Vascular Epiphytes as Regeneration Indicators of Disturbed Forests of theColombian Amazon Region

Vascular Epiphytes as Regeneration Indicators of Disturbed Forests of theColombian Amazon Region

In order to compare how the distribution and composition of vascular epiphytes varies, in three disturbed forests with different recovery times, and to verify whether these factors canindicate the regeneration state, three stubbles that had been abandoned during 12, 18 and 22 years were selected in the neighborhood of Leticia city (Amazons, Colombia). In each stubble 7 Cecropia sciadophylla (Cecropiaceae) individuals were selected, and a sampling of epiphytes was made in the first 3 m of each tree. The number of species, their abundance and covering were used as criteria to compare the three stubbles, because the sensitivity of epiphytes to environmental changes. The results show that the evaluated factors are useful for the characterization of the forestre generation process. In spite of the fact that the number of species in the there stubbles was similar, the composition varied in such a way that about half the species of each stubble were exclusive. The dominance of Monstera obliqua (Araceae) was evident, constituting more than 80% of the epiphytic covering of the total sample. The youngest stubble presented a denser covering and a high diversity index, whereas in the oldest stubbles these values diminish drastically.

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Main Authors: Triana-Moreno, Luz Amparo, Garzón-Venegas, Nelson Javier, Sánchez-Zambrano, Jairo, Vargas, Orlando
Format: Digital revista
Language:spa
Published: Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Biología 2003
Online Access:https://revistas.unal.edu.co/index.php/actabiol/article/view/26669
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spelling oai:www.revistas.unal.edu.co:article-266692012-01-30T20:18:56Z Vascular Epiphytes as Regeneration Indicators of Disturbed Forests of theColombian Amazon Region Epífitas vasculares como indicadores de regeneración en bosques intervenidos de la Amazonía colombiana Triana-Moreno, Luz Amparo Garzón-Venegas, Nelson Javier Sánchez-Zambrano, Jairo Vargas, Orlando Vascular Epiphytes Distribution Diversity Cover Regeneration Stubbles Amazon Region Epífitas Vasculares Distribución Diversidad Cobertura Regeneración Rastrojos de Chagra Amazonía In order to compare how the distribution and composition of vascular epiphytes varies, in three disturbed forests with different recovery times, and to verify whether these factors canindicate the regeneration state, three stubbles that had been abandoned during 12, 18 and 22 years were selected in the neighborhood of Leticia city (Amazons, Colombia). In each stubble 7 Cecropia sciadophylla (Cecropiaceae) individuals were selected, and a sampling of epiphytes was made in the first 3 m of each tree. The number of species, their abundance and covering were used as criteria to compare the three stubbles, because the sensitivity of epiphytes to environmental changes. The results show that the evaluated factors are useful for the characterization of the forestre generation process. In spite of the fact that the number of species in the there stubbles was similar, the composition varied in such a way that about half the species of each stubble were exclusive. The dominance of Monstera obliqua (Araceae) was evident, constituting more than 80% of the epiphytic covering of the total sample. The youngest stubble presented a denser covering and a high diversity index, whereas in the oldest stubbles these values diminish drastically. Con el propósito de comparar cómo varía la distribución y composición de epífitas vasculares en tres bosques intervenidos con diferentes tiempos de recuperación y de com-probar si estos factores pueden ser indicadores del estado de regeneración, se seleccio-naron tres rastrojos o chagras abandonadas con 12, 18 y 22 años de edad cerca de la ciudad de Leticia (Amazonas, Colombia). En cada rastrojo se seleccionaron siete forófitos de la especie Cecropia sciadophylla (Cecropiaceae) y en ellos se realizó un muestreo de las epífitas encontradas en los primeros 3 m. El número de especies, su abundancia yco-bertura se usaron como criterios