Chemostats are bioreactors used for cultivation of phytoplankton and/or zooplankton. They can be operated as batch (no dilution rate), as chemostat (fixed dilution rate) or as turbidostats (dilution rate dependent on turbidity). They can be operated as open or closed system, and also axenically.

The foundation 'Land van Ons' has obtained a peat meadow area near Leiden to increase biodiversity in this intensively used agricultural area. The goal is not to recreate nature, but to develop sustainable agricultural use of this land with the goal of increasing biodiversity in the area and developing management strategies that optimise its ecological, economic and recreational value.

The Marker Wadden is a newly constructed archipelago in lake Markermeer, which aims to improve the lake’s degrading food web by stimulating primary productivity. The archipelago consists of five islands that add a currently missing habitat type to the lake: shallow, sheltered waters with high nutrient availability and gradual land-water transitions.

Two of the most pervasive human impacts on ecosystems are alteration of global nutrient budgets and changes in the abundance and identity of consumers. In spite of the global impacts of these human activities, there have been no globally coordinated experiments to quantify the general impacts on ecological systems. The Nutrient Network (NutNet) is a grassroots, global research effort to address these questions within a coordinated research network comprised of more than 130 grassland sites worldwide.