Rates of growth, mortality and recruitment of three tropical dry forest successional stages in Santa Rosa National Park, Costa Rica.
Guardado en:
| Autores: | , |
|---|---|
| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2013 |
| Descripción: | Tropical dry forests are characterized by structural and physiological diversity in their lifestyles. However, the structure, composition and number of species, change according to stage of succession. The aim of this study was to estimate and compare the diameter growth of three successional stages in a tropical dry forest at the Santa Rosa National Park, through the evaluation of nine permanent sample plots. The results showed that the higher value of mean annual increment (MAI) was for the early stage (1,60 mm/year) , the intermediate stage (2,20 mm/year) and the lower value was for the late stage (1,20 mm/year). A high variation between evaluated plots in the same stage was found in terms of MAI, number of species and their composition. The largest diameterincrease for the early stage was found in the class diameter of 15-20 cm (5,20 mm/year), in the intermediate stage at 20-25 cm class(4,50 mm/year)and in the 35-40 cm class(4,90 mm/year) for the late stage. In general, species that grew the most were Rehdera trinervis (17,00mm/year) and Swietenia macrophylla (12,20 mm/year), and the ones that grew the least were the shade-tolerant species that grow in the understory of the intermediate and late stages. Annual mortality percentages calculated with the logarithmic model were 1,3%, 2,6%, and 1,5% in the early, intermediate, and late stage respectively; while the annual recruitment was estimated as 8.8%, 4.8%, and 1.5% for the same stages respectively. Therefore, the main differences among stages are related particularly to species composition and much less to site-specificbiophysical factors. |
| País: | RepositorioTEC |
| Institución: | Instituto Tecnológico de Costa Rica |
| Repositorio: | RepositorioTEC |
| Lenguaje: | Español |
| OAI Identifier: | oai:repositoriotec.tec.ac.cr:2238/5448 |
| Acceso en línea: | https://revistas.tec.ac.cr/index.php/kuru/article/view/1371 https://hdl.handle.net/2238/5448 |
| Access Level: | acceso abierto |
| Palabra clave: | Rehdera trinervis; Swietenia macrophylla; especies forestales; parcelas permanentes; diámetro; incremento medio anual; composición de especies; mortalidad de árboles; reclutamiento de árboles; bosque seco tropical; Parque Nacional Santa Rosa; Costa Rica Rehdera trinervis; Swietenia macrophylla; forest species; permanent plots; diameter; current annual increment; forest composition; tree mortality; tree recruitment; tropical dry forest; Santa Rosa National Park; Guanacaste; Costa Rica |