1. Center for Biological and Health Sciences, Ecology and Wildlife Conservation Laboratory, Semi-arid Rural Federal University, Mossoró 59625-900, Brazil
2. Estación Ecologica de Doñana, Consejo Superior de Investigaciones Científicas, 41092 Sevill, Spain
3. Department of Ecology, Biosciences Institute, University of São Paulo, São Paulo 05508-090, Brazil
4. Center for Natural and Human Sciences, Federal University of ABC, Santo André 09210-580, Brazil