Diversité végétale de la Forêt Classée de Yaya au Sud-Est de la Côte d’Ivoire

Cette étude a été conduite afin de contribuer à une meilleure connaissance de la diversité floristique ligneuse de la forêt classée de Yaya. Au total, 50 placettes de 200 m2 ont été disposées dans les différents types d’occupation du sol. Dans chacun des rectangles, tous les individus ligneux de diamètre à hauteur de poitrine (DHP) supérieur ou égale à 10 cm ont été identifiés, comptés et mesurés. Ces Relevés de surfaces couplés aux inventaires itinérants ont permis d’inventorier 167 espèces rangées dans 134 genres que se partagent 47 familles. Les familles les plus importantes dans l’ordre étaient : les Fabaceae, les Euphorbiaceae et les Malvaceae. Les Mésophanerophytes et les mégaphanerophytes étaient dominants avec les pourcentages respectifs de 43% et 35%. L’endozochorie était le mode de dissémination le plus rependu avec un taux de 79%. 14% des espèces recensées dans cette forêt étaient des espèces à statut particulier. Les valeurs moyennes des densités et aires basales des différents biotopes n’étaient pas statistiquement différents, qui indiquent une bonne conservation de la forêt. Ces résultats étaient donc suffisants pour justifier sa protection.   English title: Plant diversity of the Yaya Classified Forest in South-eastern Côte d'Ivoire This study was conducted to contribute to a better knowledge of the woody floristic diversity of the Yaya classified forest. A total of 50 plots of 200 m2 were set up in the different land-use types. In each of the rectangles, all woody individuals with a diameter at breast height (DBH) greater than or equal to 10 cm were identified, counted and measured. These area surveys coupled with the roving surveys resulted in 167 species in 134 genera shared by 47 families. The most important families in order were: Fabaceae, Euphorbiaceae and Malvaceae. Mesophanerophytes and megaphanerophytes were dominant with the respective percentages of 43% and 35%. Endozory was the most common mode of spread with a rate of 79%. 14% of the species recorded in this forest were special status species. The mean values of the densities and basal areas of the different biotopes were not statistically different, which indicates a good conservation of the forest. These results were therefore sufficient to justify its protection

Étude Ethnobotanique et Screening Phytochimique de Quelques Ptéridophytes de la Forêt Classée de Yapo-Abbé (Côte d’Ivoire)

An ethnobotanical study with phytochemical screening of some Pteridophytes was carried out in the classified forest of Yapo-Abbé in the south of Côte d'Ivoire, in the Agboville Department, precisely in the subprefecture of Azaguié. The objective of this study was to show the different uses of the Pteridophytes of this forest. The approach method is an ethnobotanical survey carried out among the populations of the study area. This survey consisted in drafting a questionnaire beforehand to apprehend the multiple uses of Pteridophytes among the surrounding population and to develop a photo album of Pteridophytes to be presented during the interview. The data collection was carried out using the semi-structured interview method and with the help of an interpreter guide. It identified 19 species of Pteridophytes including six (6) species used as medicinal plants. No other use of these taxa was mentioned. The whole plant is the most solicited or 73.33% for the preparation of medicinal recipes. Various methods of preparation such as decoction (33.3%), kneading (33.3%), softening (20%) and use in the fresh state (13.3%) are used for recipes. single species. There are also different modes of administration of phytomedicaments: drink (42.85%), local application (37.71%), mastication (7.14%) and massage (7.14%). The phytochemical sorting performed on the hydroethanolic extracts revealed that the different drugs of these plants contain sterols, polyterpenes, polyphenols, European Scientific Journal November 2018 edition Vol.14, No.33 ISSN: 1857 – 7881 (Print) e - ISSN 1857- 7431 174 flavonoids, catechin tannins, alkaloids and quinones which give them various therapeutic properties