Edited by: Ms. Dagmar Fiedler, Dr Lucie Moeller
Dear Professor Zehnsdorf,
This special issue is dedicated to you on the occasion of your 50th birthday.
This collection of articles is a personal gift from some of your present and former colleagues and project partners who work in the field of bioenergy and sustainability, in honor of your special birthday.
May not only you but also all readers enjoy this special edition!
Kindly accept our warm congratulations on your birthday and our sincere best wishes for health and happiness in the coming years. We wish you for the future not only many smart ideas and good solutions but also sustained success in your teaching and research. At this point, we would like to thank you for all your support and cooperation as well as the unusual way of doing science, which is in fact unique.
Lucie Moeller and Dagmar Fiedler
on behalf of the publisher and all the contributing authors