プランクトン系フォラミニフェラスの多様性と絶滅に関する海洋学的管理
Shanan E Peters1, Daniel C Kelly, Andrew J Fraass
1Department of Geoscience, University of Wisconsin, Madison, Wisconsin 53706, USA. peters@geology.wisc.edu
Nature
|January 11, 2013
まとめ
地球 地球 地球 地球 地球 地球
科学分野:
- 地球科学 地球科学 地球科学
- パレオントロジー・パレオントロジー
- 海洋学 海洋学 海洋学
背景:
- 長期的な生物進化は環境の変化,特に大量絶滅の影響を受けます.
- 進化における物理的要因と生物学的相互作用の相互作用は不明である.
研究 の 目的:
- テクトニックと気候の変化とプランクトンのフォラミニフェラの進化との関連を調査する.
- 地質学的時間における絶滅と発生率の原動力を決定する.
主な方法:
- 大西洋盆地のマクロストラティグラフィックデータの分析.
- ジュラ紀から現在までのプランクトン系フォラミニフェラの種多様性と絶滅率の調査.
- 進化データと地質学および気候の変化の相関.
主要な成果:
- プランクトン系フォラミニフェラの世界的な種多様性と絶滅率は,構造的および気候的に引き起こされる海洋の変化と相関しています.
- クレタセウス・パレオゲン絶滅やエオセン・オリゴセン移行のような一時的な環境現象は,この長期的傾向に重複しています.
- 種の発生率は,マクロストラトグラフィック数値との相関関係を示さない.
結論:
- 物理化学的な海洋大気の変化は,主として同期絶滅のイベントを誘発する.
- 進化的起源は,複雑で長期的な生物学的および環境的相互作用と関連しています.
- これらのつながりを理解することは,地球科学と将来の進化パターンの予測にとって極めて重要です.
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