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Austrlia and prehistoric fire.

Fire originally was not only against the cold or animals. The control of this brought about the improvement of agriculture and hunting effectiveness.

For example, Australian Aborigines migrated from somewhere in Asia makes between about 60,000 and 40,000 years, a period characterized by a decrease in sea level, which led to the existence of an almost continuous land bridge between the two continents. These first Australians were primarily nomadic hunter-gatherers que sobrevivieron y se multiplicaron gracias al profundo conocimiento del territorio, la flora y la fauna, así como a las condiciones climáticas. El fuego y las cenizas resultantes de la quema de las tierras fueron para ellos un medio para aumentar la fertilidad de los pastos; así atrajeron a los canguros y otros animales de caza. Pero no acaba ahí, el incendio de grandes terrenos provocaba la muerte de animales que quedaban atrapados en ellos así como la estampida de otros animales hacia las zonas en las que los cazados esperaban a estos.

Se piensa que la quema de grandes superficies australianas provocadas por el hombre cambió el paisaje a uno más desierto, tal y como lo conocemos ahora.



Aborigines image captured by the British colonialists in 1788. Prefer not to say anything about the pride of the people "civilized."

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Prehistoric man, the extinction of species and climate change.


The man was the principal agent of the extinction of large animals in prehistoric times and not climate change, says a study released by the journal Proceedings of the National Academy of Sciences. 12/08/2008

The study, by British and Australian scientists, indicates that the main evidence is the giant kangaroos and other marsupials that inhabited the island of Tasmania, connected then to South Australia via a land bridge.

was believed that about 43,000 years ago, when man landed on the island, these large animals have become extinct, which exonerated him of involvement in their extinction.

However, the study, using the latest radiocarbon dating techniques, found that Tasmania's giant kangaroos still existed when humans began to populate the region. Species

pushed to an end

The results showed that these animals survived until at least 41,000 years and 2,000 years after they were installed the first human settlements.

As Tasmania's climate did not change dramatically in that time, researchers have indicated that this is further evidence that these species were driven to extinction due to excessive hunting by humans.

"It has significantly weakened the argument that climate change was the cause of a mass extinction," said Chris Turney, a scientist at the University of Exeter (United Kingdom) and author of the study.

The researchers say that the example of Tasmania is applicable to other parts of the world.

These findings on the involvement of prehistoric man in the animal species should clarify its role and climate change in other islands like the UK, scientists say.