This work that is one of the first of its kind in Unburned Savannah in Lamto, center of Ivory Coast, intends to characterize the vegetation in terms of dynamic evolution and plant structure, 53 years after its protection from fires. Surfaces plot, linear surveys and itinerant methods were used to collect floristic data. The diversity and the wealth of flora, as well as the structure of the different types of vegetation has been analyzed. 176 plant species belonged to genera 143 kinds and 49 families were indentified. The most important families are the Leguminosae (14.77 %), Rubiaceae (13.63 %) and Apocynaceae (10.79 %). About 15.37 % (27 species) of this flora represents the particular statute species. Among the inventoried species, 11 are exploitable species or exploited as timber of which ten are forest species. Due to richnes of its flore and flora dynamic, the Unburned Savannah must be protected. Based on an ascending hierarchical classification performed by using 11 linear surveys, this study has demonstrated the existence of a floristic variability to three groups.

Abstract. Gnahore E, Kouadio KR, Amba AJG, Kone M, Bakayoko A. 2022. Ethnobotanical survey of plants used by the riparian population of Banco National Park (Abidjan, Ivory Coast). Asian J Ethnobiol 5: 121-129. Situated at the "heart" of Abidjan, Banco National Park (BNP), Ivory Coast, is the rare relics of moist, dense rainforests coveted everywhere. This work was undertaken with an aim of identifying the plants most usually used by the riparian population of BNP in human food, animal food, and pharmacopeia. An ethnobotanical survey was carried out of the riparian population of the BNP. The method consists of an ethnobotanical survey realized among the inhabitants of the park and those of the surrounding urban districts. The method used was semi-structured interviews. This study targeted 294 people, including 20% men and 80% women, aged between 30 and 60. A total of 36 plant species from 34 genera and 28 families were recorded. Thirteen species were used in food, three fodder species, and thirty others used to treat several ailments in the area. Two of these plants have strong ratio utilization in human food: Myrianthus arboreus P.Beauv. (15.25%) and M. libericus Rendle (14%). Thus, in the area study, five species are respectively considered threatened and three species rare. Leaves (32.55%) and bark (20.93%) are the most used organ. Decoction (98%) was the most common traditional medicine preparation method. Indigenous knowledge distribution in the community showed significant differences (p<0.05) in the study groups for factors of age, sex, gender, and educational level. The number of resources used can seriously impact the forest negatively. It is urgent to adopt a lasting management plan for sustainable harvest for the safeguard and preservation of the plant cash of the BNP.

Abstract. Gnahore E, Douffi KG-C, N’guessan YJ, Amba AJG, Ibrahima D, Kone M, Bakayoko A. 2023. Floristic composition and structure of closed and open forests in the Banco National Park, Abidjan, Côte d’Ivoire. Asian J For 7: 17-26. Natural ecosystems are pressured to degradation caused by human activities. To develop conservation guidelines for these ecosystems, it was necessary to have enough information on their biodiversity. This study aimed to investigate the species richness, diversity, structure, and composition of vegetation in the Banco National Park (BNP), Abidjan, Côte d’Ivoire, in two forest types, namely closed and open forests. Vegetational data was collected using a sampling plot and itinerant methods. The results showed that 345 and 283 species were recorded in the closed and open forest, respectively, suggesting that the closed forest appears richer than the open forest. Fabaceae, Rubiaceae, and Apocynaceae were the most dominant families in both forest types. Both forest types had a high Shannon-Weaver diversity index and high Pielou equality index. The most important species in the open forest included Chrysophyllum subnudum Baker (Sapotaceae), Allanblackia floribunda Oliv. (Clusiaceae) and Funtumia africana (Benth.) Stapf (Apocynaceae), while in the closed forest were Strombosia pustulata Oliv. (Olacaceae), Turraeanthus africanus (Welw. ex C.DC.) Pellegr. (Meliaceae), and Monodora myristica (Gaertn.) Dunal (Annonaceae). The diametric structure showed the greatest proportion of individuals with low diameter classes, indicating regeneration potential. However, there were great differences in stand structure between the open and the closed forest, especially in high-diameter classes, indicating that the open forest has been pressured by timber cutting. The results of this study can serve as baseline information to develop conservation and rehabilitation strategies in BNP to sustain its biodiversity components.

