Assessing the relative importance of local and regional processes on the survival of a threatened salmon population.

ABSTRACT: Research on regulatory mechanisms in biological populations often focuses on environmental covariates. An integrated approach that combines environmental indices with organismal-level information can provide additional insight on regulatory mechanisms. Survival of spring/summer Snake River Chinook salmon (Oncorhynchus tshawytscha) is consistently low whereas some adjacent populations with similar life histories experience greater survival. It is not known if populations with differential survival respond similarly during early marine residence, a critical period in the life history. Ocean collections, genetic stock identification, and otolith analyses were combined to evaluate the growth-mortality and match-mismatch hypotheses during early marine residence of spring/summer Snake River Chin

SUBMITTER: Miller JA 

PROVIDER: S-EPMC4055704 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature