00000nam 2200000zi 4500 9.898425 CaOODSP 20221107174835 m o d f cr cn||||||||| 210408t20212021oncbd ob f000 0 eng d 9780660383347 CaOODSP eng rda CaOODSP n-cn-on Fs70-7/2021-012E-PDF Ecological impact of water-level drawdown on Lake Chubsucker (Erimyzon Sucetta) in the St. Clair National Wildlife Area. Science response : ecological impact of water-level drawdown on Lake Chubsucker [Ottawa] : Canadian Science Advisory Secretariat, 2021. ©2021 1 online resource (26 pages) : maps, graphs. text txt rdacontent computer c rdamedia online resource cr rdacarrier Science response, 1919-3769 ; 2021/012 Caption title. "April 2021." Issued also in French under title: Impacts écologiques de l’abaissement du niveau d’eau sur le sucet de lac (Erimyzon succetta) de la réserve nationale de faune de St. Clair. Includes bibliographical references (pages 25-26). "The Lake Chubsucker population in the East cell of the St. Clair Unit is estimated to be below the minimum viable population size of 600–1,000 adults (East cell estimate of 234–247 adults and 1,302–1,375 total individuals), with the probability of extinction greater than Pr = 0.12 in the absence of water level drawdown. Drawdown of the East cell will increase the likelihood of harm to the population, with greatest initial increases in the probability of extinction beginning at drawdown increments of 0.2 to 0.45 m below NOL 176.1, and the probability of extinction reaching 1.0 at drawdown increments of 0.45–0.75 m below NOL 176.1"--Conclusions, page 24. Lake chubsucker Habitat Ontario. Fish populations Estimates Ontario. Canada. Department of Fisheries and Oceans. Central and Arctic Region, issuing body. Canadian Science Advisory Secretariat, issuing body. Impacts écologiques de l’abaissement du niveau d’eau sur le sucet de lac (Erimyzon succetta) de la réserve nationale de faune de St. Clair. (CaOODSP)9.898426 Science response (Canadian Science Advisory Secretariat) 2021/012. (CaOODSP)9.506232 PDF 1.02 MB https://publications.gc.ca/collections/collection_2021/mpo-dfo/fs70-7/Fs70-7-2021-012-eng.pdf