ANTARCTIC
REGION: SUB-ANTARCTIC DOMAIN
Argentine area
Map
of the Sub-Antarctic Province. 35 k Document.
Biogeography Provinces in Argentina.
57 k document
It occupies a narrow
band to the west of the country, between Neuquén and Tierra del
Fuego.
Climate
Humid,
milder to the north and colder to the south. It hails all year round and it
snows in winter.
Landscape
This is
a mountainous region, with valleys and lakes.
The soils are rocky, with a superficial very fertile layer.
Vegetation
There are
both caducous and perennial forests.
Communities
Four districts
have been identified, with several climax communities.
Pehuén
District:
Located in the west of Neuquén, it is compounded by pure pehuén
forests, o by groups of these trees separated by gramineous steppe.
Caducous Forest
District:
From the south of Neuquén up to Tierra del Fuego. The caducous trees
prevail, such as ñire, lenga, rauli and pellín
oak, although there are also perennial trees such as cypress, and
canas, rushes, etc.
Valdivia District:
In Argentina it covers a small discontinuous surface in Neuquén, Río
Negro and Chubut. It is an extremely humid area, characterized by the presence
of coihue, urmo, alerces and arrayanes.
Magellan District:
In Argentina it covers discontinuous areas in Santa Cruz and Tierra del Fuego.
The prevailing trees are perennial, such as guindo, canelo and
mayten. The peat bogs are also typical of this district.
Fauna
It is easily
characterized due to the high level of endemic species. Many of its components
present different degrees of menace.
Mammals:
Huemul, pudu, puma, huiña cat, red fox,
Patagonian skunk, small ferret, huillín, various
types of bats and rodents, woodland monkey, chunchungo,
etc. Various types of cervids have been introduced.
Birds:
Steam duck, cauquén, agachona, Fueguino parakeet,
carpintero gigante, black necked swan, gallareta, huala,
diving duck, condor, jote, ruby humming bird, chucao,
rayadito, picolezna, fío-fío, diucón,
Patagonian thrush, Araucanian pigeon, tero, southern
oyster catcher, etc.
Reptiles:
Various types of lizards
Amphibians:
Various types of endemic groups (reside only in this region); see the glossary
of zoological terms .
Fish:
Criollo perch, wide mouthed perch, peladillas, velvet
catfish, big puyén, small epuyén, Patagonian
silversmelt, etc. Trout and salmon have been introduced.
Human Activities
Wood development,
small industrial nucleuses, within limited areas.
Flora
and Fauna
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