Overlap of North Pacific albatrosses with the U.S. west coastgroundfish and shrimp fisheries Public Deposited

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  • tWe used a combination of seabird data (both fishery-dependent and fishery-independent) and fishing-effort data to evaluate the relative fisheries risk of five west coast groundfish fisheries and oneshrimp fishery to black-footed (Phoebastria nigripes), short-tailed (P. albatrus) and Laysan albatrosses(P. immutabilis). To assess risk, an overlap index was derived as the product of total fishing effort andat-sea survey density of black-footed albatross. This index was used as the primary tool to estimate over-lap with the endangered, relatively rare short-tailed albatross, which show similar habitat utilizationfrom satellite telemetry tracks. Telemetry data indicate Laysan albatross primarily occur offshore beyondobserved fishing effort. Black-footed and short-tailed albatross-fishery overlap was highest at the shelf-break (201–1000 m) north of 36◦N. Overlap and reported albatross mortality indicate that the sablefish(Anoplopoma fimbria) longline and Pacific hake (Merluccius productus) catcher-processor fisheries posethe greatest risk to these species; the near-shore rockfish (Seabastes spp.) longline, pink shrimp (Pandalusjordani) trawl, California halibut (Paralichthys californicus) trawl, and non-hake groundfish trawl fisheriespose relatively little risk. Implementing proven seabird bycatch-reduction measures will likely minimizealbatross mortality in the highest-risk fishery, sablefish longline.
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  • Guy, T., Geernaert, T., Henry, R., Hester, M., Hyrenbach, K., Jahncke, J., . . . Deguchi, T. (2013). Overlap of north pacific albatrosses with the US west coast groundfish and shrimp fisheries. Fisheries Research, 147, 222-234. doi:10.1016/j.fishres.2013.06.009
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  • description.provenance : Approved for entry into archive by Deborah Campbell(deborah.campbell@oregonstate.edu) on 2013-11-12T17:07:08Z (GMT) No. of bitstreams: 1 SuryanRMHMSCOverlapNorthPacific.pdf: 2794931 bytes, checksum: 06bedb5a75f2b5ef37cc04e5d57282c1 (MD5)
  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2013-11-12T17:06:16Z No. of bitstreams: 1 SuryanRMHMSCOverlapNorthPacific.pdf: 2794931 bytes, checksum: 06bedb5a75f2b5ef37cc04e5d57282c1 (MD5)
  • description.provenance : Made available in DSpace on 2013-11-12T17:07:08Z (GMT). No. of bitstreams: 1 SuryanRMHMSCOverlapNorthPacific.pdf: 2794931 bytes, checksum: 06bedb5a75f2b5ef37cc04e5d57282c1 (MD5) Previous issue date: 2013-10

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