{"pageNumber":"893","pageRowStart":"22300","pageSize":"25","recordCount":46890,"records":[{"id":70032763,"text":"70032763 - 2007 - Assessing exotic plant species invasions and associated soil characteristics: A case study in eastern Rocky Mountain National Park, Colorado, USA, using the pixel nested plot design","interactions":[],"lastModifiedDate":"2012-03-12T17:21:24","indexId":"70032763","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":846,"text":"Applied Soil Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Assessing exotic plant species invasions and associated soil characteristics: A case study in eastern Rocky Mountain National Park, Colorado, USA, using the pixel nested plot design","docAbstract":"Rocky Mountain National Park (RMNP), Colorado, USA, contains a diversity of plant species. However, many exotic plant species have become established, potentially impacting the structure and function of native plant communities. Our goal was to quantify patterns of exotic plant species in relation to native plant species, soil characteristics, and other abiotic factors that may indicate or predict their establishment and success. Our research approach for field data collection was based on a field plot design called the pixel nested plot. The pixel nested plot provides a link to multi-phase and multi-scale spatial modeling-mapping techniques that can be used to estimate total species richness and patterns of plant diversity at finer landscape scales. Within the eastern region of RMNP, in an area of approximately 35,000 ha, we established a total of 60 pixel nested plots in 9 vegetation types. We used canonical correspondence analysis (CCA) and multiple linear regressions to quantify relationships between soil characteristics and native and exotic plant species richness and cover. We also used linear correlation, spatial autocorrelation and cross correlation statistics to test for the spatial patterns of variables of interest. CCA showed that exotic species were significantly (P < 0.05) associated with photosynthetically active radiation (r = 0.55), soil nitrogen (r = 0.58) and bare ground (r = -0.66). Pearson's correlation statistic showed significant linear relationships between exotic species, organic carbon, soil nitrogen, and bare ground. While spatial autocorrelations indicated that our 60 pixel nested plots were spatially independent, the cross correlation statistics indicated that exotic plant species were spatially associated with bare ground, in general, exotic plant species were most abundant in areas of high native species richness. This indicates that resource managers should focus on the protection of relatively rare native rich sites with little canopy cover, and fertile soils. Using the pixel nested plot approach for data collection can facilitate the ecological monitoring of these vulnerable areas at the landscape scale in a time- and cost-effective manner. ?? 2006 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Soil Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.apsoil.2006.09.009","issn":"09291393","usgsCitation":"Kalkhan, M.A., Stafford, E., Woodly, P., and Stohlgren, T., 2007, Assessing exotic plant species invasions and associated soil characteristics: A case study in eastern Rocky Mountain National Park, Colorado, USA, using the pixel nested plot design: Applied Soil Ecology, v. 35, no. 3, p. 622-634, https://doi.org/10.1016/j.apsoil.2006.09.009.","startPage":"622","endPage":"634","numberOfPages":"13","costCenters":[],"links":[{"id":241496,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213835,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apsoil.2006.09.009"}],"volume":"35","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059edd3e4b0c8380cd49a25","contributors":{"authors":[{"text":"Kalkhan, M. A.","contributorId":82655,"corporation":false,"usgs":false,"family":"Kalkhan","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":437806,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stafford, E.J.","contributorId":11831,"corporation":false,"usgs":true,"family":"Stafford","given":"E.J.","email":"","affiliations":[],"preferred":false,"id":437804,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Woodly, P.J.","contributorId":35963,"corporation":false,"usgs":true,"family":"Woodly","given":"P.J.","email":"","affiliations":[],"preferred":false,"id":437805,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stohlgren, T.J.","contributorId":7217,"corporation":false,"usgs":true,"family":"Stohlgren","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":437803,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031064,"text":"70031064 - 2007 - Prediction of lethal/effective concentration/dose in the presence of multiple auxiliary covariates and components of variance","interactions":[],"lastModifiedDate":"2012-03-12T17:21:16","indexId":"70031064","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Prediction of lethal/effective concentration/dose in the presence of multiple auxiliary covariates and components of variance","docAbstract":"Predictors of the percentile lethal/effective concentration/dose are commonly used measures of efficacy and toxicity. Typically such quantal-response predictors (e.g., the exposure required to kill 50% of some population) are estimated from simple bioassays wherein organisms are exposed to a gradient of several concentrations of a single agent. The toxicity of an agent may be influenced by auxiliary covariates, however, and more complicated experimental designs may introduce multiple variance components. Prediction methods lag examples of those cases. A conventional two-stage approach consists of multiple bivariate predictions of, say, medial lethal concentration followed by regression of those predictions on the auxiliary covariates. We propose a more effective and parsimonious class of generalized nonlinear mixed-effects models for prediction of lethal/effective dose/concentration from auxiliary covariates. We demonstrate examples using data from a study regarding the effects of pH and additions of variable quantities 2???,5???-dichloro-4???- nitrosalicylanilide (niclosamide) on the toxicity of 3-trifluoromethyl-4- nitrophenol to larval sea lamprey (Petromyzon marinus). The new models yielded unbiased predictions and root-mean-squared errors (RMSEs) of prediction for the exposure required to kill 50 and 99.9% of some population that were 29 to 82% smaller, respectively, than those from the conventional two-stage procedure. The model class is flexible and easily implemented using commonly available software. ?? 2007 SETAC.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Toxicology and Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1897/06-630R.1","issn":"07307268","usgsCitation":"Gutreuter, S., and Boogaard, M., 2007, Prediction of lethal/effective concentration/dose in the presence of multiple auxiliary covariates and components of variance: Environmental Toxicology and Chemistry, v. 26, no. 9, p. 1978-1986, https://doi.org/10.1897/06-630R.1.","startPage":"1978","endPage":"1986","numberOfPages":"9","costCenters":[],"links":[{"id":211453,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1897/06-630R.1"},{"id":238744,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"9","noUsgsAuthors":false,"publicationDate":"2007-09-01","publicationStatus":"PW","scienceBaseUri":"505a81efe4b0c8380cd7b7f1","contributors":{"authors":[{"text":"Gutreuter, S.","contributorId":79829,"corporation":false,"usgs":true,"family":"Gutreuter","given":"S.","email":"","affiliations":[],"preferred":false,"id":429887,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Boogaard, M.A.","contributorId":92994,"corporation":false,"usgs":true,"family":"Boogaard","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":429888,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029719,"text":"70029719 - 2007 - Shoreline change as a proxy for subaerial beach volume change","interactions":[],"lastModifiedDate":"2018-04-09T12:36:18","indexId":"70029719","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2220,"text":"Journal of Coastal Research","active":true,"publicationSubtype":{"id":10}},"title":"Shoreline change as a proxy for subaerial beach volume change","docAbstract":"<p>It is difficult and expensive to calculate changes in sediment volume for large sections of sandy beaches. Shoreline change could be a useful proxy for volume change because it can be collected quickly and relatively easily over long distances. In this paper, we summarize several studies that find a high correlation between shoreline change and subaerial volume change. We also examine three new data sets. On Cape Cod, Massachusetts, the correlation coefficients between the time series of shoreline change and subaerial volume change at two locations are 0.73 and 0.96. On Assateague Island, the correlation coefficient between along-coast variations in shoreline change and subaerial volume change is 0.71. On the Outer Banks of North Carolina, the average correlation coefficient between temporal variations in shoreline change and subaerial volume change is 0.84. For spatial variations, the average correlation coefficient is 0.88. It is therefore concluded that shoreline change is a useful proxy for subaerial volume change.</p>","language":"English","publisher":"Coastal Education and Research Foundation","doi":"10.2112/05-0442.1","issn":"07490208","usgsCitation":"Farris, A., and List, J., 2007, Shoreline change as a proxy for subaerial beach volume change: Journal of Coastal Research, v. 23, no. 3, p. 740-748, https://doi.org/10.2112/05-0442.1.","productDescription":"9 p.","startPage":"740","endPage":"748","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":477100,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2112/05-0442.1","text":"Publisher Index Page"},{"id":240168,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Massachusetts, Maryland, North Carolina, Virginia","city":"Cape Cod","otherGeospatial":"Assateague Island, Outer Banks","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -76.5,35.75 ], [ -76.5,42.083333 ], [ -69.833333,42.083333 ], [ -69.833333,35.75 ], [ -76.5,35.75 ] ] ] } } ] }","volume":"23","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8e91e4b08c986b3189f1","contributors":{"authors":[{"text":"Farris, Amy S.","contributorId":28075,"corporation":false,"usgs":true,"family":"Farris","given":"Amy S.","affiliations":[],"preferred":false,"id":423992,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"List, Jeffrey H. jlist@usgs.gov","contributorId":2416,"corporation":false,"usgs":true,"family":"List","given":"Jeffrey H.","email":"jlist@usgs.gov","affiliations":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":false,"id":423991,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029905,"text":"70029905 - 2007 - Temporal patterns of diversity: Assessing the biotic and abiotic controls on ant assemblages","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70029905","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1019,"text":"Biological Journal of the Linnean Society","active":true,"publicationSubtype":{"id":10}},"title":"Temporal patterns of diversity: Assessing the biotic and abiotic controls on ant assemblages","docAbstract":"In this study, we use 12 months of data from 11 ant assemblages to test whether seasonal variation in ant diversity is governed by either the structuring influences of interspecific competition or environmental conditions. Because the importance of competition might vary along environmental gradients, we also test whether the signature of competition depends on elevation. We find little evidence that competition structures the seasonal patterns of activity in the ant assemblages considered, but find support for the effects of temperature on seasonal patterns of diversity, especially at low-elevation sites. Although, in general, both competition and the environment interact to structure ant assemblages, our results suggest that environmental conditions are the primary force structuring the seasonal activity of the ant assemblages studied here. ?? 