Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13764 |
Methane emission from feather moss stands | |
Kanaparthi, Dheeraj1,2; Reim, Andreas1; Martinson, Guntars O.1; Pommerenke, Bianca1; Conrad, Ralf1 | |
2017-11-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany |
英文摘要 | Data from remote sensing and Eddy towers indicate that forests are not always net sinks for atmospheric CH4. However, studies describing specific sources within forests and functional analysis of microorganisms on sites with CH4 turnover are scarce. Feather moss stands were considered to be net sinks for carbon dioxide, but received little attention to their role in CH4 cycling. Therefore, we investigated methanogenic rates and pathways together with the methanogenic microbial community composition in feather moss stands from temperate and boreal forests. Potential rates of CH4 emission from intact moss stands (n = 60) under aerobic conditions ranged between 19 and 133 pmol CH4 h(-1) gdw(-1). Temperature and water content positively influenced CH4 emission. Methanogenic potentials determined under N-2 atmosphere in darkness ranged between 22 and 157 pmol CH4 h(-1) gdw(-1). Methane production was strongly inhibited by bromoethane sulfonate or chloroform, showing that CH4 was of microbial origin. The moss samples tested contained fluorescent microbial cells and between 10(4) and 10(5) copies per gram dry weight moss of the mcrA gene coding for a subunit of the methyl CoM reductase. Archaeal 16S rRNA and mcrA gene sequences in the moss stands were characteristic for the archaeal families Methanobacteriaceae and Methanosarcinaceae. The potential methanogenic rates were similar in incubations with and without methyl fluoride, indicating that the CH4 was produced by the hydrogenotrophic rather than aceticlastic pathway. Consistently, the CH4 produced was depleted in C-13 in comparison with the moss biomass carbon and acetate accumulated to rather high concentrations (3-62 mM). The delta C-13 of acetate was similar to that of the moss biomass, indicating acetate production by fermentation. Our study showed that the feather moss stands contained active methanogenic microbial communities producing CH4 by hydrogenotrophic methanogenesis and causing net emission of CH4 under ambient conditions, albeit at low rates. |
英文关键词 | acetogenesis feather moss mcrA methane emission methanogenesis methanogenic archaea stable carbon isotope |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000412322700036 |
WOS关键词 | METHANOGENIC ARCHAEAL COMMUNITY ; RICE FIELD SOIL ; FOREST SOILS ; PADDY SOIL ; TEMPERATURE LIMITATION ; ISOTOPE FRACTIONATION ; HYLOCOMIUM-SPLENDENS ; ANAEROBIC CONDITIONS ; LIGNIN DEGRADATION ; BOREAL FOREST |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/16986 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Max Planck Inst Terr Microbiol, Dept Biogeochem, Karl von Frisch Str 10, D-35043 Marburg, Germany; 2.Helmholtz Zentrum, Inst Groundwater Ecol, Ingolstadter Landstr 1, D-85764 Neuherberg, Germany |
推荐引用方式 GB/T 7714 | Kanaparthi, Dheeraj,Reim, Andreas,Martinson, Guntars O.,et al. Methane emission from feather moss stands[J]. GLOBAL CHANGE BIOLOGY,2017,23(11). |
APA | Kanaparthi, Dheeraj,Reim, Andreas,Martinson, Guntars O.,Pommerenke, Bianca,&Conrad, Ralf.(2017).Methane emission from feather moss stands.GLOBAL CHANGE BIOLOGY,23(11). |
MLA | Kanaparthi, Dheeraj,et al."Methane emission from feather moss stands".GLOBAL CHANGE BIOLOGY 23.11(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论