Abstract

RONCANCIO - D, Nestor  and  ESTEVEZ - V, Jaime. EVALUATION OF THE BAT ASSEMBLAJE IN AREAS SUBJECTED TO A NATURAL REGENERATION AND TO A RESTORATION BY MEANS OF ALDER PLANTATIONS. Bol. Cient. Mus. Hist. Nat. Univ. Caldas [online]. 2007, vol.11, n.1, pp.131-143. ISSN 0123-3068.

In three areas subjected to different restoration processes, the diversity and the functional structure of the bat community was studied. Two of the areas were under natural restoration conditions and the other one was subjected to restoration by Alder (Alnus acuminata) plantations. The samples were taken using the randomized blocks design. In each unit there were 120 net-hours of effort of sampling. The bat diversity was analyzed by means of graphics of relative abundances, and the functional structure was analyzed with trophic categories. The results suggest that the naturally regenerated forests have an appropriate habitat and resource offer, the conditions that allow the maintenance of a diverse and balanced community of bats, within the ecological limits outlined by the altitude of the area. On the other hand, the area subjected to restoration with forest plantations seemingly, doesn’t offer enough niches to sustain a community of bats with what is expected for unaffected habitats at this altitude.

Keywords : Ecological restoration; bats; diversity; functional structure.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )