{"pageNumber":"2318","pageRowStart":"57925","pageSize":"25","recordCount":184635,"records":[{"id":70029867,"text":"70029867 - 2007 - Developments in seismic monitoring for risk reduction","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70029867","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2447,"text":"Journal of Risk Research","active":true,"publicationSubtype":{"id":10}},"title":"Developments in seismic monitoring for risk reduction","docAbstract":"This paper presents recent state-of-the-art developments to obtain displacements and drift ratios for seismic monitoring and damage assessment of buildings. In most cases, decisions on safety of buildings following seismic events are based on visual inspections of the structures. Real-time instrumental measurements using GPS or double integration of accelerations, however, offer a viable alternative. Relevant parameters, such as the type of connections and structural characteristics (including storey geometry), can be estimated to compute drifts corresponding to several pre-selected threshold stages of damage. Drift ratios determined from real-time monitoring can then be compared to these thresholds in order to estimate damage conditions drift ratios. This approach is demonstrated in three steel frame buildings in San Francisco, California. Recently recorded data of strong shaking from these buildings indicate that the monitoring system can be a useful tool in rapid assessment of buildings and other structures following an earthquake. Such systems can also be used for risk monitoring, as a method to assess performance-based design and analysis procedures, for long-term assessment of structural characteristics of a building, and as a possible long-term damage detection tool.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Risk Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1080/13669870701447964","issn":"13669877","usgsCitation":"Çelebi, M., 2007, Developments in seismic monitoring for risk reduction: Journal of Risk Research, v. 10, no. 5, p. 715-727, https://doi.org/10.1080/13669870701447964.","startPage":"715","endPage":"727","numberOfPages":"13","costCenters":[],"links":[{"id":212719,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/13669870701447964"},{"id":240247,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"10","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0089e4b0c8380cd4f7a5","contributors":{"authors":[{"text":"Çelebi, M.","contributorId":36946,"corporation":false,"usgs":true,"family":"Çelebi","given":"M.","affiliations":[],"preferred":false,"id":424653,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70029888,"text":"70029888 - 2007 - Forward model nonlinearity versus inverse model nonlinearity","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029888","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":"Forward model nonlinearity versus inverse model nonlinearity","docAbstract":"The issue of concern is the impact of forward model nonlinearity on the nonlinearity of the inverse model. The question posed is, \"Does increased nonlinearity in the head solution (forward model) always result in increased nonlinearity in the inverse solution (estimation of hydraulic conductivity)?\" It is shown that the two nonlinearities are separate, and it is not universally true that increased forward model nonlinearity increases inverse model nonlinearity. ?? 2007 National Ground Water Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1745-6584.2007.00372.x","issn":"0017467X","usgsCitation":"Mehl, S., 2007, Forward model nonlinearity versus inverse model nonlinearity: Ground Water, v. 45, no. 6, p. 791-794, https://doi.org/10.1111/j.1745-6584.2007.00372.x.","startPage":"791","endPage":"794","numberOfPages":"4","costCenters":[],"links":[{"id":212980,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2007.00372.x"},{"id":240555,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a137de4b0c8380cd5468b","contributors":{"authors":[{"text":"Mehl, S.","contributorId":20114,"corporation":false,"usgs":true,"family":"Mehl","given":"S.","affiliations":[],"preferred":false,"id":424742,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70029887,"text":"70029887 - 2007 - Porphyry Cu-Au and associated polymetallic Fe-Cu-Au deposits in the Beiya Area, western Yunnan Province, south China","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029887","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2954,"text":"Ore Geology Reviews","active":true,"publicationSubtype":{"id":10}},"title":"Porphyry Cu-Au and associated polymetallic Fe-Cu-Au deposits in the Beiya Area, western Yunnan Province, south China","docAbstract":"The Alkaline porphyries in the Beiya area are located east of the Jinshajiang suture, as part of a Cenozoic alkali-rich porphyry belt in western Yunnan. The main rock types include quartz-albite porphyry, quartz-K-feldspar porphyry and biotite-K-feldspar porphyry. These porphyries are characterised by high alkalinity [(K2O + Na2O)% > 10%], high silica (SiO2% > 65%), high Sr (> 400??ppm) and 87Sr/86Sr (> 0.706)] ratio and were intruded at 65.5??Ma, between 25.5 to 32.5??Ma, and about 3.8??Ma, respectively. There are five main types of mineral deposits in the Beiya area: (1) porphyry Cu-Au deposits, (2) magmatic Fe-Au deposits, (3) sedimentary polymetallic deposits, (4) polymetallic skarn deposits, and (5) palaeoplacers associated with karsts. The porphyry Cu-Au and polymetallic skarn deposits are associated with quartz-albite porphyry bodies. The Fe-Au and polymetallic sedimentary deposits are part of an ore-forming system that produced considerable Au in the Beiya area, and are characterised by low concentrations of La, Ti, and Co, and high concentrations of Y, Yb, and Sc. The Cenozoic porphyries in western Yunnan display increased alkalinity away from the Triassic Jinshajiang suture. Distribution of both the porphyries and sedimentary deposits in the Beiya area are interpreted to be related to partial melting in a disjointed region between upper mantle lithosphere of the Yangtze Plate and Gondwana continent, and lie within a shear zone between buried Palaeo-Tethyan oceanic lithosphere and upper mantle lithosphere, caused by the subduction and collision of India and Asia. ?? 2006 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ore Geology Reviews","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.oregeorev.2005.03.015","issn":"01691368","usgsCitation":"Xu, X., Cai, X., Xiao, Q., and Peters, S.G., 2007, Porphyry Cu-Au and associated polymetallic Fe-Cu-Au deposits in the Beiya Area, western Yunnan Province, south China: Ore Geology Reviews, v. 31, no. 1-4, p. 224-246, https://doi.org/10.1016/j.oregeorev.2005.03.015.","startPage":"224","endPage":"246","numberOfPages":"23","costCenters":[],"links":[{"id":212979,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.oregeorev.2005.03.015"},{"id":240554,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7de3e4b0c8380cd7a20e","contributors":{"authors":[{"text":"Xu, X.-W.","contributorId":23330,"corporation":false,"usgs":true,"family":"Xu","given":"X.-W.","email":"","affiliations":[],"preferred":false,"id":424738,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cai, X.-P.","contributorId":64449,"corporation":false,"usgs":true,"family":"Cai","given":"X.-P.","email":"","affiliations":[],"preferred":false,"id":424740,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Xiao, Q.-B.","contributorId":85779,"corporation":false,"usgs":true,"family":"Xiao","given":"Q.-B.","email":"","affiliations":[],"preferred":false,"id":424741,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Peters, S. G.","contributorId":48198,"corporation":false,"usgs":true,"family":"Peters","given":"S.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":424739,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029886,"text":"70029886 - 2007 - The relationship between productivities of salmonids and forest stands in northern California watersheds","interactions":[],"lastModifiedDate":"2013-03-24T15:08:02","indexId":"70029886","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3744,"text":"Western Journal of Applied Forestry","active":true,"publicationSubtype":{"id":10}},"title":"The relationship between productivities of salmonids and forest stands in northern California watersheds","docAbstract":"Productivities of resident salmonids and upland and riporian forests in 22 small watersheds of coastal northern California were estimated and compared to determine whether: 1) upland site productivity predicted riparian site productivity; 2) either upland or riparian site productivity predicted salmonid productivity; and 3) other parameters explained more of the variance in salmonid productivity. Upland and riparian site productivities were estimated using Site Index values for redwood (Sequoia sempervirens) and red alder (Alnus rubra), respectively. Salmonid productivity was indexed by back-calculated length at age 1 of the largest individuals sampled and by total biomass. Upland and riparian site indices were correlated, but neither factor contributed to the best approximating models of salmonid productivity. Total salmonid biomass was best described by a positive relationship with drainage area. Length of dominant fish was best described by a positive relationship with percentage of hardwoods within riparian areas, which may result from nutrient and/or litter subsidies provided by red older. The inability of forest productivity to predict salmon productivity may reflect insufficient variation in independent variables, limitations of the indices, and the operation of other factors affecting salmonid production. The lack of an apparent relationship between upland conifer and salmonid productivity suggests that management of land for timber productivity and component streams for salmonid production in these sites will require separate, albeit integrated, management strategies.