Publications scientifiques

[hal-03570432] Coming back to a Commons approach to construct the Great Green Wall in Senegal

Since the 1970s, the Sahel region has been struck by severe droughts that has brought suffering to human populations. Scientists also observed declining rainfall leading to desertification in the zone. Against this backdrop, in 2007, several African states launched the international Great Green Wall (GGW) project that aimed to create a strip of forest from Senegal to Djibouti, crossing areas mostly devoted to pastoralism. We examined the social, land tenure and environmental implications of the GGW in Senegal, in the light of policies for pastoral intensification of the zone. The colonial heritage of the foresters from the Senegalese National Green Wall Agency who implement the project on the ground influences how reforestation is managed today. To understand how local populations relate to the space affected by the project and their resources, we organized participatory workshops in four contrasted study sites along the Senegalese portion of the GGW path. Our results[…]

[hal-03375913] Toxicity and bacterial anti-motility activities of the hydroethanolic extract of Acacia senegal (L.) Willd (Fabaceae) leaves

Abstract Background Acacia senegal is a plant traditionally used for its various properties, including the treatment of infectious diseases. Recently, our team has demonstrated the ability of the hydroethanolic extract of the leaves to increase the activity of phenicol antibiotics against multi-resistant bacteria. The aim of this work is to determine the toxicological effects of the extract and its capacity to inhibit the bacterial mobility of Gram-negative bacteria, in order to evaluate the level of safety use of this plant. Methods The cytotoxicity test was performed using the neutral red absorption method. Acute and sub-acute oral toxicity were conducted on NMRI mice and Wistar rats. The behaviour and adverse effects were recorded during the 14 days of the acute study. For the subacute test, biochemical parameters, food and water consumption, and morphological parameters were determined. The anti-motility activities were evaluated on Pseudomonas aeruginosa PA01 and Escherichia coli AG100, using specific concentrations[…]

[hal-03258873] The good life in rural and urban Senegal: A qualitative and quantitative study

Very few studies have analyzed the influence of the environment, rural or urban, on the notion of good life and subjective well-being in sub-Saharan Africa and none, to our knowledge, has combined qualitative and quantitative methodologies for this purpose. The objectives of this interdisciplinary study were: a) to understand the emic representations of the good life in rural and urban Senegal and; b) to compare the levels and determinants of satisfaction with life between these two populations. This study was carried out in Dakar and in a very isolated rural area in the North East of Senegal: the sylvo-pastoral zone of Ferlo. A total of six focus groups were conducted for the qualitative phase, while the quantitative phase was conducted on representative samples of the populations living in Dakar (N = 1000) and Té ssé ké ré (N = 500). Our results indicate that, against all expectations, life satisfaction is[…]

[hal-03149548] Evaluation of the Aerial Biomass of Three Sahelian Species in the Ferlo (North Senegal): Acacia tortilis (Forsk.) Hayn essp. Raddiana (Savi) Brenan, Acacia senegal (L.) Willd and Balanites aegyptiaca (L.) Del

In a context of climate change characterized by rising temperatures, increased greenhouse gases and frequent droughts, the Sahel is presented as one of the most vulnerable areas to the adverse effects of climate change. The Sahel is presented as one of the most vulnerable areas to the adverse effects of climate change. The objective of this study is to assess the above-ground biomass and carbon stock of three Sahelian species: Acacia raddiana tortilis (Forsk.) hayne ssp. raddiana (savi) Brenan, Acacia senegal (L.) Willd and Balanites aegyptiaca (L.). The study was carried out in northern Senegal commonly known as Ferlo. Biomasses of the populations of the three target species were first assessed by harvesting the entire epigenetic part of the species and then modelled by correlation using dendrometric parameters measured on each individual of the sample. Two models, mono-specific and multi-species, were used. The results obtained showed that the diameter at[…]

[hal-02936342] Diversité et composition phytochimique des plantes utilisées comme bâtonnets frotte-dents (cure-dents) par les Peul de la commune de Tessekere (Ferlo Nord Sénégal)

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[hal-02877571] Ethno Apicultural Survey of Melliferous Plant Species in the Great Green Wall Widou and Koyli Alpha, Senegal

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[hal-02380101] Activités antimicrobiennes des plantes utilisées comme bâtonnets frotte-dents (cure-dents) par les Peul de la commune de Tessékéré (Ferlo Nord, Sénégal)

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[hal-02157343] Craticula widouensis, a new diatom (Bacillariophyta) species of a Sahelian temporary pond (North Senegal).

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[hal-02138948] La Grande Muraille Verte. Une réponse africaine au changement climatique

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[hal-02138927] The Great Green Wall for the Sahara and the Sahel Initiative as an opportunity to enhance resilience in Sahelian landscapes and livelihoods

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[hal-01792183] Impact de la Grande Muraille Verte Sénégal sur la biodiversité des insectes dans le Ferlo (Sénégal)

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[hal-01760776] Analysis of dendrometric characteristics of Acacia senegal (L.) Willd. (Fabaceae) in the semi-arid Sahelian area: A case study of silvopastoral zone in Senegal

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[hal-01741545] Déterminants médicosociaux de l’état de santé en milieu rural sénégalais : étude au niveau de deux sites de la Grande Muraille Verte

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