Marianne has over ten years of expertise in issues related to the EU and international biodiversity policy with special focus on assessing the socio-economic importance of biodiversity and ecosystem services and supporting the integration of these aspects into policies and decision-making processes, in the aid of green economy and sustainable development.

Marianne is currently leading IEEP’s global portfolio of work. Since joining IEEP in 2005 Marianne has contributed to a range of EU and international policy developments, leading a range of projects linked to natural capital and the green economy, socio-economic benefits of nature conservation, biodiversity financing and external dimensions of the EU biodiversity policy. She has also authored numerous peer-reviewed articles and book chapters, including a book on the socio-economic value of protected areas.