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Sage-grouse habitat areas divided into proposed management categories within Nevada and California project study boundaries. HABITAT CATEGORY DETERMINATION The process for category determination was directed by the Nevada Sagebrush Ecosystem Technical team. Sage-grouse habitat was determined from a statewide resource selection function model and first categorized into 4 classes: high, moderate, low, and non-habitat. The standard deviations (SD) from a normal distribution of RSF values created from a set of validation points (10% of the entire telemetry dataset) were used to categorize habitat ‘quality’ classes. 1) High quality habitat comprised pixels with RSF values < 0.5 SD. 2) Moderate > 0.5 and < 1.0 SD. 3)...
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This raster depicts the percentage of lithological the hydraulic conductivity (in micrometers per second) of surface or near surface geology. We derived these rasters by calculating the average conductivity for each map unit in combined surficial-bedrock geologic maps. We used state geologic maps (Preliminary Integrated Geologic Map Databases for the United States, Open File Reports 2004-1355, 2005-1305, 2005-1323, 2005-1324, 2005-1325, 2005-1351, and 2006-1272), which depict surficial geology instead of bedrock when the surficial layers are sufficiently deep. For the state maps that do not incorporate surficial geology (i.e., midwestern states), we overlaid surficial geologic map units with thicknesses greater...
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This data release contains inputs for and outputs from hydrologic simulations of the upper Chattahoochee River Basin in northeast Georgia using the Precipitation Runoff Modeling System (PRMS). These simulations were developed to provide example applications of enhancements to the PRMS for the following topics: two new time-series input options (dynamic parameter module and water-use module), two new output options (Hydrologic Response Unit (HRU) summary output module and basin variables summary output module), and three updates of existing capabilities (stream and lake flow routing module, surface-depression storage and flow simulation, and the initial-conditions specification). These PRMS model input and output...
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The central Platte River Valley represents a key mid-latitude stopover This dataset supports a contemporary analysis of nocturnal roost selection for sandhill cranes staging along the Platte River during 2003-2007. We explored variation in selection for previously established characteristics of roost sites, including river channel width, vegetation height along the river bank, and distance to nearest disturbance feature. This analysis also included novel environmental factors (yearly estimates of corn near roost sites, nightly temperature, wind speed, and river discharge) and how they may interact with the more established characteristics.
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This data collection consists of a synthetic stream network and associated catchments developed as the foundation for a Spatially Referenced Regressions on Watershed Attributes (SPARROW) dissolved-solids source and transport model for the Upper Colorado River Basin (UCRB). The SPARROW model requires a hydrologically connected representation of a stream network through which loads are transported from an upstream reach to the next reach downstream (Schwarz and others, 2006; Moore and others, 2004). Each stream reach or segment within this synthetic stream network has an associated local drainage area or catchment used to calculate catchment characteristics that may have an effect on loads being modeled. The synthetic...
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This data set contains links that are important to each species' habitat network. Those important links are scored based on the percent currently under protection status, projected change in climate suitability by the middle of the 21st century, and projected change in percent urbanized by the middle of the 21st century. Important links were identified from all links in the networks of each species based on their Integral Index of Connectivity (dIIC). Any links with dIIC scores > 0.9 or which connected to nodes with dIIC > 0.9 were retained here as "important" links.
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Forest- Data collected once using GIS prior to fish sampling. Our approach was to focus the study on smaller, headwater catchments because larger streams drained areas containing both hemlock and mixed hardwood forest, making forest-specific comparison intractable. In addition, most of these larger watersheds were impacted by humans (e.g., impoundments, agriculture, quarries) that could confound our assessment of the influence of hemlock. Even after limiting the study to headwater catchments, other possible confounding factors remained; we controlled for landscape variability (i.e., terrain and stream size) through the sampling design and we excluded others (i.e., minimum catchment area,beaver activity) through...
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This dataset was used to summarize and analyze the mortality factors recorderd on dead trees in the Sierra Nevada Forest Dynamics Plot Network, which is managed by the Sequoia and Kings Canyon Field station of the U.S. Geological Survey's Western Ecological Research Center. Each row of the dataset represents an individual dead tree. These are dead trees that were recorded in the network from 1998 to 2010 for the subset of plots as described in the associated manuscript; Das, A.J., Stephenson, N.L., Davis, K.P. 2016. Why do trees die? Characterizing the drivers of background tree mortality. Ecology. 97(10): 2616-2627, http://dx.doi.org/10.1002/ecy.1497


map background search result map search result map Sage-grouse Habitat Categories in Nevada and NE California (August 2014) Geophysical Characteristics of the Conterminous United States: Hydraulic Conductivity (µm/s) Mortality factors for dead trees from a subset of plots from the Sierra Nevada Forest Dynamics Plot Network from 1998 to 2010 Fish Population and Hemlock data in Delware Water Gap Sandhill crane roosts use, channel characteristics, and environmental variables along the Platte River, Nebraska, 2003-2007 Water Balance and Habitat Suitability Data for Pinus Albicaulis in Greater Yellowstone Ecosystem Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T3 from 1976 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P1 from 1977 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P4 from 1977 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T3 from 1979 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P8 from 1988 Model Input and Output for Hydrologic Simulations of the Upper Chattahoochee River Basin that Demonstrate Enhancements to the Precipitation Runoff Modeling System Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P11 from 16 July 1998 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P8 from 14 July 1999 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T9 from 2000 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T9 from 2010 Upper Colorado River Basin SPARROW model catchments and synthetic stream network - 2017 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetlands P8 and T1 from 2015 Cottonwood Lake Study Area-Wetland Vegetation Zones-1986 Important links for Black bear, Rafinesque's big-eared bat, and timber rattlesnake Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T3 from 1976 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T3 from 1979 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P4 from 1977 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T9 from 2010 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland T9 from 2000 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P8 from 1988 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P8 from 14 July 1999 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P1 from 1977 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetlands P8 and T1 from 2015 Cottonwood Lake Study Area-Wetland Vegetation Zones-1986 Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P11 from 16 July 1998 Fish Population and Hemlock data in Delware Water Gap Sandhill crane roosts use, channel characteristics, and environmental variables along the Platte River, Nebraska, 2003-2007 Model Input and Output for Hydrologic Simulations of the Upper Chattahoochee River Basin that Demonstrate Enhancements to the Precipitation Runoff Modeling System Mortality factors for dead trees from a subset of plots from the Sierra Nevada Forest Dynamics Plot Network from 1998 to 2010 Water Balance and Habitat Suitability Data for Pinus Albicaulis in Greater Yellowstone Ecosystem Sage-grouse Habitat Categories in Nevada and NE California (August 2014) Upper Colorado River Basin SPARROW model catchments and synthetic stream network - 2017 Important links for Black bear, Rafinesque's big-eared bat, and timber rattlesnake Geophysical Characteristics of the Conterminous United States: Hydraulic Conductivity (µm/s)