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Western Journal of Applied Forestry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"08856095","usgsCitation":"Frazey, S., and Wilzbach, M., 2007, The relationship between productivities of salmonids and forest stands in northern California watersheds: Western Journal of Applied Forestry, v. 22, no. 2, p. 73-80.","startPage":"73","endPage":"80","numberOfPages":"8","costCenters":[],"links":[{"id":240524,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":269924,"type":{"id":11,"text":"Document"},"url":"https://www.humboldt.edu/cuca/documents/publications/WJAF07.pdf"}],"volume":"22","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baf1be4b08c986b324559","contributors":{"authors":[{"text":"Frazey, S.L.","contributorId":93705,"corporation":false,"usgs":true,"family":"Frazey","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":424737,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wilzbach, M.A.","contributorId":48505,"corporation":false,"usgs":true,"family":"Wilzbach","given":"M.A.","affiliations":[],"preferred":false,"id":424736,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029868,"text":"70029868 - 2007 - Field-derived relationships for flow velocity and resistance in high-gradient streams","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70029868","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Field-derived relationships for flow velocity and resistance in high-gradient streams","docAbstract":"We measured velocity and channel geometry in 10 reaches (bed gradient = 0.08-0.21) of a predominantly step-pool channel, the Rio Cordon, Italy, over a range of discharges (3-80% of the bankfull discharge). The resulting data were used to compute flow resistance. At-a-station hydraulic geometry relations indicate that in most reaches, the exponent describing the rate of velocity increases with discharge was between 0.48 and 0.6, which is within the range of published values for pool-riffle channels. The Rio Cordon data are also combined with published hydraulics data from step-pool streams to explore non-dimensional relationships between velocity and flow resistance and factors including unit discharge, channel gradient, and step geometry. Multiple regression analysis of this combined field dataset indicated that dimensionless unit discharge (q*) is the most important independent variable overall in explaining variations in velocity and flow resistance, followed by channel slope and the ratio of step height to step length. Empirical equations are provided both for dimensionless velocity and flow resistance, but prediction of the former variable appears more reliable. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2007.03.021","issn":"00221694","usgsCitation":"Comiti, F., Mao, L., Wilcox, A., Wohl, E., and Lenzi, M., 2007, Field-derived relationships for flow velocity and resistance in high-gradient streams: Journal of Hydrology, v. 340, no. 1-2, p. 48-62, https://doi.org/10.1016/j.jhydrol.2007.03.021.","startPage":"48","endPage":"62","numberOfPages":"15","costCenters":[],"links":[{"id":212745,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2007.03.021"},{"id":240281,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"340","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0feee4b0c8380cd53a86","contributors":{"authors":[{"text":"Comiti, F.","contributorId":82130,"corporation":false,"usgs":true,"family":"Comiti","given":"F.","email":"","affiliations":[],"preferred":false,"id":424658,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mao, L.","contributorId":64894,"corporation":false,"usgs":true,"family":"Mao","given":"L.","email":"","affiliations":[],"preferred":false,"id":424657,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wilcox, A.","contributorId":62834,"corporation":false,"usgs":true,"family":"Wilcox","given":"A.","email":"","affiliations":[],"preferred":false,"id":424655,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wohl, E.E. 0000-0001-7435-5013","orcid":"https://orcid.org/0000-0001-7435-5013","contributorId":28753,"corporation":false,"usgs":true,"family":"Wohl","given":"E.E.","affiliations":[],"preferred":false,"id":424654,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lenzi, M.A.","contributorId":63622,"corporation":false,"usgs":true,"family":"Lenzi","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":424656,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029885,"text":"70029885 - 2007 - Stress before and after the 2002 Denali fault earthquake","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029885","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Stress before and after the 2002 Denali fault earthquake","docAbstract":"Spatially averaged, absolute deviatoric stress tensors along the faults ruptured during the 2002 Denali fault earthquake, both before and after the event, are derived, using a new method, from estimates of the orientations of the principal stresses and the stress change associated with the earthquake. Stresses are estimated in three regions along the Denali fault, one of which also includes the Susitna Glacier fault, and one region along the Totschunda fault. Estimates of the spatially averaged shear stress before the earthquake resolved onto the faults that ruptured during the event range from near 1 MPa to near 4 MPa. Shear stresses estimated along the faults in all these regions after the event are near zero (0 ?? 1 MPa). These results suggest that deviatoric stresses averaged over a few tens of km along strike are low, and that the stress drop during the earthquake was complete or nearly so.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Research Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2007GL029189","issn":"00948276","usgsCitation":"Wesson, R.L., and Boyd, O., 2007, Stress before and after the 2002 Denali fault earthquake: Geophysical Research Letters, v. 34, no. 7, https://doi.org/10.1029/2007GL029189.","costCenters":[],"links":[{"id":477250,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2007gl029189","text":"Publisher Index Page"},{"id":212953,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2007GL029189"},{"id":240523,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"7","noUsgsAuthors":false,"publicationDate":"2007-04-10","publicationStatus":"PW","scienceBaseUri":"505b9b51e4b08c986b31cdd3","contributors":{"authors":[{"text":"Wesson, R. L.","contributorId":51752,"corporation":false,"usgs":true,"family":"Wesson","given":"R.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":424734,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Boyd, O.S.","contributorId":74479,"corporation":false,"usgs":true,"family":"Boyd","given":"O.S.","email":"","affiliations":[],"preferred":false,"id":424735,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029906,"text":"70029906 - 2007 - Relative influence of streamflows in assessing temporal variability in stream habitat","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70029906","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Relative influence of streamflows in assessing temporal variability in stream habitat","docAbstract":"The effects of streamflows on temporal variation in stream habitat were analyzed from the data collected 6-11 years apart at 38 sites across the United States. Multiple linear regression was used to assess the variation in habitat caused by streamflow at the time of sampling and high flows between sampling. In addition to flow variables, the model also contained geomorphic and land use factors. The regression model was statistically significant (p < 0.05; R 2 = 0.31-0.46) for 5 of 14 habitat variables: mean wetted stream depth, mean bankfull depth, mean wetted stream width, coefficient of variation of wetted stream width, and the percent frequency of bank erosion. High flows between samples accounted for about 16% of the total variation in the frequency of bank erosion. Streamflow at the time of sampling was the main source of variation in mean stream depth and contributed to the variation in mean stream width and the frequency of bank erosion. Urban land use (population change) accounted for over 20% of the total variation in mean bankfull depth, 15% of the total variation in the coefficient of variation of stream width, and about 10% of the variation in mean stream width. ?? 2007 American Water Resources Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the American Water Resources Association","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1752-1688.2007.00051.x","issn":"1093474X","usgsCitation":"Goldstein, R.M., Meador, M.R., and Ruhl, K., 2007, Relative influence of streamflows in assessing temporal variability in stream habitat: Journal of the American Water Resources Association, v. 43, no. 3, p. 642-650, https://doi.org/10.1111/j.1752-1688.2007.00051.x.","startPage":"642","endPage":"650","numberOfPages":"9","costCenters":[],"links":[{"id":240354,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212810,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2007.00051.x"}],"volume":"43","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-05-07","publicationStatus":"PW","scienceBaseUri":"505aa68ce4b0c8380cd84ef6","contributors":{"authors":[{"text":"Goldstein, R. M.","contributorId":98305,"corporation":false,"usgs":true,"family":"Goldstein","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":424849,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Meador, M. R.","contributorId":74400,"corporation":false,"usgs":true,"family":"Meador","given":"M.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":424847,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ruhl, K.E.","contributorId":92869,"corporation":false,"usgs":true,"family":"Ruhl","given":"K.E.","email":"","affiliations":[],"preferred":false,"id":424848,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029904,"text":"70029904 - 2007 - Assessment of exploration bias in data-driven predictive models and the estimation of undiscovered resources","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70029904","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2832,"text":"Natural Resources Research","onlineIssn":"1573-8981","printIssn":"1520-7439","active":true,"publicationSubtype":{"id":10}},"title":"Assessment of exploration bias in data-driven predictive models and the estimation of undiscovered resources","docAbstract":"The spatial distribution of discovered resources may not fully mimic the distribution of all such resources, discovered and undiscovered, because the process of discovery is biased by accessibility factors (e.g., outcrops, roads, and lakes) and by exploration criteria. In data-driven predictive models, the use of training sites (resource occurrences) biased by exploration criteria and accessibility does not necessarily translate to a biased predictive map. However, problems occur when evidence layers correlate with these same exploration factors. These biases then can produce a data-driven model that predicts known occurrences well, but poorly predicts undiscovered resources. Statistical assessment of correlation between evidence layers and map-based exploration factors is difficult because it is difficult to quantify the \"degree of exploration.