白令海陆坡头足类群落结构及其与环境因子的关系
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上海市人才发展资金项目(2021078);上海市自然科学基金(23ZR1427100);国家自然科学基金青年基金(41906073)


Cephalopod community structure and its relationship with environmental factors in the Bering Sea slope
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    摘要:

    根据2002、2004、2008、2010、2012和2016年白令海陆坡海域底层拖网的资源调查数据,探讨了白令海大陆坡头足类优势种及其空间分布与环境因子的关系,分析了白令海陆坡头足类的群落组成,量化了其资源丰度(以CPUE表征)在经纬度上的分布情况,并通过生态学方法对头足类群落多样性进行了研究。结果显示,调查共鉴定头足类20种,分别隶属于3目9科15属。在纬度上,CPUE最高值(0.78 kg/km2)出现在55oN;经度上除了在166.5oW、171.5oW和177.5oW附近CPUE值超过1.0 kg/km2外,其余经度均稳定在0.3~0.7 kg/km2之间。优势种为贝乌贼、水蛸、加利福尼亚面蛸、光滑深海蛸和太平洋僧头乌贼,并且优势种的分布在空间上存在一定的差异,172oW以东的站点头足类以优势种为主,优势种以外的其他种类分布较少,而在172oW以西的站点中,除了贝乌贼和水蛸资源丰度占比较高外,非优势种的其他头足类占比也较高。GAM分析表明经度、纬度、深度、底层水温和表层水温是影响大多优势种资源丰度的重要因子,聚类分析结果显示不同区域存在两大集群,不同集群之间群落多样性指数存在较大的差异。

    Abstract:

    Based on the trawl survey data along the Bering Sea slope in 2002, 2004, 2008,2010,2012 and 2016, all the cephalopods species were selected in this study. With the cephalopods data, we analyzed the cephalopods community composition, determined the dominant species and their spatial distribution in relation to environmental factors in the Bering Sea slope based on the generalized additive model, and quantified the distribution of cephalopods abundance (indicated by catch per unit effort, CPUE) in latitude and longitude. The diversity of cephalopods community was further evaluated according to the ecological methods. The results showed that a total of 20 cephalopods species were identified belonging to 3 orders, 9 families and 15 genera. The highest CPUE of the cephalopod species in latitude was 0.78 kg/km2 at 55oN. The CPUE in longitude fluctuated between 0.3 and 0.7 kg/km2 except that the value exceeded 1.0 kg/km2 around 166.5oW, 171.5oW and 177.5oW. The dominant cephalopod species in the survey area were Berryteuthis magister, Enteroctopus dofleini, Opisthoteuthis californiana, Benthoctopus leioderma, and Rossia pacifica. Among them, there were significant spatial differences in the distribution of dominant species. In the stations east of 172oW, species were mainly dominant species, and there were few other species. In the stations west of 172oW, the CPUE of other cephalopods was relatively high except for Berryteuthis magister and Enteroctopus dofleini. GAM model analysis showed that longitude, latitude, bottom depth, bottom temperature and surface temperature were important factors affecting the CPUE of the most dominant species. The results of cluster analysis showed that there were two main clusters in different regions, and great differences were found in the community diversity index among different clusters.

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项盛羽,余为,金鹏超,盛怡璐,戴奕霖,李文霞.白令海陆坡头足类群落结构及其与环境因子的关系[J].上海海洋大学学报,2024,33(2):480-492.
XIANG Shengyu, YU Wei, JIN Pengchao, SHENG Yilu, DAI Yilin, LI Wenxia. Cephalopod community structure and its relationship with environmental factors in the Bering Sea slope[J]. Journal of Shanghai Ocean University,2024,33(2):480-492.

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  • 收稿日期:2023-04-02
  • 最后修改日期:2023-08-10
  • 录用日期:2023-09-25
  • 在线发布日期: 2024-03-19
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