Download or read book An Update of Beluga Delphinapterus Leucas Abundance and Reported Deaths in the St Lawrence River Estuary written by and published by . This book was released on 2017 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The St. Lawrence Estuary (SLE) beluga population is located at the southernmost limit of the species range. It occurs primarily in the SLE and seasonally in the Gulf of St. Lawrence. A review of the population status (2007) concluded that the population over the period 1988-2007 was stable. However, in recent years there has been an increase in reported deaths of young-of-the-year and an apparent increase in perinatal mortalities. This increase as well as change in the age/sex structure of the deaths suggests that its status may have changed. A review in 2013 incorporated carcass monitoring and aerial survey data into a population model. The model results indicate that the population was slightly increasing from the 1960s to the early 2000s and has probably declined, to under 1000 animals during the last decade. The Committee on the Status of Endangered Wildlife in Canada (COSEWIC) designated the population as ‘endangered’ in 2014, and its status is "threatened" according to the Species at Risk Act. In 2014, new aerial surveys were flown. The Species at Risk directorate requested that these surveys be reviewed and that the number of reported deaths be updated"--Context, p. [1].
Download or read book Abundance Index of St Lawrence Estuary Beluga Delphinapterus Leucas from Aerial Visual Surveys Flown in August 2014 and an Update on Reported Deaths written by Jean-François Gosselin and published by . This book was released on 2017 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: “The beluga is an Arctic species, and the St. Lawrence Estuary (SLE) population is at the southernmost limit of the species distribution. Up until 2007, the population appeared to be stable. However, unusually high numbers of young of the year found dead in 2008 and 2012, and a low aerial photographic estimate of abundance in 2009, triggered a review of the population status in 2013. Based largely on this review, the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) re-evaluated the status of SLE beluga in 2014, and recommended that the population be designated as ‘Endangered’ (COSEWIC 2014). Here, we present a new abundance index of SLE beluga from a series of eight visual aerial systematic line-transect surveys flown in August and September 2014. This will be used to evaluate trends in abundance along with the 36 visual surveys completed with similar methods since 2001. We also present an update on the number of beluga carcasses that have been recovered since the last assessment (DFO 2014)"--Introd., p. 1, 2.
Download or read book Status of Beluga Delphinapterus Leucas in the St Lawrence River Estuary written by Canadian Science Advisory Secretariat and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Status of Beluga Delphinapterus Leucas in the St Lawrence River Estuary written by and published by . This book was released on 2014 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summer Abundance Indices of St Lawrence Estuary Beluga Delphinapterus Leucas from a Photographic Survey in 2009 and 28 Line Transect Surveys from 2001 to 2009 written by Jean-François Gosselin and published by . This book was released on 2014 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment Approaches to Support Bycatch Management for Marine Mammals written by Tessa Francis and published by Frontiers Media SA. This book was released on 2022-06-21 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Beluga Whale Delphinapterus leucas written by Véronique Lesage and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book St Lawrence Beluga Recovery Plan written by St. Lawrence Beluga Recovery Team and published by . This book was released on 1995 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document reviews the current state of knowledge about St. Lawrence belugas, recommends a series of actions for ensuring their survival and proposes an implementation schedule. The goal of the Recovery Plan is to bring population numbers and conditions to a state where natural event and human activities will not threaten the survival of the St. Lawrence beluga whale population. A subsidiary goal is to improve the status from endangered to vulnerable, as defined by COSEWIC.
Download or read book Monitoring the State of the St Lawrence River Beluga Whale Population of the Estuary written by Canada. Environment Canada and published by Sainte-Foy, Québec : St. Lawrence Vision 2000. This book was released on 2002 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forty second Report of the International Whaling Commission written by Commission baleinière internationale and published by . This book was released on 1992 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of the International Whaling Commission written by International Whaling Commission and published by . This book was released on 1992 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Status Report on the Beluga White Whale St Lawrence River Stock Delphinapterus Leucas written by Léone Pippard and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abundance and Population Trajectory of St Lawrence Estuary Beluga written by and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Beluga written by Pierre Béland and published by Lyons Press. This book was released on 1996 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: A very powerful chronicle of the St. Lawrence River Beluga whales which were hunted to near extinction until given legal protection in 1979, and are now quite literally dying from pollution. Beland (senior research scientist, St. Lawrence National institute of Ecotoxicology) describes the Beluga history, how they live now, the pollution threats to them, and ways in which this kind of tragedy can be prevented in the future, although it looks like it's too late for the Beluga; thus the volume also serves as their elegy. Includes color photographs. Annotation copyright by Book News, Inc., Portland, OR
Download or read book Causes of Mortality in St Lawrence Estuary Beluga Delphinapterus Leucas from 1983 to 2012 written by Stéphane Lair and published by . This book was released on 2014 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mortality Patterns in St Lawrence Estuary Beluga Delphinapterus Leucas Inferred from the Carcass Recovery Data 1983 2012 written by Lesage, V and published by . This book was released on 2014 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gillnets and Cetaceans written by William F. Perrin and published by . This book was released on 1994 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
