|Central coordinates||53o 30.00' West 40o 26.75' South|
|IBA criteria||A4ii, A4iii|
|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 75137 km2 and is 374 km away from the closet coastline. The depth ranges from 3934 to 5506 m, with a mean annual wind speed of 2.32 m/s, mean annual sea surface temperature falls between 11.81 and 19.56 °C and mean annual chlorophyll-a concentrations found to range between 0.24 and 0.82 mg/m3.
Key Biodiversity 1 species triggers IBA criteria at this Marine IBA. BirdLife analyses of tracking data estimates that 900000-7000000 individuals of Great Shearwater (LC) from Tristan da Cunha Islands are present at the site during the Non-breeding (Jan-Mar) life-history stage.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Great Shearwater Ardenna gravis||non-breeding||2006||900,000-7,000,000 individuals||-||A4ii||Least Concern|
|A4iii Species group - seabirds||non-breeding||-||900,000-7,000,000 individuals||-||A4iii|
|IUCN habitat||Habitat detail||Extent (% of site)|
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Recommended citation BirdLife International (2014) Important Bird Areas factsheet: Atlantic, Southwest 34 - Marine. Downloaded from http://www.birdlife.org on 26/12/2014
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