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The Psychotria vogeliana-community in the spontaneous undergrowth of teak (Tectona grandis L. f.) plantations in south-Benin: Ecological and sllvicultural indicatory values

par Ganglo, Jean Cossi;De Foucault, Bruno;Lejoly, Jean
Référence Acta botanica gallica, 153, 1, page (125-134)
Publication Publié, 2006-03

Article révisé par les pairs

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Résumé :

The spontaneous undergrowth of teak (Tectona grandis L. f.) plantation in Djigbé forest (south Benin) has been studied. The Psychotria vogeliana-community is identified from ten representative phytosociological relevés. This community is an indicator of sandy plateau soils generally associated with the least productive plantations. It's composed of 91 species with a mean of 32 species per relevé. The study of distribution spectra reveals the abundance of phanerophytes, secondary forest species and phytogeographically widespread species; they represent respectively 86%, 48% and 50% of the total number of species. The analysis of species diversity indicates that the Psychotria vogeliana-community is somewhat diversified, but the species abundance is weakly balanced (2.1 for Shannon-Wiever index and 0.48 for evenness index).