"海洋漁業の生産に対する歴史的温暖化の影響"に関するコメントへの返信

Christopher M Free^1,2, James T Thorson^3,4, Malin L Pinsky⁵

¹Department of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ, USA. cfree14@gmail.com.

Science (New York, N.Y.)

|August 17, 2019

まとめ

年齢構造の変動は魚の過剰生産に影響します私たちの研究では成長と雇用を含む過剰生産は雇用のみよりも食品ネットワークの影響をより包括的に表しています

科学分野:

漁業科学
エコロジー
人口動態

背景:

年齢構造は魚群の動態と生産性に影響する重要な要因です
漁業管理の重要な指標である過剰生産は漁業の持続能力を反映しています
以前の研究では,雇用が生産性の主要な要因とされ,他の重要な要素は無視されていた.

研究の目的:

魚群の過剰生産に対する年齢構造の影響を調査する.
生産性を評価する指標として,過剰生産と雇用の有効性を比較する.
温度などの環境要因と魚の生産の関係を解明する.

主な方法:

年齢構造やその他の混同要因を制御するためのゼロモデルの開発と適用.
成長,採用,その他の人口プロセスを含む過剰生産の分析.
温度と生産の関係を評価するための統計モデルです.

主要な成果:

ゼロモデルでは年齢構造を効果的に制御し,温度と生産の関係を分離しました.
複合的な指標である過剰生産は雇用のみよりも食物連鎖の影響についてより完全なイメージを提供した.
結果は,生産性の評価に複数の人口統計的プロセスを含めることを支持しています.

結論:

過剰生産は生態系の生産性と食糧ネットワークのダイナミクスを示す強力な指標です
魚の生産に対する環境影響の評価には,年齢構造を考慮することが不可欠です.
この研究により漁業の生産性指標の理解が深まりました

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