2007 The Linnean Society of London.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biological Journal of the Linnean Society","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1095-8312.2007.00783.x","issn":"00244066","usgsCitation":"Dunn, R., Parker, C., and Sanders, N., 2007, Temporal patterns of diversity: Assessing the biotic and abiotic controls on ant assemblages: Biological Journal of the Linnean Society, v. 91, no. 2, p. 191-201, https://doi.org/10.1111/j.1095-8312.2007.00783.x.","startPage":"191","endPage":"201","numberOfPages":"11","costCenters":[],"links":[{"id":477117,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1095-8312.2007.00783.x","text":"Publisher Index Page"},{"id":212781,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1095-8312.2007.00783.x"},{"id":240319,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"91","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-05-23","publicationStatus":"PW","scienceBaseUri":"505ba514e4b08c986b3207cb","contributors":{"authors":[{"text":"Dunn, R.R.","contributorId":45111,"corporation":false,"usgs":true,"family":"Dunn","given":"R.R.","email":"","affiliations":[],"preferred":false,"id":424845,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Parker, C.R.","contributorId":21892,"corporation":false,"usgs":true,"family":"Parker","given":"C.R.","email":"","affiliations":[],"preferred":false,"id":424844,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sanders, N.J.","contributorId":61639,"corporation":false,"usgs":true,"family":"Sanders","given":"N.J.","email":"","affiliations":[],"preferred":false,"id":424846,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70033124,"text":"70033124 - 2007 - Evaluation and comparison of gross primary production estimates for the Northern Great Plains grasslands","interactions":[],"lastModifiedDate":"2018-02-21T15:40:52","indexId":"70033124","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3254,"text":"Remote Sensing of Environment","printIssn":"0034-4257","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation and comparison of gross primary production estimates for the Northern Great Plains grasslands","docAbstract":"<p id=\"\">Two spatially-explicit estimates of gross primary production (GPP) are available for the Northern Great Plains. An empirical piecewise regression (PWR) GPP model was developed from flux tower measurements to map carbon flux across the region. The Moderate Resolution Imaging Spectrometer (MODIS) GPP model is a process-based model that uses flux tower data to calibrate its parameters. Verification and comparison of the regional PWR GPP and the global MODIS GPP are important for the modeling of grassland carbon flux. This study compared GPP estimates from PWR and MODIS models with five towers in the grasslands. Among them, PWR GPP and MODIS GPP showed a good agreement with tower-based GPP at three towers. The global MODIS GPP, however, did not agree well with tower-based GPP at two other towers, probably because of the insensitivity of MODIS model to regional ecosystem and climate change and extreme soil moisture conditions. Cross-validation indicated that the PWR model is relatively robust for predicting regional grassland GPP. However, the PWR model should include a wide variety of flux tower data as the training data sets to obtain more accurate results.</p><p id=\"\">In addition, GPP maps based on the PWR and MODIS models were compared for the entire region. In the northwest and south, PWR GPP was much higher than MODIS GPP. These areas were characterized by the higher water holding capacity with a lower proportion of C<sub>4</sub> grasses in the northwest and a higher proportion of C<sub>4</sub> grasses in the south. In the central and southeastern regions, PWR GPP was much lower than MODIS GPP under complicated conditions with generally mixed C<sub>3</sub>/C<sub>4</sub> grasses. The analysis indicated that the global MODIS GPP model has some limitations on detecting moisture stress, which may have been caused by the facts that C<sub>3</sub> and C<sub>4</sub> grasses are not distinguished, water stress is driven by vapor pressure deficit (VPD) from coarse meteorological data, and MODIS land cover data are unable to differentiate the sub-pixel cropland components.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.rse.2006.08.012","issn":"00344257","usgsCitation":"Zhang, L., Wylie, B.K., Loveland, T.R., Fosnight, E.A., Tieszen, L.L., Ji, L., and Gilmanov, T., 2007, Evaluation and comparison of gross primary production estimates for the Northern Great Plains grasslands: Remote Sensing of Environment, v. 106, no. 2, p. 173-189, https://doi.org/10.1016/j.rse.2006.08.012.","productDescription":"17 p.","startPage":"173","endPage":"189","numberOfPages":"17","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":240817,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213213,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.rse.2006.08.012"}],"volume":"106","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0c05e4b0c8380cd529d7","contributors":{"authors":[{"text":"Zhang, Li","contributorId":98139,"corporation":false,"usgs":true,"family":"Zhang","given":"Li","affiliations":[],"preferred":false,"id":439467,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wylie, Bruce K. 0000-0002-7374-1083 wylie@usgs.gov","orcid":"https://orcid.org/0000-0002-7374-1083","contributorId":750,"corporation":false,"usgs":true,"family":"Wylie","given":"Bruce","email":"wylie@usgs.gov","middleInitial":"K.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true},{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"preferred":true,"id":439469,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Loveland, Thomas R. 0000-0003-3114-6646 loveland@usgs.gov","orcid":"https://orcid.org/0000-0003-3114-6646","contributorId":140256,"corporation":false,"usgs":true,"family":"Loveland","given":"Thomas","email":"loveland@usgs.gov","middleInitial":"R.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":439471,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fosnight, Eugene A. 0000-0002-8557-3697 fosnight@usgs.gov","orcid":"https://orcid.org/0000-0002-8557-3697","contributorId":2961,"corporation":false,"usgs":true,"family":"Fosnight","given":"Eugene","email":"fosnight@usgs.gov","middleInitial":"A.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":439468,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tieszen, Larry L. tieszen@usgs.gov","contributorId":2831,"corporation":false,"usgs":true,"family":"Tieszen","given":"Larry","email":"tieszen@usgs.gov","middleInitial":"L.","affiliations":[],"preferred":true,"id":439466,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ji, Lei 0000-0002-6133-1036 lji@usgs.gov","orcid":"https://orcid.org/0000-0002-6133-1036","contributorId":2832,"corporation":false,"usgs":true,"family":"Ji","given":"Lei","email":"lji@usgs.gov","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":439472,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Gilmanov, Tagir","contributorId":6351,"corporation":false,"usgs":true,"family":"Gilmanov","given":"Tagir","affiliations":[],"preferred":false,"id":439470,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70031353,"text":"70031353 - 2007 - Consequences of land-cover misclassification in models of impervious surface","interactions":[],"lastModifiedDate":"2023-02-10T17:53:07.880351","indexId":"70031353","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3052,"text":"Photogrammetric Engineering and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Consequences of land-cover misclassification in models of impervious surface","docAbstract":"Model estimates of impervious area as a function of landcover area may be biased and imprecise because of errors in the land-cover classification. This investigation of the effects of land-cover misclassification on impervious surface models that use National Land Cover Data (NLCD) evaluates the consequences of adjusting land-cover within a watershed to reflect uncertainty assessment information. Model validation results indicate that using error-matrix information to adjust land-cover values used in impervious surface models does not substantially improve impervious surface predictions. Validation results indicate that the resolution of the landcover data (Level I and Level II) is more important in predicting impervious surface accurately than whether the land-cover data have been adjusted using information in the error matrix. Level I NLCD, adjusted for land-cover misclassification, is preferable to the other land-cover options for use in models of impervious surface. This result is tied to the lower classification error rates for the Level I NLCD. ?? 2007 American Society for Photogrammetry and Remote Sensing.","language":"English","publisher":"ASPRS","doi":"10.14358/PERS.73.12.1343","usgsCitation":"McMahon, G., 2007, Consequences of land-cover misclassification in models of impervious surface: Photogrammetric Engineering and Remote Sensing, v. 73, no. 12, p. 1343-1353, https://doi.org/10.14358/PERS.73.12.1343.","productDescription":"11 p.","startPage":"1343","endPage":"1353","numberOfPages":"11","costCenters":[{"id":565,"text":"Southeast Climate Science Center","active":true,"usgs":true}],"links":[{"id":477076,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.14358/pers.73.12.1343","text":"Publisher Index Page"},{"id":240061,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"73","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f9d5e4b0c8380cd4d7e6","contributors":{"authors":[{"text":"McMahon, Gerard 0000-0001-7675-777X gmcmahon@usgs.gov","orcid":"https://orcid.org/0000-0001-7675-777X","contributorId":191488,"corporation":false,"usgs":true,"family":"McMahon","given":"Gerard","email":"gmcmahon@usgs.gov","affiliations":[{"id":565,"text":"Southeast Climate Science Center","active":true,"usgs":true},{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":431172,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70033213,"text":"70033213 - 2007 - Time-optimum packet scheduling for many-to-one routing in wireless sensor networks","interactions":[],"lastModifiedDate":"2012-03-12T17:21:38","indexId":"70033213","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2063,"text":"International Journal of Parallel, Emergent and Distributed Systems","active":true,"publicationSubtype":{"id":10}},"title":"Time-optimum packet scheduling for many-to-one routing in wireless sensor networks","docAbstract":"This paper studies the wireless sensor networks (WSN) application scenario with periodical traffic from all sensors to a sink. We present a time-optimum and energy-efficient packet scheduling algorithm and its distributed implementation. We first give a general many-to-one packet scheduling algorithm for wireless networks, and then prove that it is time-optimum and costs [image omitted], N(u0)-1) time slots, assuming each node reports one unit of data in each round. Here [image omitted] is the total number of sensors, while [image omitted] denotes the number of sensors in a sink's largest branch subtree. With a few adjustments, we then show that our algorithm also achieves time-optimum scheduling in heterogeneous scenarios, where each sensor reports a heterogeneous amount of data in each round. Then we give a distributed implementation to let each node calculate its duty-cycle locally and maximize efficiency globally. In this packet-scheduling algorithm, each node goes to sleep whenever it is not transceiving, so that the energy waste of idle listening is also mitigated. Finally, simulations are conducted to evaluate network performance using the Qualnet simulator. Among other contributions, our study also identifies the maximum reporting frequency that a deployed sensor network can handle.