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Publication

Acta159_06_Fischer-et-al

U:\WiFo\BioOffice\NPDA\DATENQUELLEN\Odonata\e_Fischer_Libellen_Lobau_2017_bis_2020

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Iris Fischer, Andreas Chovanec,Victoria Kargl, Marcia Sittenthaler, Helmut Sattmann, Elisabeth Haring

File (digital)

2023

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In this study, the ecological status of the water bodies in the Viennese part of the Danube Floodplain National Park, the Viennese Lobau, was assessed from a dragonfly ecology perspective. The surveys for this were conducted in 2017, 2018 and 2020. The assessment was based on the comparison of the status quo with the water body type-specific reference coenosis, based on a classification of the Lobau waters using the Lorenzo map (surveyed 18161817). The reference coenosis was dominated by rheophilous species and dragonfly species that depend on dynamic waters with fluctuating water levels. Due to the low abundance of stillwater habitats, limnophilic species played only a minor role in the reference situation. The dragonfly fauna recorded during the study 43 dragonfly species, with 39 of them autochthonous consists for the most part (74%) of species with a distribution focus in the limnophilic range. Rheophilic species and species adapted to strongly fluctuating water levels made up only a small part of the species spectrum and also occurred (especially in the Upper Lobau) only to a very limited extent. Due to this, the dragonfly ecological status of the waters in the Lobau was assessed as poor".