Results 11 to 20 of about 180 (135)

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

Inter-annual ciliate distribution variation within the late stratification oxycline in a monomictic lake, Lake Alchichica (Mexico)

Journal of Limnology, 2016
noxia, and ciliates might play a very important role in the plankton community budget there. We analysed changes in the composition and biomass of the ciliate assemblage and other microbial loop components throughout the oxycline just at the end of ...
Ximena Sánchez Medina, Miroslav Macek, Fernando Bautista-Reyes, Andrea Perz, Patricia Bonilla Lemus, Mario Chávez Arteaga   +5 more
doaj   +3 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

On the ecology of Cletocamptus gomezi Suárez-Morales, Barrera-Moreno & Ciros-Pérez 2013 (Crustacea, Copepoda, Harpacticoida) micro-endemic to Lake Alchichica, Central Mexico

Journal of Limnology, 2014
Cletocamptus gomezi Suárez-Morales, Barrera-Moreno & Ciros-Pérez (2013) is a recently described new species of meiobenthic Harpacticoida copepod, micro-endemic to Lake Alchichica, Puebla, Central Mexico. Cletocamptus gomezi lives in saline water (K25
Javier Alcocer, María del Carmen Hernández, Luis A. Oseguera, Elva Escobar   +3 more
doaj   +3 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

Specific carbonate-microbe interactions in the modern microbialites of Lake Alchichica (Mexico). [PDF]

ISME J, 2013
Abstract The role of microorganisms in microbialite formation remains unresolved: do they induce mineral precipitation (microbes first) or do they colonize and/or entrap abiotic mineral precipitates (minerals first)? Does this role vary from one species to another? And what is the impact of mineral precipitation on microbial ecology?
Gérard E, Ménez B, Couradeau E, Moreira D, Benzerara K, Tavera R, López-García P.   +6 more
europepmc   +4 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

Formation of Magnesium Carbonates on Earth and Implications for Mars. [PDF]

J Geophys Res Planets, 2021
Abstract Magnesium carbonates have been identified within the landing site of the Perseverance rover mission. This study reviews terrestrial analog environments and textural, mineral assemblage, isotopic, and elemental analyses that have been applied to establish formation conditions of magnesium carbonates.
Scheller EL, Swindle C, Grotzinger J, Barnhart H, Bhattacharjee S, Ehlmann BL, Farley K, Fischer WW, Greenberger R, Ingalls M, Martin PE, Osorio-Rodriguez D, Smith BP.   +12 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