Bulb Juga – Oregon Conservation Strategy

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Overview

Species Common Name Bulb Juga
Species Scientific Name Juga bulbosa

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.

Special needs

The bulb juga inhabits gravel-boulder riffles in cold, highly-oxygenated water.

Limiting factors

Habitat loss due to dams and fragmentation of waterways pose threats to this species. Water diversions and changes in water quality (e.g., increases in temperature, reductions in oxygen levels) can also have negative effects.

Data gaps

Assess distribution. Determine species-specific habitat requirements.

Conservation actions

Maintain or restore high water quality.