Dispersión de semillas por murciélagos en un borde de bosque montano.
Palabras clave:
cecropia, Chiropterocoria, Colombia, Phyllostomidae, Piperaceae, Ornitocoria, Santuario de Fauna y Flora Otún-Quimbaya, SolanaceaResumen
La dispersión de semillas por murciélagos ha sido poco estudiada y los efectos que tienen diferentes coberturas vegetales en este proceso son aún desconocidos. Se midió abundancia y riqueza de semillas dispersadas por murciélagos y otros vectores en un borde de bosque adyacente a un cultivo jóven de eucaliptos en el Santuario de Fauna y Flora Otún-Quimbaya, Risaralda, Colombia. Se comparó la dispersión por murciélagos y aves teniendo en cuenta el esfuerzo de muestreo realizado. Se encontró que la dispersión de semillas varía entre los hábitats alrededor del borde. La dispersión fue más abundante y diversa en el bosque maduro respecto a los primeros metros del cultivo y al interior del cultivo. A pesar de las pocas semillas dispersadas por los murciélagos fuera del bosque, estas son de especies pioneras, que tienen mayor probabilidad de establecerse. La ornitocoria fuera del bosque fue prácticamente nula. Creemos que los murciélagos se enfrentan a una decisión costo-beneficio: sobrevolar áreas desprovistas de vegetación e incrementar el riesgo a ser depredados, o sobrevolar áreas con follaje denso y reducir el riesgo a ser depredado. En definitiva, ambas dediciones afectan el proceso de dispersión en estos hábitats.
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Derechos de autor 2007 Sergio Estrada-Villegas, Jairo Pérez-Torres, Pablo Stevenson (Author)
Esta obra está bajo una licencia internacional Creative Commons Atribución 4.0.
