00000nam 2200000zi 4500 9.951537 CaOODSP 20250627102147 m o d f cr mn||||||||| 250529e198402##bccab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x7x8 Fs97-4/1747E-PDF Fs97-4/1747 Boutillier, J. A., author. Abalone survey in the Estevan Group and Aristazabal Island, May, 1983 / by J.A. Boutillier, W. Carolsfeld, P.A. Breen, and K. Bates. Nanaimo, B.C. : Department of Fisheries and Oceans, Fisheries Research Branch, Pacific Biological Station, February 1984. ©1984 1 online resource (iv, 60 pages) : illustrations, map. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; no. 1747 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (pages 6-7). "This survey was conducted to determine whether northern abalone (Hallotis kamtschatkana) abundance had declined on a part of the British Columbia, Canada, coast. A team of two biologists and a commercial abalone diver measured abalone abundance at 42 sites In the Estevan Group and along the west coast of Aristazabal Island, on the north coast of British Columbia, in May 1983. Overall abalone density had declined, abundance of legal sized abalone had decreased, and pre-recruits were less numerous than during previous surveys In 1979 and 1980. A direct comparison of density at eleven previously surveyed sites showed that the decrease in legal size abalone abundance was significant. The decrease appeared to be 45-55%. A comparison of sites selected by fisheries personnel and commercial fishermen indicated that there was no bias in site selection for the purposes of this comparison"--Abstract, page iv. Includes abstracts in English and French. Pinto abalone British Columbia Hecate Strait. Abalone populations British Columbia Hecate Strait. Invertebrate surveys British Columbia Hecate Strait. Ormeau nordique Colombie-Britannique Hécate, Détroit d'. Ormeaux (Mollusques) Populations Colombie-Britannique Hécate, Détroit d'. Invertébrés Inventaires Colombie-Britannique Hécate, Détroit d'. Canada. Department of Fisheries and Oceans, issuing body. Pacific Biological Station (1972- ), issuing body. Canadian manuscript report of fisheries and aquatic sciences ; no. 1747. (CaOODSP)9.505211 PDF 789 KB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-1747-eng.pdf