\" However, if such a degree-of-exploration map can be produced, the benefits can be enormous. Not only does it become possible to assess this correlation, but it becomes possible to predict undiscovered, instead of discovered, resources. Using geothermal systems in Nevada, USA, as an example, a degree-of-exploration model is created, which then is resolved into purely explored and unexplored equivalents, each occurring within coextensive study areas. A weights-of-evidence (WofE) model is built first without regard to the degree of exploration, and then a revised WofE model is calculated for the \"explored fraction\" only. Differences in the weights between the two models provide a correlation measure between the evidence and the degree of exploration. The data used to build the geothermal evidence layers are perceived to be independent of degree of exploration. Nevertheless, the evidence layers correlate with exploration because exploration has preferred the same favorable areas identified by the evidence patterns. In this circumstance, however, the weights for the \"explored\" WofE model minimize this bias. Using these revised weights, posterior probability is extrapolated into unexplored areas to estimate undiscovered deposits. ?? International Association for Mathematical Geology 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Natural Resources Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s11053-007-9037-6","issn":"15207439","usgsCitation":"Coolbaugh, M., Raines, G.L., and Zehner, R.E., 2007, Assessment of exploration bias in data-driven predictive models and the estimation of undiscovered resources: Natural Resources Research, v. 16, no. 2, p. 199-207, https://doi.org/10.1007/s11053-007-9037-6.","startPage":"199","endPage":"207","numberOfPages":"9","costCenters":[],"links":[{"id":212780,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11053-007-9037-6"},{"id":240318,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"16","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-05-16","publicationStatus":"PW","scienceBaseUri":"5059ee2ee4b0c8380cd49beb","contributors":{"authors":[{"text":"Coolbaugh, M.F.","contributorId":55034,"corporation":false,"usgs":true,"family":"Coolbaugh","given":"M.F.","affiliations":[],"preferred":false,"id":424841,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Raines, G. L.","contributorId":90720,"corporation":false,"usgs":true,"family":"Raines","given":"G.","middleInitial":"L.","affiliations":[],"preferred":false,"id":424843,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zehner, R. E.","contributorId":67933,"corporation":false,"usgs":true,"family":"Zehner","given":"R.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":424842,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029908,"text":"70029908 - 2007 - Arsenic incorporation into authigenic pyrite, Bengal Basin sediment, Bangladesh","interactions":[],"lastModifiedDate":"2023-08-09T11:24:51.739136","indexId":"70029908","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Arsenic incorporation into authigenic pyrite, Bengal Basin sediment, Bangladesh","docAbstract":"<div id=\"abstracts\" class=\"Abstracts u-font-gulliver text-s\"><div id=\"aep-abstract-id20\" class=\"abstract author\" lang=\"en\"><div id=\"aep-abstract-sec-id21\"><p>Sediment from two deep boreholes (∼400&nbsp;m) approximately 90&nbsp;km apart in southern Bangladesh was analyzed by X-ray absorption spectroscopy (XAS), total chemical analyses, chemical extractions, and electron probe microanalysis to establish the importance of authigenic pyrite as a sink for arsenic in the Bengal Basin. Authigenic framboidal and massive pyrite (median values 1500 and 3200&nbsp;ppm As, respectively), is the principal arsenic residence in sediment from both boreholes. Although pyrite is dominant, ferric oxyhydroxides and secondary iron phases contain a large fraction of the sediment-bound arsenic between approximately 20 and 100&nbsp;m, which is the depth range of wells containing the greatest amount of dissolved arsenic. The lack of pyrite in this interval is attributed to rapid sediment deposition and a low sulfur flux from riverine and atmospheric sources. The ability of deeper aquifers (&gt;150&nbsp;m) to produce ground water with low dissolved arsenic in southern Bangladesh reflects adequate sulfur supplies and sufficient time to redistribute the arsenic into pyrite during diagenesis.</p></div></div></div>","language":"English","publisher":"Elsevier","doi":"10.1016/j.gca.2007.03.022","issn":"00167037","usgsCitation":"Lowers, H., Breit, G.N., Foster, A.L., Whitney, J.W., Yount, J., Uddin, N., and Muneem, A.A., 2007, Arsenic incorporation into authigenic pyrite, Bengal Basin sediment, Bangladesh: Geochimica et Cosmochimica Acta, v. 71, no. 11, p. 2699-2717, https://doi.org/10.1016/j.gca.2007.03.022.","productDescription":"19 p.","startPage":"2699","endPage":"2717","costCenters":[],"links":[{"id":240356,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Bangladesh","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[92.67272,22.04124],[92.65226,21.32405],[92.30323,21.47549],[92.36855,20.67088],[92.08289,21.1922],[92.02522,21.70157],[91.83489,22.18294],[91.41709,22.76502],[90.49601,22.80502],[90.58696,22.39279],[90.27297,21.83637],[89.84747,22.03915],[89.70205,21.85712],[89.41886,21.96618],[89.03196,22.05571],[88.87631,22.87915],[88.52977,23.63114],[88.69994,24.23371],[88.08442,24.50166],[88.30637,24.86608],[88.93155,25.23869],[88.20979,25.76807],[88.56305,26.44653],[89.35509,26.01441],[89.83248,25.96508],[89.92069,25.26975],[90.87221,25.1326],[91.7996,25.14743],[92.3762,24.97669],[91.91509,24.13041],[91.46773,24.07264],[91.15896,23.50353],[91.70648,22.98526],[91.86993,23.62435],[92.14603,23.6275],[92.67272,22.04124]]]},\"properties\":{\"name\":\"Bangladesh\"}}]}","volume":"71","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ed95e4b0c8380cd498be","contributors":{"authors":[{"text":"Lowers, Heather A. hlowers@usgs.gov","contributorId":149265,"corporation":false,"usgs":true,"family":"Lowers","given":"Heather A.","email":"hlowers@usgs.gov","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":424855,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Breit, George N. 0000-0003-2188-6798 gbreit@usgs.gov","orcid":"https://orcid.org/0000-0003-2188-6798","contributorId":1480,"corporation":false,"usgs":true,"family":"Breit","given":"George","email":"gbreit@usgs.gov","middleInitial":"N.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true},{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":424857,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Foster, Andrea L. 0000-0003-1362-0068 afoster@usgs.gov","orcid":"https://orcid.org/0000-0003-1362-0068","contributorId":1740,"corporation":false,"usgs":true,"family":"Foster","given":"Andrea","email":"afoster@usgs.gov","middleInitial":"L.","affiliations":[{"id":662,"text":"Western Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":424853,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Whitney, John W. 0000-0003-3824-3692 jwhitney@usgs.gov","orcid":"https://orcid.org/0000-0003-3824-3692","contributorId":804,"corporation":false,"usgs":true,"family":"Whitney","given":"John","email":"jwhitney@usgs.gov","middleInitial":"W.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":424856,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Yount, James","contributorId":65172,"corporation":false,"usgs":true,"family":"Yount","given":"James","affiliations":[],"preferred":false,"id":424854,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Uddin, Nehal","contributorId":60721,"corporation":false,"usgs":true,"family":"Uddin","given":"Nehal","email":"","affiliations":[],"preferred":false,"id":424852,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Muneem, Ad. Atual","contributorId":49873,"corporation":false,"usgs":true,"family":"Muneem","given":"Ad.","email":"","middleInitial":"Atual","affiliations":[],"preferred":false,"id":424858,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70029903,"text":"70029903 - 2007 - Prey resources before spawning influence gonadal investment of female, but not male, white crappie","interactions":[],"lastModifiedDate":"2016-05-02T09:26:26","indexId":"70029903","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2285,"text":"Journal of Fish Biology","active":true,"publicationSubtype":{"id":10}},"title":"Prey resources before spawning influence gonadal investment of female, but not male, white crappie","docAbstract":"<p><span>In this study, an outdoor pool experiment was used to evaluate the effect of prey resources during 4 months before spawning on the gonadal investments of male and female white crappie&nbsp;</span><i>Pomoxis annularis</i><span>, a popular freshwater sportfish that exhibits erratic recruitment. Fish were assigned one of three feeding treatments: starved, fed once every 5 days (intermediate) or fed daily (high). All measurements of male testes (</span><i>i.e.</i><span>&nbsp;wet mass, energy density and spermatocrit) were similar across treatments. Conversely, high-fed females produced larger ovaries than those of intermediate-fed and starved fish, and invested more energy in their ovaries than starved fish. Compared to pre-experiment fish, starved and intermediate-fed females appeared to increase their ovary size by relying on liver energy stores (&lsquo;capital&rsquo; spawning). Conversely, high-fed females increased liver and gonad mass, implying an &lsquo;income&rsquo;-spawning strategy (where gonads are built from recently acquired energy). Fecundity did not differ among treatments, but high-fed fish built larger eggs than those starved. Females rarely &lsquo;skipped&rsquo; spawning opportunities when prey resources were low, as only 8% of starved females and 8% of intermediate-fed females lacked vitellogenic eggs. These results suggest that limited prey resources during the months before spawning can limit ovary production, which, in turn, can limit reproductive success of white crappies.