An integrated model of seasonal changes in stock composition and abundance with an application to Chinook salmon.

ABSTRACT: Population-specific spatial and temporal distribution data are necessary to identify mechanisms regulating abundance and to manage anthropogenic impacts. However the distributions of highly migratory species are often difficult to resolve, particularly when multiple populations' movements overlap. Here we present an integrated model to estimate spatially-stratified, seasonal trends in abundance and population composition, using data from extensive genetic sampling of commercial and recreational Chinook salmon (Oncorhynchus tshawytscha) fisheries in southern British Columbia. We use the model to estimate seasonal changes in population-specific standardized catch per unit effort (a proxy for abundance) across six marine regions, while accounting for annual variability in sampling effo

SUBMITTER: Freshwater C 

PROVIDER: S-EPMC8063875 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature