Abstract
Bats play an important role in the ecosystem as seed dispersers, pollinators and pest controllers. In particular, frugivorous bats are important for regeneration processes in open and degraded areas, because they disperse the seeds of pioneer plant species, which are essential for succession. Depending on the type of habitat that is established at the fragment edge, resources and bat movement patterns toward open areas can be affected. The structure and composition of bats was compared between two ‘interior-edge-pasture’ gradients, in an Andean forest fragment located at the Reserva Natural la Montaña del Ocaso (Quindío, Colombia). The two edge-types considered were forest-edge and bamboo-edge (Guadua angustifolia, Poaceae), both located in the same fragment. Bat abundance was significantly different in the two edge habitats. The forest-edge is a soft edge, in that it allows bat species to move from the interior of the forest to the pasture in front of it. In contrast, the bamboo-edge can be defined as semi-permeable, because it allows less movement of species and individuals from the interior to the pasture. Here we evaluate the possible effects of habitat edge type on bat movement in degraded areas in the main coffee producing region of Colombia.
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Acknowledgments
German Dario Gomez (University of Quindío) provides access to the reserve and the logistical support during our stay. We are very grateful to Daniel Rodríguez, Catalina Sánchez-Lalinde and Laura Pérez-Pabón for their assistance while collecting data in the field. We are also grateful to Vinicio Sosa, Nicolás Urbina, Jorge Galindo, Sergio Estrada, Jeffrey Wielgus, Larry Jimenez-Ferbans and an anonymous reviewer for their detailed and useful comments on previous drafts of this paper. This study was supported by the Laboratorio de Ecología Funcional of the Pontificia Universidad Javeriana and made part of the project “Factors controlling the assemblage of tropical bats: trophic breadth and resource partitioning” funded by the Pontificia Universidad Javeriana (ID 000660).
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Cortés-Delgado, N., Pérez-Torres, J. Habitat edge context and the distribution of phyllostomid bats in the Andean forest and anthropogenic matrix in the Central Andes of Colombia. Biodivers Conserv 20, 987–999 (2011). https://doi.org/10.1007/s10531-011-0008-1
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DOI: https://doi.org/10.1007/s10531-011-0008-1