1. a School of Geography and the Environment, University of Oxford , Dyson Perrins Building, South Parks Road, Oxford, OX1 3QY, UK
2. b School of Geography, University of Exeter , Rennes Drive, Devon, EX4 4RJ, UK
3. c National Institute for Space Research (INPE), Divisão de Sensoriamento Remoto, Av. dos Astronautas , 1758, São José dos Campos, Brazil
4. d Museu Paraense Emílio Göeldi , Belém, Pará, Brazil
5. e University of Arizona, Department of Soil, Water and Environmental Sciences , 1200 E. South Campus Drive, Room 429, Shantz Building 38, Tucson, AZ, USA