Caractérisation de la végétation ligneuse sahélienne du Sénégal: cas du Ferlo

Aïssatou Ndong,O. Ndiaye,M. B. Sagna,A. Diallo,D. Galop,A. Guisse

Published 2016 in International Journal of Biological and Chemical Sciences

ABSTRACT

Cette etude vise a evaluer la diversite floristique et la structure du peuplement ligneux de six villages du Ferlo (Keur Momar Sarr, Syer, Mbar toubab, Widou thiengoly, Tessekere et Labgar). Chaque site a ete prospecte puis echantillonne par la methode des releves dendrometriques. La richesse specifique totale est de 38 especes, elle varie en fonction des sites et est moins importante a Keur Momar Sarr et Syer. Les indices de diversite de Shannon et de regularite evalues n'ont pas trop varie en fonction des sites. Ils sont plus faibles a Tessekere et plus eleves a Mbar toubab. L'evaluation de la structure horizontale et verticale, montre une predominance de la strate arbustive. L'Analyse Factorielle des Correspondances a permis de discriminer trois groupements vegetaux en etroite relation avec la localisation geographique et la geomorphologie des sites. Ainsi, dans le cadre d'une gestion durable et rationnelle des ressources naturelles en milieu sahelien, cette etude apporte des informations complementaires sur l'etat actuel des peuplements ligneux du Ferlo. © 2015 International Formulae Group. All rights reserved. Mots cles: Peuplement ligneux, diversite floristique, structure, Ferlo English Title: Characterization of the Sahelian woody vegetation of Senegal: case of Ferlo English Abstract This study aims to evaluate the floristic diversity and timber stand structure of six villages of Ferlo (Keur Momar Sarr, Syer, Mbar Toubab, Widou Thiengoly, Tessekere and Labgar). Each site was prospected and sampled by the dendrometric survey method. Total specific richness was 38 species; it varies depending on the site and is less important in Keur Momar Sarr and Syer. Shannon diversity indices and estimated regularity did not vary too much depending on the site. They are lower in Tessekere and higher in Mbar Toubab. The assessment of horizontal and vertical structure shows a predominance of the shrub layer. The Correspondence Analysis allowed to discriminate three plant groups closely related to the geographical location and the geomorphology of the sites. Thus, within the framework of sustainable and rational management of natural resources in the Sahel, this study provides additional information on the current state of timber stands in Ferlo. © 2015 International Formulae Group. All rights reserved. Keywords: Woody stand, floristic diversity, structure, Ferlo

PUBLICATION RECORD

  • Publication year

    2016

  • Venue

    International Journal of Biological and Chemical Sciences

  • Publication date

    2016-05-12

  • Fields of study

    Not labeled

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  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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