismic hazard is defined as the natural phenomenon generated by earthquakes, such as ground motion, and is quantified by two parameters: a level of hazard and its occurrence frequency or mean recurrence interval; seismic risk is defined as the probability of occurrence of a specific level of seismic hazard over a certain time and is quantified by three parameters: probability, a level of hazard, and exposure time. Probabilistic seismic hazard analysis (PSHA), a commonly used method for estimating seismic hazard and risk, derives a relationship between a ground motion parameter and its return period (hazard curve). The return period is not an independent temporal parameter but a mathematical extrapolation of the recurrence interval of earthquakes and the uncertainty of ground motion. Therefore, it is difficult to understand and use PSHA. A new method is proposed and applied here for estimating seismic hazard in the New Madrid seismic zone. This method provides hazard estimates that are consistent with the state of our knowledge and can be easily applied to other intraplate regions. ?? 2007 The Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Special Paper of the Geological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/2007.2425(24)","issn":"00721077","usgsCitation":"Wang, Z., 2007, Seismic hazard and risk assessment in the intraplate environment: The New Madrid seismic zone of the central United States: Special Paper of the Geological Society of America, no. 425, p. 363-374, https://doi.org/10.1130/2007.2425(24).","startPage":"363","endPage":"374","numberOfPages":"12","costCenters":[],"links":[{"id":243267,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215459,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/2007.2425(24)"}],"issue":"425","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8b15e4b08c986b31759a","contributors":{"authors":[{"text":"Wang, Z.","contributorId":67976,"corporation":false,"usgs":true,"family":"Wang","given":"Z.","affiliations":[],"preferred":false,"id":450008,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70029736,"text":"70029736 - 2007 - The influence of extractable organic matter on vitrinite reflectance suppression: A survey of kerogen and coal types","interactions":[],"lastModifiedDate":"2012-03-12T17:21:06","indexId":"70029736","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2033,"text":"International Journal of Coal Geology","active":true,"publicationSubtype":{"id":10}},"title":"The influence of extractable organic matter on vitrinite reflectance suppression: A survey of kerogen and coal types","docAbstract":"The vitrinite reflectance suppression literature shows that while bitumen impregnation of the vitrinite group is often invoked as a significant contributor to suppression, its existence is not often supported by petrological evidence. This study examines bitumen impregnation as a factor in vitrinite suppression by comparing the vitrinite reflectance of source rock and coal samples before and after solvent-extraction. Bitumen, often defined as organic matter soluble or extractable in certain organic solvents, should be removed by Soxhlet method solvent extraction using chloroform. Removing the extractable bitumen should restore the suppressed reflectance to its true higher value. However, the solvent extracted samples averaged 0.014% Rv less than that of the unextracted samples. We conclude from these results and from other published data that reflectance suppression by bitumen impregnation in the vitrinite maceral group, above the huminite stage of gelification, is seemingly a rare phenomenon and whose effect on suppressing vitrinite reflectance is typically negligible. ?? 2006.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Coal Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.coal.2006.03.005","issn":"01665162","usgsCitation":"Barker, C., Lewan, M.D., and Pawlewicz, M., 2007, The influence of extractable organic matter on vitrinite reflectance suppression: A survey of kerogen and coal types: International Journal of Coal Geology, v. 70, no. 1-3 SPEC. ISS., p. 67-78, https://doi.org/10.1016/j.coal.2006.03.005.","startPage":"67","endPage":"78","numberOfPages":"12","costCenters":[],"links":[{"id":212859,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.coal.2006.03.005"},{"id":240416,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"70","issue":"1-3 SPEC. ISS.","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bad1fe4b08c986b3239ba","contributors":{"authors":[{"text":"Barker, C.E.","contributorId":69991,"corporation":false,"usgs":true,"family":"Barker","given":"C.E.","affiliations":[],"preferred":false,"id":424058,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lewan, M. D.","contributorId":46540,"corporation":false,"usgs":true,"family":"Lewan","given":"M.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":424057,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pawlewicz, M. J.","contributorId":75111,"corporation":false,"usgs":true,"family":"Pawlewicz","given":"M. J.","affiliations":[],"preferred":false,"id":424059,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029743,"text":"70029743 - 2007 - Reappearance of deepwater sculpin in Lake Ontario: Resurgence or last gasp of a doomed population?","interactions":[],"lastModifiedDate":"2016-05-02T10:13:58","indexId":"70029743","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2330,"text":"Journal of Great Lakes Research","active":true,"publicationSubtype":{"id":10}},"title":"Reappearance of deepwater sculpin in Lake Ontario: Resurgence or last gasp of a doomed population?","docAbstract":"

