Physicochemical Parameters Affecting the Distribution and Diversity of the Water Column Microbial Community in the High-Altitude Andean Lake System of La Brava and La Punta
Due to the low incidence of precipitation attributed to climate change, many high-altitude Andean lakes (HAALs) and lagoons distributed along the central Andes in South America may soon disappear. This includes La Brava–La Punta, a brackish lake system located south of the Salar de Atacama within a...
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doaj-723080c5569e4855b58b938e3a68a2252020-11-25T02:50:01ZengMDPI AGMicroorganisms2076-26072020-08-0181181118110.3390/microorganisms8081181Physicochemical Parameters Affecting the Distribution and Diversity of the Water Column Microbial Community in the High-Altitude Andean Lake System of La Brava and La PuntaReynaldo Núñez Salazar0Carlos Aguirre1Jorge Soto2Pamela Salinas3Carlos Salinas4Humberto Prieto5Manuel Paneque6Bionostra Chile Research Foundation, Almirante Lynch 1179, San Miguel, Santiago 8920033, ChileBiotechnology Laboratory, La Platina Station, Instituto de Investigaciones Agropecuarias, Santa Rosa 11610, La Pintana, Santiago 8831314, ChileBionostra Chile Research Foundation, Almirante Lynch 1179, San Miguel, Santiago 8920033, ChileBionostra Chile Research Foundation, Almirante Lynch 1179, San Miguel, Santiago 8920033, ChileBionostra Chile Research Foundation, Almirante Lynch 1179, San Miguel, Santiago 8920033, ChileBiotechnology Laboratory, La Platina Station, Instituto de Investigaciones Agropecuarias, Santa Rosa 11610, La Pintana, Santiago 8831314, ChileLaboratory of Bioenergy and Environmental Biotechnology, Department of Environmental Sciences and Natural Resources, Faculty of Agricultural Sciences, University of Chile, Santa Rosa 11315, La Pintana, Santiago 8820808, ChileDue to the low incidence of precipitation attributed to climate change, many high-altitude Andean lakes (HAALs) and lagoons distributed along the central Andes in South America may soon disappear. This includes La Brava–La Punta, a brackish lake system located south of the Salar de Atacama within a hyper-arid and halophytic biome in the Atacama Desert. Variations in the physicochemical parameters of the water column can induce changes in microbial community composition, which we aimed to determine. Sixteen sampling points across La Brava–La Punta were studied to assess the influence of water physicochemical properties on the aquatic microbial community, determined via 16S rRNA gene analysis. Parameters such as pH and the concentrations of silica, magnesium, calcium, salinity, and dissolved oxygen showed a more homogenous pattern in La Punta samples, whereas those from La Brava had greater variability; pH and total silica were significantly different between La Brava and La Punta. The predominant phyla were Proteobacteria, Bacteroidetes, Actinobacteria, and Verrucomicrobia. The genera <i>Psychroflexus</i> (36.85%), <i>Thiomicrospira</i> (12.48%), and <i>Pseudomonas</i> (7.81%) were more abundant in La Brava, while <i>Pseudospirillum</i> (20.73%) and <i>Roseovarius</i> (17.20%) were more abundant in La Punta. Among the parameters, pH was the only statistically significant factor influencing the diversity within La Brava lake. These results complement the known microbial diversity and composition in the HAALs of the Atacama Desert.https://www.mdpi.com/2076-2607/8/8/1181high altitude Andean lakeswater columnmicrobial diversityphysicochemical parametersmicrobiome characterizationtaxonomic diversity |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Reynaldo Núñez Salazar Carlos Aguirre Jorge Soto Pamela Salinas Carlos Salinas Humberto Prieto Manuel Paneque |
spellingShingle |
Reynaldo Núñez Salazar Carlos Aguirre Jorge Soto Pamela Salinas Carlos Salinas Humberto Prieto Manuel Paneque Physicochemical Parameters Affecting the Distribution and Diversity of the Water Column Microbial Community in the High-Altitude Andean Lake System of La Brava and La Punta Microorganisms high altitude Andean lakes water column microbial diversity physicochemical parameters microbiome characterization taxonomic diversity |
author_facet |
Reynaldo Núñez Salazar Carlos Aguirre Jorge Soto Pamela Salinas Carlos Salinas Humberto Prieto Manuel Paneque |
author_sort |
Reynaldo Núñez Salazar |
title |
Physicochemical Parameters Affecting the Distribution and Diversity of the Water Column Microbial Community in the High-Altitude Andean Lake System of La Brava and La Punta |
title_short |
Physicochemical Parameters Affecting the Distribution and Diversity of the Water Column Microbial Community in the High-Altitude Andean Lake System of La Brava and La Punta |
title_full |
Physicochemical Parameters Affecting the Distribution and Diversity of the Water Column Microbial Community in the High-Altitude Andean Lake System of La Brava and La Punta |
title_fullStr |
Physicochemical Parameters Affecting the Distribution and Diversity of the Water Column Microbial Community in the High-Altitude Andean Lake System of La Brava and La Punta |
title_full_unstemmed |
Physicochemical Parameters Affecting the Distribution and Diversity of the Water Column Microbial Community in the High-Altitude Andean Lake System of La Brava and La Punta |
title_sort |
physicochemical parameters affecting the distribution and diversity of the water column microbial community in the high-altitude andean lake system of la brava and la punta |
publisher |
MDPI AG |
series |
Microorganisms |
issn |
2076-2607 |
publishDate |
2020-08-01 |
description |
Due to the low incidence of precipitation attributed to climate change, many high-altitude Andean lakes (HAALs) and lagoons distributed along the central Andes in South America may soon disappear. This includes La Brava–La Punta, a brackish lake system located south of the Salar de Atacama within a hyper-arid and halophytic biome in the Atacama Desert. Variations in the physicochemical parameters of the water column can induce changes in microbial community composition, which we aimed to determine. Sixteen sampling points across La Brava–La Punta were studied to assess the influence of water physicochemical properties on the aquatic microbial community, determined via 16S rRNA gene analysis. Parameters such as pH and the concentrations of silica, magnesium, calcium, salinity, and dissolved oxygen showed a more homogenous pattern in La Punta samples, whereas those from La Brava had greater variability; pH and total silica were significantly different between La Brava and La Punta. The predominant phyla were Proteobacteria, Bacteroidetes, Actinobacteria, and Verrucomicrobia. The genera <i>Psychroflexus</i> (36.85%), <i>Thiomicrospira</i> (12.48%), and <i>Pseudomonas</i> (7.81%) were more abundant in La Brava, while <i>Pseudospirillum</i> (20.73%) and <i>Roseovarius</i> (17.20%) were more abundant in La Punta. Among the parameters, pH was the only statistically significant factor influencing the diversity within La Brava lake. These results complement the known microbial diversity and composition in the HAALs of the Atacama Desert. |
topic |
high altitude Andean lakes water column microbial diversity physicochemical parameters microbiome characterization taxonomic diversity |
url |
https://www.mdpi.com/2076-2607/8/8/1181 |
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