シンガポールの森林伐採に続く災害的な絶滅が,シンガポールの森林伐採に続く
Barry W Brook1, Navjot S Sodhi, Peter K L Ng
1Center for Ecological Research, Kyoto University, Otsu 520-2113, Japan. barry.brook@ntu.edu.au
Nature
|July 25, 2003
まとめ
熱帯地域で生息地が失われると,生物多様性が著しく減少する. シンガポール シンガポール シンガポール
科学分野:
- エコロジー エコロジー エコロジー
- 保護生物学の保護生物学
- 生物多様性研究 生物多様性研究
背景:
- 熱帯生物多様性は,大量絶滅のイベントによって脅かされています.
- 熱帯の絶滅に関する経験的データはほとんどなく,ほとんどの報告は逸話的なものである.
- 生息地喪失は,これらの地域における生物多様性の減少の主な要因である.
研究 の 目的:
- 広範囲にわたる生息地喪失によるシンガポールの局所的な絶滅を記録する.
- 様々な分類の絶滅率を定量化するために.
- 東南アジアにおける将来の生物多様性損失を予測するために,これらの発見を推論する.
主な方法:
- 183年にわたってシンガポール (540 km2) の局所的な絶滅を研究した.
- 評価された生息地の損失は95%を超えています.
- 陸生類と淡水類の絶滅率の記録と推論.
- エクストラポレーションのために,校正された種面積モデルを使用した.
主要な成果:
- 特に森林専門家のために,文書化され,推論された大量絶滅率が見つかりました.
- 蝶,魚,鳥,哺乳類は,絶滅した種の割合が最も高い (34-87%) でした.
- 森林保護区 (0.25%の面積) は,現在,残された本土の生物多様性の50%以上を収容しています.
結論:
- シンガポールは,生息地の喪失により,現地で大規模な絶滅を経験しました.
- 東南アジアは,次の世紀に地域の人口の13%から42%の潜在的損失に直面しています.
- 世界的な種の絶滅を緩和するために,緊急の保全努力が必要である.
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