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首页> 外文期刊>Climatic Change >Impacts of climate change on growth, migration and recruitment success of Japanese sardine (Sardinops melanostictus) in the western North Pacific
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Impacts of climate change on growth, migration and recruitment success of Japanese sardine (Sardinops melanostictus) in the western North Pacific

机译：气候变化对北太平洋西部日本沙丁鱼（Sardinops melanostictus）的生长，迁移和募集成功的影响

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摘要

We developed a multi-trophic level ecosystem model by coupling physical, biogeochemical-plankton and fish models. An oceanic general circulation model was coupled with a lower trophic level ecosystem model and a Japanese sardine migration model, and applied to the western North Pacific. To investigate the impact of global warming on the pelagic fish ecosystem, such as Japanese sardine, we conducted numerical experiments of growth and migration of Japanese sardine using physical fields for the present day and future with a global warming scenario simulated by a high-resolution climate model. The model results demonstrated possible impacts of global warming on the growth and migration pattern of Japanese sardine. The growths of fish in the current main spawning region under the global warming scenario were significantly slower than those under the present climate scenario. Fish in this region will be at disadvantage for their recruitment under the global warming condition. Prey conditions in the spawning region were projected not to markedly change under global warming condition while water temperature increased. As a result sardine spawning ground was projected to shift towards more north areas. During the feeding migration period in summer, geographical distribution of juveniles fish was projected to shift northwards by one to two degrees latitude under the global warming condition following the change in the distribution of optimal temperature region for feeding. However, this northwards shift of the optimal temperature for feeding was minimized adjacent to the western North Pacific by the cooler water supply by the intensification of the Oyashio.
机译：我们通过结合物理，生物地球化学-浮游生物和鱼类模型开发了多营养水平的生态系统模型。海洋大环流模型与低营养水平的生态系统模型和日本沙丁鱼迁移模型相结合，并应用于北太平洋西部。为了研究全球变暖对日本沙丁鱼等中上层鱼类生态系统的影响，我们利用物理场对当今和未来进行了日本沙丁鱼生长和迁移的数值实验，并以高分辨率气候模拟了全球变暖的情况。模型。模型结果证明了全球变暖对日本沙丁鱼生长和迁移模式的可能影响。在全球变暖情况下，当前主要产卵区的鱼类生长明显慢于目前气候情况下的鱼类生长。在全球变暖条件下，该区域的鱼类因其补充而处于不利地位。预计产卵区的猎物条件在全球变暖条件下不会随着水温的升高而发生明显变化。结果，沙丁鱼产卵场预计将向更北部地区转移。在夏季取食迁徙期间，随着最佳摄食温度区域的变化，预计在全球变暖条件下，幼鱼的地理分布向北移动一到两个纬度。但是，由于Oyashio的集约化，较冷的水供应使与西北太平洋相邻的最佳摄食温度向北移动最小。

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  • 来源
    《Climatic Change》 |2012年第4期|p.485-503|共19页
  • 作者

    Takeshi Okunishi; Shin-ichi Ito; Taketo Hashioka; Takashi T. Sakamoto; Naoki Yoshie; Hiroshi Sumata; Yumiko Yara; Naosuke Okada; Yasuhiro Yamanaka;

  • 作者单位

    Tohoku National Fisheries Research Institute, Fisheries Research Agency, 3-27-5 Shinhama-cho, Shiogama, Miyagi, 985-001, Japan;

    Tohoku National Fisheries Research Institute, Fisheries Research Agency, 3-27-5 Shinhama-cho, Shiogama, Miyagi, 985-001, Japan;

    Faculty of Environmental Earth Science, Hokkaido University, N10W5, Sapporo, Hokkaido, 060-0810, Japan;

    Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8564, Japan;

    Center for Marine Environmental Studies, Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan;

    Alfred Wegener Institute for Polar and Marine Research, Bussestrasse 24, 27570, Bremerhaven, Germany;

    Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan;

    Faculty of Environmental Earth Science, Hokkaido University, N;

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