Salmon runs are notoriously variable: strong one year, and weak the next. New research shows that the same may be true from one century to the next.
Scientists in the past 20 years have recognized that salmon stocks vary not only year to year, but also on decades-long time cycles. One example is the 30-year to 80-year booms and busts in salmon runs in Alaska and on the West Coast driven by the climate pattern known as the Pacific Decadal Oscillation.
Now work led by University of Washington researchers reveals those decadal cycles may overlay even more important, centuries-long conditions, or regimes, that influence fish productivity. Cycles lasting up to 200 years were found while examining 500-year records of salmon abundance in Southwest Alaska. Natural variations in the abundance of spawning salmon are as large those due to human harvest.
Read the full story at Alaska Business Monthly>>
National Fisherman Live: 1/13/15
In this episode:
Council hosts public hearing on Cashes Ledge
Report assesses Chesapeake water, fisheries
Warmer waters shake up Jersey fishing
North Pacific observer program altered for 2015
Woman aims to crowdsource lobstering career
National Fisherman Live: 12/30/14
In this episode, Michael Crowley, National Fisherman's Boats & Gear editor, interviews Chelsea Woodward, an engineer working with the NIOSH Alaska Pacific Office to design static guards for main drum winches used in the side trawl fishery in the Gulf of Mexico.
The Alaska Seafood Marketing Institute is still seeking public review and comment on the Alaska Responsible Fisheries Management Conformance Criteria (Version 1.2, September 2011). The public review and comment period, which opened on Dec. 3, 2014, runs through Monday, Feb. 3.
NOAA, in consultation with the Department of the Interior, has appointed 10 new members to the Marine Protected Areas Federal Advisory Committee. The 20-member committee is composed of individuals with diverse backgrounds and experience who advise the departments of commerce and the interior on ways to strengthen and connect the nation's MPA programs. The new members join the 10 continuing members appointed in 2012.