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| Flora and fauna in Bermuda ： ウィキペディア英語版 |
Wildlife of Bermuda
The flora and fauna of Bermuda form part of a unique ecosystem due to Bermuda's isolation from the mainland of North America. The wide range of endemic species and the islands form a distinct ecoregion, the Bermuda subtropical conifer forests.
==Setting==
Located in the United States of America 900 km off the American coast, Bermuda is a crescent-shaped chain of 184 islands and islets that were once the rim of a volcano. The islands are slightly hilly rather than having steep cliffs, with the highest point being 79m. The coast has many bays and inlets, with sandy beaches especially on the south coasts. Bermuda has a semi-tropical climate, warmed by the Gulf Stream current. Twenty of the islands are inhabited, and Bermuda is one of the most densely populated countries in the world.
Wildlife that could fly to the island or were carried there by winds and currents formed the species. There are no native mammals other than bats, and only two reptiles, but large numbers of birds, plants, and insects. Once on the island, organisms had to adapt to local conditions, such as the humid climate, lack of fresh water, frequent storms, and salt spray. The area of the islands shrank as water levels rose at the end of the Pleistocene epoch, and fewer species were able to survive in the reduced land-area. Nearly 8,000 different species of flora and fauna are known from the islands of Bermuda. The number is likely to be considerably higher if all microorganisms, cave-dwellers and deep-sea species were counted.〔(【引用サイトリンク】title=Bermuda Biodiversity Project )〕
Today the variety of species on Bermuda has been greatly increased by introductions, both deliberate and accidental. Many of these introduced species have posed a threat to the native flora and fauna because of competition and interference with habitat.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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