コメント on "トリアシク初期温室期の致命的な高温"
N Goudemand1, C Romano, A Brayard
1Palaeontological Institute and Museum, University of Zurich, Zurich, Switzerland. goudemand@pim.uzh.ch
Science (New York, N.Y.)
|March 2, 2013
まとめ
ペルミアからトリアシク中期の海水温を再考したこの研究では,修正されたデータは,生物の"日食"を引き起こす"致命的に熱い"状態の以前の主張をもはや支持していないことがわかりました. この発見は,既定の古気候の解釈に異議を唱えている.
科学分野:
- 古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは
- マリン・バイオロジー マリン・バイオロジー
- 地質時間のスケール 地質時間のスケール
背景:
- Sun et al.による以前の研究. 高いペルミアン・トライアスク海水温と生物の絶滅との間には相関関係があることを示唆した.
- 元の研究は赤道を提案した.
研究 の 目的:
- パーミアからトリアシク中期までの赤道海水温度データの時間的位置づけと解釈を再評価する.
- 再構築された温度と提案された有機体の間のリンクの妥当性を評価する.
主な方法:
- 既存の古気温データポイントの時間位置の修正.
- 温度動向の再分析と生物学的出来事との関連.
主要な成果:
- 修正されたデータポイントは,以前に想定された気温の動向を裏付けません.
- "致命的に熱い"海水と生物の"日食"の間の直接的な関係が提案されていることは,再分析されたデータによって裏付けられていない.
結論:
- 地平線の海洋生物に対するペルミアン-トライアス熱ストレスに関する元の解釈は,修正されたデータによって支持されていません.
- ペルミ・トライアス生物学的変化の原動力を理解するために,さらなる研究が必要である.
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