Keywords
tropical rain forest
Orchidaceae
Nicaragua
How to Cite
Abstract
Data were collected on orchids growing on trees larger than 10 cm diameter at breast height (dbh) in a Nicaraguan tropical rain forest in 1996. The goal was to analyze orchid occurrence on trees and to explore tree genera preferences of orchid species. A total of 71 orchid species, including seven unknown species, and 47 tree genera were recorded in a 1.2 ha area. Percentage orchid frequency data revealed that Scaphyglottis behrii Helms., Maxillaria neglecta (Schltr.) L.O. Williams, Dichaea panamensis Lindl., and Sobralia fragrans Lindl. are the most abundant orchids in the forest. Principal component analysis showed Pentaclethra, Apeiba, Carapa, and Tetragastris to be the main genera of trees inhabited by orchids. Cluster analysis revealed that the abundance of three orchid species are determinant for segregate tree genera. Fueron colectados datos de orquídeas epífitas en arboles con DAP igual o mayor a 10 cm en un bosque húmedo tropical de Nicaragua, con el fin de analizar la presencia de orquídeas en arboles y explorar la preferencia entre las especies de orquídeas y algunos géneros de arboles. Setenta y una especies de orquídeas, incluyendo siete especies de orquídeas no identificadas, y 47 géneros de arboles fueron registradas en 1.2 ha. El porcentaje de frecuencia de orquídeas revela que Scaphyglottis behrii Helms., Maxillaria neglecta (Schltr.) L.O. Williams, Dichaea panamensis Lindl., y Sobralia fragrans Lindl. son las más abundantes orquídeas en el bosque. Un análisis de componentes principales reveló que Pentaclethra, Apeiba, Carapa y Tetragastris son los principales géneros de árboles habitados por orquídeas. Por otra parte, un análisis de agrupamiento reveló que la abundancia de tres especies de orquídeas es determinante para separar los diferentes géneros de arboles.
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