{"pageNumber":"876","pageRowStart":"21875","pageSize":"25","recordCount":46733,"records":[{"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":70031066,"text":"70031066 - 2007 - A unified equation for calculating methane vapor pressures in the CH4-H2O system with measured Raman shifts","interactions":[],"lastModifiedDate":"2012-03-12T17:21:16","indexId":"70031066","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"A unified equation for calculating methane vapor pressures in the CH4-H2O system with measured Raman shifts","docAbstract":"A unified equation has been derived by using all available data for calculating methane vapor pressures with measured Raman shifts of C-H symmetric stretching band (??1) in the vapor phase of sample fluids near room temperature. This equation eliminates discrepancies among the existing data sets and can be applied at any Raman laboratory. Raman shifts of C-H symmetric stretching band of methane in the vapor phase of CH4-H2O mixtures prepared in a high-pressure optical cell were also measured at temperatures between room temperature and 200 ??C, and pressures up to 37 MPa. The results show that the CH4 ??1 band position shifts to higher wavenumber as temperature increases. We also demonstrated that this Raman band shift is a simple function of methane vapor density, and, therefore, when combined with equation of state of methane, methane vapor pressures in the sample fluids at elevated temperatures can be calculated from measured Raman peak positions. This method can be applied to determine the pressure of CH4-bearing systems, such as methane-rich fluid inclusions from sedimentary basins or experimental fluids in hydrothermal diamond-anvil cell or other types of optical cell. ?? 2007 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geochimica et Cosmochimica Acta","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.gca.2007.06.004","issn":"00167037","usgsCitation":"Lu, W., Chou, I., Burruss, R., and Song, Y., 2007, A unified equation for calculating methane vapor pressures in the CH4-H2O system with measured Raman shifts: Geochimica et Cosmochimica Acta, v. 71, no. 16, p. 3969-3978, https://doi.org/10.1016/j.gca.2007.06.004.","startPage":"3969","endPage":"3978","numberOfPages":"10","costCenters":[],"links":[{"id":211483,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.gca.2007.06.004"},{"id":238778,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"71","issue":"16","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e60ae4b0c8380cd47111","contributors":{"authors":[{"text":"Lu, W.","contributorId":47576,"corporation":false,"usgs":true,"family":"Lu","given":"W.","email":"","affiliations":[],"preferred":false,"id":429893,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chou, I.-M. 0000-0001-5233-6479","orcid":"https://orcid.org/0000-0001-5233-6479","contributorId":44283,"corporation":false,"usgs":true,"family":"Chou","given":"I.-M.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":429892,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Burruss, R.C. 0000-0001-6827-804X","orcid":"https://orcid.org/0000-0001-6827-804X","contributorId":99574,"corporation":false,"usgs":true,"family":"Burruss","given":"R.C.","affiliations":[],"preferred":false,"id":429895,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Song, Y.","contributorId":92443,"corporation":false,"usgs":true,"family":"Song","given":"Y.","email":"","affiliations":[],"preferred":false,"id":429894,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031070,"text":"70031070 - 2007 - Mercury accumulation in periphyton of eight river ecosystems","interactions":[],"lastModifiedDate":"2012-03-12T17:21:16","indexId":"70031070","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":"Mercury accumulation in periphyton of eight river ecosystems","docAbstract":"In 2003, the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) program and U.S. Environmental Protection Agency studied total mercury (THg) and methylmercury (MeHg) concentrations in periphyton at eight rivers in the United States in coordination with a larger USGS study on mercury cycling in rivers. Periphyton samples were collected using trace element clean techniques and NAWQA sampling protocols in spring and fall from targeted habitats (streambed surface-sediment, cobble, or woody snags) at each river site. A positive correlation was observed between concentrations of THg and MeHg in periphyton (r2 = 0.88, in log-log space). Mean MeHg and THg concentrations in surface-sediment periphyton were significantly higher (1,333 ng/m2 for MeHg and 53,980 ng/m2 for THg) than cobble (64 ng/m2 for MeHg and 1,192 ng/m2 for THg) or woody snag (71 ng/m2 for MeHg and 1,089 ng/m2 for THg) periphyton. Concentrations of THg in surface-sediment periphyton had a strong positive correlation with concentrations of THg in sediment (dry weight). The ratio of MeHg:THg in surface-sediment periphyton increased with the ratio of MeHg:THg in sediment. These data suggest periphyton may play a key role in mercury bioaccumulation in river ecosystems. ?? 2007 American Water Resources Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the American Water Resources Association","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1752-1688.2007.00078.x","issn":"1093474X","usgsCitation":"Bell, A., and Scudder, B.C., 2007, Mercury accumulation in periphyton of eight river ecosystems: Journal of the American Water Resources Association, v. 43, no. 4, p. 957-968, https://doi.org/10.1111/j.1752-1688.2007.00078.x.","startPage":"957","endPage":"968","numberOfPages":"12","costCenters":[],"links":[{"id":211513,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2007.00078.x"},{"id":238812,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-06-28","publicationStatus":"PW","scienceBaseUri":"505a53d0e4b0c8380cd6cd1f","contributors":{"authors":[{"text":"Bell, A.H.","contributorId":90933,"corporation":false,"usgs":true,"family":"Bell","given":"A.H.","email":"","affiliations":[],"preferred":false,"id":429908,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Scudder, B. C.","contributorId":71588,"corporation":false,"usgs":true,"family":"Scudder","given":"B.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":429907,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031084,"text":"70031084 - 2007 - Water table fluctuations under three riparian land covers, Iowa (USA)","interactions":[],"lastModifiedDate":"2012-03-12T17:21:00","indexId":"70031084","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"title":"Water table fluctuations under three riparian land covers, Iowa (USA)","docAbstract":"Water table depth is known to play an important role in nitrogen cycling in riparian zones, but little detailed monitoring of water table fluctuations has been reported. In this study, results of high-resolution water table monitoring under three common riparian land covers (forest, cool season grass, corn) were analysed to gain a better understanding of the relation of vegetation cover to water table depth. Three riparian wells located at the Neal Smith National Wildlife Refuge in Jasper County, Iowa, were instrumented with data loggers to record hourly water table behaviour from July to December 2004. Water table depth under the forest showed a diurnal pattern of rising and falling water levels, whereas the grass and corn exhibited a stepped pattern of greater drawdown during the day and less drainage at night. Clear daytime and night-time water table signals were related to daily plant water demands and lateral groundwater flow. Using two estimates of specific yield, hourly and daily ET rates were estimated to be higher under the forest cover than the grass and corn, with peak ET rates in July ranging from 5.02 to 6.32 mm day-1 for forest and from 1.81 to 4.13 mm day-1 for corn and grass. Following plant senescence in October, water table declines were associated with lateral flow to Walnut Creek. The results from this study suggest that consideration should be given to monitoring water table behaviour more frequently to capture daily and seasonal patterns related to riparian vegetation type. Copyright ?? 2007 John Wiley & Sons, Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrological Processes","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/hyp.6393","issn":"08856087","usgsCitation":"Schilling, K.E., 2007, Water table fluctuations under three riparian land covers, Iowa (USA): Hydrological Processes, v. 21, no. 18, p. 2415-2424, https://doi.org/10.1002/hyp.6393.","startPage":"2415","endPage":"2424","numberOfPages":"10","costCenters":[],"links":[{"id":239010,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211674,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/hyp.6393"}],"volume":"21","issue":"18","noUsgsAuthors":false,"publicationDate":"2007-01-30","publicationStatus":"PW","scienceBaseUri":"505bcc8ce4b08c986b32dbdc","contributors":{"authors":[{"text":"Schilling, K. E.","contributorId":61982,"corporation":false,"usgs":true,"family":"Schilling","given":"K.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":429954,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70031085,"text":"70031085 - 2007 - Revisiting the cape cod bacteria injection experiment using a stochastic modeling approach","interactions":[],"lastModifiedDate":"2018-10-17T11:32:08","indexId":"70031085","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":"Revisiting the cape cod bacteria injection experiment using a stochastic modeling approach","docAbstract":"<p>Bromide and resting-cell bacteria tracer tests conducted in a sandy aquifer at the U.S. Geological Survey Cape Cod site in 1987 were reinterpreted using a three-dimensional stochastic approach. Bacteria transport was coupled to colloid filtration theory through functional dependence of local-scale colloid transport parameters upon hydraulic conductivity and seepage velocity in a stochastic advection - dispersion/attachment - detachment model. Geostatistical information on the hydraulic conductivity (K) field that was unavailable at the time of the original test was utilized as input. Using geostatistical parameters, a groundwater flow and particle-tracking model of conservative solute transport was calibrated to the bromide-tracer breakthrough data. An optimization routine was employed over 100 realizations to adjust the mean and variance ofthe natural-logarithm of hydraulic conductivity (InK) field to achieve best fit of a simulated, average bromide breakthrough curve. A stochastic particle-tracking model for the bacteria was run without adjustments to the local-scale colloid transport parameters. Good predictions of mean bacteria breakthrough were achieved using several approaches for modeling components of the system. Simulations incorporating the recent Tufenkji and Elimelech (Environ. Sci. Technol. 