par Houinato, Marcel;Sinsin, Augustin Brice 
Référence Bulletin du Jardin Botanique National de Belgique, 71, 2, page (889-910)
Publication Publié, 2001
Référence Bulletin du Jardin Botanique National de Belgique, 71, 2, page (889-910)
Publication Publié, 2001
Article révisé par les pairs
| Résumé : | The Mounts Kouffé region is located in the central part of Benin between 1°40′ and 2°30′ N, and 8°25′ and 9°15′ E. This study dealt with the plant communities of the protected area of Wari Maro and Mounts Kouffé. The vegetation is composed of savannah, woodland and patches of dry forests. The aim of this study is to determine the phytogeographical position of the Mounts Kouffé region within Benin and western Africa. Between 1996 and 1998, floristical surveys were carried out. Some 159 phytosociological relevés were done. They resulted in 954 herbarium specimens corresponding to 584 species. Species of the Sudanian base element represent 16.1% of the total flora spectrum of Mounts Kouffé region. Species of two of the three endemic genera to sudanian regional centre of endemism (RCE) were collected, i.e. Vitellaria paradoxa and Pseudocedrela kotschyi. The species present in both Sudanian and Zambesian RCE made up 13.5% of the phytogeographical spectrum and those of the Guineo-Congolian element accounted for 11.3% of the spectrum. They mostly belonged to gallery forests and dry forests because of the position of this region which is located in the most southern part of the Sudanian RCE close to the regional transition zone of Guinea-Congolia/Sudania. The other species widespread in several RCE's within continental african phytochoria represented 33% of the spectrum. Species of wide distribution represented 25.2% of the spectrum. This vegetation is entirely located into the Sudanian RCE as defined by White, with an important contribution of Guineo-Congolian species. |
