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Location High Seas
Central coordinates 38o 0.82' West  50o 8.99' South
IBA criteria A1, A4ii, A4iii
Area 2,821,376 ha
Year of IBA assessment 2012

Site description This Marine IBA is identified using tracking data. It falls within High Seas International Waters and the Atlantic, Southwest FAO ocean region. The site covers an area of 28214 km2 and is 286 km away from the closet coastline. The depth ranges from 2282 to 5243 m, with a mean annual wind speed of 2.91 m/s, mean annual sea surface temperature falls between 2.28 and 3.95 °C and mean annual chlorophyll-a concentrations found to range between 0.47 and 1.57 mg/m3.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Grey-headed Albatross Thalassarche chrysostoma brood-guard  1993  922-2,499 individuals  A1  Endangered 
Grey-headed Albatross Thalassarche chrysostoma non-breeding  1999  31,205 individuals  A1, A4ii  Endangered 
Wandering Albatross Diomedea exulans immature (non-breeding)  2003  559-1,118 individuals  A1, A4ii  Vulnerable 
Southern Giant Petrel Macronectes giganteus brood-guard  1999  2,250-9,000 individuals  A4ii  Least Concern 
Northern Giant Petrel Macronectes halli brood-guard  1999  1,616 individuals  A4ii  Least Concern 
Northern Giant Petrel Macronectes halli post-guard  1999  1,552-5,819 individuals  A4ii  Least Concern 
A4iii Species group - seabirds non-breeding  31,205 individuals  A4iii   


IUCN habitat Habitat detail Extent (% of site)
Sea   100%

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Atlantic, Southwest 47 - Marine. Downloaded from on 01/11/2014

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