Deepwater sculpin (Myoxocephalus thompsonii) were abundant in Lake Ontario in the 1920s and at least common into the 1940s. By the 1960s they were rare and, thereafter, some considered the population extirpated even though a synoptic survey of the lake in 1972 produced three, relatively large (148–165 mm total length, TL), and presumably old, specimens from the northern half of the lake. Deepwater sculpin were absent from annual survey catches in the 1980s and did not reappear until 1996, when three were caught in northern Lake Ontario. Isolated collections of deepwater sculpin continued during 1998–2004. Catches during 1996–2004 included five smaller individuals, 89–118 mm TL. In 2005, catches increased sharply, with 18 deepwater sculpin collected from southern waters and one from northern waters. Moreover, young, small sculpin were dominant in 2005—16 of the 19 sculpins averaged 68 ± 12 mm total length (± 1 s.d.). The young fish observed since 1996 could have originated from reproduction by the small in-lake population, from downstream drift of planktonic larvae from Lake Huron, or both. The presence of juveniles is a clear sign that conditions for survival of young deepwater sculpin are becoming more favorable, perhaps because of reduced abundance of alewife (Alosa pseudoharengus), a pelagic planktivore linked to depression of deepwater sculpin in Lake Michigan, and also low abundances of burbot (Lota lota) and lake trout (Salvelinus namaycush), benthic piscivores.

","language":"English","publisher":"International Association for Great Lakes Research","doi":"10.3394/0380-1330(2007)33[34:RODSIL]2.0.CO;2","issn":"03801330","usgsCitation":"Lantry, B., O'Gorman, R., Walsh, M.G., Casselman, J., Hoyle, J., Keir, M., and Lantry, J., 2007, Reappearance of deepwater sculpin in Lake Ontario: Resurgence or last gasp of a doomed population?: Journal of Great Lakes Research, v. 33, no. Supplement 1, p. 34-45, https://doi.org/10.3394/0380-1330(2007)33[34:RODSIL]2.0.CO;2.","productDescription":"12 p.","startPage":"34","endPage":"45","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":240514,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212945,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3394/0380-1330(2007)33[34:RODSIL]2.0.CO;2"}],"volume":"33","issue":"Supplement 1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a95b3e4b0c8380cd81bac","contributors":{"authors":[{"text":"Lantry, B.F.","contributorId":19105,"corporation":false,"usgs":true,"family":"Lantry","given":"B.F.","email":"","affiliations":[],"preferred":false,"id":424091,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"O'Gorman, R.","contributorId":48896,"corporation":false,"usgs":true,"family":"O'Gorman","given":"R.","affiliations":[],"preferred":false,"id":424096,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Walsh, M. G.","contributorId":72172,"corporation":false,"usgs":true,"family":"Walsh","given":"M.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":424097,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Casselman, J.M.","contributorId":35278,"corporation":false,"usgs":true,"family":"Casselman","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":424095,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hoyle, J.A.","contributorId":23903,"corporation":false,"usgs":true,"family":"Hoyle","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":424093,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Keir, M.J.","contributorId":26518,"corporation":false,"usgs":true,"family":"Keir","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":424094,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Lantry, J.R.","contributorId":20972,"corporation":false,"usgs":true,"family":"Lantry","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":424092,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70029753,"text":"70029753 - 2007 - Habitat characteristics of adult frosted elfins (Callophrys irus) in sandplain communities of southeastern Massachusetts, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:39","indexId":"70029753","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1015,"text":"Biological Conservation","active":true,"publicationSubtype":{"id":10}},"title":"Habitat characteristics of adult frosted elfins (Callophrys irus) in sandplain communities of southeastern Massachusetts, USA","docAbstract":"Changes to land use and disturbance frequency threaten disturbance-dependent Lepidoptera within sandplain habitats of the northeastern United States. The frosted elfin (Callophrys irus) is a rare and declining monophagous butterfly that is found in xeric open habitats maintained by disturbance. We surveyed