Found 18 datasets matching filters.
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The North Pacific Pelagic Seabird Database (NPPSD) is maintained by the USGS Alaska Science Center and includes survey transect data designed and conducted by numerous partners primarily to census...
Search relevance: 1.00 | Views last month: 2 | Published on: 2026-03-03 -
Crested (Aethia cristatella) and Least Auklets (Aethia pusilla) are crevice-nesting birds that breed in large mixed colonies at relatively few sites in the Aleutian Chain, Bering Sea, Gulf of...
Search relevance: 1.00 | Views last month: 2 | Published on: 2026-03-03 -
Da0_MASS is a polygon shapefile representing 5 minute x 5 minute latitude x longitude cells that house the overall total biomass densities (kg/sq.km.) of 76 species of marine birds in the Davidson...
Search relevance: 1.00 | Views last month: 1 | Published on: 2025-12-19 -
Up0dens is a polygon shapefile representing 5 minute x 5 minute latitude x longitude cells that contain the overall, combined densities (birds/sq km), of 76 species of marine birds in the CDAS...
Search relevance: 1.00 | Views last month: 1 | Published on: 2025-12-19 -
This file contains the flight trackline Global Positioning System (GPS) point data from the aerial surveys. Surveys were flown at 60 meters (200 feet) above sea level at 160 kilometers per hour...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
A shapefile of five minute grids with summary information on at-sea bird surveys from 1980-2001. Bird densities by ocean season, by species.
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-12-19 -
Broad survey lines, island radial survey lines, coastal survey lines, and focal-area (Santa Barbara Channel) survey lines were surveyed during each oceanographic season: spring (May), fall...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
AL3_MASS is a polygon shapefile representing 5 minute x 5 minute latitude x longitude cells that house the overall total biomass densities (kg/sq km) of up to 76 species of marine birds during...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-12-19 -
Oc0_dens is a polygon shapefile representing 5 minute x 5 minute latitude x longitude cells that contain the overall, combined densities (birds/sq km), of 76 species of marine birds in the CDAS...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-12-19 -
Background - Interest in developing alternative sources of renewable energy to reduce dependence on oil has increased in recent years. Some sources of renewable energy being considered will...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
Da0_dens is a polygon shapefile representing 5 minute x 5 minute latitude x longitude cells that contain the overall, combined densities (birds/sq km), of 76 species of marine birds in the CDAS...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-12-19 -
Oc0_MASS is a polygon shapefile representing 5 minute x 5 minute latitude x longitude cells that house the overall total biomass densities (kg/sq km) of 76 species of marine birds in the Oceanic...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-12-19 -
Tracklines and associated observations were mapped and analyzed using ArcMap (ESRI, Redlands, CA). GPS data were recorded in NAD27 map datum and projected to an USGS Albers Equal Area Conic map...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
AL2_MASS is a polygon shapefile representing 5 minute x 5 minute latitude x longitude cells that house the overall total biomass densities (kg/sq.km.) of up to 76 species of marine birds during...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-12-19 -
AL0_MASS is a polygon shapefile representing 5 minute x 5 minute latitude x longitude cells that house the overall total biomass densities (kg/sq.km.) of 76 species of marine birds regardless of...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-12-19 -
Tracklines and associated observations were mapped and analyzed using ArcMap (ESRI, Redlands, CA). GPS data were recorded in NAD27 map datum and projected to an USGS Albers Equal Area Conic map...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
Up0_mass is a polygon shapefile representing 5 minute x 5 minute latitude x longitude cells that house the overall total biomass densities (kg/sq km) of 76 species of marine birds in the Upwelling...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-12-19 -
A shapefile of five minute grids that contains marine bird density data at-sea from the CDAS Central CA data set (1980-2001). It is a shapefile representing 5 minute x 5 minute latitude x...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-12-19