</span></p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1095-8649.2007.01459.x","issn":"00221112","usgsCitation":"Bunnell, D., Thomas, S., and Stein, R., 2007, Prey resources before spawning influence gonadal investment of female, but not male, white crappie: Journal of Fish Biology, v. 70, no. 6, p. 1838-1854, https://doi.org/10.1111/j.1095-8649.2007.01459.x.","productDescription":"17 p.","startPage":"1838","endPage":"1854","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":477120,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://hdl.handle.net/1811/44508","text":"External Repository"},{"id":240284,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212748,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1095-8649.2007.01459.x"}],"volume":"70","issue":"6","noUsgsAuthors":false,"publicationDate":"2007-05-23","publicationStatus":"PW","scienceBaseUri":"505a8b82e4b0c8380cd7e281","contributors":{"authors":[{"text":"Bunnell, D.B.","contributorId":8610,"corporation":false,"usgs":true,"family":"Bunnell","given":"D.B.","affiliations":[],"preferred":false,"id":424838,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thomas, S.E.","contributorId":10622,"corporation":false,"usgs":true,"family":"Thomas","given":"S.E.","email":"","affiliations":[],"preferred":false,"id":424839,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stein, R.A.","contributorId":43893,"corporation":false,"usgs":true,"family":"Stein","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":424840,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029900,"text":"70029900 - 2007 - Extraction of near-surface properties for a lossy layered medium using the propagator matrix","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70029900","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1803,"text":"Geophysical Journal International","active":true,"publicationSubtype":{"id":10}},"title":"Extraction of near-surface properties for a lossy layered medium using the propagator matrix","docAbstract":"Near-surface properties play an important role in advancing earthquake hazard assessment. Other areas where near-surface properties are crucial include civil engineering and detection and delineation of potable groundwater. From an exploration point of view, near-surface properties are needed for wavefield separation and correcting for the local near-receiver structure. It has been shown that these properties can be estimated for a lossless homogeneous medium using the propagator matrix. To estimate the near-surface properties, we apply deconvolution to passive borehole recordings of waves excited by an earthquake. Deconvolution of these incoherent waveforms recorded by the sensors at different depths in the borehole with the recording at the surface results in waves that propagate upwards and downwards along the array. These waves, obtained by deconvolution, can be used to estimate the P- and S-wave velocities near the surface. As opposed to waves obtained by cross-correlation that represent filtered version of the sum of causal and acausal Green's function between the two receivers, the waves obtained by deconvolution represent the elements of the propagator matrix. Finally, we show analytically the extension of the propagator matrix analysis to a lossy layered medium for a special case of normal incidence. ?? 2007 The Authors Journal compilation ?? 2007 RAS.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Journal International","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1365-246X.2006.03303.x","issn":"0956540X","usgsCitation":"Mehta, K., Snieder, R., and Graizer, V., 2007, Extraction of near-surface properties for a lossy layered medium using the propagator matrix: Geophysical Journal International, v. 169, no. 1, p. 271-280, https://doi.org/10.1111/j.1365-246X.2006.03303.x.","startPage":"271","endPage":"280","numberOfPages":"10","costCenters":[],"links":[{"id":477275,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1365-246x.2006.03303.x","text":"Publisher Index Page"},{"id":212721,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-246X.2006.03303.x"},{"id":240249,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"169","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0e60e4b0c8380cd53409","contributors":{"authors":[{"text":"Mehta, K.","contributorId":60440,"corporation":false,"usgs":true,"family":"Mehta","given":"K.","email":"","affiliations":[],"preferred":false,"id":424823,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Snieder, R.","contributorId":63924,"corporation":false,"usgs":true,"family":"Snieder","given":"R.","email":"","affiliations":[],"preferred":false,"id":424824,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Graizer, V.","contributorId":88930,"corporation":false,"usgs":true,"family":"Graizer","given":"V.","email":"","affiliations":[],"preferred":false,"id":424825,"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}]}}
,{"id":70029884,"text":"70029884 - 2007 - Fractal topography and subsurface water flows from fluvial bedforms to the continental shield","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029884","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Fractal topography and subsurface water flows from fluvial bedforms to the continental shield","docAbstract":"Surface-subsurface flow interactions are critical to a wide range of geochemical and ecological processes and to the fate of contaminants in freshwater environments. Fractal scaling relationships have been found in distributions of both land surface topography and solute efflux from watersheds, but the linkage between those observations has not been realized. We show that the fractal nature of the land surface in fluvial and glacial systems produces fractal distributions of recharge, discharge, and associated subsurface flow patterns. Interfacial flux tends to be dominated by small-scale features while the flux through deeper subsurface flow paths tends to be controlled by larger-scale features. This scaling behavior holds at all scales, from small fluvial bedforms (tens of centimeters) to the continental landscape (hundreds of kilometers). The fractal nature of surface-subsurface water fluxes yields a single scale-independent distribution of subsurface water residence times for both near-surface fluvial systems and deeper hydrogeological flows. Copyright 2007 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Research Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2007GL029426","issn":"00948276","usgsCitation":"Worman, A., Packman, A., Marklund, L., Harvey, J., and Stone, S., 2007, Fractal topography and subsurface water flows from fluvial bedforms to the continental shield: Geophysical Research Letters, v. 34, no. 7, https://doi.org/10.1029/2007GL029426.","costCenters":[],"links":[{"id":212952,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2007GL029426"},{"id":240522,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"7","noUsgsAuthors":false,"publicationDate":"2007-04-04","publicationStatus":"PW","scienceBaseUri":"505a13a5e4b0c8380cd5470b","contributors":{"authors":[{"text":"Worman, A.","contributorId":105534,"corporation":false,"usgs":true,"family":"Worman","given":"A.","email":"","affiliations":[],"preferred":false,"id":424733,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Packman, A.I.","contributorId":37539,"corporation":false,"usgs":true,"family":"Packman","given":"A.I.","email":"","affiliations":[],"preferred":false,"id":424729,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Marklund, L.","contributorId":69786,"corporation":false,"usgs":true,"family":"Marklund","given":"L.","affiliations":[],"preferred":false,"id":424732,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Harvey, J. W. 0000-0002-2654-9873","orcid":"https://orcid.org/0000-0002-2654-9873","contributorId":39725,"corporation":false,"usgs":true,"family":"Harvey","given":"J. W.","affiliations":[],"preferred":false,"id":424730,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Stone, S.H.","contributorId":48763,"corporation":false,"usgs":true,"family":"Stone","given":"S.H.","email":"","affiliations":[],"preferred":false,"id":424731,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029883,"text":"70029883 - 2007 - Geochemical proxies of North American freshwater routing during the Younger Dryas cold event","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029883","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3165,"text":"Proceedings of the National Academy of Sciences of the United States of America","active":true,"publicationSubtype":{"id":10}},"title":"Geochemical proxies of North American freshwater routing during the Younger Dryas cold event","docAbstract":"The Younger Dryas cold interval represents a time when much of the Northern Hemisphere cooled from ???12.9 to 11.5 kiloyears B.P. The cause of this event, which has long been viewed as the canonical example of abrupt climate change, was initially attributed to the routing of freshwater to the St. Lawrence River with an attendant reduction in Atlantic meridional overturning circulation. However, this mechanism has recently been questioned because current proxies and dating techniques have been unable to confirm that eastward routing with an increase in freshwater flux occurred during the Younger Dryas. Here we use new geochemical proxies (??Mg/Ca, U/Ca, and 87Sr/86Sr) measured in planktonic foraminifera at the mouth of the St. Lawrence estuary as tracers of freshwater sources to further evaluate this question. Our proxies, combined with planktonic ??18Oseawater and ??13C, confirm that routing of runoff from western Canada to the St. Lawrence River occurred at the start of the Younger Dryas, with an attendant increase in freshwater flux of 0.06 ?? 0.02 Sverdrup (1 Sverdrup = 106 m3??s-1). This base discharge increase is sufficient to have reduced Atlantic meridional overturning circulation and caused the Younger Dryas cold interval. In addition, our data indicate subsequent fluctuations in the freshwater flux to the St. Lawrence River of ???0.06-0.12 Sverdrup, thus explaining the variability in the overturning circulation and climate during the Younger Dryas. ?? 2007 by The National Academy of Sciences of the USA.