Results 31 to 40 of about 412 (115)

Temporal Variation in the Abundance of Poblana Alchichica in Near-shore Habitat of the High Elevation Lake, Lago De Alchichica, Puebla, Mexico [PDF]

open access: yes, 2012
"The distribution and abundance of organisms within a pond or lake can reflect the result of a variety of factors. We examined the abundance of the endemic fish, Poblana Alchichica, in Lago de Alchichica, Puebla, Mexico, as well as how the abundance varied among months. Dissolved oxygen, temperature, and salinity varied among months.
Avila-Bocanegra, L. E.   +5 more
core   +4 more sources

Diferenciación morfométrica de los géneros Poblana, Chirostoma y Menidia (Osteichthyes: Atherinopsidae) [PDF]

open access: yes, 2021
Background: The recent origin of the genera Chirostoma and Poblana, and the scarce morphological differentiation between them, have made it difficult to define their taxonomic validity, in addition to the fact that both genera share a common ancestor ...
Ibáñez Aguirre, Ana Laura
core   +2 more sources

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

open access: yesThe ISME Journal, 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?
Emmanuelle, Gérard   +6 more
openaire   +2 more sources

Profundal benthic invertebrates in an oligotrophic tropical lake: different strategies for coping with anoxia

open access: yesJournal of Limnology, 2014
The deep benthic communities of tropical lakes are poorly understood with respect to their composition, abundance, biomass and regulatory factors. Whereas the hypolimnia of temperate oligotrophic lakes remain oxygenated, the higher temperatures in ...
María del Carmen Hernández   +3 more
doaj   +1 more source

Microbialite response to an anthropogenic salinity gradient in Great Salt Lake, Utah. [PDF]

open access: yes, 2017
A railroad causeway across Great Salt Lake, Utah (GSL), has restricted water flow since its construction in 1959, resulting in a more saline North Arm (NA; 24%-31% salinity) and a less saline South Arm (SA; 11%-14% salinity).
Allwood   +93 more
core   +2 more sources

Bacterial Diversity in the Hyperalkaline Allas Springs (Cyprus), a Natural Analogue for Cementitious Radioactive Waste Repository [PDF]

open access: yes, 2016
The biogeochemical gradients that will develop across the interface between a highly alkaline cementitious geological disposal facility for intermediate level radioactive waste and the geosphere are poorly understood.
Alexander WR   +12 more
core   +3 more sources

Estimation of the eddy diffusivity coefficient in a warm monomictic tropical Lake

open access: yesJournal of Limnology, 2016
We used a two-year dataset (1998-1999) of monthly temperature profiles from Lake Alchichica, Mexico to estimate values of the vertical coefficient of eddy diffusivity.
David A. Salas de León   +3 more
doaj   +1 more source

Biodiversity of living, non marine, thrombolites of Lake Clifton, Western Australia [PDF]

open access: yes, 2016
Lake Clifton in Western Australia is recognized as a critically endangered ecosystem and the only thrombolite reef in the southern hemisphere. There have been concerns that increases in salinity and nutrient run-off have significantly impacted upon the ...
Gleeson, D.   +4 more
core   +4 more sources

Some mixotrophic flagellate species selectively graze on Archaea [PDF]

open access: yes, 2016
Altres ajuts: Spanish Ministry of the Environment project EGALA (OAPN-124/2010)Many phototrophic flagellates ingest prokaryotes. This mixotrophic trait becomes a critical aspect of the microbial loop in planktonic food webs because of the typical high ...
Ballen-Segura, Miguel   +2 more
core   +2 more sources

Genetic diversity associated with N-cycle pathways in microbialites from Lake Alchichica, Mexico [PDF]

open access: yesAquatic Microbial Ecology, 2017
Author(s): Alcantara-Hernandez, RJ; Valdespino-Castillo, PM; Centeno, CM; Alcocer, J; Merino-Ibarra, M; Falcon, LI | Abstract: Microbialites are an example of complex and diverse microbial assemblages where several metabolic pathways are interconnected for biomass formation coupled to mineral precipitation.
Alcántara-Hernández, RJ   +5 more
openaire   +3 more sources

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