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Currently, the aims of a biomass studies are to elucidate energy and nutrient cycles. The available data concerning biomass and nutrients mostly refer to conifers and a few other major commercial hardwood species, while little information exists regarding other less important forest species of scant commercial value. Furthermore, the information concerning forest biomass is obtained from inventories where only the commercial volume of biomass is taken into account and hence the total biomass is underestimated and other fractions, such as branches and leaves - useful when size and shape is not...