The Response of Bacterial Community Structure to Ecological Environment Changes in Daya Bay between Winter and Spring

The distribution patterns of the bacterial biomass and its diversity were investigated in Daya Bay in winter and spring 2008. Based on the acridine orange direct count, the mean bacterial biomass (0.31 +/- 0.20 mu g L-1)in spring was 1.5 times more than that (0.21 +/- 0.07 mu g L-1) in winter. Spati...

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Bibliographic Details
Published in:Journal of Coastal Research
Main Authors: Feng, Jing-Bin, Ren, Chun-Hua, Luo, Peng, Yan, Yan, Jiang, Xiao, Hu, Chao-Qun
Format: Report
Language:English
Published: COASTAL EDUCATION & RESEARCH FOUNDATION 2018
Subjects:
Environmental Sciences & Ecology
Physical Geography
Geology
Environmental Sciences
Geography
Physical
Geosciences
Multidisciplinary
NEIGHBOR-JOINING METHOD
DEEP-SEA SEDIMENTS
VERTICAL-DISTRIBUTION
NUTRIENT LIMITATION
SERRATIA-MARCESCENS
NORTH-ATLANTIC
SP-NOV
; BACTERIOPLANKTON
BIOMASS
PHYTOPLANKTON
North Atlantic
Online Access:http://ir.gig.ac.cn/handle/344008/37374
https://doi.org/10.2112/SI84-003.1
Description
Summary:The distribution patterns of the bacterial biomass and its diversity were investigated in Daya Bay in winter and spring 2008. Based on the acridine orange direct count, the mean bacterial biomass (0.31 +/- 0.20 mu g L-1)in spring was 1.5 times more than that (0.21 +/- 0.07 mu g L-1) in winter. Spatially it showed the trend that the mean bacterial biomass at station surface and bottom layers in the south of the bay was higher than in the north of the bay. The results based on PCR-DGGE and DNA sequence analysis showed that the Proteobacteria group dominated in bacterial communities of Daya Bay and other groups included the Cyanobacteria, Actinobacteria and Verrucomicrobia. The mean bacterial apparent species richness (No. of DGGE bands) was distinctly higher in winter (18) than in spring (12). It was concluded that phytoplankton controlled bacterioplankton biomass by utilizing dissolved inorganic nitrogen (DIN) in winter and spring. The observed seasonal variations of bacterioplankton community composition in Daya Bay was mainly associated with the high-in-winter-and low- in-spring availability of nutrients like DIN and SiO32--Si.

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