2004, 38, 529-536) correlation equation for estimating single collector efficiency were compared to those using the older Rajagopalan and Tien (AIChE J. 1976, 22, 523-533) model. Both appeared to work equally well at predicting mean bacteria breakthrough using a constant mean bacteria diameter for this set of field conditions. Simulations using a distribution of bacterial cell diameters available from original field notes yielded a slight improvement in the model and data agreement compared to simulations using an average bacterial diameter. The stochastic approach based on estimates of local-scale parameters for the bacteria-transport process reasonably captured the mean bacteria transport behavior and calculated an envelope of uncertainty that bracketed the observations in most simulation cases.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Science and Technology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Chemical Society","doi":"10.1021/es062693a","issn":"0013936X","usgsCitation":"Maxwell, R.M., Welty, C., and Harvey, R.W., 2007, Revisiting the cape cod bacteria injection experiment using a stochastic modeling approach: Environmental Science & Technology, v. 41, no. 15, p. 5548-5558, https://doi.org/10.1021/es062693a.","productDescription":"11 p.","startPage":"5548","endPage":"5558","numberOfPages":"11","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":486982,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://figshare.com/articles/journal_contribution/Revisiting_the_Cape_Cod_Bacteria_Injection_Experiment_Using_a_Stochastic_Modeling_Approach/2993503","text":"External Repository"},{"id":239045,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211703,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es062693a"}],"country":"United States","state":"Massachusetts","otherGeospatial":"Cape Cod","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -70.69427490234375,\n              41.509605687197975\n            ],\n            [\n              -70.69427490234375,\n              42.10943017110108\n            ],\n            [\n              -69.90463256835938,\n              42.10943017110108\n            ],\n            [\n              -69.90463256835938,\n              41.509605687197975\n            ],\n            [\n              -70.69427490234375,\n              41.509605687197975\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"41","issue":"15","noUsgsAuthors":false,"publicationDate":"2007-06-30","publicationStatus":"PW","scienceBaseUri":"505aad2de4b0c8380cd86e4e","contributors":{"authors":[{"text":"Maxwell, Reed M.","contributorId":95373,"corporation":false,"usgs":true,"family":"Maxwell","given":"Reed","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":429956,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Welty, Claire","contributorId":39416,"corporation":false,"usgs":true,"family":"Welty","given":"Claire","email":"","affiliations":[],"preferred":false,"id":429957,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Harvey, Ronald W. 0000-0002-2791-8503 rwharvey@usgs.gov","orcid":"https://orcid.org/0000-0002-2791-8503","contributorId":564,"corporation":false,"usgs":true,"family":"Harvey","given":"Ronald","email":"rwharvey@usgs.gov","middleInitial":"W.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":429955,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031103,"text":"70031103 - 2007 - Differential impacts of the southern pine beetle, Dendroctonus frontalis, on Pinus palustris and Pinus taeda","interactions":[],"lastModifiedDate":"2012-03-12T17:21:16","indexId":"70031103","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1170,"text":"Canadian Journal of Forest Research","active":true,"publicationSubtype":{"id":10}},"title":"Differential impacts of the southern pine beetle, Dendroctonus frontalis, on Pinus palustris and Pinus taeda","docAbstract":"Patterns of host use by herbivore pests can have serious consequences for natural and managed ecosystems but are often poorly understood. Here, we provide the first quantification of large differential impacts of the southern pine beetle, Dendroctonus frontalis Zimmermann, on loblolly pine, Pinus taeda L., and longleaf pine, Pinus palustris P. Mill., and evaluate putative mechanisms for the disparity. Spatially extensive survey data from recent epidemics indicate that, per square kilometre, stands of loblolly versus longleaf pine in four forests (380-1273 km2) sustained 3-18 times more local infestations and 3-116 times more tree mortality. Differences were not attributable to size or age structure of pine stands. Using pheromone-baited traps, we found no differences in the abundance of dispersing D. frontalis or its predator Thanasimus dubius Fabricius between loblolly and longleaf stands. Trapping triggered numerous attacks on trees, but the pine species did not differ in the probability of attack initiation or in the surface area of bark attacked by growing aggregations. We found no evidence for postaggregation mechanisms of discrimination or differential success on the two hosts, suggesting that early colonizers discriminate between host species before a pheromone plume is present. ?? 2007 NRC.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Canadian Journal of Forest Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1139/X07-008","issn":"00455067","usgsCitation":"Friedenberg, N., Whited, B., Slone, D., Martinson, S., and Ayres, M., 2007, Differential impacts of the southern pine beetle, Dendroctonus frontalis, on Pinus palustris and Pinus taeda: Canadian Journal of Forest Research, v. 37, no. 8, p. 1427-1437, https://doi.org/10.1139/X07-008.","startPage":"1427","endPage":"1437","numberOfPages":"11","costCenters":[],"links":[{"id":211485,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1139/X07-008"},{"id":238781,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"37","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a00fbe4b0c8380cd4fa1b","contributors":{"authors":[{"text":"Friedenberg, N.A.","contributorId":51092,"corporation":false,"usgs":true,"family":"Friedenberg","given":"N.A.","email":"","affiliations":[],"preferred":false,"id":430050,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Whited, B.M.","contributorId":40799,"corporation":false,"usgs":true,"family":"Whited","given":"B.M.","email":"","affiliations":[],"preferred":false,"id":430049,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Slone, D. H. 0000-0002-9903-9727","orcid":"https://orcid.org/0000-0002-9903-9727","contributorId":33040,"corporation":false,"usgs":true,"family":"Slone","given":"D. H.","affiliations":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"preferred":true,"id":430048,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Martinson, S.J.","contributorId":28802,"corporation":false,"usgs":true,"family":"Martinson","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":430047,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ayres, M.P.","contributorId":63608,"corporation":false,"usgs":true,"family":"Ayres","given":"M.P.","email":"","affiliations":[],"preferred":false,"id":430051,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031107,"text":"70031107 - 2007 - Revised landsat-5 thematic mapper radiometric calibration","interactions":[],"lastModifiedDate":"2017-04-14T13:23:14","indexId":"70031107","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1940,"text":"IEEE Geoscience and Remote Sensing Letters","active":true,"publicationSubtype":{"id":10}},"title":"Revised landsat-5 thematic mapper radiometric calibration","docAbstract":"<p><span>Effective April 2, 2007, the radiometric calibration of Landsat-5 (L5) Thematic Mapper (TM) data that are processed and distributed by the U.S. Geological Survey (USGS) Center for Earth Resources Observation and Science (EROS) will be updated. The lifetime gain model that was implemented on May 5, 2003, for the reflective bands (1-5, 7) will be replaced by a new lifetime radiometric-calibration curve that is derived from the instrument's response to pseudoinvariant desert sites and from cross calibration with the Landsat-7 (L7) Enhanced TM Plus (ETM+). Although this calibration update applies to all archived and future L5 TM data, the principal improvements in the calibration are for the data acquired during the first eight years of the mission (1984-1991), where the changes in the instrument-gain values are as much as 15%. The radiometric scaling coefficients for bands 1 and 2 for approximately the first eight years of the mission have also been changed. Users will need to apply these new coefficients to convert the calibrated data product digital numbers to radiance. The scaling coefficients for the other bands have not changed.</span></p>","language":"English","publisher":"IEEE","doi":"10.1109/LGRS.2007.898285","issn":"1545598X","usgsCitation":"Chander, G., Markham, B.L., and Barsi, J., 2007, Revised landsat-5 thematic mapper radiometric calibration: IEEE Geoscience and Remote Sensing Letters, v. 4, no. 3, p. 490-494, https://doi.org/10.1109/LGRS.2007.898285.","productDescription":"5 p.","startPage":"490","endPage":"494","numberOfPages":"5","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":238875,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211568,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1109/LGRS.2007.898285"}],"volume":"4","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aacc4e4b0c8380cd86dc5","contributors":{"authors":[{"text":"Chander, G.","contributorId":51449,"corporation":false,"usgs":true,"family":"Chander","given":"G.","affiliations":[],"preferred":false,"id":430063,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Markham, B. L.","contributorId":88872,"corporation":false,"usgs":true,"family":"Markham","given":"B.