MHW and HAB events of 2014-2016 resulted in multiple fishery closures along the west coast ; disparate impacts observed between small and large vessels with greatest impacts on small vessel revenue and fishery participation; impacts highest for ports in the N-CC and least for fishing communities with diverse livelihoods and harvest portfolios. In the EBS, GOA and N-CC, declines in fish biomass and shifts in distribution were four times higher and greater during MHWs than that of general warming over the same period. Pelagic fish showed largest decrease in biomass , as did Sockeye salmon and California anchovy; increased risk to hatcheries and low-lying pond systems from severe storms. Extreme heat is associated with reduced productivity of aquaculture species.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report