1.
Overwinteringsecologie van de smient (Anas penelope)
2.
3.
4.
5.
De Noordse woelmuis, Microtus oeconomus Pall., in Nederland
Carabid beetles in a changing environment.
Climatic influence on the distribution pattern of plant parasitic and soil inhabiting nematodes
Ecologisch profiel van de grote stern (Sterna sandvicensis)
Samenvattend rapport
Werkrapport Mergelland
Ecologisch profiel van de visdief (Sterna hirundo)