150 datasets found for "Population Density"
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Federal
Biological and physical data for zebra mussel (Dreissena polymorpha) veligers collected from a coupled lake-stream ecosystem in north Texas, 2012-2014
Department of the Interior —
Dispersal, establishment, and spread of aquatic invasive species such as the zebra mussel (Dreissena polymorpha) can be influenced by riverine velocities and... -
Federal
Annual California Sea Otter Census: 2019 Census Summary Shapefile
Department of the Interior —
The GIS shapefile Census_sum_2019 provides a standardized tool for examining spatial patterns in abundance and demographic trends of the southern sea otter (Enhydra... -
Federal
U.S. Geological Survey - Gap Analysis Project Species Habitat Maps CONUS_2001 NGDA
Department of the Interior —
Gap Analysis Project (GAP) habitat maps are predictions of the spatial distribution of suitable environmental and land cover conditions within the United States for... -
Federal
Grizzly Bear Space Use in the US Northern Rocky Mountains (ver. 3.0, July 2024)
Department of the Interior —
Over the past two centuries, persecution and habitat loss caused grizzly bears (Ursus arctos) to decline from a population of approximately 50,000 individuals to only... -
Federal
County-Level Estimates of Nitrogen and Phosphorus from Commercial Fertilizer for the Conterminous United States, 1987-2012
Department of the Interior —
This data set contains county-level estimates of nitrogen and phosphorus from fertilizer, for both farm and nonfarm uses, for the conterminous United States, for 1987... -
Federal
Mountain Plover population and habitat assessments in Texas, 2019–2020
Department of the Interior —
We conducted population and habitat assessments for Mountain Plovers in Texas during winters of 2019 and 2020. We used roadside surveys and distance-sampling to... -
Federal
Airborne magnetic and radiometric survey, Maryland, Pennsylvania, and West Virginia, 2022-2023
Department of the Interior —
This data release provides digital flight-line and gridded data for a high-resolution airborne magnetic and radiometric survey over parts of Maryland, Pennsylvania,... -
Federal
California Mule Deer Siskiyou Corridors
Department of the Interior —
The Siskiyou mule deer herd migrates from winter ranges primarily north and east of Mount Shasta (i.e., Day Bench, Lake Shastina, Montague, Mount Dome, Mount Hebron,... -
Federal
Distance-power relationship data for Hawaiˊi ˊamakihi (Chlorodrepanis virens) calls in Hakalau Forest NWR, Hawaiˊi, data collected in 2015
Department of the Interior —
Distance-power relationship data we used to create and evaluate a protocol to estimate population density, which can be used to compute abundance of terrestrial... -
Federal
Median estimates of raven density in California, Nevada, and Idaho (2012 - 2019)
Department of the Interior —
Rasters representing median raven density estimates, calculated from approximately 28,000 raven point count surveys conducted between 2009 and 2019. Estimates were... -
Federal
Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in shallow, recently recharged ground water -- Input data set for fresh surface water withdrawal (gwava-s_swus)
Department of the Interior —
This data set represents the amount of fresh surface water withdrawal for irrigation, in megaliters per day, in the conterminous United States. The data set was used... -
Federal
Changes in anthropogenic influences on streams and rivers in the conterminous U.S. over the last 40 years, derived for 16 data themes
Department of the Interior —
This product consists of time-series calculations of anthropogenic characteristics derived for 16 data themes for multiple scales covering the conterminous United... -
Federal
U.S. Geological Survey GAGES-II time series data from consistent sources of land use, water use, agriculture, timber activities, dam removals, and other historical anthropogenic influences
Department of the Interior —
This product is a series of ten datasets containing tabular data from historical time series sources for the 9,067 conterminous United States sites in the U.S.... -
Federal
Spatial distribution and risk analysis data for diamond-backed terrapins relative to crab trapping, Savannah Coastal Refuge Complex, USA
Department of the Interior —
There were five objects for compiling these data: 1) to conduct a systematic inventory of diamond-backed terrapins (Malaclemys terrapin) using headcount surveys on... -
Federal
Captures and trapping effort for deer mice (Peromyscus sonoriensis) at Point Reyes National Seashore, California, USA from 2021 to 2022
Department of the Interior —
These data represent trapping effort and captures of deer mice at Point Reyes National Seashore, Marin County, California. Deer mice were captured and marked with ear... -
Federal
Zebra Mussel Density - Assessment of uncontained Zequanox applications in a Midwestern lake data
Department of the Interior —
We applied Zequanox using a custom-engineered, boat mounted application system to replicated 0.30 Hectare plots within a small inland lake. The objectives of these... -
Federal
Hurricane Sandy induced changes to piping plover nesting habitat on Edwin B. Forsythe National Wildlife Refuge, New Jersey
Department of the Interior —
The barrier islands and coastal beaches along the Atlantic Coast are dynamic systems continuously affected and shaped by tides and weather events (Davidson-Arnott... -
Federal
Zequanox Concentration - Assessment of uncontained Zequanox applications in a Midwestern lake data
Department of the Interior —
We applied Zequanox using a custom-engineered, boat mounted application system to replicated 0.30 Hectare plots within a small inland lake. The objectives of these... -
Federal
Sea Otter Aerial Survey Data from Lower Cook Inlet and the Outer Kenai Peninsula, Alaska, 2002
Department of the Interior —
This dataset consists of three tables related to abundance and distribution of northern sea otters (Enhydra lutris kenyoni) in lower Cook Inlet and the outer Kenai... -
Federal
Washington White-Tailed Deer Selkirk Winter Range
Department of the Interior —
The Selkirk White-tailed Deer Management Zone (WDMZ) is home to the largest population of white-tailed deer in the state and consists of seven Game Management Units...
150 datasets found for "Population Density"