RESEARCH ARTICLE Prokaryotic diversity and biogeochemical characteristics of benthic microbial ecosystems at La Brava, a hypersaline lake at Salar de Atacama, Chile Maria Eugenia Farias1*, Maria Cecilia Rasuk1, Kimberley L. Gallagher4, Manuel Contreras2, Daniel Kurth1, Ana Beatriz Fernandez1, Daniel Poire 3, Fernando Novoa2, Pieter T. Visscher4,5 a1111111111 1 Laboratorio de Investigaciones MicrobioloÂgicas de Lagunas Andinas (LIMLA), Planta Piloto de Procesos Industriales MicrobioloÂgicos (PROIMI), CCT-TucumaÂn, CONICET, TucumaÂn, Argentina, 2 Centro de a1111111111 EcologõÂa Aplicada (CEA), NÄ uñoa, Santiago, Chile, 3 Centro de Investigaciones GeoloÂgicas, Universidad a1111111111 Nacional de La Plata-Conicet, La Plata, Argentina, 4 Department of Marine Sciences, University of a1111111111 Connecticut, Groton, Connecticut, United States of America, 5 Australian Centre for Astrobiology, University a1111111111 of New South Wales, Sydney, New South Wales, Australia *
[email protected] OPEN ACCESS Abstract Citation: Farias ME, Rasuk MC, Gallagher KL, Contreras M, Kurth D, Fernandez AB, et al. (2017) Benthic microbial ecosystems of Laguna La Brava, Salar de Atacama, a high altitude hyper- Prokaryotic diversity and biogeochemical saline lake, were characterized in terms of bacterial and archaeal diversity, biogeochem- characteristics of benthic microbial ecosystems at istry, (including O2 and sulfide depth profiles and mineralogy), and physicochemical La Brava, a hypersaline lake at Salar de Atacama, characteristics. La Brava is one of several lakes in the Salar de Atacama where microbial Chile. PLoS ONE 12(11): e0186867. https://doi.org/ 10.1371/journal.pone.0186867 communities are growing in extreme conditions, including high salinity, high solar insolation, and high levels of metals such as lithium, arsenic, magnesium, and calcium. Evaporation Editor: Stefan J.