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南沙群岛西南部海域和北部湾口海域底层游泳动物多样性 [中文引用][英文引用]

Diversity of demersal nekton in the southwestern sea of the Nansha Islands and the mouth of Beibu Bay

作者(英文):LI Yuan1 4  ZHANG Jing2 4  ZHANG Ran1  SONG Puqing1  ZHONG Zhihui1  WANG Yanping1  LIN Longshan1  DOU Shuozeng3 
关键词(英文):South China Sea  nekton  species diversity  index of relative importance(IRI) 
分类号:S931
出版年·卷·期(页码):2016·23·第1期(177-187)
DOI: 10.3724/SP.J.1118.2016.15133
-----摘要:-------------------------------------------------------------------------------------------

根据2012-2013年在南沙群岛西南部和北部湾口海域进行的秋季和春季两个航次的调查资料,分析了这两个区域游泳动物的种类组成,计算渔获种类的相对重要性指数(IRI)、Margalef种类丰富度指数(D)、Shannon-Weiner种类多样性指数(H')、Pielou均匀度指数(J')和资源密度。结果表明,南海调查海域春秋两个航次的渔获物中,共鉴定出游泳动物663种,隶属于4纲36目171科374属;其中鱼类为504种,占所有渔获种类的76.0%。优势种种数较少,且季节变化较大。春季游泳动物的多样性指数高于秋季,这主要是由于春季出现大量补充群体,并且有许多种类在秋季向较深海区移动所造成的。南沙群岛西南部海域游泳动物多样性指数高于北部湾口海域,这可能是由于南沙群岛西南部海域受水温和洋流的影响较大所造成的。目前,南海北部渔业资源处于过度捕捞状态,资源结构呈现小型化和低值化。对南北海域资源调查结果进行比较发现,南沙群岛西南部海域资源相对较好。应合理开发利用该海域渔业资源,同时加强物种多样性的保护工作。

-----英文摘要:---------------------------------------------------------------------------------------

We performed a fixed-point survey in the southwestern sea of the Nansha Islands (SS) and the mouth of Beibu Bay (SN) in the South China Sea from 2012 to 2013. Catch species composition, the index of relative importance of each species, the Margalef richness index, the Shannon-Weiner diversity index, the Pielou evenness index, and the relative density of resources were calculated. We identified 663 species in four classes, 36 orders, 171 families, and 374 genera from catch resources in researched areas of the South China Sea. A total of 504 fish species were detected, which accounted for 76.0% of the catch. The number of dominant species in autumn was higher than that in spring, and the number of species captured in the SS was higher than that caught in the SN, with obvious seasonal fluctuations. All diversity indices were higher during the spring than those during the autumn because supplemental groups occurred in spring and many species moved to deep sea in autumn. However, all diversity indices in the SS were higher than those in the SN owing to greater effects of sea temperature and currents in the SS. Fisheries resources in the northern South China Sea were highly overfished, making the fishery resource smaller compared with historical fishery resource data. Fisheries resources in the SS were supposed to be reasonably exploited under nationally supported policies with better relative stock density. Stability of the South China Sea fishery is based on high species diversity; therefore, it is important to reasonably exploit the fisheries resources while protecting species diversity.

-----参考文献:---------------------------------------------------------------------------------------

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若需在您的论文中引用此文,请按以下格式著录参考文献:
中文著录格式: 李渊1,4,,张静2,4,,张然1,,宋普庆1,,钟指挥1,,王燕平1,,林龙山1,,窦硕增3.南沙群岛西南部海域和北部湾口海域底层游泳动物多样性.中国水产科学.2016;23(1):177-187.
英文著录格式: LI,Yuan1,4,,ZHANG,Jing2,4,,ZHANG,Ran1,,SONG,Puqing1,,ZHONG,Zhihui1,,WANG,Yanping1,,LIN,Longshan1,,DOU,Shuozeng3.Diversity of demersal nekton in the southwestern sea of the Nansha Islands and the mouth of Beibu Bay.No Title Settings.2016;23(1):177-187.

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