沿岸植物植物の春の開花の生理学的および生態学的要因
Kristen R Hunter-Cevera1, Michael G Neubert1, Robert J Olson1
1Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA.
Science (New York, N.Y.)
|November 16, 2016
まとめ
気候変動によって 植物プランクトンの開花時期が変わります 暖かい水は細胞分裂を早め シネココクスのような沿岸の植物プランクトンの 春の開花を早め 海の食物網に影響します
科学分野:
- 海洋生態学
- 海洋学
- 気候科学
背景:
- 植物プランクトンは 海洋の食物網と生地化学のサイクルにとって 極めて重要です
- 気候変動の影響 咲くタイミング 仕組みは完全に理解されていません
- 気候変化が海洋生態系に及ぼす影響を予測するには 花の動態を理解する必要があります
研究 の 目的:
- 植物プランクトンの開花時間を変化させるメカニズムの調査.
- 環境要因と花の現象学との関係を分析する.
- シネココクスの開花時間とその要因の長期的傾向を評価する.
主な方法:
- ニューイングランド・シェルフの 沿岸のシネココクスの 13年毎のタイムシリーズを利用した.
- 研究期間中の花開の変動を分析した.
- 環境の変数,特に水温と相関する開花時間の変化.
主要な成果:
- 13年にわたる春のシネココクスの開花の4週間の変化を観察した.
- 細胞分裂率の温度による変化によって,花開の時期の多年傾向が導かれていることが示された.
- 春の温度の上昇が 早期に花を咲かせることを発見しました
- シネココックスの減少率は 分裂率と並行して変化した.
結論:
- 細胞分裂速度の温度による変化は,植物プランクトンの開花タイミングの変化の主なメカニズムです.
- シネココクスの集団の成長と損失の間の持続的なバランスは,現象学的変化にもかかわらず維持されています.
- 気候変動が海洋生態系に及ぼす影響を 予測するためには これらのメカニズムを理解することが不可欠です
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