IAHS Charles University, Faculty of Science International Hydrological Programme The International Association for Ecology Gesellschaft für Ökologie; Ecological Society of Germany, Austria and Switzerland Società Italiana di Ecologia, Italian Society of Ecology USGS International Society for Subsurface Microbiology

  Nederlandse Hydrologische Vereniging, Netherlands Hydrological Society NecoV, Netherlands-Flemish Society for Ecology British Ecological Society Umweltbundesamt, the expert authority of the federal government in Austria for environmental protection and environmental control Vienna City Administration Federal Ministry of Agriculture, Forestry, Environment and Water Management Wiener Wasserwerke, water supply company of Vienna

Entry Visum

The participants from some countries may need a visum to enter Austria. It is recommended that you check the present situation, requirements and conditions of its provision.

For some countries the visum is issued without an invitation letter from the conference organizers.

For other countries an invitation letter from the conference organizers is required. If such invitation letter is required, implying some sort of guarantee then:
- the organizers will, in principle, not issue an invitation letter to those who do not have an accepted presentation (oral, poster) at the conference;
- the organizers will, in principle, not issue an invitation letter to accompanying persons.
The reason for not providing an invitation letter is that the organizers cannot run any risk possibly associated with a guarantee.