00000nam 2200000za 4500 9.805027 CaOODSP 20221107135542 cr ||||||||||| 150406s1999 oncdb o f000 0 eng d CaOODSP eng eng fre n-cn--- Fs70-1/1999-63E-PDF Melvin, Gary Donald, 1951- A proposed acoustic survey design for 4WX herring spawning components [electronic resource] / by G.D. Melvin and M.J. Power. Ottawa : Fisheries and Oceans Canada, 1999. 15 p. : fig., maps, tables. Canadian Stock Assessment Secretariat research document, 1480-4883 ; 99/63 Includes bibliographical references (p. 7). Over the past several years the 4WX herring stock complex has been assessed using input from acoustic based surveys and fishing excursions. Unfortunately, the data have been collected in a somewhat ad hoc manner. The results, while providing valuable information on the abundance of herring on specific spawning grounds, are not comparable from year to year due to restricted coverage and only provide a minimum biomass of the fish observed on the day surveyed. The purpose of this report is to describe a survey approach which will incorporate standard acoustic protocol (i.e. randomly selected transects) and pre-defined strata into the industry surveys. In this way the area covered will be consistent from survey to survey, year to year and will allow for inter-annual comparison of the data and its possible use as an index of abundance sometime in the future (5-7 years). gccst Fisheries resources gccst Salt water fish gccst Fishing area gccst Fisheries management Power, M. J. (Mike J.) Canada. Department of Fisheries and Oceans. Canada. Canadian Stock Assessment Secretariat. Canadian Stock Assessment Secretariat research document, 1480-4883 ; 99/63 (CaOODSP)9.507740 PDF 1.29 MB https://publications.gc.ca/collections/collection_2015/mpo-dfo/Fs70-1-1999-63-eng.pdf