00000cam 2200000zi 4500 9.960058 CaOODSP 20260219141147 m o d f cr mn||||||||| 260217t19941994bccab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc x7x9 Fs97-4/2265E-PDF Fs97-4/2265E Nagtegaal, D. A. (Dick A.) author. A preliminary report on the chinook productivity study conducted on the Cowichan River during 1990 and 1991 / by D.A. Nagtegaal, J. Candy and B. Riddell. Nanaimo, British Columbia : Biological Sciences Branch, Department of Fisheries and Oceans, Pacific Biological Station, 1994. ©1994 1 online resource (vii, 71 pages) : illustrations, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; 2265 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (pages 15-16). "In 1990 and 1991, the Biological Sciences Branch, Pacific Biological Station, conducted a study of chinook salmon (Oncorhynchus tshawytscha) productivity in the Cowichan River. Major components of this study include: i) enumeration of spawners, ii) estimation of native food fish catch, iii) recording hatchery broodstock removals, iv) biological sampling and coded-wire tag (CWT) data collection. In 1991, a mark-recapture study was also conducted to augment the fence count. Total returns of adult chinook to the Cowichan River were estimated to be 5,094 in 1990 and 5,065 in 1991. These were considered to be minimum estimates since in both years the enumeration fence was washed out due to high water levels prior to the end of the run. Fishery Officers estimated adult chinook returns in 1990 to be 5,300 and in 1991 to be 10,000. In addition, a water management plan was executed by the Department of Fisheries and Oceans, Fisheries Branch, in conjunction with the Ministry of Environment and Parks and Fletcher Challenge Canada, Ltd., Pulp and Paper Division in Crofton"--Abstract, page vi. Includes abstracts in English and French. Chinook salmon British Columbia Cowichan River. Escapement (Fisheries) British Columbia Cowichan River. Chinook salmon Counting British Columbia Cowichan River. Chinook salmon Marking British Columbia Cowichan River. Hatchery fishes British Columbia Cowichan River. Saumon quinnat Colombie-Britannique Cowichan, Fleuve. Échappée (Pêches) Colombie-Britannique Cowichan, Fleuve. Saumon quinnat Comptage Colombie-Britannique Cowichan, Fleuve. Saumon quinnat Marquage Colombie-Britannique Cowichan, Fleuve. Poissons d'élevage Colombie-Britannique Cowichan, Fleuve. Canada. Department of Fisheries and Oceans, issuing body. Pacific Biological Station (1972- ), issuing body. Canadian manuscript report of fisheries and aquatic sciences ; 2265. (CaOODSP)9.505211 PDF 3.25 MB https://publications.gc.ca/collections/collection_2026/mpo-dfo/fs97-4/Fs97-4-2265-eng.pdf