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The Andean mountain system, in which the Andean
cat is found, belongs to the Central Andes and part of the Southern
Andes and includes a series of mountainous chains that comprise
three important eco-regions for the Andean cat; the high Andean
eco-region, the Puna and the southern Andean Steppe.
The
high Andean region contain the high mountains of the Andean mountain
range and its average altitude varies from 3000 m in its more
southern or south part (Argentina) to more than 4400 m toward
the north (Bolivia and Peru). The Puna, which is found
at lower elevations, between 3200 and 3700 m, is characterized
by the presence of extensive and high plateaus or rolling plains
that are crossed by a series of mountains.
In both eco-regions the climate is severe, cold and dry with
intense solar radiation and large daily thermal variations; mean
annual temperatures varies from less than 0° to 4°C,
and between 8º and 9ºC, being the lower values for
the high Andean region. Precipitation is also low and varies
from less than 100 to 800mm annually and it is more abundant
during summer; in the high Andean region the rain falls mainly
as hail or snow. Along the Andean mountain range climatic conditions
vary from northeast to southwest; to the south the rainfall diminishes,
the rainy season is shorter and aridity is greater.
Fauna
and Flora species are similar for both eco-regions; they are
adapted to cold and arid environments. The plants show anatomical
and physiological adaptations (hard, small and scale-shaped leaves,
growth in the shape of cushions or plates, etc.) and the animals
show besides ethological adaptations.
The vegetation is characterized by the presence of low pasturelands
with the dominance of grasses and small plants. The bushes are
represented mainly by extensive tholares"" (Parastrephia
spp. and Lepidophyllum spp.). In areas with more severe
climatic conditions, the vegetation is shorter and its distribution
is more scattered. In the rocky zones of volcanic origin grow
cushions of “yareta” (Azorella compacta) and
the queñoa (Polylepis spp.), the only arboreal
species that has adapted to these high altitude conditions. The
presence of “bofedales” or fertile and wet plains
is also characteristic in these high altitude environments and
they are an important resource for wildlife and domestic animals
that inhabit the area.
The fauna in both regions is similar; among the carnivorous, besides
the Andean cat we found the pampas cat (Oncifelis colocolo),
the puma (Puma concolor), the Andean or “culpeo” fox (Pseudalopex
culpaeus), the lesser ferret (Galictis cuja) and the skunk (Conepatus
chinga); in Argentina is also found the gray fox (P. griseus). The
herbivorous are represented by the vicuña (Vicguna
vicugna), the guanaco (Lama guanicoe), the Andean
deer or taruka (Hippocamelus antisensis) and a variety of rodents,
standing out the vizcacha (Lagidium viscaccia and L.
peruanum) as the main prey of the Andean cat. As
species of particular importance, we found in Chile the long-tailed
chinchilla (Chinchilla lanigera) and it is possible that small populations
of the short-tailed chinchilla (Chinchilla brevicauda)
are still found in the high zones of Chile and Bolivia. The
Andean condor (Vultur gryphus), the “suri” or
rhea (Pterconemia
pennata) and three species of flamingos (Phoenicoparrus
andinus, P. jamesi and Phoenicopterus chilensis)
are the typical bird representatives of these regions; in addition
a great variety of aquatic bird life has a very important presence,
especially in the high-Andean region.
In
recent years the presence of the Andean cat was discovered
in the eco-region of the southern Andean steppe, in the
Argentinean provinces of San Juan and Mendoza. This region
extends along the mountains of the western and central zone of
Argentina and the adjacent part of Chile; and includes many of
the highest peaks of South America. It is a predominantly
dry zone, with a rain gradient in north-south direction from
200 to 600 mm, and the rainfall increases with the altitude.
The maximum elevation limits for vegetation are found approximately
at 5000 meters above sea level to the north and at 3000 asl to
the south.
Several flora genera that are characteristic of this eco-region
have evolved toward various endemic species. The plants often
show adaptations to conditions of cold, extreme dryness and strong
wind, and commonly present thorns and defences against herbivorous,
along with very conspicuous flowers to attract pollinators. The
fauna of this region is related to those of the neighbouring
eco-regions, especially with that of the Central Puna and Patagonian
steppe.
Conservation status
An assessment of the conservation status of the eco-regions of
Latin America situates the Puna region (including the high
Andean region) of the Central Andes in the Vulnerable category
and within the levels of high priority for its conservation
at the regional level.
The southern Andean steppe is a low populated zone and at present
does not show serious threats with regards to habitat degradation,
then, it is considered as relatively stable. Nevertheless,
it is important to take into account in the future that activities
such as tourism and mountaineering, currently in growth, as well
as the development of agriculture at great scale and cattle breeding,
can produce greater impacts. Likewise the introduction
of exotic species and the hunt of native mammals can also alter
the ecosystems of this region.
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