Arid
DOI10.1007/s10482-018-1091-z
Microbial community composition and trophic role along a marked salinity gradient in Laguna Puilar, Salar de Atacama, Chile
Dorador, Cristina1,2,3; Fink, Patrick4; Hengst, Martha3,5; Icaza, Gonzalo1,3; Villalobos, Alvaro S.1,8; Vejar, Drina1,3; Meneses, Daniela1,3; Zadjelovic, Vinko1; Burmann, Lisa4; Moelzner, Jana4; Harrod, Chris6,7
通讯作者Dorador, Cristina
来源期刊ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
ISSN0003-6072
EISSN1572-9699
出版年2018
卷号111期号:8页码:1361-1374
英文摘要

The geological, hydrological and microbiological features of the Salar de Atacama, the most extensive evaporitic sedimentary basin in the Atacama Desert of northern Chile, have been extensively studied. In contrast, relatively little attention has been paid to the composition and roles of microbial communities in hypersaline lakes which are a unique feature in the Salar. In the present study biochemical, chemical and molecular biological tools were used to determine the composition and roles of microbial communities in water, microbial mats and sediments along a marked salinity gradient in Laguna Puilar which is located in the "Los Flamencos" National Reserve. The bacterial communities at the sampling sites were dominated by members of the phyla Bacteroidetes, Chloroflexi, Cyanobacteria and Proteobacteria. Stable isotope and fatty acid analyses revealed marked variability in the composition of microbial mats at different sampling sites both horizontally (at different sites) and vertically (in the different layers). The Laguna Puilar was shown to be a microbially dominated ecosystem in which more than 60% of the fatty acids at particular sites are of bacterial origin. Our pioneering studies also suggest that the energy budgets of avian consumers (three flamingo species) and dominant invertebrates (amphipods and gastropods) use minerals as a source of energy and nutrients. Overall, the results of this study support the view that the Salar de Atacama is a heterogeneous and fragile ecosystem where small changes in environmental conditions may alter the balance of microbial communities with possible consequences at different trophic levels.


英文关键词Halophiles Stable isotopes Fatty acids Microbial mats 16S rRNA gene sequencing Flamingos
类型Article
语种英语
国家Chile ; Germany
收录类别SCI-E
WOS记录号WOS:000439732000009
WOS关键词LAKE TEBENQUICHE ; SP-NOV. ; BACTERIAL DIVERSITY ; STABLE-ISOTOPES ; NORTHERN CHILE ; ECOSYSTEM ; ORIGINS ; SALTERN ; DESERT ; CARBON
WOS类目Microbiology
WOS研究方向Microbiology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/207586
作者单位1.Univ Antofagasta, Inst Antofagasta, Lab Complejidad Microbiana & Ecol Func, Antofagasta, Chile;
2.Univ Antofagasta, Fac Ciencias Mar & Recursos Biol, Dept Biotecnol, Angamos 601, Antofagasta, Chile;
3.Ctr Biotechnol & Bioengn CeBiB, Santiago, Chile;
4.Univ Cologne, Workgrp Aquat Chem Ecol, Cologne Bioctr, ZulpicherStr 47b, D-50674 Cologne, Germany;
5.Univ Catolica Norte, Dept Ciencias Farmaceut, Lab Mol Ecol & Appl Microbiol, Antofagasta, Chile;
6.Univ Antofagasta, Fac Ciencias Mar & Recursos Biol, Inst Ciencias Nat Alexander von Humboldt, Antofagasta, Chile;
7.Nucleo Milenio INVASAL, Concepcion, Chile;
8.Ctr Ocean Res Kiel, GEOMAR Helmholtz, Marine Microbiol, Dusternbrooker Weg 20, D-24105 Kiel, Germany
推荐引用方式
GB/T 7714
Dorador, Cristina,Fink, Patrick,Hengst, Martha,et al. Microbial community composition and trophic role along a marked salinity gradient in Laguna Puilar, Salar de Atacama, Chile[J],2018,111(8):1361-1374.
APA Dorador, Cristina.,Fink, Patrick.,Hengst, Martha.,Icaza, Gonzalo.,Villalobos, Alvaro S..,...&Harrod, Chris.(2018).Microbial community composition and trophic role along a marked salinity gradient in Laguna Puilar, Salar de Atacama, Chile.ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY,111(8),1361-1374.
MLA Dorador, Cristina,et al."Microbial community composition and trophic role along a marked salinity gradient in Laguna Puilar, Salar de Atacama, Chile".ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY 111.8(2018):1361-1374.
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