The aim of this thesis was to compare communities of benthic
macroinvertebrates and measured environmental variables on 24
localities in the Moravian Karst, divided in two ways: caves
with karst springs and polluted with non-polluted. The next aim
was to evaluate, which environmental variables have significant
influence on the macroinvertebrate communities. In this thesis,
seven samples were collected in the Moravian Karst as
supplementary to the data, collected for the bachelor thesis.
Altogether, samples from 24 localities in the Moravian Karst
were collected, specifically: 12 from caves and 12 from karst
springs. Physical and chemical parameters were measured on each
site, also width, depth of the watercourse and percantages of
substrate components were estimated. More complex groups of
macroinvertebrates from bachelor thesis were determined
together with groups from obtained from the last sampling with
great emphasis on water clitellates. Altogether, 3080
individuals of macroinvertebrates in 104 taxa and nine higher
taxonomical groups were recorded. The highest diversity was
found in clitellates, where 470 individuals in 40 taxa were
recorded, often with unique occurrence. No significant
difference was found in macroinvertebrate communities between
compared groups of localities, divided according to pollution.
Environmental variables with significant influence on the
macroinvertebrate community were watercourse bed roughness
(phi8) and calcium concentrations.