Results 1 to 10 of about 569,757 (120)

Prokaryotic and Eukaryotic Community Structure in Field and Cultured Microbialites from the Alkaline Lake Alchichica (Mexico) [PDF]

open access: yesPLoS ONE, 2011
The geomicrobiology of crater lake microbialites remains largely unknown despite their evolutionary interest due to their resemblance to some Archaean analogs in the dominance of in situ carbonate precipitation over accretion.
Karim Benzerara   +2 more
exaly   +4 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]

open access: yesPLoS 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   +3 more sources

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

open access: yesLimnol 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   +6 more
europepmc   +2 more sources

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

open access: yesGeofísica 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   +3 more
doaj   +4 more sources

Effects of El Niño on the dynamics of Lake Alchichica, central Mexico [PDF]

open access: yesGeofísica Internacional, 2003
Lake Alchichica is a deep, warm-monomictic lake in Puebla State, central Mexico. Water temperature, dissolved oxygen and chlorophyll a annual concentration patterns are compared under ENSO and non-ENSO conditions.
Alfonso Lugo, Javier Alcocer
doaj   +4 more sources

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

open access: yesEnviron 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   +4 more
europepmc   +2 more sources

Seasonal and Interannual Dynamics of Pelagic Rotifers in a Tropical, Saline, Deep Lake

open access: yesDiversity, 2022
This is the first long-term study (monthly samples at two 4-year intervals: 1998 to 2001 and 2013 to 2016) on rotifers in a saline, deep lake. The pelagic rotifer assemblage of Lake Alchichica is simple and comprised by two species, both new and most ...
Rocío Fernández   +4 more
doaj   +2 more sources

Using Wavelet Analysis to Examine Long-Term Variability of Phytoplankton Biomass in the Tropical, Saline Lake Alchichica, Mexico

open access: yesWater (Switzerland), 2022
The phytoplankton biomass (chlorophyll-a, Chl-a) is directly related to the total production of lakes. Chl-a in temperate lakes oscillates on an annual scale.
Luis A Oseguera   +2 more
exaly   +2 more sources

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

open access: yesGeobiology
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   +11 more
europepmc   +2 more sources

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

open access: yesJournal 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   +3 more
doaj   +2 more sources

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