John Janssen

John Janssen is a Researcher at the Vegetation and Landscape Ecology group of Wageningen University & Research. He has authored or co-authored 268 research outputs, including reports, datasets, and peer-reviewed articles.

• Research Focus: Biodiversity, vegetation ecology, invasive species, and conservation biology in ecosystems like the Caribbean Netherlands, Natura 2000 habitats, and arid regions of Saudi Arabia.
• Projects: Leading initiatives such as 'Technologie- en datagedreven natuurbeleid' and 'Ecologische Bouwstenen' to integrate data-driven approaches into environmental policy.
• Collaborations: Extensive partnerships across Europe and the Caribbean, with contributions to databases like the Dutch Caribbean species distribution portal.

Publications include the 2025 State of Nature Report for the Caribbean Netherlands, studies on old-growth forests in the Netherlands, and vegetation analysis in Saudi Arabia. His work emphasizes ecological assessment, habitat conservation, and biodiversity informatics.

Datasets developed include the Flora of the Dutch Caribbean Islands and EUNIS-ESy, a classification tool for European vegetation plots. These resources are open-access and widely cited.