晩四年期の牧草者絶滅に対する火災活動の世界的反応
A. Tyler Karp Karp1, J Tyler Faith2,3,4, Jennifer R Marlon5
1Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA.
Science (New York, N.Y.)
|November 25, 2021
まとめ
草食動物の大規模な絶滅により 草地生態系における火災活動が増加し,特に 草食動物の大規模な損失が 発生しました これは 草食が火力学に 重要な影響を及ぼし 地球システムプロセスに影響を与えることを示唆しています
科学分野:
- 古代生態学
- 火の生態学
- 気候科学
背景:
- 世界的な火災活動は 気候に強く影響されています
- 広範囲の時空スケールでの火災活動に対する草食性の影響は,ほとんど不明である.
- 大型草食動物の絶滅は 晩四半期に 独特の世界的な実験を 提供した.
研究 の 目的:
- 草地生態系の古火災活動に対する四季期の大型の草食動物絶滅の影響を調査する.
- 絶滅の深刻さと大陸間の火災活動の変化の関係を評価する.
- 放牧者と放牧者との間の差異的な影響を火災管理に決定する.
主な方法:
- 石炭の代理物を使って 古代の火災を再現した
- 四国期の末期の大型草食動物の絶滅の深刻さにおける大陸の違いを分析した.
- 草食動物と草食動物を区別して,火災活動の変化を比較した.
主要な成果:
- 草地生態系における火災は,大型の草食動物が絶滅した後に著しく増加した.
- 放牧者の損失が大きい大陸では 放牧者の火災が 増加しています
- ブラウザー集団の減少は,火災活動の大幅な変化と相関していません.
結論:
- 草食は地球上の火災活動に大きな影響を及ぼし 地球システムのプロセスに影響を与えます
- 過去の草食動物絶滅は 草食動物による火災の変化の証拠です
- 変化する環境下での将来の火災活動を予測するには 草食動物の影響を理解することが重要です
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