GAP Analysis Predicted Distribution Map

Cascades Frog  Rana cascadae

Species Code: RANCA

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

= 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 Cascades Frog 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.

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

Distribution and Habitat Requirements
The Cascades Frog is commonly found among alpine meadows, small ponds and marshy areas along streams. This frog is generally not found in closed forests.

All of the Cascades and Olympic Peninsula ecoregions were chosen. The Silver Fir, Mountain Hemlock, Subalpine Fir, Grand Fir, Interior Western Hemlock and Alpine/Parkland zones were core. Western Hemlock, Olympic Douglas-fir and Interior Douglas-fir were marginal. Good habitats were lakes, rivers, and riparian areas. All grasslands, shrub savannas, shrublands, tree savannas and open-canopy conifer forests were suitable where appropriate microhabitats existed. This species occurs on rugged terrain in high-elevation zones or occasionally in parts of lower zones near higher zones.

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

Webpage designed by Dave Lester.