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Filters Date Range Past year (16) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Steve Hanser U.S. Geological Survey - ScienceBase Ecosystems Forest and Rangeland Ecosystem Science Center U.S. Geological Survey More... Categories pre-SM502.8 (9) Data Release - Revised (1) Tag Types Theme (26) Place (26) USGS Scientific Topic Keyword (23) Harvest Set (24) Tag Schemes None (17) USGS Thesaurus (18) Common geographic areas (15) ISO 19115 Topic Category (26) Geospatial One Stop (5) Alexandria Digital Library Feature Type Thesaurus (3) Geographic Names Information System (GNIS) (1) View Results as: JSON ATOM CSV

Green-tailed towhee probability of occurrence in the Wyoming Basins Ecoregional Assessment area Probability map of green-tailed towhee occurrence in relation to vegetation, abiotic, and anthropogenic features. These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. Categories: pre-SM502.8; Tags: Colorado, Ecology, Great Basin, Idaho, Land Use Change, All tags... Land Use Change, Montana, Probability of occurrence, USGS Science Data Catalog (SDC), Utah, Wildlife Biology, Wildlife Biology, Wyoming, biota, environment, geoscientificInformation, geospatial datasets, green-tailed towhee, modeling, scientific interpretation, shrubland ecosystems, Fewer tags Predicted 2020 densities for 11 songbird species across the western United States Informed wildlife management requires robust information regarding population status, habitat requirements, and likely responses to changing resource conditions. Growing evidence indicates single species management may inadequately conserve communities and result in undesired effects to non-target species. Thus, management can benefit from habitat relationship information for multiple species within, and across, ecosystems. Using 13 years of point count data (2008-2020) collected across the western United States and a suite of relevant covariates for habitat, we fit hierarchical models to characterize and predict songbird densities and evaluate population trends for 11 species of interest: Bewick’s Wren (Thryomanes... Tags: Ecology, USGS Science Data Catalog (SDC), United States, Wildlife Biology, biota, All tags... hierarchical abundance model, pinyon-juniper, sagebrush, Fewer tags Brewer's sparrow density in the Wyoming Basins Ecoregional Assessment area Map of Brewer's sparrow density (birds/ha) in relation to vegetation, abiotic, and anthropogenic features. These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. Categories: pre-SM502.8; Tags: Brewer's sparrow, Colorado, Ecology, Idaho, Land Use Change, All tags... Montana, Spizella breweri, USGS Science Data Catalog (SDC), United States, Utah, Wildlife Biology, Wyoming, biota, density, environment, geoscientificInformation, geospatial datasets, modeling, scientific interpretation, shrubland ecosystems, Fewer tags Lark sparrow distribution in the Wyoming Basins Ecoregional Assessment area Map of lark sparrow distribution developed from an abundance map created using multi-scale vegetation, abiotic, and anthropogenic features. These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. Categories: pre-SM502.8; Tags: Colorado, Distribution, Ecology, Environment and Conservation, Idaho, All tags... Land Use Change, Land Use Change, Lark sparrow, Montana, USGS Science Data Catalog (SDC), United States, Utah, Wildlife Biology, Wildlife Biology, Wyoming, biota, environment, geoscientificInformation, geospatial datasets, modeling, scientific interpretation, shrubland ecosystems, Fewer tags Sage thrasher density in the Wyoming Basins Ecoregional Assessment area Map of sage thrasher density (birds/ha) in relation to vegetation, abiotic, and anthropogenic features. These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. Categories: pre-SM502.8; Tags: Colorado, Ecology, Idaho, Land Use Change, Montana, All tags... USGS Science Data Catalog (SDC), Utah, Western United States, Wildlife Biology, Wyoming, biota, density, environment, geoscientificInformation, geospatial datasets, modeling, sage thrasher, scientific interpretation, shrubland ecosystems, Fewer tags U.S. range-wide spatial prediction layers of lek persistence probabilities for greater sage-grouse This dataset contains two predictive lek (breeding site) persistence raster layers covering the U.S. greater sage-grouse distribution. In the United States, locations where males display and breed with females (i.e., leks) are often monitored annually by state wildlife agencies, providing valuable information on the persistence of birds in the surrounding areas. A U.S. range-wide lek database was recently compiled for greater sage-Grouse (O’Donnell et al. 2021), providing a standardized source of information to build statistical models to evaluate environmental characteristics associated with lek persistence. The compiled lek database classified a