An Update of Beluga (Delphinapterus Leucas) Abundance and Reported Deaths in the St. Lawrence River Estuary PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages : 10
Book Description
"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].
Author: Publisher: ISBN: Category : Languages : en Pages : 10
Book Description
"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].
Author: Jean-François Gosselin Publisher: ISBN: Category : White whale Languages : en Pages : 28
Book Description
“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.
Author: St. Lawrence Beluga Recovery Team Publisher: ISBN: Category : Endangered species Languages : en Pages : 84
Book Description
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.
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Author: 
Author: Jean-François Gosselin
Author: Canadian Science Advisory Secretariat
Author: 
Author: Jean-François Gosselin
Author: Tessa Francis
Author: Véronique Lesage
Author: St. Lawrence Beluga Recovery Team
Author: Canada. Environment Canada
Author: Léone Pippard