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Trias, R.* ; Ménez, B.* ; le Campion, P.* ; Zivanovic, Y.* ; Lecourt, L.* ; Lecoeuvre, A.* ; Schmitt-Kopplin, P. ; Uhl, J. ; Gislason, S.R.* ; Alfreðsson, H.A.* ; Mesfin, K.G.* ; Snæbjörnsdóttir, S.* ; Aradóttir, E.S.* ; Gunnarsson, I.* ; Matter, J.M.* ; Stute, M.* ; Oelkers, E.H.* ; Gérard, E.*

High reactivity of deep biota under anthropogenic CO² injection into basalt.

Nat. Commun. 8:1063 (2017)
Publ. Version/Full Text Research data DOI PMC
Open Access Gold
Creative Commons Lizenzvertrag
Basalts are recognized as one of the major habitats on Earth, harboring diverse and active microbial populations. Inconsistently, this living component is rarely considered in engineering operations carried out in these environments. This includes carbon capture and storage (CCS) technologies that seek to offset anthropogenic CO2 emissions into the atmosphere by burying this greenhouse gas in the subsurface. Here, we show that deep ecosystems respond quickly to field operations associated with CO2 injections based on a microbiological survey of a basaltic CCS site. Acidic CO2-charged groundwater results in a marked decrease (by ~ 2.5-4) in microbial richness despite observable blooms of lithoautotrophic iron-oxidizing Betaproteobacteria and degraders of aromatic compounds, which hence impact the aquifer redox state and the carbon fate. Host-basalt dissolution releases nutrients and energy sources, which sustain the growth of autotrophic and heterotrophic species whose activities may have consequences on mineral storage.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Dissolved Organic-matter; Ribosomal-rna Sequences; Fe-oxidizing Bacteria; Maximum-likelihood; Enrichment Culture; Saline Aquifers; Carbon Storage; Iron Oxidation; Sw-iceland; Sp Nov.
ISSN (print) / ISBN 2041-1723
e-ISSN 2041-1723
Journal Nature Communications
Quellenangaben Volume: 8, Issue: 1, Pages: , Article Number: 1063 Supplement: ,
Publisher Nature Publishing Group
Publishing Place London
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Research Unit BioGeoChemistry and Analytics (BGC)