1. Laboratory of Ecology and Physiology of Phytoplankton Department of Plant Biology University of Rio de Janeiro State Rio de Janeiro RJ Brazil
2. Laboratory of Aquatic Ecology Department of Biology Federal University of Juiz de Fora Juiz de Fora MG Brazil
3. Museu Nacional Federal University of Rio de Janeiro Rio de Janeiro RJ Brazil
4. Aquatic Ecology & Water Quality Management Group Department of Environmental Sciences Wageningen University Wageningen The Netherlands