Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Recolonization of benthic macroinvertebrates after anthropogenic disturbance in natural streams, South Korea

  • Chun, Seung-Phil (Faculty of Environmental Science and Ecological Engineering, Korea Univ.) ;
  • Chon, Seung-Hoon (Dept. of Landscapr Architecture, Gachon Univ.) ;
  • Lee, Seung-Oh (Dept. of Urban and Regional Planning, Hongik Univ.) ;
  • Im, Jang-Hyuk (Water/Environment Team, R&D Division, Hyundai E&C Co.) ;
  • Lee, Woo-Kyun (Faculty of Environmental Science and Ecological Engineering, Korea Univ.) ;
  • Kim, Myoung-Chul (SOKN Institute of Ecology and Conservation)
  • Received : 2015.03.27
  • Accepted : 2015.04.25
  • Published : 2015.04.30
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Abstract

Stream ecosystems are closely related to many human activities. Therefore, streams are affected by anthropogenic disturbances such as riverine development and gravel-mining as well as deterioration of water quality. The goal of this study was to elucidate the recolonization process of the macroinvertebrate community after a small-scale anthropogenic disturbance. Field studies were conducted at three sites in a natural stream. The number of recolonizing species tended to increase slightly over time, exceeding the total species number of the control. Ephemeroptera contributed the most to shaping the recolonizing pattern of the entire community. From the result of changes in dominant species, the early recolonizers of each site were the species that showed more frequent occurrence particulary at each sites. But the late recolonizers are Chironomidae at all the sites commonly. This result implies that the actual differences exist among the recolonizing trends of each benthic macroinvertebrate taxon. Collector-gatherers and scrapers comprised about 70% of the recolonizing species. These results indicate that the recolonizing process of an aquatic community after an artificial disturbance depends on the environmental conditions(particularly substratum composition or organic pollution) of the habitat.

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References

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