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Chinese Journal of Applied Ecology ›› 2021, Vol. 32 ›› Issue (1): 342-348.doi: 10.13287/j.1001-9332.202101.039

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Spatial niches of dominant zooplankton species in Yueqing Bay, Zhejiang Province

ZHANG Ya-zhou1, ZHANG Lin-lin1, YIN Rui1, LUAN Hui-ni2, LIU Zhi-jian3, CHEN Jian3*, JIANG Ri-jin1   

  1. 1Ministry of Agriculture Key Research Station for Fisheries Resources of Main Fishing Ground, Key Research Station of Sustainable Utilization for Marine Fisheries Resources, Zhejiang Institute of Marine Fisheries Research, Zhoushan 316021, Zhejiang, China;
    2Weihai Ocean Vocational College, Weihai 264300,Shandong,China;
    3Wenzhou Institute of Fishery Technique Spreading Station, Wenzhou 325000, Zhejiang, China
  • Received:2020-09-20 Accepted:2020-10-22 Online:2021-01-15 Published:2021-07-15
  • Contact: * E-mail: 103602542@qq.com
  • Supported by:
    Public Project of Zhejiang Province (LGN20C190012), the National Key R&D Program of China (2018YFD0900904,2018YFC1406300), the Zhejiang Province Key R&D Program (2019C02056) and the Yueqing Bay Marine Resources Survey.

Abstract: The index of dominance (S), average crowding (X*), niche breadth (Bi), and niche overlap (Qik ) of dominant zooplankton species were calculated using data collected from four zooplankton surveys from May 2016 to February 2017 in Yueqing Bay, Zhejiang Province. The results showed that there were 17 dominant zooplankton species (with S>0.02). The niche breadth values of those dominant species differed greatly and were positively correlated with S. The niche overlaps of zooplanktons were extremely low. The total amount of species pairs with niche overlap higher than 0.6 (Qik>0.6) were 25 in Yueqing Bay, which represented 18.4% of the total pairs. Results from the redundancy analysis showed that the distribution of dominant zooplankton species was mainly affected by temperature and salinity, which caused ecological differentiation of zooplankton species.

Key words: Yueqing Bay, niche breadth, niche overlap, environmental factor