Species, functional groups and community structure in seed banks of the arid Nama Karoo: Grazing impacts and implications for rangeland restoration Dreber, Niels Oldeland, Jens Van Rooyen, Gretel M. W. 2011 - Forschungsinformationssystem der UHH
Diversity measures in comparative rangeland studies:application and advantages of SADs and diversity profiles Oldeland, Jens Dreber, Niels Wesuls, Dirk 2009 - Forschungsinformationssystem der UHH