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Species composition, similarity and diversity in three successional stages of a seasonally dry tropical forest |
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| Authors: | M. Kalacska G.A. Sanchez-Azofeifa J.C. Calvo-Alvarado M. Quesada B. Rivard D.H. Janzen |
| Affiliation: | aEarth and Atmospheric Sciences Department, University of Alberta, Edmonton, Alta., Canada T6G-2E3 bPrograma de Manejo y Conservacion de Recursos Naturales, Escuela de Ing. Forestal. ITCR, Apartado 159-7050, Cartago, Costa Rica cCentro de Investigaciones en Ecosistemas, Universidad Nacional Autónoma de México, Apartado Postal 27-3 (Xangari), 58089 Morelia, México dDepartment of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA |
| Abstract: | The objectives of this study were to describe the floristic composition, species diversity, similarity and richness among three stages of forest regeneration, and to investigate the influence of the previous land use on species composition in a seasonally dry tropical forest in northwestern Costa Rica. The species diversity and richness of woody stems with diameter greater or equal to 5 cm in 26 0.1 ha plots was found to be the greatest in the intermediate stage followed by the late and early stages. The structural changes of this chronosequence of successional stages were quantified with a modification of the Holdridge complexity index. Using satellite imagery for site selection and historical ground truth analysis the influence of past land use and the frequency of anthropogenic disturbances on species composition was illustrated. |
| Keywords: | Tropical dry forest Floristic composition Species richness Similarity Holdridge complexity index Incidence based coverage estimator Forest structure Successional stages Costa Rica Área de Conservación Guanacaste |
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