potential habitat for adult frosted elfins at four sites containing frosted elfin populations in southeastern Massachusetts, United States. Based on the survey data, we used kernel density estimation to establish separate adult frosted elfin density classes, and then used regression tree analysis to describe the relationship between density and habitat features. Adult frosted elfin density was greatest when the host plant, wild indigo (Baptisia tinctoria), density was >2.6 plants/m2 and tree canopy cover was <29%. Frosted elfin density was inversely related to tree cover and declined when the density of wild indigo was <2.6 plants/m2 and shrub cover was ???16%. Even small quantities of non-native shrub cover negatively affected elfin densities. This effect was more pronounced when native herbaceous cover was <36%. Our results indicate that management for frosted elfins should aim to increase both wild indigo density and native herbaceous cover and limit native tree and shrub cover in open sandplain habitats. Elimination of non-native shrub cover is also recommended because of the negative effects of even low non-native shrub cover on frosted elfin densities. The maintenance of patches of early successional sandplain habitat with the combination of low tree and shrub cover, high host plant densities, and the absence of non-native shrubs appears essential for frosted elfin persistence, but may also be beneficial for a number of other rare sandplain insects and plant species. ?? 2006 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biological Conservation","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.biocon.2006.10.055","issn":"00063207","usgsCitation":"Albanese, G., Vickery, P., and Sievert, P., 2007, Habitat characteristics of adult frosted elfins (Callophrys irus) in sandplain communities of southeastern Massachusetts, USA: Biological Conservation, v. 136, no. 1, p. 53-64, https://doi.org/10.1016/j.biocon.2006.10.055.","startPage":"53","endPage":"64","numberOfPages":"12","costCenters":[],"links":[{"id":240644,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213060,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.biocon.2006.10.055"}],"volume":"136","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2f00e4b0c8380cd5c9e1","contributors":{"authors":[{"text":"Albanese, G.","contributorId":67722,"corporation":false,"usgs":true,"family":"Albanese","given":"G.","email":"","affiliations":[],"preferred":false,"id":424125,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vickery, P.D.","contributorId":45427,"corporation":false,"usgs":true,"family":"Vickery","given":"P.D.","affiliations":[],"preferred":false,"id":424124,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sievert, P.R.","contributorId":104858,"corporation":false,"usgs":true,"family":"Sievert","given":"P.R.","email":"","affiliations":[],"preferred":false,"id":424126,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70032763,"text":"70032763 - 2007 - Assessing exotic plant species invasions and associated soil characteristics: A case study in eastern Rocky Mountain National Park, Colorado, USA, using the pixel nested plot design","interactions":[],"lastModifiedDate":"2012-03-12T17:21:24","indexId":"70032763","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":846,"text":"Applied Soil Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Assessing exotic plant species invasions and associated soil characteristics: A case study in eastern Rocky Mountain National Park, Colorado, USA, using the pixel nested plot design","docAbstract":"Rocky Mountain National Park (RMNP), Colorado, USA, contains a diversity of plant species. However, many exotic plant species have become established, potentially impacting the structure and function of native plant communities. Our goal was to quantify patterns of exotic plant species in relation to native plant species, soil characteristics, and other abiotic factors that may indicate or predict their establishment and success. Our research approach for field data collection was based on a field plot design called the pixel nested plot. The pixel nested plot provides a link to multi-phase and multi-scale spatial modeling-mapping techniques that can be used to estimate total species richness and patterns of plant diversity at finer landscape scales. Within the eastern region of RMNP, in an area of approximately 35,000 ha, we established a total of 60 pixel nested plots in 9 vegetation types. We used canonical correspondence analysis (CCA) and multiple linear regressions to quantify relationships between soil characteristics and native and exotic plant species richness and cover. We also used linear correlation, spatial autocorrelation and cross correlation statistics to test for the spatial patterns of variables of interest. CCA showed that exotic species were significantly (P < 0.05) associated with photosynthetically active radiation (r = 0.55), soil nitrogen (r = 0.58) and bare ground (r = -0.66). Pearson's correlation statistic showed significant linear relationships between exotic species, organic carbon, soil nitrogen, and bare ground. While spatial autocorrelations indicated that our 60 pixel nested plots were spatially independent, the cross correlation statistics indicated that exotic plant species were spatially associated with bare ground, in general, exotic plant species were most abundant in areas of high native species richness. This indicates that resource managers should focus on the protection of relatively rare native rich sites with little canopy cover, and fertile soils. Using the pixel nested plot approach for data collection can facilitate the ecological monitoring of these vulnerable areas at the landscape scale in a time- and cost-effective manner. ?? 