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Proceedings of the National Academy of Sciences of the United States of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1073/pnas.0611313104","issn":"00278424","usgsCitation":"Carlson, A., Clark, P., Haley, B., Klinkhammer, G., Simmons, K., Brook, E., and Meissner, K.J., 2007, Geochemical proxies of North American freshwater routing during the Younger Dryas cold event: Proceedings of the National Academy of Sciences of the United States of America, v. 104, no. 16, p. 6556-6561, https://doi.org/10.1073/pnas.0611313104.","startPage":"6556","endPage":"6561","numberOfPages":"6","costCenters":[],"links":[{"id":477060,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://doi.org/10.1073/pnas.0611313104","text":"External Repository"},{"id":212924,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1073/pnas.0611313104"},{"id":240491,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"104","issue":"16","noUsgsAuthors":false,"publicationDate":"2007-04-17","publicationStatus":"PW","scienceBaseUri":"505a1696e4b0c8380cd551d4","contributors":{"authors":[{"text":"Carlson, A.E.","contributorId":54825,"corporation":false,"usgs":true,"family":"Carlson","given":"A.E.","email":"","affiliations":[],"preferred":false,"id":424725,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Clark, P.U.","contributorId":78449,"corporation":false,"usgs":true,"family":"Clark","given":"P.U.","email":"","affiliations":[],"preferred":false,"id":424727,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Haley, B.A.","contributorId":52047,"corporation":false,"usgs":true,"family":"Haley","given":"B.A.","email":"","affiliations":[],"preferred":false,"id":424724,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Klinkhammer, G.P.","contributorId":86232,"corporation":false,"usgs":true,"family":"Klinkhammer","given":"G.P.","email":"","affiliations":[],"preferred":false,"id":424728,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Simmons, K.","contributorId":75333,"corporation":false,"usgs":true,"family":"Simmons","given":"K.","affiliations":[],"preferred":false,"id":424726,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Brook, E.J.","contributorId":23292,"corporation":false,"usgs":true,"family":"Brook","given":"E.J.","email":"","affiliations":[],"preferred":false,"id":424722,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Meissner, K. J.","contributorId":29704,"corporation":false,"usgs":false,"family":"Meissner","given":"K.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":424723,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70029881,"text":"70029881 - 2007 - Characterization of suspended particles in Everglades wetlands","interactions":[],"lastModifiedDate":"2018-10-16T11:02:45","indexId":"70029881","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2620,"text":"Limnology and Oceanography","active":true,"publicationSubtype":{"id":10}},"title":"Characterization of suspended particles in Everglades wetlands","docAbstract":"<p><span>We report the concentration, phosphorus (P) and nitrogen (N) content, and size and chemical fractionation of fine suspended particles (0.2‐100 µm) and colloids (3 kilodalton [kDa]‐0.1 µm) in the surface water of Everglades wetlands along regional and P‐enrichment gradients. Total suspended sediment concentrations ranged from 0.7 to 2.7 mg L</span><sup>−1</sup><span>. Total particulate P concentrations increased from 0.05 µmol L21 to 0.31 µmol L</span><sup>−1</sup><span>along the Penrichment gradient. Particles contained from 20% to 43% of total P but &lt;12% of total N in surface water. Dissolved (&lt;0.2 µm) organic N contained about 90% of total N, with the 3‐100‐kDa colloidal size class containing the most N of any size class. The 0.45‐2.7‐µm size fraction held the most particulate P at all sites, whereas particulate N was most abundant in the 2.7‐10‐µm size class at most sites. Standard chemical fractionation of particles identified acid‐hydrolyzable P as the most abundant species of particulate P, with little reactive or refractory organic P. Sequential chemical extraction revealed that about 65% of total particulate P was microbial, while about 25% was associated with humic and fulvic organic matter. The size and chemical fractionation information suggested that P‐rich particles mostly consisted of suspended bacteria. Suspended particles in Everglades wetlands were small in size and had low concentrations, yet they stored a large proportion of surface‐water P in intermediately reactive forms, but they held little N.</span></p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Limnology and Oceanography","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.4319/lo.2007.52.3.1166","issn":"00243590","usgsCitation":"Noe, G., Harvey, J.W., and Saiers, J.E., 2007, Characterization of suspended particles in Everglades wetlands: Limnology and Oceanography, v. 52, no. 3, p. 1166-1178, https://doi.org/10.4319/lo.2007.52.3.1166.","productDescription":"13 p.","startPage":"1166","endPage":"1178","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":477128,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.715.2908","text":"External Repository"},{"id":240457,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":265987,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.4319/lo.2007.52.3.1166"}],"country":"United States","state":"Florida","otherGeospatial":"Everglades wetlands","volume":"52","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-05-17","publicationStatus":"PW","scienceBaseUri":"5059f4dfe4b0c8380cd4bf8c","contributors":{"authors":[{"text":"Noe, Gregory B. 0000-0002-6661-2646 gnoe@usgs.gov","orcid":"https://orcid.org/0000-0002-6661-2646","contributorId":2332,"corporation":false,"usgs":true,"family":"Noe","given":"Gregory","email":"gnoe@usgs.gov","middleInitial":"B.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":false,"id":424717,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harvey, Judson W. 0000-0002-2654-9873 jwharvey@usgs.gov","orcid":"https://orcid.org/0000-0002-2654-9873","contributorId":1796,"corporation":false,"usgs":true,"family":"Harvey","given":"Judson","email":"jwharvey@usgs.gov","middleInitial":"W.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":424715,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Saiers, James E.","contributorId":191842,"corporation":false,"usgs":false,"family":"Saiers","given":"James","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":424716,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029880,"text":"70029880 - 2007 - In situ hydrogen consumption kinetics as an indicator of subsurface microbial activity","interactions":[],"lastModifiedDate":"2018-10-17T12:44:23","indexId":"70029880","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1619,"text":"FEMS Microbiology Ecology","onlineIssn":"1574-6941","printIssn":"0168-6496","active":true,"publicationSubtype":{"id":10}},"title":"In situ hydrogen consumption kinetics as an indicator of subsurface microbial activity","docAbstract":"<p>There are few methods available for broadly assessing microbial community metabolism directly within a groundwater environment. In this study, hydrogen consumption rates were estimated from in situ injection/withdrawal tests conducted in two geochemically varying, contaminated aquifers as an approach towards developing such a method. The hydrogen consumption first-order rates varied from 0.002 nM h-1 for an uncontaminated, aerobic site to 2.5 nM h-1 for a contaminated site where sulfate reduction was a predominant process. The method could accommodate the over three orders of magnitude range in rates that existed between subsurface sites. In a denitrifying zone, the hydrogen consumption rate (0.02 nM h-1) was immediately abolished in the presence of air or an antibiotic mixture, suggesting that such measurements may also be sensitive to the effects of environmental perturbations on field microbial activities. Comparable laboratory determinations with sediment slurries exhibited hydrogen consumption kinetics that differed substantially from the field estimates. Because anaerobic degradation of organic matter relies on the rapid consumption of hydrogen and subsequent maintenance at low levels, such in situ measures of hydrogen turnover can serve as a key indicator of the functioning of microbial food webs and may be more reliable than laboratory determinations.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"FEMS Microbiology Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1574-6941.2007.00286.x","issn":"01686496","usgsCitation":"Harris, S., Smith, R.L., and Suflita, J.M., 2007, In situ hydrogen consumption kinetics as an indicator of subsurface microbial activity: FEMS Microbiology Ecology, v. 60, no. 2, p. 220-228, https://doi.org/10.1111/j.1574-6941.2007.00286.x.","productDescription":"9 p.","startPage":"220","endPage":"228","numberOfPages":"9","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":487621,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1574-6941.2007.00286.x","text":"Publisher Index Page"},{"id":212892,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1574-6941.2007.00286.x"},{"id":240456,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"60","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a39a4e4b0c8380cd619b7","contributors":{"authors":[{"text":"Harris, S.H.","contributorId":10950,"corporation":false,"usgs":true,"family":"Harris","given":"S.H.","email":"","affiliations":[],"preferred":false,"id":424712,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, Richard L. 0000-0002-3829-0125 rlsmith@usgs.gov","orcid":"https://orcid.org/0000-0002-3829-0125","contributorId":1592,"corporation":false,"usgs":true,"family":"Smith","given":"Richard","email":"rlsmith@usgs.gov","middleInitial":"L.