Planktonic microbial communities from microbialite‐bearing lakes sampled along a salinity‐alkalinity gradient [PDF]
Limnology and Oceanography, Volume 67, Issue 12, Page 2718-2733, December 2022., 2022 Abstract Continental freshwater systems are particularly vulnerable to environmental variation. Climate change‐induced desertification and the anthropogenic exploitation of hydric resources result in the progressive evaporation and salinization of inland water bodies in many areas of the globe.
Miguel Iniesto +6 more
wiley +2 more sources
Micropearls and other intracellular inclusions of amorphous calcium carbonate: an unsuspected biomineralization capacity shared by diverse microorganisms [PDF]
Environmental Microbiology, Volume 24, Issue 2, Page 537-550, February 2022., 2022 Summary An unsuspected biomineralization process, which produces intracellular inclusions of amorphous calcium carbonate (ACC), was recently discovered in unicellular eukaryotes. These mineral inclusions, called micropearls, can be highly enriched with other alkaline‐earth metals (AEM) such as Sr and Ba.
Inés Segovia‐Campos +4 more
wiley +2 more sources
Adaptation of Microbialite‐Associated Prokaryotic Communities to Natural and Experimental Anoxic Conditions [PDF]
Geobiology, Volume 24, Issue 5, September/October 2026.ABSTRACT Microbialites are rocks formed by microbial communities that influence, promote, and/or control the precipitation of mineral phases. The oldest microbialites date back to the Archean and formed under globally anoxic conditions. Accordingly, modern microbialites developing under oxic conditions are limited analogs of their earliest predecessors.
Jeanne Caumartin +12 more
wiley +2 more sources
Untangling the Primary Biotic and Abiotic Controls on Oxygen, Inorganic and Organic Carbon Isotope Signals in Modern Microbialites [PDF]
Geobiology, Volume 23, Issue 1, January/February 2025.ABSTRACT Microbialites are organo‐sedimentary structures formed throughout most of the Earth history, over a wide range of geological contexts, and under a multitude of environmental conditions affecting their composition. The carbon and oxygen isotope records of carbonates, which are most often their main constituents, have been used as a widespread ...
Robin Havas +11 more
wiley +2 more sources
Thermochemical Study of 1-Methylhydantoin [PDF]
Molecules, 2022 Using static bomb combustion calorimetry, the combustion energy of 1-methylhydantoin was obtained, from which the standard molar enthalpy of formation of the crystalline phase at T = 298.15 K of the compound studied was calculated.
Juan M. Ledo +3 more
doaj +2 more sources
Piperidine-Iodine as Efficient Dual Catalyst for the One-Pot, Three-Component Synthesis of Coumarin-3-Carboxamides [PDF]
Molecules, 2022 A simple and efficient one-pot, three-component synthetic method for the preparation of coumarin-3-carboxamides was carried out by the reaction of salicylaldehyde, aliphatic primary/secondary amines, and diethylmalonate.
Manuel Velasco +12 more
doaj +2 more sources
Alkaline saline lakes: A chemical evolution experiment evaluating the stability of formaldehyde in an aqueous saline environment [PDF]
HeliyonFormaldehyde condensation in the presence of a mineral catalyst and under alkaline conditions is considered to be a ''messy'' chemical system due to its dependence on the complex chemical equilibrium between the reaction intermediates, which has a ...
Claudio Alejandro Fuentes-Carreón +3 more
doaj +2 more sources
Phenotypic plasticity of life-history traits of a calanoid copepod in a tropical lake: Is the magnitude of thermal plasticity related to thermal variability? [PDF]
PLoS ONE, 2018 According to the Climatic Variability Hypothesis [CVH], thermal plasticity should be wider in organisms from temperate environments, but is unlikely to occur in tropical latitudes where temperature fluctuations are narrow.
Elizabeth Ortega-Mayagoitia +2 more
doaj +2 more sources
Solid Earth SciencesAlchichica Maar is in the eastern sector of the Trans-Mexican Volcanic Belt, where volcanics range from basalts to rhyolites, with 87Sr/86Sr and 143Nd/144Nd values between 0.70293 to 0.70447 (εSr = −21.1 to −4.5) and 0.512733 to 0.512949 (εNd = +3.4 to ...
Jhoanna Silis E. +2 more
exaly +3 more sources
16S rDNA-based analysis reveals cosmopolitan occurrence but limited diversity of two cyanobacterial lineages with contrasted patterns of intracellular carbonate mineralization [PDF]
Frontiers in Microbiology, 2014 Cyanobacteria are mainly thought to induce carbonate precipitation extracellularly via their photosynthetic activity combined with the nucleation potential of exopolymeric substances. The discovery in microbialites of the alkaline lake Alchichica (Mexico)
Marie eRagon +5 more
doaj +2 more sources