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Published byLinda Harper Modified over 9 years ago
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Downstream Migrations to Consider juvenile/smolt Chinook (February-June) YOY coho and steelhead (February- July) Yearling coho and steelhead (November- December) ------------ Yearling fall or spring upstream migrations?
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Hanson Ponds Migration Destination for Rearing Or Dead End/Population Sink
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Major Factors to Consider Access Habitat suitability for particular life history stages Predation Rates Question
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Habitat Suitability Geomorphology Season and duration of inundation Flow rate of surface and subsurface water Water Quality Cover (All are interconnected)
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Largemouth Bass (YOY) ~ 5650 Largemouth (>75mm) - 94 Bluegill - 43 Carp - 11 Redear - 6 Golden Shiner – 4 Brown Bullhead - 1 Native Species: Sacramento Sucker - 3 Hardhead - 1 Blackfish - 1 Lamprey - 1 Introduced species: Electro-Fishing Results, Hopkins Pond
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1 Hypothetical Analysis 100,000 square meters optimum coho summer rearing habitat in Dry Creek - 170,000 parr (1.7 fish/m2) + 30 percent will serve as winter rearing habitat- 25,500 smolts (1 fish/m2) Fate of 144,500 coho parr migrating downstream for winter habitat?
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“We have the knowledge and the know how to use biological criteria…lets use them” Karr and Chu, 1997 Biological Monitoring and Assessment: Using Multimetric Indexes Effectively
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