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Chinese Journal of Applied Ecology ›› 2020, Vol. 31 ›› Issue (9): 3187-3193.doi: 10.13287/j.1001-9332.202009.037

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Community structure of macrozoobenthos and its relationship with environmental factors in Sanmen Bay, Zhejiang, China

LIANG Jing-xiang1, ZHOU Yong-dong1,2, WANG Zhong-ming1,2*, ZHANG Ya-zhou1,2, JIN Hai-wei1,2, XU Kai-da1,2   

  1. 1Institute of Marine and Fishery, Zhejiang Ocean University, Zhoushan 316021, Zhejiang, China;
    2Zhejiang Marine Fisheries Research Institute/Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds, Ministry of Agriculture/Zhejiang Province Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resources, Zhoushan 316021, Zhejiang, China
  • Received:2020-01-06 Accepted:2020-06-22 Online:2020-09-15 Published:2021-03-15
  • Contact: * E-mail: wangzhongming@zjou.edu.cn
  • Supported by:
    the National Key R&D Program of China (2019YFD0901204, 2019YFD0901205), the Key R&D Program of Zhejiang Province, China (2019C02056), and the Open Project of Key Laboratory of Sustainable Utilization Technology for Marine Fishery Resources, Zhejiang Province, China (01-269-2).

Abstract: To understand the status and dynamics of macrozoobenthos community in Sanmen Bay, we collected benthos samples by Agassiz trawl in November 2015, and February, May and August in 2016. The results showed that: 1) A total of 119 macrozoobenthos species were recorded, with main groups of fishes, crustaceans and molluscs, accounting for 79% of the total number of species. 2) The dominant species of macrozoobenthos throughout the year were Leptochela gracilis, Hyperacanthomysis longirostris and Amblychaeturichthys hexanema. The identity of dominant species changed significantly in different seasons. 3) The annual average biomass and density were 0.025 g·m-2 and 0.07 ind·m-2, respectively. 4) The Shannon’s diversity index of macrozoobenthos in Sanmen Bay varied from 2.21 to 3.18, the Margalef’s species richness index varied from 3.25 to 3.78, and the Pielou’s evenness index varied from 0.53 to 0.79. Results from abundance-biomass curve analysis showed that the community was moderately disturbed in spring and winter, and slightly disturbed in summer and autumn. Results from Canonical correspondence analysis showed that water depth, temperature, salinity, and pH were the most important environmental factors affecting macrozoobenthos community.

Key words: macrozoobenthos, biodiversity, canonical correspondence analysis, ABC curve, Sanmen Bay