1. Departamento de Biologia; Setor de Ecologia; Universidade Federal de Lavras; Lavras Minas Gerais Brazil
2. Lancaster Environment Centre; Lancaster University; Lancaster UK
3. Department of Zoology; University of Oxford; Oxford UK
4. MCT/Museu Paraense Emílio Goeldi; Belém Pará Brazil
5. Smithsonian Tropical Research Institute; Balboa, Ancon Panama City Panama
6. Department of Environment; Earth and Ecosystems; The Open University; Walton Hall Milton Keynes UK