지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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The integrative ecological approaches of chemical assessments, physical habitat modelling, and multi-metric biological health modelling were applied to Gwanpyeong Stream within Gap-Stream watersheds to evaluate environmental impacts on the constructions of residential and commercial complex. For the analysis, the surveys conducted from 45 sites of reference streams within the Gap-Stream watershed and 3 regular sites during 2009 - 2010. Physical habitat health, based on the habitat model of Qualitative Habitat Evaluation Index(QHEI) declined from the headwaters(good - fair condition) to the downstream(poor condition). Chemical water quality, based turbidity and electric conductivity(EC), was degraded toward to the downstream, and especially showed abrupt increases, compared to the values of control streams(CS). Also, concentrations of chlorophyll-a in the downstreams were greater compared to the control stream(CS), indicating an eutrophication. Biological health conditions, based on the Index of Biological Integrity(IBI) using fish assemblages, averaged 19.3 which is judged as a fair condition by the biological criteria of the Ministry of Environment, Korea. The comparisons of model metric values in sensitive species and riffle-benthic species on the Maximum Species Richness Line(MSRL) of 45 reference streams indicated a massive disturbances in all sampling locations. Also, tolerance guild and trophic guild analyses suggest that dominances of tolerant species and omnivores were evident, indicating a biological degradation by habitat disturbances and organic matter pollutions. There was no distinct longitudinal variations of IBI model values from the headwater to the downstream in spite of slight chemical and habitat health gradients among the sampling sites. Overall, integrative ecological health(IEH) scores, based on the chemical, physical, and biological parameters, were low compared to the 45 reference streams due to physical and chemical disturbances of massive constructions of the residential and commercial complex. This stream, thus showed a tendency of typical urban streams which are disturbed in the chemical water quality, habitat structures, and biological integrity. Effective stream management plans and restoration strategies are required in this urban stream for improving integrative stream health.
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참고문헌 (39)
참고문헌 신청
Allan, J.D / 1995 / Stream ecology, structure and function of running waters, 1st edition / Chapman & Hall : 388 ~
An, K.G / 2002 / Indirect influence of the summer monsoon on chlorophyll-total phosphorus models in reservoirs: A case study / Ecological Modeling 152 : 191 ~ 203
An, K.G / 2003 / Spatial and temporal variabilities of nutrient limitation based on in situ experiments of nutrient enrichment bioassay / Journal of Environmental Science an
Barbour, M. T. / 1999 / Rapid bioassessment protocols for use in streams and wadeable rivers: Periphyton, benthic macroinvertebrates, and fish, second edition
Hamilton, K / 1984 / Methods to estimate aquatic habitat variables, Environmental evaluation project N : 1 ~ 30
An, K.G / 2002 / Indirect influence of the summer monsoon on chlorophyll-total phosphorus models in reservoirs: A case study / Ecological Modeling 152 : 191 ~ 203
An, K.G / 2003 / Spatial and temporal variabilities of nutrient limitation based on in situ experiments of nutrient enrichment bioassay / Journal of Environmental Science an
Barbour, M. T. / 1999 / Rapid bioassessment protocols for use in streams and wadeable rivers: Periphyton, benthic macroinvertebrates, and fish, second edition
Hamilton, K / 1984 / Methods to estimate aquatic habitat variables, Environmental evaluation project N : 1 ~ 30
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