Diversity and Structure of Khaya Senegalensis (desr.) A.Juss Habitats Along Phytogeographical Zones in Chad (Central Africa) Implications for Conservation and Sustainable Use

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Ali Mbodou Langa
Elie Antoine Padonou
Ghislain Comlan Akabassi
Bokon Alexis Akakpo
Achille Ephrem Assogbadjo

Abstract

In Chad, the species of Khaya senegalensis is commonly used by the local communities to treat several diseases such as malaria, fever and cough. However, the species is facing the greatest threat for the survival due to its exploitation as timber. The species is on the IUCN red list with endangered status locally. Thus, this study assessed the population structure and ecological indicators of vegetation in three climatic zones dominated by Khaya senegalensis in Chad as a basis for sustainable management and conservation strategies. A total of 88 plots (30 m x 30 m) were used in three phytogeographical zones for data collection. The structural parameters (tree density, basal area) and ecological indicators (specific richness, Shannon diversity index, Pielou’s evenness index, importance value index) were assessed for all tree species and for Khaya senegalensis following a climatic gradient. A number of 300 tree species belonging to 66 families, 11 life form and 14 chorological types were inventoried. K. senegaleensis had the highest significance value index across all three climate zones. In terms of vegetation characteristic, Sudano-Guinean and Sudanian zones were similar against Sudano-Sahelian zone which was different. These results should be fundamental for the conservation and sustainable management of K. senegalensis and its habitats specially in Chad. Likely, the findings contribute to knowledge addition for the species conservation. However, the methodological limitations related to sampling should not be obscured. Therefore, the species’ abundance areas were randomly identified while plots were placed stratified.

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How to Cite
Langa, Ali Mbodou, Elie Antoine Padonou, Ghislain Comlan Akabassi, Bokon Alexis Akakpo, and Achille Ephrem Assogbadjo. 2024. “Diversity and Structure of Khaya Senegalensis (desr.) A.Juss Habitats Along Phytogeographical Zones in Chad (Central Africa): Implications for Conservation and Sustainable Use”. Journal of Environmental Geography 17 (1-4):45-56. https://doi.org/10.14232/jengeo-2024-45530.
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Author Biographies

Ali Mbodou Langa, Ecole Normale Supérieure de Bongor

Ecole Normale Supérieure de Bongor, Département des Sciences de la Vie et de la Terre, Chad  

Laboratory of Applied Ecology, Faculty of Agronomic Sciences, University of Abomey Calavi, Cotonou, Benin

Elie Antoine Padonou, Université d'Abomey-Calavi

Laboratory of Applied Ecology, Faculty of Agronomic Sciences, University of Abomey Calavi, Cotonou, Benin

School of Tropical Forestry, National University of Agriculture, Kétou, Benin

Ghislain Comlan Akabassi, Université d'Abomey-Calavi

Laboratory of Applied Ecology, Faculty of Agronomic Sciences, University of Abomey Calavi, Cotonou, Benin

African Center of Excellence for Climate Change, Biodiversity and Sustainable Agriculture, Unviversity Félix Houphouët Boigny, Côte d’Ivoire

Laboratoire de Botanique, UFR Biosciences, Unviversity Félix Houphouët Boigny, Côte d'Ivoire

Bokon Alexis Akakpo, West African Science Service Centre on Climate Change and Adapted Land Use

Laboratory of Applied Ecology, Faculty of Agronomic Sciences, University of Abomey Calavi, Cotonou, Benin

WASCAL, Climate Change and Human Habitat, Federal University of Technology, Nigeria

Achille Ephrem Assogbadjo, Université d'Abomey-Calavi

Laboratory of Applied Ecology, Faculty of Agronomic Sciences, University of Abomey Calavi, Cotonou, Benin

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