00000nam 2200000zi 4500 9.880776 CaOODSP 20221107165849 m go d f cr |n||||||||| 191018t20192019bcca ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-bc Fs70-6/2019-036E-PDF The identification of provisional reference points and harvest rate options for the commercial red sea urchin (Mesocentrotus franciscanus) fishery in British Columbia. Nanaimo, BC : Centre for Science Advice (CSA), Pacific Region, Fisheries and Oceans Canada, 2019. ©2019 1 online resource (12 pages) : colour figures. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian Science Advisory Secretariat, science advisory report, 1919-5087 ; 2019/036 Issued also in French under title: Détermination des points de référence provisoires et des options de taux de récolte pour la pêche commerciale de l’oursin rouge (Mesocentrotus franciscanus) en Colombie-Britannique. Cover title. "July 2019." Includes bibliographical references (pages 9-11). "The Red Sea Urchin (Mesocentrotus franciscanus) (RSU) fishery in British Columbia (BC) is currently managed using an annual harvest rate of 2% (Leus et al. 2014). This harvest rate was derived using a modified Gulland surplus production model; a model used when a stock is data limited and in the early stages of exploitation (Gulland 1971). The RSU fishery is no longer in the early stages of exploitation, commercial harvesting has been occurring for 48 years. To date, almost 25 years of urchin density and size data have been gathered through fishery-independent dive surveys. These data and the exploitation history of the fishery warrant a re-evaluation of the 2% harvest rate through the development of new models. Further, the existing RSU harvest strategy lacks reference points that reflect conservation thresholds required under DFO's Sustainable Fisheries Framework (DFO 2009a)."--Context, page [1]. gccst Fisheries gccst Fisheries resources Canada. Department of Fisheries and Oceans. Pacific Region. Canadian Science Advisory Secretariat. Détermination des points de référence provisoires et des options de taux de récolte pour la pêche commerciale de l’oursin rouge (Mesocentrotus franciscanus) en Colombie-Britannique. (CaOODSP)9.880778 Science advisory report (Canadian Science Advisory Secretariat) 1919-5087 ; 2019/036. (CaOODSP)9.506226 PDF 786 KB https://publications.gc.ca/collections/collection_2019/mpo-dfo/fs70-6/Fs70-6-2019-036-eng.pdf