Sustainability Transitions Collective’s team members are full- and part-time researchers working in a diverse range of topics in the area of sustainability.

Arnaud Diemer

Arnaud is the founder and scientific coordinator of Sustainability Transitions Collective. He is an Associate Professor at Université Clermont Auvergne, in the Centre for Studies and Research on International Development (CERDI). Arnaud’s research focuses on Economic Modelling, History of Ideas and Economic Facts, Agricultural Innovations and Education for Sustainable Development. He is also engaged in the Post-Growth Institute’s activities. Arnaud is a core member of ERASME’s management team.


Marie Schellens

Marie is the president of Sustainability Transitions Collective. She holds a PhD in Physical Geography from Stockholm University and a PhD in Environment and Natural Resources from the University of Iceland. Currently, Marie works as an Environmental Security Analyst at UNEP’s Crisis Management Branch. In Sustainability Transitions Collective, Marie is contributing with research on the role of natural resources in conflict risk, by using qualitative and quantitative tools from the field of complex systems. She is a core member of Sustainability Transitions Collective´s management team.


Claudiu Eduard Nedelciu

Eduard holds a PhD in Environment and Natural Resources from the University of Iceland and a PhD in Physical Geography from Stockholm University. Eduard’s research is at the nexus between global food security, sustainable natural resource management and economic transition. His work at Sustainability Transitions Collective focuses on using systems thinking and system dynamics modelling to evaluate the contribution of agroecology to broader socio-economic development. He is a core member of Sustainability Transitions Collective´s management team.


Nathalie Spittler

Nathalie holds a PhD in Environment and Natural Resources from the University of Iceland and a PhD in Economics from the University of Clermont Auvergne, France. She has an inter- and transdisciplinary background in sustainable development, with a focus on sustainable energy and ecological economics. Her work in Sustainability Transitions Collective focuses on modelling the SDGs on national level and applying systems thinking to urban contexts. Nathalie is a core member of Sustainability Transitions Collective´s management team.


Timothy Marcroft

Timothy is Sustainability Transitions Collective´s Treasurer. He has completed a Master’s degree in the Social and Solidarity Economy at the Université Lyon 2 Lumière. Now, he plans to begin a doctoral thesis in collaboration with MondArverne Communauté, HVL University in Norway, and the Université Clermont-Auvergne studying citizen participation in the ecological transition. His research interests include: participatory and democratic organizational structures, local development, political economy, systems dynamics, network socio-economics, and anything else that can help to build a just and sustainable world where everyone is free.


Therese Bennich

Therese holds a PhD in Physical Geography from Stockholm University and a PhD in Economics from Université Clermont Auvergne. She has a background in economics, physical geography and system dynamics modelling. Therese carries out research on the integrated analysis of transition pathways to a bio-based economy. Currently, she also works in the EU funded research project BuildERS, which aims to enhance the resilience of EU communities and citizens in the face of natural and man-made hazards. Her work in Sustainability Transitions Collective focuses on complexity sciences and she has been in the organising committee for several events.  


Johanna Gisladottir

Jóhanna holds a PhD in Environment and Natural Resources from the University of Iceland and a PhD in Physical Geography from Stockholm University. Her research work focuses on using systems thinking and system dynamics modelling to look at corruption in natural resource management. Jóhanna is also a sessional teacher in public administration at the University of Iceland and the environmental manager for the Agricultural University of Iceland. Her work for Sustainability Transitions Collective includes research in the field of social systems and the creation and running of the MOOC on strong sustainability, as well as being in the organising committees of past Sustainability Transitions Collective summer schools and conferences.


Maartje Oostdijk

Maartje is finalising her PhD in fisheries modelling, a double degree between University of Iceland and Stockholm University. She is using tools such as network analysis and ecological modelling to understand marine social-ecological systems. In her work for Sustainability Transitions Collective she uses systems thinking to evaluate Green deal implementation in Europe for third countries. She has been on the organising committee for a number of past Sustainability Transitions Collective summer schools and conferences.


Manuel Morales

Manuel holds a Ph.D. in economics from the Université Clermont Auvergne and is a Postdoc at the Industrial Bioeconomy Chair in NEOMA Business School. His profile combines industrial economy, ecosystem theory, complex and systems analysis to study innovation and economic behaviour in a variety of industrial and public settings. He applies multi-layer modelling, network analysis and system dynamics as a methodology to simulate future desirable scenarios.


Jennifer Hinton

Jennifer holds a PhD in Sustainability Science from Stockholm University, and a PhD in Economics from Université Clermont Auvergne. She has put forth relationship-to-profit theory, which explains how for-profit business structures systemically drive unsustainable dynamics, such as overconsumption, environmental degradation, and inequality; as well as why not-for-profit types business and markets are more compatible with sustainability. She is also the co-author of the book “How on Earth”, which outlines a conceptual model of a not-for-profit market economy. In Sustainability Transitions Collective, Jennifer carried out research on the Social and Solidarity Economy and has been part of organising committees for a number of events.


Ganna Gladkykh

Ganna holds a PhD in Economics from Université Clermont-Auvergne and a PhD in Environment and Natural Resources from the University of Iceland. She is specialised in research on sustainable energy transitions and combines academic rigour with policy relevance. Currently, Ganna works as a Clean Energy Transition Expert at the European Energy Research Alliance. In Sustainability Transitions Collective, Ganna contributed with research on energy transition and has been part of the organising committee for a number of events.


David Collste

David is currently finishing his double PhD degree at the Stockholm Resilience Centre and Université Clermont Auvergne, in which he research focuses on integrated modeling for the implementation of the 2030 Agenda. He works with different integrated assessment tools and applies system dynamics in his research. He has a strong expertise in Systems Thinking and contributes to Sustainability Transitions Collective´s work in this field. David has been on the organising committee of past Sustainability Transitions Collective summer schools.


Florian Dierickx

Florian holds a PhD in Economics from Université Clermont Auvergne. His research has been focused on examining carbon emissions and analysing the sustainability of the energy sector in Europe. Florian uses a wide range of methods, including life cycle analysis, input-output models, as well as integrated assessment models. He is currently working as a Climate Change Officer for the Federal Public Service on Health, Food Chain Safety and Environment in Belgium. In Sustainability Transitions Collective, Florian contributes with research on energy systems, circular economy and climate policy in the EU.