Abstract

ROMAN-PALACIOS, Cristian et al. USE OF MICROHABIT BY ANURANS IN AN INTERVENED DRY FOREST FRAGMENT OF THE MAGDALENA MEDIO AREA IN GUARINOCITO, CALDAS. Bol. Cient. Mus. Hist. Nat. Univ. Caldas [online]. 2016, vol.20, n.2, pp.181-196. ISSN 0123-3068.  https://doi.org/10.17151/bccm.2016.20.2.14.

The anuran assemblages in three habitats (forest, lake and quarry) with different degrees of human disturbance present in a dry forest fragment in the Farm La Española, Guarinocito, Caldas, were compared. Extensive routes samplings were conducted using visual encounter surveys (VES), from which abundance and microhabitat use were recorded for each one of the species within the different habitats, and the record of environmental variables describing the sampling area such as temperature, relative humidity, and water ponds perimeter, was carried out. A total of 13 anurans species were found, among which Engystomops pustulosus recorded the most relative abundance with a catch rate of 5.16 individuals per hour. Significant differences were found in diversity between the studied habitats being lower in the forest where there were lower richness but better dominance. The rate of replacement of species between habitats was 71%, showing pond and quarry the greater similarity in anurofauna composition. The use of substrate by each species was different between habitats (X², p<0.05) and only two species (Leptodactylus fragilis and L. colombiensis) showed high variability in the modified habitats.

Keywords : Anurans; assemblages; tropical dry forest; regenerating forest; biotic variables; modified habitats.

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