Northwest Fisheries Science Center

Monster Seminar JAM

Event Information

Monster Seminar JAM - Reducing seabird bycatch in Alaska longline fisheries, from GLMs and GAMs to management and policy

Presentator(s):
Dr. Loveday L. Conquest, School of Aquatic & Fishery Sciences, Quantitative Ecology & Resource Management, University of Washington

More Information:
Abstract
"Bycatch" denotes the accidental mortality of seabirds from commercial fishing activities. Thus, Alaskan commercial fisheries are concerned with incidental mortality of endangered seabirds. A study comparing bycatch reduction technologies was carried out in Alaska's Bering Sea. The three technologies were: integrated weight longlines (IW), IW with paired streamer lines (IWPS), and unweighted longlines with paired streamer lines (UWPS). Generalized additive models (GAMs) were used to evaluate treatment effects and other factors influencing catch rates. Seabird bycatch rates were reduced by all mitigation methods; the relative effectiveness varied by foraging guild. A management practice that adds weighted lines to the paired streamer lines already in use can help seabird conservation in longline fisheries, while not appreciably reducing fish catch.

Location:
NWFSC  Map to NWFSC
2725 Montlake Blvd. E.
Seattle,  WA  98112

Date and Time:
Thursday, February 18, 2010, 11:00 am - 12:00 pm

Contact Person(s):
Blake Feist
206-860-3408
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Diane Tierney-Jamieson
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