1. Murray, A. F. Application of Neural Networks (Kluwer Academic, Boston, 1995).
2. Edwards, M. & Morse, D. R. The potential for computer-aided identification in biodiversity research. TREE 10, 153–158 (1995).
3. Wright, D. H. Species energy theory: an extension of species-area theory. Oikos 41, 495–506 (1983).
4. Kerr, J. T. & Packer, L. Habitat heterogeneity as a determinant of mammal species richness in high-energy regions. Nature 385, 252–254 (1997).
5. Brown, J. H. Macroecology (Chicago University Press, Chicago, 1995).