2014
DOI: 10.1038/ismej.2014.148
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Carbon flow from volcanic CO2 into soil microbial communities of a wetland mofette

Abstract: Effects of extremely high carbon dioxide (CO 2 ) concentrations on soil microbial communities and associated processes are largely unknown. We studied a wetland area affected by spots of subcrustal CO 2 degassing (mofettes) with focus on anaerobic autotrophic methanogenesis and acetogenesis because the pore gas phase was largely hypoxic. Compared with a reference soil, the mofette was more acidic (DpH B0.8), strongly enriched in organic carbon (up to 10 times), and exhibited lower prokaryotic diversity. It was… Show more

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Cited by 59 publications
(69 citation statements)
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References 74 publications
(92 reference statements)
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“…Both bacterial and archaeal 16S rDNA gene copy numbers ranged from 10 7 to 10 10 gdw -1 of soil (Figure 3a and 3b) without significant CO 2 -induced differences between CO 2 -exposed and reference samples (ANOVA, P > 0.05; Supplementary Table 6a). Similar results were detected for the CO 2 injection site PISCO 2 as well as for some natural CO 2 vents (Beaubien et al 2008;Frerichs et al 2013;Beulig et al 2015;Fernández-Montiel et al 2015). In contrast, decreasing microbial gene copy numbers by up to two orders of magnitude with increasing CO 2 at natural CO 2 vents were previously detected (Oppermann et al 2010;.…”
Section: Co 2 Impacts On Soil Microbial Abundancesupporting
confidence: 68%
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“…Both bacterial and archaeal 16S rDNA gene copy numbers ranged from 10 7 to 10 10 gdw -1 of soil (Figure 3a and 3b) without significant CO 2 -induced differences between CO 2 -exposed and reference samples (ANOVA, P > 0.05; Supplementary Table 6a). Similar results were detected for the CO 2 injection site PISCO 2 as well as for some natural CO 2 vents (Beaubien et al 2008;Frerichs et al 2013;Beulig et al 2015;Fernández-Montiel et al 2015). In contrast, decreasing microbial gene copy numbers by up to two orders of magnitude with increasing CO 2 at natural CO 2 vents were previously detected (Oppermann et al 2010;.…”
Section: Co 2 Impacts On Soil Microbial Abundancesupporting
confidence: 68%
“…Similar CH 4 production rates have been detected in previous studies at natural CO 2 vents with values between 0.001 and 0.1 µmol d -1 gdw -1 (Oppermann et al 2010;Beulig et al 2015). However, distinct increasing CH 4 production rates with increasing CO 2 concentration as described at natural sites could not be detected at the ASGARD site.…”
Section: Co 2 Impacts On Soil Microbial Activitysupporting
confidence: 66%
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“…An area of approximately 100 x 80 m of the Soos Nature Reserve is occupied by mofettes, where gas originates from active magma around 30 kilometres under the earth's surface and bubbles through the mud pools. The recent study of mofettes done by Beulig et al (2015) in the neighbouring area of Soos Nature Reserve showed that they could actually promote the soil colonization by acidophilic microorganisms as mofette soil tends to be more acidic than the adjacent ones. Unfortunately, it is very hard to make any conclusions about the actual colonization of Soos Nature Reserve by G. phlegrea, but strains belonging to CaM Group A could possibly exhibit a higher tolerance and adaptability for travelling longer distances.…”
Section: Discussionmentioning
confidence: 99%