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":430064,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Barsi, J. A.","contributorId":24085,"corporation":false,"usgs":true,"family":"Barsi","given":"J. A.","affiliations":[],"preferred":false,"id":430062,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031112,"text":"70031112 - 2007 - Use of a wetland index to evaluate changes in riparian vegetation after livestock exclusion","interactions":[],"lastModifiedDate":"2015-12-16T14:26:48","indexId":"70031112","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":"Use of a wetland index to evaluate changes in riparian vegetation after livestock exclusion","docAbstract":"<p>A method was developed to characterize ecological integrity of riparian sites based on the abundance of hydric species. This wetland index can be calculated with species data, or with community type data as performed here. Classified riparian community types were used to describe vegetation at 14 livestock exclosures and adjacent grazed areas. Community type wetland index values were generated and used to calculate site wetland index values. It was hypothesized that removal of livestock would result in higher wetland index values because of release from herbivory and decreased physical disturbance of vegetation, streambanks, and soil. The wetland index for exclosures was about 12% higher than grazed sites; differences were statistically significant (p &lt; 0.01) based on paired t-tests. The increase in hydric vegetation after livestock exclusion may have contributed to the greater bank stability (p = 0.002) and smaller width-to-depth ratio (p = 0.005) in exclosures. Challenges were encountered in using community types to describe and compare site vegetation, which could be avoided with species data collection. The wetland index can be a tool to monitor sites over time, compare sites with similar environments, or compare sites for which environmental differences can be accounted. </p>","language":"English","publisher":"American Water Resources Association","doi":"10.1111/j.1752-1688.2007.00058.x","issn":"1093474X","usgsCitation":"Coles-Ritchie, M.C., Roberts, D., Kershner, J.L., and Henderson, R., 2007, Use of a wetland index to evaluate changes in riparian vegetation after livestock exclusion: Journal of the American Water Resources Association, v. 43, no. 3, p. 731-743, https://doi.org/10.1111/j.1752-1688.2007.00058.x.","productDescription":"13 p.","startPage":"731","endPage":"743","numberOfPages":"13","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"links":[{"id":477244,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1752-1688.2007.00058.x","text":"Publisher Index Page"},{"id":238912,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211597,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2007.00058.x"}],"volume":"43","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-05-14","publicationStatus":"PW","scienceBaseUri":"505bbea3e4b08c986b3296d1","contributors":{"authors":[{"text":"Coles-Ritchie, M. C.","contributorId":40418,"corporation":false,"usgs":true,"family":"Coles-Ritchie","given":"M.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":430079,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Roberts, D.W.","contributorId":11828,"corporation":false,"usgs":true,"family":"Roberts","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":430078,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kershner, J. L.","contributorId":100322,"corporation":false,"usgs":true,"family":"Kershner","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":430081,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Henderson, R.C.","contributorId":58986,"corporation":false,"usgs":true,"family":"Henderson","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":430080,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031114,"text":"70031114 - 2007 - Quantifying fluid and bed dynamics for characterizing benthic physical habitat in large rivers","interactions":[],"lastModifiedDate":"2016-06-01T15:19:29","indexId":"70031114","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2166,"text":"Journal of Applied Ichthyology","active":true,"publicationSubtype":{"id":10}},"title":"Quantifying fluid and bed dynamics for characterizing benthic physical habitat in large rivers","docAbstract":"<p>Sturgeon use benthic habitats in and adjacent to main channels where environmental conditions can include bedload sediment transport and high near-bed flow velocities. Bed velocity measurements obtained with acoustic Doppler instruments provide a means to assess the concentration and velocity of sediment moving near the streambed, and are thus indicative of the bedload sediment transport rate, the near-bed flow velocity, and the stability of the substrate. Acoustic assessments of benthic conditions in the Missouri River were conducted at scales ranging from the stream reach to individual bedforms. Reach-scale results show that spatially-averaged bed velocities in excess of 0.5 m s-1 frequently occur in the navigation channel. At the local scale, bed velocities are highest near bedform crests, and lowest in the troughs. Low-velocity zones can persist in areas with extremely high mean bed velocities. Use of these low-velocity zones may allow sturgeon to make use of portions of the channel where the average conditions near the bed are severe. To obtain bed velocity measurements of the highest possible quality, it is necessary to extract bottom-track and GPS velocity information from the raw ADCP data files on a ping-by-ping basis. However, bed velocity measured from a point can also be estimated using a simplified method that is more easily implemented in the context of routine monitoring. The method requires only the transect distance and direction data displayed in standard ADCP data-logging software. Bed velocity estimates obtained using this method are usually within 5-10% of estimates obtained from ping-by-ping processing. ?? 2007 Blackwell Verlag.</p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1439-0426.2007.00888.x","issn":"01758659","usgsCitation":"Gaeuman, D., and Jacobson, R., 2007, Quantifying fluid and bed dynamics for characterizing benthic physical habitat in large rivers: Journal of Applied Ichthyology, v. 23, no. 4, p. 359-364, https://doi.org/10.1111/j.1439-0426.2007.00888.x.","productDescription":"6 p.","startPage":"359","endPage":"364","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":477096,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1439-0426.2007.00888.x","text":"Publisher Index Page"},{"id":238945,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211625,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1439-0426.2007.00888.x"}],"volume":"23","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a91cbe4b0c8380cd80474","contributors":{"authors":[{"text":"Gaeuman, D.","contributorId":73807,"corporation":false,"usgs":true,"family":"Gaeuman","given":"D.","email":"","affiliations":[],"preferred":false,"id":430091,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jacobson, R. B. 0000-0002-8368-2064","orcid":"https://orcid.org/0000-0002-8368-2064","contributorId":92614,"corporation":false,"usgs":true,"family":"Jacobson","given":"R. B.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":true,"id":430092,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"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. L.","contributorId":100322,"corporation":false,"usgs":true,"family":"Kershner","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":430099,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"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":70031134,"text":"70031134 - 2007 - Comparison of 15 evaporation methods applied to a small mountain lake in the northeastern USA","interactions":[],"lastModifiedDate":"2018-10-16T10:12:17","indexId":"70031134","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Comparison of 15 evaporation methods applied to a small mountain lake in the northeastern USA","docAbstract":"<p>Few detailed evaporation studies exist for small lakes or reservoirs in mountainous settings. A detailed evaporation study was conducted at Mirror Lake, a 0.15 km2 lake in New Hampshire, northeastern USA, as part of a long-term investigation of lake hydrology. Evaporation was determined using 14 alternate evaporation methods during six open-water seasons and compared with values from the Bowen-ratio energy-budget (BREB) method, considered the standard. Values from the Priestley-Taylor, deBruin-Keijman, and Penman methods compared most favorably with BREB-determined values. Differences from BREB values averaged 0.19, 0.27, and 0.20 mm d-1, respectively, and results were within 20% of BREB values during more than 90% of the 37 monthly comparison periods. All three methods require measurement of net radiation, air temperature, change in heat stored in the lake, and vapor pressure, making them relatively data intensive. Several of the methods had substantial bias when compared with BREB values and were subsequently modified to eliminate bias. Methods that rely only on measurement of air temperature, or air temperature and solar radiation, were relatively cost-effective options for measuring evaporation at this small New England lake, outperforming some methods that require measurement of a greater number of variables. It is likely that the atmosphere above Mirror Lake was affected by occasional formation of separation eddies on the lee side of nearby high terrain, although those influences do not appear to be significant to measured evaporation from the lake when averaged over monthly periods.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.jhydrol.2007.03.018","issn":"00221694","usgsCitation":"Rosenberry, D.O., Winter, T.C., Buso, D., and Likens, G., 2007, Comparison of 15 evaporation methods applied to a small mountain lake in the northeastern USA: Journal of Hydrology, v. 340, no. 3-4, p. 149-166, https://doi.org/10.1016/j.jhydrol.2007.03.018.","productDescription":"18 p.","startPage":"149","endPage":"166","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":211430,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2007.03.018"},{"id":238716,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New Hampshire","otherGeospatial":"Mirror Lake","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -71.27243041992188,\n              43.628620426937886\n            ],\n            [\n              -71.27225875854492,\n              43.63035994642008\n            ],\n            [\n              -71.27157211303711,\n              43.631229687282\n            ],\n            [\n              -71.27037048339842,\n              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]\n}","volume":"340","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f83de4b0c8380cd4cf7c","contributors":{"authors":[{"text":"Rosenberry, Donald O. 0000-0003-0681-5641 rosenber@usgs.gov","orcid":"https://orcid.org/0000-0003-0681-5641","contributorId":1312,"corporation":false,"usgs":true,"family":"Rosenberry","given":"Donald","email":"rosenber@usgs.gov","middleInitial":"O.