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Bacterial community structure and soil properties of a subarctic tundra soil in Council, Alaska

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Cited 55 time in scopus
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Bacterial community structure and soil properties of a subarctic tundra soil in Council, Alaska
Other Titles
알래스카 카운실 툰드라 토양 특성과 박테리아 군집 구조
Kim, Hye Min
Larry Hinzman
Lee, Yoo Kyung
Chun, Jongsik
Kim, Ok-Sun
Hong, Soon Gyu
Nam, Sungjin
Hwang, Chung Yeon
Etienne Yergeau
Jung, Ji Young
Bacterial community structure; soil bacteria; soil properties; subarctic tundra soil; tussock tundra
Issue Date
Kim, Hye Min, et al. 2014. "Bacterial community structure and soil properties of a subarctic tundra soil in Council, Alaska". FEMS MICROBIOLOGY ECOLOGY, 89: 465-475.
The subarctic region is highly responsive and vulnerable to climate change. Understanding the structure of subarctic soil microbial communities is essential for predicting the response of the subarctic soil environment to climate change. To determine the composition of the bacterial community and its relationship with soil properties, we investigated the bacterial community structure and properties of surface soil from the moist acidic tussock tundra in Council, Alaska. We collected 70 soil samples with 25 m intervals between sampling points from 0?10 cm and 10?20 cm depths. The bacterial community was analyzed by pyrosequencing of 16S rRNA genes, and the following soil properties were analyzed: soil moisture content (MC), pH, total carbon (TC), total nitrogen (TN), and inorganic nitrogen (NH4+ and NO3-). The community compositions of the two different depths showed that Alphaproteobacteria decreased with soil depth. Among the soil properties measured, soil pH was the most significant factor correlating with bacterial community in both upper- and lower-layer soils. Bacterial community similarity based on jackknifed unweighted UniFrac distance showed greater similarity across horizontal layers than through the vertical depth. This study showed that soil depth and pH were the most important soil properties determining bacterial community structure of the subarctic tundra soil in Council, Alaska.
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