熱帯雨林の変容により 緑の食物網から茶色の食物網へと エネルギーが再分配されます
Anton M Potapov1,2,3, Jochen Drescher4, Kevin Darras5
1Animal Ecology, University of Göttingen, Göttingen, Germany. potapov.msu@gmail.com.
Nature
|February 14, 2024
まとめ
熱帯地域での土地利用の変化は 動物の食物網を劇的に再構築します 生物多様性の減少は エネルギーの流れを変化させ 地下の生態系を真菌から細菌のエネルギーチャンネルに 移行させ 土壌の健康に影響を与えます
科学分野:
- エコロジー
- 熱帯生物
- 生物多様性に関する研究
背景:
- 陸上の動物の生物多様性は,土地利用の変化により,世界的に減少しています.
- 多様な熱帯生態系における食物網の機能的・エネルギー的な影響は 十分に理解されていない.
研究 の 目的:
- 地上と地下の動物の食物網のエネルギー流の変化を評価する.
- インドネシアのスマトラのプランテーションと 熱帯雨林のエネルギーチャネリングを 比較するためです
主な方法:
- "緑色"の食物網 (天蓋の節足類,鳥類) と"茶色"の食物網 (土壌の節足類,地虫類) のエネルギーフローが研究されている.
- 熱帯雨林とオイルパームとゴムプランテーションを比較し,ゴム農林も含む.
主要な成果:
- 熱帯雨林は エネルギーの大半を 地下へ 主に関節足を通して 送り込んでいます
- プランテーションは,同様のまたはより高い総エネルギーフローを示しますが,エネルギー優位性をアネリド (地虫) に移します.
- 土地利用の変更により,地上の多層エネルギー流が減少し,地下のエネルギー転送がより高いトロフィックレベルに大幅に減少しました.
結論:
- 熱帯地域での土地利用の変化は 動物の食物網のエネルギーと機能の 根本的な再構築を引き起こします
- 地下食物網におけるエネルギー経路の変化と 土壌有機物質の消費は 土壌の炭素枯渇と相関しています
- 生物多様性の減少は,生態系レベルのこれらの重要なエネルギー変化と密接に関連しています.
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