Alexander Gradel Studied Forestry and International Nature Conservation. As a seconded expert from the German Development Service he is currently serving as a Forestry Officer in a United Nations Food and Agriculture Organization s project in Mongolia. "Biological diversity is one of the most often mentioned criteria for nature conservation and 2010 has been designated the International year of Biodiversity by the United Nations. The loss of biological diversity such as habitat, species or genetic variation still continues. The structural diversity of a forest however, is linked to ecological...