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Location Antarctica
Central coordinates 67o 0.39' West  64o 22.04' South
IBA criteria A1, A4ii
Area 123,816 ha
Altitude
Year of IBA assessment 2012





Site description This Marine IBA is identified using tracking data. It falls within the Antarctica Exclusive Economic Zone (EEZ) and the Atlantic, Antarctic FAO ocean region. The site covers an area of 1238 km2 and is 93 km away from the closet coastline. The depth ranges from 400 to 2700 m, mean annual sea surface temperature falls between 0.33 and 0.49 °C and mean annual chlorophyll-a concentrations found to range between 0.28 and 0.52 mg/m3.

Key Biodiversity 2 species trigger IBA criteria at this Marine IBA. BirdLife analyses of tracking data estimates that 3093-12738 individuals of Grey-headed Albatross (VU) from Islas Diego Ramirez are present at the site during the Brood-guard (Dec-Jan) and Post-guard (Feb-May) life-history stages.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Grey-headed Albatross Thalassarche chrysostoma brood-guard  2000  3,093-6,945 individuals  A1  Endangered 
Grey-headed Albatross Thalassarche chrysostoma post-guard  2001  3,093-12,738 individuals  A1, A4ii  Endangered 

Habitats

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

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Atlantic, Antarctic 11 - Marine. Downloaded from http://www.birdlife.org on 26/12/2014

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