大量絶滅における希少性と生態系の未来
Pincelli M Hull1, Simon A F Darroch2,3, Douglas H Erwin2
1Department of Geology and Geophysics, Yale University, New Haven, Connecticut 06520-8109, USA.
Nature
|December 18, 2015
まとめ
現在の生物多様性の危機は 絶滅率ではなく 希少な種の数によって 測れるかもしれません この"大量希少性"は 地球規模の生態系の変化や 過去の大量絶滅について 新たな視点を提示しています
科学分野:
- 古生物学
- エコロジー
- 生物多様性科学
背景:
- 化石記録は 過去の生物多様性喪失と 生態系の混乱を記録しています
- 現在の生物多様性の危機を評価するには 絶滅率の推論をすることがしばしば必要で これは困難です
- 過去の危機と比較して 絶滅の規模に焦点を当てていました
研究 の 目的:
- 生物多様性の危機を測定するために 絶滅率を使うという 従来のアプローチに挑戦する
- より堅固な指標として,以前に豊富な分類の"大量希少性"を提案する.
- 大量絶滅のダイナミクスについて 新たな洞察を提供するためです
主な方法:
- 化石記録と生物多様性データを分析する
- 絶滅率と種数変化の比較
- "大量希少性"という概念の発展.
主要な成果:
- かつて豊富に存在した分類種の希少性は,地球生物圏の変化を誘発する際には,絶滅よりも重要かもしれない.
- 生物多様性の危機を より正確に 測定できるのです
- 過去の大量絶滅のダイナミクスに関する新しい視点が特定されました.
結論:
- "大量希少性"という概念は,現在の生物多様性危機の深刻さを評価する新しい,そして潜在的により正確な方法を提供します.
- 絶滅から希少性へと焦点を移すことは 生態系の動態と 歴史的な大量絶滅の理解を 向上させることができます
- このアプローチは将来の生物多様性評価と保全戦略を洗練することができます.
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