U.S. Geological Survey - Gap Analysis Project Species Range Maps CONUS_2001

Metadata Updated: May 1, 2019

GAP species range data are coarse representations of the total areal extent a species occupies, in other words the geographic limits within which a species can be found (Morrison and Hall 2002). These data provide the geographic extent within which the USGS Gap Analysis Project delineates areas of suitable habitat for terrestrial vertebrate species in their species habitat maps. The range maps are created by attributing a vector file derived from the 12-digit Hydrologic Unit Dataset (USDA NRCS 2009). Modifications to that dataset are described here . Attribution of the season range for each species was based on the literature and online sources (See Cross Reference section of the metadata). Attribution for each hydrologic unit within the range included values for origin (native, introduced, reintroduced, vagrant), occurrence (extant, possibly present, potentially present, extirpated), reproductive use (breeding, non-breeding, both) and season (year-round, summer, winter, migratory, vagrant). These species range data provide the biological context within which to build our species distribution models. Versioning, Naming Conventions and Codes: A composite version code is employed to allow the user to track the spatial extent, the date of the ground conditions, and the iteration of the data set for that extent/date. For example, CONUS_2001v1 represents the spatial extent of the conterminous US (CONUS), the ground condition year of 2001, and the first iteration (v1) for that extent/date. In many cases, a GAP species code is used in conjunction with the version code to identify specific data sets or files (i.e. Cooper’s Hawk Habitat Map named bCOHAx_CONUS_2001v1_HabMap).

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 August 10, 2018
Metadata Created Date May 1, 2019
Metadata Updated Date May 1, 2019
Reference Date(s) July 1, 2018 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from DOI CKAN Harvest Source

Additional Metadata

Resource Type Dataset
Metadata Date August 10, 2018
Metadata Created Date May 1, 2019
Metadata Updated Date May 1, 2019
Reference Date(s) July 1, 2018 (publication)
Responsible Party U.S. Geological Survey/Core Science Analytics, Synthesis, and Libraries (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 and not indirectly through other sources, which may have modified the data in some way. The Digital Object Identifiers for each species habitat map provide the persistent reference that should be used to obtain the maps for use. While these data were produced in support of the National Gap Analysis Project, it is expected that they would be used for other applications; therefore, we list below both appropriate and inappropriate uses. For many uses, it is unlikely that this dataset will provide the only data needed, and for uses with a regulatory outcome, field surveys should be conducted to verify the result. These models represent predictions of the locations of suitable habitat for the species and are not models of species occupancy. There are many reasons why a habitat may not be occupied at a particular point in time. Additionally, these maps should not necessarily supersede existing distribution models for species of management concern. This includes smaller scale, regional maps for populations of species modeled by USGS. Appropriate uses of the data: Primarily as a coarse map for a large area such as a state or to provide context for finer-level maps. A general list of possible applications include: -National, regional or statewide biodiversity planning -National, Regional or state habitat conservation planning -Large-area resource management planning -Coarse-filter evaluation of potential impacts or benefits of major projects or plan initiatives on biodiversity, such as utility or transportation corridors, wilderness proposals, habitat connectivity proposals, climate change adaptation proposals, regional open space and recreation proposals, etc. -Determining relative amounts of management responsibility for specific biological resources among land stewards to facilitate cooperative management and planning -Basic research on regional distributions of plants and animals and to help target both specific species and geographic areas for needed research -Environmental impact assessment for large projects or military activities -Estimation of potential economic impacts from loss of biological resource-based activities -Education at all levels and for both students and citizens. Inappropriate Uses: -Using the data to map small areas (less than thousands of hectares), typically requiring mapping at 1:24,000 scale and using aerial photographs or ground surveys -Combining these data with other data finer than 1:100,000 scale to produce new hybrid maps or answer queries -Establishing exact boundaries for regulation or acquisition -Establishing definite occurrence or non-occurrence of a species for an exact geographic area -Determining abundance, health, or condition of a species -Establishing a measure of accuracy of other species models by comparison with the Gap Analysis Project species distribution models -Using the data without acquiring and reviewing the metadata., Access Constraints: none
Bbox East Long -66.8993
Bbox North Lat 49.3844
Bbox South Lat 24.4646
Bbox West Long -124.8292
Coupled Resource
Frequency Of Update asNeeded
Harvest Object Id 899db9ac-09f1-42aa-b7f2-6f3be6472875
Harvest Source Id 34ce571b-cb98-4e0b-979f-30f9ecc452c5
Harvest Source Title DOI CKAN Harvest Source
Licence Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
Metadata Language
Metadata Type geospatial
Progress underDevelopment
Spatial Data Service Type
Spatial Reference System
Spatial Harvester true
Temporal Extent Begin 2001-01-01
Temporal Extent End 2016-01-01

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