05 Belkova F-RG.qxp
Summary. The micromorphological structure of microbial mats (biomats) from the hot springs of the Vilyuchinskaya hydrothermal system, Kamchatka Peninsula, Russia, were investigated. The Vilyuchinskie hot springs had a discharge temperature of 55-56°C and Na-Ca-HCO 3 -type waters rich in silicic and...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1044.7710 2023-05-15T16:59:15+02:00 05 Belkova F-RG.qxp Natalia L Belkova Julia R Zakharova Kazue Tazaki Viktor M Okrugin Valentina V Parfenova N L Belkova Xavier1 The Pennsylvania State University CiteSeerX Archives 2004 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1044.7710 http://scielo.isciii.es/pdf/im/v7n3/original1.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1044.7710 http://scielo.isciii.es/pdf/im/v7n3/original1.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://scielo.isciii.es/pdf/im/v7n3/original1.pdf text 2004 ftciteseerx 2020-04-05T00:16:33Z Summary. The micromorphological structure of microbial mats (biomats) from the hot springs of the Vilyuchinskaya hydrothermal system, Kamchatka Peninsula, Russia, were investigated. The Vilyuchinskie hot springs had a discharge temperature of 55-56°C and Na-Ca-HCO 3 -type waters rich in silicic and boric acids. Water and biomats had high concentrations of Fe, Mn, Sr, and As. Enumeration of total bacterial abundance (TBA) demonstrated a low density of bacterial populations. However, the fractions of metabolically active bacteria and respiring iron-oxidizing bacteria in the hot-spring water were high, comprising 68 and 21% of TBA, respectively. Scanning electron microscopy equipped with an energy dispersive X-ray spectrometer (SEM-EDX) showed that unicellular rod-shaped bacteria about 5-µm long predominated in the brown biomats. The mineral capsules of these bacteria contained large amounts of Fe and Si. Extracellular and intracellular particles were observed by transmission electron microscopy. Fe-oxidizing bacteria were isolated from the biomats on agar plates with selective medium. Therefore, it can be concluded that microorganisms inhabiting the biomats of the Vilyuchinskie hot springs are essential for the deposition of Fe-minerals at neutral pH. [Int Microbiol 2004; 7(3):193-198] Text Kamchatka Kamchatka Peninsula Unknown Kamchatka Peninsula ENVELOPE(160.000,160.000,56.000,56.000) |
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English |
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Summary. The micromorphological structure of microbial mats (biomats) from the hot springs of the Vilyuchinskaya hydrothermal system, Kamchatka Peninsula, Russia, were investigated. The Vilyuchinskie hot springs had a discharge temperature of 55-56°C and Na-Ca-HCO 3 -type waters rich in silicic and boric acids. Water and biomats had high concentrations of Fe, Mn, Sr, and As. Enumeration of total bacterial abundance (TBA) demonstrated a low density of bacterial populations. However, the fractions of metabolically active bacteria and respiring iron-oxidizing bacteria in the hot-spring water were high, comprising 68 and 21% of TBA, respectively. Scanning electron microscopy equipped with an energy dispersive X-ray spectrometer (SEM-EDX) showed that unicellular rod-shaped bacteria about 5-µm long predominated in the brown biomats. The mineral capsules of these bacteria contained large amounts of Fe and Si. Extracellular and intracellular particles were observed by transmission electron microscopy. Fe-oxidizing bacteria were isolated from the biomats on agar plates with selective medium. Therefore, it can be concluded that microorganisms inhabiting the biomats of the Vilyuchinskie hot springs are essential for the deposition of Fe-minerals at neutral pH. [Int Microbiol 2004; 7(3):193-198] |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Natalia L Belkova Julia R Zakharova Kazue Tazaki Viktor M Okrugin Valentina V Parfenova N L Belkova Xavier1 |
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Natalia L Belkova Julia R Zakharova Kazue Tazaki Viktor M Okrugin Valentina V Parfenova N L Belkova Xavier1 05 Belkova F-RG.qxp |
author_facet |
Natalia L Belkova Julia R Zakharova Kazue Tazaki Viktor M Okrugin Valentina V Parfenova N L Belkova Xavier1 |
author_sort |
Natalia L Belkova |
title |
05 Belkova F-RG.qxp |
title_short |
05 Belkova F-RG.qxp |
title_full |
05 Belkova F-RG.qxp |
title_fullStr |
05 Belkova F-RG.qxp |
title_full_unstemmed |
05 Belkova F-RG.qxp |
title_sort |
05 belkova f-rg.qxp |
publishDate |
2004 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1044.7710 http://scielo.isciii.es/pdf/im/v7n3/original1.pdf |
long_lat |
ENVELOPE(160.000,160.000,56.000,56.000) |
geographic |
Kamchatka Peninsula |
geographic_facet |
Kamchatka Peninsula |
genre |
Kamchatka Kamchatka Peninsula |
genre_facet |
Kamchatka Kamchatka Peninsula |
op_source |
http://scielo.isciii.es/pdf/im/v7n3/original1.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1044.7710 http://scielo.isciii.es/pdf/im/v7n3/original1.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766051476917977088 |