Moroccan Journal of Agricultural and Veterinary Sciences

Vol. 12 No. 1 (2024): (March 2024)
Natural Resources and Forestry

Does quarrying contributes to biodiversity conservation in Northern Benin ?

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  • Narcis Togbédji TOHINDE,
  • Pélagie Éméline Sêssi ASSÉDÉ,
  • Rodrigue Ogoulonou BALAGUEMAN,
  • Honoré Samadori Sorotori BIAOU,
  • Armand Kuyéma NATTA
Narcis Togbédji TOHINDE Laboratoire d’Écologie, de Botanique et de Biologie végétale, Faculté d’Agronomie, Université de Parakou, Bénin
Pélagie Éméline Sêssi ASSÉDÉ Direction Nationale des Eaux, Forêts et Chasse, Inspection Forestière de Parakou, Bénin
Rodrigue Ogoulonou BALAGUEMAN Laboratoire d’Écologie, de Botanique et de Biologie végétale, Faculté d’Agronomie, Université de Parakou, Bénin
Honoré Samadori Sorotori BIAOU Laboratoire d’Écologie, de Botanique et de Biologie végétale, Faculté d’Agronomie, Université de Parakou, Bénin
Armand Kuyéma NATTA Laboratoire d’Écologie, de Botanique et de Biologie végétale, Faculté d’Agronomie, Université de Parakou, Bénin

Published 2024-03-15

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Abstract

The study aimed to investigate the hypothesis that abandoned quarries could enhance local floristic diversity, contrasting with the prevailing observation that quarry exploitation has negative impacts on biodiversity. A floristic inventory was conducted within thirty (30 m x 30 m) square plots, with sixteen (16) established in the vegetation of abandoned quarries and fourteen (14) in the adjacent natural vegetation (reference sites). Various diversity indices (including species richness, Chao1, Chao2, Jack1, Jack2, Shannon index and Pielou evenness index) were computed and compared between the two types of ecosystems. We found no significant difference in diversity indices between quarries vegetation and the reference sites. However, the floristic richness of the reference sites exhibited a higher count (62 species) compared to that of the quarries (55 species). A substantial floristic similarity (ranging from 50% to 90%) was observed between the two ecosystems. Both ecosystems were predominantly characterized by the Fabaceae family, which represented 39.3% of the vegetation in quarries and 40.8% in the reference sites. We concluded that the vegetation of abandoned quarries did not affect the existing local diversity as expected. This is probably due to the limited niche differentiation after excavation which requires further investigation.

Keywords: Post-harvesting carries, Excavation, Biodiversity, Benin

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References