Ecology and Resilient Infrastructure

Korean Society of Ecology and Infrastructure Engineering (응용생태공학회)
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Evaluation of Habitat Diversity Changes by Weir Operation of the Sejongbo Weir in Geum River using High-resolution Aerial Photographs

항공사진을 이용한 금강 세종보 수문개방에 따른 서식처 다양도 변화 분석

  • Ock, Giyoung (Department of Ecosystem Assessment, National Institute of Ecology) ;
  • Choi, Mikyoung (International Water Resources Research Institute, Chungnam National University) ;
  • Kim, Jeong-cheol (Department of Ecosystem Assessment, National Institute of Ecology) ;
  • Park, Hyung-Geun (Department of Ecosystem Assessment, National Institute of Ecology) ;
  • Han, Ji Hyun (MOE Committee for Investigation and Evaluation of the Four Major Rivers, Korea Water Resources Corporation)
  • 옥기영 (국립생태원 생태평가연구실) ;
  • 최미경 (충남대학교 국제수자원연구소) ;
  • 김정철 (국립생태원 생태평가연구실) ;
  • 박형근 (국립생태원 생태평가연구실) ;
  • 한지현 (한국수자원공사 환경부4대강조사평가단)
  • Received : 2020.12.14
  • Accepted : 2020.12.18
  • Published : 2020.12.31
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Abstract

This study investigated habitat diversity changes by conducting weir operations at the Sejongbo site in the Geum River basin. High-resolution aerial photographs taken before and after the weir-opening operation were used for habitat analyses. We classified water and bar areas into 17 types, such as lotic habitats, including riffles, runs, and glides, and lentic habitats, including reservoirs, pools, bar-head backwaters, and bar ponds. Then, we estimated each habitat area quantitatively, calculated a habitat diversity index, and established a habitat diversity map. Our results indicated that after the weir-opening operation, lotic habitats and new types of shallow lentic habitats increased in the water area. In addition, for the bar area, bare lands without cultivation increased distinctively. Finally, we observed that the habitat diversity index drastically increased after the weir-opening operation, which could provide a relatively simple channel of diverse habitats.

세종보 수문개방을 통하여 하도내에 다양한 모래톱이 만들어지면서 모래톱의 생태계 가치와 기능에 대한 연구 필요성이 증가하고 있다. 본 연구는 세종보 수문개방 전·후의 하도 내 지형 변화를 생태지형학적으로 분석하여 서식처의 관점에서 보 개방 효과를 규명하고자 하였다. 이를 위해 고해상도 항공사진의 공간분석을 수행하여, 수역과 육역을 17개 서식처 유형으로 분류하여 서식처다양도 지도를 작성하고 서식처다양도 지수를 산정하였다. 연구결과, 보 상류는 개방 전 저수지였던 깊은 정수성 서식처에서, 개방 후에는 여울과 소, 평여울, 완여울 등 유수성 서식처가 증가하고 얕은 정수성 서식처가 나타나는 등 수중 서식처의 유형이 다양해지고 복잡해졌다. 보 하류에서도 모래톱이 확장되면서 식생이 정착되지 않은 나지형 사주가 나타나고, 유수성 서식처가 증가하였다. 이러한 변화들을 종합하면 보 개방후 서식처다양도 지수가 크게 향상되는 것을 실증적으로 규명하였다. 앞으로 이러한 연구를 기반으로 모래톱의 생태계 가치를 하천관리와 복원에 적용할 수 있는 응용생태 분야의 연구기술 개발이 더욱 요구된다.

