Aspectos fenologicos de Acrocomia aculeata (jacq.) Lodd. Ex mart. (arecaceae) em populações no Norte de Minas Gerais-Brasil

Abstract

Environmental factors such as precipitation and temperature can exert influence in sync and seasonality of phenological events at Community and specieslevel. The ecological characteristics of species in different populations can result in specific phenotypic responses to the occurrence of individuals in different environments. Phenological patterns were evaluated inter and intra population of Acrocomia aculeata (Jacq) Lodd. Ex Martius (Arecaceae) and their correlation with the environmental data of precipitation, temperature and insolation in addition to the edaphic. The study was conducted in four locations in the North Minas Gerais State, Southeast region: (1) Montes Claros; (2) Riachão; (3) Mirabela and (4)Itacambira. 20 individuals of A. aculeata were selected in each location, being monitored monthly, from May 2008 to May 2012. We recorded the activity and intensity of reproductive and vegetative phenophases and correlated with the environmental data. The production of leaves showed continuous and regular pattern, with the permanence of young leaves, old leaves and sprout throughout the year. Thereproductive phenophaseshasan annual patternandweremainlycorrelatedwith temperatureand Theintrapopulationsynchronycan be consideredhighfor insolation. mostphenophases. Alreadyinterpopulationsynchronypositive correlationwas obtainedonly forripe fruit. Althoughthe populationspresentlittle variationof timingofphenophases, the intensitywasquite variable, which demonstratethe adaptationof individualslocal environmental conditionsin which they exist.