Publisher's Synopsis
Excerpt from Draft Recovery Plan for the Shasta Crayfish (Pacifasticus Fortis)
Habitat Requirements and Limiting Factors: Shasta crayfish primarily live in cool, clear, spring-fed headwaters that are characterized by clean volcanic cobbles and boulders on top of sand or gravel. The volcanic cobble and boulders are essential habitat components because they provide protective cover for the crayfish. The main threats to Shasta crayfish include: major land reclamation.
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