Nature reports

Biology students from Leiden University have discovered two tree frog species in the Dutch coastal dunes that do not occur there naturally. A special DNA-technique revealed these potentially harmful tree frogs. Remarkable, but..

Citizen Scientists around the world have been counting young eels in an International Eel Count. Today, at World Fish Migration Day, we present the preliminary outcomes which give insight in recruitment numbers and contribute to..

The migration of European and American eel severely declined. Therefore a lot of effort is being made to develop knowledge and to take conservation measures. Citizen scientists play an important role in monitoring and helping eels..

Last year, Rijkswaterstaat (part of the Dutch Ministry of Infrastructure and the Environment) carried out major repairs on some parts of the dykes of the former island of Marken in the IJsselmeer. Because this snake hibernates in..

If all the amphibians that were helped over the road in the Netherlands were put nose to tail, there would be a queue of nearly 19 kilometres, roughly the distance between Amsterdam and Utrecht; an increase of 2.5 kilometres..

In 2015, for the first time ever, the Adder was observed throughout the year in National Park De Meinweg, in the southern Dutch province of Limburg, even in December! This is now clear from recently processed data from the Snake..

The new Red Data List for fish was published on January 1st 2016. RAVON carried out the analyses for species associated with fresh water. Of the more than 40 species that reproduce within the Netherlands, 19 appear on the new..