U.S. Geological Survey Gap Analysis Program

Metadata Updated: December 11, 2017

The Gap Analysis Program (GAP) is an element of the U.S. Geological Survey (USGS). GAP helps to implement the Department of Interior?s goals of inventory, monitoring, research, and information transfer. GAP has three primary goals: 1 Identify conservation gaps that help keep common species common; 2 Provide conservation information to the public so that informed resource management decisions can be made; and 3 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 protected areas --Document the representation of vertebrate species and land cover types in areas managed for the long-term maintenance of biodiversity --Provide this information to the public and those entities charged with land use research, policy, planning, and management --Build institutional cooperation in the application of this information to state and regional management activities. GAP provides the following data and web services: The Protected Areas Database of the United States (PAD-US) is a geodatabase that illustrates and describes public land ownership, management and other conservation lands, including voluntarily provided privately protected areas. The PADUS GAP Status Layer web service can be found at http://gis1.usgs.gov/arcgis/rest/services/gap/PADUS_Status/MapServer . The Land Cover Data creates a seamless data set for the contiguous United States from the four regional Gap Analysis Projects and the LANDFIRE project. The Raster data in both ArcGIS Grid and ERDAS Imagine format is available for download at http://gis1.usgs.gov/csas/gap/viewer/land_cover/Map.aspx . In addition to the raster datasets the data is available in Web Mapping Services (WMS) format for each of the six NVC classification levels (Class, Subclass, Formation, Division, Macrogroup, Ecological System) at the following links. http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Class_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Subclass_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Formation_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Division_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Macrogroup_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_Ecological_Systems_Landuse/MapServer The GAP species range data show a coarse representation of the total areal extent of a species or the geographic limits within which a species can be found (Morrison and Hall 2002). The GAP species distribution models represent the areas where species are predicted to occur based on habitat associations. A full report documenting the parameters used in each species model can be found via: http://gis1.usgs.gov/csas/gap/viewer/species/Map.aspx Web map services for species distribution models can be accessed from: http://gis1.usgs.gov/arcgis/rest/services/NAT_Species_Birds http://gis1.usgs.gov/arcgis/rest/services/NAT_Species_Mammals http://gis1.usgs.gov/arcgis/rest/services/NAT_Species_Amphibians http://gis1.usgs.gov/arcgis/rest/services/NAT_Species_Reptiles A table listing all of GAP's available web map services can be found here: http://gapanalysis.usgs.gov/species/data/web-map-services/

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Date December 2, 2013
Metadata Created Date December 1, 2017
Metadata Updated Date December 11, 2017
Reference Date(s) May 1, 2013 (publication)
Frequency Of Update asNeeded
Frequency Of Update asNeeded

Metadata Source

Harvested from DOI CKAN Harvest Source

Graphic Preview

Thumbnail of GAP graphic. (92px x 112px). Source from Core Science Analytics and Synthesis (CSAS) page. URL http://www.usgs.gov/core_science_systems/csas/activities.html

Additional Metadata

Resource Type Dataset
Metadata Date December 2, 2013
Metadata Created Date December 1, 2017
Metadata Updated Date December 11, 2017
Reference Date(s) May 1, 2013 (publication)
Responsible Party USGS Core Science Systems, Core Science Analytics and Synthesis, Gap Analysis Program (Point of Contact)
Contact Email
Access Constraints Use Constraints: It is strongly recommended that these data are directly acquired from the U.S. Geological Survey Gap Analysis Program server, and not indirectly through other sources, which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the individual metadata files associated with these data. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. All information is created with a specific end use or uses in mind. This is especially true for GIS data, which is expensive to produce and must be directed to meet the immediate program needs. Appropriate uses of the data: primarily as a coarse map for a large area such as a county or to provide context for finer-level maps. The digital land cover dataset may be used for various purposes with user?s discretion. Specifically, this dataset was created for regional terrestrial biodiversity assessment. These data are not intended to be used at scales larger than 1:100,000., Access Constraints: None
Bbox East Long -66
Bbox North Lat 70
Bbox South Lat 17
Bbox West Long -178
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description Thumbnail of GAP graphic. (92px x 112px). Source from Core Science Analytics and Synthesis (CSAS) page. URL http://www.usgs.gov/core_science_systems/csas/activities.html
Graphic Preview File http://www.usgs.gov/core_science_systems/csas/images/gap2.jpg
Graphic Preview Type JPG
Harvest Object Id 3269bd8c-644e-4400-bb67-5fa6ccfc8302
Harvest Source Id 1f3ebea5-58d2-4aaa-85a0-e7ebda3074e7
Harvest Source Title DOI CKAN Harvest Source
Licence N/A
Metadata Language
Metadata Type geospatial
Progress underDevelopment
Spatial Data Service Type
Spatial Reference System
Spatial Harvester true
Temporal Extent Begin 1989-01-01
Temporal Extent End 2013-01-01

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