When starting a new research project, it is fundamental to known all the studies which has been performed at the site. In the case of Markermeer Lake, at the starting date of the current research some former pilot experiments where still accessible. In particular, two sites were specially interesting for Project 1 pourposes as sediment from Markermeer lake had been consolidating during years

The first site (Kwelderwerken) is located at the western shore of Markermeer lake,  between Warder and Scharman. Sediment has been accumulating and naturally consolidating  in that area  since summer 2013, under the supervision of Bureau Waardenbourg. The concept of this site consists in capturing silt within landscaped compartments, built as brushwood dams, which simulate an artificial marsh process. These dams are parallel and perpendicular to the banks of the lake. Part of the compartments during the construction were  deepened with silt and some sand from the surrounding area. Some openings were made to the dams so that water renewal, natural hydrodynamic processes and waves, and exchange of fishes , aquatic plants and mussels occurs. This site was sampled on 25/11/2014 and 02/12/2014 by the main researcher of this project 1, together withFullbright researcher Helena van der Broek, many parameters were measured and undisturbed cores were further analysied  in the lab at TU Delft

Panoramic view of the Kweldewerken (Picture taken during fieldwork on 25/11/2014)

Panoramic view of the Kweldewerken (Picture taken during fieldwork on 25/11/2014)

The second site (Pampushaven) consist in four basins placed at Pampushaven (near Almere) and designed by Radboud University . The aim of this experiment was to test wetland development under different hydrological regimes and substrates. Experiments started in 2012 and will ended in December 2014. Thus, the site presents also an unique opportunity to study Markermeer soft sediment strength development under different conditions. In the same way, field work was carried out on 02/12/2014 over here by researcher 1, with the help of Helena van der Broek, measuring different physical and chemical parameters and taking undisturbed cores for further analyis.

View of tPampushaven basins (Picture taken during fieldwork on 02/12/2014)

View of tPampushaven basins (Picture taken during fieldwork on 02/12/2014)

Other technical visits

On Tuesday 27/01/2014 Martin Wassen (project leader), Rémon Saaltink and Maria Barciela went to the pilot island of Natuurlijker Markermeer IJmeer (NMIJ) to find out about its potential to host experiments.

Commissioned by RWS Central Netherlands Royal HaskoningDHV,NMIJ  from 2010 to 2015 conducts a research program that should determine which investments in nature are the most promising for realizing a robust ecosystem and climate resilient water system in the Markermeer-IJmeer

NMIJ Pilot island (picture taken from Rijkswaterstaat website)

NMIJ Pilot island (picture taken from Rijkswaterstaat website)

You can find more information about former research in Markermeer lake in subproject 3 tab and Rijkswaterstaat site

Pictures from the field campaign at Kwelderwerken (and some of the cores!):

Pictures from the field campaign at Pampushaven (and some of the cores!):