1. J. Grace, J. McIntyre, P. Meir, J. Moncrieff, J. Massheder, Y. Malhi, Institute of Ecology and Resource Management, University of Edinburgh, Edinburgh EH9 3JU, UK.
2. J. Lloyd, Environmental Biology Group, Research School of Biological Sciences, Institute of Advanced Studies, Australian National University, Canberra ACT 2601, Australia.
3. A. C. Miranda and H. S. Miranda, Laboratorio de Ecologia, Universidade de Brasilia, Brasilia, Brazil.
4. C. Nobre, Instituto National de Pesquisas Espaciais-CPTECH, Caixa Postal 001, 12.630-000 Cachoera Paulista, São Paulo, Brazil.
5. I. Wright and J. Gash, Institute of Hydrology, Wallingford, OX10 8BB, UK.