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":430188,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Winter, Thomas C.","contributorId":84736,"corporation":false,"usgs":true,"family":"Winter","given":"Thomas","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":430186,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Buso, D.C.","contributorId":31392,"corporation":false,"usgs":true,"family":"Buso","given":"D.C.","email":"","affiliations":[],"preferred":false,"id":430187,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Likens, G.E.","contributorId":68893,"corporation":false,"usgs":true,"family":"Likens","given":"G.E.","email":"","affiliations":[],"preferred":false,"id":430189,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031158,"text":"70031158 - 2007 - A critical review of three methods used for the measurement of mercury (Hg2+)-dissolved organic matter stability constants","interactions":[],"lastModifiedDate":"2018-10-17T08:22:57","indexId":"70031158","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"A critical review of three methods used for the measurement of mercury (Hg2+)-dissolved organic matter stability constants","docAbstract":"<p>Three experimental techniques - ion exchange, liquid-liquid extraction with competitive ligand exchange, and solid-phase extraction with competitive ligand exchange (CLE-SPE) - were evaluated as methods for determining conditional stability constants (K) for the binding of mercury (Hg2+) to dissolved organic matter (DOM). To determine the utility of a given method to measure stability constants at environmentally relevant experimental conditions, experimental results should meet three criteria: (1) the data must be experimentally valid, in that they were acquired under conditions that meet all the requirements of the experimental method, (2) the Hg:DOM ratio should be determined and it should fall within levels that are consistent with environmental conditions, and (3) the stability constants must fall within the detection window of the method. The ion exchange method was found to be limited by its detection window, which constrains the method to stability constants with log K values less than about 14. The liquid-liquid extraction method was found to be complicated by the ability of Hg-DOM complexes to partition into the organic phase. The CLE-SPE method was found to be the most suitable of these methods for the measurement of Hg-DOM stability constants. Stability constants for DOM isolates measured using the CLE-SPE method at environmentally relevant Hg:DOM ratios were log K = 25-30 (M-1). These values are consistent with the strong Hg2+ binding expected for reduced S-containing binding sites.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Geochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.apgeochem.2007.03.018","issn":"08832927","usgsCitation":"Gasper, J.D., Aiken, G.R., and Ryan, J.N., 2007, A critical review of three methods used for the measurement of mercury (Hg2+)-dissolved organic matter stability constants: Applied Geochemistry, v. 22, no. 8 SPEC. ISS., p. 1583-1597, https://doi.org/10.1016/j.apgeochem.2007.03.018.","productDescription":"15 p.","startPage":"1583","endPage":"1597","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":238547,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211282,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apgeochem.2007.03.018"}],"volume":"22","issue":"8 SPEC. ISS.","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e3a0e4b0c8380cd4613c","contributors":{"authors":[{"text":"Gasper, J. D.","contributorId":58837,"corporation":false,"usgs":true,"family":"Gasper","given":"J.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":430298,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Aiken, George R. 0000-0001-8454-0984 graiken@usgs.gov","orcid":"https://orcid.org/0000-0001-8454-0984","contributorId":1322,"corporation":false,"usgs":true,"family":"Aiken","given":"George","email":"graiken@usgs.gov","middleInitial":"R.","affiliations":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":430297,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ryan, Joseph N.","contributorId":54290,"corporation":false,"usgs":false,"family":"Ryan","given":"Joseph","email":"","middleInitial":"N.","affiliations":[{"id":604,"text":"University of Colorado- Boulder","active":false,"usgs":true}],"preferred":false,"id":430299,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031160,"text":"70031160 - 2007 - Estimated variability of National Atmospheric Deposition Program/Mercury Deposition Network measurements using collocated samplers","interactions":[],"lastModifiedDate":"2012-03-12T17:21:19","indexId":"70031160","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1552,"text":"Environmental Monitoring and Assessment","onlineIssn":"1573-2959","printIssn":"0167-6369","active":true,"publicationSubtype":{"id":10}},"title":"Estimated variability of National Atmospheric Deposition Program/Mercury Deposition Network measurements using collocated samplers","docAbstract":"The National Atmospheric Deposition Program/Mercury Deposition Network (MDN) provides long-term, quality-assured records of mercury in wet deposition in the USA and Canada. Interpretation of spatial and temporal trends in the MDN data requires quantification of the variability of the MDN measurements. Variability is quantified for MDN data from collocated samplers at MDN sites in two states, one in Illinois and one in Washington. Median absolute differences in the collocated sampler data for total mercury concentration are approximately 11% of the median mercury concentration for all valid 1999-2004 MDN data. Median absolute differences are between 3.0% and 14% of the median MDN value for collector catch (sample volume) and between 6.0% and 15% of the median MDN value for mercury wet deposition. The overall measurement errors are sufficiently low to resolve between NADP/MDN measurements by ??2 ng??l-1 and ??2 ????m-2?? year-1, which are the contour intervals used to display the data on NADP isopleths maps for concentration and deposition, respectively. ?? Springer Science+Business Media B.V. 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Monitoring and Assessment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10661-006-9456-6","issn":"01676369","usgsCitation":"Wetherbee, G., Gay, D., Brunette, R., and Sweet, C., 2007, Estimated variability of National Atmospheric Deposition Program/Mercury Deposition Network measurements using collocated samplers: Environmental Monitoring and Assessment, v. 131, no. 1-3, p. 49-69, https://doi.org/10.1007/s10661-006-9456-6.","startPage":"49","endPage":"69","numberOfPages":"21","costCenters":[],"links":[{"id":211379,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10661-006-9456-6"},{"id":238659,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"131","issue":"1-3","noUsgsAuthors":false,"publicationDate":"2007-01-23","publicationStatus":"PW","scienceBaseUri":"505a0ab0e4b0c8380cd52429","contributors":{"authors":[{"text":"Wetherbee, G.A.","contributorId":46136,"corporation":false,"usgs":true,"family":"Wetherbee","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":430311,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gay, D.A.","contributorId":54018,"corporation":false,"usgs":true,"family":"Gay","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":430313,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brunette, R.C.","contributorId":47160,"corporation":false,"usgs":true,"family":"Brunette","given":"R.C.","affiliations":[],"preferred":false,"id":430312,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sweet, C.W.","contributorId":8286,"corporation":false,"usgs":true,"family":"Sweet","given":"C.W.","email":"","affiliations":[],"preferred":false,"id":430310,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031163,"text":"70031163 - 2007 - Modeling grain size variations of aeolian gypsum deposits at White Sands, New Mexico, using AVIRIS imagery","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031163","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1801,"text":"Geomorphology","active":true,"publicationSubtype":{"id":10}},"title":"Modeling grain size variations of aeolian gypsum deposits at White Sands, New Mexico, using AVIRIS imagery","docAbstract":"Visible and Near-Infrared (VNIR) through Short Wavelength Infrared (SWIR) (0.4-2.5????m) AVIRIS data, along with laboratory spectral measurements and analyses of field samples, were used to characterize grain size variations in aeolian gypsum deposits across barchan-transverse, parabolic, and barchan dunes at White Sands, New Mexico, USA. All field samples contained a mineralogy of ?????100% gypsum. In order to document grain size variations at White Sands, surficial gypsum samples were collected along three Transects parallel to the prevailing downwind direction. Grain size analyses were carried out on the samples by sieving them into seven size fractions ranging from 45 to 621????m, which were subjected to spectral measurements. Absorption band depths of the size fractions were determined after applying an automated continuum-removal procedure to each spectrum. Then, the relationship between absorption band depth and gypsum size fraction was established using a linear regression. Three software processing steps were carried out to measure the grain size variations of gypsum in the Dune Area using AVIRIS data. AVIRIS mapping results, field work and laboratory analysis all show that the interdune areas have lower absorption band depth values and consist of finer grained gypsum deposits. In contrast, the dune crest areas have higher absorption band depth values and consist of coarser grained gypsum deposits. Based on laboratory estimates, a representative barchan-transverse dune (Transect 1) has a mean grain size of 1.16 ??{symbol} (449????m). The error bar results show that the error ranges from - 50 to + 50????m. Mean grain size for a representative parabolic dune (Transect 2) is 1.51 ??{symbol} (352????m), and 1.52 ??{symbol} (347????m) for a representative barchan dune (Transect 3). T-test results confirm that there are differences in the grain size distributions between barchan and parabolic dunes and between interdune and dune crest areas. The t-test results also show that there are no significant differences between modeled and laboratory-measured grain size values. Hyperspectral grain size modeling can help to determine dynamic processes shaping the formation of the dunes such as wind directions, and the relative strengths of winds through time. This has implications for studying such processes on other planetary landforms that have mineralogy with unique absorption bands in VNIR-SWIR hyperspectral data. ?? 