Floristic and Structural Study of the Dahliafleur Partial Nature Reserve Located in Bingerville (South Côte d’Ivoire)

The Dahliafleur Partial Nature Reserve, located in the town of Bingerville, is part of the great Ivorian protected area network. Unfortunately, very little is known about its floristic diversity, and even less about the structure of its vegetation. This work intends to characterize its floristic and structural aspects, through 13 surface surveys and an itinerant survey carried out in the northern, central, and southern zones of this area. The data analysis revealed that the Dahliafleur Partial Nature Reserve includes 135 species. These species are divided into 110 genera and 53 families. It has 26 special-status species and the highest diversity index of any urban forest. The diametric structure shows histograms in the shape of an "inverted J" for each of the areas. This pattern is typical of a forest in a good state of conservation and with good regeneration capacity. This result shows the importance of this reserve for the conservation of floristic biodiversity

Floristic and Structural Study of the Dahliafleur Partial Nature Reserve Located in Bingerville (Côte d’Ivoire)

The Dahliafleur Partial Nature Reserve, located in the town of Bingerville, is part of the great Ivorian protected area network. Unfortunately, very little is known about its floristic diversity, and even less about the structure of its vegetation. This work intends to characterize its floristic and structural aspects, through 13 surface surveys and an itinerant survey carried out in the northern, central and southern zones of this area. The data analysis revealed that the Dahliafleur Partial Nature Reserve includes 135 species. These species are divided into 110 genera and 53 families. It has 26 special-status species and the highest diversity index of any urban forest. The diametric structure shows histograms in the shape of an "inverted J" for each of the areas. This pattern is typical of a forest in a good state of conservation and with good regeneration capacity

Floristic and Structural Study of the Dahliafleur Partial Nature Reserve Located in Bingerville (Côte d’Ivoire)

The Dahliafleur Partial Nature Reserve, located in the town of Bingerville, is part of the great Ivorian protected area network. Unfortunately, very little is known about its floristic diversity, and even less about the structure of its vegetation. This work intends to characterize its floristic and structural aspects, through 13 surface surveys and an itinerant survey carried out in the northern, central and southern zones of this area. The data analysis revealed that the Dahliafleur Partial Nature Reserve includes 135 species. These species are divided into 110 genera and 53 families. It has 26 special-status species and the highest diversity index of any urban forest. The diametric structure shows histograms in the shape of an "inverted J" for each of the areas. This pattern is typical of a forest in a good state of conservation and with good regeneration capacity

Floristic Diversity and Conservation Value of Tanoe-Ehy Forest in South-Eastern (Cote d’Ivoire)

The Tanoe-Ehy Forest, located in the South-Eastern of the Côte d’Ivoire is one of the rare forest cover of this type that still exists in the Country. These Forest was identified as a top priority site for conservation in West Africa. However, this important forest is subject to strong anthropogenic pressures which through poaching, uncontrolled takeoffs of natural resources and some agricultural clearing. A Botanical study based on plots, itinerant and linear inventory conducted in this forest intends to assess the plant species diversity and the conservation value for biodiversity of this forest. At the end of the study, 432 plant species were recorded. Among them, 14 are listed on endemic of Upper Guinea and 16 threatened and endangered list of species. Concerning the species threatened and endangering, 3 species are really in endangering (Hemandradenia chevalieri, Tieghemella heckelii, Irvingia gabonensis) and 13 others are a category of vulnerable species. A Sassandrian species of type II (Piptostigma fugax) was also observed. The dominant species of the forest are Symphonia globulifera and Uapaca paludosa. Concerning the vegetation condition, the swamp forest, the dry land forest and the raphiale vegetation have a high conservation value

Caractéristique structurale des zones marécageuses de la forêt de la Tanoé-Ehy (Sud-Est de la Côte d’Ivoire)