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Parallel, Emergent and Distributed Systems","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1080/17445760601111459","issn":"17445760","usgsCitation":"Song, W., Yuan, F., LaHusen, R., and Shirazi, B., 2007, Time-optimum packet scheduling for many-to-one routing in wireless sensor networks: International Journal of Parallel, Emergent and Distributed Systems, v. 22, no. 5, p. 355-370, https://doi.org/10.1080/17445760601111459.","startPage":"355","endPage":"370","numberOfPages":"16","costCenters":[],"links":[{"id":213535,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/17445760601111459"},{"id":241165,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"22","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb3d5e4b08c986b325ff8","contributors":{"authors":[{"text":"Song, W.-Z.","contributorId":23334,"corporation":false,"usgs":true,"family":"Song","given":"W.-Z.","email":"","affiliations":[],"preferred":false,"id":439859,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Yuan, F.","contributorId":104287,"corporation":false,"usgs":true,"family":"Yuan","given":"F.","email":"","affiliations":[],"preferred":false,"id":439861,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"LaHusen, R.","contributorId":7446,"corporation":false,"usgs":true,"family":"LaHusen","given":"R.","email":"","affiliations":[],"preferred":false,"id":439858,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shirazi, B.","contributorId":78162,"corporation":false,"usgs":true,"family":"Shirazi","given":"B.","email":"","affiliations":[],"preferred":false,"id":439860,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031117,"text":"70031117 - 2007 - Scaling field data to calibrate and validate moderate spatial resolution remote sensing models","interactions":[],"lastModifiedDate":"2023-02-10T17:47:39.643565","indexId":"70031117","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3052,"text":"Photogrammetric Engineering and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Scaling field data to calibrate and validate moderate spatial resolution remote sensing models","docAbstract":"<p>Validation and calibration are essential components of nearly all remote sensing-based studies. In both cases, ground measurements are collected and then related to the remote sensing observations or model results. In many situations, and particularly in studies that use moderate resolution remote sensing, a mismatch exists between the sensor’s field of view and the scale at which in situ measurements are collected. The use of in situ measurements for model calibration and validation, therefore, requires a robust and defensible method to spatially aggregate ground measurements to the scale at which the remotely sensed data are acquired. This paper examines this challenge and specifically considers two different approaches for aggregating field measurements to match the spatial resolution of moderate spatial resolution remote sensing data: (a) landscape stratification; and (b) averaging of fine spatial resolution maps. The results show that an empirically estimated stratification based on a regression tree method provides a statistically defensible and operational basis for performing this type of procedure.</p>","language":"English","publisher":"ASPRS","doi":"10.14358/PERS.73.8.945","usgsCitation":"Baccini, A., Friedl, M.A., Woodcock, C.E., and Zhu, Z., 2007, Scaling field data to calibrate and validate moderate spatial resolution remote sensing models: Photogrammetric Engineering and Remote Sensing, v. 73, no. 8, p. 945-954, https://doi.org/10.14358/PERS.73.8.945.","productDescription":"10 p.","startPage":"945","endPage":"954","numberOfPages":"10","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":477131,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.14358/pers.73.8.945","text":"Publisher Index Page"},{"id":239011,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"73","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8713e4b08c986b3162cc","contributors":{"authors":[{"text":"Baccini, A.","contributorId":32349,"corporation":false,"usgs":true,"family":"Baccini","given":"A.","email":"","affiliations":[],"preferred":false,"id":430102,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Friedl, M. A.","contributorId":18174,"corporation":false,"usgs":false,"family":"Friedl","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":430101,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Woodcock, C. E.","contributorId":93696,"corporation":false,"usgs":false,"family":"Woodcock","given":"C.","email":"","middleInitial":"E.","affiliations":[{"id":13570,"text":"Boston University","active":true,"usgs":false}],"preferred":false,"id":430103,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Zhu, Z.","contributorId":10898,"corporation":false,"usgs":true,"family":"Zhu","given":"Z.","email":"","affiliations":[],"preferred":false,"id":430100,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031116,"text":"70031116 - 2007 - A comparison of protocols and observer precision for measuring physical stream attributes","interactions":[],"lastModifiedDate":"2015-12-15T13:13:08","indexId":"70031116","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":"A comparison of protocols and observer precision for measuring physical stream attributes","docAbstract":"<p>Stream monitoring programs commonly measure physical attributes to assess the effect of land management on stream habitat. Variability associated with the measurement of these attributes has been linked to a number of factors, but few studies have evaluated variability due to differences in protocols. We compared six protocols, five used by the U.S. Department of Agriculture Forest Service and one by the U.S. Environmental Protection Agency, on six streams in Oregon and Idaho to determine whether differences in protocol affect values for 10 physical stream attributes. Results from Oregon and Idaho were combined for groups participating in both states, with significant differences in attribute means for 9 out of the 10 stream attributes. Significant differences occurred in 5 of 10 in Idaho, and 10 of 10 in Oregon. Coefficients of variation, signal-to-noise ratio, and root mean square error were used to evaluate measurement precision. There were differences among protocols for all attributes when states were analyzed separately and as a combined dataset. Measurement differences were influenced by choice of instruments, measurement method, measurement location, attribute definitions, and training approach. Comparison of data gathered by observers using different protocols will be difficult unless a core set of protocols for commonly measured stream attributes can be standardized among monitoring programs.</p>","largerWorkType":{"id":2,"text":"Article"},"language":"English","publisher":"American Water Resources Association","doi":"10.1111/j.1752-1688.2007.00074.x","issn":"1093474X","usgsCitation":"Whitacre, H., Roper, B., and Kershner, J.L., 2007, A comparison of protocols and observer precision for measuring physical stream attributes: Journal of the American Water Resources Association, v. 43, no. 4, p. 923-937, https://doi.org/10.1111/j.1752-1688.2007.00074.x.","productDescription":"15 p.","startPage":"923","endPage":"937","numberOfPages":"15","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"links":[{"id":238978,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211650,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2007.00074.x"}],"country":"United States","state":"Idaho, Oregon","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -115.927734375,\n              48.951366470947725\n            ],\n            [\n              -117.09228515624999,\n              49.05227025601607\n            ],\n            [\n              -116.96044921875,\n              46.22545288226939\n            ],\n            [\n              -120.60791015625,\n              46.08847179577592\n            ],\n            [\n              -123.85986328124999,\n              46.13417004624326\n            ],\n            [\n              -124.29931640625,\n              44.4808302785626\n            ],\n            [\n              -124.43115234375,\n              41.96765920367816\n            ],\n            [\n              -118.36669921875,\n              42.06560675405716\n            ],\n            [\n              -111.005859375,\n              42.06560675405716\n            ],\n            [\n              -111.15966796875,\n              44.809121700077355\n            ],\n            [\n              -115.02685546875,\n              46.99524110694596\n            ],\n            [\n              -115.99365234375,\n              47.79839667295524\n            ],\n            [\n              -115.99365234375,\n              49.009050809382046\n            ],\n            [\n              -115.927734375,\n              48.951366470947725\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"43","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-06-28","publicationStatus":"PW","scienceBaseUri":"5059e370e4b0c8380cd4600a","contributors":{"authors":[{"text":"Whitacre, H.W.","contributorId":94094,"corporation":false,"usgs":true,"family":"Whitacre","given":"H.W.","email":"","affiliations":[],"preferred":false,"id":430098,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Roper, B.B.","contributorId":65280,"corporation":false,"usgs":true,"family":"Roper","given":"B.B.","email":"","affiliations":[],"preferred":false,"id":430097,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kershner, J. 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,{"id":70030121,"text":"70030121 - 2007 - Dust deposition on the Mars Exploration Rover Panoramic Camera (Pancam) calibration targets","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70030121","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2317,"text":"Journal of Geophysical Research E: Planets","active":true,"publicationSubtype":{"id":10}},"title":"Dust deposition on the Mars Exploration Rover Panoramic Camera (Pancam) calibration targets","docAbstract":"The Panoramic Camera (Pancam) on the Mars Exploration Rover mission has acquired in excess of 20,000 images of the Pancam calibration targets on the rovers. Analysis of this data set allows estimates of the rate of deposition and removal of aeolian dust on both rovers. During the first 150-170 sols there was gradual dust accumulation on the rovers but no evidence for dust removal. After that time there is ample evidence for both dust removal and dust deposition on both rover decks. We analyze data from early in both rover missions using a diffusive reflectance mixing model. Assuming a dust settling rate proportional to the atmospheric optical depth, we derive spectra of optically thick layers of airfall dust that are consistent with spectra from dusty regions on the Martian surface. Airfall dust reflectance at the Opportunity site appears greater than at the Spirit site, consistent with other observations. We estimate the optical depth of dust deposited on the Spirit calibration target by sol 150 to be 0.44 ?? 0.13. For Opportunity the value was 0.39 ?? 0.12. Assuming 80% pore space, we estimate that the dust layer grew at a rate of one grain diameter per ???100 sols on the Spirit calibration target. On Opportunity the rate was one grain diameter per ???125 sols. These numbers are consistent with dust deposition rates observed by Mars Pathfinder taking into account the lower atmospheric dust optical depth during the Mars Pathfinder mission. Copyright 2007 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research E: Planets","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2006JE002807","issn":"01480227","usgsCitation":"Kinch, K., Sohl-Dickstein, J., Bell, J., Johnson, J.R., Goetz, W., and Landis, G.A., 2007, Dust deposition on the Mars Exploration Rover Panoramic Camera (Pancam) calibration targets: Journal of Geophysical Research E: Planets, v. 112, no. 6, https://doi.org/10.1029/2006JE002807.","costCenters":[],"links":[{"id":487770,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://resolver.sub.uni-goettingen.de/purl?gro-2/129781","text":"External Repository"},{"id":240599,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213019,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2006JE002807"}],"volume":"112","issue":"6","noUsgsAuthors":false,"publicationDate":"2007-04-26","publicationStatus":"PW","scienceBaseUri":"505a041ce4b0c8380cd507bb","contributors":{"authors":[{"text":"Kinch, K.M.","contributorId":9041,"corporation":false,"usgs":true,"family":"Kinch","given":"K.M.","affiliations":[],"preferred":false,"id":425801,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sohl-Dickstein, J.","contributorId":8295,"corporation":false,"usgs":true,"family":"Sohl-Dickstein","given":"J.","affiliations":[],"preferred":false,"id":425800,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bell, J.F. III","contributorId":97612,"corporation":false,"usgs":true,"family":"Bell","given":"J.F.","suffix":"III","email":"","affiliations":[],"preferred":false,"id":425804,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Johnson, J. R.","contributorId":69278,"corporation":false,"usgs":true,"family":"Johnson","given":"J.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":425802,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Goetz, W.","contributorId":104258,"corporation":false,"usgs":true,"family":"Goetz","given":"W.","affiliations":[],"preferred":false,"id":425805,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Landis, G. A.","contributorId":76536,"corporation":false,"usgs":true,"family":"Landis","given":"G.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":425803,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70032922,"text":"70032922 - 2007 - Evaluation of the status of anurans on a refuge in suburban Maryland","interactions":[],"lastModifiedDate":"2012-03-12T17:21:37","indexId":"70032922","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":"Evaluation of the status of anurans on a refuge in suburban Maryland","docAbstract":"Because many anurans have well-defined breeding seasons and male anurans produce loud advertisement calls, surveys of these breeding choruses are believed to provide a dependable means of monitoring population trends. The Patuxent Research Refuge initiated such a calling survey in the spring of 1997, which uses volunteers to collect anuran (frog and toad) calling survey data. The primary goal of initiating the calling surveys at the Patuxent Refuge was to obtain baseline information on anuran populations, such as species occurrence, frequency of occurrence, and relative abundance over time. In this paper, we used the calling survey data to develop models for the \"proportion of area occupied\" by individual anuran species, a method in which analysis is focused on the proportion of sites that are occupied by a species, instead of the number of individuals present in the population. This type of analysis is ideal for use in large-scale monitoring programs focused on species that are difficult to count, such as anurans or birds. We considered models for proportion of area occupied that allow for imperfect detection (that is, a species may be present but go undetected during sampling) by incorporating parameters that describe detection probability and the response of detection probability to various environmental and sampling covariates. Our results indicate that anuran populations on the Patuxent Research Refuge have high rates of occupancy compared to areas nearby and that extinction and colonization rates are stable. The potential uses for \"proportion of area occupied\" analyses are far-reaching and will allow for more accurate quantification of data and better-informed management decisions for calling surveys on a larger scale. 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[52:EOTSOA]2.0.CO;2","issn":"00221511","usgsCitation":"Brander, S., Royle, J., and Eames, M., 2007, Evaluation of the status of anurans on a refuge in suburban Maryland: Journal of Herpetology, v. 41, no. 1, p. 52-60, https://doi.org/10.1670/0022-1511(2007)41[52:EOTSOA]2.0.CO;2.","startPage":"52","endPage":"60","numberOfPages":"9","costCenters":[],"links":[{"id":213231,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1670/0022-1511(2007)41[52:EOTSOA]2.0.CO;2"},{"id":240836,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"41","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0cf4e4b0c8380cd52d71","contributors":{"authors":[{"text":"Brander, S.M.","contributorId":45431,"corporation":false,"usgs":true,"family":"Brander","given":"S.M.","email":"","affiliations":[],"preferred":false,"id":438536,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Royle, J. Andrew 0000-0003-3135-2167","orcid":"https://orcid.org/0000-0003-3135-2167","contributorId":96221,"corporation":false,"usgs":true,"family":"Royle","given":"J. Andrew","affiliations":[],"preferred":false,"id":438538,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Eames, M.","contributorId":70094,"corporation":false,"usgs":true,"family":"Eames","given":"M.","email":"","affiliations":[],"preferred":false,"id":438537,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70032920,"text":"70032920 - 2007 - Influences of wildfire and channel reorganization on spatial and temporal variation in stream temperature and the distribution of fish and amphibians","interactions":[],"lastModifiedDate":"2017-11-15T13:27:24","indexId":"70032920","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":"Influences of wildfire and channel reorganization on spatial and temporal variation in stream temperature and the distribution of fish and amphibians","docAbstract":"Wildfire can influence a variety of stream ecosystem properties. We studied stream temperatures in relation to wildfire in small streams in the Boise River Basin, located in central Idaho, USA. To examine the spatio-temporal aspects of temperature in relation to wildfire, we employed three approaches: a pre-post fire comparison of temperatures between two sites (one from a burned stream and one unburned) over 13 years, a short-term (3 year) pre-post fire comparison of a burned and unburned stream with spatially extensive data, and a short-term (1 year) comparative study of spatial variability in temperatures using a \"space for time\" substitutive design across 90 sites in nine streams (retrospective comparative study). The latter design included streams with a history of stand-replacing wildfire and streams with severe post-fire reorganization of channels due to debris flows and flooding. Results from these three studies indicated that summer maximum water temperatures can remain significantly elevated for at least a decade following wildfire, particularly in streams with severe channel reorganization. In the retrospective comparative study we investigated occurrence of native rainbow trout (Oncorhynchus mykiss) and tailed frog larvae (Ascaphus montanus) in relation to maximum stream temperatures during summer. Both occurred in nearly every site sampled, but tailed frog larvae were found in much warmer water than previously reported in the field (26.6??C maximum summer temperature). Our results show that physical stream habitats can remain altered (for example, increased temperature) for many years following wildfire, but that native aquatic vertebrates can be resilient. In a management context, this suggests wildfire may be less of a threat to native species than human influences that alter the capacity of stream-living vertebrates to persist in the face of natural disturbance. ?? 2007 Springer Science+Business Media, LLC.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecosystems","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10021-007-9029-8","issn":"14329840","usgsCitation":"Dunham, J., Rosenberger, A., Luce, C., and Rieman, B., 2007, Influences of wildfire and channel reorganization on spatial and temporal variation in stream temperature and the distribution of fish and amphibians: Ecosystems, v. 10, no. 2, p. 335-346, https://doi.org/10.1007/s10021-007-9029-8.","startPage":"335","endPage":"346","numberOfPages":"12","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":240805,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213202,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10021-007-9029-8"}],"volume":"10","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-04-13","publicationStatus":"PW","scienceBaseUri":"505a3baee4b0c8380cd6275b","contributors":{"authors":[{"text":"Dunham, J. B. 0000-0002-6268-0633","orcid":"https://orcid.org/0000-0002-6268-0633","contributorId":96637,"corporation":false,"usgs":true,"family":"Dunham","given":"J. B.","affiliations":[],"preferred":false,"id":438531,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rosenberger, A.E.","contributorId":98526,"corporation":false,"usgs":true,"family":"Rosenberger","given":"A.E.","email":"","affiliations":[],"preferred":false,"id":438532,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Luce, C.H.","contributorId":81057,"corporation":false,"usgs":true,"family":"Luce","given":"C.H.","email":"","affiliations":[],"preferred":false,"id":438530,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rieman, B.E.","contributorId":67283,"corporation":false,"usgs":true,"family":"Rieman","given":"B.E.","email":"","affiliations":[],"preferred":false,"id":438529,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70043108,"text":"cir13067B - 2007 - Selected chemical composition of deposited sediments in the flooded areas of New Orleans following Hurricane Katrina","interactions":[],"lastModifiedDate":"2019-06-18T11:59:19","indexId":"cir13067B","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":307,"text":"Circular","code":"CIR","onlineIssn":"2330-5703","printIssn":"1067-084X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1306","chapter":"7B","title":"Selected chemical composition of deposited sediments in the flooded areas of New Orleans following Hurricane Katrina","docAbstract":"Nearly 4 weeks after Hurricane Katrina passed through St. Bernard Parish, the U.S. Geological Survey's (USGS) Mid-Continent Geographic Science Center and the University of Missouri-Rolla's (UMR) Natural Hazard Mitigation Institute deployed a team of scientists to the region to collect perishable environmental and engineering data. The team collected 149 samples throughout the affected area to chemically characterize the Katrina depositional sediments. Preliminary results of this effort are presented here.