Functional group conversion factors in support of ecosystem analyses in the Newfoundland and Labrador region / Munro, H., Trueman, S., Novaczek, E., and Wheeland, L. : Fs70-5/2026-030E-PDF

"Comparative fishing (i.e., direct side by side comparison between old and new vessels) occurred from fall 2021 through fall 2023 as the Newfoundland and Labrador Region of Fisheries and Oceans Canada transitioned from the Canadian Coast Guard Ship (CCGS) Alfred Needler and CCGS Teleost to the CCGS John Cabot and CCGS Capt. Jacques Cartier for its multispecies surveys. Conversion factors have been estimated for many species, but data are not sufficient to estimate conversions for all taxa. To support ecosystem-based analyses, conversions are estimated here with fish and commercial shellfish species grouped at the functional group level (i.e., groupings of species based on size and general feeding habits), with conversions estimated for total catch weight and total catch numbers. Results vary across vessels, areas, and between functional groups. Conversions are intended to be applied to the vessel, season, and area for which they were derived, and are to be used at the grouped level only"--Abstract, page iv.

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