Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XIII
Written by Eleonora FIKOVSKA, Dimitar KOZUHAROV
The aim of this paper is to present some unpublished data from studies of zooplankton complexes in Mandra Reservoir during the period 2020-2021 at 7 research sites. It analyses whether physicochemical parameters pH, dissolved oxygen and conductivity significantly influence the occurrence of zooplankton in a reservoir. At the time of the investigation, 33 taxa of rotifers, 18 taxa of Cladocera, and 12 taxa of Copepoda were noted, and 4 taxa from Protozoa too. Canonical Correspondence Analysis (CCA) and biocoenological analyses were performed. In conclusion, we can say that in this shallow holopolymictic basin, no strong correlation was found between the grouping of zooplankton and the measured values for pH, dissolved oxygen and electrical conductivity. The dominant analysis reflects the dynamics in the dominant complexes of zooplankton in accordance with the conditions in the ecotonic zones between the Mandra Reservoir and the inflowing rivers.
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