Spatio-temporal pattern of the Chironomidae community: toward the use of non-biting midges in bioassessment programs |
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Authors: | Djuradj Milošević Vladica Simić Milica Stojković Dubravka Čerba Dejan Mančev Ana Petrović Momir Paunović |
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Affiliation: | 1. Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Ni?, Visegradska 33, 18000, Ni?, Serbia 2. Institute of Biology and Ecology, Faculty of Science, University of Kragujevac, Radoja Domanovica 12, 34000, Kragujevac, Serbia 3. Department of Biology, University of J. J. Strossmayer in Osijek, Cara Hadrijana 8A, 31000, Osijek, Croatia 4. Department of Computer Sciences, Faculty of Sciences and Mathematics, University of Ni?, Visegradska 33, 18000, Ni?, Serbia 5. Institute for Biological Research “Sini?a Stankovi?”, University of Belgrade, Bulevar despota Stefana 142, 11000, Belgrade, Serbia
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Abstract: | We employed the self-organizing map (SOM) method to investigate the spatio-temporal pattern of the Chironomidae community in the Southern Morava River basin (Serbia) and to examine to what extent the Chironomidae community is affected by environmental factors. Additionally, this study explores the problems of utilizing chironomids in bioassessment programs. The SOM analysis of the chironomid community data produced 3 groups of sites. The indicator species analysis presented indicator taxa for two groups. Twenty taxa (at species, species group and genus level), according to the Kruskal–Wallis test, showed the most pronounced differences among the temporal units. Out of 15 measured environmental parameters, one-way ANOVA pointed out that 10 significantly differ between the groups. Elevation had the most important influence on the chironomid community, also affecting other environmental parameters. According to our findings, the winter season and the periods with high water level are the main sources of natural variability. To avoid such variability and to successfully incorporate Chironomidae in bioassessment programs, we suggest exclusion of the arguable months from monitoring programs. |
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