The extinction of Biodiversity      

The current species living on this earth are disappearing at an accerating rate. The Earth has always experienced extinction it has had half a billion species on it and of them only 30 million are present today. Statistics from 1990 show that the earth was losing 50 species a day to extinction and it is predicted that by the year 2000 that  would be 10 species every hour.  The is a huge increase, since the rate during the last 250 million years has only been 1 species per a year. This present phenomenon is caused by only one species - the same species that can stop it - that is humans.
        The natural environment has been changed and even destroyed at aN increasing rate. Biodiversity is reduced when people modify ecosystems and destroy habitats of plants and animals. One reason for their extinction() IS the logging of trees that destroyed many habitats of all species that lived in a particular area,but know they are done in way that animal life is not destroyed and the forest will regrow. One disturbance to the web of life will ultimately affect other species, destroying a certain gum tree will destroy koala's, animals that live and eat that tree and then the predators that eat those animals will be destroyed. 

Today’s forest contains around 70 to 90% of the Earth's species and yet they are being destroyed at a RAPID rate. We have already lost half of our forestS and they are disappearing at a rate of 150,000 square kilometers a year, which is nearly 2% of the remaining 8 million square kilometers. In Queensland in just 6,300 square kilometers of rainforests, less than half of what was there 50 years ago. There occurs at least 1,165 plant species of which 1/3 are endemic to the area. Some people believe the Aboriginal people hunted some animals to extinction too like the Mega fauna, which could not compete against Aboriginals with spears because it was so slow.
              27 species of mammals, 10 species of birds and 97 species of plants are known to have became extinct in Australia since the arrival of the British in 1788. A further 3329 species of plants are listed as rare or endangered. The Marsupials that are on the endangered list are dibbler, numbat, proserpine rock wallably, bribled nail-tail wallaby, northern brush-tail bettong, northern hairy nosed wombat, julia creek dunnart, leadbeaters possum, mountain pygmy possum, bilby, long-footed potoroo. In 1788 NSW was home to 131 native mammal species, of these 27 are now extinct and 50 are recognised threatened in the state.     

Today’s forest contains around 70 to 90% of the Earth's species and yet they are being destroyed at a RAPID rate. We have already lost half of our forestS and they are disappearing at a rate of 150,000 square kilometers a year, which is nearly 2% of the remaining 8 million square kilometers. In Queensland in just 6,300 square kilometers of rainforests, less than half of what was there 50 years ago. There occurs at least 1,165 plant species of which 1/3 are endemic to the area. Some people believe the Aboriginal people hunted some animals to extinction too like the Mega fauna, which could not compete against Aboriginals with spears because it was so slow.
              27 species of mammals, 10 species of birds and 97 species of plants are known to have became extinct in Australia since the arrival of the British in 1788. A further 3329 species of plants are listed as rare or endangered. The Marsupials that are on the endangered list are dibbler, numbat, proserpine rock wallably, bribled nail-tail wallaby, northern brush-tail bettong, northern hairy nosed wombat, julia creek dunnart, leadbeaters possum, mountain pygmy possum, bilby, long-footed potoroo. In 1788 NSW was home to 131 native mammal species, of these 27 are now extinct and 50 are recognised threatened in the state.

Australian extinct Vertebrate species
Mammals                                            Last recorded sighting
Thylacine                                                          1936
Pig-footed Bandicoot                                        1907
Desert Bandicoot                                              1931
Lesser Bilby                                                      1931
Desert Rat-kangaroo                                          1935
Broad-faced Potoroo                                        1875
Eastern Hare-wallaby                                         1891
Central Hare-wallaby                                         1932
Toolache Wallaby                                             1924
Cresent Nailtail Wallaby                                     1930's
Short-tailed Hopping-mouse                              1896
Long-tailed Hopping-mouse                               1901
Big-eared Hopping-mouse                                 1843
Darling Downs Hopping-mouse                         1840's
White-footed Rabbit-rat                                     1870's
Lesser Stick-nest Rat                                         1933
Gould's Mouse                                                  1930
Alice Spring Mouse                                           1890's

Birds
Dwarf Emu                                                       1840's
Rufous Bristlebird                                             1906
Paradise Parrot                                                 1927


Reptiles
Adelaide Pygmy Bluetongue Skink                     1959

Endangered animals on this site
Mammals
dibbler
numbat
proserpine rock wallably
bribled nail-tail wallaby
northern brush-tail bettong
northern hairy nosed wombat
julia creek dunnart
leadbeaters possum
mountain pygmy possum
bilby
Smoky Mouse
long-footed potoroo
Chuditch or Western Quoll
Southern Right Whale
Humpback Whale

Birds
Noisy Scrub-bird
Helmeted Honeyeater
Golden shouldered Parrot
Norfolk Island Boobook Owl

Reptiles
Western Swamp Turtle

Fish
Trout Cod

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