Glossary of "Ecology (6th ed.)" by Krebs (2009)
- the distribution of relative abundance among the species.
Glossary of "Cladistics (2nd ed.)" by Kitching et al. (1998)
- Heterogeneity between data sets refers to the statistical difference between the topology and strength of phylogenetic signal contained in two or more data sets coded for the same taxa.
- Kitching, I. J., Forey, P. L. Humphries, C. J. & Williams, D. M. 1998. Cladistics, 2nd ed.: the Theory and Practice of Parsimony Analysis. -xii + 228 pp. Oxford University Press, New York.
- Krebs, C. J. 2009. Ecology, 6th ed. -xvi + 655 pp. Pearson Benjamin Cummings, San Francisco.