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Northeast Fisheries Science Center Reference Document 13-13

Estimates of Cetacean and Pinniped Bycatch during 2010 and 2011 in the New England Sink Gillnet Fishery, Mid-Atlantic Gillnet Fishery, and Two NMFS Gillnet Experiments, 2nd Edition

by Christopher D. Orphanides
NOAA Fisheries, Northeast Fisheries Science Center, 28 Tarzwell Drive, Narragansett, RI 02882

Web version posted September 27, 2013

Citation: Orphanides CD. 2013. Estimates of cetacean and pinniped bycatch during 2010 and 2011 in the New England sink gillnet fishery, Mid-Atlantic gillnet fishery, and two NMFS gillnet experiments. US Dept Commer, Northeast Fish Sci Cent Ref Doc. 13-13; 37 p. Available from: National Marine Fisheries Service, 166 Water Street, Woods Hole, MA 02543-1026, or online at

Information Quality Act Compliance: In accordance with section 515 of Public Law 106-554, the Northeast Fisheries Science Center completed both technical and policy reviews for this report. These predissemination reviews are on file at the NEFSC Editorial Office.

Acrobat Download complete PDF of corrected 2nd edition

Please note: The 1st edition of this report, released on August 28, 2013, contained errors in the data used to weight New England bycatch rates when accounting for ASM groundfish coverage. These errors affected many New England bycatch estimates, CVs, and CIs, and these estimates have been recalculated. The Abstract, Results, and Discussion have been revised accordingly. In developing this second edition, the paper also was closely reviewed for any additional corrections or clarifications. This resulted in a slight change in the description of the bootstrap methodology in the Methods, a minor change in Table 1 to the prorated metric tons and observer coverage for the Fall South of Cape Cod Port Group, and application of a consistent approach to rounding intermediate bycatch rates (to three decimal places) when calculating the 2010 Mid-Atlantic bycatch estimates, which resulted in minor (rounding error) changes in those estimates (Table 11).

PDF of 1st edition from August 28, 2013

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