Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
Overall past and predicted future declines
amount to a rapid population reduction over a period of three generations, qualifying the species as Vulnerable. At South Georgia, this species is undergoing a rapid decline over three
generations (70 years). On the Crozet and Kerguelen Islands, the populations rapidly declined between 1970-1986, then stabilised, but have recently declined again. Longline fishing is
believed to be a main cause of decline in this species, causing reductions in adult survival and juvenile recruitment, and this threat is ongoing.
20100 mature individuals
Distribution size (breeding/resident):
Land-mass type - oceanic island - Oceanic islands are islands or island groups that are <200,000 sq km in size and separated from other land masses by >200 m sea depth. Generally Oceanic islands are islands or island groups that are <200,000 sq km in size and separated from other land masses by >200 m sea depth. Generally they have never been connected to a continental area by a land-ridge, and are volcanic in origin.
Realm - Afrotropical - realm
Realm - Neotropical - realm
Realm - Oceanic - realm
IUCN Ecosystem -- Marine biome
IUCN Ecosystem -- Terrestrial biome