2006 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Soil Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.apsoil.2006.09.009","issn":"09291393","usgsCitation":"Kalkhan, M.A., Stafford, E., Woodly, P., and Stohlgren, T., 2007, Assessing exotic plant species invasions and associated soil characteristics: A case study in eastern Rocky Mountain National Park, Colorado, USA, using the pixel nested plot design: Applied Soil Ecology, v. 35, no. 3, p. 622-634, https://doi.org/10.1016/j.apsoil.2006.09.009.","startPage":"622","endPage":"634","numberOfPages":"13","costCenters":[],"links":[{"id":241496,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213835,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apsoil.2006.09.009"}],"volume":"35","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059edd3e4b0c8380cd49a25","contributors":{"authors":[{"text":"Kalkhan, M. A.","contributorId":82655,"corporation":false,"usgs":false,"family":"Kalkhan","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":437806,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stafford, E.J.","contributorId":11831,"corporation":false,"usgs":true,"family":"Stafford","given":"E.J.","email":"","affiliations":[],"preferred":false,"id":437804,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Woodly, P.J.","contributorId":35963,"corporation":false,"usgs":true,"family":"Woodly","given":"P.J.","email":"","affiliations":[],"preferred":false,"id":437805,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stohlgren, T.J.","contributorId":7217,"corporation":false,"usgs":true,"family":"Stohlgren","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":437803,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70032832,"text":"70032832 - 2007 - Distribution and abundance of zooplankton populations in Crater Lake, Oregon","interactions":[],"lastModifiedDate":"2017-11-15T13:38:04","indexId":"70032832","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1919,"text":"Hydrobiologia","onlineIssn":"1573-5117","printIssn":"0018-8158","active":true,"publicationSubtype":{"id":10}},"title":"Distribution and abundance of zooplankton populations in Crater Lake, Oregon","docAbstract":"The zooplankton assemblages in Crater Lake exhibited consistency in species richness and general taxonomic composition, but varied in density and biomass during the period between 1988 and 2000. Collectively, the assemblages included 2 cladoceran taxa and 10 rotifer taxa (excluding rare taxa). Vertical habitat partitioning of the water column to a depth of 200 m was observed for most species with similar food habits and/or feeding mechanisms. No congeneric replacement was observed. The dominant species in the assemblages were variable, switching primarily between periods of dominance of Polyarthra-Keratella cochlearis and Daphnia. The unexpected occurrence and dominance of Asplanchna in 1991 and 1992 resulted in a major change in this typical temporal shift between Polyarthra-K. cochlearis and Daphnia. Following a collapse of the zooplankton biomass in 1993 that was probably caused by predation from Asplanchna, Kellicottia dominated the zooplankton assemblage biomass between 1994 and 1997. The decline in biomass of Kellicottia by 1998 coincided with a dramatic increase in Daphnia biomass. When Daphnia biomass declined by 2000, Keratella biomass increased again. Thus, by 1998 the assemblage returned to the typical shift between Keratella-Polyarthra and Daphnia. Although these observations provided considerable insight about the interannual variability of the zooplankton assemblages in Crater Lake, little was discovered about mechanisms behind the variability. When abundant, kokanee salmon may have played an important role in the disappearance of Daphnia in 1990 and 2000 either through predation, inducing diapause, or both. ?? 2007 Springer Science+Business Media B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrobiologia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10750-006-0354-2","issn":"00188158","usgsCitation":"Larson, G., McIntire, C.D., Buktenica, M., Girdner, S., and Truitt, R., 2007, Distribution and abundance of zooplankton populations in Crater Lake, Oregon: Hydrobiologia, v. 574, no. 1, p. 217-233, https://doi.org/10.1007/s10750-006-0354-2.","startPage":"217","endPage":"233","numberOfPages":"17","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":241499,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213838,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10750-006-0354-2"}],"volume":"574","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a027ae4b0c8380cd50071","contributors":{"authors":[{"text":"Larson, G.L.","contributorId":103021,"corporation":false,"usgs":true,"family":"Larson","given":"G.L.","email":"","affiliations":[],"preferred":false,"id":438160,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McIntire, C. D.","contributorId":35274,"corporation":false,"usgs":false,"family":"McIntire","given":"C.