Snake River sockeye and Chinook salmon in a changing climate: Implications for upstream migration survival during recent extreme and future climates.

ABSTRACT: In 2015, the Pacific marine heat wave, low river flows, and record high water temperatures in the Columbia River Basin contributed to a near-complete failure of the adult migration of endangered Snake River sockeye salmon (Oncorhynchus nerka, NOAA Fisheries 2016). These extreme weather events may become the new normal due to anthropogenic climate change, with catastrophic consequences for endangered species. Existing anthropogenic pressures may amplify vulnerability to climate change, but these potential synergies have rarely been quantified. We examined factors affecting survival of endangered sockeye (Oncorhynchus nerka) and threatened Chinook salmon (O. tshawytscha) as they migrated upstream through eight dams and reservoirs to spawning areas in the Snake River Basin. Our extensive data

SUBMITTER: Crozier LG 

PROVIDER: S-EPMC7526937 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature