South-Central/Southern California Coast Steelhead Recovery Planning Domain. 5-Year Review: Summary and Evaluation of South-Central California Coast Steelhead Distinct Population Segment.

摘要

Many West Coast salmon and steelhead (Oncorhynchus spp.) stocks have declined substantially from their historic numbers and now are at a fraction of their historical abundance. There are multiple factors that contribute to these declines, including, particularly the loss of freshwater and estuarine habitat, periodic poor ocean conditions, and a variety of land-use practices which have impacted many watershed processes. These factors collectively led to the National Marine Fisheries Service (NMFS) listing of south-central California steelhead as threatened under the Federal Endangered Species Act (ESA).