Ulysses Paulino Albuquerque is graduate at Biological Sciences from Universidade Federal de Pernambuco, master's at Plant Biology (Taxonomy and Ethnobotany) from Universidade Federal de Pernambuco and PhD at Plant Biology (Ethnobotany) from Universidade Federal de Pernambuco. Currently he is professor of Universidade Federal de Pernambuco (Pernambuco, Northeastern Brazil) where he coordinates the Laboratory of Ecology and Evolution of Social-Ecological Systems (LEA). He acts in the areas of ecological anthropology, ethnobotany, biodiversity conservation, applied botany, ethnopharmacology and natural products. He has a special interest to the comprehension of the factors that modulate the relation between people and biota on the interface of ecology and evolutive processes. He is member of editorial board of the Journal of Ethnobiology and Etnomedicine (Associate Editor), Economic Botany (Associate Editor) and  Ethnobiology and Conservation (co-Editor in Chief). Reinaldo Farias Paiva Lucena  is graduate at Biological Sciences from Universidade Estadual da Paraiba, master's  and PhD at botany from Universidade Federal Rural de Pernambuco. Currently he is professor of Universidade Federal da Paraiba  (Northeastern Brazil). He acts in the areas of ethnobotany and environmental sciences.  Luiz Vital Fernandes Cruz da Cunha is graduate at Biological Sciences from Universidade Católica de Pernambuco, master's  in plant biology at Universidade Federal de Pernambuco and PhD at Forest Sciences  from Universidade Federal Rural de Pernambuco. Currently he is professor of Universidade Católica de Pernambuco  (Northeastern Brazil), were acts  as director of the Institue of Health and Biological Sciences.  Rômulo R.N. Alves is graduate at Biological Sciences from Universidade federal da Paraiba, master`s and PhD at Zoology from Universidade Federal da Paraiba.  Currently he is professor of Universidade Estadual da Paraiba  (Northeastern Brazil). His areas of academic interest are ethnozoology and wildlife trade, uses and conservation, zootherapy, and human ecology. He has conducted ethnobiological research for the last ten years, which focuses on ethnozoology, particularly on fisheries, hunting, and wildlife trade and uses. In addition, he is one of the Editors-in-Chief of the journal Ethnobiology and Conservation and member of the Editorial Board of the Journal of Ethnobiology and Ethnomedicine.