Status of Beluga (delphinapterus Leucas) in the St. Lawrence River Estuary
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چکیده
The St. Lawrence Estuary (SLE) beluga are listed as threatened under the Species at Risk Act; a Recovery Strategy is defined, and their summer Critical Habitat has been identified. A review of the SLE beluga status (2007) concluded that the population was stable over the period 1988-2006. However, in recent years there has been an increase in reports of death of young-of-the-year, and an apparent increase in adult female perinatal mortalities, suggesting that the status of SLE beluga may have changed. Fisheries management requests an update of the status of the SLE beluga population, in particular information on current population size and trends, an analysis of factors that are affecting the population trend, including recruitment levels, sources of mortality, environmental conditions, contaminant loads, and their potential impact on mortality and fecundity.
منابع مشابه
Causes of mortality in St. Lawrence Estuary beluga (Delphinapterus leuca) from 1983 to 2012
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