Biodiv Sci ›› 2013, Vol. 21 ›› Issue (5): 547-553.DOI: 10.3724/SP.J.1003.2013.07050

• Orginal Article • Previous Articles     Next Articles

Biodiversity of the benthic shellfish in the intertidal zone of the Liusha Bay, Leizhou Peninsula

Sheng Ke1, Yuchun Shen2,*(), Enyi Xie2, Zailiang Li2   

  1. 1 Analytical and Testing Center of Guangdong Ocean University, Zhanjiang, Guangdong 524088
    2 Key Laboratory of Aquaculture in South China Sea for Aquatic Economic Animals, Guangdong Ocean University, Zhanjiang, Guangdong 524088
  • Received:2013-03-18 Accepted:2013-03-28 Online:2013-09-20 Published:2013-10-08
  • Contact: Shen Yuchun

Abstract:

An analysis was conducted of species composition, spatial-temporal distribution and biodiversity of benthic shellfish in the intertidal zone of the Liusha Bay, Leizhou Peninsula, where shellfish are intensively framed. Areas sampled in 2008 and 2009 included seagrass beds (SGB), cultured shellfish areas (CSA) and non-cultured areas (NCA). We found (1) 97 shellfish species, of which 58 occurred in the NCA and 49 in the SGB. Cerithidea cingulata and Batillaria zonalis were dominant species in all three areas. (2) In the SGB and NCA, biomass and abundance of shellfish reached highest values in September and lowest in May. In the SGB and CSA, highest biomass and abundance of shellfish occurred in the high-tidal zone, followed by the mid-tidal zone and low-tidal zone. (3) Highest Margalef richness index and Shannon-Wiener index values were estimated for the NCA while the highest Pielou evenness index values was obtained for the CSA. Based on an analysis of K-dominance curves, the CSA was most severely disturbed. In summary, an unstable community structure and reduced biodiversity of shellfish was evident in the intertidal zone of the SGB and CSA. Improvements to both community structure and biodiversity of benthic shellfish in these areas are likely to result from reducing the intensity of shellfish culturing and extending seagrass coverage and mix-typed sediment.

Key words: distribution, biodiversity, biomass, abundance, benthic shellfishes