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植物の遺伝子型多様性は,コミュニティの構造を予測し,生態系のプロセスを支配する
Gregory M Crutsinger1, Michael D Collins, James A Fordyce
1Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN 37996, USA. gcrutsin@utk.edu
Science (New York, N.Y.)
|August 19, 2006
まとめ
植物の遺伝子型多様性は,節足類のコミュニティと生態系の生産性に大きな影響を与えます. ソリダゴ・アルティシマの遺伝的多様性の増加は,節足類の多様性を高め,地上での純一次生産性 (ANPP) を高めました.
科学分野:
- エコロジー エコロジー エコロジー
- 進化生物学の進化生物学について
- 植物科学 植物科学について
背景:
- 植物種の多様性は,草食動物の多様性や,純一次生産性などの生態系機能に影響することが知られている.
- コミュニティの構造と生態系プロセスに対する植物集団内の遺伝的多様性の役割は,理解されがちです.
研究 の 目的:
- 人口の遺伝子型多様性が,節足類の多様性や生態系プロセスに及ぼす影響を実験的に調査する.
- 遺伝子型多様性の影響と植物種多様性の影響を比較する.
主な方法:
- 支配的な古い畑植物のソリダゴ・アルティシマの遺伝子型多様性の実験操作.
- 結果として生じる節足類の多様性,コミュニティ構造,および地上での純一次生産性 (ANPP) の評価.
主要な成果:
- ソリダゴ・アルティシマの集団の遺伝子型多様性の増加は,関節足類の多様性とコミュニティの構造を著しく決定した.
- 遺伝子型多様性の高まりは,ANPPの増加につながった.
- これらの影響の大きさは,他の研究で植物種の多様性について観察されたものと比較できます.
結論:
- 集団の遺伝子型多様性は,節足類のコミュニティと生態系の機能を形作る重要な要因です.
- 遺伝子型多様性は,ANPPのような生態系プロセスを,種の多様性と同様の程度に媒介することができます.
- 将来の生態学的研究は,植物集団内の遺伝的多様性の影響を考慮すべきである.
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