Journal of Tropical Oceanography ›› 2010, Vol. 29 ›› Issue (4): 118-124.doi: 10.11978/j.issn.1009-5470.2010.04.118cstr: 32234.14.j.issn.1009-5470.2010.04.118

• Marine biology • Previous Articles     Next Articles

Research on seasonal changes of the fish structure community in Nansha Islands waters

CHEN Wen-he1, LIU Xue-dong2, LU Huo-sheng1   

  1. 1. Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; 2. South China Sea Institute of Oceanology, CAS, Guangzhou 510301, China
  • Received:2008-04-14 Revised:2008-04-25 Online:2010-07-31 Published:2010-07-29
  • Contact: 刘学东。 E-mail:xxxdddlll@yahoo.com.cn
  • About author:陈文河(1975— ), 男, 广东省丰顺县人, 讲师, 硕士, 从事海洋渔业教学与研究。E-mail: chenwh@gdou.edu.cn
  • Supported by:

    农业部南海区渔政渔港监督管理局资助; 南沙渔捞日志统计暨资源分析研究项目(0608059)

Abstract:

The authors conduct research on the seasonal characteristics of fish communities structure and diversity based on the data of 445 fishing vessel log in the Nansha Islands waters in 2006. Around all survey areas there were total eight dominant species in four seasons, which were Sparidae, Carangidae, Trichiurus haumela, Nemipterus virgatas, Saurida elongate, Clupea harengus, Sardinella and Scomberomorus. Among them, Sparidae, Nemipterus virgatas and Trichiurus haumela were dominant around all four seasons, and the rest were only dominant in some seasons. In the Nansha Islands waters, there existed an increasing tendency from south to north for the Simpson index (D), and the Shannon–Wiener index (H') ranged from 2.5 to 4.5, and the Pielou index (J') turned out to be far from distinct. The similarity indices of species composition were relatively low during four seasons and in the three areas in the Nansha Islands waters. In the central Nansha Islands waters spatial distance of fish community structure was relatively far in four seasons. As for the seasonal migration of fish, or the fish’s movement, in the Nansha Islands waters, the strongest was in the south and the weakest was in the central, with the north in between.

Key words: Nansha Islands waters, structure of community, seasonal change, species diversity