Jes Hathaway is the editor in chief of National Fisherman magazine and NationalFisherman.com.
Written by Jes Hathaway
Tuesday, 01 April 2014
As most of our readers know, last year was an epic one for Alaska's salmon fleets. This year, as the opening story in our May issue's Around the Coasts section describes, the West Coast is looking particularly strong, especially the Columbia River.
According to National Geographic, a new report from the Proceedings of the National Academy of Sciences is sounding the alarm about these high returns and calling it "an uncommon case of too many fish in the sea."
The report points to resource competition between pink salmon and other marine life, focusing on Bering Sea and Aleutian Islands colonies of seabirds. Noting that pink salmon has a two-year life cycle, alternating between high and low returns, the researchers found that in the salmon's down years, the breeding success of seabirds like kittiwakes and puffins is much higher.
Actually, the National Geographic article stated the reverse — that in the pinks' abundant years, seabirds have less success breeding.
So the question is: Which came first? The puffin or the fish eggs?
Let's follow the logic:
First, seabirds and pink salmon are in competition for the same sources of food. Second, ostensibly the pinks' numbers are rising because rising ocean temperatures have increased their food supply. So doesn't it stand to reason that in the off years of pink salmon returns, the seabirds are also faring better than they once were?
How would the salmon exclusively be benefiting from the increased supply of zooplankton, squid and Atka mackerel?
The researchers admit that "very little is known about how open ocean ecosystems work." This is another step toward understanding more about the wild BSAI ecosystem. We may indeed have to rethink the way we manage salmon hatcheries in Alaska. But the precautionary principle goes both ways. Just because pinks outcompete seabirds every other year does not mean seabird populations are unsustainably low.
In the meantime, we'll celebrate the success of pinks, perhaps over supper.
Photo: Southeast Alaska pinks packed for processing; Jessica Hathaway
National Fisherman Live: 3/10/15
In this episode, Online Editor Leslie Taylor talks with Mike McLouglin, vice president of Dunlop Industrial and Protective Footwear.
National Fisherman Live: 2/24/15
In this episode:
March date set for disaster aid dispersal
Oregon LNG project could disrupt fishing
NOAA tweaks gear marking requirement
N.C. launches first commercial/recreational dock
Spiny lobster traps limits not well received
The Gulf of Maine Research Institute is partnering with restaurants throughout the region for an Out of the Blue promotion of cape shark, also known as dogfish. Starting Friday, July 3 and running until Sunday, July 12, cape shark will be available at each participating restaurant during the 10-day event. Cape shark is abundant and well deserving of a wider market.
As a joint Gulf of Mexico states seafood marketing effort sails into the sunset, the program’s Marketing Director has left for a job in the private seafood sector. Joanne McNeely Zaritsky, the former Marketing Director of the Gulf State Marketing Coalition, has joined St. Petersburg, FL based domestic seafood processor Captain’s Fine Foods as its new business development director to promote its USA shrimp product line.