Why is the Sacramento River salmon run collapsing?



  1. 0 Votes

    There are a number of possible reasons although one main culprit has not been found.  Researchers expected a much higher return of fish and are confused by this low return.  Some reasons include loss of freshwater habitat in the delta, weaker salmon, more variable ocean conditions (warmer oceans, less food supply) and drought in California.  There are fears that the population has dropped below regeneration levels and even with help, will not recover.

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