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dc.contributor.author
Rasuk, Maria Cecilia
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dc.contributor.author
Contreras Leiva, Manuel
dc.contributor.author
Kurth, Daniel German
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dc.contributor.author
Farias, Maria Eugenia
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dc.contributor.other
Farias, Maria Eugenia
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dc.date.available
2021-06-02T18:06:34Z
dc.date.issued
2020
dc.identifier.citation
Rasuk, Maria Cecilia; Contreras Leiva, Manuel; Kurth, Daniel German; Farias, Maria Eugenia; Complete Characterization of Stratified Ecosystems of the Salar de Llamara (Atacama Desert); Springer Nature Switzerland AG; 2020; 153-164
dc.identifier.isbn
978-3-030-36191-4
dc.identifier.uri
http://hdl.handle.net/11336/133023
dc.description.abstract
Salar de Llamara is situated in the north of the Atacama Desert, which is the driest desert and one of the most irradiated places on Earth. Besides, its subterranean hypersaline waters contain a high content of arsenic, among other compounds such as heavy metals that are poisonous to life in the concentrations present. Despite these extreme conditions, diverse microbial communities flourish in gypsum stratified ecosystems (microbial mats and evaporitic domes).Here, we reviewed all the analysis carried out in these communities, involving taxonomic and functional studies by culture-independent techniques, analysis of the physicochemical parameters of the water and its relation with the microbial ecosystems, together with pigments, mineralogy, and the microscopic view.Regarding taxonomy, the major points analyzed were: (1) the taxonomic trends at phylum level showed that Proteobacteria and Bacteroidetes were the major components of these communities. (2) A low proportion of sequences associated with the phylum Cyanobacteria were detected in all the studied samples. (3) The increased proportion of sequences that could not be affiliated with any taxonomic group that is deposited in the databases. (4) The large amount of rare phyla represented by candidate phyla, such as OD1, OP1, OD8, Hyd24-12, and NKB19.The functional analysis, carried out in these gypsum evaporite systems, revealed that there was only a minor presence of oxygenic photosynthesizers in the community, and anoxygenic photosynthesis appears as an alternative for primary production. Since the Calvin?Benson cycle was scant, the low abundance of oxygenic photosynthesizers was also related to unusual carbon fixation pathways.Regarding physicochemical parameters of the water, the most interesting results were: (1) a huge amount of arsenic; (2) high salinity; (3) low nutrients and high levels of some ions, such as sodium, sulfate, and calcium. The low dissolved oxygen in most of the set points was low, which was consistent with the low proportion of oxygenic photosynthesizers in all the samples studied.Regarding the mineralogy, gypsum mainly compounded all the evaporitic domes, and the microbial mats present halite as the main mineral component.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer Nature Switzerland AG
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights
Atribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5 AR)
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.source
https://link.springer.com/book/10.1007/978-3-030-36192-1
dc.subject
SALAR DE LLAMARA
dc.subject
EXTREME ENVIRONMENT
dc.subject
MICROBIAL DIVERSITYY
dc.subject
EVAPORITIC DOME
dc.subject
MICROBIAL MATS
dc.subject
FUNCTIONAL DIVERSITY
dc.subject.classification
Biología Celular, Microbiología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Complete Characterization of Stratified Ecosystems of the Salar de Llamara (Atacama Desert)
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/bookPart
dc.type
info:ar-repo/semantics/parte de libro
dc.date.updated
2020-12-04T19:23:52Z
dc.journal.pagination
153-164
dc.journal.pais
Suiza
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dc.journal.ciudad
Cham
dc.description.fil
Fil: Rasuk, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
dc.description.fil
Fil: Contreras Leiva, Manuel. Centro de Ecología Aplicada; Chile
dc.description.fil
Fil: Kurth, Daniel German. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
dc.description.fil
Fil: Farias, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/chapter/10.1007/978-3-030-36192-1_11
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1007/978-3-030-36192-1_11
dc.conicet.paginas
XXIV, 292
dc.source.titulo
Microbial Ecosystems in Central Andes Extreme Environments: Biofilms, Microbial Mats, Microbialites and Endoevaporites
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