白令海陆坡头足类群落结构及其与环境因子的关系  

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

作　　者：项盛羽 余为[1,2,3,4,5] 金鹏超 盛怡璐 戴奕霖 李文霞 XIANG Shengyu;YU Wei;JIN Pengchao;SHENG Yilu;DAI Yilin;LI Wenxia(College of Marine Living Resource Sciences and Management,Shanghai Ocean University,Shanghai 201306,China;National Engineering Research Center for Oceanic Fisheries,Shanghai 201306,China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources,Ministry of Education,Shanghai 201306,China;Key Laboratory of Oceanic Fisheries Exploration,Ministry of Agriculture and Rural Affairs,Scientific Observing and Experimental Station of Oceanic Fishery Resources,Ministry of Agriculture and Rural Affairs,Shanghai 201306,China;Scientific Observing and Experimental Station of Oceanic Fishery Resources,Ministry of Agriculture and Rural Affairs,Shanghai 201306,China)

机构地区：[1]上海海洋大学海洋生物资源与管理学院,上海201306 [2]国家远洋渔业工程技术研究中心,上海201306 [3]大洋渔业资源可持续开发教育部重点实验室,上海201306 [4]农业农村部大洋渔业开发重点实验室,上海201306 [5]农业农村部大洋渔业资源环境科学观测实验站,上海201306

出　　处：《上海海洋大学学报》2024年第2期480-492,共13页Journal of Shanghai Ocean University

基　　金：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)。

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/km^(2))出现在55°N;经度上除了在166.5°W、171.5°W和177.5°W附近CPUE值超过1.0 kg/km^(2)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,172°W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。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/km^(2)at 55oN.The CPUE in longitude fluctuated between 0.3 and 0.7 kg/km^(2)except that the value exceeded 1.0 kg/km^(2)around 166.5oW,171.5oW and 177.5°W.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 172°W,species were mainly dominant species,and there were few other species.In the stations west of 172°W,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.

关 键 词：白令海陆坡 头足类 优势种 群落结构 广义相加模型 

分 类 号：S931.1[农业科学—渔业资源]