Publication details
Taxocenózy jepic (Ephemeroptera), pošvatek (Plecoptera) a chrostíků (Trichoptera) pramenných stružek Západních Karpat
| Title in English | Taxocoenoses of mayflies (Ephemeroptera), stoneflies (Plecoptera) and caddisflies (Trichoptera) of springbrooks in Western Carpathians |
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| Authors | |
| Year of publication | 2010 |
| Type | Conference abstract |
| MU Faculty or unit | |
| Citation | |
| Description | Springbrooks draining spring fens are suitable model systems for different ecological studies due to their relative isolation and stable environment. The aims of this study were to describe and compare species richness and composition of Ephemeroptera, Plecoptera and Trichoptera taxocoenoses in ecologically different types of the Western Carpathian springbrooks draining spring fens. Further, to find the most important environmental factors affecting assemblage composition and to describe habitat preferences of important species. Three series (spring, summer, autumn 2006) of samples from 11 representative sites were collected. Proportions of substratum fractions at each site were estimated and several environmental variables (e.g. water temperature, conductivity, pH, and discharge) were measured. Altogether 33 benthic samples and data from 8 Malaise traps were processed. In total 43 taxa (9 of mayflies, 12 of stoneflies, 22 of caddisflies) were recorded in larval stage and 72 taxa (9 of mayflies, 28 of stoneflies, 35 of caddisflies) in imaginal stage. Based on species composition, four groups of sites were distinguished. The structure of assemblages of these groups was very similar. Stoneflies were the dominant taxon of all assemblages; caddisflies were the second most abundant taxon. The share of mayflies was minimal, except for the tufa-forming springbrooks where mayflies were nearly the same abundant as caddisflies. The habitat preferences of eudominant and dominant species of all groups were described. Substratum fractions (stones, POM, silt, clay) were the most important factors affecting the composition of assemblages. Water chemistry, especially content of Mg, Al and dissolved oxygen, had also an important influence on community composition as well as the depth of water and water temperature. |
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