00000nam 2200000zi 4500 9.891299 CaOODSP 20221107172837 m o d f cr mn||||||||| 200909t20202020mbcab ob f000 0 eng d 9780660359830 CaOODSP eng rda CaOODSP eng eng fre n-cn-mb Fs97-6/3404E-PDF Enders, E. C. (Eva Claudia) author. Protocol for the pelagic fish trawl survey of Lake Winnipeg / Eva C. Enders and Chelsey E. Lumb. Winnipeg, MB : Fisheries and Oceans Canada = Pêches et océans Canada, 2020. ©2020. 1 online resource (ix, 28 pages) : illustrations (chiefly colour), maps (some colour). text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian technical report of fisheries and aquatic sciences, 1488-5379 ; 3404 Includes bibliographical references (pages 14-16). "During recent decades, Lake Winnipeg has experienced substantial changes in environmental conditions and the associated fish community. The effects of eutrophication, flow regulation, fishing pressure, climate change, and the occurrence of cyanobacteria and various aquatic invasive species, in particular Common Carp (Cyprinus carpio), Rainbow Smelt (Osmerus mordax), Spiny Water Flea (Bythotrephes longimanus), and Zebra Mussel (Dreissena polymorpha), significantly impacted the native fish community. Since 2002, a survey of pelagic forage fish species and early life stages of large-bodied fish species has been conducted from the M.V. Namao in the pelagic zone of Lake Winnipeg, Manitoba, Canada along a network of fixed survey stations. Fish are caught during spring, summer, and fall from the south basin, Narrows, and north basin of Lake Winnipeg. The catches are then further analysed in the laboratory to generate catch composition, species length, and biomass data"--Abstract, page viii. Includes abstracts in English and French. Fish surveys Manitoba Winnipeg, Lake Methodology. Trawls and trawling Manitoba Winnipeg, Lake. Inventaires ichtyologiques Manitoba Winnipeg, Lac Méthodologie. Chalutage Manitoba Winnipeg, Lac. Canada. Department of Fisheries and Oceans, issuing body. Freshwater Institute (Canada), issuing body. Canadian technical report of fisheries and aquatic sciences, 1488-5379 ; 3404. (CaOODSP)9.504449 PDF 1.20 MB https://publications.gc.ca/collections/collection_2020/mpo-dfo/Fs97-6-3404-eng.pdf