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Science and the storms-the USGS response to the hurricanes of 2005 (Circular 1306)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/cir13067B","collaboration":"This report is Chapter 7B in <i>Science and the storms-the USGS response to the hurricanes of 2005</i>.  See <a href=\"http://pubs.er.usgs.gov/publication/cir1306\" target=\"_blank\">Circular 1306</a> for more information and other chapters.","usgsCitation":"Witt, E.C., Adams, C., Wang, J., Shaver, D.K., and Filali-Meknassi, Y., 2007, Selected chemical composition of deposited sediments in the flooded areas of New Orleans following Hurricane Katrina: U.S. Geological Survey Circular 1306, 6 p., https://doi.org/10.3133/cir13067B.","productDescription":"6 p.","startPage":"201","endPage":"206","numberOfPages":"6","costCenters":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":266999,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/cir_1306_7b.gif"},{"id":266998,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/circ/1306/pdf/c1306_ch7_b.pdf"},{"id":266997,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/circ/1306/"}],"country":"United States","state":"Louisiana","city":"St. Bernard Parish","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -90.01,29.62 ], [ -90.01,30.16 ], [ -88.81,30.16 ], [ -88.81,29.62 ], [ -90.01,29.62 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"51123851e4b0ebe69d7eb759","contributors":{"authors":[{"text":"Witt, Emitt C. III 0000-0002-1814-7807 ecwitt@usgs.gov","orcid":"https://orcid.org/0000-0002-1814-7807","contributorId":1612,"corporation":false,"usgs":true,"family":"Witt","given":"Emitt","suffix":"III","email":"ecwitt@usgs.gov","middleInitial":"C.","affiliations":[{"id":404,"text":"NGTOC Rolla","active":true,"usgs":true},{"id":5074,"text":"Center for Geospatial Information Science (CEGIS)","active":true,"usgs":true}],"preferred":true,"id":472972,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Adams, Craig","contributorId":34400,"corporation":false,"usgs":true,"family":"Adams","given":"Craig","affiliations":[],"preferred":false,"id":472974,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wang, Jianmin","contributorId":33179,"corporation":false,"usgs":true,"family":"Wang","given":"Jianmin","email":"","affiliations":[],"preferred":false,"id":472973,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shaver, David K. dshaver@usgs.gov","contributorId":1611,"corporation":false,"usgs":true,"family":"Shaver","given":"David","email":"dshaver@usgs.gov","middleInitial":"K.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":472971,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Filali-Meknassi, Youssef","contributorId":64525,"corporation":false,"usgs":true,"family":"Filali-Meknassi","given":"Youssef","email":"","affiliations":[],"preferred":false,"id":472975,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70030198,"text":"70030198 - 2007 - Factors associated with sources, transport, and fate of volatile organic compounds and their mixtures in aquifers of the United States","interactions":[],"lastModifiedDate":"2012-03-12T17:21:01","indexId":"70030198","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":"Factors associated with sources, transport, and fate of volatile organic compounds and their mixtures in aquifers of the United States","docAbstract":"Factors associated with sources, transport, and fate of volatile organic compounds (VOCs) in groundwater from aquifers throughout the United States were evaluated using statistical methods. Samples were collected from 1631 wells throughout the conterminous United States between 1996 and 2002 as part of the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey. Water samples from wells completed in aquifers used to supply drinking water were analyzed for more than 50 VOCs. Wells were primarily rural domestic water supplies (1184), followed by public water supplies (216); the remaining wells (231) supplied a variety of uses. The median well depth was 50 meters. Age-date information shows that about 60% of the samples had a fraction of water recharged after 1953. Chloroform, toluene, 1,2,4-trimethylbenzene, and perchloroethene were some of the frequently detected VOCs. Concentrations generally were less than 1 ??g/L. Source factors include, in order of importance, general land-use activity, septic/sewer density, and sites where large concentrations of VOCs are potentially released, such as leaking underground storage tanks. About 10% of all samples had VOC mixtures that were associated with concentrated sources; 20% were associated with dispersed sources. Important transport factors included well/screen depth, precipitation/groundwater recharge, air temperature, and various soil characteristics. Dissolved oxygen was strongly associated with VOCs and represents the fate of many VOCs in groundwater. Well type (domestic or public water supply) was also an important explanatory factor. Results of multiple analyses show the importance of (1) accounting for both dispersed and concentrated sources of VOCs, (2) measuring dissolved oxygen when sampling wells to help explain the fate of VOCs, and (3) limiting the type of wells sampled in monitoring networks to avoid unnecessary variance in the data, or controlling for this variance during data analysis.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Science and Technology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1021/es061079w","issn":"0013936X","usgsCitation":"Squillace, P.J., and Moran, M., 2007, Factors associated with sources, transport, and fate of volatile organic compounds and their mixtures in aquifers of the United States: Environmental Science & Technology, v. 41, no. 7, p. 2123-2130, https://doi.org/10.1021/es061079w.","startPage":"2123","endPage":"2130","numberOfPages":"8","costCenters":[],"links":[{"id":239086,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211738,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es061079w"}],"volume":"41","issue":"7","noUsgsAuthors":false,"publicationDate":"2007-03-06","publicationStatus":"PW","scienceBaseUri":"505a0eb4e4b0c8380cd535a3","contributors":{"authors":[{"text":"Squillace, P. J.","contributorId":8878,"corporation":false,"usgs":true,"family":"Squillace","given":"P.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":426098,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Moran, M.J.","contributorId":7862,"corporation":false,"usgs":true,"family":"Moran","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":426097,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029921,"text":"70029921 - 2007 - High-resolution proxy record of Holocene climate from a loess section in Southwestern Nebraska, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:06","indexId":"70029921","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2996,"text":"Palaeogeography, Palaeoclimatology, Palaeoecology","printIssn":"0031-0182","active":true,"publicationSubtype":{"id":10}},"title":"High-resolution proxy record of Holocene climate from a loess section in Southwestern Nebraska, USA","docAbstract":"Multi-proxy analysis was used to produce a high-resolution paleoclimatic record from an exceptionally thick section of the Holocene Bignell Loess near Wauneta, Southwestern Nebraska, in the central Great Plains. The Wauneta section has excellent age control, based on optically stimulated luminescence (OSL) and radiocarbon dating, and records multiple episodes of rapid loess deposition alternating with slower deposition and soil formation. The lowermost and uppermost OSL ages obtained from the Bignell Loess are 10,250 ?? 610??years (5.9??m depth) and 100 ?? 10??years (0.1??m depth), respectively. As a result, the Holocene has been temporally confined. Stratigraphically, the Bignell Loess overlies the Late Pleistocene Peoria Loess (deposited ??? 21-14??ka), and the two units are separated by the Brady Soil which is distinguished by its color and other pedogenic features. L*a*b* color parameters and organic carbon content of Bignell Loess are sensitive proxies to differentiate drought-induced aeolian sediment layers from the intercalated soil horizons. Soil organic carbon-derived ??13C data suggest that the C3-dominated floral environment during Peoria Loess deposition shifted dramatically to a C4-dominated environment during Brady Soil formation in response to a warming trend. Even greater C4 abundance characterized the late Holocene. High-resolution ??13C data support the contention that C3 vs. C4 vegetation change in the Holocene reflects ecosystem response to frequent vegetation disturbance under arid conditions. Time series analysis reveals that ??13C and color parameters display high frequency variation with periodicities of 103-118??years and 103??years, respectively. Similar periodicities were also reported in studies of North Dakota lakes, though the physical mechanism responsible is uncertain. Comparison of Bignell Loess color and tropical Pacific sea surface temperatures (SSTs) allows evaluation of a proposed teleconnection between drought in the Great Plains and La Nin??a-like conditions in the tropical Pacific. The loess color index and eastern tropical Pacific SST display broad similarities through the late Pleistocene and Holocene that are consistent with this teleconnection. On the other hand, drought centered at 3800??years ago is not consistent with the teleconnection, and the end of early Holocene aridity at the Wauneta section, around 6500??years ago, is much earlier than the corresponding rise in SST and increase in El Nin??o frequency in the eastern tropical Pacific. ?? 