2006 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geomorphology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.geomorph.2006.10.013","issn":"0169555X","usgsCitation":"Ghrefat, H., Goodell, P., Hubbard, B., Langford, R., and Aldouri, R., 2007, Modeling grain size variations of aeolian gypsum deposits at White Sands, New Mexico, using AVIRIS imagery: Geomorphology, v. 88, no. 1-2, p. 57-68, https://doi.org/10.1016/j.geomorph.2006.10.013.","startPage":"57","endPage":"68","numberOfPages":"12","costCenters":[],"links":[{"id":211433,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.geomorph.2006.10.013"},{"id":238719,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5bfce4b0c8380cd6f955","contributors":{"authors":[{"text":"Ghrefat, H.A.","contributorId":107492,"corporation":false,"usgs":true,"family":"Ghrefat","given":"H.A.","email":"","affiliations":[],"preferred":false,"id":430323,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Goodell, P.C.","contributorId":42028,"corporation":false,"usgs":true,"family":"Goodell","given":"P.C.","email":"","affiliations":[],"preferred":false,"id":430320,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hubbard, B.E.","contributorId":53576,"corporation":false,"usgs":true,"family":"Hubbard","given":"B.E.","email":"","affiliations":[],"preferred":false,"id":430321,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Langford, R.P.","contributorId":70589,"corporation":false,"usgs":true,"family":"Langford","given":"R.P.","email":"","affiliations":[],"preferred":false,"id":430322,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Aldouri, R.E.","contributorId":14190,"corporation":false,"usgs":true,"family":"Aldouri","given":"R.E.","email":"","affiliations":[],"preferred":false,"id":430319,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031172,"text":"70031172 - 2007 - Estimating fishing mortality, natural mortality, and selectivity using recoveries from tagging young fish","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031172","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Estimating fishing mortality, natural mortality, and selectivity using recoveries from tagging young fish","docAbstract":"Current methods for estimation of age- and year-specific instantaneous mortality rates based on multiyear, multiple-age tagging studies assume that it is feasible to tag fish in a wide range of ages. For some species, however, only the youngest one or two age-classes are readily available for tagging. Given the practical advantages of tagging young fish only, an important question is whether such studies would provide the information needed for estimation of age-dependent mortality rates. We investigated three designs: tagging only the youngest available age-class, tagging the two youngest age-classes, and tagging the first five age-classes. We carried out simulation studies to assess estimator performance under these three designs, in each case assuming the same total number of tagged fish. Data were generated assuming fishing mortality rates to be age and year dependent and natural mortality rates to be constant or with limited age dependence. Estimator performance is best when fish are tagged in five age-classes, and tagging fish in the two youngest age-classes shows substantial improvement compared with tagging one age-class only. External information about the tag-reporting rate is necessary to obtain estimators with reasonable properties, especially in the case of models with age-dependent natural mortality. Such information can be obtained from auxiliary studies by means of high-reward tags or planted tags. Collecting recovery information for several additional years after the last release produces small improvements in precision and bias. If tagging fish in multiple age-classes is impractical, reasonable precision can be obtained by tagging one or preferably two age-classes and obtaining supplemental information on the reporting rate. For illustration, estimates of age-dependent fishing and natural mortality rates were obtained from tag returns on Chesapeake Bay striped bass Morone saxatilis tagged at ages 3 and 4 years. ?? Copyright by the American Fisheries Society 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"North American Journal of Fisheries Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/M06-127.1","issn":"02755947","usgsCitation":"Jiang, H., Brownie, C., Hightower, J., and Pollock, K.H., 2007, Estimating fishing mortality, natural mortality, and selectivity using recoveries from tagging young fish: North American Journal of Fisheries Management, v. 27, no. 3, p. 773-781, https://doi.org/10.1577/M06-127.1.","startPage":"773","endPage":"781","numberOfPages":"9","costCenters":[],"links":[{"id":238752,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211460,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/M06-127.1"}],"volume":"27","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-08-01","publicationStatus":"PW","scienceBaseUri":"505a0b1be4b0c8380cd5258e","contributors":{"authors":[{"text":"Jiang, H.","contributorId":83731,"corporation":false,"usgs":true,"family":"Jiang","given":"H.","affiliations":[],"preferred":false,"id":430357,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brownie, C.","contributorId":43463,"corporation":false,"usgs":true,"family":"Brownie","given":"C.","affiliations":[],"preferred":false,"id":430355,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hightower, J.E.","contributorId":16605,"corporation":false,"usgs":true,"family":"Hightower","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":430354,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Pollock, K. H.","contributorId":65184,"corporation":false,"usgs":false,"family":"Pollock","given":"K.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":430356,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031201,"text":"70031201 - 2007 - Three-dimensional P wave velocity model for the San Francisco Bay region, California","interactions":[],"lastModifiedDate":"2023-08-01T11:41:35.989038","indexId":"70031201","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Three-dimensional P wave velocity model for the San Francisco Bay region, California","docAbstract":"<div class=\"\"><div class=\"article-section__content en main\"><p><span class=\"paraNumber\">[1]<span>&nbsp;</span></span>A new three-dimensional<span>&nbsp;</span><i>P</i><span>&nbsp;</span>wave velocity model for the greater San Francisco Bay region has been derived using the double-difference seismic tomography method, using data from about 5,500 chemical explosions or air gun blasts and approximately 6,000 earthquakes. The model region covers 140 km NE-SW by 240 km NW-SE, extending from 20 km south of Monterey to Santa Rosa and reaching from the Pacific coast to the edge of the Great Valley. Our model provides the first regional view of a number of basement highs that are imaged in the uppermost few kilometers of the model, and images a number of velocity anomaly lows associated with known Mesozoic and Cenozoic basins in the study area. High velocity (<i>V</i><sub>p</sub><span>&nbsp;</span>&gt; 6.5 km/s) features at ∼15-km depth beneath part of the edge of the Great Valley and along the San Francisco peninsula are interpreted as ophiolite bodies. The relocated earthquakes provide a clear picture of the geometry of the major faults in the region, illuminating fault dips that are generally consistent with previous studies. Ninety-five percent of the earthquakes have depths between 2.3 and 15.2 km, and the corresponding seismic velocities at the hypocenters range from 4.8 km/s (presumably corresponding to Franciscan basement or Mesozoic sedimentary rocks of the Great Valley Sequence) to 6.8 km/s. The top of the seismogenic zone is thus largely controlled by basement depth, but the base of the seismogenic zone is not restricted to seismic velocities of ≤6.3 km/s in this region, as had been previously proposed.</p></div></div>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006JB004682","issn":"01480227","usgsCitation":"Thurber, C., Brocher, T., Zhang, H., and Langenheim, V., 2007, Three-dimensional P wave velocity model for the San Francisco Bay region, California: Journal of Geophysical Research B: Solid Earth, v. 112, no. 7, 19 p., https://doi.org/10.1029/2006JB004682.","productDescription":"19 p.","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":477063,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006jb004682","text":"Publisher Index Page"},{"id":238917,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Bay region","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -123.55068353717401,\n              38.79862353087219\n            ],\n            [\n              -123.55068353717401,\n              36.67991766947995\n            ],\n            [\n              -120.56368386773738,\n              36.67991766947995\n            ],\n            [\n              -120.56368386773738,\n              38.79862353087219\n            ],\n            [\n              -123.55068353717401,\n              38.79862353087219\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"112","issue":"7","noUsgsAuthors":false,"publicationDate":"2007-07-17","publicationStatus":"PW","scienceBaseUri":"505bb31ee4b08c986b325bba","contributors":{"authors":[{"text":"Thurber, C.H.","contributorId":28617,"corporation":false,"usgs":true,"family":"Thurber","given":"C.H.","email":"","affiliations":[],"preferred":false,"id":430484,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brocher, T.M. 0000-0002-9740-839X","orcid":"https://orcid.org/0000-0002-9740-839X","contributorId":69994,"corporation":false,"usgs":true,"family":"Brocher","given":"T.M.","affiliations":[],"preferred":false,"id":430487,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zhang, H.","contributorId":50311,"corporation":false,"usgs":true,"family":"Zhang","given":"H.","affiliations":[],"preferred":false,"id":430485,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Langenheim, V.E. 0000-0003-2170-5213","orcid":"https://orcid.org/0000-0003-2170-5213","contributorId":54956,"corporation":false,"usgs":true,"family":"Langenheim","given":"V.E.