Journal of the Korean Society of Environmental Restoration Technology (한국환경복원기술학회지)

The Korea Society of Environmental Restoration Technology (한국환경복원기술학회)
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Effect of Earthworms on Collembola Abundance in Temperate Forest Soil Ecosystem

온대 숲 토양 생태계에서 지렁이가 톡토기류 개체수에 미치는 영향

  • Lee, Ju-Hyung (Department of Biology Education, Seoul National University) ;
  • Park, Ji-Hyun (Department of Biology Education, Seoul National University) ;
  • Yoo, Ji-Yeon (Department of Biology Education, Seoul National University) ;
  • Han, Su-Hyun (Department of Biology Education, Seoul National University) ;
  • Nam, Bo-Eun (Department of Biology Education, Seoul National University) ;
  • Kim, Jae-Geun (Department of Biology Education, Seoul National University)
  • Received : 2010.11.09
  • Accepted : 2010.12.05
  • Published : 2010.12.31
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Abstract

Earthworm, a prominent ecosystem engineer within many terrestrial ecosystems, can exert profound influences on various abiotic/biotic environments through bioturbation processes such as burrowing, casting and mixing of litter and soil. In this study, we investigated how the presence or absence of earthworm (Oligochaeta) can alter the soil physico-chemical conditions and ultimately the distribution and abundance of Collembola which constitutes a large proportion of the soil fauna. During September 2010, soil organisms along with soil samples were collected from randomly installed 20 plots in Mt. Gwan-ak. We examined the differences in the abundance of Collembola among plot samples in respect to the presence/absence of earthworm and soil physico-chemical conditions (i.e., pH, $PO_4^{3-}$, $NO_3^{2-}$, organic matter (OM), electrical conductance and water content). Analysis of soil physico-chemical environment revealed a significantly higher organic matter content and electrical conductance in plots with earthworm compared to plots without earthworm. Abundance of Collembola were not only higher in plots with earthworm than in plots without earthworm, but were also positively correlated with availability of OM present in the environment. The results suggest that positive impacts of earthworm on the abundance of Collembola in this study may have been due to their ability to effectively modify soil physico-chemical conditions favored by Collembola. Such conspicuous influence of earthworm's activity on below-ground community suggests their potential significance in forest restoration or revegetation process.

Keywords

References

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