2006 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Palaeogeography, Palaeoclimatology, Palaeoecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.palaeo.2006.09.004","issn":"00310182","usgsCitation":"Miao, X., Mason, J., Johnson, W., and Wang, H., 2007, High-resolution proxy record of Holocene climate from a loess section in Southwestern Nebraska, USA: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 245, no. 3-4, p. 368-381, https://doi.org/10.1016/j.palaeo.2006.09.004.","startPage":"368","endPage":"381","numberOfPages":"14","costCenters":[],"links":[{"id":213006,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.palaeo.2006.09.004"},{"id":240586,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"245","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3113e4b0c8380cd5dbee","contributors":{"authors":[{"text":"Miao, X.","contributorId":60753,"corporation":false,"usgs":true,"family":"Miao","given":"X.","email":"","affiliations":[],"preferred":false,"id":424914,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mason, J.A.","contributorId":31507,"corporation":false,"usgs":true,"family":"Mason","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":424913,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Johnson, W.C.","contributorId":68003,"corporation":false,"usgs":true,"family":"Johnson","given":"W.C.","email":"","affiliations":[],"preferred":false,"id":424915,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wang, Hongfang","contributorId":92635,"corporation":false,"usgs":true,"family":"Wang","given":"Hongfang","email":"","affiliations":[],"preferred":false,"id":424916,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029742,"text":"70029742 - 2007 - Quantitative remote sensing study indicates doubling of coastal erosion rate in past 50 yr along a segment of the Arctic coast of Alaska","interactions":[],"lastModifiedDate":"2012-03-12T17:21:06","indexId":"70029742","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Quantitative remote sensing study indicates doubling of coastal erosion rate in past 50 yr along a segment of the Arctic coast of Alaska","docAbstract":"A new quantitative coastal land gained-and-lost method uses image analysis of topographic maps and Landsat thematic mapper short-wave infrared data to document accelerated coastal land loss and thermokarst lake expansion and drainage. The data span 1955-2005 along the Beaufort Sea coast north of Teshekpuk Lake in the National Petroleum Reserve in Alaska. Some areas have undergone as much as 0.9 km of coastal erosion in the past 50 yr. Land loss attributed to coastal erosion more than doubled, from 0.48 km2 yr-1 during 1955-1985 to 1.08 km2 yr-1 during 1985-2005. Coastal erosion has breached thermokarst lakes, causing initial draining of the lakes followed by marine floodng. Although inland thermokarst lakes show some uniform expansion, lakes breached by coastal erosion display lake expansion several orders of magnitude greater than inland lakes. ?? 2007 The Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/G23672A.1","issn":"00917613","usgsCitation":"Mars, J., and Houseknecht, D., 2007, Quantitative remote sensing study indicates doubling of coastal erosion rate in past 50 yr along a segment of the Arctic coast of Alaska: Geology, v. 35, no. 7, p. 583-586, https://doi.org/10.1130/G23672A.1.","startPage":"583","endPage":"586","numberOfPages":"4","costCenters":[],"links":[{"id":212917,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G23672A.1"},{"id":240482,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"35","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a922fe4b0c8380cd806f4","contributors":{"authors":[{"text":"Mars, J.C.","contributorId":74833,"corporation":false,"usgs":true,"family":"Mars","given":"J.C.","affiliations":[],"preferred":false,"id":424090,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Houseknecht, D.W. 0000-0002-9633-6910","orcid":"https://orcid.org/0000-0002-9633-6910","contributorId":33695,"corporation":false,"usgs":true,"family":"Houseknecht","given":"D.W.","affiliations":[],"preferred":false,"id":424089,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70030354,"text":"70030354 - 2007 - Red-shouldered hawk occupancy surveys in central Minnesota, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:03","indexId":"70030354","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Red-shouldered hawk occupancy surveys in central Minnesota, USA","docAbstract":"Forest-dwelling raptors are often difficult to detect because many species occur at low density or are secretive. Broadcasting conspecific vocalizations can increase the probability of detecting forest-dwelling raptors and has been shown to be an effective method for locating raptors and assessing their relative abundance. Recent advances in statistical techniques based on presence-absence data use probabilistic arguments to derive probability of detection when it is <1 and to provide a model and likelihood-based method for estimating proportion of sites occupied. We used these maximum-likelihood models with data from red-shouldered hawk (Buteo lineatus) call-broadcast surveys conducted in central Minnesota, USA, in 1994-1995 and 2004-2005. Our objectives were to obtain estimates of occupancy and detection probability 1) over multiple sampling seasons (yr), 2) incorporating within-season time-specific detection probabilities, 3) with call type and breeding stage included as covariates in models of probability of detection, and 4) with different sampling strategies. We visited individual survey locations 2-9 times per year, and estimates of both probability of detection (range = 0.28-0.54) and site occupancy (range = 0.81-0.97) varied among years. Detection probability was affected by inclusion of a within-season time-specific covariate, call type, and breeding stage. In 2004 and 2005 we used survey results to assess the effect that number of sample locations, double sampling, and discontinued sampling had on parameter estimates. We found that estimates of probability of detection and proportion of sites occupied were similar across different sampling strategies, and we suggest ways to reduce sampling effort in a monitoring program.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Wildlife Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2193/2006-013","issn":"00225","usgsCitation":"Henneman, C., McLeod, M., and Andersen, D., 2007, Red-shouldered hawk occupancy surveys in central Minnesota, USA: Journal of Wildlife Management, v. 71, no. 2, p. 526-533, https://doi.org/10.2193/2006-013.","startPage":"526","endPage":"533","numberOfPages":"8","costCenters":[],"links":[{"id":211950,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2193/2006-013"},{"id":239338,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"71","issue":"2","noUsgsAuthors":false,"publicationDate":"2010-12-13","publicationStatus":"PW","scienceBaseUri":"50e4a3a0e4b0e8fec6cdb8de","contributors":{"authors":[{"text":"Henneman, C.","contributorId":64879,"corporation":false,"usgs":true,"family":"Henneman","given":"C.","affiliations":[],"preferred":false,"id":426816,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McLeod, M.A.","contributorId":66437,"corporation":false,"usgs":true,"family":"McLeod","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":426817,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Andersen, D. E.","contributorId":27816,"corporation":false,"usgs":true,"family":"Andersen","given":"D. E.","affiliations":[],"preferred":false,"id":426815,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030212,"text":"70030212 - 2007 - Sub-sampling genetic data to estimate black bear population size: A case study","interactions":[],"lastModifiedDate":"2021-06-11T18:04:08.647347","indexId":"70030212","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3671,"text":"Ursus","active":true,"publicationSubtype":{"id":10}},"title":"Sub-sampling genetic data to estimate black bear population size: A case study","docAbstract":"<p>Costs for genetic analysis of hair samples collected for individual identification of bears average approximately US$50 [2004] per sample. This can easily exceed budgetary allowances for large-scale studies or studies of high-density bear populations. We used 2 genetic datasets from 2 areas in the southeastern United States to explore how reducing costs of analysis by sub-sampling affected precision and accuracy of resulting population estimates. We used several sub-sampling scenarios to create subsets of the full datasets and compared summary statistics, population estimates, and precision of estimates generated from these subsets to estimates generated from the complete datasets. Our results suggested that bias and precision of estimates improved as the proportion of total samples used increased, and heterogeneity models (e.g., <i>M<sub>h</sub></i><sub><span>[</span>C<span>hao]</span></sub>) were more robust to reduced sample sizes than other models (e.g., behavior models). We recommend that only high-quality samples (&gt;5 hair follicles) be used when budgets are constrained, and efforts should be made to maximize capture and recapture rates in the field.</p>","largerWorkTitle":"Ursus","language":"English","publisher":"BioOne Complete","doi":"10.2192/1537-6176(2007)18[179:SGDTEB]2.0.CO;2","usgsCitation":"Tredick, C., Vaughan, M., Stauffer, D., Simek, S., and Eason, T., 2007, Sub-sampling genetic data to estimate black bear population size: A case study: Ursus, v. 18, no. 2, p. 179-188, https://doi.org/10.2192/1537-6176(2007)18[179:SGDTEB]2.0.CO;2.","productDescription":"10 p.","startPage":"179","endPage":"188","costCenters":[],"links":[{"id":239293,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"southeastern United States","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -94.04296874999999,\n              31.353636941500987\n            ],\n            [\n              -93.515625,\n              29.38217507514529\n            ],\n            [\n              -89.56054687499999,\n              29.075375179558346\n            ],\n            [\n              -85.69335937499999,\n              29.53522956294847\n            ],\n            [\n              -83.056640625,\n              27.21555620902969\n            ],\n            [\n              -80.947265625,\n              24.926294766395593\n            ],\n            [\n              -79.541015625,\n              26.27371402440643\n            ],\n            [\n              -80.68359375,\n              31.12819929911196\n            ],\n            [\n              -75.41015624999999,\n              35.67514743608467\n            ],\n            [\n              -77.080078125,\n              39.095962936305476\n            ],\n            [\n              -79.365234375,\n              38.47939467327645\n            ],\n            [\n              -81.5625,\n              37.23032838760387\n            ],\n            [\n              -84.0234375,\n              39.027718840211605\n            ],\n            [\n              -87.71484375,\n              37.78808138412046\n            ],\n            [\n              -89.384765625,\n              36.527294814546245\n            ],\n            [\n              -94.5703125,\n              36.59788913307022\n            ],\n            [\n              -94.04296874999999,\n              31.353636941500987\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"18","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9cf6e4b08c986b31d563","contributors":{"authors":[{"text":"Tredick, C.A.","contributorId":57659,"corporation":false,"usgs":true,"family":"Tredick","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":426145,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vaughan, M.R.","contributorId":74925,"corporation":false,"usgs":true,"family":"Vaughan","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":426146,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stauffer, D.F.","contributorId":9317,"corporation":false,"usgs":true,"family":"Stauffer","given":"D.F.","email":"","affiliations":[],"preferred":false,"id":426143,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Simek, S.L.","contributorId":13033,"corporation":false,"usgs":true,"family":"Simek","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":426144,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Eason, T.","contributorId":106705,"corporation":false,"usgs":true,"family":"Eason","given":"T.","affiliations":[],"preferred":false,"id":426147,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70033579,"text":"70033579 - 2007 - Dynamics of newly established elk populations","interactions":[],"lastModifiedDate":"2018-01-05T10:49:35","indexId":"70033579","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Dynamics of newly established elk populations","docAbstract":"The dynamics of newly established elk (Cervus elaphus) populations can provide insights about maximum sustainable rates of reproduction, survival, and increase. However, data used to estimate rates of increase typically have been limited to counts and rarely have included complementary estimates of vital rates. Complexities of population dynamics cannot be understood without considering population processes as well as population states. We estimated pregnancy rates, survival rates, age ratios, and sex ratios for reintroduced elk at Theodore Roosevelt National Park, North Dakota, USA; combined vital rates in a population projection model; and compared model projections with observed elk numbers and population ratios. Pregnancy rates in January (early in the second trimester of pregnancy) averaged 54.1% (SE = 5.4%) for subadults and 91.0% (SE = 1.7%) for adults, and 91.6% of pregnancies resulted in recruitment at 8 months. Annual survival rates of adult females averaged 0.96 (95% CI = 0.94-0.98) with hunting included and 0.99 (95% CI = 0.97-0.99) with hunting excluded from calculations. Our fitted model explained 99.8% of past variation in population estimates and represents a useful new tool for short-term management planning. Although we found no evidence of temporal variation in vital rates, variation in population composition caused substantial variation in projected rates of increase (??=1.20-1.36). Restoring documented hunter harvests and removals of elk by the National Park Service led to a potential rate of ?? = 1.26. Greater rates of increase substantiated elsewhere were within the expected range of chance variation, given our model and estimates of vital rates. Rates of increase realized by small elk populations are too variable to support inferences about habitat quality or density dependence.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Wildlife Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2193/2006-247","issn":"00225","usgsCitation":"Sargeant, G., and Oehler, M., 2007, Dynamics of newly established elk populations: Journal of Wildlife Management, v. 71, no. 4, p. 1141-1148, https://doi.org/10.2193/2006-247.","productDescription":"8 p.","startPage":"1141","endPage":"1148","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":242089,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214366,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2193/2006-247"}],"volume":"71","issue":"4","noUsgsAuthors":false,"publicationDate":"2010-12-13","publicationStatus":"PW","scienceBaseUri":"505a0435e4b0c8380cd50858","contributors":{"authors":[{"text":"Sargeant, G.A.","contributorId":51681,"corporation":false,"usgs":true,"family":"Sargeant","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":441517,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Oehler, M.W. Sr.","contributorId":105545,"corporation":false,"usgs":true,"family":"Oehler","given":"M.W.","suffix":"Sr.","email":"","affiliations":[],"preferred":false,"id":441518,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029840,"text":"70029840 - 2007 - Temporal changes in surface-water insecticide concentrations after the phaseout of diazinon and chlorpyrifos","interactions":[],"lastModifiedDate":"2020-09-10T16:36:03.870789","indexId":"70029840","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":"Temporal changes in surface-water insecticide concentrations after the phaseout of diazinon and chlorpyrifos","docAbstract":"<p><span>The recent (late 2001) federally mandated phaseout of diazinon and chlorpyrifos insecticide use in outdoor urban settings has resulted in a rapid decline in concentrations of these insecticides in urban streams and rivers in the northeastern and midwestern United States. Assessment of temporal insecticide trends at 20 sites showed that significant step decreases in diazinon concentrations occurred at 90% of the sites after the phaseout, with concentrations generally decreasing by over 50% in summer samples. Chlorpyrifos concentrations showed significant step decreases in at least 1 season at 3 of the 4 sites with sufficient data for analysis. The decrease in diazinon concentrations in response to the phaseout resulted in a decline in the frequency of concentrations exceeding the acute invertebrate water-quality benchmark of 0.1 μg/L from 10% of pre-phaseout summer samples to fewer than 1% of post-phaseout summer samples. Although some studies have indicated an increase in concentrations of carbaryl in response to the organophosphorous phaseout, carbaryl concentrations only increased at 1 site after the phaseout. A full assessment of the effect of the phaseout of diazinon and chlorpyrifos on surface water will require data on other insecticides used to replace these compounds.</span></p>","language":"English","publisher":"ACS Publications","doi":"10.1021/es070301","usgsCitation":"Phillips, P.J., Ator, S., and Nystrom, E., 2007, Temporal changes in surface-water insecticide concentrations after the phaseout of diazinon and chlorpyrifos: Environmental Science & Technology, v. 41, no. 12, p. 4246-4251, https://doi.org/10.1021/es070301.","productDescription":"6 p.","startPage":"4246","endPage":"4251","numberOfPages":"6","costCenters":[],"links":[{"id":240351,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"41","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba503e4b08c986b320742","contributors":{"authors":[{"text":"Phillips, P. J.","contributorId":31728,"corporation":false,"usgs":true,"family":"Phillips","given":"P.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":424546,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ator, S.W. 0000-0002-9186-4837","orcid":"https://orcid.org/0000-0002-9186-4837","contributorId":104100,"corporation":false,"usgs":true,"family":"Ator","given":"S.W.","affiliations":[],"preferred":false,"id":424548,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nystrom, E.A.","contributorId":85749,"corporation":false,"usgs":true,"family":"Nystrom","given":"E.A.","email":"","affiliations":[],"preferred":false,"id":424547,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70033408,"text":"70033408 - 2007 - Landscape correlates along mourning dove call-count routes in Mississippi","interactions":[],"lastModifiedDate":"2012-03-12T17:21:38","indexId":"70033408","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Landscape correlates along mourning dove call-count routes in Mississippi","docAbstract":"Mourning dove (Zenaida macroura) call-count surveys in Mississippi, USA, suggest declining populations. We used available mourning dove call-count data to evaluate long-term mourning dove habitat relationships. Dove routes were located in the Mississippi Alluvial Valley, Deep Loess Province, Mid Coastal Plain, and Hilly Coastal Plain physiographic provinces of Mississippi. We also included routes in the Blackbelt Prairie region of Mississippi and Alabama, USA. We characterized landscape structure and composition within 1.64-km buffers around 10 selected mourning dove call-count routes during 3 time periods. Habitat classes included agriculture, forest, urban, regeneration stands, wetland, and woodlot. We used Akaike's Information Criterion to select the best candidate model. We selected a model containing percent agriculture and edge density that contained approximately 40% of the total variability in the data set. Percent agriculture was positively correlated with relative dove abundance. Interestingly, we found a negative relationship between edge density and dove abundance. Researchers should conduct future research on dove nesting patterns in Mississippi and threshold levels of edge necessary to maximize dove density. During the last 20 years, Mississippi lost more than 800,000 ha of cropland while forest cover represented largely by pine (Pinus taeda) plantations increased by more than 364,000 ha. Our results suggest observed localized declines in mourning dove abundance in Mississippi may be related to the documented conversion of agricultural lands to pine plantations.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Wildlife Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2193/2004-267","issn":"00225","usgsCitation":"Elmore, R., Vilella, F., and Gerard, P., 2007, Landscape correlates along mourning dove call-count routes in Mississippi: Journal of Wildlife Management, v. 71, no. 2, p. 422-427, https://doi.org/10.2193/2004-267.","startPage":"422","endPage":"427","numberOfPages":"6","costCenters":[],"links":[{"id":213142,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2193/2004-267"},{"id":240737,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"71","issue":"2","noUsgsAuthors":false,"publicationDate":"2010-12-13","publicationStatus":"PW","scienceBaseUri":"505a4409e4b0c8380cd667d2","contributors":{"authors":[{"text":"Elmore, R.D.","contributorId":64450,"corporation":false,"usgs":true,"family":"Elmore","given":"R.D.","email":"","affiliations":[],"preferred":false,"id":440746,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vilella, F. J.","contributorId":82025,"corporation":false,"usgs":false,"family":"Vilella","given":"F. J.","affiliations":[],"preferred":false,"id":440747,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gerard, P.D.","contributorId":16368,"corporation":false,"usgs":true,"family":"Gerard","given":"P.D.","email":"","affiliations":[],"preferred":false,"id":440745,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029843,"text":"70029843 - 2007 - Porphyry copper deposit tract definition - A global analysis comparing geologic map scales","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029843","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":"Porphyry copper deposit tract definition - A global analysis comparing geologic map scales","docAbstract":"Geologic maps are a fundamental data source used to define mineral-resource potential tracts for the first step of a mineral resource assessment. Further, it is generally believed that the scale of the geologic map is a critical consideration. Previously published research has demonstrated that the U.S. Geological Survey porphyry tracts identified for the United States, which are based on 1:500,000-scale geology and larger scale data and published at 1:1,000,000 scale, can be approximated using a more generalized 1:2,500,000-scale geologic map. Comparison of the USGS porphyry tracts for the United States with weights-of-evidence models made using a 1:10,000,000-scale geologic map, which was made for petroleum applications, and a 1:35,000,000-scale geologic map, which was created as context for the distribution of porphyry deposits, demonstrates that, again, the USGS US porphyry tracts identified are similar to tracts defined on features from these small scale maps. In fact, the results using the 1:35,000,000-scale map show a slightly higher correlation with the USGS US tract definition, probably because the conceptual context for this small-scale map is more appropriate for porphyry tract definition than either of the other maps. This finding demonstrates that geologic maps are conceptual maps. The map information shown in each map is selected and generalized for the map to display the concepts deemed important for the map maker's purpose. Some geologic maps of small scale prove to be useful for regional mineral-resource tract definition, despite the decrease in spatial accuracy with decreasing scale. The utility of a particular geologic map for a particular application is critically dependent on the alignment of the intention of the map maker with the application. ?? 