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Gewählte Master / Diploma Thesis:

Lisa Marie Gregor (2019): Untersuchung der Eigung von Begleitvegetation und Gewässerparameter als Indikator für potentielle Ersatzlebensräume von Stratiotes aloides in den Unteren March-Auen.
Master / Diploma Thesis - Institut für Botanik (Botany), BOKU-Universität für Bodenkultur, pp 85. UB BOKU obvsg FullText

Data Source: ZID Abstracts
Abstract:
This master thesis deals with the search for alternative habitats for the endangered macrophyte Stratiotes aloides (water soldier). The aim is to investigate whether aquatic accompanying vegetation or the water body parameter are suitable indicators to determine the suitability of alternative habitats, or whether other factors are decisive for this. Water soldiers are rare in Austria and the last populations in the Danube floodplains are declining significantly. Therefore, the Donau-Auen National Park started a Species Conservation Programme. One important measure of this programme is the mapping of potential alternative sites and habitats. In this thesis, potentially suitable old river arms in the WWF floodplain reserve `Untere March-Auen‘ were observed and examined of their suitability. The re-establishment itself is not the aim of the project and is also not further planned yet. It should be examined how potential habitats can be characterized and where and how suitable waters can be found. The data from existing water soldier habitats was used to determine the suitability of accompanying vegetation and water body parameters as an indicator. This data was obtained from the other researches on water soldiers in Austria. The same parameters (water temperature, pH level, oxygen content, electrical conductivity and accompanying vegetation) were measured and documented at the investigation sites in the flood plains Untere March-Auen and compared with the data of the existing water soldier habitats. Neither the accompanying vegetation nor the analyzed water body parameter were significant enough to be used as an indicator of suitability of an alternative habitat for the water solider. Therefore, additional site factors were examined and compared to the existing Stratiotes aloides habitats to determine the suitability of the sites as potential habitats.

Beurteilende(r): Bernhardt Karl Georg
1.Mitwirkender: Rasran Leonid

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