Microbial communities in a coastal cave: Cova des Pas de Vallgornera (Mallorca, Western Mediterranean)
| Autor: | Freddy Zafra, Jorge Lalucat, Joan J. Fornós, Antonio Busquets, Antoni Merino |
|---|---|
| Přispěvatelé: | European Commission, Govern de les Illes Balears, Ministerio de Ciencia e Innovación (España) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Mediterranean climate
Research groups Brackish pools QH301-705.5 government.political_district Carbonate precipitates Cave Microbial community Biology (General) Anchialine Earth-Surface Processes Balearic islands geography QE1-996.5 geography.geographical_feature_category Fungi Mallorca Geology Littoral cave Archaeology humanities government Christian ministry Ferromanganese deposits |
| Zdroj: | International Journal of Speleology, Vol 43, Iss 2, Pp 205-216 (2014) Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0392-6672 |
| Popis: | As a part of an ongoing project on the role of microbes in the biogeochemistry of Majorcan caves, the species diversity of microbial communities present in cave pools of anchialine waters in the Cova des Pas de Vallgornera (Mallorca, Western Mediterranean) is investigated by a culture-dependent method. Two-hundred and forty-eight strains isolated from this characteristic littoral karst cave environment are identified by whole-cell-MALDI-TOF mass spectrometry and phylogenetically by 16S rRNA gene sequences. Total cell counts and species diversity of the bacterial communities decrease with the distance to the entrance of the cave and to the sea. Strains are mainly identified as members of the Gammaproteobacteria and Actinobacteria. Around 20% of the isolates are able to precipitate carbonates. Calcite is the predominant phase, growing in all the precipitates, although struvite is also found in one Pseudomonas and in one Aspergillus cultures. Differences in crystal habit and growth are observed according to the bacterial species promoting the precipitates. Bacteria associated with multicolored ferromanganese deposits, present in several parts of the cave, are also studied and are identified as Pseudomonas benzenivorans and Nocardioides luteus. The preponderance of Pseudomonas species and the possible contribution of bacteria in calcite deposition are discussed. This research was funded by the Spanish Ministry of Economy and Innovation (MINECO) projects CGL2010-18616, CGL2011-24318 and Consolider CSD2009-00006, as well as funds for competitive research groups from the Government of the Balearic Islands (the last two funds with FEDER cofounding) |
| Databáze: | OpenAIRE |
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