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/s11053-007-9042-9","issn":"15207439","usgsCitation":"Raines, G.L., Connors, K., and Chorlton, L., 2007, Porphyry copper deposit tract definition - A global analysis comparing geologic map scales: Natural Resources Research, v. 16, no. 2, p. 191-198, https://doi.org/10.1007/s11053-007-9042-9.","startPage":"191","endPage":"198","numberOfPages":"8","costCenters":[],"links":[{"id":212864,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11053-007-9042-9"},{"id":240421,"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":"505a7de6e4b0c8380cd7a219","contributors":{"authors":[{"text":"Raines, G. L.","contributorId":90720,"corporation":false,"usgs":true,"family":"Raines","given":"G.","middleInitial":"L.","affiliations":[],"preferred":false,"id":424562,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Connors, K.A.","contributorId":60024,"corporation":false,"usgs":true,"family":"Connors","given":"K.A.","email":"","affiliations":[],"preferred":false,"id":424561,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Chorlton, L.B.","contributorId":40806,"corporation":false,"usgs":true,"family":"Chorlton","given":"L.B.","email":"","affiliations":[],"preferred":false,"id":424560,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"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}]}}
,{"id":70029859,"text":"70029859 - 2007 - Numerical dating of a Late Quaternary spit-shoreline complex at the northern end of Silver Lake playa, Mojave Desert, California: A comparison of the applicability of radiocarbon, luminescence, terrestrial cosmogenic nuclide, electron spin resonance, U-series and amino acid racemization methods","interactions":[],"lastModifiedDate":"2012-03-12T17:21:35","indexId":"70029859","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3217,"text":"Quaternary International","active":true,"publicationSubtype":{"id":10}},"title":"Numerical dating of a Late Quaternary spit-shoreline complex at the northern end of Silver Lake playa, Mojave Desert, California: A comparison of the applicability of radiocarbon, luminescence, terrestrial cosmogenic nuclide, electron spin resonance, U-series and amino acid racemization methods","docAbstract":"A Late Quaternary spit-shoreline complex on the northern shore of Pleistocene Lake Mojave of southeastern California, USA was studied with the goal of comparing accelerator mass spectrometry (AMS) radiocarbon, luminescence, electron spin resonance (ESR), terrestrial cosmogenic radionuclide (TCN) surface exposure, amino acid racemization (AAR) and U-series dating methods. The pattern of ages obtained by the different methods illustrates the complexity of processes acting in the lakeshore environment and highlights the utility of a multi-method approach. TCN surface exposure ages (mostly ???20-30 ka) record the initial erosion of shoreline benches, whereas radiocarbon ages on shells (determined in this and previous studies) within the spit, supported by AAR data, record its construction at fluctuating lake levels from ???16 to 10 ka. Luminescence ages on spit sediment (???6-7 ka) and ESR ages on spit shells (???4 ka) are anomalously young relative to radiocarbon ages of shells within the same deposits. The significance of the surprisingly young luminescence ages is not clear. The younger ESR ages could be a consequence of post-mortem enrichment of U in the shells. High concentrations of detrital thorium in tufa coating spit gravels inhibited the use of single-sample U-series dating. Detailed comparisons such as this provide one of the few means of assessing the accuracy of Quaternary dating techniques. More such comparisons are needed. ?? 2007 Elsevier Ltd and INQUA.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Quaternary International","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.quaint.2007.01.001","issn":"10406182","usgsCitation":"Owen, L., Bright, J., Finkel, R., Jaiswal, M., Kaufman, D.S., Mahan, S., Radtke, U., Schneider, J., Sharp, W., Singhvi, A., and Warren, C., 2007, Numerical dating of a Late Quaternary spit-shoreline complex at the northern end of Silver Lake playa, Mojave Desert, California: A comparison of the applicability of radiocarbon, luminescence, terrestrial cosmogenic nuclide, electron spin resonance, U-series and amino acid racemization methods: Quaternary International, v. 166, no. 1, p. 87-110, https://doi.org/10.1016/j.quaint.2007.01.001.","startPage":"87","endPage":"110","numberOfPages":"24","costCenters":[],"links":[{"id":213093,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.quaint.2007.01.001"},{"id":240682,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"166","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a68ebe4b0c8380cd73a82","contributors":{"authors":[{"text":"Owen, L.A.","contributorId":94836,"corporation":false,"usgs":true,"family":"Owen","given":"L.A.","email":"","affiliations":[],"preferred":false,"id":424631,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bright, Jordon","contributorId":63981,"corporation":false,"usgs":false,"family":"Bright","given":"Jordon","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":424628,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Finkel, R.C.","contributorId":79677,"corporation":false,"usgs":true,"family":"Finkel","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":424630,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jaiswal, M.K.","contributorId":18183,"corporation":false,"usgs":true,"family":"Jaiswal","given":"M.K.","email":"","affiliations":[],"preferred":false,"id":424624,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kaufman, D. S.","contributorId":18006,"corporation":false,"usgs":false,"family":"Kaufman","given":"D.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":424623,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Mahan, S.","contributorId":98894,"corporation":false,"usgs":true,"family":"Mahan","given":"S.","email":"","affiliations":[],"preferred":false,"id":424632,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Radtke, U.","contributorId":9003,"corporation":false,"usgs":true,"family":"Radtke","given":"U.","email":"","affiliations":[],"preferred":false,"id":424622,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Schneider, J.S.","contributorId":57271,"corporation":false,"usgs":true,"family":"Schneider","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":424626,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Sharp, W.","contributorId":52402,"corporation":false,"usgs":true,"family":"Sharp","given":"W.","affiliations":[],"preferred":false,"id":424625,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Singhvi, A.K.","contributorId":64435,"corporation":false,"usgs":true,"family":"Singhvi","given":"A.K.","email":"","affiliations":[],"preferred":false,"id":424629,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Warren, C.N.","contributorId":63340,"corporation":false,"usgs":true,"family":"Warren","given":"C.N.","email":"","affiliations":[],"preferred":false,"id":424627,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}}
,{"id":70033149,"text":"70033149 - 2007 - Advantages of wet work for near-surface seismic reflection","interactions":[],"lastModifiedDate":"2012-03-12T17:21:38","indexId":"70033149","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Advantages of wet work for near-surface seismic reflection","docAbstract":"Benefits of shallow water settings (0.1 to 0.5 m) are pronounced on shallow, high-resolution seismic reflection images and, for examples discussed here, range from an order of magnitude increased signal-to-noise ratio to resolution potential elevated by more than 8 times. Overall data quality of high-resolution seismic reflection data at three sites notorious for poor near-surface reflection returns was improved by coupling the source and/or receivers to a well sorted and fully saturated surface. Half-period trace-to-trace static offsets evident in reflections from receivers planted into a creek bank were eliminated by moving the geophones to the base of a shallow creek at the toe of the bank. Reflections from a dipping bedrock were recorded with a dominant frequency approaching 1 KHz from hydrophones in 0.5 m of water at the toe of a dam using a hammer impact source. A tamper impacted by a dead blow hammer in a shallow (10-20 cm) deep creek produced reflections with a dominant frequency over 400 Hz at depths as shallow as 6 ms. ?? 2007 Society of Exploration Geophysicists.","largerWorkTitle":"SEG Technical Program Expanded Abstracts","language":"English","doi":"10.1190/1.2792615","issn":"10523812","usgsCitation":"Miller, R., Markiewicz, R., Rademacker, T., Hopkins, R., Rawcliffe, R., and Paquin, J., 2007, Advantages of wet work for near-surface seismic reflection, <i>in</i> SEG Technical Program Expanded Abstracts, v. 26, no. 1, p. 1147-1151, https://doi.org/10.1190/1.2792615.","startPage":"1147","endPage":"1151","numberOfPages":"5","costCenters":[],"links":[{"id":213531,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1190/1.2792615"},{"id":241161,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-09-14","publicationStatus":"PW","scienceBaseUri":"5059e709e4b0c8380cd477ef","contributors":{"authors":[{"text":"Miller, R. D.","contributorId":92693,"corporation":false,"usgs":true,"family":"Miller","given":"R. D.","affiliations":[],"preferred":false,"id":439581,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Markiewicz, R.D.","contributorId":40431,"corporation":false,"usgs":true,"family":"Markiewicz","given":"R.D.","email":"","affiliations":[],"preferred":false,"id":439578,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rademacker, T.R.","contributorId":64461,"corporation":false,"usgs":true,"family":"Rademacker","given":"T.R.","email":"","affiliations":[],"preferred":false,"id":439579,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hopkins, R.","contributorId":105128,"corporation":false,"usgs":true,"family":"Hopkins","given":"R.","affiliations":[],"preferred":false,"id":439582,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Rawcliffe, R.J.","contributorId":67733,"corporation":false,"usgs":true,"family":"Rawcliffe","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":439580,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Paquin, J.","contributorId":15019,"corporation":false,"usgs":true,"family":"Paquin","given":"J.","email":"","affiliations":[],"preferred":false,"id":439577,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
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