Dick, Jeffrey M Boyer, Grayson M Canovas, Peter A 3rd Shock, Everett L
Published in
Geobiology
Thermodynamic characterization of the relative stabilities of chemical compounds is a pillar of conceptual models in various fields of geosciences. Analogous models applied to genomes can yield new information about the relationship between genomes and their geochemical environments. In this perspective article, we present a chemical and thermodyna...
Cheng, Kuan Li, Han Yuan, Xiu Yin, Yunlu Chen, Dandan Wang, Ying Li, Xiaomin Chen, Guojun Li, Fangbai Peng, Chao
...
Published in
Geobiology
Although nitrate-reducing Fe(II) oxidizing (NRFO) bacteria can grow sustainably in natural environments, numerous laboratory studies suggested that cell encrustation-induced metabolism limitations and cell death occurred more seriously in the absence of natural minerals. Hence, a study on how natural minerals could affect NRFO is warranted. This st...
Mancuso, Arianna Yam, Ruth Prada, Fiorella Stagioni, Marco Goffredo, Stefano Shemesh, Aldo
Published in
Geobiology
Stable isotopes in mollusc shells, together with variable growth rates and other geochemical properties, can register different environmental clues, including seawater temperature, salinity and primary productivity. However, the strict biological control over the construction of biominerals exerted by many calcifying organisms can constrain the use...
Gonzalez-Nayeck, Ana C Mohr, Wiebke Tang, Tiantian Sattin, Sarah Parenteau, M Niki Jahnke, Linda L Pearson, Ann
Published in
Geobiology
In modern ecosystems, the carbon stable isotope (δ13 C) ratios of consumers generally conform to the principle "you are what you eat, +1‰." However, this metric may not apply to microbial mat systems where diverse communities, using a variety of carbon substrates via multiple assimilation pathways, live in close physical association and phagocytosi...
Manzuk, Ryan A Maloof, Adam C Kaandorp, Jaap A Webster, Mark
Published in
Geobiology
The rapid origination and diversification of major animal body plans during the early Cambrian coincide with the rise of Earth's first animal-built framework reefs. Given the importance of scleractinian coral reefs as ecological facilitators in modern oceans, we investigate the impact of archaeocyathan (Class Archaeocyatha) reefs as engineered ecos...
Nguyen, Suong T T Vardeh, David P Nelson, Tiffanie M Pearson, Leanne A Kinsela, Andrew S Neilan, Brett A
Published in
Geobiology
Microbialites are sedimentary rocks created in association with benthic microorganisms. While they harbour complex microbial communities, Cyanobacteria perform critical roles in sediment stabilisation and accretion. Microbialites have been described from permanent and ephemeral saline lakes in South Australia; however, the microbial communities tha...
Baumgartner, Raphael J Hu, Siyu Van Kranendonk, Martin J Verrall, Michael
Published in
Geobiology
Biological activity at deep-sea hydrothermal chimneys is driven by chemotrophic microorganisms that metabolize chemicals from the venting high-temperature fluids. Understanding taphonomy and microbial microtextures in such environments is a necessity for micropaleontological and palaeoecological research. This study examines fossilized microorganis...
Lamérand, Céline Shirokova, Liudmila S Petit, Mathis Bénézeth, Pascale Rols, Jean-Luc Pokrovsky, Oleg S
Published in
Geobiology
The biomineralization of CO2 , in the form of carbonate minerals, is considered as one of the efficient solutions of atmospheric CO2 removal, allowing stable and sustainable storage of this greenhouse gas. Cyanobacteria are among the most powerful microorganisms capable of precipitating carbonate minerals, both in the present and in the past. In th...
Cadeau, Pierre Cartigny, Pierre Thomazo, Christophe Jézéquel, Didier Leboulanger, Christophe Sarazin, Gérard Ader, Magali
Published in
Geobiology
Sedimentary records of superheavy pyrites in Phanerozoic and Proterozoic successions (i.e., extremely positive δ34 Spyrite values together with higher δ34 Spyrite than coeval δ34 SCAS ) are mostly interpreted as resulting either from secondary postdepositional processes or from multiple redox reactions between sulfate and sulfide in stratified sulf...
O'Connell, Brennan Wallace, Malcolm W Hood, Ashleigh V S Rebbechi, Luke Brooks, Hannah L
Published in
Geobiology
Stromatolites and microbialites contain a rich repository of environmental and biological information. Despite extensive research, questions remain regarding the biological, chemical, and physical processes that control stromatolite macro, meso, and microstructure. We report unusual deep water cuspate stromatolites from the Cryogenian Trezona Forma...