subset of leks as being either active (leks currently used for breeding... Tags: California, Colorado, Ecology, Idaho, Montana, All tags... Nevada, North Dakota, Oregon, South Dakota, USGS Science Data Catalog (SDC), United States, Utah, Washington, Wildlife Biology, Wyoming, biota, greater sage-grouse, lek persistence, Fewer tags Sage sparrow density in the Wyoming Basins Ecoregional Assessment area Map of Sage sparrow density (birds/ha) in relation to vegetation, abiotic, and anthropogenic features. These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. Categories: pre-SM502.8; Tags: Colorado, Ecology, Idaho, Land Use Change, Land Use Change, All tags... Montana, Sage sparrow, USGS Science Data Catalog (SDC), Utah, Western US, Wildlife Biology, Wildlife Biology, Wyoming, biota, density, environment, geoscientificInformation, geospatial datasets, modeling, scientific interpretation, shrubland ecosystems, Fewer tags Brewer's sparrow distribution in the Wyoming Basins Ecoregional Assessment area Map of Brewer's sparrow distribution developed from an abundance map created using multi-scale vegetation, abiotic, and anthropogenic features. These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. Categories: pre-SM502.8; Tags: Brewer's sparrow, Colorado, Distribution, Ecology, Environment and Conservation, All tags... Idaho, Land Use Change, Montana, USGS Science Data Catalog (SDC), United States, Utah, Wildlife Biology, Wyoming, biota, environment, geoscientificInformation, geospatial datasets, modeling, scientific interpretation, shrubland ecosystems, Fewer tags Greater sage-grouse genetic warning system, western United States (ver 1.1, January 2023) Genetic variation is a well-known indicator of population fitness yet is not typically included in monitoring programs for sensitive species. Additionally, most programs monitor populations at one scale, which can lead to potential mismatches with ecological processes critical to species’ conservation. Recently developed methods generating hierarchically nested population units (i.e., clusters of varying scales) for greater sage-grouse (Centrocercus urophasianus) have identified population trend declines across spatiotemporal scales to help managers target areas for conservation. The same clusters used as a proxy for spatial scale can alert managers to local units (i.e., fine-scale) with low genetic diversity relative... Categories: Data Release - Revised; Tags: California, Centrocercus urophasianus, Colorado, Greater sage-grouse, Idaho, All tags... Montana, Nevada, North Dakota, Oregon, South Dakota, USGS Science Data Catalog (SDC), United States, Utah, Washington, Wyoming, adaptive management, biota, boundaries, conservation genetics, genetic diversity, genetic monitoring, hierarchical sampling units, population monitoring, western United States, Fewer tags State-and-Transition Simulation Models to explore post-fire habitat restoration in three greater sage-grouse (Centrocercus urophasianus) Priority Areas for Conservation, USA (2018-2068) Wildfires are increasingly modifying wildlife habitat in the western United States and managers need ways to scope the pace and degree to which post-fire restoration actions can re-create habitat in dynamic landscapes. We simulated post-fire revegetation and greater sage-grouse (Centrocercus urophasianus) habitat restoration using a spatially explicit state-transition simulation model (STSM) developed for sagebrush ecosystems. The STSM represented the vegetation dynamics of the sagebrush ecosystem and included annual fires, annual grass invasion, conifer encroachment, and sagebrush revegetation restoration. We compared simulated vegetation output with sage-grouse perennial grass and sagebrush cover habitat needs... Tags: California, Centrocercus urophasianus, Ecology, Greater sage-grouse, Klamath OR/CA Priority Area for Conservation, All tags... NW Interior NV Priority Area for Conservation, Nevada, Oregon, Sagebrush biome, Strawberry Priority Area for Conservation, USGS Science Data Catalog (SDC), United States, Utah, annual grass cover, biota, environment, perennial grass cover, pinyon-juniper cover, post-fire restoration, sage-grouse habitat, sagebrush cover, sagebrush revegetation, state-and-transition simulation model, vegetation change, Fewer tags Gunnison sage-grouse predicted gene flow (conductance) surfaces, Colorado, United States Habitat fragmentation and degradation impacts an organism's ability to navigate the landscape, ultimately resulting in decreased gene flow and increased extinction risk. Understanding how landscape composition impacts gene flow (i.e., connectivity) and interacts with scale is essential to conservation decision-making. We used a landscape genetics approach implementing a recently developed statistical model based on the generalized Wishart probability distribution to identify the primary landscape features affecting gene