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Spatial and temporal variation in microbial diversity and community structure in a contaminated Mangrove Wetland

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journal contribution
posted on 2020-01-01, 00:00 authored by J Ma, T Zhou, C Xu, D Shen, S Xu, Chu Xia LinChu Xia Lin
Field and laboratory investigations were conducted to characterize bacterial diversity and community structure in a badly contaminated mangrove wetland adjacent to the metropolitan area of a megacity in subtropical China. Next-generation sequencing technique was used for sequencing the V4–V5 region of the 16s rRNA gene on the Illumina system. Collectively, Proteobacteria, Chloroflexi, Planctomycetes, Actinobacteria and Bacteroidetes were the predominant phyla identified in the investigated soils. A significant spatial variation in bacterial diversity and community structure was observed for the investigated mangrove soils. Heavy metal pollution played a key role in reducing the bacterial diversity. The spatial variation in soil-borne heavy metals shaped the spatial variation in bacterial diversity and community structure in the study area. Other environmental factors such as total carbon and total nitrogen in the soils that are affected by seasonal change in temperature could also influence the bacterial abundance, diversity and community structure though the temporal variation was relatively weaker, as compared to spatial variation. The bacterial diversity index was lower in the investigated site than in the comparable reference site with less contaminated status. The community structure in mangrove soils at the current study site was, to a remarkable extent, different from those in the tropical mangrove wetlands around the world.

History

Journal

Applied Sciences (Switzerland)

Volume

10

Article number

ARTN 5850

Pagination

1 - 15

Location

Basel, Switzerland

Open access

  • Yes

eISSN

2076-3417

Language

English

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2020, the authors

Issue

17

Publisher

MDPI