Total CO2 output and carbon origin discharged from Rincón de Parangueo Maar (México)

Paz, Mariana Patricia Jácome; Inguaggiato, Claudio; Levresse, Gilles; Robidoux, Philippe; Granados, Hugo Delgado; Tassi, Franco

doi:10.1016/j.gexplo.2020.106558

Cited by 1 publication

(4 citation statements)

References 56 publications

(79 reference statements)

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“…Several orders of methanogenic Archaea were recognised within RP microbial communities, giving way to the possibility of biogenic methane gas production as proposed by Paz‐Jacome et al. (2020), especially in RP sediments. Furthermore, the anaerobic oxidation of methane (AOM) carried out by anaerobic methane‐oxidising Archaea (ANME) could be an important step in the methane cycle inside RP because they were found mainly in Sediment samples.…”

Section: Discussionmentioning

confidence: 81%

“…The flux gas output measured for methane is between 2.1 and 1577 g/m 2 /day, whereas for carbon dioxide it is 10.6 ton/day, reported by Paz‐Jacome et al. (2020). Notably, inside the soda ponds, it is common to see isolated gas bubbles suggesting that gases are continuously expelled to the surface.…”

Section: Discussionmentioning

confidence: 82%

“…The carbon fixation metabolism is supported by the secondary consumption of the released magmatic carbon dioxide by carbonatogenic phylotypes. The Na + –HCO 3 − rich water in the ponds may be produced/enhanced by a combination of the silicate hydrolysis of volcanic rocks and the high partial input of magmatic carbon dioxide (e.g., Aranda‐Gómez et al., 2013; Paz‐Jacome et al., 2020). These conditions could explain the elevated carbon fixation metabolism recognised in this environment.…”

Section: Discussionmentioning

confidence: 99%

“…The carbon fixation metabolism is supported by the secondary consumption of the released magmatic carbon dioxide by carbonatogenic phylotypes. The Na + -HCO 3 − rich water in the ponds may be produced/enhanced by a combination of the silicate hydrolysis of volcanic rocks and the high partial input of magmatic carbon dioxide (e.g.,Aranda-Gómez et al, 2013;Paz-Jacome et al, 2020).These conditions could explain the elevated carbon fixation metabolism recognised in this environment. Faults and fractures distributed in the crater may act as preferential conducts for degassing.The dominant phyla in Microbialite samples are represented by Thermoplasmatota, a phylotype associated with hydrothermal springs(Schouten et al, 2007), emphasising their significance in the present-day degassing of the crater.…”

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confidence: 84%

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Geomicrobiology of the Rincon de Parangueo maar crater: Exploring the link between an evolving extreme environment and its potential metabolic diversity

Sánchez‐Sánchez,

Cerca,

Moguel

et al. 2023

Freshwater Biology

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Rincon de Parangueo (RP) is a Quaternary maar crater located in the Michoacan‐Guanajuato Volcanic Field in central Mexico. Like other volcanic craters in the region, the central part was occupied by an endorheic lacustrine system. As a consequence of extensive groundwater extraction, the perennial lake started a gradual desiccation process and now the remnant ponds host a highly saline–alkaline ecosystem. The stratigraphic record indicates an exceptional and long‐term sedimentation of carbonate microbialites. Previous studies based on the 16S rRNA gene have shown that microbial communities have a widespread presence in the crater at the microbialites, the remaining saline ponds, superficial soils and below the surface. To understand the possible role of the microbial communities that generate these biogeological structures, novel analytical methods to resolve the amplicon datasets and their microbial metabolic potential were used. We describe in detail the relationship between the microbial communities, the evolution of physicochemical parameters, and carbonate morphology, in four micro‐environments. A 16S rRNA gene sequencing dataset from previous publications was re‐analysed using an ASV‐based bioinformatic pipeline to identify new insights into the microbial assemblage. Finally, a taxon‐based metabolic profile was used to predict the potential metabolic contribution of the prokaryotic community. Results indicated a refinement in terms of community composition using the ASV‐based bioinformatic methods. Functional profiling through 16S rRNA gene‐based analysis suggested metabolisms associated with carbonate precipitation, indicating a broad potential for microbially mediated carbonate precipitation (e.g., carbon fixation and photosynthesis). The possibility of biogenic methane gas production by methanogenic microorganisms was recognised, supporting the estimated flow of methane on the surface soils. The lacustrine evolution over the last years and the extreme physicochemical characteristics of RP have an impact on the microbial community structure. Prokaryotic community and metabolic potential results from RP coincide with the diversity and abundance of microbial communities and functional metabolisms reported from other microbialite‐forming lakes along the Trans Mexican Volcanic Belt. The identification of important possible phylotypes involved in carbonate precipitation might be an important factor in considering RP microbialites as active calcifying entities. These findings provide novel insights into the potential key role of metabolic pathways driving the process of carbonate precipitation inside RP and evidence of its importance as a microbial biodiversity hotspot in Mexico.

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Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 82%