Differential impacts of freshwater and marine covariates on wild and hatchery Chinook salmon marine survival.

ABSTRACT: Large-scale atmospheric conditions in the Northeast Pacific Ocean affect both the freshwater environment in the Columbia River Basin and marine conditions along the coasts of Oregon, Washington, and British Columbia, resulting in correlated conditions in the two environments. For migrating species, such as salmonids that move through multiple habitats, these correlations can amplify the impact of good or poor physical conditions on growth and survival, as movements among habitats may not alleviate effects of anomalous conditions. Unfortunately, identifying the mechanistic drivers of salmon survival in space and time is hindered by these cross-habitat correlations. To address this issue, we modeled the marine survival of Snake River spring/summer Chinook salmon with multiple indices of the

SUBMITTER: Chasco B 

PROVIDER: S-EPMC7872236 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature