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Biodiversité et valeur pastorale des herbacées de la réserve de Fina (Mali)

par Diallo, Hady ;Kone, Bérédougou;Maiga, Mohamed;Faye, El Hadji ;Bindelle, Jérôme;Lejoly, Jean
Référence Scripta Botanica Belgica, 50, page (111-120)
Publication Publié, 2013

Article révisé par les pairs

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Résumé :

Background and aims - Agricultural activities and livestock pasture constitute the main human pressures on the Fina reserve in Mali. Their impacts are amplified by the bushfires and climate variations. Their impacts are amplified by bushfires and climate variability. These modifications seem to be generalized and even concern protected areas. In this context, the objective of the study was to analyze the influence of human activities on herbaceous flora diversity variation in Fina reserve. Methods - The three classic zones of this reserve (transition, buffer zone and central area) were studied. Transition and buffer zones are disturbed environment. The central area where human activities are prohibited was used as reference for comparison. Homogenous vegetation units with similar ecological condition were identified in these three zones. On every unit, quadrats of 25 × 25 m were delimited in which four samples of 1 m2 randomly distributed were carried out following the topography position. Key results - Records include 141 herbaceous species included into 87 genera and 31 families. Poaceae family is the most represented with 25 species distributed in 18 genera. Floristic diversity is influenced by topography. The transition area is the richest, followed by the central zone and lastly by the buffer zone. The transition zone species richness is due to the abundance of adventitious plants. Perennial Poaceae regress in the Fina reserve. The herbaceous flora list of Fina reserve was established with identification of pasture species indicating disturbance. This flora list may be used as reference for vegetation dynamics studies in the Fina reserve. © 2013 National Botanic Garden of Belgium.