1979 •
ORDINATION OF A SAVANNA WOODLAND IN NIGERIA USING WOODY AND HERBACEOUS SPECIES
Authors:
S. S. C. Onyekwelu, J. C. Okafor
Abstract:
A comparative study of ordinations of the Milliken Hill vegetation was carried out using data of (a) presence and absence of all the species, (b) presence and absence of the woody species and (c) presence and absence of the herbaceous species. The three sets of analyses produced interpretable results. In each case axis one was correlated with the altitudinal gradient, total nitrogen and calcium. The stands at higher elevations are more exposed and contain higher percentages of savanna species. The higher percentage of total nitrogen and calcium (...)
A comparative study of ordinations of the Milliken Hill vegetation was carried out using data of (a) presence and absence of all the species, (b) presence and absence of the woody species and (c) presence and absence of the herbaceous species. The three sets of analyses produced interpretable results. In each case axis one was correlated with the altitudinal gradient, total nitrogen and calcium. The stands at higher elevations are more exposed and contain higher percentages of savanna species. The higher percentage of total nitrogen and calcium in the lower elevation stands is attributed to (a) more accumulation of organic matter and (b) leaching at the higher elevation stands. The first axis of the species ordination separates the savanna species from the forest species. (Read More)
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