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":false,"id":430486,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031209,"text":"70031209 - 2007 - Global rates of habitat loss and implications for amphibian conservation","interactions":[],"lastModifiedDate":"2017-04-12T16:14:10","indexId":"70031209","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":"Global rates of habitat loss and implications for amphibian conservation","docAbstract":"<p><span>A large number of factors are known to affect amphibian population viability, but most authors agree that the principal causes of amphibian declines are habitat loss, alteration, and fragmentation. We provide a global assessment of land use dynamics in the context of amphibian distributions. We accomplished this by compiling global maps of amphibian species richness and recent rates of change in land cover, land use, and human population growth. The amphibian map was developed using a combination of published literature and digital databases. We used an ecoregion framework to help interpret species distributions across environmental, rather than political, boundaries. We mapped rates of land cover and use change with statistics from the World Resources Institute, refined with a global digital dataset on land cover derived from satellite data. Temporal maps of human population were developed from the World Resources Institute database and other published sources. Our resultant map of amphibian species richness illustrates that amphibians are distributed in an uneven pattern around the globe, preferring terrestrial and freshwater habitats in ecoregions that are warm and moist. Spatiotemporal patterns of human population show that, prior to the 20</span><sup>th</sup><span> century, population growth and spread was slower, most extensive in the temperate ecoregions, and largely exclusive of major regions of high amphibian richness. Since the beginning of the 20</span><sup>th</sup><span> century, human population growth has been exponential and has occurred largely in the subtropical and tropical ecoregions favored by amphibians. Population growth has been accompanied by broad-scale changes in land cover and land use, typically in support of agriculture. We merged information on land cover, land use, and human population growth to generate a composite map showing the rates at which humans have been changing the world. When compared with the map of amphibian species richness, we found that many of the regions of the earth supporting the richest assemblages of amphibians are currently undergoing the highest rates of landscape modification.</span></p>","language":"English","publisher":"The American Society of Ichthyologists and Herpetologists","doi":"10.1643/0045-8511(2007)7[967:GROHLA]2.0.CO;2","issn":"00458511","usgsCitation":"Gallant, A.L., Klaver, R., Casper, G., and Lannoo, M., 2007, Global rates of habitat loss and implications for amphibian conservation: Copeia, v. 2007, no. 4, p. 967-979, https://doi.org/10.1643/0045-8511(2007)7[967:GROHLA]2.0.CO;2.","productDescription":"13 p.","startPage":"967","endPage":"979","numberOfPages":"13","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":238951,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2007","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a295be4b0c8380cd5a8bc","contributors":{"authors":[{"text":"Gallant, Alisa L. 0000-0002-3029-6637","orcid":"https://orcid.org/0000-0002-3029-6637","contributorId":23508,"corporation":false,"usgs":true,"family":"Gallant","given":"Alisa","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":430538,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Klaver, R. W. 0000-0002-3263-9701","orcid":"https://orcid.org/0000-0002-3263-9701","contributorId":50267,"corporation":false,"usgs":true,"family":"Klaver","given":"R. W.","affiliations":[],"preferred":false,"id":430539,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Casper, G.S.","contributorId":73407,"corporation":false,"usgs":true,"family":"Casper","given":"G.S.","email":"","affiliations":[],"preferred":false,"id":430540,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lannoo, M.J.","contributorId":17937,"corporation":false,"usgs":true,"family":"Lannoo","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":430537,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031210,"text":"70031210 - 2007 - Competitive release and facilitation of drug-resistant parasites after therapeutic chemotherapy in a rodent malaria model","interactions":[],"lastModifiedDate":"2012-03-12T17:21:02","indexId":"70031210","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3165,"text":"Proceedings of the National Academy of Sciences of the United States of America","active":true,"publicationSubtype":{"id":10}},"title":"Competitive release and facilitation of drug-resistant parasites after therapeutic chemotherapy in a rodent malaria model","docAbstract":"Malaria infections frequently consist of mixtures of drug-resistant and drug-sensitive parasites. If crowding occurs, where clonal population densities are suppressed by the presence of coinfecting clones, removal of susceptible clones by drug treatment could allow resistant clones to expand into the newly vacated niche space within a host. Theoretical models show that, if such competitive release occurs, it can be a potent contributor to the strength of selection, greatly accelerating the rate at which resistance spreads in a population. A variety of correlational field data suggest that competitive release could occur in human malaria populations, but direct evidence cannot be ethically obtained from human infections. Here we show competitive release after pyrimethamine curative chemotherapy of acute infections of the rodent malaria Plasmodium chabaudi in laboratory mice. The expansion of resistant parasite numbers after treatment resulted in enhanced transmission-stage densities. After the elimination or near-elimination of sensitive parasites, the number of resistant parasites increased beyond that achieved when a competitor had never been present. Thus, a substantial competitive release occurred, markedly elevating the fitness advantages of drug resistance above those arising from survival alone. This finding may explain the rapid spread of drug resistance and the subsequently brief useful lifespans of some antimalarial drugs. In a second experiment, where subcurative chemotherapy was administered, the resistant clone was only partly released from competitive suppression and experienced a restriction in the size of its expansion after treatment. This finding raises the prospect of harnessing in-host ecology to slow the spread of drug resistance. ?? 2007 by The National Academy of Sciences of the USA.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Proceedings of the National Academy of Sciences of the United States of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1073/pnas.0707766104","issn":"00278424","usgsCitation":"Wargo, A.R., Huijben, S., De Roode, J.C., Shepherd, J., and Read, A., 2007, Competitive release and facilitation of drug-resistant parasites after therapeutic chemotherapy in a rodent malaria model: Proceedings of the National Academy of Sciences of the United States of America, v. 104, no. 50, p. 19914-19919, https://doi.org/10.1073/pnas.0707766104.","startPage":"19914","endPage":"19919","numberOfPages":"6","costCenters":[],"links":[{"id":477252,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://www.ncbi.nlm.nih.gov/pmc/articles/2148397","text":"External Repository"},{"id":211629,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1073/pnas.0707766104"},{"id":238952,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"104","issue":"50","noUsgsAuthors":false,"publicationDate":"2007-12-11","publicationStatus":"PW","scienceBaseUri":"5059f8cee4b0c8380cd4d2e6","contributors":{"authors":[{"text":"Wargo, A. R.","contributorId":28734,"corporation":false,"usgs":true,"family":"Wargo","given":"A.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":430542,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Huijben, S.","contributorId":107925,"corporation":false,"usgs":true,"family":"Huijben","given":"S.","email":"","affiliations":[],"preferred":false,"id":430545,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"De Roode, J. C.","contributorId":84561,"corporation":false,"usgs":true,"family":"De Roode","given":"J.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":430544,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shepherd, J.","contributorId":26134,"corporation":false,"usgs":true,"family":"Shepherd","given":"J.","email":"","affiliations":[],"preferred":false,"id":430541,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Read, A.F.","contributorId":69780,"corporation":false,"usgs":true,"family":"Read","given":"A.F.","email":"","affiliations":[],"preferred":false,"id":430543,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031219,"text":"70031219 - 2007 - Measuring bed load discharge in rivers: Bedload-surrogate monitoring workshop Minneapolis, Minnesota, 11-14 April 2007","interactions":[],"lastModifiedDate":"2021-03-31T15:27:17.483622","indexId":"70031219","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"Measuring bed load discharge in rivers: Bedload-surrogate monitoring workshop Minneapolis, Minnesota, 11-14 April 2007","docAbstract":"The International Bedload-Surrogate Monitoring Workshop (http://www.nced.umn.edu/BRIC_2007.html), organized by the Bedload Research International Cooperative (BRIC; www.bedloadresearch.org), was held to assess and abet progress in continuous, semiautomated, or fully automated (surrogate) technologies for monitoring bed load discharge in gravel-, sand-, and mixed gravel-sand-bedded rivers. Direct bed load measurements, particularly at medium and high flows, during which most bed load occurs, tend to be time-consuming, expensive, and potentially hazardous. Surrogate technologies developed largely over the past decade and used at a number of research sites around the world show considerable promise toward providing relatively dense, robust, and quantifiably reliable bed load data sets. However, information on the efficacy of selected technologies for use in monitoring programs is needed, as is identification of the ways and means for bringing the most promising and practical of the technologies to fruition.","language":"English","publisher":"Wiley","doi":"10.1029/2007EO450008","usgsCitation":"Gray, J.R., Laronne, J.B., and Marr, J.D., 2007, Measuring bed load discharge in rivers: Bedload-surrogate monitoring workshop Minneapolis, Minnesota, 11-14 April 2007: Eos, Transactions, American Geophysical Union, v. 88, no. 