Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15785 |
Disproportionate microbial responses to decadal drainage on a Siberian floodplain | |
Min Jung Kwon; Binu M. Tripathi; Mathias Gö; ckede; Seung Chul Shin; Nu Ri Myeong; Yoo Kyung Lee; Mincheol Kim | |
2021-07-16 | |
发表期刊 | Global Change Biology |
出版年 | 2021 |
英文摘要 | Permafrost thaw induces soil hydrological changes which in turn affects carbon cycle processes in the Arctic terrestrial ecosystems. However, hydrological impacts of thawing permafrost on microbial processes and greenhouse gas (GHG) dynamics are poorly understood. This study examined changes in microbial communities using gene and genome-centric metagenomics on an Arctic floodplain subject to decadal drainage, and linked them to CO2 and CH4 flux and soil chemistry. Decadal drainage led to significant changes in the abundance, taxonomy, and functional potential of microbial communities, and these modifications well explained the changes in CO2 and CH4 fluxes between ecosystem and atmosphere—increased fungal abundances potentially increased net CO2 emission rates and highly reduced CH4 emissions in drained sites corroborated the marked decrease in the abundance of methanogens and methanotrophs. Interestingly, various microbial taxa disproportionately responded to drainage: Methanoregula, one of the key players in methanogenesis under saturated conditions, almost disappeared, and also Methylococcales methanotrophs were markedly reduced in response to drainage. Seven novel methanogen population genomes were recovered, and the metabolic reconstruction of highly correlated population genomes revealed novel syntrophic relationships between methanogenic archaea and syntrophic partners. These results provide a mechanistic view of microbial processes regulating GHG dynamics in the terrestrial carbon cycle, and disproportionate microbial responses to long-term drainage provide key information for understanding the effects of warming-induced soil drying on microbial processes in Arctic wetland ecosystems. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
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/333756 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Min Jung Kwon,Binu M. Tripathi,Mathias Gö,et al. Disproportionate microbial responses to decadal drainage on a Siberian floodplain[J]. Global Change Biology,2021. |
APA | Min Jung Kwon.,Binu M. Tripathi.,Mathias Gö.,ckede.,Seung Chul Shin.,...&Mincheol Kim.(2021).Disproportionate microbial responses to decadal drainage on a Siberian floodplain.Global Change Biology. |
MLA | Min Jung Kwon,et al."Disproportionate microbial responses to decadal drainage on a Siberian floodplain".Global Change Biology (2021). |
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