00000cam 2200000zi 4500 9.964364 CaOODSP 20260915134737 m o d f cr cn||||||||| 260720t20262026bccab ob f000 0 eng d 9780662740278 CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- y1y1 Fs97-6/3803E-PDF Nephin, Jessica, author. Dundavin sponge reef : methods and results from ROV survey PAC2017-094 / by Jessica Nephin, Rayne Loeffler, Sharon Jeffery, Stephanie Archer, Anya Dunham. Sidney, BC : Fisheries and Oceans Canada, Science Branch, Pacific Region, Institute of Ocean Sciences, 2026. ©2026 1 online resource (viii, 25 pages) : colour illustrations, colour maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian technical report of fisheries and aquatic sciences, 1488-5379 ; 3803 Includes bibliographical references (pages 22-25). "In 2017, a scientific survey (PAC2017-094) was led by Fisheries and Oceans Canada (DFO) to map and assess the ecological status and character of the 48km² glass sponge reef in Chatham Sound and to survey a smaller unmapped sponge reef, referred to as Dundavin Reef, in Seaforth Channel, northwest of Bella Bella. The focus of this report is to summarize the methods and results from the survey of Dundavin Reef. Six remotely operated vehicle (ROV) transects, totaling 2.45 km in length and spanning depths of 74–276 m, were conducted, and a sound recording device was deployed. Video and still imagery were collected using the ROV and annotated for species presence and reef-building glass sponge cover. … This survey is the first assessment of the status, extent, and sponge coverage of Dundavin Reef: a small glass sponge reef possibly interspersed with glass sponge gardens on bedrock. The imagery and sound data collected have shown that the reef supports a diversity of reef-associated fishes, invertebrates, and emergent corals; the reef appears to be relatively intact compared to available survey data for other glass sponge reefs. Complete mapping of Dundavin Reef requires further data collection, including high-resolution multibeam echosounder data"--Abstract, page vii. Includes abstracts in English and French. Hexactinellida British Columbia Pacific Coast. Reef ecology British Columbia Pacific Coast. Ecological surveys British Columbia Pacific Coast. Hexactinellides Colombie-Britannique Pacifique, Côte du. Écologie des récifs Colombie-Britannique Pacifique, Côte du. Inventaires écologiques Colombie-Britannique Pacifique, Côte du. Canada. Department of Fisheries and Oceans, issuing body. Institute of Ocean Sciences, Patricia Bay, issuing body. Canadian technical report of fisheries and aquatic sciences, 1488-5379 ; 3803. (CaOODSP)9.504449 PDF 1.68 MB https://publications.gc.ca/collections/collection_2026/mpo-dfo/fs97-6/Fs97-6-3803-eng.pdf