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.

Fatty acids such as Phospholipid (PLFA), neutral lipid fatty acids (NLFA) and Ergosterol (total fungal biomass) are used to assess microbial biomass and community structure in soil and other types of environmental samples. This facility provides all the equipment and knowledge required for the determination and quantification of PLFA, NLFA and Ergosterol.

Plants and microorganisms emit a wide range of chemically diverse volatile compounds. These volatiles mediate swift chemical interactions and communication in both aquatic and terrestrial environments, and carry out important ecological functions.

The NIOO stable isotope facility is part of the chemical analytical lab, with equipment and facilities to perform stable isotope tracer experiments. Stable isotopes (13C) can be analysed in PLFA, gases (CO2/CH4) , (13C/15N) solid material (e.g. soil, plant material, bird feathers) as well as in DNA and RNA and breath samples of birds (D/H).

The NIOO greenhouse and trace gas analysis facility is part of the chemical analytical lab with equipment and facilities to asses gas concentrations in atmosphere or in soil gas or soil moisture. Gases (CH4, CO2, N2O, CO, H2,C¬2H4 can be measured over a wide concentration range and even to below-atmospheric levels (ppb) or in stable isotope studies (13C/12C in CO2, CH4).

Since 1994, we collect genetic samples from insects (winter moth) and birds (mainly great tit, blue tit, pied flycatcher, oystercatcher and various waterfowl). The location and specifications of a sample can be found in our relational data warehouse. There are more than 170,000 blood samples, feathers and other tissues stored at NIOO. The samples can be used to investigate the genotype of an individual or population in relation to their fenotype.

The sperm lab houses state-of-the-art equipment used for the analysis of sperm.This includes a computer-assisted sperm-analysis (CASA) system for accurate and automatic assessment of sperm motility and a microscope/camera/software combination for digital image analysis of sperm morphology.

This is a facility for keeping waterfowl for behavioural and physiological research. The facility consists of an outdoor aviary and a building for waterfowl indoors.

The Aqua-flex Arena is a fenced terrain (2500 m2; 80 x 32m) for performing outdoor mesoscosm experiments throughout the year, in the immediate promixity of the NIOO Aquatic Laboratories. Experiments can be performed with > 100 experimental units. There is great flexibility in the spatial set up of experimental units.

The limnotrons are twelve stainless steel indoor mesocosms with a high level of control. The dimensions are: 0.97 m in diameter, 1.32 m (side) and 1.37 m (centre) depth, and a maximum volume of 922 L. In addition to the possibility of sampling vertically with specifically designed integrated water samplers, sampling can also be done by using the sampling ports positioned at three depths. The vessels are equipped with automatic sensors (oxygen, temperature, light), which can make pre-programmed depth profiles.