The Rosenthal Islands are a group of about islands fringing the west coast of
Anvers Island
Anvers Island or Antwerp Island or Antwerpen Island or Isla Amberes is a high, mountainous island long, the largest in the Palmer Archipelago of Antarctica. It was discovered by John Biscoe in 1832 and named in 1898 by the Belgian Antarctic E ...
, north of
Cape Monaco
Cape Monaco () is a cape which forms the southwest tip of Anvers Island, in the Palmer Archipelago, Antarctica. Gossler Islands and Chukovezer Island are lying respectively 3 km west and 7.2 km north of the cape.
Cape Monaco was disco ...
, in the
Palmer Archipelago
Palmer Archipelago, also known as Antarctic Archipelago, Archipiélago Palmer, Antarktiske Arkipel or Palmer Inseln, is a group of islands off the northwestern coast of the Antarctic Peninsula.
It extends from Tower Island in the north to Anvers ...
of
Antarctica
Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean, it contains the geographic South Pole. Antarctica is the fifth-largest contine ...
.
Description
The largest of the islands is
Gerlache
Baron Adrien Victor Joseph de Gerlache de Gomery (; 2 August 1866 – 4 December 1934) was a Belgian officer in the Belgian Royal Navy who led the Belgian Antarctic Expedition of 1897–99.
Early years
Born in Hasselt in eastern Belgium as ...
, which is about 2.5 km long by 1.2 km wide; it rises to a height of 100 m and has a permanent ice-cap. The smaller islands are all less than 500 m across and 100 m in height, and generally ice-free. The islands and adjacent peninsulas are generally rugged, rocky and exposed. The more seaward islands are steeper, with numerous offshore islets and rocks, mostly uncharted. Several islands and peninsulas close to Anvers Island have gentler topography and more accessible shorelines. The nearest permanent research station is the USA's
Palmer
Palmer may refer to:
People and fictional characters
* Palmer (pilgrim), a medieval European pilgrim to the Holy Land
* Palmer (given name), including a list of people and fictional characters
* Palmer (surname), including a list of people and ...
, 20 km to the east at
Arthur Harbour
Arthur is a common male given name of Brythonic origin. Its popularity derives from it being the name of the legendary hero King Arthur. The etymology is disputed. It may derive from the Celtic ''Artos'' meaning “Bear”. Another theory, more ...
, southern Anvers Island.
[
]
Discovery and naming
The islands were discovered by a German expedition to Antarctic waters in 1873–74, under Eduard Dallmann Eduard Dallmann (11 March 1830 – 23 December 1896) was a German whaler, trader, and Polar explorer.
Dallmann was born in Blumenthal, at-the-time a village just to the north of Bremen. He began his adventures as a young sailor at the age of&n ...
, and named by him for Albert Rosenthal
Albert Rosenthal (January 30, 1863 – December 20, 1939) was an American portrait artist, printmaker, writer, and collector from Philadelphia.
Early life
Albert Rosenthal was born in Philadelphia on January 30, 1863, to Max Rosenthal. He stu ...
, Director of the Society for Polar Navigation (''Deutsche Polar-Schifffahrtsgesellschaft'') who, with the Society, sponsored the expedition.
Important Bird Area
A 11,081 ha site, including Gerlache Island and extending 8 km south of the main Rosenthal group to include 35 ice-free islands and peninsulas, has been designated an Important Bird Area
An Important Bird and Biodiversity Area (IBA) is an area identified using an internationally agreed set of criteria as being globally important for the conservation of bird populations.
IBA was developed and sites are identified by BirdLife Int ...
(IBA) by BirdLife International
BirdLife International is a global partnership of non-governmental organizations that strives to conserve birds and their habitats. BirdLife International's priorities include preventing extinction of bird species, identifying and safeguarding ...
, because it supports some 7,300 breeding pairs of Gentoo penguin
The gentoo penguin ( ) (''Pygoscelis papua'') is a penguin species (or possibly a species complex) in the genus ''Pygoscelis'', most closely related to the Adélie penguin (''P. adeliae'') and the chinstrap penguin (''P. antarcticus''). The ear ...
s. Other birds known to breed in the islands include Adélie and chinstrap penguins, southern giant petrel
The southern giant petrel (''Macronectes giganteus''), also known as the Antarctic giant petrel, giant fulmar, stinker, and stinkpot, is a large seabird of the southern oceans. Its distribution overlaps broadly with the similar northern giant pet ...
s, Antarctic tern
The Antarctic tern (''Sterna vittata'') is a seabird in the family Laridae. It ranges throughout the southern oceans and is found on small islands around Antarctica as well as on the shores of the mainland. Its diet consists primarily of small fis ...
s, Antarctic shag
The Antarctic shag (''Leucocarbo bransfieldensis''), sometimes referred to as the imperial cormorant, king cormorant, imperial shag, blue-eyed shag or Antarctic cormorant, is the only species of the cormorant family found in the Antarctic. It is s ...
s, kelp gull
The kelp gull (''Larus dominicanus''), also known as the Dominican gull, is a gull that breeds on coasts and islands through much of the Southern Hemisphere. The nominate ''L. d. dominicanus'' is the subspecies found around South America, par ...
s and south polar skua
The south polar skua (''Stercorarius maccormicki'') is a large seabird in the skua family, Stercorariidae. An older name for the bird is MacCormick's skua, after explorer and naval surgeon Robert McCormick, who first collected the type specimen. ...
s. Other probable breeders are Wilson's storm petrel
Wilson's storm petrel (''Oceanites oceanicus''), also known as Wilson's petrel, is a small seabird of the austral storm petrel family Oceanitidae. It is one of the most abundant bird species in the world and has a circumpolar distribution mainly ...
s and snowy sheathbill
The snowy sheathbill (''Chionis albus''), also known as the greater sheathbill, pale-faced sheathbill, and paddy, is one of two species of sheathbill. It is usually found on the ground. It is the only land bird native to the Antarctic continent.
...
s. The IBA lies within Antarctic Specially Managed Area An Antarctic Specially Managed Area (ASMA) is a protected area on the continent of Antarctica, or on its adjacent islands. ASMAs are managed by the governments of Brazil, Poland, Ecuador, Peru, United States, New Zealand, Australia, Norway, Spain, U ...
(ASMA) No.7 - Southwest Anvers Island and Palmer Basin.
See also
* List of Antarctic and Subantarctic islands
References
Important Bird Areas of Antarctica
Penguin colonies
Seabird colonies
Islands of the Palmer Archipelago
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