Effects of population density and environmental conditions on life-history prevalence in a migratory fish.

ABSTRACT: Individual variation in life-history traits can have important implications for the ability of populations to respond to environmental variability and change. In migratory animals, flexibility in the timing of life-history events, such as juvenile emigration from natal areas, can influence the effects of population density and environmental conditions on habitat use and population dynamics. We evaluated the functional relationships between population density and environmental covariates and the abundance of juveniles expressing different life-history pathways in a migratory fish, Chinook salmon (Oncorhynchus tshawytscha), in the Wenatchee River basin in Washington State, USA. We found that the abundance of younger emigrants from natal streams was best described by an accelerating or

SUBMITTER: Sorel MH 

PROVIDER: S-EPMC10206029 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature