00000nam 2200000zi 4500 9.932565 CaOODSP 20250424125540 m o d f cr mn||||||||| 240117e197811##bccb ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x7x7 Fs97-4/1485E-PDF Fs97-4/1485 Haegele, C. W., author. Shoreline vegetation on herring spawning grounds between Deep Bay and Dorcas Point, Strait of Georgia, B.C. / by C.W. Haegele. Nanaimo, British Columbia : Department of Fisheries and the Environment, Fisheries and Marine Service, Resource Services Branch, Pacific Biological Station, November 1978. ©1978 1 online resource (iv, 49 pages) : maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Fisheries and Marine Service manuscript report, 0701-7626 ; 1485 ISSN of series should read 0701-7618. Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (page 9). "The ability to accurately record and assess herring spawnings depends to a considerable degree on a knowledge of the vegetative substrate upon which the adhesive eggs are deposited. Large format colour and colour-infrared photographs were obtained for the shoreline between Deep Bay and Dorcas Point on April 7, 1977. Vegetation maps were prepared from these using colour and texture keys previously developed. Subsequently, between March 5 and April 11, 1978, a diver survey of herring spawnings in the study area was used to evaluate the accuracy of the photo-mapped vegetation. Divers collected 418 samples on 62 diving transects. Vegetation was identified on aerial photographs for 72% of these samples. For samples taken on herring spawn transects, vegetation was identified for 80% of samples. Vegetation not identified on photographs was always in deeper water and of low percent cover. There were 103 species of algae and sea grasses collected. The vegetation is commonly up to 600 m wide and the total area of vegetation identified from photographs is 6.2 x 10⁶ m² along 60 km of coastline"--Abstract, page iii. Includes abstracts in English and French. Marine plants Georgia, Strait of (B.C. and Wash.) Maps. Vegetation mapping Georgia, Strait of (B.C. and Wash.) Pacific herring Spawning Georgia, Strait of (B.C. and Wash.) Flore marine Géorgie, Détroit de (C.-B. et Wash.) Cartes. Cartographie de la végétation Géorgie, Détroit de (C.-B. et Wash.) Hareng du Pacifique Frai Géorgie, Détroit de (C.-B. et Wash.) Canada. Fisheries and Marine Service, issuing body. Pacific Biological Station (1972- ), issuing body. Manuscript report (Canada. Fisheries and Marine Service) no. 1485. (CaOODSP)9.924185 PDF 1.19 MB https://publications.gc.ca/collections/collection_2024/mpo-dfo/fs97-4/Fs97-4-1485-eng.pdf