flow and estimate the degree to which each component influences connectivity for Gunnison sage-grouse (Centrocercus minimus). We were interested in two spatial scales: among distinct populations... Tags: Centrocercus minimus, Colorado, Ecology, Gunnison sage-grouse, USGS Science Data Catalog (SDC), All tags... United States, Utah, Wildlife Biology, adaptive management, biota, conservation genetics, gene flow, genetic connectivity, landscape genetics, western United States, Fewer tags Maps of multiple future threats and stable areas for Gunnison sage-grouse habitats across three scenarios (2016-2070) This dataset contains a series of maps of projected threats and current state of habitats for the threatened Gunnison sage-grouse (Centrocercus minimus). The maps are 30-m spatially explicit projections of current habitats (2016) and future landscape change (by 2070) for the full range of the species’ seven extant populations, which cover diverse ecoregions of the imperiled sagebrush biome of the western United States. Risk maps assessed projected changes caused by climate change-driven shifts in sagebrush habitats, mesic habitats, pinyon-juniper encroachment, and invasive annual grasses, as well as potentially synergistic risk of development and wildfire. We used a scenario-based risk assessment framework based... Tags: Colorado, Ecology, Gunnison, USGS Science Data Catalog (SDC), Utah, All tags... birds, effects of climate change, environment, environmental assessment, geospatial datasets, land use change, risk assessment, spatial analysis, Fewer tags Time series of circuit-based relative flow patterns for sagebrush structural connectivity from 1985 to 2020 This raster dataset quantifies the relative flow patterns of structural sagebrush connectivity in the sagebrush biome at 270-meter resolution. Connectivity was calculated using an omnidirectional circuit-based algorithm, with sources, targets, and conductance based on sagebrush fractional component from the RCMAP sagebrush products for 1985, 1990, 1995, 2000, 2005, 2010, 2015, and 2020. Normalized cumulative current density was used to represent relative flow of connectivity and binned into 3 relative flow classes (impeded, diffuse, and channelized flow). We calculated the relative flow temporal trends for channelization and impedance between 1985 and 2020 to identify areas that were becoming more channelized or... Tags: Arizona, California, Colorado, Idaho, Montana, All tags... Nevada, New Mexico, North Dakota, Oregon, South Dakota, United States, Utah, Washington, Wyoming, biota, connectivity, environment, geoscientificInformation, habitat fragmentation, sagebrush, sagebrush biome, sagebrush biome, shrubland, shrubland ecosystems, shrublands, spatial analysis, structural connectivity, terrestrial ecosystems, time series analysis, time series datasets, Fewer tags Time series of circuit-based sagebrush structural connectivity from 1985 to 2020 This raster dataset quantifies the structural sagebrush connectivity in the sagebrush biome at 270-meter resolution. Connectivity was calculated using an omnidirectional circuit-based algorithm, with sources, targets, and conductance based on sagebrush fractional component from the RCMAP sagebrush products for 1985, 1990, 1995, 2000, 2005, 2010, 2015, and 2020. Cumulative current density was used to represent connectivity and binned into 20 quantile-based classes. Tags: Arizona, California, Colorado, Idaho, Montana, All tags... Nevada, New Mexico, North Dakota, Oregon, South Dakota, United States, Utah, Washington, Wyoming, biota, connectivity, environment, geoscientificInformation, habitat fragmentation, sagebrush, sagebrush biome, sagebrush biome, shrubland, shrubland ecosystems, shrublands, spatial analysis, structural connectivity, terrestrial ecosystems, time series analysis, time series datasets, Fewer tags Prioritized sites for conifer removal within the Utah portion of Bird Conservation Region 16, 2020 Individual species often drive habitat restoration action; however, management under this paradigm may negatively affect non-target species. Prioritization frameworks which explicitly consider benefits to target species while minimizing consequences for non-target species may drastically improve management strategies. We examined extents to which conifer removal, an approach frequently implemented to restore sagebrush ecosystems, can be conducted without detrimental effects to conifer-associated species, including the imperiled Pinyon Jay (Gymnorhinus cyanocephalus). Additionally, we predicted abundance responses for multiple species following simulated conifer removal at sites selected to achieve variable management... Tags: Ecology, USGS Science Data Catalog (SDC), United States, Utah, Wildlife Biology, All tags... biota, conifer removal, multi-species management, non-target species, pinyon-juniper, sagebrush, songbirds, Fewer tags Green-tailed