Research


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Research project (§ 26 & § 27)
Duration : 2017-11-20 - 2018-12-19

The current tyoplogical allocation of selected small brooks in south-east Styria ("Grabenland") according to the WFD scheme will be reviewed. Based on the results of the 2016 Grabenlandbach study, a further investigation of the BQE macrozoobenthos of this river-type will be performed to revise the current typological classifications according to the EU Water Framework Directive (WFD) and the associated Austrian methodology for the assessment of the ecological status (BQE macrozoobenthos). The aim of the planned study is to examine selected streams in their "Inner Differentiation" in more detail by means of additional sampling in order to precise the data. To document the impact of the season on the ecological status class, seven selected investigation sites in the aquatic bioregion 14, "Grazer Feld and Grabenland" will be investigated. One of the main research areas of the BOKU IHG working group Benthic Ecology is the characterization of the special river-type "intermittent waters" on the basis of characteristic MZB species and is working on a WFD-compliant method for the ecological assessment of these waters. In addition qualitative elevations of the Ephemeroptera, Plecoptera and Trichoptera fauna (adult stages) by means of aerial-nets and light-traps at selected investigation sites will be performed.
Research project (§ 26 & § 27)
Duration : 2017-11-01 - 2018-10-31

A synthesis of a variety of research projects dealing with Vienna and its waters will show the changes of the Danube riverine landscapes and of urban tributaries, accounting for the varying roles and functions of water and rivers for the Viennese society. The long-term perspective of several centuries will help to highlight the large scale transformations of water, rivers and the city and trace existing interactions. An environmental history perspective will allow to investigate relations between river dynamic, risk, floods and flood protection practices or to understand their legacies in present landscapes. The project will further analyse and integrate knowledge on water supply and water uses from a spatial perspective using Geographical Information Systems. River engineers, water supply commissions, city planers, fishermen, millers and their pratices and arrangements will be taken into account as major actors.
Research project (§ 26 & § 27)
Duration : 2017-09-11 - 2018-09-10

In 2016 the pH-values raised very high in the Alte Donau due to the massive production of macrophytes and kept hight during a longer period. Raised pH-values over a longtime period can lead to damages of the fish fauna. On the one hand lesions of the gills can occur, on the other hand autointoxication can be a result because of the chemical transformation from ammonium to ammonia. The aim of this project is to analyse the condition factors of several fish species in the Alte Donau, which will be taken via the usage of fishing nets.

Supervised Theses and Dissertations