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Field biology

I have conducted bird and plant surveys of nature reserves in The Netherlands and participated in several national bird census projects. Currently, I regularly submit bird and plant observations to waarneming.nl and observation.org (databases collecting field observations of all species in The Netherlands and worldwide, respectively) and natuurkalender.nl (the Dutch phenological network with observations of yearly recurring life cycle events in nature).

My collection of marine and freshwater molluscs can be viewed on Flickr, waarneming.nl, and observation.org. My herbarium of grasses, too, can be viewed on Flickr and waarneming.nl.



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