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Taxonomic diversity of lianas and vines in forest fragments of southern Togo

Abstract

International audience This work analyses the contribution of climbing plants to the biodiversity of forest fragments in southern Togo, West Africa. Based on a general floristic inventory totalling 1 7 . 5 ha of 53 forest fragments, there were found to be a total of 649 species; li anas, vines or climbing shrubs represented 1 35 genera in 45 families, i.e. 207 species or 32 % of the plant diversity. The majority of these climbing plants were small, grew along the ground or were attached to shrubs or trees no more than 8 rn in height. When only climbing plants were considered, it was possible to distinguish three fragment forest types (littoral, semi-deciduous, gallery) using correspondence analysis. The dominance of non-lianas ( 1 32 species of vines and climbing shrubs) over lianas sensu stricto (75 species) is indicative of relatively low forest having an irregular canopy. Approximately 60 % of climbing plants in southern Togo are common to the tropical forests of the western coast of Africa.

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