Spartina alterniflora invasion alters soil bacterial communities and enhances soil N 2 O emissions by stimulating soil denitrification in mangrove wetland

Chinese mangrove, an important ecosystem in coastal wetlands, is sensitive to the invasive alien species Spartina alterniflora. However, the effects of the S. alterniflora invasion on mangrove soil N O emissions and the underlying mechanisms by which emissions are affected have not been well studied...

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Bibliographic Details
Published in:The Science of the total environment 2019-02, Vol.653, p.231
Main Authors: Gao, Gui-Feng, Li, Peng-Fei, Zhong, Jia-Xin, Shen, Zhi-Jun, Chen, Juan, Li, Yun-Tao, Isabwe, Alain, Zhu, Xue-Yi, Ding, Qian-Su, Zhang, Shan, Gao, Chang-Hao, Zheng, Hai-Lei
Format: Article
Language:English
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Summary:Chinese mangrove, an important ecosystem in coastal wetlands, is sensitive to the invasive alien species Spartina alterniflora. However, the effects of the S. alterniflora invasion on mangrove soil N O emissions and the underlying mechanisms by which emissions are affected have not been well studied. In this study, the N O emitted from soils dominated by two typical native mangroves (i.e. Kandelia obovata: KO; Avicennia marina: AM), one invaded by S. alterniflora (SA), and one bare mudflat (Mud) were monitored at Zhangjiang Mangrove Estuary (where S. alterniflora is exotic). Together with soil biogeochemical properties, the potential denitrification rate and the composition of soil bacterial communities were determined simultaneously by NO tracer and high-throughput sequencing techniques, respectively. Our results showed that S. alterniflora invasion significantly (p 
ISSN:1879-1026
DOI:10.1016/j.scitotenv.2018.10.277