Comparative microbial ecology of the water column of an extreme acidic pit lake, Nuestra Señora del Carmen, and the Río Tinto basin (Iberian Pyrite Belt)
Entity
UAM. Departamento de Biología MolecularPublisher
Sociedad Española de MicrobiologíaDate
2015-01-01Citation
10.2436/20.1501.01.225
International Microbiology 17.4 (2015): 225-233
ISSN
1139-6709 (print); 1618-1905 (online)DOI
10.2436/20.1501.01.225Funded by
This work has been supported by grants CGL2011-22540 and CGL2009-11059 from the MINECO, Grant 478 from IGME and grant 250-350-IPBSL from ERCProject
Gobierno de España. CGL2011-22540; Gobierno de España. CGL2009-11059Editor's Version
http://dx.doi.org/10.2436/20.1501.01.225Subjects
Acidic pit lakes; Acidophilic microorganisms; Iberian Pyrite Belt; Iron cycle; Río Tinto; Biología y Biomedicina / BiologíaRights
© 2015 Sociedad Española de MicrobiologiaEsta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-CompartirIgual 4.0 Internacional.
Abstract
The Iberian Pyrite Belt, located in Southwestern Spain, represents one of the world’s largest accumulations of mine wastes and acid mine drainages. This study reports the comparative microbial ecology of the water column of Nuestra Señora del Carmen acid pit lake with the extreme acidic Río Tinto basin. The canonical correspondence analysis identified members of the Leptospirillum, Acidiphilium, Metallibacterium, Acidithiobacillus, Ferrimicrobium and Acidisphaera genera as the most representative microorganisms of both ecosystems. The presence of archaeal members is scarce in both systems. Only sequences clustering with the Thermoplasmata have been retrieved in the bottom layer of Nuestra Señora del Carmen and one station of Río Tinto. Although the photosynthetically active radiation values measured in this lake upper layer were low, they were sufficient to activate photosynthesis in acidophilic microorganisms. All identified photosynthetic microorganisms in Nuestra Señora del Carmen (members of the Chlamydomonas, Zygnemopsis and Klebsormidium genera) are major members of the photosynthetic eukaryotic community characterized in Río Tinto basin. This study demonstrates a close relationship between the microbial diversity of Nuestra Señora del Carmen pit lake and the diversity detected in the Río Tinto basin, which underlain the influence of the shared mineral substrates in the microbial ecology of these ecosystems
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Google Scholar:González-Toril, E.
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Santofimia, E.
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López-Pamo, E.
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García-Moyano, A.
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Aguilera, Á.
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Amils Pibernat, Ricardo
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