サケ属魚類の生態学的研究において，生活史などの個生態学から種内間の生物学的相互作用，および気候変動などの生態系生態学を含む包括的な研究はこれまでほとんど行われてこなかった。著者は，長年，サケ属魚類の生活史，個体群動態，種間相互作用，長期的な気候変動と海洋生態系動態との関係，海域-陸域生態系の物質循環等に関する生態学的研究に携わってきた。すなわち，1）進化生態学的研究に基づく条件戦略による生活史の定義，1-6) 2）個体群の密度依存効果の実証7-9)と環境収容力の定義，10-14) 3）北太平洋各生態系における胃内容物解析と安定同位体比分析から種間の相互作用，種特異的な栄養段階と可塑的な摂餌動態の解明，15-19) 4）長期的な気候変動が海洋生態系とサケ属魚類のバイオマス動態に及ぼす影響，20-28) 5）サケ属魚類による陸圏生態系への物質輸送と生物多様性，29-38) さらに6)地球温暖化がシロザケのバイオマスと回遊に及ぼす影響21,24,26-28,36,38-39)などである。ここでは，サケ属魚類と生態系との関係に焦点を絞り，今後地球温暖化の加速が予測される中，サケ属魚類の持続可能な保全と利用のあり方にむけた生態学的研究について概説する。
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