Ecologia e diversidade da herpetofauna associada à Bromélia Encholirium spectabile Mart. ex Schult. & Schult. f. em uma área de Caatinga, Nordeste do Brasil.

Abstract

Caatinga biome has high biological importance because of this many are the studies of plant and animal communities and the interactions that is established among themselves. This study aimed to know the richness of species of reptiles and amphibians and the environment of use provided by bromeliad Encholirium spectabile on a rocky outcrop in the Pernambuco semiarid region. For that, monthly trips were made between February 2015 and January 2016 and search as active sampling method was used. Data analysis included the richness and abundance of species and the spatial and temporal niche. The sampling effort totaled 728 hours-man along which were registered 906 sightings of 33 species and of these, 24 had some degree of association with bromeliads. The richness observed approached the estimated and the distribution of abundances set the log-normal model. The dominant species were Psychosaura agmosticha and semitaeniatus and the rarest were Apostolepis cearensis, Boiruna sertaneja,, Ligodactylus klugei, Mesoclemmys tuberculata and Rhinella jimi. The largest habitat use of amplitudes and microhabitat were recorded for Psychosaura agmosticha and Tropidurus. hispidus, respectively. The most demanding species and the environment of use was I. iguana. The Tropiduridae lizards had the highest amplitude as the activity schedule among the diurnal species and Phyllomedusa nordestina and Phyllopezus pollicaris among the nocturnal. There were high levels of overlap between all species studied niche axes.Seasonality influenced the species diversity using bromeliads throughout the year. Bromeliads play an important biological role in the communities where it occurs, supporting several species, including endemic.