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Flora
and Fauna
Despite
large tracts of dry and barren land, much of Australia is
well vegetated. Plants can be found even in the arid centre,
though many of them grow and flower erratically. Unique Australian
native plants such as the sturt desert pea, kangaroo paw and
waratah have evolved over time and are often only found in
small micro-climates.
Australia's
distinctive vegetation began to take shape about 55 million
years ago when Australia broke from the super continent of
Gondwanaland, drifting away from Antarctica toward warmer
climes. As the rainforests retreated, due to the gradual drying
of the continent, plants like the eucalypts and wattles (acacias)
took over.
The
gum tree (or eucalypt) is found everywhere in Australia except
in the deepest of rainforests and the most arid regions. Gum
trees vary in height and form from the tall, straight hardwoods
to the stunted, twisted snow gum with its colourful trunk
striations. Other distinctive gums are the ghost gum with
its distinctive white trunk and the beautiful salmon-coloured
Darwin woollybutt gums.
Monotremes
are regarded as virtually living fossils and Australia has
two - the platypus and the echidna. They are both egg-laying
mammals, which suckle their young on milk, and have survived
partly due to above-mentioned isolation and because they have
become so highly specialised. The platypus can be found in
the eastern areas of Australia, with the echidna widespread,
from the deserts to the alps.
The
gum tree features in Australian folklore, art and literature.
Many varieties flower, the wood is prized and its oil is used
for pharmaceuticals and perfumed products. About 600 varieties
of wattles are found in Australia, growing in a variety of
conditions. Many wattles have deep green leaves and bright
yellow to orange flowers. When the country is ablaze with
wattle during the late winter and spring, the choice of wattle
for our national floral emblem and green and gold for our
national colours is obvious.
Australia
is blessed with a fascinating mix of native fauna, which ranges
from the primitive to the highly evolved. The Australian landmass
is one of the most ancient in the world, and because the sea
has kept it isolated from other continents, Australian fauna
is very distinct.
Monotremes are regarded as virtually living fossils and Australia
has two - the platypus and the echidna. They are both egg-laying
mammals, which suckle their young on milk, and have survived
partly due to above-mentioned isolation and because they have
become so highly specialised. The platypus can be found in
the eastern areas of Australia, with the echidna widespread,
from the deserts to the Alps.
Kangaroos
are probably the most instantly recognisable Australian mammals
and they range from the tiny tree kangaroos to the 'big reds',
which can be up to 2 metres high and weigh 90kg. The extraordinary
breeding cycle of the kangaroo is well adapted to Australia's
harsh and often unpredictable environment. The kangaroo embryo
can be held in a temporary state of suspended development
if food or water becomes scarce.
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2001. Outback Encounter
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