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- Title
Phylogenetic diversity of forest trees in the Usambara mountains of Tanzania: correlations with altitude.
- Authors
Tallents, Lucy A.; Lovett, Jon C.; Hall, John B.; Hamilton, Alan C.
- Abstract
The relationship between diversity of large trees and altitude was investigated in a Tanzanian tropical rain forest. In total, 231 samples of 20 trees of ≥ 20 cm d.b.h. from the East and West Usambara mountains, covering an elevation range from 280 m to 2180 m a.s.l., were analysed. An ordination demonstrated a constant turnover of species, genera, family and orders with elevation. There were no obvious zones or discontinuities. There was no decline in plot richness with respect to altitude for species, genera or orders. Family richness was shown to increase with altitude. A measure of genetic diversity, the avalanche index, was calculated for each plot to investigate the effect of incorporating phylogenetic relatedness of individuals into the diversity measure. Distances between taxa were extracted from a recent molecular phylogeny of the angiosperms. Incorporation of phylogenetic diversity at family level enhanced the positive correlation between plot diversity and altitude. © 2005 The Linnean Society of London, Botanical Journal of the Linnean Society, 2005, 149, 217–228.
- Subjects
USAMBARA Mountains (Tanzania); TANZANIA; TREES; RAIN forests; FORESTS &; forestry; ANGIOSPERMS; PLANT genetics
- Publication
Botanical Journal of the Linnean Society, 2005, Vol 149, Issue 2, p217
- ISSN
0024-4074
- Publication type
Article
- DOI
10.1111/j.1095-8339.2005.00431.x