45, https://doi.org/10.1029/2007EO450008.","productDescription":"1 p.","startPage":"471","costCenters":[{"id":502,"text":"Office of Surface Water","active":true,"usgs":true}],"links":[{"id":238988,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"45","noUsgsAuthors":false,"publicationDate":"2007-12-03","publicationStatus":"PW","scienceBaseUri":"505a5344e4b0c8380cd6c971","contributors":{"authors":[{"text":"Gray, John R. 0000-0002-8817-3701 jrgray@usgs.gov","orcid":"https://orcid.org/0000-0002-8817-3701","contributorId":1158,"corporation":false,"usgs":true,"family":"Gray","given":"John","email":"jrgray@usgs.gov","middleInitial":"R.","affiliations":[{"id":5058,"text":"Office of the Chief Scientist for Water","active":true,"usgs":true}],"preferred":true,"id":430575,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Laronne, Jonathan B.","contributorId":91207,"corporation":false,"usgs":false,"family":"Laronne","given":"Jonathan","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":430577,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Marr, Jeffrey D. G.","contributorId":80791,"corporation":false,"usgs":false,"family":"Marr","given":"Jeffrey","email":"","middleInitial":"D. G.","affiliations":[{"id":47665,"text":"St. Anthony Falls Laboratory, University of Minnesota, Minneapolis, MN, USA","active":true,"usgs":false}],"preferred":false,"id":430576,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031220,"text":"70031220 - 2007 - Dynamics of cover, UV-protective pigments, and quantum yield in biological soil crust communities of an undisturbed Mojave Desert shrubland","interactions":[],"lastModifiedDate":"2018-03-01T10:00:56","indexId":"70031220","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1665,"text":"Flora","onlineIssn":"1618-0585","printIssn":"0367-2530","active":true,"publicationSubtype":{"id":10}},"title":"Dynamics of cover, UV-protective pigments, and quantum yield in biological soil crust communities of an undisturbed Mojave Desert shrubland","docAbstract":"<p>Biological soil crusts are an integral part of dryland ecosystems. We monitored the cover of lichens and mosses, cyanobacterial biomass, concentrations of UV-protective pigments in both free-living and lichenized cyanobacteria, and quantum yield in the soil lichen species <i>Collema</i> in an undisturbed Mojave Desert shrubland. During our sampling time, the site received historically high and low levels of precipitation, whereas temperatures were close to normal. Lichen cover, dominated by <i>Collema tenax</i> and <i>C. coccophorum</i>, and moss cover, dominated by <i>Syntrichia caninervis</i>, responded to both increases and decreases in precipitation. This finding for <i>Collema</i> spp. at a hot Mojave Desert site is in contrast to a similar study conducted at a cool desert site on the Colorado Plateau in SE Utah, USA, where <i>Collema</i> spp. cover dropped in response to elevated temperatures, but did not respond to changes in rainfall. The concentrations of UV-protective pigments in free-living cyanobacteria at the Mojave Desert site were also strongly and positively related to rainfall received between sampling times (<i>R</i><sup>2</sup> values ranged from 0.78 to 0.99). However, pigment levels in the lichenized cyanobacteria showed little correlation with rainfall. Quantum yield in <i>Collema</i> spp. was closely correlated with rainfall. Climate models in this region predict a 3.5–4.0&nbsp;°C rise in temperature and a 15–20% decline in winter precipitation by 2099. Based on our data, this rise in temperature is unlikely to have a strong effect on the dominant species of the soil crusts. However, the predicted drop in precipitation will likely lead to a decrease in soil lichen and moss cover, and high stress or mortality in soil cyanobacteria as levels of UV-protective pigments decline. In addition, surface-disturbing activities (e.g., recreation, military activities, fire) are rapidly increasing in the Mojave Desert, and these disturbances quickly remove soil lichens and mosses. These stresses combined are likely to lead to shifts in species composition and the local extirpation of some lichen or moss species. As these organisms are critical components of nutrient cycling, soil fertility, and soil stability, such changes are likely to reverberate throughout these ecosystems.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.flora.2007.05.007","usgsCitation":"Belnap, J., Phillips, S.L., and Smith, S., 2007, Dynamics of cover, UV-protective pigments, and quantum yield in biological soil crust communities of an undisturbed Mojave Desert shrubland: Flora, v. 202, no. 8, p. 674-686, https://doi.org/10.1016/j.flora.2007.05.007.","productDescription":"13 p.","startPage":"674","endPage":"686","costCenters":[],"links":[{"id":239019,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Mojave Desert","volume":"202","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0432e4b0c8380cd50845","contributors":{"authors":[{"text":"Belnap, Jayne 0000-0001-7471-2279 jayne_belnap@usgs.gov","orcid":"https://orcid.org/0000-0001-7471-2279","contributorId":1332,"corporation":false,"usgs":true,"family":"Belnap","given":"Jayne","email":"jayne_belnap@usgs.gov","affiliations":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"preferred":true,"id":430578,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Phillips, Susan L. 0000-0002-5891-8485 sue_phillips@usgs.gov","orcid":"https://orcid.org/0000-0002-5891-8485","contributorId":717,"corporation":false,"usgs":true,"family":"Phillips","given":"Susan","email":"sue_phillips@usgs.gov","middleInitial":"L.","affiliations":[{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true}],"preferred":false,"id":430580,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, Stanley D.","contributorId":83417,"corporation":false,"usgs":true,"family":"Smith","given":"Stanley D.","affiliations":[],"preferred":false,"id":430579,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031241,"text":"70031241 - 2007 - Killer whales and marine mammal trends in the North Pacific - A re-examination of evidence for sequential megafauna collapse and the prey-switching hypothesis","interactions":[],"lastModifiedDate":"2012-03-12T17:21:19","indexId":"70031241","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2671,"text":"Marine Mammal Science","active":true,"publicationSubtype":{"id":10}},"title":"Killer whales and marine mammal trends in the North Pacific - A re-examination of evidence for sequential megafauna collapse and the prey-switching hypothesis","docAbstract":"Springer et al. (2003) contend that sequential declines occurred in North Pacific populations of harbor and fur seals, Steller sea lions, and sea otters. They hypothesize that these were due to increased predation by killer whales, when industrial whaling's removal of large whales as a supposed primary food source precipitated a prey switch. Using a regional approach, we reexamined whale catch data, killer whale predation observations, and the current biomass and trends of potential prey, and found little support for the prey-switching hypothesis. Large whale biomass in the Bering Sea did not decline as much as suggested by Springer et al., and much of the reduction occurred 50-100 yr ago, well before the declines of pinnipeds and sea otters began; thus, the need to switch prey starting in the 1970s is doubtful. With the sole exception that the sea otter decline followed the decline of pinnipeds, the reported declines were not in fact sequential. Given this, it is unlikely that a sequential megafaunal collapse from whales to sea otters occurred. The spatial and temporal patterns of pinniped and sea otter population trends are more complex than Springer et al. suggest, and are often inconsistent with their hypothesis. Populations remained stable or increased in many areas, despite extensive historical whaling and high killer whale abundance. Furthermore, observed killer whale predation has largely involved pinnipeds and small cetaceans; there is little evidence that large whales were ever a major prey item in high latitudes. Small cetaceans (ignored by Springer et al.) were likely abundant throughout the period. Overall, we suggest that the Springer et al. hypothesis represents a misleading and simplistic view of events and trophic relationships within this complex marine ecosystem. ?? 2007 by the Society for Marine Mammalogy.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine Mammal Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1748-7692.2006.00093.x","issn":"08240469","usgsCitation":"Wade, P., Burkanov, V., Dahlheim, M., Friday, N., Fritz, L., Loughlin, T.R., Mizroch, S., Muto, M., Rice, D., Barrett-Lennard, L.G., Black, N., Burdin, A., Calambokidis, J., Cerchio, S., Ford, J., Jacobsen, J., Matkin, C., Matkin, D., Mehta, A., Small, R., Straley, J., McCluskey, S., VanBlaricom, G., and Clapham, P., 2007, Killer whales and marine mammal trends in the North Pacific - A re-examination of evidence for sequential megafauna collapse and the prey-switching hypothesis: Marine Mammal Science, v. 23, no. 4, p. 766-802, https://doi.org/10.1111/j.1748-7692.2006.00093.x.","startPage":"766","endPage":"802","numberOfPages":"37","costCenters":[],"links":[{"id":477138,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hdl.handle.net/1912/1936","text":"External Repository"},{"id":211316,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1748-7692.2006.00093.x"},{"id":238585,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-06-26","publicationStatus":"PW","scienceBaseUri":"505a4095e4b0c8380cd64e8e","contributors":{"authors":[{"text":"Wade, P.R.","contributorId":71761,"corporation":false,"usgs":true,"family":"Wade","given":"P.R.","email":"","affiliations":[],"preferred":false,"id":430676,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Burkanov, V.N.","contributorId":56026,"corporation":false,"usgs":true,"family":"Burkanov","given":"V.N.","email":"","affiliations":[],"preferred":false,"id":430673,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dahlheim, M.E.","contributorId":106307,"corporation":false,"usgs":true,"family":"Dahlheim","given":"M.E.","email":"","affiliations":[],"preferred":false,"id":430686,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Friday, N.A.","contributorId":45508,"corporation":false,"usgs":true,"family":"Friday","given":"N.A.","email":"","affiliations":[],"preferred":false,"id":430670,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Fritz, L.W.","contributorId":107922,"corporation":false,"usgs":true,"family":"Fritz","given":"L.W.","email":"","affiliations":[],"preferred":false,"id":430687,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Loughlin, Thomas R.","contributorId":18885,"corporation":false,"usgs":false,"family":"Loughlin","given":"Thomas","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":430667,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Mizroch, S.A.","contributorId":86965,"corporation":false,"usgs":true,"family":"Mizroch","given":"S.A.","email":"","affiliations":[],"preferred":false,"id":430681,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Muto, M.M.","contributorId":72197,"corporation":false,"usgs":true,"family":"Muto","given":"M.M.","email":"","affiliations":[],"preferred":false,"id":430677,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Rice, D.W.","contributorId":37012,"corporation":false,"usgs":true,"family":"Rice","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":430669,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Barrett-Lennard, L. 