SABER-ULA, Universidad de Los Andes - Mérida - Venezuela >
Facultades >
Facultad de Ciencias >
Unidades de Investigación de la Facultad de Ciencias >
Institutos de Investigación >
Instituto de Ciencias Ambientales y Ecológicas (ICAE) >
Articulos, Pre-prints (Instituto de Ciencias Ambientales y Ecológicas (ICAE)) >


Título: Are cloud forest tree structure and environment related in the Venezuelan Andes?
Autores: Schwarzkopf Kratzer, Teresa
Riha, Susan
Fahey, Timothy
DeGloria, Stephen
Correo Electrónico: teresas@ula.ve
Editor: Austral Ecology 36, Issue 3: 280-289
Resumen: Cloud forest vegetation structure and composition were studied in theVenezuelan Andes at three sites in Mérida State. Although the sites are within 10 to 30 km of each other, climatic, geologic and topographic differences are remarkable. The main purpose of the study was to determine the relationship of specific environmental variables to forest vegetation characteristics, including basal area, tree height, density and diversity, and leaf area index (LAI). At 51 plots, all trees’ diameter at breast height >10 cm were recorded and identified. Although the environment at the three sites is distinctive, the tree species composition of the most abundant species was very similar. None of the measured environment variables were significantly correlated with the measured vegetation structure variables, except LAI, which was correlated with slope orientation; LAI showed higher values at southfacing plots.Tree height was relatively uniform, while basal area was highly variable and reached very high values. Stem densities were in the range reported elsewhere in cloud forests. Multivariate analysis using structure or composition data shows segregation of the plots by site. Principal component analyses by site indicate a minor impact of environmental factors on forest variables. At each site, a particular group of species are correlated with the ordination axes.We conclude that species pools and forest dynamics add to the complexity of the structure of the studied cloud forests.
Colación: 280-289.
Fecha: May-2011
País: Australia
Palabras Claves: Basal area
Elevation
Leaf area index
Slope
Topography
Institución: Universidad de Los Andes
URI: http://www.saber.ula.ve/handle/123456789/39259
Aparece en colecciones:Articulos, Pre-prints (Facultad de Ciencias)
Articulos, Pre-prints (Instituto de Ciencias Ambientales y Ecológicas (ICAE))

Archivos en estos artículos:

Archivo Descripción TamañoFormato
Schwarzkopf2011.pdf276.11 kBAdobe PDFVer/Abrir

Todos los artículos en Dspace están protegidos con Derecho de Autor, todos los derechos reservados, a menos que se indique lo contrario.

 

Licencia Creative Commons
Todos los documentos publicados en este repositorio se distribuyen bajo una
Licencia Creative Commons Atribución-NoComercial-CompartirIgual 3.0 Venezuela.

Repositorio Institucional de la Universidad de Los Andes, Mérida, Venezuela - Comentarios
Software DSpace Copyright © 2002-2007 MIT and Hewlett-Packard -
DSpace Add-on Statistics of RepositóriUM © University of Minho.