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금강수계의 토지이용 및 수질구배에 따른 돌부착 돌말류의 분포특성Distribution of Epilithic Diatom Communities in Relation to Land-Use and Water Quality in the Geum River System, South Korea

Other Titles
Distribution of Epilithic Diatom Communities in Relation to Land-Use and Water Quality in the Geum River System, South Korea
Authors
조인환황순진김백호김용재
Issue Date
May-2014
Publisher
한국물환경학회
Keywords
Cluster Analysis; Epilithic Diatom; Geum River System; Indicator Species Analysis; Land-use; Water Quality
Citation
한국물환경학회지, v.30, no.3, pp.283 - 291
Indexed
KCI
Journal Title
한국물환경학회지
Volume
30
Number
3
Start Page
283
End Page
291
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/144664
DOI
10.15681/KSWE.2014.30.3.283
ISSN
2289-0971
Abstract
To study the distribution characteristics of diatom communities in relation to the gradient of water quality and land-use, water samples and epilithic diatoms were collected from 90 sites including mainstream and tributaries, in the Geum River System (GRS) during no rainfall, May 2011. Of 239 taxa identified, Achnanthes convergens and Cymbella minuta were dominated over all the sites. Cluster analysis on the GRS divided into three groups. Group 1 (G1) is the mountainous upstream, a relatively good water quality, and mainly consisted of saproxenous species. Group 2 (G2) is the urban sites, polluted (high in electric conductivity, total phosphate and soluble reactive phosphorus), and saproxenous and common species. Group 3 (G3) is the agriculture sites, and polluted (turbidity, total nitrogen, nitrate), and saprophilous species. There were some discrepancies between abiotic and biotic variables in GRS; biologically similar between G1 and G2, but abiotically similar between G2 and G3. These differences may attribute to not only physiological characteristics of diatom cells, but complicate relationships between microhabitat and water quality. Thus, an urgent development of generalized or standardized methods to diminish the differences between epilithic diatom community and environments is advent.
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