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Extremophilic cyanobacteria from thermo-mineral springs of spas in Atlantic environments

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http://hdl.handle.net/2183/30646
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  • Investigación (FCS) [1295]
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Título
Extremophilic cyanobacteria from thermo-mineral springs of spas in Atlantic environments
Autor(es)
López-Rodríguez, M. Carmen
Asencio, Antonia D.
Meijide-Faílde, Rosa
Torres, Enrique
Data
2022-04-12
Cita bibliográfica
M. Carmen López-Rodríguez, Antonia D. Asencio, Rosa M. Meijide & Enrique Torres (2022) Extremophilic cyanobacteria from thermo-mineral springs of spas in Atlantic environments, Systematics and Biodiversity, 20:1, 2046198
Resumo
[Abstract] The species composition of cyanobacteria assemblages was studied in six thermo-mineral springs of spas in Atlantic environments of Galicia (NW Spain). Two are considered hot (Ta ≥ 40 °C), two intermediate (Ta 20–40 °C) and two cold (Ta ≤ 20 °C), and four contain hydrogen sulphide. A total of 21 taxa (14 genera) have been recorded. Two diversity indices, Shannon index and Evenness were determined. The Shannon–Wiener index ranged between 0.31 and 0.73 and the Evenness index between 0.44 and 0.88. nMDS ordination showed that cyanobacteria assemblage composition was influenced mostly by temperature. Of the species identified, the most diverse genus is Leptolyngbya with four species, followed by Chroococcus with three species and Aphanocapsa, Phormidium and Lyngbya with two species. The most abundant species was Jaaginema angustissimum, followed by Leptolyngbya laminosa and Symploca thermalis. In the two cold springs, seven different species were found, and only Aphanocapsa conferta was common to both springs. Cyanobacterial species were more numerous in the four hot springs, with 15 different species and only Calothrix thermalis common to these hot springs. It is difficult to establish characteristic cyanobacterial flora for the thermo-mineral waters of the Galician springs since there are significant differences in the communities from the six sites studied.
Palabras chave
Atlantic environments
Cyanobacteria
Diversity
Environmental parameters
Galicia (NW Spain)
Spa
Thermo-mineral springs
Thermal-sulphur waters
 
Versión do editor
https://doi.org/10.1080/14772000.2022.2046198
Dereitos
This is an Accepted Manuscript of an article published by Taylor & Francis in Systematic and Biodiversity on 2022, available at: http://www.tandfonline.com/10.1080/14772000.2022.2046198
ISSN
1478-0933

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