Cette étude vise à dégager les différents états de dégradation de la végétation au sein de la forêt marécageuse de la Tanoe-Ehy, à travers 4 relevés linéaires de 100 mètres de long. L’analyse de ces relevés a montré qu’au niveau des types biologiques, l’espèce Combretum racemosum P. Beauv. (Combretaceae) représente l’essentielle des espèces lianescentes. Dans cette forêt, parmi les espèces qui contribuent fortement à la formation de la végétation, il y a la présence des espèces vulnérables de l’UICN. Concernant les recouvrements, les strates basses sont faiblement occupées. Cependant, la végétation est dense dans les strates moyennes. Ces recouvrements ont montré que la dégradation de la structure des milieux est une conséquence de l’exploitation villageoise. Par ailleurs, cette forêt marécageuse présente des recouvrements particuliers qui n’ont jamais été observés en forêt dense humide de Côte d’Ivoire.Mots clés : Structure, végétation, forêt, marécageuse, types biologiques, recouvrements. Englsih Title: Structural Characteristic of the marshy areas of the Tanoé-Ehy forest (Southeastern Côte d'Ivoire) This study aims to identify the different state of vegetation degradation within the Tanoe-Ehy swamp forest, through 4 linear surveys 100 meters long. Analysis of these surveys showed that at the level of biological types, the species Combretum racemosum P. Beauv. (Combretaceae) is the essential of lianescent species. In this forest, among the species that contribute heavily to vegetation formation, there is the presence of vulnerable IUCN species. For overlays, the lower strata are poorly occupied. However, vegetation is dense in the middle strata. These recoveries have shown that the degradation of the structure of the environments is a consequence of village exploitation. In addition, this swamp forest has special overlays that have never been seen in the dense rainforest of Côte d'Ivoire. Keywords: Structure, vegetation, forest, swampy, biological types, recoveries

Analyse de la Diversité Floristique de Quelques îles Aménagées du Barrage de Buyo (Côte d’Ivoire)

This paper focuses on analyzing the floristic composition of islands of Buyo’s dam after strong anthropization. Using surfaces surveys, linear surveys and itinerant surveys, the floristic composition and diversity were determined. Seven hundred and twenty-three plants species belonging to 353 genera and 99 families were recorded. The ecological importance of the species has been assessed from the Value of Significance. The study showed that for tree species with diameter ≥ 10 cm, the species Alchornea cordifolia, Ceiba pentandra, Theobroma cacao, and Lannea welwitschii were the richest and had the highest Indices of Value Importance. The mean richness of species showed a significant difference (p≤ 0. 03797) among the Islands of Buyo’s dam. Island D which is close to the Park with the presence of animals isrich in species(101 ± 10 74). Apolinaire and Laminebougou Islands farthest to the Park with strong agricultural activity are poor in species (51 ± 11. 14; 50 ± 6. 29). Floristic diversity and evenness do not vary statistically from one site to another.La présente étude se propose d’analyser la composition et la diversité floristique des îles du barrage de Buyo après forte anthropisation. À l’aide de relevé de surface, de relevé linéaire et de relevé itinérant, la composition et la diversité floristique de onze îles ont été déterminées. L’inventaire a permis de noter 723 espèces de plantes reparties entre 353 genres et 99 familles. L’importance écologique des espèces a été appréciée à partir de l’Indice de Valeur d’Importance. L’étude a montré que pour les arbres de diamètre ≥ 10 cm, les espèces Alchornea cordifolia, Ceiba pentandra, Theobroma cacao, Lannea welwitschii sont celles qui ont les plus forts indices de valeur d’importance des espèces. La moyenne de la richesse spécifique montre une différence significative (p≤ 0,03797) entre les différentes îles du barrage de Buyo. L’île D, proche de la forêt du Parc, avec une présence moyenne de mammifères, est la plus riche en espèces (101 ± 10, 74). Les îles Apollinaire et Laminebougou, plus éloignées de la forêt mère et avec une intense activité, sont les plus pauvres en espèces (51 ± 11,14 ; 50 ± 6, 29). La diversité floristique et l’équitabilité ne varient pas statistiquement entre les îles

Dynamique et structure de la flore de la Savane Protégée des Feux dans la Réserve Scientifique de Lamto (Centre de la Côte d’Ivoire)

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

Composition floristique et diversité du peuplement ligneux en zone de savane soudanienne de la Côte d’Ivoire

The woody flora of the Ivorian savannahs, despite botanical harvests carried out by some authors, is not much studied. Thus, the floristic potential of the woody region of Tchologo, with the city of Ferkessédougou as its capital, is not yet sufficiently known. This study aimed to characterize the flora of the Tchologo region in the north of the Ivory Coast. For this purpose, woody species have been identified and measured in areas of one hectare (200 m x 50 m) near three main areas of study. This inventory showed that the area is rich with 88 species, spread over 69 genera and 30 families. The average number of species ranges from 19.20 ± 4.7 on the Ferkessedougou-Tafiré axis to 22.66 ± 2.77 on the Ferkessédougou-Sinématiali axis. The dominant families are the Caesalpiniaceae (13%), the Combretaceae (8%) and the Euphorbiaceae (7%). A comparison of stem density indicated that the Korhogo-Ferkessédougou axis has the highest value. Analysis of floristic diversity has shown a higher diversity around the Ferkessedougou-Tafiré axis. These results attest that the flora of Sudan has a great ecological valu