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Submarine Hydrothermal Vents of the Aeolian Islands: Relationship Between Microbial Communities and Thermal Fluids.
- Source :
-
Geomicrobiology Journal . Jan1999, Vol. 16 Issue 1, p105-117. 13p. 1 Diagram, 3 Charts, 3 Graphs, 1 Map. - Publication Year :
- 1999
-
Abstract
- The relationship between fluid geochemistry and microbial communities was investigated for shallow (< 25 m) submarine hydrothermal vents in the Aeolian Islands (Southern Italy). Thermal waters, gases, and deposits of white filamentous material were collected from 11 sites. The geochemical analyses showed a magmatic component was present in all sampled fluids. The total microbial abundances, evaluated as direct counts of picoplanktonic cells (ranging from 0.2 to 2 mu m in diameter), were between 1.55 107 and 4.18 108 cells per liter. Picophytoplankton (total autofluorescent cells) ranged from 9.6 105 to 7.88 106 cells per liter. Yellow-orange autofluorescent prokaryotes belonging to the cyanobacteria were more abundant than red autofluorescent eukaryotic cells. Chemolithoautotrophic, sulfur-oxidizing, rod-shaped Bacteria were isolated from venting water samples and identified as Thiobacillus -like. Microscopic examination of the white mat deposits showed the presence of filamentous microorganisms. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MICROORGANISM populations
*HYDROTHERMAL vents
Subjects
Details
- Language :
- English
- ISSN :
- 01490451
- Volume :
- 16
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Geomicrobiology Journal
- Publication Type :
- Academic Journal
- Accession number :
- 3961815
- Full Text :
- https://doi.org/10.1080/014904599270794