Tropical Ecology and Conservation [Monteverde Institute]

Alternative Title

Estructura de la comunidad de epífitas vasculares en un bosque enano de Costa Rica

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Publication Date

May 2001

Abstract

Neotropical montane forests are characterized by their great abundance and high diversity of epiphytes. This study examines the distribution of epiphytic families in three zones of sixMeliosma vemicosa trees using single-rope climbing techniques to access the forest canopy. Nine-hundred ninety-seven vascular epiphytes from eight angiosperm families and division Pteridophyta occurred at the study site. Orchidaceae, Bromeliaceae, Araceae, Ericaceae, Piperaceae, and Gesneraceae were the most common angiosperm families. Pteridophytes accounted for 40% of the individuals present. Friedman's test for Shannon -Weiner index and Orchidaceae showed a significant Chi-squared value (X2 =8.4, and X2 =7.4) and tied p-value (p = 0.02, and p = 0.02). Mode of seed dispersal, type of growth form and structure, and methods of water absorption and storage are discussed as factors that affect vertical distribution of epiphytes. This study indicates relatively high epiphyte diversity at the family level, at a mid-elevation site in Costa Rica. Los bosques nubosos neotropicales tienen una alta abundancia y diversidad de epífitas. Este estudio investigó la distribución de diferentes familias de epifitas en tres divisiones de seis árboles, Meliosma vemicosa. Se encontraron 997 epífitas vasculares de ocho familias angiosperma y la división Pteridophyta. Orchidaceae, Bromeliaceae, Araceae, Ericaceae, Piperaceae, y Gesneraceae son las familias más abundantes. Pteridophyta consta de 40% de los individuos. Se encontró una diferencia significativa entre la diversidad en los diferentes divisiones del árbol y también en la abundancia de los individuos en la familia Orchidaceae. La dispersión de semillas, la estructura y el almacenaje del agua puede afectar la distribución de epífitas. Esta investigación demostró que la diversidad de familias de epífitas es alta en un bosque nuboso en Costa Rica.

Keywords

Epiphytes, Epifitas, Seeds--Dispersal, Semillas--Dispersion, Monteverde Biological Station (Costa Rica), Estacion Biologica de Monteverde (Costa Rica), Costa Rica--Puntarenas--Monteverde Zone--Monteverde, Costa Rica--Puntarenas--Zona de Monteverde--Monteverde, CIEE Spring 2001, CIEE Primavera 2001

Description

Student Affiliation : Departments of Biology and Environmental Studies Oberlin College, Oberlin, Ohio Digitized by MVI

Subject: topical

Epiphytes; Epifitas; Seeds--Dispersal; Semillas--Dispersion; Monteverde Biological Station (Costa Rica); Costa Rica--Puntarenas--Monteverde Zone--Monteverde; Costa Rica--Puntarenas--Zona de Monteverde--Monteverde; CIEE Spring 2001; CIEE Primavera 2001

Subject: geographic

Estacion Biologica de Monteverde (Costa Rica)

Genre

Reports

Holding Location

|Monteverde Institute MVI

Identifier

M39-00054

Community structure of vascular epiphytes in a Costa Rican elfin forest

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