Idaho Batholith ecoregion

The Idaho Batholith ecoregion is a Level III ecoregion designated by the United States Environmental Protection Agency (EPA) in the U.S. states of Idaho and Montana. It is contained within the following biomes (or major habitat types) designated by the World Wild Fund for Nature (WWF): Temperate coniferous forests; Temperate grasslands, savannas, and shrublands; and Deserts and xeric shrublands.

The Idaho batholith ecoregion is bordered on the north by the Northern Rockies, on the east by the Middle Rockies, on the south by the Snake River Plain, on the west by the Blue Mountains, and partially on the northwest by the Columbia Plateau. It has been subdivided into eleven Level IV ecoregions in Idaho and Montana. As defined by the EPA, ecoregions are, "Areas of similarity regarding patterns in the mosaic of abiotic and biotic, aquatic and terrestrial ecosystem components, including geology, physiography, vegetation, climate, soils, hydrology, land use, and wildlife, with humans being considered as part of the biota."

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