Carmen de la Paz Pérez-Olvera

Diameter stem growth and phenology of Tabebuia Rosea (Bertol.) DC. in Costa Grande, Guerrero, Mexico

Tabebuia rosea is a multipurpose tree species whose rate of growth and phenology have been studied in a few tropical forest of Mexico, beingthis information for knowledge, conservation and management helpful. In this work, carried out for 17 months in Zihuatanejo de Azueta, Guerrero, growth was measured every two months and compared between diametric categories and qualities-positions crown. Also bimonthly four phenological events (leaf falling, flowering, fruiting, leaf flushing) were recorded and correlated with precipitation and temperature. Average annual growth was 0.58 cm and its curve fitted to logistic model. Leaf flushing was correlated to precipitation (p < 0.05). Growth rate was not related to trees size or crown position, a positive association was found between seasonal pattern of rainfall, annual increments and leaf flushing. * Unidad Iztapalapa, Universidad Autónoma Metropolitana. San Rafael Atlixco núm.186, Col. Vicentina, Iztapalapa, México, D.F., C.P. 09340. Correo electrónico: elherrera2001@yahoo.com.mx ** Postgrado Forestal, Colegio de Postgraduados, Campus Montecillo, Carretera México-Texcoco km. 36.5, Montecillo, Texcoco, Estado de México, México, C.P. 56230. *** Laboratorio de Anatomía y Tecnología de la Madera, Unidad Iztapalapa, Universidad Autónoma Metropolitana, San Rafael Atlixco 186, Col. Vicentina, Iztapalapa, México, D.F., C.P. 09340. Palabras clave: Bandas dendrométricas; brote de hojas; selva mediana subcaducifolia; Zihuatanejo de Azueta.

Crecimiento en diámetro y fenología de Tabebuia rosea (Bertol.) DC. en Costa Grande, Guerrero, México

Tabebuia rosea is a multipurpose tree species whose rate of growth and phenology have been studied in a few tropical forest of Mexico, beingthis information for knowledge, conservation and management helpful. In this work, carried out for 17 months in Zihuatanejo de Azueta, Guerrero, growth was measured every two months and compared between diametric categories and qualities-positions crown. Also bimonthly four phenological events (leaf falling, flowering, fruiting, leaf flushing) were recorded and correlated with precipitation and temperature. Average annual growth was 0.58 cm and its curve fitted to logistic model. Leaf flushing was correlated to precipitation (p < 0.05). Growth rate was not related to trees size or crown position, a positive association was found between seasonal pattern of rainfall, annual increments and leaf flushing. * Unidad Iztapalapa, Universidad Autónoma Metropolitana. San Rafael Atlixco núm.186, Col. Vicentina, Iztapalapa, México, D.F., C.P. 09340. Correo electrónico: elherrera2001@yahoo.com.mx ** Postgrado Forestal, Colegio de Postgraduados, Campus Montecillo, Carretera México-Texcoco km. 36.5, Montecillo, Texcoco, Estado de México, México, C.P. 56230. *** Laboratorio de Anatomía y Tecnología de la Madera, Unidad Iztapalapa, Universidad Autónoma Metropolitana, San Rafael Atlixco 186, Col. Vicentina, Iztapalapa, México, D.F., C.P. 09340. Palabras clave: Bandas dendrométricas; brote de hojas; selva mediana subcaducifolia; Zihuatanejo de Azueta.