Thomas investigates sustainable use concepts for multifunctional forests and landscapes. His particular interest lies in risk modeling and diversification strategy planning considering single or multiple ecosystem services. Methodologies drawn from decision theory, operations research and modern finance theory are applied to forest science issues and land use problems in general. Having studied forest science at the Ludwig-Maximilians-University Munich, Thomas leads now the Institute of Forest Management at the Technical University of Munich. His research interests have led him to the Institute for Commercial Forestry Research (South Africa), the Instituto Forestal (Chile), the Chinese Academy of Forestry, Stellenbosch University (South Africa), and the Universidad Técnica Particular de Loja as well as Universidad Nacional de Loja (both Ecuador). In 2013 he declined an offer for an appointment to Albert-Ludwigs-University in Freiburg as professor of “Forest Economics and Forest Planning”.