Australia

Australia place on globe

The Commonwealth of Australia is a country in the Southern Hemisphere comprising the world's smallest continent and a number of islands in the Southern, Indian and Pacific Oceans. Australia's neighbouring countries are Indonesia, East Timor and Papua New Guinea to the north, the Solomon Islands, Vanuatu and New Caledonia to the north-east, and New Zealand to the south-east.

The continent of Australia has been inhabited for over 40,000 years by Indigenous Australians. After sporadic visits by fishermen from the north, and by European explorers and merchants from the 17th century onwards, the eastern half of the continent was claimed by the British in 1770, and officially settled as the penal colony of New South Wales on 26 January 1788. As the population grew and new areas were explored, another five largely self-governing Crown Colonies were successively established over the course of the 19th century.

Map of Australia

On 1 January 1901, the six colonies federated and the Commonwealth of Australia was formed. Since federation, Australia has maintained a stable liberal democratic political system and remains a Commonwealth Realm. The current population of around 20.4 million is concentrated mainly in the large coastal cities of Sydney, Melbourne, Brisbane, Perth and Adelaide.

Origin and history of the name
The name Australia is derived from the Latin australis, meaning southern. Legends of an "unknown southern land" (terra australis incognita) date back to the Roman times, and were commonplace in mediæval geography, but were not based on any actual knowledge of the continent. The Dutch adjectival form Australische ("Australian", in the sense of "southern") was used by Dutch officials in Batavia to refer to the newly discovered land to the south as early as 1638. The first writer in English to use the word "Australia" was Alexander Dalrymple in his An Historical Collection of Voyages and Discoveries in the South Pacific Ocean, published in 1771. He used the term to refer to the whole South Pacific region, not specifically to the Australian continent. In 1793, George Shaw and Sir James Smith published Zoology and Botany of New Holland, in which they wrote of "the vast island, or rather continent, of Australia, Australasia or New Holland."

History

Endeavour replica in Cooktown harbour

The date of the first human habitation of Australia is estimated to be between 42,000 and 48,000 years ago. The first Australians were the ancestors of the current Indigenous Australians, and arrived via land bridges and short sea-crossings from present-day south-east Asia. Most of these people were hunter-gatherers, with a complex oral culture and spiritual values based on reverence for the land and a belief in the Dreamtime. The Torres Strait Islanders, ethnically Melanesian, inhabited the Torres Strait Islands and parts of far-north Queensland; they possess distinct cultural practices and practised subsistence agriculture.
The first undisputed recorded European sighting of the Australian continent was made by the Dutch navigator Willem Jansz, who sighted the coast of Cape York Peninsula in 1606. During the 17th century, the Dutch charted the whole of the western and northern coastlines of what they called New Holland, but made no attempt at settlement. In 1770, James Cook sailed along and mapped the east coast of Australia, which he named New South Wales and claimed for Britain. The expedition's discoveries provided impetus for the establishment of a penal colony there following the loss of the American colonies that had previously filled that role.

Flora and fauna
The Tammar Wallaby is an Australian marsupial. The genome of the wallaby is currently being sequenced; when the sequencing is completed, it will be a major contribution to marsupial biology.

Although most of Australia is semi-arid or desert, it covers a diverse range of habitats, from alpine heaths to tropical rainforests. Because of the great age and consequent low levels of fertility of the continent, its extremely variable weather patterns, and its long-term geographic isolation, much of Australia's biota is unique and diverse. About 85% of flowering plants, 84% of mammals, more than 45% of birds, and 89% of in-shore, temperate-zone fish are endemic. Many of Australia's ecoregions, and the species within those regions, are threatened by human activities and introduced plant and animal species. The federal Environment Protection and Biodiversity Conservation Act 1999 is a legal framework used for the protection of threatened species. Numerous protected areas have been created to protect and preserve Australia's unique ecosystems, 64 wetlands are registered under the Ramsar Convention, and 16 World Heritage Sites have been established. Australia was ranked 13th in the World on the 2005 Environmental Sustainability Index.

Most Australian plant species are evergreen and many are adapted to fire and drought, including the eucalypts and acacias. Australia has a rich variety of endemic legume species that thrive in nutrient-poor soils because of their symbiosis with Rhizobia bacteria and mycorrhizal fungi. Well-known Australian fauna include monotremes (the platypus and echidna), and a host of marsupials, including the koala, kangaroo, wombat, and birds such as the emu, cockatoo, and kookaburra. The dingo was introduced by Austronesian people that traded with Indigenous Australians around 4000 BCE. Many plant and animal species became extinct soon after human settlement, including the Australian megafauna; many more have become extinct since European settlement, among them the Thylacine (Tasmanian Tiger).

See:
• Sport Fishing
• Tuna
• Big Game Fishing

• This article is licensed under the GNU Free Documentation License.
• It uses material from the Wikipedia article "Australia".