海洋漁業生産に対する過去の温暖化の影響
Christopher M Free1,2, James T Thorson3,4, Malin L Pinsky5
1Department of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ, USA. cfree14@gmail.com.
まとめ
気候変動は海洋漁業の生産性に悪影響を及ぼしています この研究は,海洋温暖化による1930年から2010年にかけての 最大持続可能な収穫量の4.1%の減少を示しています.
科学分野:
- 海洋生物学
- 気候科学
- 漁業科学
背景:
- 気候変動は海洋生息地を 世界的に変化させています
- これらの変化が漁業の生産性と食糧生産に与える影響は不明である.
- これらの影響を理解することは 持続可能な漁業管理に不可欠です
研究 の 目的:
- 海洋温暖化が魚類や無脊椎動物群の生産性に及ぼす影響を定量化する.
- 気候変動が海洋の食料生産に与える 影響を評価する
- 温暖化に対する住民の反応に影響を与える要因を特定する.
主な方法:
- 温度依存の集団モデルを使用した.
- 124の種と38の生態系で 235の集団を分析した.
- 1930年から2010年までの最大持続可能な収穫量 (MSY) の変化を推定するために使用された.
主要な成果:
- 温暖化は様々な集団に 顕著なポジティブとネガティブな影響を及ぼしました
- 生態学,分類,生命史,利用史が 反応の違いを説明した.
- 評価された集団のMSYは1930年から2010年の間に4.1%減少した.
- 5つのエコリージョンは15%から35%のMSYの損失を経験しました.
結論:
- 海洋温暖化により 海洋漁業の生産性が低下しています
- 漁業管理戦略は 効果的な長期の食糧供給のために 気候変動の影響を考慮に入れる必要があります
- 暖かい海での生産性の変化を把握することは 将来の漁業の成果にとって不可欠です
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