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Article Dans Une Revue Open Journal of Ecology Année : 2024

Diversity and Structure of the Woody Stand in a Sudano-Sahelian Transition Zone in Senegal

Moustapha Bassimbe Sagna
  • Fonction : Auteur
Aissatou Thiam Ndong
  • Fonction : Auteur
Khoudia Niang
  • Fonction : Auteur
Aly Diallo
  • Fonction : Auteur
  • PersonId : 1078459
Sekhouna Diatta
  • Fonction : Auteur
Daouda Ngom
  • Fonction : Auteur
Aliou Guissé
  • Fonction : Auteur

Résumé

The main objective of the study was to investigate the diversity of the woody stratum of the vegetation in intercommunity rangelands in the department of Koungheul based on an ecological inventory using vegetation surveys. The results indicate a rich flora of 70 species divided into 54 genera and 27 families where Ceasalpiniaceae and Rubiaceae are dominant (5 genera each). They are followed by Combretaceae and Euphorbiacea (4 genera each) and by Capparaceae, Fabaceae and Mimosaceae (3 genera for each family). But at the specific level, it is the Combretaceae which dominates with 10 species and Rubiaceae (7 species). It is more representative at the level of the rural community of Lour Esacale. The different values of vegetation parameters from one site to another indicate variability in community rangeland management practices. The woody stand, dominated by small Combretaceae, shows a relatively stable level of organization with an average equitability of about 45% for the two rural communities studied. Species such as Cordyla pinnata, Sclerocarya birrea, Adansonia digitata and Sterculia setigera contributed strongly to the basal and aerial cover of the overall stand. The regeneration of the stand is very good (about 85% on average) but it represents very few species, especially of the Combretaceae family. This shows a tendency to a progressive loss of species richness in the woody stratum.
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Dates et versions

hal-04475786 , version 1 (27-02-2024)

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Moustapha Bassimbe Sagna, Aissatou Thiam Ndong, Khoudia Niang, Oumar Sarr, Aly Diallo, et al.. Diversity and Structure of the Woody Stand in a Sudano-Sahelian Transition Zone in Senegal. Open Journal of Ecology, 2024, 15, pp.14 - 28. ⟨10.4236/ajps.2024.151002⟩. ⟨hal-04475786⟩

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