de comparación entre los tres rastrojos, ya que en estas variables se manifiesta la sensibilidad de las epífitas a las condiciones del entorno. Los resultados muestran que los factores evaluados son útiles para la caracterización de los rastrojos de chagra en diferentes etapas de regeneración. Aunque el número de especies en los tres rastrojos fue similar, la composición varió de modo que cerca de la mitad de las especies de cada rastrojo eran exclusivas. En los tres rastrojos fue evidente la dominancia de Monstera oblicua (Araceae) que constituyó más del 80% de la cobertura epifítica de todo el muestreo. El rastrojo más joven presentó una alta cobertura y un alto índice de diversidad, mientras que en los rastrojos más viejos estos valores disminuyeron drásticamente, lo que sugiere que en los estados de regeneración más avanzados hay un menor establecimiento de epífitas en los estratos bajos por cambios en las condiciones del entorno, tales como la baja incidencia lumínica. Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Biología 2003-07-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unal.edu.co/index.php/actabiol/article/view/26669 Acta Biológica Colombiana; Vol. 8 No. 2 (2003); 31-42 Acta Biológica Colombiana; Vol. 8 Núm. 2 (2003); 31-42 1900-1649 0120-548X spa https://revistas.unal.edu.co/index.php/actabiol/article/view/26669/26957 Derechos de autor 2003 Acta Biológica Colombiana https://creativecommons.org/licenses/by/4.0
institution UNAL
collection OJS
country Colombia
countrycode CO
component Revista
access En linea
databasecode rev-actabol
tag revista
region America del Sur
libraryname Sistema Nacional de Bibliotecas de la UNAL
language spa
format Digital
author Triana-Moreno, Luz Amparo
Garzón-Venegas, Nelson Javier
Sánchez-Zambrano, Jairo
Vargas, Orlando
spellingShingle Triana-Moreno, Luz Amparo
Garzón-Venegas, Nelson Javier
Sánchez-Zambrano, Jairo
Vargas, Orlando
Vascular Epiphytes as Regeneration Indicators of Disturbed Forests of theColombian Amazon Region
author_facet Triana-Moreno, Luz Amparo
Garzón-Venegas, Nelson Javier
Sánchez-Zambrano, Jairo
Vargas, Orlando
author_sort Triana-Moreno, Luz Amparo
title Vascular Epiphytes as Regeneration Indicators of Disturbed Forests of theColombian Amazon Region
title_short Vascular Epiphytes as Regeneration Indicators of Disturbed Forests of theColombian Amazon Region
title_full Vascular Epiphytes as Regeneration Indicators of Disturbed Forests of theColombian Amazon Region
title_fullStr Vascular Epiphytes as Regeneration Indicators of Disturbed Forests of theColombian Amazon Region
title_full_unstemmed Vascular Epiphytes as Regeneration Indicators of Disturbed Forests of theColombian Amazon Region
title_sort vascular epiphytes as regeneration indicators of disturbed forests of thecolombian amazon region
description In order to compare how the distribution and composition of vascular epiphytes varies, in three disturbed forests with different recovery times, and to verify whether these factors canindicate the regeneration state, three stubbles that had been abandoned during 12, 18 and 22 years were selected in the neighborhood of Leticia city (Amazons, Colombia). In each stubble 7 Cecropia sciadophylla (Cecropiaceae) individuals were selected, and a sampling of epiphytes was made in the first 3 m of each tree. The number of species, their abundance and covering were used as criteria to compare the three stubbles, because the sensitivity of epiphytes to environmental changes. The results show that the evaluated factors are useful for the characterization of the forestre generation process. In spite of the fact that the number of species in the there stubbles was similar, the composition varied in such a way that about half the species of each stubble were exclusive. The dominance of Monstera obliqua (Araceae) was evident, constituting more than 80% of the epiphytic covering of the total sample. The youngest stubble presented a denser covering and a high diversity index, whereas in the oldest stubbles these values diminish drastically.
publisher Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Biología
publishDate 2003
url https://revistas.unal.edu.co/index.php/actabiol/article/view/26669
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