海洋死集団における種の豊富さの保全
1Department of Geophysical Sciences, University of Chicago, 5734 South Ellis Avenue, Chicago, IL 60637 USA. skidwell@midway.uchicago.edu
Science (New York, N.Y.)
|November 3, 2001
まとめ
化石の死亡アセンブリは,輸送と時間平均化にもかかわらず,生きたコミュニティの種の順序を正確に反映しています. この発見は,生態学および古生物学的研究のために化石データを使用することを検証しています.
科学分野:
- パレオバイオロジーの古生物学
- 海洋生態学 海洋生態学とは
- タフォノミア (タフォノミア) とは
背景:
- 化石の集合は,輸送や時間平均などの死後のプロセスのために,生きたコミュニティを反映しないかもしれません.
- 精確な種の豊富さのデータは,生態学と古生物学の研究にとって極めて重要です.
研究 の 目的:
- 時間の平均化による化石の死滅の集合が,生きたコミュニティからの種の豊富さの元の順序を維持しているかどうかを統計的に評価する.
- エコロジカルタイムシリーズの再構築のための化石アセンブリの信頼性を決定する.
主な方法:
- 海洋モルシュカン85種のデータセットの統計的メタアナリシスを実施しました.
- 環境要因とシートマッシュサイズが組み立ての信頼性に与える影響を評価した.
主要な成果:
- 時間平均の死亡アセンブリは,元の種のランク順序の強い信号を保持しています.
- 組み立ての信頼性は,網のサイズと環境条件に敏感です.
- 化石データは,種の豊富さに関する信頼できる情報を提供します.
結論:
- 自然に蓄積された死亡アセンブラージは,種の豊富なデータの信頼できる情報源です.
- これらのデータは,古生物学的およびマクロ生態学的研究を進めるための鍵です.
- 化石アセンブリは,堆積物のコアを通して,生態学的タイムシリーズの延長を可能にします.
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