towhee distribution in the Wyoming Basins Ecoregional Assessment area Map of Green-tailed towhee distribution developed from a probability of occurrence map created using multi-scale vegetation, abiotic, and anthropogenic features. These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. Categories: pre-SM502.8; Tags: Colorado, Distribution, Ecology, Environment and Conservation, Great Basin, All tags... Green-tailed towhee, Idaho, Land Use Change, Land Use Change, Montana, USGS Science Data Catalog (SDC), United States, Utah, Wildlife Biology, Wildlife Biology, Wyoming, biota, environment, geoscientificInformation, geospatial datasets, modeling, scientific interpretation, shrubland ecosystems, Fewer tags Predicted Pinyon Jay (Gymnorhinus cyanocephalus) densities across the western United States, 2008-2020 Management intended to benefit a target species may also affect non-target species that co-occur over space and time. Pinyon jay (Gymnorhinus cyanocephalus) populations experienced long-term declines and rely on habitat that could be lost to conifer removal programs for greater sage-grouse (Centrocercus urophasianus). Using 13 years of point count data (2008-2020) collected across the western United States and a suite of relevant covariates for habitat, we fit a hierarchical model to characterize and predict pinyon jay densities and evaluate population trends. The resulting maps include pinyon jay density at the beginning (PIJA_2008_PredictedDensity.tif) and end (PIJA_2020_PredictedDensity.tif) of our study period,... Tags: Ecology, USGS Science Data Catalog (SDC), United States, biota, hierarchical abundance model, All tags... pinyon jay, pinyon-juniper, sagebrush, Fewer tags Lark sparrow density in the Wyoming Basins Ecoregional Assessment area Map of lark sparrow density (birds/ha) in relation to vegetation, abiotic, and anthropogenic features. These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. Tags: Colorado, Ecology, Idaho, Land Use Change, Lark sparrow, All tags... Montana, USGS Science Data Catalog (SDC), Utah, Western United States, Wildlife Biology, Wyoming, biota, density, environment, geoscientificInformation, geospatial datasets, modeling, scientific interpretation, shrubland ecosystems, Fewer tags A neutral landscape approach to evaluating the umbrella species concept for greater sage-grouse in northeast Wyoming, USA Greater sage-grouse (Centrocercus urophasianus) has been identified as a potential umbrella species with the assumption that conservation of their habitats in sagebrush ecosystems may benefit multiple other wildlife species, but co-occurrence with an umbrella species does not necessarily guarantee species will respond positively to management for sage-grouse. This may be particularly true for ecotones, such as at the eastern edge of the sage-grouse range where sagebrush steppe and Great Plains grasslands intersect. We used a novel application of neutral landscape models (Etherington et al., 2015) to evaluate observed and expected overlap between greater sage-grouse habitat (1994-2010; Fedy et al., 2014) and distribution... Tags: Ecology, Monte Carlo simulation, Northeast Wyoming, USGS Science Data Catalog (SDC), United States of America, All tags... Wyoming, biogeography, biota, birds, community ecology, ecosystem monitoring, grassland ecosystems, grassland songbirds, habitat suitability indices, habitats, keystone species, mathematical simulation, migratory species, natural resource management, neutral landscape models, sagebrush, shrubland ecosystems, species co-occurrence, umbrella species, Fewer tags Data and analytical code assessing eleven songbird species' responses to environmental change during summertime (2008 - 2020) in the InterMountain West, USA This data release provides avian data for 11 songbird species (Bewick’s wren [Thryomanes bewickii], black-throated gray warbler [Setophaga nigrescens], Brewer’s sparrow [Spizella breweri], gray flycatcher [Empidonax wrightii], gray vireo [Vireo vicinior], green-tailed towhee [Pipilo chlorurus], juniper titmouse [Baeolophus ridgwayi], loggerhead shrike [Lanius ludovicianus], sagebrush sparrow [Artemisiospiza nevadensis], sage thrasher [Oreoscoptes montanus], and Townsend’s solitaire [Myadestes townsendi]) associated with summertime point count surveys conducted throughout the InterMountain West under the Integrated Monitoring in Bird Conservation Regions (IMBCR) program, 2008 - 2020. Additionally, remotely sensed... Tags: Arizona, California, Colorado, Ecology, Idaho, All tags... InterMountain West, Kansas, Montana, Nebraska, Nevada, North Dakota, Oklahoma, Remote Sensing, South Dakota, USGS Science Data Catalog (SDC), United States, Utah, Wildlife Biology, Wyoming, biological population management, birds, ecological processes, ecosystem management, forest ecosystems, geoscientificInformation, habitats, wildlife population management, Fewer tags 1 2 »