caa a22 4500 467905274 CHVBK 20180406152832.0 cr unu---uuuuu 170328e20060101xx s 000 0 eng 10.1007/s10661-006-7666-6 doi (NATIONALLICENCE)springer-10.1007/s10661-006-7666-6 Using Epilithic Diatom Communities to Assess Ecological Condition of Xiangxi River System [Elektronische Daten] [Tao Tang, Qinghua Cai, Jiankang Liu] Assessment method for ecological condition of Xiangxi River system was studied by using 13 candidate metrics of epilithic diatom which can reflect conditions in pH, salinity, nitrogen uptake metabolism, oxygen requirements, saprobity, trophic state, morphological character and pollution tolerant capability etc. By one-way ANOVA, the metrics of relative abundance of acidobiontic algae (ACID), freshwater algae (FRESH), high oxygen requirement (HIGH-O), eutraphentic state (EUTRA) and mobile taxa (MOBILE) were suitable for distinguishing sites in different conditions. Then, the river diatom index (RDI) composed of these five metrics was used to evaluate ecological condition of the river. The results showed that the healthiest sites were in the Guanmenshan Natural Reserve (with the mean RDI of 79.73). The sites located in tributary of Jiuchong River also owned excellent state (mean RDI of 78.25). Mean RDI of another tributary - Gufu River and the main river were 70.85 and 68.45 respectively, and the unhealthiest tributary was Gaolan River (with mean RDI of 65.64). The mean RDI for all the 51 sites was 71.40. The competence of RDI was discussed with comparison of evaluation results of DAIpo and TDI, it can be concluded that multimetrics is more competent in assessment task. Springer Science + Business Media, Inc., 2006 ecological condition nationallicence epilithic algae nationallicence river diatom index nationallicence Xiangxi River nationallicence Tang Tao State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, P.R. China aut Cai Qinghua State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, P.R. China aut Liu Jiankang State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, P.R. China aut Environmental Monitoring and Assessment Kluwer Academic Publishers 112/1-3(2006-01-01), 347-361 0167-6369 112:1-3<347 2006 112 10661 https://doi.org/10.1007/s10661-006-7666-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10661-006-7666-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tang Tao State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, P.R. China aut NATIONALLICENCE 700 1- Cai Qinghua State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, P.R. China aut NATIONALLICENCE 700 1- Liu Jiankang State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, P.R. China aut NATIONALLICENCE 773 0- Environmental Monitoring and Assessment Kluwer Academic Publishers 112/1-3(2006-01-01), 347-361 0167-6369 112:1-3<347 2006 112 10661 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer