It is estimated that there are 1,000 to 2,000 species of nematodes in the Netherlands, in a variety of biotopes in terrestrial, aquatic, and marine soils.
Status Report Dutch Biodiversity
This page provides information about the state of the Dutch Biodiveristy by highlighting the Status Report study cases for 2025
Case Studies
Dutch biodiversity is not doing well. This is having a direct impact on our living environment. Existing policies provide a foundation for a positive, biodiverse future, but their success depends on how they are implemented. To achieve the defined recovery targets, we need to use all the resources we have at our disposal. The latest scientific insights and monitoring techniques can serve as instruments to collectively turn the tide.
Butterflies and moths
This group consists of the diurnal butterflies and the much more numerous, nocturnal moths. Whereas we have been observing butterflies for more than 100 years, the number ofre is still much to discover about moths.
Arachnids
In the Netherlands, mites are the largest group with about 1,557 species, while spiders are the best known with 705 species. In addition, harvestmen and ticks belong to this group, as well as pseudoscorpions (23 species) and short-tailed whip scorpions. The numbers of the latter are unknown. Because of their tropical origin, they are found exclusively in greenhouses.