Sensitivity to climate change
The Cascades Needlefly is a rare species limited to very few sites in Washington, Oregon, Idaho, and Montana. Critical habitat of the nymphs are seeps, springs, and spring-fed streams; the genus Megaleuctra is dependent on coldwater habitats that do not dry out, as well as high water quality. The sensitivity of this species is likely closely tied to their specialized habitat requirements. Changes in flow patterns due to drought or changing patterns of precipitation, changes in water temperature, and decreased water quality are all likely to increase the sensitivity of the species. Habitat fragmentation and nearby development also alter the quality and availability of suitable habitat.
Exposure to climate change
- Increased water temperatures
- Changes in precipitation and/or drought
- Altered flow regimes