La présente étude a été réalisée dans les forêts classées de Kimbrila et de Kanhasso au Nord-Ouest de la Côte d’Ivoire. Dans le cadre de cette étude, il s’agit d’établir une connaissance de la flore et la structure de la végétation de cette partie du septentrion de la Côte d’Ivoire. Pour ce faire, des inventaires de surface et itinérants ont été réalisés à travers les deux formations végétales. La richesse, la diversité et l’équitabilité des ligneux ont été évaluées. La structure de la végétation a été par ailleurs étudiée à travers la densité des ligneux, la surface terrière, la structure diamétrique et la structure verticale. Les résultats établissent un total de 127 et 104 espèces ont été recensées respectivement dans les forêts classées de Kimbrila et de Kanhasso. Les familles botaniques les plus représentées sont les Fabaceae et les Euphorbiaceae. Les valeurs des indices de Shannon indiquent une diversité moyenne des forêts classées de Kimbrila ((2,50 ± 0,10) et de Kanhasso (2,16 ± 0,90). La structure horizontale des tiges indique que la plupart des plantes ligneuses ont un diamètre inférieur à 60 cm. Toutefois, sur les 7 classes de diamètres considérées, les tiges de diamètre supérieur ou égal à 60 cm sont les plus nombreuses et représentent plus de 20 % des tiges comptabilisées. La densité des tiges est de 557,60 individus/ha à Kanhasso et 523,92 individus/ha à Kimbrila. La surface terrière des tiges, qui est de 11,653 m2/ha à Kanhasso et 12,488 m2/ha à Kimbrila, est contrastée par rapport à la densité. La végétation de ces forêts classées est structurée en 4 strates dont la composante arbustive est la plus dominante. Les sites d’étude sont bien évidemment des végétations de savane. This work was achieved in the Kimbrila and Kanhasso classified forests in North-West Côte d’Ivoire. The main objective of this study is to contribute to a better knowledge of the flora and structural these two classified forests in North-West Côte d’Ivoire. A botanical study based on plots and itinerant inventory conducted in these two forests. The richness, diversity and woody equitability were determined. The vegetation structure was study following the woody density, basal area, diameter class and the vertical structure. The results showed that there were 127 and 104 species recorded in the Kimbrila and Kanhasso classified forests respectively. Fabaceae and Euphorbiaceae were the most dominant families. In these two classified forests, the diversity high with a value of 2.50 ± 0.10 (Kimbrila classified forest) and 2.16 ± 0.90 (Kanhasso classified forest) corresponding to an average indice. The horizontal structure showed than more species richness found in all sample plots in the two classified forest types was present in the smallest diameter class (< 60 cm DBH). Species richness was classified into seven diameter (DBH) classes, while more than 20 % was recorded in the largest diameter class (> 60 cm DBH). The total number of trees per hectare (n/ha) of the Kanhasso and Kimbrila classified forests were 557.60 and 523.92. The basal area (11.653 m2/ha) of the Kanhasso classified forest was higher than that (12.488 m2/ha) of the Kimbrila classified forest. These classified forests vegetation were strutured in four states and domined by the woody species shrub. The study area were the savannah vegetation.

Forests disappearance in Côte d'Ivoire is attributable to peasant intrusions into protected areas, including classified forests. The loss of biodiversity is a consequence of this disappearance. Laouda classified forest, which is the subject of this study, is strongly penetrated by peasants for crops. To better understand the impact of these intrusions, this paper focuses on evaluating the dynamics between 1986 and 2017 starting from the satellite imagery, and then to characterize land covers or land uses of the classified forest. The supervised classification method by neuron network was used on the Landsat TM and OLI images of 1986 and 2017. This was preceded by physiognomic characterization of vegetation types. The different vegetation formations present in this classified forest are dense forests, secondary forests, regenerated forest, and fallows. These habitats have low density values (904.16 to 608.33 stems / ha) and basal area (1.06 to 4.3 m² / ha). The dynamics over time of land use between 1986 and 2017 showed a regression of forests in favor of crops and fallows. Forest formations degradation process is dissection and fragmentation for respectively dense forests and secondary forests. Artificializations or apparitions have been observed at the level of fallows and crops, with the process of creation and aggregation, respectively. During this period, 14.27% or 568.37 ha of the landscape occupied by the forests was converted into crops and fallows. This situation occurs due to