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Adaptaciones anatómico-estructurales foliares de Chaetolepis lindeniana (Naud.) Triana a lo largo de un gradiente altitudinal en el Páramo del Parque Nacional Sierra Nevada de Mérida (Venezuela)

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Author(s): Ely, Francisca | Torres, Fresia

Journal: Plantula
ISSN 1316-1547

Volume: 3;
Issue: 2;
Start page: 101;
Date: 2003;
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Keywords: Chaetolepis lindeniana | Melastomataceae | adaptative anatomy | sclerophyllous | Páramo | venezuelan Andes.

ABSTRACT
Chaetolepis lindeniana represents one of the species of Melastomataceae that grows at the highest altitudes of Venezuela, covering a broad range of altitudes. In the Sierra Nevada of Mérida, it grows between 2,900 and 4,100 m. This species exhibits sclerophyllous features both in its external as well as in its internal leaf morphology that have enabled it to adapt to the severe enviromental conditions that characterize the Páramo. No significative structural or topographic variations were observed in the leaves belonging to the individuals of the different populations sampled along the altitudinal gradient, however, slight variations concerning the size and pigmentation of the leaves were observed in the different microhabitas, were they are exposed to different light intensities.
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Tango Jona
Tangokurs Rapperswil-Jona