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1 June 2013 Patterns of Diametric Growth in Stem-Analyzed Laurel Trees (Cordia alliodora) in a Panamanian Forest
Bernard R. Parresol, Margaret S. Devall
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Abstract

Based on cross-dated increment cores, yearly diameters of trees were reconstructed for 21 laurels (Cordia alliodora) growing in a natural secondary forest on Gigante Peninsula, Panama. From this sample of dominant-codominant trees, ages were 14–35 years with an average of 25 years. Growth typically slowed at 7 years old, indicating effects of competition from closure of gaps in the canopy. Rate of growth in diameter was modeled using the Bertalanffy-Richards growth function. Four patterns of growth were detected, of which 57% were sigmoidal, 19% were convex, 10% were monomolecular, and 14% were inverse sigmoid.

Con base de testigos fechados de madera, diámetros anuales se reconstructaron para 21 árboles de laurel (Cordia alliodora) creciendo en un bosque natural secundario en la Peninsula Gigante, Panama. De esta muestra de arboles dominantes-codominantes, los edades varían de 14 a 35 años con un promedio de 25 años. Típicamente el crecimiento de los árboles disminuó a siete años de edad, señalando los efectos de competencia debido de la cierre de los claros en el dosel. La tasa de crecimiento diamétrico de los árboles se modeló usando la function de crecimiento Bertalanffy-Richards. Cuatro patrones de crecimiento se encontraron; 57 por ciento de los patrones eran sigmoideos, 19 por ciento eran convexos, 10 por ciento eran monomoleculares, y 14 por ciento eran sigmoideos inversos.

Bernard R. Parresol and Margaret S. Devall "Patterns of Diametric Growth in Stem-Analyzed Laurel Trees (Cordia alliodora) in a Panamanian Forest," The Southwestern Naturalist 58(2), 170-178, (1 June 2013). https://doi.org/10.1894/0038-4909-58.2.170
Received: 22 June 2010; Accepted: 1 March 2013; Published: 1 June 2013
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