広範囲に広がる植物プランクトンの開花は,2019~2020年のオーストラリアの森林火災によって引き起こされた
Weiyi Tang1,2, Joan Llort3,4, Jakob Weis3,5
1Division of Earth and Climate Sciences, Nicholas School of the Environment, Duke University, Durham, NC, USA.
Nature
|September 16, 2021
まとめ
オーストラリアからの野火のエアロゾールは 南洋に肥料を放ち 広範囲に広がる植物プランクトンの繁殖を引き起こしました これは 森林火災と 栄養素の循環と 変化する気候における海洋生産性の 重要な関連を強調しています
科学分野:
- 環境科学
- 海洋学
- 気候科学
背景:
- 森林火災の頻度と強さは 気候変動によって増加しています
- ワイルドファイア エアロゾールは 鉄のような重要な栄養素を 海に運ぶことができます
- 森林火災によるエアロゾールの沈殿が 海洋の生産性に与える影響は 十分に理解されていません
研究 の 目的:
- 南洋の植物プランクトンの生産性に対する オーストラリアの野火エロゾールの影響を調査するためです
- 海の生態系への火災エロゾールの影響を直接観測する.
主な方法:
- 衛星データを活用して 海洋状態を監視しました
- 自律的な生地化学的なArgo浮遊からデータを使用した.
- エアロゾールサンプルと大気軌跡を分析した
主要な成果:
- 2019年12月から2020年3月までの間,南洋で広範囲にわたる植物プランクトン開花が観察されました.
- オーストラリアの野火で 鉄の含有量が高いことが確認されました
- これらのエアロソルを開花地域へ運ぶ可能性が示された.
結論:
- 植物プランクトンの繁殖は 鉄が限られた南洋の水域で オーストラリアの野火のエアロゾールから 鉄の受精によって引き起こされたようです
- 気候システムのモデリングには 野火-エアロゾール-栄養素の循環の理解が不可欠です
- この研究は世界の炭素循環と 気候規制の洞察を 改善します
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