|Central coordinates||64o 15.00' West 64o 39.00' South|
|IBA criteria||A1, A4ii|
|Altitude||0 - 250m|
|Year of IBA assessment||2011|
Site description A small (41 ha) ice-free islet of low relief lies 0.5 km from the west coast of Anvers Island, and ~4.5 km to the south of Gerlache Island in the Rosenthal Islands. A large Gentoo Penguin colony is located on the island, and the IBA extent is defined by the island coastline.
Information on the environment at this island is not available, although the geology is likely to be similar to that on Anvers Island, which has granitic and volcanic origins.
The nearest permanent scientific station is Palmer (US), situated ~20 km to the east at Arthur Harbour, southern Anvers Island. See Ant012 for more information on Palmer Station and local climate.
Key Biodiversity A Gentoo Penguin (Pygoscelis papua) colony of ~3000 pairs was recorded on the islet in 1987 (Poncet & Poncet 1987). There is no information on any other birds breeding at this site.
Non-bird biodiversity: Southern Giant Petrels (Macronectes giganteus) are known to breed on the west coast of Anvers Island (W. Fraser, pers. comm., 2006). See Ant 012 for information on other species observed in the region.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Gentoo Penguin Pygoscelis papua||breeding||1987||3,000 breeding pairs||-||A1, A4ii||Near Threatened|
Protection status ASMA No.7
References ASMA No. 7 Palmer Basin and Southwest Anvers Island: Management Plan (2008); Palmer LTER project URL: http://pal.lternet.edu/, accessed: 04/08/2010.
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Recommended citation BirdLife International (2015) Important Bird Areas factsheet: Islet south of Gerlache Island, Palmer Archipelago. Downloaded from http://www.birdlife.org on 05/05/2015
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