Environmentalist
Member of KNNV Bollenstreek.
In 2022 worked on Bioblitz "LIsse Wassergeest" with other members of KNNV Bollenstreek.
In 2023 Paul works on a Bioblits "Natuurontwikkeling Langeveld" with te same members of KNNV Bollenstreek.

As professional and volunteer Paul works for ANLV Geestgrond. This organisation has a project to protect the biotope of the Partridge in the bulbsregion between Leiden and Haarlem.