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@ARTICLE{Vignale:638702,
author = {Vignale, Federico Agustin and Sánchez-García, Laura and
Carrizo, Daniel and Castillejos Sepúlveda, Andrea and
Taubner, Heidi and Oriolo, Sebastián and Mitchell, Alex L.
and Turjanski, Adrián G. and Klatt, Judith M. and Finn,
Robert D. and Garcia-Alai, Maria M. and Farías, María E.},
title = {{S}easonal biogeochemical variations in a modern
microbialite reef under early {E}arth-like conditions},
journal = {Communications earth $\&$ environment},
volume = {6},
number = {1},
issn = {2662-4435},
address = {London},
publisher = {Springer Nature},
reportid = {PUBDB-2025-04166},
pages = {751},
year = {2025},
abstract = {Microbialites are organosedimentary structures that have
existed since the Precambrian and have endured through
geological time, serving as archives of Earth’s
environmental evolution. Today, they persist in only a few
environments markedly different from those in which they
first arose. Here, we report a modern microbialite reef in
Laguna Pozo Bravo (Puna region, Argentina), exposed to high
radiation, low oxygen pressure, and volcanic inputs
reminiscent of early Earth. Through physicochemical,
mineralogical, spectroscopic, electron microscopy, and
metagenomic analyses, we identified diverse microbial
communities with metabolic capacities that induce
mineralisation. Seasonal environmental fluctuations drive
cyclical changes in community composition, producing
potential mineralisation patterns. Our findings suggest that
carbon fixation and the metabolic drivers of alkalinity in
microbialites may have evolved over time. Moreover, the
variability in prokaryotic compositions among modern
microbialites demonstrates that carbonate precipitation is
governed by metabolic potential rather than taxonomy,
reinforcing their role as dynamic records of environmental
conditions.},
cin = {CSSB-CF-SPC},
ddc = {550},
cid = {I:(DE-H253)CSSB-CF-SPC-20210520},
pnm = {899 - ohne Topic (POF4-899)},
pid = {G:(DE-HGF)POF4-899},
experiment = {EXP:(DE-H253)SPC-20250101},
typ = {PUB:(DE-HGF)16},
doi = {10.1038/s43247-025-02764-6},
url = {https://bib-pubdb1.desy.de/record/638702},
}