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Soil development and bacterial community shifts along the chronosequence of the Midtre Lovenbreen glacier foreland in Svalbard

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Cited 13 time in scopus
Title
Soil development and bacterial community shifts along the chronosequence of the Midtre Lovenbreen glacier foreland in Svalbard
Authors
Kwon, Hye Young
Jung, Ji Young
Kim, Ok-Sun
Laffly, Dominique
Lim, Hyoun Soo
Lee, Yoo Kyung
Subject
Life Sciences & Biomedicine - Other Topics
Keywords
Bacterial successionChronosequenceGlacier forelandHigh arcticSoil development
Issue Date
2015
Citation
Kwon, Hye Young, et al. 2015. "Soil development and bacterial community shifts along the chronosequence of the Midtre Lovenbreen glacier foreland in Svalbard". J. Ecol. Environ., 38(4): 461-476.
Abstract
Global warming has accelerated glacial retreat in the high Arctic. The exposed glacier foreland is an ideal place to study chronosequential changes in ecosystems. Although vegetation succession in the glacier forelands has been studied intensively, little is known about the microbial community structure in these environments. Therefore, this study focused on how glacial retreat influences the bacterial community structure and its relationship with soil properties. This study was conducted in the foreland of the Midtre Lov?nbreen glacier in Svalbard (78.9°N). Seven soil samples of different ages were collected and analyzed for moisture content, pH, soil organic carbon and total nitrogen contents, and soil organic matter fractionation. In addition, the structure of the bacterial community was determined via pyrosequencing analysis of 16S rRNA genes. The physical and chemical properties of soil varied significantly along the distance from the glacier; with increasing distance, more amounts of clay and soil organic carbon contents were observed. In addition, Cyanobacteria, Firmicutes, and Actinobacteria were dominant in soil samples taken close to the glacier, whereas Acidobacteria were abundant further away from the glacier. Diversity indices indicated that the bacterial community changed from homogeneous to heterogeneous structure along the glacier chronosequence/distance from the glacier. Although the bacterial community structure differed on basis of the presence or absence of plants, the soil properties varied depending on soil age. These findings suggest that bacterial succession occurs over time in glacier forelands but on a timescale that is different from that of soil development.
DOI
http://dx.doi.org/10.5141/ecoenv.2015.049
Type
Article
Appears in Collections  
2014-2016, Environmental Change Studies Based on The Arctic Dasan Station: in terms of Geology, Atmospheric Science, and Ecology (14-16) / Lee; Yookyung (PE14030; PE15030; PE16030)
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