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The Gap Analysis Project (GAP) is an element of the U.S. Geological Survey. GAP helps to implement the Department of the Interior’s goals of inventory, monitoring, research, and information transfer. GAP has three primary goals: Identify conservation gaps that help keep common species common; Provide conservation information to the public so that informed resource management decisions can be made; and Facilitate the application of GAP data and analysis to specific resource management activities. To implement these goals, GAP carries out the following objectives: Map the land cover of the United States Map predicted distributions of vertebrate species for the U.S. Map the location, ownership and stewardship of...
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This collection contains test-hole cores through surficial sediments and shallow bedrock drilled by the Nebraska Geological Survey (Conservation and Survey Division), the Nebraska Department of Roads, the U.S. Army Corps of Engineers, and other organizations, including bedrock cores drilled by petroleum and mineral concerns. A portion of the cores in this collection originated from oil producing areas and areas with potential petroleum development within the Panhandle region of western Nebraska. These cores were drilled by oil companies between 1950-1969 and were later donated to the Nebraska Geological Survey (Conservation and Survey Division). With the assistance of the National Geological and Geophysical...
The Aquatic Gap Project represents the portion of the USGS Gap Analysis Project that focuses on aquatic species found in coastal and inland waters. The goal of the National Aquatic GAP is to evaluate aquatic biological diversity and habitats using spatial analysis and species distribution models to identify gaps in species protection or threats to habitats in order to work toward more effective conservation planning and prioritization. Our current efforts are focused on modeling the rangewide distribution of fish species which are wide ranging, non-habitat specialist, and of specific interest to our natural resource management agency and conservation partners.
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This data release contains observation data, design transects, design strata, analysis estimates output, and associated metadata from the Alaska Arctic Coastal Plain Aerial Breeding Pair Survey. The Alaska Arctic Coastal Plain Aerial Breeding Pair Survey provides data on distribution, abundance, and trend of 33 bird species that nest in northern Alaska. The survey has been conducted in its current form annually since 2007 with the exception of years 2020 and 2021. Methods generally follow the standard operating procedures for the Waterfowl Breeding Population and Habitat Survey. Primary uses of the survey data are to evaluate recovery status of Spectacled Eider (Somateria fischeri) and Steller’s Eider (Polysticta...
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This is a zipped up folder of all data, data products, and metadata for the Arctic Coastal Plain Survey. It includes the quality controlled design and bird observation data and reconstructed flight tracks. Metadata is provided as human-readable html files.


    map background search result map search result map Collection of Cores from Nebraska USGS Gap Analysis Project (GAP) Arctic Coastal Plain Aerial Survey Data Collection Alaska Arctic Coastal Plain Aerial Breeding Pair Survey Packaged Data and Output Files Collection of Cores from Nebraska Arctic Coastal Plain Aerial Survey Data Collection Alaska Arctic Coastal Plain Aerial Breeding Pair Survey Packaged Data and Output Files USGS Gap Analysis Project (GAP)