00000nam 2200000za 4500 9.809204 CaOODSP 20221107140556 cr ||||||||||| 150406s2015 oncdb ob f000 0 eng d CaOODSP eng eng fre n-cn--- Fs70-5/2015-054E-PDF Clark, Kirsten Jane, 1963- Overview of discards from Canadian commercial groundfish fisheries in Northwest Atlantic Fisheries Organization (NAFO) divisions 4X5Yb for 2007-2011 [electronic resource] / K.J. Clark, S.C. Hansen, and J. Gale. Aperçu des rejets de poisson de fond liés aux pêches commerciales canadiennes dans les divisions 4X5Yb de l'Organisation des pêches de l'Atlantique Nord-Ouest entre 2007 et 2011 Ottawa : Fisheries and Oceans Canada, 2015. iv, 51 p. : fig., graphs, maps. Canadian Science Advisory Secretariat research document, 1919-5044 ; 2015/054, Maritimes Region "December 2015." Includes bibliographic references (p. 7-8). Discards from Canadian commercial groundfish fisheries in Northwest Atlantic Fisheries Organization Divisions 4X5Yb were characterized for the period 2007-2011. The results were compared to discards calculated for a variety of fisheries conducted in Fisheries and Oceans Canada’s Maritimes Region from 2002-2006. The discards between periods were estimated using the same methodology, which is based on at-sea observations that were scaled to the total catch of each fishery by weight. There may be considerable bias in estimated discards due to issues with the spatial representativeness of the observer coverage, and low levels of observer coverage (ranging from 0 to 11%), particularly for discarded species that are rarely caught. In addition, given the variable and poorly understood mortality of discarded bycatch, this report only calculates total discards and does not adjust for post-release survival or mortality. These discard estimates are only intended for making broad comparisons. Despite some limitations, this type of broad comparison of discards across fisheries and years can be helpful in identifying potential conservation concerns, as well as providing a basis for triage by resource managers. gccst Fisheries gccst Waste gccst Fishing area gccst Fisheries management Canada. Department of Fisheries and Oceans. Canadian Science Advisory Secretariat. Research document (Canadian Science Advisory Secretariat) 1919-5044 ; 2015/054, Maritimes Region (CaOODSP)9.507396 PDF 1.17 MB https://publications.gc.ca/collections/collection_2016/mpo-dfo/Fs70-5-2015-054-eng.pdf