Comparison of soil bacterial diversity and community composition between clear-cut logging and control sites in a temper
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ORIGINAL PAPER
Comparison of soil bacterial diversity and community composition between clear-cut logging and control sites in a temperate deciduous broad-leaved forest in Mt. Sambong, South Korea Byeong-Ju Lee1 • Soo Hyung Eo1
Received: 3 December 2017 / Accepted: 11 October 2018 Northeast Forestry University 2019
Abstract Deforestation or clear-cut logging affects forest ecosystems, including soil microbial communities. The purpose of this study was to investigate the effects of clearcut logging on the soil bacterial community in a temperate deciduous broad-leaved forest on Mt. Sambong, South Korea. We investigated the physicochemical characteristics and bacterial diversity of the soil in clear-cut logging and control sites. The available phosphorus (AP) level in soil was significantly lower in the clear-cut sites than in the control; however, the other physicochemical properties of soil were similar at the two sites. By examining the bacterial 16S rRNA gene using next-generation sequencing, we found that the number of bacterial taxa at the species and phylum level were similar at the control and clear-cut sites. Consistent with the high resilience of bacterial communities and absence of change in the soil physicochemical properties—with the exception of AP—we found similar levels of bacterial diversity at the two sites. Although most taxa showed similar composition ratios at the control and the clear-cut sites, some taxa such as Deltaproteobacteria, Ktedonobacteriales, Myxocccales, Polyangiaceae, Pedosphaera_f, and Solibacter showed
Project funding: This study was supported by R&D Program for Forestry Technology (Project No. S211316L020130) provided by Korea Forest Service. The online version is available at http://www.springerlink.com. Corresponding editor: Chai Ruihai. & Soo Hyung Eo [email protected] 1
Department of Forest Resources, Kongju National University, Yesan, Chungnam 32439, Republic of Korea
differences after clear-cut logging. We conclude that AP was significantly associated with those bacterial taxa that showed differences in their composition ratios following clear-cut logging. Keywords Forest soil Metagenomics Pyrosequencing Soil physicochemical characteristics
Introduction Prokaryotes have an estimated biodiversity of about a million species (Chapman 2009). Some microorganisms are thought to occur in populations numbering more than ten times those of vertebrate species, and are present not only in the atmosphere, soil, and rivers but also in extreme environments such as the deep ocean, glaciers, and ice shelves (Torsvik et al. 2002; Saleem et al. 2016). Microorganisms are global in their distributions and are essential to ecosystem functions such as decomposition, mineralization, and retention of nutrients (Yim et al. 2009; Attard et al. 2010; Sˇtursova´ et al. 2012; Haque et al. 2012; Bowles et al. 2014). Soil-dwelling forest microbes influence each other through interactions that include cooperation, competition, symbiosis, and parasitism. For example, decomposition of organi
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