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Evolution of Floristic Diversity According to Altitude in the Localities of Bangolo and Logoual�?�?�?�?�?�?�?© West of C�?�?�?�?�?�?�?´te D�?�?�?�?�?�?�?�?Ivoire

Kouassi Kouadio Henri, Kouassi Roland Herv�?�?�?�?�?�?�?©, Ayoli�?�?�?�?�?�?�?© Koutoua and N�?�?�?�?�?�?�?�? Guessan Koffi

This study relates to the evolution of floristic diversity in keeping with altitude in the localities of Bangolo and Lougoualé at west of Côte dÂ’Ivoire. The objective was to measure and evaluate the variation and/or the evolution of floristic diversity according to altitude and to study the influence of altitude, the slope and the exposure to the wind on this floristic diversity; this in order to understand the distribution of the types of vegetation. It was based on floristic inventories inspired of the itinerant method and that of the small squares (grixels). The data obtained allowed to shown that the flora is diversified and more homogeneous to 500 m of altitude. It is diversified and less homogeneous with lower altitudes (350 m to 450 m) and with higher altitudes (550 m and 600 m) In addition, the floristic compositions of lower altitudes (350m to 400 m) approach the diversity of 500 m. The floristic diversity of higher altitudes differs deeply from that to 500 m. On the other hand, the flora at 450 m with a floristic composition completely different from those with other altitudes. In addition, some rare species colonize only the low altitudes and are absent at 500 m. On the other hand, others woody species were inventoried at all the levels.