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Map: Bailey Ecoregions of the Continents Ecoregions of the Continents characterizes global potential natural vegetation at approximately 1/2-degree resolution. The dataset is based on a Russian vegetation map (Gerasimov, 1964) which was updated by the US Fish and Wildlife Service (Robert C. Bailey), however the geographic projection was unknown. This version was reprojected to geodetic coordinates at the World Conservation Monitoring Center, England by resampling from the undocumented projection to geodetic coordinates using coastal control points. This dataset originates from the Global Ecosystems Database (GED) project which began in 1990 as an Interagency project between the National Geophysical Data Center (NGDC) of the U.S. National Oceanic and Atmospheric Administration (NOAA), and the U.S. Environmental Protection Agency's (EPA) Environmental Research Laboratory in Corvallis, Oregon (ERL-C).

Layers: Continents This layer is an ESRI reference layer that contains the seven continents of the world. More Information Ecoregion Divisions by Robert C. Bailey The intermediate scale Ecoregion classification used in the Bailey Ecoregions of the Continents dataset. There are roughly thirty ecoregion divisions (for example: Hot Continental, Subtropical, Tundra, Mediterranean, ...). More Information Ecoregion Domain by Robert C. Bailey The most general Ecoregion classification used in the Bailey Ecoregions of the Continents dataset. There are four domains: Dry, Humid Temperate, Humid Tropical and Polar. More Information Ecoregion Province by Robert C. Bailey The most detailed Ecoregion classification used in the Bailey Ecoregions of the Continents dataset. There are over sixty Ecoregion Provinces (for example: Eastern Oceanic Mixed Monsoon Forest, Moderate Continental Small-Leafed Forest, Semi-deserts of Continental Climate,...). More Information