2014
DOI: 10.4314/ijbcs.v7i5.27
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Déterminisme de la feuillaison de <i>Acacia tortilis</i> (Forsk.) dans la réserve sylvopastorale de Sogobé, Ferlo, Nord-Sénégal

Abstract: Ce travail présente l'étude de la phénologie foliaire de Acacia tortilis dans la réserve sylvopastorale de Sogobé (16° 20'N et 15° 25' W) au Nord-Sénégal. Le suivi a porté sur les paramètres climatiques et les différents stades de la feuillaison. Les données du suivi phénologique ont été soumises à une analyse en composantes principales. Les précipitations de la pleine saison des pluies (août, septembre) sont supérieures à l'évapotranspiration potentielle (ETP) de 35% alors que le déficit de saturation de l'ai… Show more

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“…Young plants that can secure the future of the stands are absent and the regeneration of the species is compromised (Noumi, 2010). These anthropogenic factors are compounded by particularly difficult climatic factors in the Sahelian area (Diouf et al, 2013). In this area, the rainy period of the year barely exceeds 3 to 4 months (Laminou, 2009;CNEDD, 2011).…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Young plants that can secure the future of the stands are absent and the regeneration of the species is compromised (Noumi, 2010). These anthropogenic factors are compounded by particularly difficult climatic factors in the Sahelian area (Diouf et al, 2013). In this area, the rainy period of the year barely exceeds 3 to 4 months (Laminou, 2009;CNEDD, 2011).…”
Section: Introductionmentioning
confidence: 99%
“…Most natural seedlings do not exceed their first year. Indeed, A. tortilis spreads its fruits in April, shortly before the rainy season (Diouf et al, 2013). They fall to the ground and, as soon as the first rains soak up which induces a strong germinative response (Arbonnier, 2004).…”
Section: Introductionmentioning
confidence: 99%