Keywords

References

  1. Beechie, T.J., Liermann, M., Beamer, E.M., and Henderson, R. 2005, A classification habitat types in a large river and their use by juvenile salmonids. Transactions of the American Fisheries Society 134: 717-729. https://doi.org/10.1577/T04-062.1
  2. Beechie, T.J., Pess, G.R., Imaki, H., Martin, A., Alvarez, J., and Goodman, D.H. 2015. Comparison of potential increases in juvenile salmonid rearing habitat capacity among alternative restoration scenarios, Trinity River, California. Restoration Ecology 23: 75-84. https://doi.org/10.1111/rec.12131
  3. Choi, H.S., Choi, J., and Choi, B. 2020. A case study of the habitat changes for the fish community due to the restoration of pool-riffle sequence. Ecology and Resilient Infrastructure 7:53-62. (in Korean) https://doi.org/10.17820/eri.2020.7.1.053
  4. Fernald, A.G., Landers, D.H., and Wigington Jr, P.J. 2006. Water quality changes in hyporheic flow paths between a large gravel bed river and off-channel alcoves in Oregon, USA. River Research and Applications 22: 1111-1124. https://doi.org/10.1002/rra.961
  5. Frissell, C.A., Liss, W.J., Warren, C.E., and Hurley, M.D. 1986. A hierarchical framework for stream habitat classification: viewing streams in a watershed context. Environmental management 10: 199-214. https://doi.org/10.1007/BF01867358
  6. Garcia, X.F., Schnauder, I., and Pusch, M.T. 2012. Complex hydromorphology of meanders can support benthic invertebrate diversity in rivers. Hydrobiologia 685: 49-68. https://doi.org/10.1007/s10750-011-0905-z
  7. Gurnell, A.M. and Petts, G.E. 2002. Island-dominated landscapes of large floodplain rivers, a European perspective. Freshwater Biology 47: 581-600. https://doi.org/10.1046/j.1365-2427.2002.00923.x
  8. Gurnell, A.M., Rinaldi, M., Belletti, B., Bizzi, S., Blamauer, B., Braca, G., Buijse, A.D., Bussettini, M., Camenen, B., Comiti, F., and Demarchi, L. 2016. A multi-scale hierarchical framework for developing understanding of river behaviour to support river management. Aquatic Sciences 78: 1-16. https://doi.org/10.1007/s00027-015-0424-5
  9. Hawkins, C.P., Kershner, J.L., Bisson, P.A., Bryant, M.D., Decker, L.M., Gregory, S.V., McCullough, D.A., Overton, C.K., Reeves, G.H., Steedman, R.J., and Young, M.K. 1993. A hierarchical approach to classifying stream habitat features. Fisheries 18: 3-12. https://doi.org/10.1577/1548-8446(1993)018<0003:AHATCS>2.0.CO;2
  10. Hyodo, M., Takemon, Y., Sumi, T., Awazu, Y., and Deng, Z. 2014. Influence of spatiotemporal patterns of erosion and deposition processes during floods on riverine habitat suitability. Journal of Japan Society of Civil Engineers 70: 1345-1350.
  11. Kang, T.U. and Jang, C.L. 2020. An experiment on flow simulation depending on opening configuration of weir using a numerical model. Ecology and Resilient Infrastructure 7: 218-226. (in Korean)
  12. Milan, D.J., Heritage, G.L., Large, A.R.G., and Entwistle, N.S. 2010. Mapping hydraulic biotopes using terrestrial laser scan data of water surface properties. Earth Surface Processes and Landforms 35: 918-931. https://doi.org/10.1002/esp.1948
  13. MOE (Ministry of Environment). 2019. Monitoring report of weir operation in the 16 weirs of the 4 major rivers. (in Korean)
  14. Montgomery, D.R. and Buffington, J.M. 1998. Channel processes, classification and response. River Ecology and Management 112: 1250-1263.
  15. Mosselman, E., Angelopoulos, N., Belletti, B., Brouwer, R., Gurnell, A.M., Friberg, N., Kail, J., Reichert, P., and Geerling, G. 2015. Guidance and decision support for cost-effective river and floodplain restoration and its benefits. REFORM(REstoring Rivers FOR Effective Catchment Management) Project Report 6-3. European Commission.
  16. Ock, G. and Takemon, Y. 2010. Estimation of transport distance of fine particulate organic matter in relation to channel morphology in tailwaters of the Lake Biwa and reservoir dams. Landscape and Ecological Engineering 62: 161-169.
  17. Ock, G., Gaeuman, D., McSloy, J., and Kondolf, G.M. 2015. Ecological functions of restored gravel bars, the Trinity River, California. Ecological Engineering 83: 49-60. https://doi.org/10.1016/j.ecoleng.2015.06.005
  18. Palmer, M.A., Menninger, H.L., and Bernhardt, E. 2010. River restoration, habitat heterogeneity and biodiversity: a failure of theory or practice?. Freshwater Biology 55: 205-222. https://doi.org/10.1111/j.1365-2427.2009.02372.x
  19. Takemon, Y. 2005. Life-type concept and functional feeding groups of benthos communities as indicators of lotic ecosystem conditions. Japanese Journal of Ecology 55: 189-197.
  20. Tockner, K., Ward, J., Arscott, D., Edwards, P., Kollmann, J., Gurnell, A., Petts, G., and Maiolini, B. 2003. The Tagliamento River: a model ecosystem of European importance. Aquatic Sciences-Research Across Boundaries 65: 239-253. https://doi.org/10.1007/s00027-003-0699-9
  21. Viparelli, E., Gaeuman, D., Wilcock, P., and Parker, G. 2011. A model to predict the evolution of a gravel bed river under an imposed cyclic hydrograph and its application to the Trinity River. Water Resources Research 47 W02533. https://doi.org/10.1029/2010WR009164
  22. Wadeson, R.A. and Rowntree, K.M. 1998. Application of the hydraulic biotope concept to the classification of instream habitats. Aquatic Ecosystem Health and Management 1: 143-157. https://doi.org/10.1016/S1463-4988(98)00019-0
  23. Ward, J.V., Tockner, K., Arscott D.B., and Claret, C. 2002. Riverine landscape diversity. Freshwater Biology 47: 517-539. https://doi.org/10.1046/j.1365-2427.2002.00893.x
  24. Wyrick, J.R. and Pasternack, G.B. 2014. Geospatial organization of fluvial landforms in a gravel-cobble river: Beyond the riffle-pool couplet. Geomorphology 213: 48-65. https://doi.org/10.1016/j.geomorph.2013.12.040
  25. Yarnell, S.M., Mount, J.F., and Larsen, E.W. 2006. The influence of relative sediment supply on riverine habitat heterogeneity. Geomorphology 80: 310-324. https://doi.org/10.1016/j.geomorph.2006.03.005

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