Bacterial diversity at a shallow-water hydrothermal vent (Espalamaca) in Azores Island
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Date
2018Author
Rajasabapathy, R.
Mohandass, C.
Bettencourt, R.
Colaco, A.
Goulart, J.
Meena, R.M.
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A low-temperature shallow-water hydrothermal vent field was discovered during the summer of 2010 in the Faial-Pico channel off the Espalamaca headland, Faial Island, Azores, Portugal, NE Atlantic. The present study analyses bacterial communities present in shallow-water hydrothermal vent of Espalamaca using SSU rRNA-based clone library approach. Clones of shallow vent sediment sample revealed the dominance of Proteobacteria (including -, -, -, -, - subdivisions) and Bacteroidetes with 36% and 28% of the whole community respectively. The dominance of --Proteo-bacteria is the unique characteristic of this shallow vent and it coincides with the South Tonga Arc and Bahía Concepción (Pacific Ocean), whereas --Proteobacteria groups were reported to be high in the majority of the hydrothermal vents. Though the sampling sites of the venting and non-venting regions of Espalamaca were only 500 m apart, high variation (>80%) of phylotypes was found between the regions.
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