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Publication Details

Bailey's ecoregions and subregions of the United States, Puerto Rico, and the U.S. Virgin Islands Data publication contains GIS data
Bailey, Robert G.
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How to Cite:
These data were collected using funding from the U.S. Government and can be used without additional permissions or fees. If you use these data in a publication, presentation, or other research product please use the following citation:
Bailey, Robert G. 2016. Bailey's ecoregions and subregions of the United States, Puerto Rico, and the U.S. Virgin Islands. Fort Collins, CO: Forest Service Research Data Archive.
This map is commonly called Bailey's ecoregions and shows ecosystems of regional extent in the United States, Puerto Rico, and the U.S. Virgin Islands, based on conditions in 1994. Four levels of detail are included to show a hierarchy of ecosystems. The largest ecosystems are domains, which are groups of related climates and which are differentiated based on precipitation and temperature. Divisions represent the climates within domains and are differentiated based on precipitation levels and patterns as well as temperature. Divisions are subdivided into provinces, which are differentiated based on vegetation or other natural land covers. The finest level of detail is described by subregions, called sections, which are subdivisions of provinces based on terrain features. Also identified are mountainous areas that exhibit different ecological zones based on elevation. Also included are maps of the Bailey Ecoregions of the United States in multiple formats and sizes.

NGDA; National Geospatial Data Asset; Biodiversity and Ecosystems Theme; biota; environment; Climate change; Ecology, Ecosystems, & Environment; ecoregions; Bailey's ecoregions; ecosystems; regional ecology; ecosystem geography; mapping; conterminous United States of America; United States of America; Puerto Rico; U.S. Virgin Islands; Alaska; Hawaii
Related publications:
  • Bailey, Robert G. 1995. Description of the ecoregions of the United States. 2nd edition revised and expanded (1st edition 1980) Edition. Misc. Publ. 1391 (rev.). Washington, DC: USDA Forest Service. 108 pages with separate map at 1:7,500,000
  • Bailey, Robert G.; Avers, Peter E.; King, Thomas; McNab, W. Henry; eds. 1994. Ecoregions and subregions of the United States. Washington, DC: USDA Forest Service. Regional compilations by John Nesser, Jerry Freeouf, Wayne Robbie, Thomas M. Collins, Charles B. Goudey, Robert Meurisse, W. Henry McNab, James E. Keys, Jr., Walter E. Russell, Terry Brock, and Greg Nowacki.
  • Cleveland, Cutler J. 2012. Ecoregions of the United States (Bailey). The Encyclopedia of Earth. Ecoregions Collection. of the United States States
  • Bailey, Robert G. 1983. Delineation of ecosystem regions. Environmental Management. 7(4):365-373.
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