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ID: 2286

Pinnix, B. 2016. Abundance of naturally produced juvenile chinook salmon. Trinity River Restoration Program (TRRP) Performance Measure. TRRP, Weaverville, California. Available:

"Results: Annual population estimates of juvenile Chinook Salmon have exceeded the 2007 estimate in all years through 2014 (Figure 1). However, discontinuities in the increasing trend of abundance occurred in 2011 and 2013-14. It is possible that spawning population size or environmental conditions during egg incubation had an effect on juvenile Chinook Salmon abundance, but analyses to determine cause and effect have not been done. Future analyses relating the size of the spawning population to the number of juveniles produced, as well as habitat availability and temperature regimes will be conducted to assess factors that influence juvenile population sizes."

First Posted: 2016-05-10 01:38:06

Post Updated: 2016-05-10 01:38:06