Bacterial and archaeal diversity in high altitude wetlands of the Chilean Altiplano

Dorador, Cristina; Vila, Irma; Witzel, Karl-Paul; Imhoff, Johannes F.

doi:10.1127/1863-9135/2013/0393

Cited by 91 publications

(96 citation statements)

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“…Cation abundance was: Mg > Na > Ca > Si > P> Cu> Zn. In the sediment, cation abundance was Fe > Al > Mn > Ni > Zn, plus CaCO3, a somewhat similar finding made in northern salty lagoons (Risarcher et al, 2003;Dorador et al, 2013), and Laguna Amarga, which in addition to sulphate has carbonated water ionic composition (Saijo et al, 1995;Campos et al, 1996). The high sulphate concentration is likely to be explained by the continuous wash-out of oceanic rocks (Díaz et al, 1960;Campos et al, 1996).…”

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“…For example, there are inland hypersaline lakes in evaporitic basins in the highlands of the Atacama Desert, a sub-tropical and extremely dry desert (24°30'S, 69°15'W) (Demergasso et al, 2004;Dorador et al, 2013), and in the Patagonia, between 39 and 53°S, an arid and semi-humid climate, and steppe-like landscape (Campos et al, 1996). Patagonian hypersaline lagoons are special or atypical since conditions for maintaining brines (high salt concentration; up to 3 g L -1…”

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confidence: 99%

“…Chile exhibits wide latitudinal (39° to 61°S) and altitudinal gradient (from sea level up 6,960 m above sea level in the Andes Mountains), along which hypersaline lakes and lagoons occur at very contrasting selective pressures (e.g., day/night temperature variation, evaporation-rainfall rates) imposed by climatic conditions, the geo-morphology and the mineral composition of the endorheic basins in which they are located (Risarcher et al, 2003;Dorador et al, 2013). For example, there are inland hypersaline lakes in evaporitic basins in the highlands of the Atacama Desert, a sub-tropical and extremely dry desert (24°30'S, 69°15'W) (Demergasso et al, 2004;Dorador et al, 2013), and in the Patagonia, between 39 and 53°S, an arid and semi-humid climate, and steppe-like landscape (Campos et al, 1996).…”

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A glimpse to Laguna de los Cisnes, a field laboratory and natural monument in the Chilean Patagonia

Fuentes

Gajardo

2017

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ABSTRACT. Laguna de los Cisnes (53°15'S) is a remote and unusual salty lagoon located in the Chilean Patagonia, declared natural monument to protect bird diversity in the area, which could also serve as a natural laboratory to monitor climate change. This study reports basic water, sediment and plankton characteristics observed during a summer (December) sampling, when the lagoon was hypersaline (51 g L ). The microalgae Spirogyra sp. and the micro-crustacean Artemia are predominating plankton. Results are discussed in the context of the climatic conditions affecting this lagoon year-round.

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A glimpse to Laguna de los Cisnes, a field laboratory and natural monument in the Chilean Patagonia

Fuentes

Gajardo

2017

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“…A series of recent studies have highlighted that high altitude wetlands have unusual microbial communities (Bacteria and Archaea) that include the presence of previously undescribed lineages of Bacteria (Dorador et al 2013). These taxa participate actively in different biogeochemical cycles (Dorador et al 2008a) and exhibit marked temporal and spatial variation according to gradients of salinity, temperature and solar radiation (Dorador et al 2008b;.…”

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“…This extends from the varied primary producer communities that include contributions from fringing macrophytes, microalgae and microbial mats (Mitsh & Gosselink 2000;Dorador et al 2008;Riveros et al 2012) that are often exposed to desiccation, through to the higher taxa that consume and transfer energy and nutrients as part of the foodwebs such as fi sh (Vila et al 2013).…”

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confidence: 99%

Microbial diversity and trophic components of two high altitude wetlands of the Chilean Altiplano

et al. 2015

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This study examines the limnology and ecology of two high altitude wetlands, Lirima (19°51'24 S; 68°55'02 W; 4000 m asl) and Caya (20°37'21 S; 68°58'28 W; 3700 m asl), located in the Chilean Altiplano. Both wetlands are formed by the evaporitic remnant basins of paleolakes which occupied an extensive area of what today is known as the Altiplano. These systems have a negative hydrological balance, receiving their water from groundwater, snow melt and limited seasonal rains. An ongoing negative water balance and the sediment characteristics in the region have accelerated the salinization process in these systems, as shown by their present physicochemical characteristics. Nutrient values were typical of mesotrophic to eutrophic systems. The ionic content classifi es Lirima as a sodium sulfated wetland and Caya as a calcium chloride one. Conductivity values ranged between 778 μS/cm at Lirima to 2100 μS/cm at Caya, and were refl ected in the differences in biodiversity found in these systems. The Lirima wetland supports a population of the endemic fi sh Orestias aff. agassii found in several Evolutionary Signifi cant Units (ESU) across the region. Microbial diversity in the water column was characterized by the presence of 5 bacterial phyla and related genera (e.g. Psychrobacter, Bacillus, Eryhtobacter, Halomonas). We present information on several key ecosystem components including macrophytes, plankton, benthos, fi sh and birds. This descriptive paper highlights the unusual limnological and biological characteristics of high altitude wetlands and highlights the importance of describing their biological communities across levels of organisation (e.g. microbial through to higher vertebrates) as well as their functional role, interactions and sensitivity to changes in water availability. KEYWORDS:Altiplano, biodiversity, endemism, evolutionary signifi cant units, salinity. RESUMENEste estudio examina la limnología y ecología de dos lagos de altura, los humedales de Lirima (19°51'24 S; 68°55'02 W; 4000 m asl) y Caya (20°37'21 S; 68°58'28 W; 3700 m asl) que están ubicados en el Altiplano Chileno, representando cuencas evaporíticas remanentes de antiguos paleolagos los cuales ocuparon una amplia zona en lo que hoy conocemos como Altiplano. Estos sistemas tienen un balance hídrico negativo, recibiendo su agua desde fuentes freáticas, derretimiento de nueves y escasas lluvias estacionales. Las características del suelo junto con la demanda de agua en la región han acelerado el proceso desalinización en estos sistemas siendo refl ejado en las características químicas actuales. Los valores de nutrientes fueron típicos de sistemas mesotrófi cos a eutrófi cos. El contenido iónico clasifi ca Lirima como un humedal sodio sulfatado y el humedal de Caya como un humedal de cloruro de calcio. Los valores de conductividad fl uctuaron entre 778 μS/cm en Lirima a 2100 μS/cm en Caya, refl ejándose en las diferencias de biodiversidad encontrada en estos sistemas. El humedal de Lirima conserva el pez endémico Orestias que represe...

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Seeökosysteme II: Lebensräume, biologische Stoffumsatzprozesse und taxonomische Diversität der Organismen

Geller¹,

Hupfer

2015

Handbuch Angewandte Limnologie: Grundlagen - Gewässerbelastung - Restaurierung - Aquatische Ökotoxikologie - Bewertung - Gewäss

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Bacterial and archaeal diversity in high altitude wetlands of the Chilean Altiplano

Cited by 91 publications

References 4 publications

A glimpse to Laguna de los Cisnes, a field laboratory and natural monument in the Chilean Patagonia

A glimpse to Laguna de los Cisnes, a field laboratory and natural monument in the Chilean Patagonia

Microbial diversity and trophic components of two high altitude wetlands of the Chilean Altiplano

Seeökosysteme II: Lebensräume, biologische Stoffumsatzprozesse und taxonomische Diversität der Organismen

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