00000nam 2200000zi 4500 9.956716 CaOODSP 20251030091449 m o d f cr mn||||||||| 251027e198810##bccb ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x8x8 Fs97-4/1997E-PDF Fs97-4/1997E McCarter, B., author. Hydroacoustic herring survey results and trawl catches from Hecate Strait, November 14-24, 1987, W.E. Ricker cruise WER87J / by B. McCarter, R. Kieser, D.E. Hay, and D.C. Miller. Nanaimo, British Columbia : Department of Fisheries and Oceans, Biological Sciences Branch, Pacific Biological Station, October 1988. ©1988 1 online resource (iv, 72 pages) : maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; no. 1997 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (page 6). "Coastal waters within the 50-200 m bottom contour of Hecate Strait were surveyed to determine Pacific herring abundance estimates and distribution patterns. Total midwater biomass estimates for herring were 11,300 tonnes at Browning Entrance, 2,820 tonnes SW of Bonilla Island, 510 tonnes along Butterworth edge, 620 tonnes in mid-Hecate Strait, 920 tonnes off Lyell Island and 14,620 tonnes in Juan Perez Sound. Herring schools were difficult to integrate acoustically in inlets and narrow sounds because of bottom echo interference and high herring densities near the surface at night. Species composition of thirteen midwater trawl and nine bongo net catches, stomach contents and size and age distribution of herring were also examined. Seawater temperatures were collected at six X.B.T./trawl locations"--Abstract, page iii. Includes abstracts in English and French. Pacific herring British Columbia Hecate Strait. Fish populations Estimates British Columbia Hecate Strait. Fish surveys British Columbia Hecate Strait. Hareng du Pacifique Colombie-Britannique Hécate, Détroit d'. Poissons Populations Estimation Colombie-Britannique Hécate, Détroit d'. Inventaires ichtyologiques 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. 1997. (CaOODSP)9.505211 PDF 1.53 MB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-1997-eng.pdf