蒋明峰,陈新军,许子安,林泓羽,吕泽华,雷林,贺海平,贾海滨,汪金涛

• 1:上海海洋大学海洋科学学院
• 2:大洋渔业资源可持续开发教育部重点实验室
• 3:国家远洋渔业工程技术研究中心
• 4:农业农村部大洋渔业开发重点实验室

摘要(Abstract)：

为了解在不同厄尔尼诺-南方涛动(ENSO)事件下中西太平洋鲣鱼(Katsuwonus pelamis)资源的变动规律，本研究根据中西太平洋渔业委员会(WCPFC)2008—2018年中西太平洋鲣鱼的生产数据，结合海洋尼诺指数(ONI),利用聚类分析和灰色关联分析，研究季时间尺度下鲣鱼的自由鱼群和随附鱼群的渔场空间特征及其与ENSO事件的关系。季尺度下渔场重心聚类分析表明，各簇所包含季度发生的异常气候事件具有一致性。拉尼娜时期，两种鱼群的主要渔场都有向西移动的趋势，厄尔尼诺时期则相反。在异常气候事件下，随附鱼群的迁移幅度小于自由鱼群，且随附鱼群渔场的经向分布更稳定。不同ENSO模态下，资源丰度的空间分布存在差异。对自由鱼群而言，在拉尼娜事件发生于第1、2季度时165°E以西海域的资源丰度最高，灰色关联度为0.650,在拉尼娜事件发生于第3、4季度时165°E—180°海域的资源丰度最高，灰色关联度为0.411,在厄尔尼诺时期，180°以东海域的资源丰度最高，灰色关联度为0.727。对随附鱼群而言，165°E以西海域及165°E—180°海域资源丰度最高时期为拉尼娜时期，灰色关联度分别为0.852和1.000, 180°以东海域资源丰度最高时期为厄尔尼诺时期，灰色关联度为1.000。研究结果可用于气候变化背景下鲣鱼渔情的预报。

关键词(KeyWords)： 鲣鱼;聚类分析;灰色关联度;中西太平洋;厄尔尼诺-南方涛动

Abstract:

Keywords:

基金项目(Foundation): 国家重点研究发展计划项目(2019YFD0901404);; 国家自然科学基金项目(41876141);; 上海市科技创新行动计划项目(19DZ1207502)资助~~

作者(Author): 蒋明峰,陈新军,许子安,林泓羽,吕泽华,雷林,贺海平,贾海滨,汪金涛

DOI: 10.16441/j.cnki.hdxb.20220320

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