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":38175,"text":"Toxics Substances Hydrology Program","active":true,"usgs":true}],"preferred":true,"id":424714,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Suflita, Joseph M.","contributorId":187604,"corporation":false,"usgs":false,"family":"Suflita","given":"Joseph","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":424713,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029871,"text":"70029871 - 2007 - Impacts of a gape limited Brook Trout, Salvelinus fontinalis, on larval Northwestern salamander, Ambystoma gracile, growth: A field enclosure experiment","interactions":[],"lastModifiedDate":"2017-11-15T13:31:32","indexId":"70029871","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2334,"text":"Journal of Herpetology","active":true,"publicationSubtype":{"id":10}},"title":"Impacts of a gape limited Brook Trout, Salvelinus fontinalis, on larval Northwestern salamander, Ambystoma gracile, growth: A field enclosure experiment","docAbstract":"The formation of amphibian population structure is directly affected by predation. Although aquatic predators have been shown to have direct negative effects on larval salamanders in laboratory and field experiments, the potential impacts of gape-limited fish on larval salamander growth has been largely underexplored. We designed an enclosure experiment conducted in situ to quantify the effects of gape-limited Brook Trout (Salvelinus fontinalis) on larval Northwestern Salamander (Ambystoma gracile) growth. We specifically tested whether the presence of fish too small to consume larvae had a negative effect on larval growth. The results of this study indicate that the presence of a gape-limited S. fontinalis can have a negative effect on growth of larval A. gracile salamanders. Copyright 2007 Society for the Study of Amphibians and Reptiles.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Herpetology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1670/0022-1511(2007)41[321:IOAGLB]2.0.CO;2","issn":"00221511","usgsCitation":"Currens, C., Liss, W., and Hoffman, R., 2007, Impacts of a gape limited Brook Trout, Salvelinus fontinalis, on larval Northwestern salamander, Ambystoma gracile, growth: A field enclosure experiment: Journal of Herpetology, v. 41, no. 2, p. 321-324, https://doi.org/10.1670/0022-1511(2007)41[321:IOAGLB]2.0.CO;2.","startPage":"321","endPage":"324","numberOfPages":"4","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":240317,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212779,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1670/0022-1511(2007)41[321:IOAGLB]2.0.CO;2"}],"volume":"41","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a38dfe4b0c8380cd61700","contributors":{"authors":[{"text":"Currens, C.R.","contributorId":10364,"corporation":false,"usgs":true,"family":"Currens","given":"C.R.","email":"","affiliations":[],"preferred":false,"id":424672,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Liss, W.J.","contributorId":75887,"corporation":false,"usgs":true,"family":"Liss","given":"W.J.","email":"","affiliations":[],"preferred":false,"id":424674,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hoffman, R.L.","contributorId":28778,"corporation":false,"usgs":true,"family":"Hoffman","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":424673,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029878,"text":"70029878 - 2007 - Development and implementation of a Bayesian-based aquifer vulnerability assessment in Florida","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029878","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2832,"text":"Natural Resources Research","onlineIssn":"1573-8981","printIssn":"1520-7439","active":true,"publicationSubtype":{"id":10}},"title":"Development and implementation of a Bayesian-based aquifer vulnerability assessment in Florida","docAbstract":"The Florida Aquifer Vulnerability Assessment (FAVA) was designed to provide a tool for environmental, regulatory, resource management, and planning professionals to facilitate protection of groundwater resources from surface sources of contamination. The FAVA project implements weights-of-evidence (WofE), a data-driven, Bayesian-probabilistic model to generate a series of maps reflecting relative aquifer vulnerability of Florida's principal aquifer systems. The vulnerability assessment process, from project design to map implementation is described herein in reference to the Floridan aquifer system (FAS). The WofE model calculates weighted relationships between hydrogeologic data layers that influence aquifer vulnerability and ambient groundwater parameters in wells that reflect relative degrees of vulnerability. Statewide model input data layers (evidential themes) include soil hydraulic conductivity, density of karst features, thickness of aquifer confinement, and hydraulic head difference between the FAS and the watertable. Wells with median dissolved nitrogen concentrations exceeding statistically established thresholds serve as training points in the WofE model. The resulting vulnerability map (response theme) reflects classified posterior probabilities based on spatial relationships between the evidential themes and training points. The response theme is subjected to extensive sensitivity and validation testing. Among the model validation techniques is calculation of a response theme based on a different water-quality indicator of relative recharge or vulnerability: dissolved oxygen. Successful implementation of the FAVA maps was facilitated by the overall project design, which included a needs assessment and iterative technical advisory committee input and review. Ongoing programs to protect Florida's springsheds have led to development of larger-scale WofE-based vulnerability assessments. Additional applications of the maps include land-use planning amendments and prioritization of land purchases to protect groundwater resources. ?? International Association for Mathematical Geology 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Natural Resources Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s11053-007-9038-5","issn":"15207439","usgsCitation":"Arthur, J.D., Wood, H., Baker, A., Cichon, J., and Raines, G.L., 2007, Development and implementation of a Bayesian-based aquifer vulnerability assessment in Florida: Natural Resources Research, v. 16, no. 2, p. 93-107, https://doi.org/10.1007/s11053-007-9038-5.","startPage":"93","endPage":"107","numberOfPages":"15","costCenters":[],"links":[{"id":212867,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11053-007-9038-5"},{"id":240425,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"16","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-06-02","publicationStatus":"PW","scienceBaseUri":"505a0024e4b0c8380cd4f5ea","contributors":{"authors":[{"text":"Arthur, J. D.","contributorId":67924,"corporation":false,"usgs":true,"family":"Arthur","given":"J.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":424705,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wood, H.A.R.","contributorId":10623,"corporation":false,"usgs":true,"family":"Wood","given":"H.A.R.","email":"","affiliations":[],"preferred":false,"id":424703,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Baker, A.E.","contributorId":54022,"corporation":false,"usgs":true,"family":"Baker","given":"A.E.","email":"","affiliations":[],"preferred":false,"id":424704,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cichon, J.R.","contributorId":68115,"corporation":false,"usgs":true,"family":"Cichon","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":424706,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Raines, G. L.","contributorId":90720,"corporation":false,"usgs":true,"family":"Raines","given":"G.","middleInitial":"L.","affiliations":[],"preferred":false,"id":424707,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029847,"text":"70029847 - 2007 - Forensically important calliphoridae (diptera) associated with pig carrion in rural north-central Florida","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029847","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2385,"text":"Journal of Medical Entomology","active":true,"publicationSubtype":{"id":10}},"title":"Forensically important calliphoridae (diptera) associated with pig carrion in rural north-central Florida","docAbstract":"A study to determine the relative abundance and seasonality of forensically important blow flies (Diptera: Calliphoridae) in rural north-central Florida was conducted using pig carcasses (Sus scrofa L.) as models for human bodies. Seven species of Calliphoridae were collected: Lucilia coeruleiviridis (=Phoenicia) (Macquart), Cochliomyia macellaria (F.), Chrysomya rufifaces (Macquart), Phormia regina (Meigen), Chrysomya megacephala (F.), and a few specimens of Calliphora livida Hall, and Calliphora vicina Robineau-Desvoidy. Species composition in aerial collections of adult flies, preserved larval collections, and samples of larvae reared to the adult stage were all highly correlated. Relative abundance of the species found was significantly different, with L. coeruleiviridis the most abundant species year-round. The relative abundance of the collected species varied significantly by day of decomposition and by season, with significant interactions between season and day, season and species, and day and species. L. coeruleiviridis, C. macellaria, C. rufifaces, and P. regina were found during the entire year, two C. vicina specimens and 11 C. livida specimens were collected from December to March, whereas C. megacephala was collected only from June through September. ?? 