TU Darmstadt / ULB / TUprints

Microbially promoted calcite precipitation in the pelagic redoxcline: Elucidating the formation of the turbid layer

Leberecht, Kerstin M. ; Ritter, Simon M. ; Lapp, Christian J. ; Klose, Lukas ; Eschenröder, Julian ; Scholz, Christian ; Kühnel, Sebastian ; Stinnesbeck, Wolfgang ; Kletzin, Arnulf ; Isenbeck‐Schröter, Margot ; Gescher, Johannes (2022):
Microbially promoted calcite precipitation in the pelagic redoxcline: Elucidating the formation of the turbid layer. (Publisher's Version)
In: Geobiology, 20 (4), pp. 498-517. John Wiley & Sons, e-ISSN 1472-4669,
DOI: 10.26083/tuprints-00022442,
[Article]

[img] Text
GBI_GBI12492.pdf
Copyright Information: CC-BY-NC-ND 4.0 International - Creative Commons, Attribution NonCommercial, NoDerivs.

Download (11MB)
Item Type: Article
Origin: Secondary publication DeepGreen
Status: Publisher's Version
Title: Microbially promoted calcite precipitation in the pelagic redoxcline: Elucidating the formation of the turbid layer
Language: English
Abstract:

Large bell‐shaped calcite formations called "Hells Bells" were discovered underwater in the stratified cenote El Zapote on the Yucatán Peninsula, Mexico. Together with these extraordinary speleothems, divers found a white, cloudy turbid layer into which some Hells Bells partially extend. Here, we address the central question if the formation of the turbid layer could be based on microbial activity, more specifically, on microbially induced calcite precipitation. Metagenomic and metatranscriptomic profiling of the microbial community in the turbid layer, which overlaps with the pelagic redoxcline in the cenote, revealed chemolithoautotrophic Hydrogenophilales and unclassified β‐Proteobacteria as the metabolic key players. Bioinformatic and hydrogeochemical data suggest chemolithoautotrophic oxidation of sulfide to zero‐valent sulfur catalyzed by denitrifying organisms due to oxygen deficiency. Incomplete sulfide oxidation via nitrate reduction and chemolithoautotrophy are both proton‐consuming processes, which increase the pH in the redoxcline favoring authigenic calcite precipitation and may contribute to Hells Bells growth. The observed mechanism of microbially induced calcite precipitation is potentially applicable to many other stagnant sulfate‐rich water bodies.

Journal or Publication Title: Geobiology
Volume of the journal: 20
Issue Number: 4
Place of Publication: Darmstadt
Publisher: John Wiley & Sons
Uncontrolled Keywords: biogeochemistry, chemolithoautotrophy, microbially induced calcite precipitation, redoxcline, sulfide oxidation
Classification DDC: 500 Naturwissenschaften und Mathematik > 570 Biowissenschaften, Biologie
900 Geschichte und Geografie > 910 Geografie, Reisen
Divisions: 10 Department of Biology > Sulfur Biochemistry and Microbial Bioenergetics
Date Deposited: 07 Oct 2022 13:12
Last Modified: 11 Oct 2022 09:22
DOI: 10.26083/tuprints-00022442
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-224429
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/22442
PPN: 500224447
Export:
Actions (login required)
View Item View Item