生物多样性 ›› 2002, Vol. 10 ›› Issue (2): 175-180.doi: 10.17520/biods.2002022

所属专题: 红树林专题

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广西英罗港红树林潮沟鱼类多样性季节动态研究

何斌源, 范航清   

  1. 广西红树林研究中心,广西北海市 536007
  • 收稿日期:2001-06-25 修回日期:2001-10-29 出版日期:2002-05-20

A study on seasonal dynamics of species diversity of fishes in tidal waters of creeks within the mangroves of Yingluo Bay, Guangxi

HE Bin-Yuan, FAN Hang-Qing   

  1. Guangxi Mangrove Research Center,92 Changqingdong Road,Beihai,Guangxi 536007
  • Received:2001-06-25 Revised:2001-10-29 Online:2002-05-20

于1999年分4个季度采用拦网的方法对广西英罗港红树林潮沟潮水中鱼类的多样性进行了研究,共发现鱼类54种,隶属于29科44属。季度出现频数F=1~4的鱼类种数分别为27、8、11和8种。各季的优势种明显,但不同季节最大优势种不同,分别为:春季,斑(Clupanodon punctatus);夏季,前鳞骨鲻(Osteomugil ophuyseni);秋季,眶棘双边鱼(Ambassis gymnocephalus);冬季,鹿斑鲾(Leiognathus ruconius)。这些鱼类以暖水性种占绝对优势,在生态类型上以底层种类较多。各季节出现鱼类种数分别为:春季30种、夏季30种、秋季26种、冬季22种。夏季与秋季共有种最多,有20个种,这两季节间的相似性指数也最大,达55.6%。多样性指数D、H′、J值均以秋季最高。相对于林外水域,红树林潮沟鱼类群落的鱼类种数及3个指数均较高。跟热带红树林区相比,广西英罗港红树林潮沟鱼类群落的多样性低。

Based on seasonal investigations by block net in 1999, the dynamics of species diversity of fishes in creek tidal waters within mangrove swamps of Yingluo Bay, Guangxi, were studied. Fifty four species of fishes, belonging to 44 genera and 29 families, were recorded. The numbers of species occurring in one to four seasons were 27, 8, 11 and 8, respectively. The dominant species in each season were very obvious, but the most dominant species differed in different seasons. The most dominant species were Clupanodon punctatus in spring, Osteomugil ophuyseni in summer, Ambassis gymnocephalus in autumn and Leiognathus ruconius in winter. As to theirtemperature tolerances, the warm-water species absolutely occupied the largest percentage. Numbers of demersal species were greater than other ecological types. Thirty species in spring, 30 in summer, 26 in autumn, and 22 in winter were captured in the creek waters. Twenty species were shared between summer and autumn, which was higher than that between any other pairs of seasons. This was also reflected in the similarity index between the two seasons, which reached 55.6% for the summer autumn comparison. The indices of richness D , diversity H ′, and evenness J , were all higher in autumn than in other seasons. Numbers of fish species and the three biodiversity indices in creek tidal waters were all higher than that in mangrove fringed tidal waters. The species diversity of the fish community in these waters was low in comparison with that in tropical mangrove areas.

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