Volume 57, Issue 1, October 2021, Pages 49–58
Dramane Soro1, Adama Pagadjovongo Silue2, Doudjo Noufou Ouattara3, and Mamidou Witabouna Koné4
1 UFR Sciences Biologiques, Université Pelefero Gon Coulibaly, BP 1328 Korhogo, Côte d’Ivoire
2 UFR Sciences Biologiques, Université Pelefero Gon Coulibaly, BP 1328 Korhogo, Côte d’Ivoire
3 UFR Sciences de la Nature, Université NANGUI ABROGOUA, 02 BP 801 Abidjan 02, Côte d’Ivoire
4 UFR Sciences de la Nature, Université NANGUI ABROGOUA, 02 BP 801 Abidjan 02, Côte d’Ivoire
Original language: English
Copyright © 2021 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Vegetation in northern Côte d’Ivoire is facing strong pressure of human activities and climate change. The aim of this study is to analyze floristic diversity, woody vegetation structure and conservation value of village forest relics in Korhogo department. For this purpose, a surface inventory has been carried out in plots of 625 m² (25 x 25 m²). The relative importance of flora has been assessed through Indices Value Importance (IVI) and Rare Species and Families. Vegetation structure was studied through woody density, burrow surface and diametric structure. A total of 107 species divided into 80 genera, which include 30 families was obtained. The most important families are Fabaceae, Rubiaceae and Combretaceae. Flora of these forests relics is also characterized by the presence of species of special status, including one endemic to West African forest block. Eight species are ecological importance (Daniellia oliveri (IVI = 26.90), Piliostigma thonningii (IVI = 19.24), Pericopsis laxiflora (IVI = 18.33), Vitellaria paradoxa (IVI = 18.87), Anogeissus leiocarpus (IVI = 16.69), Terminalia glaucescens (IVI = 13.26), Detarium microcarpum (IVI = 12.48) and Parkia biglobosa (IVI = 10.32)). Density of 884 plantes/ha and basal area mean (12.82 m²/ha) are indicators of good level of conservation of forested formations of these relics. The diametric structure of the vegetation has an «inverted J» shows a predominance of small diameter individuals. Efforts to conserve endemic, rare and endangered species and to manage these village forests sustainably must be a priority for local populations and local authorities.
Author Keywords: Floral diversity, woody plants, forest relics, vegetation structure, Korhogo.
Dramane Soro1, Adama Pagadjovongo Silue2, Doudjo Noufou Ouattara3, and Mamidou Witabouna Koné4
1 UFR Sciences Biologiques, Université Pelefero Gon Coulibaly, BP 1328 Korhogo, Côte d’Ivoire
2 UFR Sciences Biologiques, Université Pelefero Gon Coulibaly, BP 1328 Korhogo, Côte d’Ivoire
3 UFR Sciences de la Nature, Université NANGUI ABROGOUA, 02 BP 801 Abidjan 02, Côte d’Ivoire
4 UFR Sciences de la Nature, Université NANGUI ABROGOUA, 02 BP 801 Abidjan 02, Côte d’Ivoire
Original language: English
Copyright © 2021 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Vegetation in northern Côte d’Ivoire is facing strong pressure of human activities and climate change. The aim of this study is to analyze floristic diversity, woody vegetation structure and conservation value of village forest relics in Korhogo department. For this purpose, a surface inventory has been carried out in plots of 625 m² (25 x 25 m²). The relative importance of flora has been assessed through Indices Value Importance (IVI) and Rare Species and Families. Vegetation structure was studied through woody density, burrow surface and diametric structure. A total of 107 species divided into 80 genera, which include 30 families was obtained. The most important families are Fabaceae, Rubiaceae and Combretaceae. Flora of these forests relics is also characterized by the presence of species of special status, including one endemic to West African forest block. Eight species are ecological importance (Daniellia oliveri (IVI = 26.90), Piliostigma thonningii (IVI = 19.24), Pericopsis laxiflora (IVI = 18.33), Vitellaria paradoxa (IVI = 18.87), Anogeissus leiocarpus (IVI = 16.69), Terminalia glaucescens (IVI = 13.26), Detarium microcarpum (IVI = 12.48) and Parkia biglobosa (IVI = 10.32)). Density of 884 plantes/ha and basal area mean (12.82 m²/ha) are indicators of good level of conservation of forested formations of these relics. The diametric structure of the vegetation has an «inverted J» shows a predominance of small diameter individuals. Efforts to conserve endemic, rare and endangered species and to manage these village forests sustainably must be a priority for local populations and local authorities.
Author Keywords: Floral diversity, woody plants, forest relics, vegetation structure, Korhogo.
How to Cite this Article
Dramane Soro, Adama Pagadjovongo Silue, Doudjo Noufou Ouattara, and Mamidou Witabouna Koné, “Systematic and structural analysis of woody species of forest relics in the Korhogo region (northern Côte d’Ivoire),” International Journal of Innovation and Scientific Research, vol. 57, no. 1, pp. 49–58, October 2021.
