Saving Seafood

Warming conditions are making northern Bering Sea more friendly for pink salmon

September 22, 2020 — Pink salmon, the most plentiful and cheapest of Alaska’s five salmon species, are finding more hospitable habitat in the warming northern Bering Sea, a new study finds.

There is a clear link between warming temperatures at Nome and better juvenile salmon productivity in rivers that flow into the northern Bering Sea, said the study, published in the journal Deep Sea Research Part II: Topical Studies in Oceanography.

Pink salmon, a species more associated with waters off Alaska’s southern coast, appear to be among those boreal species working their way into more northern waters in response to climate change.

Pink salmon’s short life cycle makes their population more adaptable to these changes in environmental conditions, according to the study. Other salmon species spend up to seven years at sea before returning to freshwater to spawn, but pink salmon have a total life cycle of only two years — counting their time in both saltwater and freshwater — and that relatively quick turnaround gives more chances for succeeding generations to shift their migration patterns.

“Pink salmon are definitely good at straying,” said lead author Ed Farley of the National Oceanic and Atmospheric Administration. “They definitely want to go seek out other habitat.”

Read the full story at Arctic Today

Pink salmon could prosper in warmer Arctic rivers and streams, study says

September 9, 2020 — A new study has found that global warming could produce higher numbers of pink salmon in the Arctic by making rivers and streams more hospitable for spawning.

The analysis was published by U.S. and Canadian scientists in the journal Deep Sea Research Part II, Alaska’s Energy Desk reported Monday.

The findings bolster reports by Alaska subsistence fishermen that pink salmon numbers have increased as the Arctic warms at more than double the rate of the rest of the globe.

“Maybe in the past, they’d see a few adult pink salmon here and there every few years. Now they’re seeing them every year,” said Ed Farley, a federal fisheries scientist at the Auke Bay Laboratories in Juneau.

Read the full story at the Anchorage Daily News

Pink Salmon May Benefit as Pacific Arctic Warms

September 1, 2020 — The following was released by NOAA Fisheries:

The Pacific Arctic is undergoing a rapid transformation. As temperatures rise and sea ice melts, some species will do better than others. A new study suggests that pink salmon may be one of those species.

“Our results suggest that warming is both increasing freshwater habitat and improving early marine survival of pink salmon in the northern Bering Sea,” said Ed Farley, NOAA Fisheries biologist at the Alaska Fisheries Science Center, who led the study.

The study provides insight into the response of pink salmon to climate change. The findings are valuable information for commercial and subsistence fisheries, and fishing communities, preparing for future changes.

“Subsistence harvesters would like to know what foods may be available to them now and into the future,” Farley said.

“The importance of fish in Arctic subsistence economies cannot be overstated; they are some of the most commonly eaten foods,” said coauthor Todd Sformo, biologist at the North Slope Borough Department of Wildlife Management.

“In the past on the North Slope, salmon have been used for dog food and even considered nuisance fish when interfering with preferred species such as aanaakliq or broad whitefish in the inland rivers. Recently, there seems to be a change both qualitatively and quantitatively in the use of salmon as a main dish and for smoking.

“Participating in this study allowed me to present a subsistence perspective, learn how fellow researchers measure production dynamics, and better understand how pink salmon are responding to climate warming in the northern Bering Sea. While this research is further south than the waters surrounding the North Slope, it is a beginning of our attempt to account for potential change in subsistence fishing.”

Read the full release here