IJsselmeer en Markermeer - WOT-05-001-006

The management of fresh water systems is an area of shared responsibility between the Ministries of LNV and I&W. To a large extent the national management of fresh waters is framed within international legislation such as European Natura 2000/Habitat Directive, Water Framework Directive and Eel Regulation (nationally translated into Eel management plans, see also ‘Aalonderzoek’).

LNV is responsible for management of the IJsselmeer and Markermeer. In this project data are collected and analysed in order to provide advice on management of the IJsselmeer and Markermeer. The data collection takes account of the requirements indicated in the above mentioned legislation.

project: The most important source of information is collected through an open water research vessel survey in the IJsselmeer and Markermeer, and a sampling programme along the shorelines of these lakes. The surveys provide an assessment of the state of the ecosystem and in particular the fish stocks in these lakes.

The occurrence of salmonids, and other migratory and rare fish species in the IJsselmeer and coastal waters is monitored using fyke catch registrations. A significant part of our monitoring is carried out in close cooperation with commercial fishermen.

Results and products: conducting the field work; support and update of the national database containing fresh water fish data; contribution to website; annual reports with project results.