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":438157,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Buktenica, M.W.","contributorId":68263,"corporation":false,"usgs":true,"family":"Buktenica","given":"M.W.","affiliations":[],"preferred":false,"id":438158,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Girdner, S.F.","contributorId":71773,"corporation":false,"usgs":true,"family":"Girdner","given":"S.F.","affiliations":[],"preferred":false,"id":438159,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Truitt, R.E.","contributorId":23901,"corporation":false,"usgs":true,"family":"Truitt","given":"R.E.","email":"","affiliations":[],"preferred":false,"id":438156,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70029777,"text":"70029777 - 2007 - Trace element chemistry of zircons from oceanic crust: A method for distinguishing detrital zircon provenance","interactions":[],"lastModifiedDate":"2012-03-12T17:21:06","indexId":"70029777","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Trace element chemistry of zircons from oceanic crust: A method for distinguishing detrital zircon provenance","docAbstract":"We present newly acquired trace element compositions for more than 300 zircon grains in 36 gabbros formed at the slow-spreading Mid-Atlantic and Southwest Indian Ridges. Rare earth element patterns for zircon from modern oceanic crust completely overlap with those for zircon crystallized in continental granitoids. However, plots of U versus Yb and U/Yb versus Hf or Y discriminate zircons crystallized in oceanic crust from continental zircon, and provide a relatively robust method for distinguishing zircons from these environments. Approximately 80% of the modern ocean crust zircons are distinct from the field defined by more than 1700 continental zircons from Archean and Phanerozoic samples. These discrimination diagrams provide a new tool for fingerprinting ocean crust zircons derived from reservoirs like that of modern mid-ocean ridge basalt (MORB) in both modern and ancient detrital zircon populations. Hadean detrital zircons previously reported from the Acasta Gneiss, Canada, and the Narryer Gneiss terrane, Western Australia, plot in the continental granitoid field, supporting hypotheses that at least some Hadean detrital zircons crystallized in continental crust forming magmas and not from a reservoir like modern MORB. ?? 2007 The Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/G23603A.1","issn":"00917613","usgsCitation":"Grimes, C.B., John, B., Kelemen, P., Mazdab, F., Wooden, J.L., Cheadle, M.J., Hanghoj, K., and Schwartz, J., 2007, Trace element chemistry of zircons from oceanic crust: A method for distinguishing detrital zircon provenance: Geology, v. 35, no. 7, p. 643-646, https://doi.org/10.1130/G23603A.1.","startPage":"643","endPage":"646","numberOfPages":"4","costCenters":[],"links":[{"id":212888,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G23603A.1"},{"id":240450,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"35","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb637e4b08c986b326b25","contributors":{"authors":[{"text":"Grimes, Craig B.","contributorId":68261,"corporation":false,"usgs":true,"family":"Grimes","given":"Craig","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":424254,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"John, Barbara E.","contributorId":61833,"corporation":false,"usgs":true,"family":"John","given":"Barbara E.","affiliations":[],"preferred":false,"id":424253,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kelemen, P.B.","contributorId":107034,"corporation":false,"usgs":true,"family":"Kelemen","given":"P.B.","email":"","affiliations":[],"preferred":false,"id":424256,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mazdab, F.K.","contributorId":11650,"corporation":false,"usgs":true,"family":"Mazdab","given":"F.K.","email":"","affiliations":[],"preferred":false,"id":424249,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wooden, J. L.","contributorId":58678,"corporation":false,"usgs":true,"family":"Wooden","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":424252,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Cheadle, Michael J.","contributorId":68945,"corporation":false,"usgs":true,"family":"Cheadle","given":"Michael","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":424255,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Hanghoj, K.","contributorId":17836,"corporation":false,"usgs":true,"family":"Hanghoj","given":"K.","email":"","affiliations":[],"preferred":false,"id":424250,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Schwartz, J.J.","contributorId":24572,"corporation":false,"usgs":true,"family":"Schwartz","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":424251,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70032834,"text":"70032834 - 2007 - Sediment compaction rates and subsidence in deltaic plains: Numerical constraints and stratigraphic influences","interactions":[],"lastModifiedDate":"2017-11-18T10:02:55","indexId":"70032834","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Sediment compaction rates and subsidence in deltaic plains: Numerical constraints and stratigraphic influences","docAbstract":"Natural sediment compaction in deltaic plains influences subsidence rates and the evolution of deltaic morphology. Determining compaction rates requires detailed knowledge of subsurface geotechnical properties and depositional history, neither of which is often readily available. To overcome this lack of knowledge, we numerically forward model the incremental sedimentation and compaction of stochastically generated stratigraphies with geotechnical properties typical of modern depositional environments in the Mississippi River delta plain. Using a Monte Carlo approach, the range of probable compaction rates for stratigraphies with compacted thicknesses <150 m and accumulation times <20 kyr. varies, but maximum values rarely exceed a few mm yr−1. The fastest compacting stratigraphies are composed primarily of peat and bar sand, whereas the slowest compacting stratigraphies are composed of prodelta mud and natural levee deposits. These results suggest that compaction rates can significantly influence vertical and lateral stratigraphic trends during deltaic evolution.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Basin Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Wiley","doi":"10.1111/j.1365-2117.2006.00310.x","issn":"0950091X","usgsCitation":"Meckel, T., ten Brink, U., and Williams, S., 2007, Sediment compaction rates and subsidence in deltaic plains: Numerical constraints and stratigraphic influences: Basin Research, v. 19, no. 1, p. 19-31, https://doi.org/10.1111/j.1365-2117.2006.00310.x.","productDescription":"13 p.","startPage":"19","endPage":"31","numberOfPages":"13","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":477248,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hdl.handle.net/1912/1601","text":"External Repository"},{"id":241535,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213870,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-2117.2006.00310.x"}],"volume":"19","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-02-05","publicationStatus":"PW","scienceBaseUri":"505b8963e4b08c986b316dbd","contributors":{"authors":[{"text":"Meckel, T.A.","contributorId":91676,"corporation":false,"usgs":true,"family":"Meckel","given":"T.A.","email":"","affiliations":[],"preferred":false,"id":438166,"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":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":438164,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Williams, S.J.","contributorId":85203,"corporation":false,"usgs":true,"family":"Williams","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":438165,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029796,"text":"70029796 - 2007 - Arc-parallel extension and fluid flow in an ancient accretionary wedge: The San Juan Islands, Washington","interactions":[],"lastModifiedDate":"2017-04-12T16:02:18","indexId":"70029796","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Arc-parallel extension and fluid flow in an ancient accretionary wedge: The San Juan Islands, Washington","docAbstract":"Structural analysis of the Lopez Structural Complex, a major Late Cretaceous terrane-bounding fault zone in the San Juan thrust system, reveals a sequence of events that provides insight into accretionary wedge mechanics and regional tectonics. After formation of regional ductile flattening and shear-related fabrics, the area was crosscut by brittle structures including: (1) southwest-vergent thrusts, (2) extension veins and normal faults related to northwest-southeast extension, and (3) conjugate strike-slip structures that record northwest-southeast extension and northeast-southwest shortening. Aragonite-bearing veins are associated with thrust and normal faults, but only rarely with strike-slip faults. High-pressure, low-temperature (HP-LT) minerals constrain the conditions for brittle deformation to ???20 km and <250 ??C. The presence of similar structures elsewhere indicates that the brittle structural sequence is typical of the San Juan nappes. Sustained HP-LT conditions are possible only if structures formed in an accretionary prism during active subduction, which suggests that these brittle structures record internal wedge deformation at depth and early during uplift of the San Juan nappes. The structures are consistent with orogen-normal shortening and vertical thickening followed by vertical thinning and along-strike extension. The kinematic evolution may be related initially to changes in wedge strength, followed by response to overthickening of the wedge in an unbuttressed, obliquely convergent setting. The change in vein mineralogy indicates that exhumation occurred prior to the strike-slip event. The pressure and temperature conditions and spatial and temporal extent of small faults associated with fluid flow suggest a link between these structures and the silent earthquake process. ?? 