気候変動が水産資源の変動に与える影響を理解する上での問題点と今後の展望  [in Japanese] A review of issues on elucidation of climate variability impacts on living marine resources and future perspectives  [in Japanese]

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Abstract

<p>気候変動が水産資源の変動に与える影響を理解するために,これまで様々な研究が行われてきた。しかし,水産資源生物の生残にとって最も重要と考えられる仔稚魚期に,水産資源生物が実際に経験した環境を観測できないことが,1つの問題となってきた。本稿では,これまで行われてきた研究の概要をまとめるとともに,気候変動に対する水産資源の応答を調べる方法として,仔稚魚の耳石日周輪幅による成長履歴の推定,耳石酸素安定同位体比分析および魚類成長-回遊モデルの融合による経験環境と回遊経路の推定を組み合わせた新たな解析方法を提案する。</p>

<p>Various studies have been conducted to elucidate the climate variability impacts on living marine resources. Larval and juvenile stages are critical periods for the recruitment of living marine resources. However, limitations of observation methods for directly investigating the environments that larvae and juveniles experienced have been obstacles to our understanding. We reviewed the previous studies on climate variability impacts on living marine resources and discussed how reconstruction of environmental histories of larvae and juveniles is important for our understanding of climate variability impacts on living marine resources. We proposed a new, integrated method to reconstruct environmental histories of larvae and juveniles using otolith oxygen stable isotope analyses and fish growth–migration models. Together with the growth estimated from otolith daily increments, it is possible to elucidate climate impacts on larval and juvenile growth through environmental histories of larvae and juveniles using their realistic migration routes.</p>

Journal

  • Oceanography in Japan

    Oceanography in Japan 27(1), 59-73, 2018

    The Oceanographic Society of Japan

Codes

  • NII Article ID (NAID)
    130006489385
  • NII NACSIS-CAT ID (NCID)
    AN10382760
  • Text Lang
    JPN
  • ISSN
    0916-8362
  • NDL Article ID
    028847826
  • NDL Call No.
    Z15-778
  • Data Source
    NDL  J-STAGE 
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