This Marine IBA is identified using both tracking data and seaward extensions around breeding colonies. It falls within the St Helena (to UK) Exclusive Economic Zone (EEZ) and the Atlantic, Southeast FAO ocean region. The site covers an area of 136081 km2 and is 1917 km away from the closet coastline. The depth ranges from 0 to 4213 m, with a mean annual wind speed of 2.77 m/s, mean annual sea surface temperature falls between 10.76 and 14.41 °C and mean annual chlorophyll-a concentrations found to range between 0.28 and 0.45 mg/m3.
13 species trigger IBA criteria at this Marine IBA. BirdLife analyses of tracking data estimates that 279-883 individuals of Tristan Albatross (CR) from Gough Island are present at the site during the Brood-guard (Mar-Apr) and Post-guard (Year-Round) life-history stages. 1000-4333 individuals of Sooty Albatross (EN) from Gough Island are present at the site during the Brood-guard (Dec-Jan) and Post-guard (Jan-May) life-history stages. 3543-5451 individuals of Atlantic Yellow-nosed Albatross (EN) from Gough Island are present at the site during the Non-breeding (Sep-Feb) life-history stage. Seaward extensions around breeding colony; Gough Island include key near-colony areas for breeding populations of Northern Rockhopper Penguin (EN) 432705-432705 breeding pairs, Grey Petrel (NT) 30000-30000 breeding pairs, Atlantic Petrel (EN) 60000-60000 breeding pairs, Great-winged Petrel (LC) 15000-15000 breeding pairs, Soft-plumaged Petrel (LC) 150000-150000 breeding pairs, Little Shearwater (LC) 30000-30000 breeding pairs, Great Shearwater (LC) 900000-900000 breeding pairs and Antarctic Tern (LC) 750-1425 breeding pairs.
BirdLife International (2021) Important Bird Areas factsheet: Gough Island - Marine. Downloaded from http://www.birdlife.org on 28/11/2021.