2007 Geological Society of America.","language":"English","publisher":"Geological Society of America","doi":"10.1130/B25985.1","issn":"00167606","usgsCitation":"Schermer, E.R., Gillaspy, J., and Lamb, R., 2007, Arc-parallel extension and fluid flow in an ancient accretionary wedge: The San Juan Islands, Washington: Geological Society of America Bulletin, v. 119, no. 5-6, p. 753-767, https://doi.org/10.1130/B25985.1.","productDescription":"15 p.","startPage":"753","endPage":"767","numberOfPages":"15","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":240206,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212681,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/B25985.1"}],"volume":"119","issue":"5-6","noUsgsAuthors":false,"publicationDate":"2007-05-08","publicationStatus":"PW","scienceBaseUri":"5059ed2ce4b0c8380cd49687","contributors":{"authors":[{"text":"Schermer, Elizabeth R.","contributorId":184060,"corporation":false,"usgs":false,"family":"Schermer","given":"Elizabeth","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":424379,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gillaspy, J.R.","contributorId":13441,"corporation":false,"usgs":true,"family":"Gillaspy","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":424377,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lamb, R.","contributorId":72206,"corporation":false,"usgs":true,"family":"Lamb","given":"R.","email":"","affiliations":[],"preferred":false,"id":424378,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029850,"text":"70029850 - 2007 - The rate and pattern of bed incision and bank adjustment on the Colorado River in Glen Canyon downstream from Glen Canyon Dam, 1956-2000","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029850","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"The rate and pattern of bed incision and bank adjustment on the Colorado River in Glen Canyon downstream from Glen Canyon Dam, 1956-2000","docAbstract":"Closure of Glen Canyon Dam in 1963 transformed the Colorado River by reducing the magnitude and duration of spring floods, increasing the magnitude of base flows, and trapping fine sediment delivered from the upper watershed. These changes caused the channel downstream in Glen Canyon to incise, armor, and narrow. This study synthesizes over 45 yr of channel-change measurements and demonstrates that the rate and style of channel adjustment are directly related to both natural processes associated with sediment deficit and human decisions about dam operations. Although bed lowering in lower Glen Canyon began when the first cofferdam was installed in 1959, most incision occurred in 1965 in conjunction with 14 pulsed high flows that scoured an average of 2.6 m of sediment from the center of the channel. The average grain size of bed material has increased from 0.25 mm in 1956 to over 20 mm in 1999. The magnitude of incision at riffles decreases with distance downstream from the dam, while the magnitude of sediment evacuation from pools is spatially variable and extends farther downstream. Analysis of bed-material mobility indicates that the increase in bed-material grain size and reduction in reach-average gradient are consistent with the transformation of an adjustable-bed alluvial river to a channel with a stable bed that is rarely mobilized. Decreased magnitude of peak discharges in the post-dam regime coupled with channel incision and the associated downward shifts of stage-discharge relations have caused sandbar and terrace erosion and the transformation of previously active sandbars and gravel bars to abandoned deposits that are no longer inundated. Erosion has been concentrated in a few pre-dam terraces that eroded rapidly for brief periods and have since stabilized. The abundance of abandoned deposits decreases downstream in conjunction with decreasing magnitude of shift in the stage-discharge relations. In the downstream part of the study area where riffles controlling channel elevation have not incised, channel narrowing has resulted from decreased magnitude of peak discharges and minor post-dam deposition. These physical changes to the aquatic and riparian systems have supported the establishment and success of an artifact ecosystem dominated by non-native species. Models for the channel response downstream from large dams typically consider factors such as the degree of sediment deficit, the pre-dam surface and subsurface grain size, and the magnitude of post-dam average flows. These results suggest that it is also necessary to consider (1) the possibility of variable responses among different channel elements and (2) the potential importance of exceptional flows resulting from management decisions. ?? 