Atlantic, Southwest 28 - Marine

Site description (2012 baseline):

Site location and context
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 3397 km2 and is 406 km away from the closet coastline. The depth ranges from 1039 to 2000 m, mean annual sea surface temperature falls between 8.04 and 8.67 °C and mean annual chlorophyll-a concentrations found to range between 0.46 and 1.18 mg/m3.

Key biodiversity
2 species trigger IBA criteria at this Marine IBA. BirdLife analyses of tracking data estimates that 1534-1342 individuals of Wandering Albatross (VU) from South Georgia are present at the site during the Sabbatical (Oct-May) life-history stage. 2500000-900000 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 28 - Marine. Downloaded from on 26/02/2024.