In many countries the Eurasian otter (Lutra lutra) is extinct or numbers are declining; resulting in a classification as “near threatened” on the IUCN’s Red List. In one-third of the European countries, however, conservation efforts, enabled the return of the species or the improvement of weakened populations. …

Het vergt kennis om te bepalen welke methode het meest geschikt is om infiltratie in de bodem te meten, en deze kennis is in de literatuur sterk gefragmenteerd. Op verzoek van Eijkelkamp Agrisearch Equipment is gezocht naar een methode, om de klant de meest geschikte apparatuur te laten vinden. Dit onderzoek …

On a yearly basis, some 750 million cubic meters of groundwater is extracted from the soil for public water supply. In order to ensure the quality of water sources for both current and future needs, this project is going to clarify the influence of land use on groundwater quality in Achterhoek