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Culturable bacteria community development in postglacial soils of Ecology Glacier, King George Island, Antarctica

Zdanowski, Marek K and Żmuda-Baranowska, Magdalena J and Borsuk, Piotr and Świątecki, Aleksander and Górniak, Dorota and Wolicka, Dorota and Jankowska, Katarzyna M and Grzesiak, Jakub (2013) Culturable bacteria community development in postglacial soils of Ecology Glacier, King George Island, Antarctica. Polar Biology, 36 (4). pp. 511-527. ISSN 0722-4060

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Official URL: http://link.springer.com/article/10.1007%2Fs00300-...


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, DGGE). 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 (CB), 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.

Item Type:Article
Additional Information:© The Author(s) 2012. This article is published with open access at Springerlink.com
Subjects:Q Science > QR Microbiology
Divisions:Department of Antarctic Biology
ID Code:678
Deposited By: prof. Marek K Zdanowski
Deposited On:18 Apr 2014 07:29
Last Modified:05 Nov 2014 09:02

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