Étude floristique des forêts du Parc national d'Odzala (Congo-Brazzaville)

Abstract

The global taxonomic list of the Odzala national Park consists 238 species belonging to 47 families. Comparison of the transects floristical composition has allowed us to point out three forests clusters, confirmed by the DCA (Detrended Correspondence Analysis) of dense forests relevés:—western forests, where diversity is higher and constituted by the Plagiostyles africana and Coelocaryon preussii plant community;—central-south forests, groups dominated by the Pausinystalia macroceras and Dialium pachyphyllum community; the north eastern forests, where species diversity index are lower and characterized by Keayodendron bridelioides and Markhamia tomentosa. At the families level, the diversity of the Mimosaceae, Burseraceae and Myristicaceae changes according to the gradient southwest/northeast, characterized with a conspicuous species impoverishment.