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世界中で両生類の減少と絶滅の状況と傾向
Simon N Stuart1, Janice S Chanson, Neil A Cox
1IUCN Species Survival Commission/Conservation International Center for Applied Biodiversity Science Biodiversity Assessment Unit, 1919 M Street N.W., Washington, DC 20036, USA. s.stuart@conservation.org
まとめ
両生類は地球規模の絶滅危機に直面しており,鳥や哺乳類よりも急速に減少しています. 未確認の脅威は,絶滅危惧種の約半分を危険にさらしており,緊急の保全研究が必要となっている.
科学分野:
- 保護生物学の保護生物学
- 動物学 動物学
- エコロジー エコロジー エコロジー
背景:
- 世界中で両生類の個体数は著しく減少しています.
- 両生類は,鳥類や哺乳類と比較して,より大きな脅威と,より速い減少率に直面しています.
研究 の 目的:
- 両生類の保全状況に関する最初の世界的な評価を実施する.
- 両生類の減少の主な要因とパターンを特定する.
- 両生類の生存に対する脅威を理解し,対処する緊急性を強調する.
主な方法:
- 両生類の全般的な評価. 両生類の全般的な評価.
- 生態学的好み,地理的範囲,分類学に基づく減少パターンの分析.
- 絶滅の危険に寄与する既知の脅威と未知の脅威の特定.
主要な成果:
- 両生類は鳥や哺乳類よりも脅威にさらされています.
- 住環境の喪失と過剰利用は重大な脅威ですが,未確認のプロセスは,減少している種の48%に影響を与えます.
- 減少はネオトロピカル・マウンテン,ストリーム関連種に集中しています.
- 何百もの両生類が絶滅の危険にさらされています.
結論:
- 両生類の減少は,地球規模の重要な保全問題である.
- 未知の要因は,両生類の絶滅の主な要因である.
- 脆弱な両生類の個体群,特にネオトロピクス地域において,標的を絞った保全戦略が必要である.
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