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i meant by environmenatal factors,features of the habitat that the animal has to cope with.

2007-03-21 03:54:54 · 3 answers · asked by mrs 2 in Environment

3 answers

Drought can be a huge problem for them due to their vital dependance on bamboo.

2007-03-21 04:17:34 · answer #1 · answered by TJTB 7 · 0 0

Despite being called 'koala bears' for many years, koalas are actually marsupials. Bears give birth to well-developed young. Newborn koalas, however, are tiny enough to fit on your thumbnail. They are raised in their mother's pouch.

The closest relative of the koala is the wombat – both animals have pouches which open towards the rear. This is fine for the wombat, but koalas need strong muscles ringing the pouch to keep their young from falling out.

Where do they live?

Koalas are found between south-eastern South Australia and Queensland, but only where enough suitable trees have been left. The largest koalas weigh over 10 kilograms and are found in Victoria, while the smallest live in North Queensland and weigh only 5.5 kilograms. Koalas live for between 10 and 20 years.

What do they eat?

A koala eats about half a kilogram of leaves each day. Koalas are fussy eaters, choosing most of their food from a few varieties of eucalypt. Around Sydney, red gums and mahoganies are their most favoured trees. In northern areas of the State, tallowwood and forest red gum are important, manna gum tops the bill in the south, and in the west koalas prefer river red gum and ribbon gum. They use a variety of other trees for shelter during the day and in heatwaves or storms, including paperbark, she-oak, brush box and acacia trees.

Gum leaves are not the easiest things to digest – they are tough and contain oils which can be poisonous. To cope with such an unusual diet, koalas have a long, thin tube like an appendix branching out from their intestines. This tube grows to a length of two metres. It probably helps with digestion, although its exact function remains a mystery.

As their food contains little energy, koalas conserve energy by sleeping for most of the day and looking for food in the evening

The loss of koala habitat across NSW

Trees help protect koalas from predators and harsh weather, but most importantly they provide them with food. Koalas prefer forests growing in better soils, and most of these forests have been chopped down for agriculture and housing. This has left many koalas living in small, isolated patches of poor quality forest.

If a particular patch of forest is fully occupied and they have to leave the area, young koalas may have to cross open spaces, including roads. They can be run over by cars, and many are attacked by dogs (which means that large dogs living in areas of koala habitat should be carefully supervised). A lack of suitable food and the stress of living in a fragmented environment may also make them more susceptible to disease.

Koalas have been declared a vulnerable species in NSW.

2007-03-21 12:34:29 · answer #2 · answered by Curly 4 · 0 0

eucaliptus leaves is all the Koala bear eats
so his world is confined to these trees
expanding populations that have shrunk their habitats is the biggest problem they got
and they like to be in warm weather

2007-03-21 21:56:48 · answer #3 · answered by Anonymous · 0 0

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