Composition and Functioning of Microbial Communities Depending on Geochemical Conditions Conference Abstracts
Conference |
Challenges to Our Volatile Planet : Goldschmidt Conference 2009 21-26 Jun 2009 , Davos |
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Journal |
Geochimica et Cosmochimica Acta
ISSN: 0016-7037 , E-ISSN: 0046-564X |
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Output data | Year: 2009, Volume: 73, Number: 13, Pages: A168 Pages count : 1 | ||||||||||
Authors |
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Abstract:
Characteristic properties of formation and functioning of microbial communities depending on temperature, рН, HSand native radionuclides (Rn, 226Ra, 228Ra) were examined by the example of communities of hot springs of Barguzin basin in the Baikal rift zone. Barguzin basin with its hot springs is one of those locations where diverse cyanobacterial communities develop dynamically. All the springs are alkaline-silicate hydrotherms with the nitrogen prevailing in the gas composition. The Alla, Kuchiger and Umkhei springs waters belong to the same type and represent HCO3-SO4-Na according to their major and minor elements composition. These springs are HS--bearing
and low Rn concentrations. Seya spring waters belong to same type but HS concentration in it is lower. The Garga, Gusikha and Uro spring waters are characterized by the absence of HSin the solution and radon content 30-10 eman.
Our study revealed that the constant geochemical condition and low temperature, low HS-, Rn content and the
absence of a strong currrent form the conditions under which thick multilayered mats are being formed. This mats in Seya, Garga and Uro hot springs are characterized by a considerably higher productivity and low species composition. Under unstable geochemical conditions and high temperature, HSgradient heterogeneous microbial communities are being developed. Such communities are thin and multicomponent. Some species develop at high temperature and high HScontent and some species, for example Mastigocladus laminosus, were observed at high Rn content.
Cite:
Bryanskaya A.V.
, Lazareva E.V.
, Barkhutova D.D.
, Taran O.P.
, Zhmodik S.M.
, Repin V.E.
Composition and Functioning of Microbial Communities Depending on Geochemical Conditions
Geochimica et Cosmochimica Acta. 2009. V.73. N13. P.A168. WOS РИНЦ
Composition and Functioning of Microbial Communities Depending on Geochemical Conditions
Geochimica et Cosmochimica Acta. 2009. V.73. N13. P.A168. WOS РИНЦ
Dates:
Published print: | Jun 1, 2009 |
Identifiers:
Web of science | WOS:000267229900348 |
Elibrary | 21271774 |
Citing:
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