The relationship between habitat factors and aquatic macrophyte assemblages in the Danube river in Serbia
| Autor: | Vukov Dragana, Ilić Miloš, Ćuk Mirjana, Igić Ružica, Janauer Georg A. |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Archives of Biological Sciences, Vol 69, Iss 3, Pp 427-437 (2017) |
| Druh dokumentu: | article |
| ISSN: | 0354-4664 1821-4339 |
| DOI: | 10.2298/ABS160516116V |
| Popis: | Our objectives were to offer insight into the characteristics of the physical environment in the River Danube in Serbia; and to show the relationship between selected environmental factors and the composition and abundance of macrophyte species. The macrophyte survey method followed the European Standard EN 14184, applying Kohler’s five-level descriptive scale. Principal component analysis was carried out to examine the variation in aquatic vegetation, and to analyze the effect of environmental variables on the aquatic vegetation, redundancy analysis was used. To build a simpler model with fewer explanatory variables, yet sufficiently explaining species variability, forward selection of environmental variables was done. Our results confirmed that physical environmental factors significantly influence the establishment and structure of macrophyte vegetation, with the level of hydrological connectivity to the main river channel being the most important, followed by the transparency of the water column, sediment texture and water-flow velocity. In order to inspect the individual relation between best-fitted plant species and each of selected environmental variables, Spearman’s rank correlation coefficients were calculated. We have distinguished plant species with preferences to specific combinations of analyzed factors. Our results provide a background for future, more specific studies on the macrophyte/habitat relationship. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. III43002: Bio-sensing technologies and global systems for the continual research and integrative ecosystem management] |
| Databáze: | Directory of Open Access Journals |
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