Diversité et structure de la strate arborée des formations forestières dans le nord des monts Atakora au Togo

Tree layer diversity and structure in forest formations of northern Atakora Mountains, Togo

Authors

  • Wouyo ATAKPAMA Laboratoire de Botanique et Écologie Végétale, Département botanique, Faculté des sciences, Université de Lomé, 01 BP 16515, Togo
  • Hodabalo EGBELOU Laboratoire de Botanique et Écologie Végétale, Département botanique, Faculté des sciences, Université de Lomé, 01 BP 16515, Togo
  • Ditorgma Henok GNANSA Agence nationale de gestion de l’environnement, Ministère de l’Environnement et des Ressources forestières, 575Rue de l’OCAM, BP 2244 Lomé Togo
  • Madjouma KANDA Laboratoire de Botanique et Écologie Végétale, Département botanique, Faculté des sciences, Université de Lomé, 01 BP 16515, Togo
  • Moussa SAMAROU Laboratoire de Botanique et Écologie Végétale, Département botanique, Faculté des sciences, Université de Lomé, 01 BP 16515, Togo
  • Komlan BATAWILA Laboratoire de Botanique et Écologie Végétale (LBEV), Département botanique, Faculté des sciences (FDS), Université de Lomé (UL), 01 BP 1515, Lomé 1, Togo

Abstract

This study was carried out in Togo's ecological zone II, on Mount Atakora. It aimed to determine the diversity and demographic structure of woody species. Forest inventories were conducted on 69 circular plots of 20m radius. Altogether, 102 species were identified. These belonged to 77 genera and 32 families. The most common species were: Lannea acida (53.62%), Vitellaria paradoxa (44.94%), Burkea Africana (43.48%) and Daniellia oliveri (43.48%). The most represented families are Fabaceae (27 species) and Combretaceae (10 species). Four plant communities have been discriminated. The analysis of the identified plant communities showed a density of 202 stems/ha in riparian forests, 360 stems/ha in tree savannahs, 286 stems/ha in open forests and 236 stems/ha in shrub/tree savannahs. An "inverted J" shape characterizes the diameter structure. This indicates that small stems dominate. The distribution of stems by height class showed a positive asymmetric distribution in riparian forests, wooded savannahs, tree/shrub savannahs and open forests. This reflects the dominance of medium height individuals. Undergrowth is abundant in riparian forests and tree savannahs (53.43% and 56.30%) and average in wooded savannahs and opens forests (32.75% and 30.89%). Regeneration is high in riparian forests (66.24%), average in wooded savannahs and shrub/wooded savannahs (45.34% and 36.94%) and low in open forests (22.31%). The low regeneration rate in wooded savannahs and open forests could be due to anthropogenic threats.

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Published

07/04/2024

How to Cite

ATAKPAMA, W., EGBELOU, H., GNANSA, D. H., KANDA, M., SAMAROU, M., & BATAWILA, K. (2024). Diversité et structure de la strate arborée des formations forestières dans le nord des monts Atakora au Togo: Tree layer diversity and structure in forest formations of northern Atakora Mountains, Togo. Revue Nature Et Technologie, 16(02). Retrieved from https://journals.univ-chlef.dz/index.php/natec/article/view/369

Issue

Vol. 16 No. 02 (2024)

Section

Environmental Sciences

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