1. Kuylenstierna, J. L., Björklund, G. & Najlis, P. The Comprehensive Assessment of the Freshwater Resources of the World-Policy Options for an Integrated Sustainable Water Future. Water Int. 23, 17–20 (1998).
2. World Water Assessment Programme. The United Nations World Water Development Report 3: Water in a Changing World (UNESCO/Earthscan, Paris/London, 2009).
3. Hamilton, L. S. & King, P. N. Tropical Forested Watersheds. Hydrologic and Soils Response to Major Uses or Conversions. (Westview Press, Colorado, 1983).
4. Sandström, K. Can forests “provide” water: widespread myth or scientific reality? Ambio 27, 132–138 (1998).
5. Calder, I. R. et al. Forest and water policies–The need to reconcile public and science perceptions. Geol. Acta 2, 157–166 (2004).