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TitleOregon coastal coho assessment: Part 1: Synthesis of the coastal coho ESU assessment -- including: 1. Viability analysis; 2. Population bottlenecks; 3. Evaluation of conservation efforts; 4. Monitoring; 5. Current threats to ESU viability; 6. Adaptive
Publication TypeReport
Year of Publication2005
AuthorsNicholas, Jay, Bruce McIntosh, Ed Bowles, Oregon. Watershed Enhancement Board, and Oregon. Dept. of Fish and Wildlife
Corporate AuthorsState of Oregon,
Pagination69 p.
Call NumberDigital Open Access.
KeywordsAlsea River, Beaver Creek, Coho salmon = Oncorhynchus kisutch, Coos Bay, Coquille Bay, ecosystem health, ecosystem modeling, Floras Lake, habitat restoration, hatcheries, hatchery salmonids, historical, human impacts, introduced species, Lower Umpqua River, Middle Umpqua River, Necanicum River, Nehalem River, Nestucca River, North Umpqua River, reproductive behavior, Salmon River, Siletz River, Siltcoos Lake, Siuslaw River, Sixes River, South Umpqua River, straying, Tahkenitch Lake, Tenmile Creek, Tillamook Bay, water quality, wild salmonids, Yaquina River
Notes"May 6, 2005" -- date from front cover. This report is important because it identifies winter habitat for coho ("stream complexity") as the most important limiting factor for the Oregon Coast Evolutionary Significant Unit coho recovery and production. Other limiting factors include hatchery impacts, water quantity, water quality, and exotic fish species. Identifies viable populations. Distinguishes between populations that can persist when marine and freshwater conditions are unfavorable and populations dependent on reproductive contributions from strays from other basins. Preliminary analysis "suggests that winter habitat (i.e. stream complexity) is a higher priority for restoring coho populations across the ESU than water quality." (p.20)