まとめ
沿岸地帯カラースキャナー (CZCS) の画像を用いて,ロス海で強烈な植物プランクトン開花が検出されました. この季節の早い時期に咲く花は,この地域の初等生産性の見積もりが大幅に増加しました.
科学分野:
- 海洋学 海洋学 海洋学
- マリン・バイオロジー マリン・バイオロジー
- リモートセンシング (リモートセンサー)
背景:
- ロス海は,南極の重要な海洋生態系である.
- 植物プランクトンの開花は南洋の食物網と炭素循環にとって不可欠です.
- 季節の初期に開花する花の動態を理解することは,生産性の正確な評価に不可欠です.
研究 の 目的:
- 衛星画像を用いて,ロス海西部の強烈な植物プランクトン開花を分析するために.
- 初期開花期における一次生産性を計算する.
- 地域の春から夏の炭素生産の見積もりを再評価する.
主な方法:
- 1978年12月のCZCS (コスタル・ゾーン・カラー・スキャナー) 衛星画像.
- 大規模な植物プランクトン開花 (>10万6000平方キロメートル) の空間的範囲をマッピングしました.
- 画像から計算された一次生産性率.
主要な成果:
- ポリニアの形成から2週間以内に,強烈な植物プランクトンの開花が観察されました.
- 12月の初等生産性は3.9gC/m2/dayに達し,後のin situ測定値より4倍も高い.
- 推定春夏生産は,以前の3倍から4倍に増加した.
結論:
- ロス海ポリニアの初期の季節の植物プランクトン開花は,地域の一次生産に大きく貢献しています.
- 衛星のリモートセンシングは,南極海の生産性を監視するための貴重なデータを提供します.
- 以前の生産性の見積もりは,季節初期に開花する花の重要性を過小評価していたかもしれない.
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