DOI: 10.1016/j.soilbio.2020.107775
论文题名: Sonneratia apetala introduction alters methane cycling microbial communities and increases methane emissions in mangrove ecosystems
作者: Yu X. ; Yang X. ; Wu Y. ; Peng Y. ; Yang T. ; Xiao F. ; Zhong Q. ; Xu K. ; Shu L. ; He Q. ; Tian Y. ; Yan Q. ; Wang C. ; Wu B. ; He Z.
刊名: Soil Biology and Biochemistry
ISSN: 380717
出版年: 2020
卷: 144 语种: 英语
英文关键词: Kandelia obovata
; Mangrove
; Methane
; Methanogen
; Methanotroph
; Sonneratia apetala reforestation
Scopus关键词: Climate change
; Ecosystems
; Methane
; Methanogens
; Microorganisms
; Reforestation
; Sediments
; Sulfur compounds
; Kandelia obovata
; Mangrove
; Methanogenic community
; Methanotrophs
; Methyl-coenzyme M reductase
; Microbial community structures
; Particulate methane monooxygenase (pMOA)
; Sonneratia apetala
; Plants (botany)
; Kandelia obovata
; Methanosarcina
; Methylocystaceae
; Sonneratia apetala
英文摘要: Mangrove ecosystems are important methane (CH4) sources driven by microbial activities. Mangrove reforestation has been practiced as a strategy to restore the ecological functions of coastal environments. However, it remains unclear how introduced mangrove species impact their sediment microbial communities and CH4 emissions. Here we compared the changes in CH4 emissions, sediment properties, methanogenic and methanotrophic communities between two distinct mangrove habitats: one dominated by Kandelia obovata (KO, native species) and the other dominated by Sonneratia apetala (SA, introduced species). Compared with the KO sediment, the SA sediment had significantly (P < 0.05) higher levels of CH4 emissions (1643 vs. 593 μmol m−2 day−1), pH value (7.1 vs. 6.4), and ammonium (6.5 vs. 5.1 mg kg−1), but lower levels of salinity (3.8 vs. 11.9 ppt), total carbon (12.3 vs. 40.7 g kg−1), total nitrogen (2.3 vs. 4.5 g kg−1), and sulfate (1865 vs. 2959 mg L−1). Analysis of the methyl coenzyme M reductase (mcrA) and particulate methane monooxygenase (pmoA) genes showed that SA introduction led to a significant (P < 0.01) shift of sediment CH4-cycling microbial communities with increased alpha-diversity of methanogenic communities, and decreased abundances of methanotrophs compared with the KO sediment. Specifically, the relative abundance of Methanosarcina increased, while the relative abundance of type II methanotrophs decreased in the SA sediment, so the increased CH4 emissions in the SA sediment could be attributed to greater capacity of CH4 production and reduced CH4 consumption. Also, salinity, pH, total carbon, total nitrogen and sulfate were found to be important environmental factors shaping the CH4-cycling microbial community structure. This study provides insights into the impact of mangrove introduction on CH4-cycling microbial communities and CH4 emissions, which has very important implications about mangrove ecosystems in regulating global climate change. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158288
Appears in Collections: 气候变化与战略
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作者单位: Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, 510006, China; Swift Current Research and Development Centre, Agriculture and Agri-Food Canada, Swift Current, SK S9H 3X2, Canada; Department of Civil and Environmental Engineering, The University of Tennessee, Knoxville, TN 37996, United States; Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, 361102, China; South China Sea Institution, Sun Yat-sen University, Zhuhai, 519082, China; College of Agronomy, Hunan Agricultural University, Changsha, 410128, China
Recommended Citation:
Yu X.,Yang X.,Wu Y.,et al. Sonneratia apetala introduction alters methane cycling microbial communities and increases methane emissions in mangrove ecosystems[J]. Soil Biology and Biochemistry,2020-01-01,144