GAP Analysis Predicted Distribution Map

Metadata (Data about data or how the map was made)

Legend:
= Core Habitat
= Marginal Habitat

Predicted Distribution
Amphibians do not migrate as some birds and mammals, so the colored areas depict the predicted range for the Great Basin Spadefoot year-round. The habitats were identified using 1991 satellite imagery, other datasets and experts throughout the state, as part of the Washington Gap Analysis Project.

Distribution and Habitat Requirements
This toad occurs in most of the Columbia Basin (Leonard et al., 1993) utilizing a variety of permanent and temporary waters, such as pothole ponds, irrigation waters and roadside ditches. This species spends most of its life underground, preferring sandy habitats. The Great Basin spadefoot toad seems to prefer pools with bare mud or grasses and forbs, and is not generally found in or alongside large lakes and rivers or wetlands where fish are present (John Hall, pers. comm.).

Models
The Columbia Basin, Blue Mountains, and Northeast Corner ecoregions were selected. All zones within the Columbia Basin region were core. The Ponderosa Pine zone in the Northwest and Blue Mountains and the Oak zone were marginal.

Rivers and riparian areas were good habitats, but large areas of open water were excluded. All non-forested, low-density development, irrigated row crops and orchards and non-irrigated conservation reserve areas were considered suitable if appropriate microhabitats existed.

Other maps & Information: NatureMapping observations throughout the year Links to pictures and other information about this species

Translated from the Washington Gap Analysis Amphibians and Reptiles Volume by Karen Dvornich

Webpage designed by Dave Lester.