Journal of Tropical Oceanography ›› 2017, Vol. 36 ›› Issue (1): 41-47.doi: 10.11978/2016040CSTR: 32234.14.2016040

• Orginal Article • Previous Articles     Next Articles

Community structure of macrobenthos in summer in Daya Bay

Taoping YUAN1,2(), Hengxiang LI1, Lu LI1, Hui WANG1,2, Changping YANG3   

  1. 1. Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
    3. South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, China
  • Received:2016-04-19 Revised:2016-05-12 Online:2017-01-18 Published:2017-01-19
  • Supported by:
    National Natural Science Foundation of China (41206133)

Abstract:

The species composition, abundance, biomass and characteristics of macrobenthic fauna in Daya Bay were studied and the main factors that influence the distribution of benthic macrofauna were discussed, based on samples obtained from 32 stations in August 2013. A total of 153 macrobenthic species were identified, including 81 species of polychaete, 37 species of mollusk, 25 species of crustacean, 6 species of echinoderm and 4 species of others. Polychaetes represented the most dominant group and accounted for 52.94% of the total species. The macrobenthos was dominated by Listriolobus brevirostri and Paphia undulata. The average total density and average total biomass of the macrobenthos were 410 ind·m-2 and 84.83 g·m-2, respectively. Cluster analysis showed that the macrobenthic community could be divided into five groups with notable differences. Person correlation analysis was conducted between community characteristic indices and sediment factors, which showed that petroleum hydrocarbon in sediment in Daya Bay was main environmental factor affecting the benthic community structure in summer. BIOENV analysis showed that the benthic species abundance was closely related to organic matters and heavy metals such as lead, copper and cadmium.

Key words: Daya Bay, macrobenthos, community structure, abundance, biomass