Paleolimnologická rekonštrukcia vývoja vodnej nádrže Veľká Vindšachta s využitím subfosílnych zvyškov pakomárov

Marcela Přidalová

Abstrakt


The thesis deals with reconstruction of ecological changes of the Velká Vindšachta reservoir. The dated sequence of sediment cores span the last  200 years.  A total of 35 taxa were recorded with the most common taxa being Tanytarsus spp., Procladius spp. and P. nubeculosum-type.  The chironomid assemblages was divided into three zones:               VIND-Z1 contained extremely low number of chironomid head capsules and taxa. In VIND-Z2 the number of taxa and head capsules gradually increased. Procladius spp. and Tanytarsus spp. predominated, and taxa such as Cricotopus cylindraceus-type, Cricotopus sp., R. effusus-type, Psectrocladius barbatipes-type and Eukiefferiella sp. occurred just in this zone and disappeared in the surface sediment samples. The typical features of VIND-Z3 were high diversity and the lasting dominance of Procladius spp., Tanytarsus spp. and P. nubeculosum-type. This zone was characterized by a significant increase of new taxa such as Ablabesmyia spp., Microchironomus sp., Prodiamesa olivacea, Psectrotanypus varius and T. bavarica-type.

 

Keywords:Chironomidae, paleolimnology, multi-proxy approach, mining activity, manmaid reservoir



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