Helder Filipe dos Santos Viana holds a BSc degree in Forestry Engineering (2000), an MSc degree in Forestry Resources Engineering (2006) and a PhD degree in Agricultural and Forestry Sciences (2012). He is a professor in the Agrarian Superior School of Viseu (ESAV) of Polytechnic Institute of Viseu (IPV), Portugal, and a researcher in the Centre for Research and Technology of Agro-Environmental and Biological Sciences (CITAB). He is the director of the Department of Ecology and Sustainable Agriculture of ESAV and the coordinator of graduate and undergraduate courses. He typically teaches, since 2002, silviculture, sustainable forest management, forest inventory, remote sensing and cartography and supervises several BSc and MSc degree students. His areas of research focus on the study of biomass energy, in general, and biomass mapping, carbon stock inventory, forest allometry and modelling and forest species growth, in particular. He is involved in several research projects in Portugal and internationally, such as WESST (Wood Energy Supply Systems Training), EURIS (Europeans Using Roundwood Innovatively and Sustainably), EuroCoppice (innovative management and multifunctional utilization of traditional coppice forests) and GFBI (Global Forest Biodiversity Initiative), among others. He coordinates with several projects for the industry and municipalities. He is an author and co-author of more than 100 papers in national and international journals, book chapters and conference proceedings, with over 404 citations (according to Google Scholar). He collaborated as a reviewer with many prestigious scientific journals.