1. Department of Ecology, National Institute of Amazonian Research, Manaus, Brazil.
2. Wildlife Conservation Society Brasil, Manaus, Brazil.
3. Department of Statistics, University of Auckland, Auckland, New Zealand.
4. Department of Ecology, Federal University of Rio Grande do Norte, Natal, Brazil.
5. School of Environmental Sciences, University of East Anglia, Norwich, UK.
6. Department of Fisheries and Wildlife, Oregon State University, Corvallis, OR 97331, USA.
7. Department of Anthropology, Museu Paraense Emílio Goeldi, Belém, Brazil.