00000nam 2200000zi 4500 9.905690 CaOODSP 20240412141812 m o d f cr cn||||||||| 211207e20210625bccabd ob f000 0 eng d 9780660412214 CaOODSP eng rda CaOODSP eng eng fre n-cn-bc T42-26/2021E-PDF Wladichuk, Jennifer L., author. Modelling underwater sound from small vessels in southern resident killer whale critical habitat : noise reductions for increased approach distances of 400, 600, 800, and 1000 m and changes in listening distances / submitted to: Veronique Nolet and Laurence Lecavalier, Innovation Centre, Transport Canada ; author: Jennifer L. Wladichuk. Noise reductions for increased stand-off distances in SRKW critical habitat Version 4.0. Victoria, BC : JASCO Applied Sciences (Canada) Ltd., 25 June 2021 1 online resource (1 volume (various pagings)) : illustrations, maps, graphs text txt rdacontent computer c rdamedia online resource cr rdacarrier Cover title. "Contract: T8156-17-0001/001/VAN." "Unclassified / Non classifié." "P001370-005 Task 2 Amendment." "Document 02365." Includes bibliographical references (pages 27-30). "Underwater noise from vessels has been identified as a contributing threat to the recovery of Southern Resident killer whales (SRKWs). As part of a coordinated effort to reduce the impact, the Government of Canada increased the whale-watching vessel approach distance from 200 to 400 m for SRKW in 2019. This modelling study was conducted by JASCO Applied Sciences for Transport Canada to determine the changes in noise levels by implementing the 400 m stand-off distance. Longer potential distances of 600, 800, and 1000 m were also assessed using the same approach"--Executive summary, page v. Includes executive summary in English and French. Underwater acoustics British Columbia Vancouver Island Measurement. Ships Noise Environmental aspects British Columbia Vancouver Island. Killer whale Effect of noise on British Columbia Vancouver Island. Killer whale Conservation British Columbia Vancouver Island. Acoustique sous-marine Colombie-Britannique Vancouver, Île de Mesure. Navires Bruit Aspect de l'environnement Colombie-Britannique Vancouver, Île de. Orque Effets du bruit sur Colombie-Britannique Vancouver, Île de. Orque Conservation Colombie-Britannique Vancouver, Île de. Canada. Transport Canada, issuing body. JASCO Research Ltd., consultant. PDF 3.46 MB https://publications.gc.ca/collections/collection_2024/tc/T42-26-2021-eng.pdf 15507E