Humboldt-Universität zu Berlin - Resource Economics

Affiliated Scholars

to Staff Members



Prof. Franz-Theo Gottwald


Foto Stefan Sieber
Photo:Franz-Theo Gottwald


Franz-Theo Gottwald teaches environmental, agricultural, food and bioethics. His publications reflect and discuss the following topics: Guidelines for sustainable development in agriculture and food industry, future of animal husbandry, digitalization and sustainable consumption. Paramount among them are questions of food sovereignty and the new field of urban food governance.

In his capacity of honorary professor for environmental ethics at the HU Berlin, he has been doing research and teaching in the master's INRM and Agricultural Economics programs since 2001. His module focuses on providing a deeper understanding of environmental and bioethics as well as their fields of application,  training and strengthening students’ abilities of argumentation and reflection with regard to ethical questions and the analysis of concrete ethical problems and conflicts arising between the protection and use of soil, plants, animals, humans  and future generations.
He has been director of the Schweisfurth Foundation for thirty years.  The Foundation has been dedicated to ethical ways of doing business, and positive support of sustaining life in viable agriculture and food production methods. Additionally, his leadership, advice and trusteeship have been sought by different associations and organizations.



Prof. Franz-Theo Gottwald

Schweisfurth Stiftung
Rupprechtstr. 25
80636 München
info (at)


Dr. Steffen Lange


Foto Stefan Sieber
Steffen Lange is an economist who combines quantitative and qualitative empirical research with theoretical and conceptual methods to address sustainability issues. His research focuses on digital transformation, the relationship between economic growth and environmental throughput, rebound effects and concepts for sustainable economies. He is a researcher at the Institute for Ecological Economy Research, affiliated scholar of the Resource Economics Group at the Humboldt University Berlin and associated researcher at the  Department of Social-Ecological  Transformation at
the Technical University Berlin. Steffen Lange studied economics in Maastricht, Santiago de Chile and Göttingen and received his doctorate from the Faculty of Economics and Social Sciences at the University of Hamburg. Besides publications in international research journals, he is the author of the books "Macroeconomics Without Growth: Sustainable Economies in Neoclassical, Keynesian and Marxian Theories" (Metropolis) and "Smart Green World? Making Digitalization Work for Sustainability" (Routledge).
Current information on publications, media reports and other information can be found here.


Dr. Steffen Lange

Institut für ökologische Wirtschaftsforschung (IÖW)
Potsdamer Str. 105
10785 Berlin


Dr. rer. agr. Christian Schleyer


Foto Stefan Sieber
Photo:Schleyer (photo riccio)

Christian Schleyer is a specialist in ecological and institutional economics and environmental policy and has been working on various challenges of and opportunities for the sustainable use of natural resources, such as soil, water, air, and biodiversity in agrarian cultural landscapes. Based at the Institute of Geography at the University of Innsbruck (Austria), he is currently leading a Work package ‘Innovation process integration’ in the EU project (Innovation Action) InnoForESt “Smart information, governance and business innovations for sustainable supply and payment mechanisms for forest ecosystem services”. At the Faculty of Life Sciences, he co-leads two teaching modules: Land and Water Management / Biodiversity and Conservation Management. He is also an Associated Fellow at the Berlin Workshop in Institutional Analysis of Social-Ecological Systems (WINS) hosted by IRI-THESys Institute at the Humboldt-Universität zu Berlin


Dr. Christian Schleyer (ORCID Profile)

Leopold-Franzens-Universität Innsbruck
Institute of Geography
Working Group ‘Development Studies and Sustainability Science (AGEF)’
Innrain 52f
6020 Innsbruck (Austria)
christian.schleyer (at)


Dr. Stefan Sieber (habil)


Foto Stefan Sieber

The working group Sustainable Land Use in Developing Countries (SusLAND) focusses on the analysis of land use and landscape systems in emerging and developing countries. Based on the analyses, interdisciplinary research methods are used to develop strategies to mitigate complex problems of farming systems in developing countries at local, regional and global scales. Emphasis is placed on questions regarding the avoidance of land use conflicts, the improved adaptation to climate change, food and nutrition security, and the stabilization of the livelihood of family farms. SusLAND operates in Sub-Saharan Africa, Latin America and South Asia and focusses in particular on resource economics in combination with natural sciences.


Dr. Stefan Sieber

Leibniz-Zentrum für Agrarlandschaftsforschung (ZALF) e. V.
Eberswalder Straße 84
15374 Müncheberg​
T +49 (0)33432 82-125
F +49 (0)33432 82-308
Stefan.Sieber (at)


Univ.-Prof. Dr. Ilona M. Otto


Foto Stefan Sieber
Prof. Dr. Ilona M. Otto is a newly appointed Professor in Societal Impacts of Climate Change at the Wegener Center for Climate and Global Change, University of Graz. She leads a new research group focusing on Social Complexity and System Transformation (SoCo). The group’s ambition is to use complex science theory and novel research methods to analyze social dynamic processes and interventions that are likely to spark rapid social changes necessary to radically transform the interactions of human societies with nature and ecosystem services in the next 30 years. Prof. Otto is also interested in environmental inequalities and the socio-metabolic implications of resource and energy, used to support lifestyles of different social groups. She is also an Associated Fellow at the Berlin Workshop in Institutional Analysis of Social-Ecological Systems (WINS) hosted by IRI-THESys Institute at the Humboldt University.


Univ.-Prof. Dr. Ilona M. Otto
Wegener Center for Climate and Global Change


University of Graz
Brandhofgasse 5
8010 Graz, Austria
T +43 316 380 8464
ilona.otto (at)