of economic diversification and financial liquidity effects in sustainably managed forest enterprises DISSERTATION zur Erlangung des Doktorgrades (Dr. forest.) der Fakultät für Forstwissenschaften und Waldökologie der Georg-August-Universität Göttingen vorgelegt von Johannes Carl Wildberg geboren am 14. Dezember 1989 in Wedel (Holstein) Göttingen, April 2021First, I would like to thank:My supervisor Prof. Dr. Bernhard Möhring -your expertise was invaluable for me to find the right focus for my research and I am grateful for the discussions we had that lead to the completion of this thesis. I thank you for the opportunity you gave me to work for the department as your assistant and lecturer and for supporting me in my travels abroad.My second supervisor Prof. Dr. Carola Paul -your supportive, targeted and solutionoriented feedback has been of great help and your positive attitude and success towards publishing in scientific journals has been an inspiration. Thank you for accepting me as your doctoral student without hesitation.My third supervisor Prof. Dr. Matthias Dieter -I highly appreciate the good talks we had during our colloquia and in Brazil.I also particularly thank: Dr. Roman Koster for being a most supportive and empathic colleague and friend with incredible talents.Dr. Fabian Böttcher for your quick-mindedness and readiness to help out in both professional and personal matters.Dr. Kai Husmann for being there when I needed an experienced researcher when things got complicated.Dr. Markus Dög for being a team-player and an enjoyable colleague to work with.