Marker Wadden

Marker Wadden is an island group of nature islands located in the Markermeer. The islands are made with excess sediment from the lake bottom. They have been thoroughly investigated over the past five years (2017-2022). The research focused on the themes of building with fine sediment, ecosystem development and governance.

The Marker Wadden were constructed to combat the loss of biodiversity in the area.  Swirling and suspended sediment in the shallow lake had negative effects on the food web. Construction has reduced the upwelling and created new areas on and above the water for nature development.

Research has been carried out continuously over the past five years. This resulted in a synthesis report and also a policy evaluation. Both can be downloaded on this page.

The infographic below briefly summarises the research questions and the facts & figures from the project (2022).