Implicaciones de la urbanización en la presencia, distribución y ecología reproductiva de la fauna de anuros de una ciudad del área central de Argentina

Abstract

© 2015 Universidad Nacional Autónoma de México. Urbanization disrupts the natural ecosystem and causes the decline of amphibian populations. In this study, an inventory of anuran species that are present in a city central Argentina is presented and their reproductive aspects associated with urban environments are analyzed. Eighteen sampling sites were selected and classified according to the stability of the body of water, in four different environments: 1)permanent, 2)semipermanent, 3)semitemporal and 4)temporal. To determine the reproductive activity, the acoustic emissions and the presence of larval stages were recorded. The indexes of alpha and beta diversity, relative importance (IIR) and permanence (IP) were calculated. To compare the diversity among environments a Hutcheson's t-test was performed. There were 8 species of anurans. Rhinella arenarumhad the highest IP and IIR.The species Leptodactylus gracilis, L. latinasusand R. arenarumoccupied more sites. The semitemporal environment showed the highest diversity and less variation in abundance among species. The lowest diversity was recorded in the permanent environment. Due to the special requirements of the species, the diversity of environments with different hydroperiods is a key factor for the preservation of a community of urban frogs.