气候变化领域集成服务门户(CCPortal): Effect of tectonic processes on biosphere–geosphere feedbacks across a convergent margin

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DOI	10.1038/s41561-021-00725-0
	Effect of tectonic processes on biosphere–geosphere feedbacks across a convergent margin
	Fullerton K.M.; Schrenk M.O.; Yücel M.; Manini E.; Basili M.; Rogers T.J.; Fattorini D.; Di Carlo M.; d’Errico G.; Regoli F.; Nakagawa M.; Vetriani C.; Smedile F.; Ramírez C.; Miller H.; Morrison S.M.; Buongiorno J.; Jessen G.L.; Steen A.D.; Martínez M.; de Moor J.M.; Barry P.H.; Giovannelli D.; Lloyd K.G.
发表日期	2021
ISSN	17520894
起始页码	301
结束页码	306
卷号	14 期号:5
英文摘要	The subsurface is among Earth’s largest biomes, but the extent to which microbial communities vary across tectonic plate boundaries or interact with subduction-scale geological processes remains unknown. Here we compare bacterial community composition with deep-subsurface geochemistry from 21 hot springs across the Costa Rican convergent margin. We find that cation and anion compositions of the springs reflect the dip angle and position of the underlying tectonic structure and also correlate with the bacterial community. Co-occurring microbial cliques related to cultured chemolithoautotrophs that use the reverse tricarboxylic acid cycle (rTCA) as well as abundances of metagenomic rTCA genes correlate with concentrations of slab-volatilized carbon. This, combined with carbon isotope evidence, suggests that fixation of slab-derived CO2 into biomass may support a chemolithoautotrophy-based subsurface ecosystem. We calculate that this forearc subsurface biosphere could sequester 1.4 × 109 to 1.4 × 1010 mol of carbon per year, which would decrease estimates of the total carbon delivered to the mantle by 2 to 22%. Based on the observed correlations, we suggest that distribution and composition of the subsurface bacterial community are probably affected by deep tectonic processes across the Costa Rican convergent margin and that, by sequestering carbon volatilized during subduction, these chemolithoautotrophic communities could in turn impact the geosphere. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
英文关键词	biosphere; carbon dioxide; carbon isotope; concentration (composition); convergent margin; geochemistry; microbial community; tectonic plate; tectonic structure; Costa Rican Margin; Pacific Ocean; Bacteria (microorganisms)
语种	英语
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206892
作者单位	Microbiology Department, University of Tennessee, Knoxville, TN, United States; Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, United States; Institute of Marine Sciences, Middle East Technical University, Erdemli, Turkey; Institute of Marine Biological Resources and Biotechnologies, National Research Council, Ancona, Italy; Dipartimento di Scienze della Vita e dell’Ambiente, Università Politecnica delle Marche, Ancona, Italy; Consorzio Nazionale Interuniversitario Scienze del Mare, Rome, Italy; Earth-Life Science Institute, Tokyo Institute for Technology, Tokyo, Japan; Department of Biochemistry and Microbiology, Rutgers University, New Brunswick, NJ, United States; Department of Marine and Coastal Science, Rutgers University, New Brunswick, NJ, United States; Servicio Geológico Ambiental, Heredia, Costa Rica; Earth and Planets Laboratory, Carnegie Institution for Science, Washington, DC, United States; Instituto de Ciencias Marinas y Limnológicas, Univers...
推荐引用方式 GB/T 7714	Fullerton K.M.,Schrenk M.O.,Yücel M.,等. Effect of tectonic processes on biosphere–geosphere feedbacks across a convergent margin[J],2021,14(5).
APA	Fullerton K.M..,Schrenk M.O..,Yücel M..,Manini E..,Basili M..,...&Lloyd K.G..(2021).Effect of tectonic processes on biosphere–geosphere feedbacks across a convergent margin.Nature Geoscience,14(5).
MLA	Fullerton K.M.,et al."Effect of tectonic processes on biosphere–geosphere feedbacks across a convergent margin".Nature Geoscience 14.5(2021).