
“Strategy is the art of navigating an ocean of uncertainties, through archipelagos of certainties.”
Edgar Morin, Method

Knowledge
At Ruizia, we understand the world through knowledge: a complex process that connects facts, the people who produce them, and the contexts in which they are embedded. This approach takes into account perceptual errors, cultural biases and paradigms, while remaining open to revision.
Through this approach, we produce robust analyses of island systems that inform and strengthen our interventions.
Areas of expertise
Regional Research & Innovation Systems in the EU Outermost Regions
We analyse regional R&I systems in the EU Outermost Regions through:
- mapping stakeholders and their dynamics;
- analysing their integration into European research and innovation networks;
- comparing their performance in terms of local development and integration into global value chains

Island Socio-Ecosystem Dynamics
We are particularly interested in:
- the environmental history of plantation islands;
- the contribution of islands to the development of modern science.

Colonial and Post-Colonial Island Economic Systems
Our research focuses on:
- the contribution of island and colonial experiences to the development of political economy;
- power relations within island systems;
- the sustainability of development imposed through public policy.
Main papers and reports
R&I systems in the outermost regions
- Widening the innovation gap? The outermost regions in the European Research Area, Holstein et al. 2025
- Nine regional diagnoses and joint strategy for OR R&I ecosystem performance, Holstein & Tarnus., 2025
- Ile en transitions : plan d'action pour la Recherche et l'Innovation à La Réunion (2021-2027), Holstein & Tarnus, 2023
- La Reunion dans l'ERA : Feuille de route pour l'intégration de La Réunion dans l'Espace Européen de la Recherche et de l'Innovation, Holstein & Tarnus, 2023
- La Reunion, a European living lab in the Indian Ocean. Research and innovation projects funded by the European Union, Holstein & al., 2023
- La Reunion Research and Innovation Directory, Holstein & Tarnus, 2019
Island Socio-Ecosystem Dynamics
- An Environmental History of the Plantation System on the Island of La Réunion (1638–1960), Holstein & al, 2024
- The sustainability of colonial and postcolonial island economies: the case of Reunion Island, Holstein, 2014
Colonial and Post-Colonial Island Economic Systems



