漁業の世界的足跡を追跡する

David A Kroodsma¹, Juan Mayorga^2,3, Timothy Hochberg⁴

¹Global Fishing Watch, Washington, DC 20036, USA. david@globalfishingwatch.org.

Science (New York, N.Y.)

|February 24, 2018

まとめ

漁船は海の半分以上を占め農業よりもはるかに大きな足跡を残しています世界的な漁業パターンは経済や環境の変化よりも休日や休業の影響を受けています

科学分野:

海洋生態学
漁業科学
海洋学

背景:

漁業による自然資源の採集は広く行われています
漁業のグローバルフットプリントは十分に理解されず定量化されていません
過去のデータセットでは漁業の精度を正確にマッピングするには空間と時間の解像度が不足していました

研究の目的:

産業用漁業のグローバル・ダイナミック・フットプリントを定量化する.
ダイナミックで高解像度な世界漁業の地図を作成する.
世界的な漁業パターンに影響を与える要因を分析する.

主な方法:

22億の自動識別システム (AIS) メッセージを処理した.
2012年から2016年の間に 7万隻以上の産業用漁船を追跡した.
高解像度の世界的な漁業のデータセットを開発しました.

主要な成果:

産業用漁業は世界の海域の55%以上で行われています
漁業の面積は農業の4倍以上です
漁業のパターンは,短期的な経済的環境変動に対する感受性が低いことを示した.
漁業のパターンは休日や閉鎖などの文化的・政治的イベントに強く反応しました

結論:

産業用漁業は広範囲に広がっています
漁業の分配は環境や経済的な要因だけでなく人間中心の要因によって大きく影響を受けます
この研究は,世界の漁業の影響を理解し,管理するための前例のない解決策を提供します.

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