Research Document - 2012/014
Critical review and analysis of existing risk-based techniques for determining sustainable mortality levels of bycatch species
By S.A. Pardo, A.B. Cooper, and N.K. Dulvy
Abstract
This document describes available techniques for the assessment of the status of bycatch species. For all the approaches discussed, we provide data requirements, caveats, assumptions, recommendations, and comments on their accuracy and precision, when available. First, we review the direct (i.e., based on catch data) and indirect methods (i.e., based on meta-analytical models) for estimating natural mortality that are applicable to bycatch species. Second, we describe how natural mortality estimates and other demographic methods can be used to estimate sustainable fishing mortality rates, and other reference points.
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