Precipitation regime and nitrogen addition effects on leaf litter decomposition in tropical dry forests
Por:
Bejarano M., Crosby M.M., Parra V., Etchevers J.D., Campo J.
Publicada:
1 jul 2014
Categoría:
Ecology, Evolution, Behavior and Systematics
Resumen:
We conducted a year-long field experiment to investigate how nitrogen addition affected decomposition of Piscidia piscipula and Gymnopodium floribundum along a precipitation gradient in the Yucatan Peninsula, Mexico. Nitrogen addition did not affect decomposition rates at the drier sites. However, fertilization at the wettest site increased the decomposition of Gymnopodium litter and decreased the decomposition of Piscidia litter. Water-soluble carbon and lignin, and water-soluble carbon and nitrogen concentrations were the best predictors of decomposition for Gymnopodium and Piscidia litters, respectively. We conclude that the effects of nitrogen addition on decomposition will vary from site to site as a function of mean annual precipitation, inherent soil fertility, and species identity. © 2014 The Association for Tropical Biology and Conservation.
Filiaciones:
Bejarano M.:
Univ Nacl Autonoma Mexico, Inst Ecol, Mexico City 04510, DF, Mexico
Crosby M.M.:
Colegio de Postgraduados, Montecillos, 56230, Mexico
Parra V.:
Departamento de Ecología Tropical, Universidad Autónoma de Yucatán, Merida, 97000, Mexico
Etchevers J.D.:
Colegio de Postgraduados, Montecillos, 56230, Mexico
Campo J.:
Univ Nacl Autonoma Mexico, Inst Ecol, Mexico City 04510, DF, Mexico
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