2007 Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geological Society of America Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/B25969.1","issn":"00167606","usgsCitation":"Grams, P., Schmidt, J.C., and Topping, D., 2007, The rate and pattern of bed incision and bank adjustment on the Colorado River in Glen Canyon downstream from Glen Canyon Dam, 1956-2000: Geological Society of America Bulletin, v. 119, no. 5-6, p. 556-575, https://doi.org/10.1130/B25969.1.","startPage":"556","endPage":"575","numberOfPages":"20","costCenters":[],"links":[{"id":212950,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/B25969.1"},{"id":240520,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"119","issue":"5-6","noUsgsAuthors":false,"publicationDate":"2007-05-08","publicationStatus":"PW","scienceBaseUri":"505baef2e4b08c986b32443f","contributors":{"authors":[{"text":"Grams, P.E.","contributorId":64032,"corporation":false,"usgs":true,"family":"Grams","given":"P.E.","email":"","affiliations":[],"preferred":false,"id":424582,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schmidt, J. C.","contributorId":60245,"corporation":false,"usgs":true,"family":"Schmidt","given":"J.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":424581,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Topping, D.J. 0000-0002-2104-4577","orcid":"https://orcid.org/0000-0002-2104-4577","contributorId":53927,"corporation":false,"usgs":true,"family":"Topping","given":"D.J.","affiliations":[],"preferred":false,"id":424580,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029870,"text":"70029870 - 2007 - PIT tags increase effectiveness of freshwater mussel recaptures","interactions":[],"lastModifiedDate":"2017-11-06T09:46:14","indexId":"70029870","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2564,"text":"Journal of the North American Benthological Society","onlineIssn":"1937-237X","printIssn":"0887-3593","active":true,"publicationSubtype":{"id":10}},"title":"PIT tags increase effectiveness of freshwater mussel recaptures","docAbstract":"Translocations are used increasingly to conserve populations of rare freshwater mussels. Recovery of translocated mussels is essential to accurate assessment of translocation success. We designed an experiment to evaluate the use of passive integrated transponder (PIT) tags to mark and track individual freshwater mussels. We used eastern lampmussels (Lampsilis radiata radiata) as a surrogate for 2 rare mussel species. We assessed internal and external PIT-tag retention in the laboratory and field. Internal tag retention was high (75-100%), and tag rejection occurred primarily during the first 3 wk after tagging. A thin layer of nacre coated internal tags 3 to 4 mo after insertion, suggesting that long-term retention is likely. We released mussels with external PIT tags at 3 field study sites and recaptured them with a PIT pack (mobile interrogation unit) 8 to 10 mo and 21 to 23 mo after release. Numbers of recaptured mussels differed among study sites; however, we found more tagged mussels with the PIT-pack searches with visual confirmation (72-80%) than with visual searches alone (30-47%) at all sites. PIT tags offer improved recapture of translocated mussels and increased accuracy of posttranslocation monitoring. ?? 2007 by The North American Benthological Society.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the North American Benthological Society","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1899/0887-3593(2007)26[253:PTIEOF]2.0.CO;2","issn":"08873593","usgsCitation":"Kurth, J., Loftin, C., Zydlewski, J.D., and Rhymer, J., 2007, PIT tags increase effectiveness of freshwater mussel recaptures: Journal of the North American Benthological Society, v. 26, no. 2, p. 253-260, https://doi.org/10.1899/0887-3593(2007)26[253:PTIEOF]2.0.CO;2.","startPage":"253","endPage":"260","numberOfPages":"8","costCenters":[],"links":[{"id":240316,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212778,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1899/0887-3593(2007)26[253:PTIEOF]2.0.CO;2"}],"volume":"26","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a735ee4b0c8380cd76fc5","contributors":{"authors":[{"text":"Kurth, J.","contributorId":7504,"corporation":false,"usgs":true,"family":"Kurth","given":"J.","email":"","affiliations":[],"preferred":false,"id":424669,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Loftin, C.","contributorId":78939,"corporation":false,"usgs":true,"family":"Loftin","given":"C.","email":"","affiliations":[],"preferred":false,"id":424671,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zydlewski, Joseph D. 0000-0002-2255-2303 jzydlewski@usgs.gov","orcid":"https://orcid.org/0000-0002-2255-2303","contributorId":2004,"corporation":false,"usgs":true,"family":"Zydlewski","given":"Joseph","email":"jzydlewski@usgs.gov","middleInitial":"D.","affiliations":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true},{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true},{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":false,"id":424668,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rhymer, Judith","contributorId":63507,"corporation":false,"usgs":true,"family":"Rhymer","given":"Judith","email":"","affiliations":[],"preferred":false,"id":424670,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ]}