Full metadata record

DC FieldValueLanguage
dc.identifier.citationWATER, v. 7, NO 12, Page. 6702-6718en_US
dc.description.abstractThis study explores the relationships between environmental factors and the distribution of epilithic diatoms in 161 estuaries of three coastal areas on the Korean peninsula. We investigated epilithic diatoms, water quality, and land use in the vicinities of the estuaries during the months of May 2012, 2013 and 2014, because Korea is relatively free from the influences of rainfall at that time of year. We recorded 327 diatom taxa from the study sites, and the assemblage was dominated by members of the Naviculaceae. Bacillariaceae accounted for the largest proportion of diatoms, and Nitzschia inconspicua (18%) and N. frustulum (9.6%) were the most dominant species. A cluster analysis based on epilithic diatom abundance suggested that the epilithic diatom communities of Korean estuaries can be classified into four large groups (G) according to geography, as follows: Iathe East Sea watershed, Ibthe eastern watershed of the South Sea, IIathe West Sea watershed, and IIbthe western watershed of the South Sea. The former two groups, Ia and Ib, showed higher proportions of forest land cover and use, higher species occurrence, lower salinity, lower turbidity, and lower concentrations of nutrients than the latter two groups, while the latter groups, IIa and IIb, had higher proportions of agricultural land cover and use, higher electrical conductivity, higher turbidity, higher concentrations of nutrients, and lower species occurrence. The environmental factors underlying the distribution of epilithic diatoms, representative of each region, are as follows: dissolved oxygen and forest land cover and use for Reimeria sinuate and Rhoicosphenia abbreviate of the East Sea (ES), salinity and turbidity for Tabularia fasciculate of the West Sea (WS), and biochemical oxygen demand (BOD) and nutrients for Cyclotella meneghiniana of the WS. On the other hand, the most influential environmental factors affecting the occurrence of indicator species showing the highest indicator values (˃60%) of each group were electrical conductivity for Navicula saprophila and Reimeria sinuate of Ia, and turbidity for Encyonema minutum of IIa. Collectively, the distribution of epilithic diatom communities inhabiting Korean estuaries are determined by geographical factors and water quality, which are in turn influenced by land cover and use, and which differ from east to west.en_US
dc.description.sponsorshipThis study was supported by the Ministry of Environment and the National Institute of Environmental Research (Korea). The authors would like to thank all of the survey members involved in the project for their help in sampling and analyses. The authors also thank the reviewers for their help in improving the scientific quality of the manuscript.en_US
dc.publisherMDPI AGen_US
dc.subjectepilithic diatomsen_US
dc.subjectwater qualityen_US
dc.subjectland use/cover typeen_US
dc.subjectrandom forest modelen_US
dc.titleDistribution of Epilithic Diatoms in Estuaries of the Korean Peninsula in Relation to Environmental Variablesen_US
dc.contributor.googleauthorKim, Ha-Kyung-
dc.contributor.googleauthorKwon, Yong-Su-
dc.contributor.googleauthorKim, Yong-Jae-
dc.contributor.googleauthorKim, Baik-Ho-
dc.sector.departmentDEPARTMENT OF LIFE SCIENCE-


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.