世界の未査定漁業の現状と解決策
Christopher Costello1, Daniel Ovando, Ray Hilborn
1Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106, USA. costello@bren.ucsb.edu
Science (New York, N.Y.)
|September 29, 2012
まとめ
評価されていない多くの漁業は状態が悪いが,大きな漁業は持続可能かもしれない. 世界的な漁業の再建は,魚の豊富さと収穫を大幅に増加させる可能性があります.
科学分野:
- マリン・バイオロジー マリン・バイオロジー
- 漁業 科学 漁業 科学
- 保護生物学の保護生物学
背景:
- 最近の報告は,評価された漁業の持続可能性の改善を示しています.
- しかし,世界の漁獲の80%以上は,未評価の漁業からであり,その地位は不明である.
- これらの未評価の漁業の状況を評価することは,世界の漁業管理にとって極めて重要です.
研究 の 目的:
- 世界中で未評価の漁業の持続可能性を評価する.
- 査定されていない漁業の状況と,公式に査定された漁業の状況を比較する.
- グローバルな漁業回復の可能性を決定する.
主な方法:
- 種の生命史,漁獲,漁業開発データを統合した新しい方法を開発した.
- この方法を適用して,世界の何千もの未評価の漁業の状況を推定しました.
- 資源の豊富さと潜在的な持続可能な収穫の傾向を分析した.
主要な成果:
- 査定されていない小規模漁業は,査定された漁業よりも著しく悪い状態にある.
- 評価されていない大規模な漁業は,評価された漁業と比較できるパフォーマンスを示しています.
- 減少にもかかわらず,未評価の64%は,持続可能な収穫を増やすために再構築することができました.
結論:
- 世界の漁業回復は,魚の豊富さ (56%) と収穫 (8-40%) を増加させる大きな可能性を秘めている.
- 評価されていない漁業の効果的な管理は,世界の海洋資源の持続可能性にとって極めて重要です.
- 調査結果は,世界の漁業の大部分の評価と管理戦略の改善の必要性を強調しています.
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