title: A model based on environmental factors for diameter distribution in black wattle in Brazil.
abstract: This article discusses the dynamics of a diameter distribution in stands of black wattle throughout its growth cycle using the Weibull probability density function. Moreover, the parameters of this distribution were related to environmental variables from meteorological data and surface soil horizon with the aim of finding a model for diameter distribution which their coefficients were related to the environmental variables. We found that the diameter distribution of the stand changes only slightly over time and that the estimators of the Weibull function are correlated with various environmental variables, with accumulated rainfall foremost among them. Thus, a model was obtained in which the estimators of the Weibull function are dependent on rainfall. Such a function can have important applications, such as in simulating growth potential in regions where historical growth data is lacking, as well as the behavior of the stand under different environmental conditions. The model can also be used to project growth in diameter, based on the rainfall affecting the forest over a certain time period.
authors.affiliation: Federal University of Parana, Department of Forest Sciences, Curitiba, Paraná, Brazil.
authors.forename: Carlos Roberto
authors.initials: CR
authors.lastname: Sanquetta
authors.affiliation: Federal University of Parana, Department of Forest Sciences, Curitiba, Paraná, Brazil.
authors.forename: Alexandre
authors.initials: A
authors.lastname: Behling
authors.affiliation: Federal University of Parana, Department of Forest Sciences, Curitiba, Paraná, Brazil.
authors.forename: Ana Paula
authors.initials: AP
authors.lastname: Dalla Corte
authors.affiliation: Federal University of Parana, Department of Forest Sciences, Curitiba, Paraná, Brazil.
authors.forename: Sylvio
authors.initials: S
authors.lastname: Péllico Netto
authors.affiliation: Federal University of Parana, Department of Forest Sciences, Curitiba, Paraná, Brazil.
authors.forename: Aurelio Lourenço
authors.initials: AL
authors.lastname: Rodrigues
authors.affiliation: TANAC S.A. - Forest Department, Montenegro, Rio Grande do Sul, Brazil.
authors.forename: Augusto Arlindo
authors.initials: AA
authors.lastname: Simon
mesh_terms: D000045:Acacia / Q000033:anatomy & histology* / Q000254:growth & development*; D001938:Brazil; D017753:Ecosystem; D004777:Environment; D008954:Models, Biological; D015233:Models, Statistical