2007 Entomological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Medical Entomology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1603/0022-2585(2007)44[509:FICDAW]2.0.CO;2","issn":"00222585","usgsCitation":"Gruner, S.V., Slone, D., and Capinera, J., 2007, Forensically important calliphoridae (diptera) associated with pig carrion in rural north-central Florida: Journal of Medical Entomology, v. 44, no. 3, p. 509-515, https://doi.org/10.1603/0022-2585(2007)44[509:FICDAW]2.0.CO;2.","startPage":"509","endPage":"515","numberOfPages":"7","costCenters":[],"links":[{"id":212891,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1603/0022-2585(2007)44[509:FICDAW]2.0.CO;2"},{"id":240454,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"44","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1322e4b0c8380cd54532","contributors":{"authors":[{"text":"Gruner, Susan V.","contributorId":99778,"corporation":false,"usgs":true,"family":"Gruner","given":"Susan","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":424573,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Slone, D. H. 0000-0002-9903-9727","orcid":"https://orcid.org/0000-0002-9903-9727","contributorId":33040,"corporation":false,"usgs":true,"family":"Slone","given":"D. H.","affiliations":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"preferred":true,"id":424571,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Capinera, J.L.","contributorId":38780,"corporation":false,"usgs":true,"family":"Capinera","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":424572,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029877,"text":"70029877 - 2007 - Mercury and selenium in American White Pelicans breeding at Pyramid Lake, Nevada","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029877","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3731,"text":"Waterbirds","onlineIssn":"19385390","printIssn":"15244695","active":true,"publicationSubtype":{"id":10}},"title":"Mercury and selenium in American White Pelicans breeding at Pyramid Lake, Nevada","docAbstract":"American White Pelicans (Pelecanus erythrorhynchos) that breed on Anaho Island, Pyramid Lake, Nevada, are potentially exposed to a variety of contaminants. Therefore, the reproductive success of this colony was monitored in 1996 and eggs, blood and feathers from nestlings, livers from adults and nestlings, regurgitated fish from nestlings, and fish from representative feeding areas were collected and analyzed for mercury and selenium to determine exposure to the pelicans and sources of contamination. Additional samples were collected and analyzed in 1988, 1992, and 2004. Reproductive success at the Anaho Island colony was normal in 1996 based on hatching rates of eggs (???75% in undisturbed areas) and survival of nestlings. Mercury and selenium concentrations in eggs were generally below known effect levels and did not appear to have an adverse impact on hatching success. Mercury and selenium concentrations in fish ranged widely, with mercury of greatest concern. Microscopic lesions characteristic of mercury toxicity were absent in pre-fledging nestlings in 1996. Some adult pelicans had elevated mercury concentrations in their livers; however, the potential toxic effects were difficult to evaluate because of probable demethylation of mercury, thereby possibly providing protection from toxicity. Exposure of pelicans to mercury varied among years, most likely in relation to wet-dry cycles and available feeding areas.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Waterbirds","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1675/1524-4695(2007)30[284:MASIAW]2.0.CO;2","issn":"15244695","usgsCitation":"Wiemeyer, S.N., Miesner, J., Tuttle, P.L., Murphy, E., Sileo, L., and Withers, D., 2007, Mercury and selenium in American White Pelicans breeding at Pyramid Lake, Nevada: Waterbirds, v. 30, no. 2, p. 284-295, https://doi.org/10.1675/1524-4695(2007)30[284:MASIAW]2.0.CO;2.","startPage":"284","endPage":"295","numberOfPages":"12","costCenters":[],"links":[{"id":212866,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1675/1524-4695(2007)30[284:MASIAW]2.0.CO;2"},{"id":240424,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"30","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a53e1e4b0c8380cd6cda2","contributors":{"authors":[{"text":"Wiemeyer, Stanley N.","contributorId":78279,"corporation":false,"usgs":true,"family":"Wiemeyer","given":"Stanley","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":424699,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miesner, J.F.","contributorId":79509,"corporation":false,"usgs":true,"family":"Miesner","given":"J.F.","email":"","affiliations":[],"preferred":false,"id":424700,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Tuttle, P. L.","contributorId":101280,"corporation":false,"usgs":true,"family":"Tuttle","given":"P.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":424702,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Murphy, E.C.","contributorId":86745,"corporation":false,"usgs":true,"family":"Murphy","given":"E.C.","email":"","affiliations":[],"preferred":false,"id":424701,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sileo, L.","contributorId":46895,"corporation":false,"usgs":true,"family":"Sileo","given":"L.","email":"","affiliations":[],"preferred":false,"id":424698,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Withers, D.","contributorId":19370,"corporation":false,"usgs":true,"family":"Withers","given":"D.","email":"","affiliations":[],"preferred":false,"id":424697,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70029875,"text":"70029875 - 2007 - High-resolution shallow reflection seismic image and surface evidence of the Upper Tiber Basin active faults (Northern Apennines, Italy)","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029875","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"High-resolution shallow reflection seismic image and surface evidence of the Upper Tiber Basin active faults (Northern Apennines, Italy)","docAbstract":"Shallow seismic reflection prospecting has been carried out in order to investigate the faults that bound to the southwest and northeast the Quaternary Upper Tiber Basin (Northern Apennines, Italy). On the northeastern margin of the basin a ??? 1 km long reflection seismic profile images a fault segment and the associated up to 100 meters thick sediment wedge. Across the southwestern margin a 0.5 km-long seismic profile images a 50-55??-dipping extensional fault, that projects to the scarp at the base of the range-front, and against which a 100 m thick syn-tectonic sediment wedge has formed. The integration of surface and sub-surface data allows to estimate at least 190 meters of vertical displacement along the fault and a slip rate around 0.25 m/kyr. Southwestern fault might also be interpreted as the main splay structure of regional Alto Tiberina extensional fault. At last, the 1917 Monterchi earthquake (Imax=X, Boschi et alii, 2000) is correlable with an activation of the southwestern fault, and thus suggesting the seismogenic character of this latter.","largerWorkTitle":"Bollettino della Societa Geologica Italiana","language":"English","issn":"00378763","usgsCitation":"Donne, D., Plccardi, L., Odum, J.K., Stephenson, W.J., and Williams, R.A., 2007, High-resolution shallow reflection seismic image and surface evidence of the Upper Tiber Basin active faults (Northern Apennines, Italy), <i>in</i> Bollettino della Societa Geologica Italiana, v. 126, no. 2, p. 323-331.","startPage":"323","endPage":"331","numberOfPages":"9","costCenters":[],"links":[{"id":240389,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"126","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3135e4b0c8380cd5dd17","contributors":{"authors":[{"text":"Donne, D.D.","contributorId":73075,"corporation":false,"usgs":true,"family":"Donne","given":"D.D.","email":"","affiliations":[],"preferred":false,"id":424691,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Plccardi, L.","contributorId":21833,"corporation":false,"usgs":true,"family":"Plccardi","given":"L.","email":"","affiliations":[],"preferred":false,"id":424690,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Odum, J. K.","contributorId":105705,"corporation":false,"usgs":true,"family":"Odum","given":"J.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":424694,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stephenson, W. J.","contributorId":87982,"corporation":false,"usgs":true,"family":"Stephenson","given":"W.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":424693,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Williams, R. A.","contributorId":82323,"corporation":false,"usgs":true,"family":"Williams","given":"R.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":424692,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029874,"text":"70029874 - 2007 - Competition between hardwood hammocks and mangroves","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029874","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1478,"text":"Ecosystems","active":true,"publicationSubtype":{"id":10}},"title":"Competition between hardwood hammocks and mangroves","docAbstract":"The boundaries between mangroves and freshwater hammocks in coastal ecotones of South Florida are sharp. Further, previous studies indicate that there is a discontinuity in plant predawn water potentials, with woody plants either showing predawn water potentials reflecting exposure to saline water or exposure to freshwater. This abrupt concurrent change in community type and plant water status suggests that there might be feedback dynamics between vegetation and salinity. A model examining the salinity of the aerated zone of soil overlying a saline body of water, known as the vadose layer, as a function of precipitation, evaporation and plant water uptake is presented here. The model predicts that mixtures of saline and freshwater vegetative species represent unstable states. Depending on the initial vegetation composition, subsequent vegetative change will lead either to patches of mangrove coverage having a high salinity vadose zone or to freshwater hammock coverage having a low salinity vadose zone. Complete or nearly complete coverage by either freshwater or saltwater vegetation represents two stable steady-state points. This model can explain many of the previous observations of vegetation patterns in coastal South Florida as well as observations on the dynamics of vegetation shifts caused by sea level rise and climate change. ?? 2007 Springer Science+Business Media, LLC.