Data Zone
Country/territory: High Seas
IBA criteria met: A4ii (2012)
For more information about IBA criteria, please click here
Area: 7,513,698 ha
Site description (2012 baseline)
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.
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Atlantic, Southwest 34 - Marine (High Seas). Downloaded from
https://datazone.birdlife.org/site/factsheet/atlantic-southwest-34--marine-iba-high-seas on 04/12/2024.