Results 11 to 20 of about 285 (134)

Candona alchichica (Podocopida: Candonidae), a new ostracod species from saline, tropical Lake Alchichica, Mexico

Journal of Limnology, 2016
In North America, most species of the Candonidae family belong to the genus Candona. These species are frequently found in freshwater ecosystems and in sediment sequences, which makes them valuable tools for paleoenvironmental reconstructions.
Sergio Cohuo, Maria del Carmen Hernández, Liseth Pérez, Javier Alcocer   +3 more
doaj   +4 more sources

Short-term climatic change in lake sediments from lake Alchichica, Oriental, Mexico [PDF]

Geofísica Internacional, 2003
Reduced precipitation in central Mexico is related to ENSO events. These short-term climatic fluctuations can modify mixing-stratification patterns of lake systems, reflected in the sediments deposited at the bottom year after year.
Diana Juárez, Alejandro Rodríguez, Gloria Vilaclara, Margarita Caballero   +3 more
doaj   +5 more sources

Planktonic microbial communities from microbialite-bearing lakes sampled along a salinity-alkalinity gradient. [PDF]

Limnol Oceanogr, 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.
Iniesto M, Moreira D, Benzerara K, Reboul G, Bertolino P, Tavera R, López-García P.   +6 more
europepmc   +2 more sources

Micropearls and other intracellular inclusions of amorphous calcium carbonate: an unsuspected biomineralization capacity shared by diverse microorganisms. [PDF]

Environ Microbiol, 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.
Segovia-Campos I, Martignier A, Filella M, Jaquet JM, Ariztegui D.   +4 more
europepmc   +2 more sources

Dynamics of internal waves generated by mountain breeze in Alchichica Crater Lake, Mexico

Geofísica Internacional, 2015
Mediciones hidrofísicas realizadas en el lago cráter profundo Alchichica, México, mostraron la presencia de ondas internas intensas con período de un día, generadas por la influencia regular de la brisa de montaña.
Anatoliy Filonov, Iryna Tereshchenko, Javier Alcocer, Cesar Monzón   +3 more
doaj   +3 more sources

Untangling the Primary Biotic and Abiotic Controls on Oxygen, Inorganic and Organic Carbon Isotope Signals in Modern Microbialites. [PDF]

Geobiology
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 ...
Havas R, Thomazo C, Caumartin J, Iniesto M, Bert H, Jézéquel D, Moreira D, Tavera R, Bettencourt V, López-García P, Vennin E, Benzerara K.   +11 more
europepmc   +2 more sources

Rapid formation of mature microbialites in Lake Alchichica, Mexico [PDF]

Environmental Microbiology Reports, 2021
Summary Microbialites are emblematic sedimentary rocks formed by phylogenetically and metabolically complex microbial communities thriving under specific physicochemical conditions. Most microbialites are photosynthesis‐based ecosystems frequently formed by carbonates, thereby capturing inorganic carbon in the ...
Iniesto, Miguel, Moreira, David, Benzerara, Karim, Muller, Elodie, Bertolino, Paola, Tavera, Rosaluz, López‐García, Purificación   +6 more
openaire   +2 more sources

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

Freshwater Biology, Volume 68, Issue 11, Page 1818-1838, November 2023., 2023
Abstract 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
Janet Sánchez‐Sánchez, Mariano Cerca, Bárbara B. Moguel, Israel Muñoz‐Velasco, Rocío J. Alcántara‐Hernández, Dora Carreón‐Freyre, Gilles Levresse   +6 more
wiley   +1 more source

Response of diatom assemblages to orbital‐ and millennial‐scale climatic variability since the penultimate glacial maximum in the northern limit of the Neotropics

Journal of Quaternary Science, Volume 38, Issue 5, Page 750-766, July 2023., 2023
ABSTRACT Lake Chalco, in Central Mexico, has a long diatom record which provides an excellent opportunity to document the biotic and hydrological responses of this ecosystem to orbital‐ and millennial‐scale climatic variability during the last 150 ka. Detrended correspondence analysis was used to evaluate the ecological turnover and to identify diatom ...
Diana Avendaño, Margarita Caballero, Beatriz Ortega‐Guerrero, Socorro Lozano‐García   +3 more
wiley   +1 more source

Nitrogen is unlikely to consistently limit primary productivity in most tropical lakes

Ecosphere, Volume 14, Issue 3, March 2023., 2023
Abstract Despite mounting evidence that tropical lakes may experience an array of phytoplankton nutrient limitation regimes, references to low‐latitude lakes being predominantly nitrogen limited remain common in the literature. To assess the current understanding of nutrient limitation regimes in tropical lakes, we performed a literature review with ...
Jemma M. Fadum, Ed K. Hall
wiley   +1 more source