Australia and New Zealand
Australia and Oceania

Background information;  by edgardowelelo@yahoo.com

Australia and New Zealand are parts of Australasia, which includes Papua New Guinea. These large islands, ranging from tropical to temperate regions, represent a wide span of habitats, from deserts and coral reefs to rainforests and high mountains with glaciers and snow – capped peaks. Oceania is the name for the Pacific Island World of the South Seas. These islands have different origins: Some are volcanic; others are coral atolls. To most people the South Sea Islands connote a kind of paradise with palm – fringed beaches, lush island vegetation, rich birdlife, and interesting inhabitants of Micronesians, Melanesians, or Polynesians. In many cases this is true, but it is not always so. East of the 80th meridian, for example, a broad strip on both sides of the equator comprises archipelagoes consisting of true desert islands, on which the Polynesians and other forms of life could not retain a foothold. Such a negation of the customary image of the tropical pacific islands as spots of paradise emphasizes again the wide range of habitats in this oceanic area. Hawaii is also included in Oceania. The Hawaiian Islands are entirely volcanic, rising from the depths of the Pacific Ocean about 5,500 meters below sea level to height of 4, 207 meters above sea level.  As the climatic and topographical features of Australasia and Oceania are very different from other areas, so are the plant and animal worlds. Oceanic islands that have been isolated from the continental areas for long periods are natural laboratories where evolutionary changes often follow patterns other than those on the continents. On islands the adaptation to the environment is, as everywhere in nature, governed by the physical and biological surroundings but with a minimum of environmental interactions compared to the complex ecology in most continental solutions. Australia is an island continent, with the result that it has a remarkable flora and fauna quite apart from the rest of the world, even from nearby south eastern Asia. It is the same with New Zealand, Hawaii, and many of the Oceanic Islands, but during the last centuries man has upset and destroyed in frightful ways much of the ecosystems that characterized these areas. A large number of animal species have been exterminated. Yet much still remains of habitats, plants, and animals, particularly in the national parks, which in this way have become real treasures, storing precious natural areas with their living vegetation and fauna for the benefit of mankind of today and tomorrow.

 
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