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Culturable bacteria community development in postglacial soils of Ecology Glacier, King George Island, Antarctica
Abstract
Glacier forelands are excellent sites in which to study microbial succession because conditions change rapidly in the emerging soil. Development of the bacterial community was studied along two transects on lateral moraines of Ecology Glacier, King George Island, by culture-dependent and culture-independent approaches (denaturating gradient gel electrophoresis). Environmental conditions such as cryoturbation and soil composition affected both abundance and phylogenetic diversity of bacterial communities. Microbiocenosis structure along transect 1 (severe cryoturbation) differed markedly from that along transect 2 (minor cryoturbation). Soil physical and chemical factors changed along the chronosequence (time since exposure) and influenced the taxonomic diversity of cultivated bacteria, particularly along transect 2. Arthrobacter spp. played a pioneer role and were present in all soil samples, but were most abundant along transect 1. Cultivated bacteria isolated from transect 2 were taxonomically more diverse than those cultivated from transect 1; those from transect 1 tended to express a broader range of enzyme and assimilation activities. Our data suggest that cryoturbation is a major factor in controlling bacterial community development in postglacial soils, shed light on microbial succession in glacier forelands, and add a new parameter to models that describe succession phenomena. © 2012 The Author(s).
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
POLAR BIOLOGY
no. 36,
edition 4,
pages 511 - 527,
ISSN: 0722-4060 - Language:
- English
- Publication year:
- 2012
- Bibliographic description:
- Zdanowski M., Żmuda-Baranowska M., Borsuk P., Świątecki A., Górniak D., Wolicka D., Jankowska K., Grzesiak J.: Culturable bacteria community development in postglacial soils of Ecology Glacier, King George Island, Antarctica// POLAR BIOLOGY. -Vol. 36, iss. 4 (2012), s.511-527
- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s00300-012-1278-0
- Verified by:
- Gdańsk University of Technology
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