Spotted Bat – Oregon Conservation Strategy

Overview

Species Common Name Spotted Bat
Species Scientific Name Euderma maculatum
Federal Listing Status Species of Concern
State Listing Status Sensitive

Ecoregions

Blue Mountains

Located in NE Oregon, the Blue Mountains ecoregion is the largest ecoregion in the state. It provides a diverse complex of mountain ranges, valleys, and plateaus that extend beyond Oregon into the states of Idaho and Washington.

Columbia Plateau

The Columbia Plateau ecoregion was shaped by cataclysmic floods and large deposits of wind-borne silt and sand earlier in its geological history. It is dominated by a rolling landscape of arid lowlands dissected by several important rivers, and extends from the eastern slopes of the Cascades Mountains, south and east from the Columbia River to the Blue Mountains.

East Cascades

The East Cascade ecoregion extends from the Cascade Mountains’ summit east to the warmer, drier high desert and down the length of the state. This ecoregion varies dramatically from its cool, moist border with the West Cascades ecoregion to its dry eastern border, where it meets sagebrush desert landscapes.

Klamath Mountains

The Klamath Mountains ecoregion covers much of southwestern Oregon, including the Umpqua Mountains, Siskiyou Mountains, and interior valleys and foothills between these and the Cascade Range. The Rogue watershed has the largest population of any coastal watershed in Oregon (Jackson County, Josephine County, and a portion of Curry County). Several popular and scenic rivers run …

Northern Basin and Range

The Northern Basin and Range ecoregion covers the very large southeastern portion of the state, from Burns south to the Nevada border and from the Christmas Valley east to Idaho. It is largely a high elevation desert-like area dominated by sagebrush communities and habitats.

Special needs

Spotted bats use crevices in cliffs, caves, and canyon walls for day and night roosting. They also roost in trees adjacent to meadows at night. They typically forage in meadows, shrub-steppe, or along riparian corridors and water sources.

Limiting factors

This species is naturally rare and has low reproductive rates. Loss of shrub-steppe habitat may further reduce abundance. Like other bats, this species is sensitive to disturbance at roosts.

Data gaps

Assess distribution, abundance, and trends. Improve understanding of basic ecology and habitat associations.

Conservation actions

Maintain open-water sources in desert landscapes. Manage rock features, such as cliffs, to avoid conflict with recreational use and rock removal. Maintain and restore native shrub-steppe habitat.