dos Santos Vieira, D., Romarco de Oliveira, M.L., Vasconcelos Gama, J.R., Mendonça Machado, E.L. and Gӧrgens E.B. 2017. Spatial pattern and sampling methods for Brazil nut tree in the mesoregion of the Lower Amazon, state of Para, Brazil. Revista Bosque. 38, 1 (May 2017), 97–107.