email a friend
printable version
close| Location | High Seas |
| Central coordinates | 53o 30.00' West 40o 26.75' South |
| IBA criteria | A4ii, A4iii |
| Area | 7,513,698 ha |
| Altitude | |
| Year of IBA assessment | 2012 |
Ornithological information 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.
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.
Populations of IBA trigger species
| Species | Season | Period | Population estimate | Quality of estimate | IBA Criteria | IUCN Category |
|---|---|---|---|---|---|---|
| Great Shearwater Puffinus 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 |
Contribute Please click here to help BirdLife conserve the world's birds - your data for this IBA and others are vital for helping protect the environment.
Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Atlantic, Southwest 34 - Marine. Downloaded from http://www.birdlife.org on 19/06/2013
To provide new information to update this factsheet or to correct any errors, please email BirdLife
|
|