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,{"id":70031245,"text":"70031245 - 2007 - A multi-scale segmentation approach to filling gaps in Landsat ETM+ SLC-off images","interactions":[],"lastModifiedDate":"2018-02-21T15:48:00","indexId":"70031245","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2068,"text":"International Journal of Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"A multi-scale segmentation approach to filling gaps in Landsat ETM+ SLC-off images","docAbstract":"On 31 May 2003, the Landsat Enhanced Thematic Plus (ETM+) Scan Line Corrector (SLC) failed, causing the scanning pattern to exhibit wedge-shaped scan-to-scan gaps. We developed a method that uses coincident spectral data to fill the image gaps. This method uses a multi-scale segment model, derived from a previous Landsat SLC-on image (image acquired prior to the SLC failure), to guide the spectral interpolation across the gaps in SLC-off images (images acquired after the SLC failure). This paper describes the process used to generate the segment model, provides details of the gap-fill algorithm used in deriving the segment-based gap-fill product, and presents the results of the gap-fill process applied to grassland, cropland, and forest landscapes. Our results indicate this product will be useful for a wide variety of applications, including regional-scale studies, general land cover mapping (e.g. forest, urban, and grass), crop-specific mapping and monitoring, and visual assessments. Applications that need to be cautious when using pixels in the gap areas include any applications that require per-pixel accuracy, such as urban characterization or impervious surface mapping, applications that use texture to characterize landscape features, and applications that require accurate measurements of small or narrow landscape features such as roads, farmsteads, and riparian areas.","language":"English","publisher":"Taylor & Francis","doi":"10.1080/01431160601034902","issn":"01431161","usgsCitation":"Maxwell, S., Schmidt, G.L., and Storey, J.C., 2007, A multi-scale segmentation approach to filling gaps in Landsat ETM+ SLC-off images: International Journal of Remote Sensing, v. 28, no. 23, p. 5339-5356, https://doi.org/10.1080/01431160601034902.","productDescription":"18 p.","startPage":"5339","endPage":"5356","numberOfPages":"18","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":238656,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211376,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/01431160601034902"}],"volume":"28","issue":"23","noUsgsAuthors":false,"publicationDate":"2007-11-20","publicationStatus":"PW","scienceBaseUri":"5059e48be4b0c8380cd466eb","contributors":{"authors":[{"text":"Maxwell, S.K.","contributorId":36665,"corporation":false,"usgs":true,"family":"Maxwell","given":"S.K.","email":"","affiliations":[],"preferred":false,"id":430704,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schmidt, Gail L. 0000-0002-9684-8158 gschmidt@usgs.gov","orcid":"https://orcid.org/0000-0002-9684-8158","contributorId":3475,"corporation":false,"usgs":true,"family":"Schmidt","given":"Gail","email":"gschmidt@usgs.gov","middleInitial":"L.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":430705,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Storey, James C. 0000-0002-6664-7232","orcid":"https://orcid.org/0000-0002-6664-7232","contributorId":35505,"corporation":false,"usgs":true,"family":"Storey","given":"James","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":430703,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031248,"text":"70031248 - 2007 - Evaluation of abutment scour prediction equations with field data","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031248","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3647,"text":"Transportation Research Record","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation of abutment scour prediction equations with field data","docAbstract":"The U.S. Geological Survey, in cooperation with FHWA, compared predicted abutment scour depths, computed with selected predictive equations, with field observations collected at 144 bridges in South Carolina and at eight bridges from the National Bridge Scour Database. Predictive equations published in the 4th edition of Evaluating Scour at Bridges (Hydraulic Engineering Circular 18) were used in this comparison, including the original Froehlich, the modified Froehlich, the Sturm, the Maryland, and the HIRE equations. The comparisons showed that most equations tended to provide conservative estimates of scour that at times were excessive (as large as 158 ft). Equations also produced underpredictions of scour, but with less frequency. Although the equations provide an important resource for evaluating abutment scour at bridges, the results of this investigation show the importance of using engineering judgment in conjunction with these equations.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Transportation Research Record","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.3141/2025-12","issn":"03611981","isbn":"9780309104524","usgsCitation":"Benedict, S., Deshpande, N., and Aziz, N., 2007, Evaluation of abutment scour prediction equations with field data: Transportation Research Record, no. 2025, p. 118-126, https://doi.org/10.3141/2025-12.","startPage":"118","endPage":"126","numberOfPages":"9","costCenters":[],"links":[{"id":211402,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3141/2025-12"},{"id":238685,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"2025","noUsgsAuthors":false,"publicationDate":"2007-01-01","publicationStatus":"PW","scienceBaseUri":"505a0c3ae4b0c8380cd52ab0","contributors":{"authors":[{"text":"Benedict, S.T.","contributorId":97155,"corporation":false,"usgs":true,"family":"Benedict","given":"S.T.","email":"","affiliations":[],"preferred":false,"id":430720,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Deshpande, N.","contributorId":60012,"corporation":false,"usgs":true,"family":"Deshpande","given":"N.","email":"","affiliations":[],"preferred":false,"id":430718,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Aziz, N.M.","contributorId":77731,"corporation":false,"usgs":true,"family":"Aziz","given":"N.M.","email":"","affiliations":[],"preferred":false,"id":430719,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031249,"text":"70031249 - 2007 - An analysis of urban development and its environmental impact on the Tampa Bay watershed","interactions":[],"lastModifiedDate":"2017-04-12T15:59:17","indexId":"70031249","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2258,"text":"Journal of Environmental Management","active":true,"publicationSubtype":{"id":10}},"title":"An analysis of urban development and its environmental impact on the Tampa Bay watershed","docAbstract":"<p><span>Urbanization has transformed natural landscapes into anthropogenic impervious surfaces. Urban land use has become a major driving force for land cover and land use change in the Tampa Bay watershed of west-central Florida. This study investigates urban land use change and its impact on the watershed. The spatial and temporal changes, as well as the development density of urban land use are determined by analyzing the impervious surface distribution using Landsat satellite imagery. Population distribution and density are extracted from the 2000 census data. Non-point source pollution parameters used for measuring water quality are analyzed for the sub-drainage basins of Hillsborough County. The relationships between 2002 urban land use, population distribution and their environmental influences are explored using regression analysis against various non-point source pollutant loadings in these sub-drainage basins. The results suggest that strong associations existed between most pollutant loadings and the extent of impervious surface within each sub-drainage basin in 2002. Population density also exhibits apparent correlations with loading rates of several pollutants. Spatial variations of selected non-point source pollutant loadings are also assessed.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.jenvman.2006.11.012","issn":"03014797","usgsCitation":"Xian, G., Crane, M., and Su, J., 2007, An analysis of urban development and its environmental impact on the Tampa Bay watershed: Journal of Environmental Management, v. 85, no. 4, p. 965-976, https://doi.org/10.1016/j.jenvman.2006.11.012.","productDescription":"12 p.","startPage":"965","endPage":"976","numberOfPages":"12","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":238686,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211403,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jenvman.2006.11.012"}],"volume":"85","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e9f7e4b0c8380cd4855e","contributors":{"authors":[{"text":"Xian, G. 0000-0001-5674-2204","orcid":"https://orcid.org/0000-0001-5674-2204","contributorId":65656,"corporation":false,"usgs":true,"family":"Xian","given":"G.","affiliations":[],"preferred":false,"id":430722,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Crane, M.","contributorId":86957,"corporation":false,"usgs":true,"family":"Crane","given":"M.","email":"","affiliations":[],"preferred":false,"id":430723,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Su, J.","contributorId":39187,"corporation":false,"usgs":true,"family":"Su","given":"J.","email":"","affiliations":[],"preferred":false,"id":430721,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
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