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News archive



European Union Water Initiative Plus

After 3 years the EUWI + project is coming to an end. Despite Corona and political turmoil, DWS Hydro-Ökologie was able to successfully support several countries in Eastern Europe and the Caucasus in implementing the EU Water Framework Directive on behalf of the Environment Agency Austria.

Link: https://www.euwipluseast.eu/en/


Limnological sampling at the Wienfluss

On behalf of the Stadt Wien – MA 45 Wiener Gewässer we carried out studies on the macrozoobenthos and phytobenthos community in the heavily modified section of the Wienfluss. Sampling in summer was very succesfull!


Mowing season at the Old Danube

Also this year we are mowing macrophytes at the Old Danube


Influence of the otter on fish stocks in the river Lafnitz

Presentation of the project in Österreichs Fischerei Februar/März 2020


Start of the sampling season 2020…

Running-waters samplings and fishing in the early year requires good equipment against the cold


Expertise transfer Paraguay – Austria

Their Excellencies, Cesar Ariel Oviedo Verdún (Minister of Environment of Paraguay) as well as the Paraguayan Ambassador and former Minister of Environment Dr. Juan Francisco Facetti, were received to exchange experiences in Vienna! The City of Vienna / Wiener Gewässer and DWS Hydro-Ökologie reported on the condition, development and in particular the restoration of the Old Danube. Paraguay’s capital Asunción (1.9 million inhabitants in the metropolitan area) is located directly on the Paraguay River. The framework conditions are therefore comparable. An inspiring and constructive exchange!


DWS Hydro Ökologie on excursion!!!

Decelerated and eco-friendly we went on the DWS company excursion with the Mariazellerbahn to the Gemeindealpe in Mitterbach. On the mountain carts we finally came in the speed rush 🙂

A beautiful autumnal day!


Newsletter No. 2 INTERREG Project REBEN

The newsletter No. 2 of the INTERREG projects REBEN is available!



Schulvormittag Naturparkschule St.Martin an der Raab

Project day nature park school St. Martin an der Raab


Contamination of Lake Neusiedl with anthropogenic trace substances: considerations on their origin and behaviour


Pathways, chemical processes and long-term changes of nutrients in Lake Neusiedl


Rare fish species in the reed belt of Lake Neusiedl

The mouth of the river Wulka into the reed belt of Lake Neusiedl is one of the least accessible habitats in eastern Austria – and therefore largely unknown in terms of fish ecology. During an electric fishing campaign at the end of August in the framework of the EU-INTERREG project REBEN an astonishingly rich variety of species could be detected: from typical lake species such as rudd and whute bream on stagnophile specialists such as European weatherfish, crucian carp, tench and European bitterling to running water species such as chub.


Joint Danube Survey 4

The investigation of the Danube River from the source to the mouth is the greatest transboundary river research worldwide and takes place every six years. Like in the previous surveys, the DWS Hydro-Ökologie was part of the team of experts. In July sampling was carried out between Jochenstein and the Hungarian border.


Water plants mowing season 2019 started

The DWS Water Management GmbH specialises in the mowing aquatic plants (macrophytes) and reed as well as the pumping out of soft sediment from the bottom of standing waters. With our weed harvesters we cut and remove macrophytes (creepers, weed, swimming algae or simply aquatic plants) and reed. This is carried out for clearing surfaces for swimmers and boats, for removing nutrients from the water and for landscape maintenance. In April 2019, this year’s mowing season started on the Old Danube. The work will be carried out on behalf of the City of Vienna, MA 45.

Link: http://www.dws-gm.at/


Newsletter No. 1 INTERREG Project REBEN

The newsletter No. 1 of the INTERREG projects REBEN is available!