Tesis Maestría en Ciencias en Recursos Naturales y Desarrollo Rural El Colegio de la Frontera Sur 2001

Bibliografía: hojas 19-24

Abstract.. Introduction.. Study area.. Methods.. Forest stand selection.. Leaf litter decomposition of tree species.. In situ decomposition of local leaf litter.. Nutrient concentration.. Statistical analysis.. Results.. Leaf litter decomposition of tree species.. In situ decomposition of local leaf litter.. Discussion.. Leaf litter decomposition of individula species.. In situ decomposition of local leaf litter.. Conclusion.. References..

Acceso en línea sin restricciones

Leaf litter decomposition rate and nutrient concentration (N, C, P) of three species: Croton lundellii Standl., Metopium brownei (Jacq.) Urban and Manillkara zapota (L.) van Royen) were evaluated in different phases of development (3, 13 and > 50 years old) of secondary dry forest in Campeche, Mexico, to test two hypotheses: 1) leaf decomposition rate is higher in older successional stages of secondary dry forest, and 2) decomposition rate is more rapid in pioneer species than late successional species, because of differences in substrate quality. The litterbag method was employed to evaluate decomposition. Decomposition was related to forest development phase but the strongest influence was due to leaf chemical composition. Decomposition was fastest in C. lundellii, intermediate in M. brownei and slowest in M. zapota. The C/N, C/P ratios and total N and P concentrations were good indicators of decomposition rate across species in all successional stages. In comparing leaf litter collected locally and decomposed in situ, the earlier successional phase showed higher decomposition rates than later stages of succession. Neither N concentration or C/N ratio explained this difference, but it was correlated with higher P concentration. Inglés

Manejo y Conservación de Recursos Naturales

Título en español y texto en inglés