Wissenschaftliche Ämter und Funktionen
| Since 2023 | Past President of the International Association for the Study of the Commons (IASC) |
| Since 09/2022 | Vice-Rector for Personnel and Organizational Development Martin-Luther-University Halle-Wittenberg |
| Since 04/2022 | Senior Research Fellow Ostrom Workshop, Bloomington, Indiana University, USA |
| 2021- 2022 | President of the International Association for the Study of the Commons (IASC) |
| 08/2021 - 05/2022 | Interim Director Commons Governance Program, Ostrom Workshop, Bloomington, Indiana University, USA |
| 2021 | Co-organizer of the Teaching the commons Video Contest, in the frame of the World Commons Week 2021 https://wcw2021.iasc-commons.org/ |
| 2021 | Conference chair: Food Commons in Europe and Beyond, December 9th, 2021, https://2021food.iasc-commons.org/ |
| 2020 - 2022 | Editorial Board of the trade journal "welternährung.de", published by the NGO Welthungerhilfe (German Agro Action) https://www.welthungerhilfe.de/welternaehrung/ |
| 2020 - 2022 | Scientific Advisory Board at the Leibniz Institute of Agricultural Development in Transition Economies (IAMO), Halle, Germany, https://www.iamo.de/ |
| 2019 - 2022 | Steering Committee of the Institutional Grammar Research Coordination Network (IGR CN), https://institutionalgrammar.org/ finanzed by the National Science Foundation (USA), led by Saba Siddiki |
| 2019 - 2021 | Rector`s Commission on Personnel Development, Martin-Luther-University Halle-Wittenberg. |
| 2019 - 2020 | President-Elect of the International Association for the Study of the Commons (IASC) |
| 2019 - 2020 | Founding member of the transdisciplinary “Platform agricultural socio-economy” in Germany, https://agrarbuendnis.de/ |
| 2019 | Scientific review committee, XVIIth Global IASC Conference, Lima, Peru. |
| 2018 - 2020 | Member of the local organizing committee for the GEWISOLA conference 2020 in Halle (Saale). |
| 2018 | Co-organizer of the Global Commons Week, 4-12 October 2018, https://www.worldcommonsweek.org/ |
| 2017 - 2018 | Working Group member, building a mission statement “Agriculture 2030” in the federal state of Saxony-Anhalt, led by the ministry for environment, agriculture and energy. |
| 2017 | Scientific review committee, XVIth Global IASC Conference, Utrecht, The Netherlands. |
| 2016 - 2020 | Lead of the European Group of the International Association for the Study of the Commons (IASC). |
| 2016 | Nomination Committee for the election of the board and president of the IASC 2019-2020 term. |
| 2016 | Scientific board, 4rth European Conference on the International Asso-ciation for the Study of the Commons “Commons in a Glocal World”, Conference held in Bern, Switzerland, May 10-13, 2016. |
| 2015 - 2016 | Member of the „Future Forum“: Advisory council to the Agricultural and Environmental Minister of Saxony-Anhalt, Dr. Hermann Onko Aeikens. |
| 2015 | Scientific board, Thematic Conference on Urban Commons “The City as a Commons, Reconceiving Urban Space, Common Goods and City Governance”, Bologna, Italy, November 6-7,2015. |
| Since 2015 | Foundation and coordination of a working research group "Power in Institutions and Institutional Analysis" affiliated withe the Ostrom Workshop in Political Theory and Policy Analysis, Indiana University, USA, together with Prakash Kahwan, Gustavo Garcia, Eric Coleman |
| 2014 | Scientific board, 3rd European IASC Conference held in Umeå, Sweden, September 16-19, 2014 |
| 2012 - 2018 | Council member of the International Association for the Study of the Commons (IASC) www.iasc-commons.org |
| 2012 - 2017 | Appointed member of the "SES-Club" founded by Prof. Elinor Ostrom and Colleagues, to further the development of an analytical system framework for socio-ecological and socio-technical systems |
| 2011 - 2016 | Steering Committee of the KULUNDA project "Kulunda - How to prevent the next Global Dust Bowl? - Ecological and Economic Strategies for Sustainable Land Management in the Russian Steppes: A Potential Solution to Climate Change", financed by the German Federal Ministry of Education and Research (BMBF) |
| 2010 - 2012 | Member of the Working Group "Climate Adaptation" of the Senate of the German federal research institutes under the lead of the Federal Ministry of Food, Agriculture and Consumer Protection |
| 2010 - 2011 | Chair and conference organizer of the European IASC Conference 2011 (International Association for the Study of the Commons) in Plovdiv, Bulgaria, September 14-17,2011 |
| 2010 | Member of the Organising Committee if the IAMO Forum 2010 on "Institutions in Transistion: Challenges for the New Modes of Governance", June 16-18,2010, Halle (Salle), Germany |
| 2008 - 2011 | Scientific advisory board of the PONA junior research group in social-ecological research (Politics of Nature Design), Leuphania University Lüneburg |
| 2008 - 2009 | Creation and coordination of a working research group "New Challenges in the Management of Shared Water Resources" affiliated with the Ostrom Workshop in Political Theory and Policy Analysis, Indiana University; USA |
| 2006 | Academic Review Committee, XI Biennial Conference of the International Association for the Study of Common Property held in Bali, Indonesia, June 18-23,2006 |
| Since 2006 | Active member of the NIÖ Network (New Institutional Economics in North-East Germany). Organization of the network meeting in Halle (Saale) in 2009 |