Journal of Marine Sciences ›› 2016, Vol. 34 ›› Issue (4): 84-91.DOI: 10.3969/j.issn.1001-909X.2016.04.011

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Temporal and spatial dynamics of bacterioplankton biomass and the influenced factors in Shenzhen Bay

CHEN Shu-wen1, SONG Jun-ting1, LEI Cheng-long1, WANG Xiang1, CAI Zhong-hua*2   

  1. 1. School of Life Science, Tsinghua University, Beijing 100084, China;
    2. Division of Marine Science and Technology, Graduate School at Shenzhen of Tsinghua University, Shenzhen 518055, China
  • Received:2016-05-05 Revised:2016-06-07 Online:2016-12-15 Published:2022-11-24

Abstract: In order to study the extent of eutrophication in Shenzhen Bay, spatial and temporal distributions of bacterioplankton biomass were seasonally investigated at three sampling stations in Shenzhen Bay in May, June, September, October and December in 2015 and March in 2016. The seasonal bacterioplankton biomass ranged from 4.90×10-2 μg·mL-1to 86.90×10-2 μg·mL-1, with an annual average of 3.14×10-1 μg·mL-1. The bacterioplankton biomass was the greatest in winter (5.98×10-1 μg·mL-1), followed by autumn (3.02×10-1 μg·mL-1), summer (2.79×10-1 μg·mL-1), and spring (7.52×10-2 μg·mL-1) in turn, revealing different seasonal patterns in this bay. The bacterioplankton biomass decreased horizontally from the center of the bay to the mouth of the bay and the top of the bay, with a higher biomass at station near the area for cultivation. The bacterioplankton biomass was significantly po sitively relatived to NO-2-N and NH+4-N in Shenzhen Bay. The seasonal abundance of bacterioplankton ranged from 2.45×106 ind·mL-1 to 43.50×106 ind·mL-1, with an annual average of 1.57×107 ind·mL-1, implying serious eutrophication in this bay and revealing a decreasing pattern from the center to the mouth and the top of the bay.

Key words: Shenzhen Bay, bacterioplankton, biomass, temporal and spatial variation, affecting factor

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