SDE Feature Class
BPG, Southern California, California, salmon, Pacific, anadromous, Biogeographic Population Group, biota, Endangered Species Act, steelhead, ESA
BPGs are divisions within a DPS of contiguous areas with broadly similar physical geography and hydrology. The combinations of these physical characteristics represent differing natural selective regimes for steelhead populations utilizing the individual watersheds. These differing physical characteristics have led to life history and genetic adaptations that can enable the populations to persist in the widely varying and distinctive habitat regimes represented by the BPGs. The purpose of delineating the BPGs is to guide recovery efforts across the Recovery Planning Area to ensure the preservation and recovery of the range of natural diversity of the Recovery Planning Area.
Depiction of Biogeographic Population Groups (BPG) within the Southern California Coast Steelhead Distict Population Segments (DPS).
NOAA Fisheries Southwest Region
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