Researchers Marcelo Nascimento, Reinaldo Imbrozio, Kyle G. Dexter, Carolina Castilho, Lidiany Camila da Silva Carvalho, Dora Maria Villela studied the monodominance of Peltogyne gracilipes and the other five most common tree species on the island of Maraca in the north of the Amazon (Astrocaryum aculeatum, Attalea maripa, Ecclinusa guianensis, Licania kunthiana and Pradosia surinamensis) and correlated the basal area with edaphic factors.