I was wondering if there has been a high
incidence of residualism occurring in the Snake
River Basin within the last 10 years or so. From
what I've read it seems that residualism may occur
under low flow conditions or if hatchery steelhead
smolts are released at a 'larger-than-normal' size.
If residualism is occurring, is it a
significant percentage of the hatchery releases
during certain years, and if it is significant,
what may be triggering it.
I would appreciate any thoughts on this, or
direction toward steelhead field biologists who may
have practical experience with such phenomena.
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