00000cam 2200000zi 4500 9.964398 CaOODSP 20260721082731 m o d f cr mn||||||||| 260721t20012000bccab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc x8x9 Fs97-4/2556E-PDF Fs97-4/2556E Alexander, Richard F., author. The 1998 fishwheel project on the Nass River, BC / prepared by Richard F. Alexander and Michael R. Link. Prince Rupert, British Columbia : Fisheries and Oceans Canada, Science Branch, Pacific Region, 2001. ©2000 1 online resource (xi, 110 pages) : illustrations, map. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; 2556 "LGL Limited, environmental research associates, for the Nisga'a Tribal Council." Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (pages 16-17). "Four fishwheels were operated on the lower Nass River from 12 June to 13 October 1998. The fishwheels operated for a total of 9,874 h and captured 38,155 salmon. Catches of adult salmon included 19,176 sockeye, 10,624 pink, 3,869 coho, 3,507 chinook, 707 steelhead, and 272 chum. Of these, 4,030 sockeye, 2,766 coho, 1,606 chinook salmon, and 635 steelhead were tagged. Totals of 388 chinook, 1,752 sockeye and 1,148 coho salmon from the catch were successfully aged using scales. A total of 3,297 tagged fish were later recovered in fisheries and on tributaries of the Nass River. Counts of marked and unmarked fish from the Meziadin fishway and in-river harvests were used to compute net escapement estimates for sockeye (266,458) and coho salmon (42,320). The coho estimate represented only a portion of the total coho escapement because the fishwheels did not operate through the entire coho run and recovery efforts were confined to an early run stock (Meziadin River). The net chinook escapement (23,213) was derived by a mark-recapture estimate (spawning ground surveys) minus estimated in-river harvests. The four fishwheels combined caught an estimated 12.6% of the chinook run, 8.9% of the coho run, and 6.2% of the sockeye run. Including subsequent in-river harvests, an estimated 32,548 chinook and 304,888 sockeye salmon entered the Nass River in 1998. Daily tag release (at the fishwheels) and recovery data (at the Meziadin fishway) were used to reconstruct the sockeye abundance in the lower river and assess the within season variation in the portion of the sockeye run caught by the fishwheels"--Abstract, page x. Includes abstracts in English and French. Pacific salmon British Columbia Nass River. Steelhead (Fish) British Columbia Nass River. Escapement (Fisheries) British Columbia Nass River. Fishes Counting British Columbia Nass River. Fish tagging British Columbia Nass River. Fishwheels British Columbia Nass River. Saumons du Pacifique Colombie-Britannique Nass, Rivière. Truite arc-en-ciel Colombie-Britannique Nass, Rivière. Échappée (Pêches) Colombie-Britannique Nass, Rivière. Poissons Comptage Colombie-Britannique Nass, Rivière. Poissons Marquage Colombie-Britannique Nass, Rivière. Tourniquets (Pêches) Colombie-Britannique Nass, Rivière. Canada. Department of Fisheries and Oceans, issuing body. Canada. Department of Fisheries and Oceans. Pacific Region. Science Branch, issuing body. L.G.L. Limited, Environmental Research Associates, consultant. Canadian manuscript report of fisheries and aquatic sciences ; 2556. (CaOODSP)9.505211 PDF 3.48 MB https://publications.gc.ca/collections/collection_2026/mpo-dfo/fs97-4/Fs97-4-2556-eng.pdf