globalchange  > 气候变化与战略
DOI: 10.1038/s41561-021-00725-0
论文题名:
Effect of tectonic processes on biosphere–geosphere feedbacks across a convergent margin
作者: 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.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2021
卷: 14, 期:5
起始页码: 301
结束页码: 306
语种: 英语
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)
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169748
Appears in Collections:气候变化与战略

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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, Universidad Austral de Chile, Valdivia, Chile; Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN, United States; Observatorio Vulcanológico y Sismológico de Costa Rica, Universidad Nacional, Heredia, Costa Rica; Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, United States; Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Department of Biology, University of Naples “Federico II”, Naples, Italy; Division of Natural Sciences, Maryville College, Maryville, TN, United States

Recommended Citation:
Fullerton K.M.,Schrenk M.O.,Yücel M.,et al. Effect of tectonic processes on biosphere–geosphere feedbacks across a convergent margin[J]. Nature Geoscience,2021-01-01,14(5)
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