草食は,地球全体で植物の回復の成功を制限する
Changlin Xu1, Brian R Silliman2, Jianshe Chen1
1MOE Key Laboratory for Biodiversity Science and Ecological Engineering, National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, School of Life Sciences, Fudan University, Shanghai, China.
Science (New York, N.Y.)
|November 2, 2023
まとめ
草食性の管理は 生態系の回復の鍵です 草食動物を除外したり 捕食動物を加えたりすると 植物の回復と生物多様性が大きく増加し 他の一般的な回復方法よりも 優れています
科学分野:
- エコロジカルな回復
- コミュニティエコロジー
- 保護生物学
背景:
- 生態系の回復は 生物多様性と生態系の機能の改善を 目指しています
- 修復の成功を制限する要因を理解することは,効果的な実施に不可欠です.
- 植物のダイナミクスに影響を与える重要な生態学的相互作用です.
研究 の 目的:
- 草食動物が植物の回復に及ぼす影響に関する世界的な研究を統合する.
- 草食動物が回復の成果に影響を与える程度を特定する.
- 回復戦略として草食管理の有効性を評価する.
主な方法:
- 公開された610件の論文から2594件の実験結果のグローバルメタ分析.
- 修復された場所と劣化していない場所の草食動物への影響の比較
- 異なる気候条件 (気温,降雨) の下で草食者の影響を評価する.
主要な成果:
- 草食動物は 回復場所の植生を大幅に (平均89%) 減少させた.
- 草食動物は 植物の多様性を抑制し 回復させるどころか
- 温暖で乾燥した地域では 草食動物による悪影響がより深刻でした
- 草食動物を除外したり 捕食動物を導入したりすると 回復の成果が大幅に向上します
結論:
- 草食動物は 生態系の回復過程で 植生を強くコントロールします
- 草食を排除したり 肉食動物を導入したりすることで 非常に効果的な回復戦略です
- 気候は,乾燥した温暖な環境ではより大きな影響で,回復の成功に対する草食性の影響に影響を与えます.
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