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecosystems","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10021-007-9050-y","issn":"14329840","usgsCitation":"Sternberg, L., Teh, S., Ewe, S., Miralles-Wilhelm, F., and DeAngelis, D., 2007, Competition between hardwood hammocks and mangroves: Ecosystems, v. 10, no. 4, p. 648-660, https://doi.org/10.1007/s10021-007-9050-y.","startPage":"648","endPage":"660","numberOfPages":"13","costCenters":[],"links":[{"id":212838,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10021-007-9050-y"},{"id":240388,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"10","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-05-22","publicationStatus":"PW","scienceBaseUri":"5059f8cce4b0c8380cd4d2d6","contributors":{"authors":[{"text":"Sternberg, L.D.S.L.","contributorId":41223,"corporation":false,"usgs":true,"family":"Sternberg","given":"L.D.S.L.","email":"","affiliations":[],"preferred":false,"id":424687,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Teh, S.Y.","contributorId":22969,"corporation":false,"usgs":true,"family":"Teh","given":"S.Y.","email":"","affiliations":[],"preferred":false,"id":424685,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ewe, S.M.L.","contributorId":78496,"corporation":false,"usgs":true,"family":"Ewe","given":"S.M.L.","email":"","affiliations":[],"preferred":false,"id":424688,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Miralles-Wilhelm, F.","contributorId":97325,"corporation":false,"usgs":true,"family":"Miralles-Wilhelm","given":"F.","affiliations":[],"preferred":false,"id":424689,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"DeAngelis, D.L. 0000-0002-1570-4057","orcid":"https://orcid.org/0000-0002-1570-4057","contributorId":32470,"corporation":false,"usgs":true,"family":"DeAngelis","given":"D.L.","affiliations":[],"preferred":false,"id":424686,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029873,"text":"70029873 - 2007 - Effects of intraborehole flow on groundwater age distribution","interactions":[],"lastModifiedDate":"2018-10-11T19:02:24","indexId":"70029873","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"Effects of intraborehole flow on groundwater age distribution","docAbstract":"<p>Environmental tracers are used to estimate groundwater ages and travel times, but the strongly heterogeneous nature of many subsurface environments can cause mixing between waters of highly disparate ages, adding additional complexity to the age-estimation process. Mixing may be exacerbated by the presence of wells because long open intervals or long screens with openings at multiple depths can transport water and solutes rapidly over a large vertical distance. The effect of intraborehole flow on groundwater age was examined numerically using direct age transport simulation coupled with the Multi-Node Well Package of MODFLOW. Ages in a homogeneous, anisotropic aquifer reached a predevelopment steady state possessing strong depth dependence. A nonpumping multi-node well was then introduced in one of three locations within the system. In all three cases, vertical transport along the well resulted in substantial changes in age distributions within the system. After a pumping well was added near the nonpumping multi-node well, ages were further perturbed by a flow reversal in the nonpumping multi-node well. Results indicated that intraborehole flow can substantially alter groundwater ages, but the effects are highly dependent on local or regional flow conditions and may change with time.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrogeology Journal","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10040-006-0139-8","issn":"14312174","usgsCitation":"Zinn, B., and Konikow, L.F., 2007, Effects of intraborehole flow on groundwater age distribution: Hydrogeology Journal, v. 15, no. 4, p. 633-643, https://doi.org/10.1007/s10040-006-0139-8.","productDescription":"11 p.","startPage":"633","endPage":"643","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240353,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212809,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10040-006-0139-8"}],"volume":"15","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-01-09","publicationStatus":"PW","scienceBaseUri":"505a0728e4b0c8380cd515ac","contributors":{"authors":[{"text":"Zinn, B.A.","contributorId":78153,"corporation":false,"usgs":true,"family":"Zinn","given":"B.A.","email":"","affiliations":[],"preferred":false,"id":424684,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Konikow, Leonard F. 0000-0002-0940-3856 lkonikow@usgs.gov","orcid":"https://orcid.org/0000-0002-0940-3856","contributorId":158,"corporation":false,"usgs":true,"family":"Konikow","given":"Leonard","email":"lkonikow@usgs.gov","middleInitial":"F.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":424683,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029848,"text":"70029848 - 2007 - Characterizing dissolved Cu and Cd uptake in terms of the biotic ligand and biodynamics using enriched stable isotopes","interactions":[],"lastModifiedDate":"2023-08-24T11:24:28.963119","indexId":"70029848","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Characterizing dissolved Cu and Cd uptake in terms of the biotic ligand and biodynamics using enriched stable isotopes","docAbstract":"<div id=\"abstractBox\" class=\"article_abstract-content hlFld-Abstract\"><p class=\"articleBody_abstractText\">The biotic ligand model considers the biological and geochemical complexities that affect metal exposure. It relates toxicity to the fraction of physiological active sites impacted by reactive metal species. The biodynamic model is a complementary construct that predicts bioaccumulation and assumes that toxicity occurs when influx rates exceed rates of loss and detoxification. In this paper we presume that metal influx rates are mechanistically the resulting processes that characterize transmembrane transport. We use enriched stable isotopes to characterize, both in terms of the biotic ligand and biodynamics, dissolved metal uptake by a freshwater snail at water hardness varying up to 180-fold. Upon 24 h exposure, metal uptake was linear over a range encompassing most environmental concentrations; although saturation kinetics were observed at higher concentrations. Cadmium influx rates correlate with changes in the affinity of the biotic ligand, whereas those of Cu correlate with changes in both site affinity and capacity. A relationship between metal influx rate and ligand character asks whether toxicity is the result of accumulation at the biotic ligand or the rate at which metal is transported by that ligand.</p></div>","language":"English","publisher":"American Chemical Society","doi":"10.1021/es0615122","issn":"0013936X","usgsCitation":"Croteau, M.N., and Luoma, S.N., 2007, Characterizing dissolved Cu and Cd uptake in terms of the biotic ligand and biodynamics using enriched stable isotopes: Environmental Science & Technology, v. 41, no. 9, p. 3140-3145, https://doi.org/10.1021/es0615122.","productDescription":"6 p.","startPage":"3140","endPage":"3145","numberOfPages":"6","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240488,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"41","issue":"9","noUsgsAuthors":false,"publicationDate":"2007-03-20","publicationStatus":"PW","scienceBaseUri":"5059f4fde4b0c8380cd4c009","contributors":{"authors":[{"text":"Croteau, Marie Noele 0000-0003-0346-3580 mcroteau@usgs.gov","orcid":"https://orcid.org/0000-0003-0346-3580","contributorId":895,"corporation":false,"usgs":true,"family":"Croteau","given":"Marie","email":"mcroteau@usgs.gov","middleInitial":"Noele","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":424574,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Luoma, Samuel N. 0000-0001-5443-5091 snluoma@usgs.gov","orcid":"https://orcid.org/0000-0001-5443-5091","contributorId":2287,"corporation":false,"usgs":true,"family":"Luoma","given":"Samuel","email":"snluoma@usgs.gov","middleInitial":"N.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":424575,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029846,"text":"70029846 - 2007 - Occurrence of oral deformities in larval anurans","interactions":[],"lastModifiedDate":"2015-12-10T11:02:20","indexId":"70029846","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1337,"text":"Copeia","active":true,"publicationSubtype":{"id":10}},"title":"Occurrence of oral deformities in larval anurans","docAbstract":"<p>We quantified deformities in the marginal papillae, tooth rows, and jaw sheaths of tadpoles from 13 population samples representing three families and 11 sites in the southeastern United States. Oral deformities were observed in all samples and in 13.5-98% of the specimens per sample. Batrachochytrium dendrobatidis (chytrid) infections were detected in three samples. There was high variability among samples in the pattern and number of discovered deformities. Pairwise associations between oral structures containing deformities were nonrandom for several populations, especially those with B. dendrobatidis infections or high total numbers of deformities. Comparisons of deformities among samples using multivariate analyses revealed that tadpole samples grouped together by family. Analyses of ordination indicated that three variables, the number of deformities, the number of significant associations among deformity types within populations, and whether populations were infected with B. dendrobatidis, were significantly correlated with the pattern of deformities. Our data indicate that the incidence of oral deformities can be high in natural populations and that phylogeny and B. dendrobatidis infection exert a strong influence on the occurrence and type of oral deformities in tadpoles. ?? by the American Society of Ichthyologists and Herperologists.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Copeia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1643/0045-8511(2007)7[449:OOODIL]2.0.CO;2","issn":"00458511","usgsCitation":"Drake, D., Altig, R., Grace, J., and Walls, S., 2007, Occurrence of oral deformities in larval anurans: Copeia, no. 2, p. 449-458, https://doi.org/10.1643/0045-8511(2007)7[449:OOODIL]2.0.CO;2.","productDescription":"10 p.","startPage":"449","endPage":"458","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":240453,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6bfce4b0c8380cd749da","contributors":{"authors":[{"text":"Drake, D.L.","contributorId":82133,"corporation":false,"usgs":true,"family":"Drake","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":424569,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Altig, R.","contributorId":44259,"corporation":false,"usgs":true,"family":"Altig","given":"R.","email":"","affiliations":[],"preferred":false,"id":424568,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Grace, J.B. 0000-0001-6374-4726","orcid":"https://orcid.org/0000-0001-6374-4726","contributorId":38938,"corporation":false,"usgs":true,"family":"Grace","given":"J.B.","affiliations":[],"preferred":false,"id":424567,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Walls, S.C. 0000-0001-7391-9155","orcid":"https://orcid.org/0000-0001-7391-9155","contributorId":98273,"corporation":false,"usgs":true,"family":"Walls","given":"S.C.","affiliations":[],"preferred":false,"id":424570,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
]}