Solid management, natural resilience both key to socke...( when streams run lower than usual. The...)

when streams run lower than usual. Then those deeper-bodied males are more likely to become stranded and, because they stick up higher out of the water, are easier for hungry bears to bite than males in the components of the stock that have average, or even smaller-than-average, body depths.

Egg size, preferred spawning sites, the size of young when hatched are among the many other adaptations that could give advantages depending on conditions.

"We buy insurance for the future by having networks of habitat and not just trying to save the habitat of today's strongest runs," Schindler says. This might necessitate a much finer scale of management than is the current norm, the co-authors say.

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Contact: Sandra Hines
shines@u.washington.edu
206-543-2580
University of Washington
9-May-2003

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