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http://dx.doi.org/10.17820/eri.2019.6.1.058

A Case Study of the Habitat Changes due to the Restoration of Low-Flow Channel  

Choi, Jonggeun (Department of Civil Engineering, Sangji University)
Choi, Heung Sik (Department of Civil Engineering, Sangji University)
Choi, Byungwoong (School of Engineering, The University of Newcastle)
Publication Information
Ecology and Resilient Infrastructure / v.6, no.1, 2019 , pp. 58-68 More about this Journal
Abstract
This present study conducted the impact of the restoration of low-flow channel on fish habitat in a reach of the Wonju Stream, Korea. The target species were Zacco koreanus, a dominant species in the middle- and upper-stream of Wonju Stream. The River2D model was used for the computation of the flow and the habitat suitability index model was used to estimate the quantity and quality of fish habitat using habitat suitability curves. In order to restore the study area, the low-flow channel was identified through the bankfull discharge of the study reach, and the best hydraulic section was designed. In addition, various restoration techniques were applied to the low-flow channel through rocks, pool/riffle structures, and the change of the channel width. Simulation results indicated that the restoration of the best hydraulic section effects decreased habitat suitability for the target species. However, when various restoration techniques were applied, the WUA (Weighted Usable Area) was improved by about 11%.
Keywords
Bankfull discharge; Dominant species; Low-flow channel; Physical habitat simulation; Restoration technique;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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