东南太平洋秘鲁鳀渔场变化及与水温关系
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- 英文论文题名：The change of the anchoveta(Engraulis ringens) fishing ground in the Southeast Pacific and its relationship to temperature variables
- 论文作者：陈芃 ; 陈新军
- 英文论文作者：Chen Peng ; Chen Xinjun ; College of Marine Sciences ; Shanghai Ocean University ; National Engineering Research Center for Oceanic Fisheries ; The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources ; Shanghai Ocean University ; Ministry of Education
- 年：2016
- 作者机构：上海海洋大学海洋科学学院;国家远洋渔业工程技术研究中心;大洋渔业资源可持续开发省部共建教育部重点实验室;
- 论文关键词：秘鲁鳀 ; 东南太平洋 ; 表层水温结构 ; 中心渔场
- 英文论文关键词：Anchoveta(Engraulis ringens) ; Southeast Pacific Ocean ; surface temperature structure ; central fishing ground
- 会议召开时间：2016-11-02
- 会议录名称：2016年中国水产学会学术年会论文摘要集
- 语种：中文
- 分类号：S931.4
- 学会代码：OGSB
- 会议名称：2016年中国水产学会学术年会
- 会议地点：中国四川成都
- 主办单位：中国水产学会、四川省水产学会
- 学会名称：中国水产学会
- 页数：1
- 文件大小：560k
- 原文格式：D
- 会议级别：全国
摘要
研究结合2005-2014年渔汛期间秘鲁各港口出港的船数及所获得的秘鲁鳀渔获量和表层水温数据(Sea surface temperature,SST),以单位捕捞努力量的渔获量(Catch per unit effort,CPUE)和捕捞努力量(Effort)数据构建的渔场指数为渔场指标,对秘鲁鳀的渔场类型进行分类,探讨水温结构变化对秘鲁鳀渔场的影响。方差分析表明:渔场指数在不同渔汛阶段(渔汛前期、中期和末期,P<0.01)和捕捞区域(北部、中部和南部,P<0.01)都有极显著的差异。以表层水温大于20o C的海水是否入侵到近岸为标志,可以将秘鲁鳀渔场分成两种类型:大于20o C的海水没有入侵到沿岸(A型渔场)和入侵到沿岸(B型渔场)。研究表明,在渔汛前期和中期阶段,A型渔场的出现有利于渔场的形成,其中渔汛前期沿岸19℃/20℃等温线的出现以及中期沿岸18℃/19℃等温线的出现可以作为中心渔场的指标。
Based on the Peru ports' anchoveta logbooks from 2005 to 2014 and sea surface temperature(SST) data, we built the fishing ground index which was combined by the catch per unit effort and fishing effort, for the purpose of the classification to fishing ground types and the investigation to the effect of changing temperature structure to its fishing ground. The significant differences(P<0.01) in FGI to fishing periods(earlier, mid and later) and fishing areas(north,middle and south) were found by the analysis of variance. It can be divided into two types of fishing grounds by the indicator of the seawater intrusion which was larger than 20 o C into the near shore: A type fishing ground: Seawater larger than 20 o C has not intruded into the near shore; B type fishing ground: The water has intruded into the near shore. This study showed that in the earlier or mid stage of fishing periods, A type fishing ground is good to the formation of fishing ground. The 19 ℃ or 20 ℃ isothermal curve in earlier stage or the 18 ℃ or 19 ℃ in mid stage can be used as the indicator of central fishing ground.
Based on the Peru ports' anchoveta logbooks from 2005 to 2014 and sea surface temperature(SST) data, we built the fishing ground index which was combined by the catch per unit effort and fishing effort, for the purpose of the classification to fishing ground types and the investigation to the effect of changing temperature structure to its fishing ground. The significant differences(P<0.01) in FGI to fishing periods(earlier, mid and later) and fishing areas(north,middle and south) were found by the analysis of variance. It can be divided into two types of fishing grounds by the indicator of the seawater intrusion which was larger than 20 o C into the near shore: A type fishing ground: Seawater larger than 20 o C has not intruded into the near shore; B type fishing ground: The water has intruded into the near shore. This study showed that in the earlier or mid stage of fishing periods, A type fishing ground is good to the formation of fishing ground. The 19 ℃ or 20 ℃ isothermal curve in earlier stage or the 18 ℃ or 19 ℃ in mid stage can be used as the indicator of central fishing ground.
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