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Ecología en Bolivia, Vol. 40(3): 365-379, Diciembre de 2005.


Caracterización de un bosque montano
húmedo: Yungas, La Paz

S. Francisco Bascopé S.1,2 & Peter M. Jørgensen2


1 Herbario Nacional de Bolivia, Instituto de Ecología, Universidad
Mayor de San Andrés, Casilla 10077, La Paz, Bolivia

2 Missouri Botanical Garden, 4344 Shaw Blvd.,
St. Louis, Missouri 63110, USA

Resumen

Se instaló una parcela permanente de muestreo de 1 ha cerca de Chiriuno (14°29’S 68°15’W) en el Parque Nacional Madidi entre una altitud de 1.850 a 2.023 m. Se registró un total de 962 individuos con diámetro a la altura del pecho = 10 cm, distribuidos en 34 familias, 67 géneros y 82 especies. Dentro de la PPM no se registraron lianas ni palmeras. El 69.7 % de los individuos presentó un diámetro menor a 20 cm. El área basal total fue de 22.6 m2, de este total el 85.3% presenta un diámetro menor a 40 cm. El 76% de los individuos presenta altura menor a 15 m. La mayor diversidad florística (73 spp.) está presente en individuos con DAP entre 10–19.9 cm, que representa el 89% del total de especies encontradas. Nectandra sp. 1, Ilex sp.1 y Guatteria boliviana son las especies con mayor índice de valor de importancia; Euphorbiaceae, Lauraceae y Aquifoliaceae son las familias ecológicamente más importantes.

Palabras clave: Bolivia, Parque Nacional Madidi, Bosque montano tropical, Parcela permanente de muestreo, Composición y estructura.

Abstract

A permanent plot of 1 ha was established near Chiriuno (14°29’S 68°15’W) in the Madidi National Park at an elevation of 1,850–2,023 m. A total of 962 individuals with a diameter at breast height = 10 cm were recorded. The individuals were identified to belong to 34 families, 67 genera, and 82 species. Neither lianas nor palms were recorded in the plot. The 69.7 % have less than 20 cm in diameter. The total basal area was 22.6 m2, of this the 85.3% was represented by individuals with less than 40 cm in diameter. The trees with less than 15 m tall constitute the 76% of the individuals. The majority of the diversity (73 spp.) is found in diameters class of 10–19.9 cm. Nectandra sp. 1, Ilex sp.1, and Guatteria boliviana are the species with highest values in the Importance Value Index. Euphorbiaceae, Lauraceae y Aquifoliaceae are ecologically the most important families.

Key words: Bolivia, Madidi national park, Montane tropical forest, Permanent plots, Composition and Structure.

 

 

 
 
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