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Influence of Topography on the Distribution and Structure of Woody Plants in the Senegalese Sahel (Sandy Ferlo)

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American Journal of Plant Sciences 2024年第1期15卷 14-28页

作者： Moustapha Bassimbe Sagna Aïssatou Ndong Thiam Khoudia Niang Oumar Sarr Aly Diallo Sekouna Diatta Daouda Ngom aliou guissé Department of Plant Biology Faculty of Science and Technology Cheikh Anta Diop University Dakar Senegal IRL 3189 “Environment Health Society” Tessekere Human Environment Observatory (Senegal) Dakar Senegal Department of Agronomy and Plant Production El Hadji Ibrahima Niasse University Kaolack Senegal Department of Agroforestry Assane Seck University Ziguinchor Senegal

This study describes the floristic composition and structure of a woody stand in the Senegalese Sahel, paying particular attention to the edaphic factors of its floristic composition. A stratified inventory considering the different relief units was adopted. Woody vegetation was surveyed using a dendrometric approach. The results obtained show that the flora is dominated by a few species adapted to drought, such as Balanites aegyptiaca (L.) Del., Calotropis procera Ait. and Boscia senegalensis (Pers.). The distribution of this flora and the structure of the ligneous plants are linked to the topography. In the lowlands, the flora is more diversified and the ligneous plants reach their optimum level of development compared with the higher relief areas. In the lowlands, there are a few woody species which, in the past, were indicative of better climatic conditions. These are Anogeissus leiocarpus (DC.), Commiphora africana (A. Rich.), Feretia apodanthera Del., Loeseneriella africana (A. Smith), Mitragyna inermis (Willd.) and Sclerocarya birrea (A. Rich). It is important that their reintroduction into reforestation projects takes account of their edaphic preference.

关键词： Woody Plants Distribution Topography Ferlo Senegal

Diversity and Structure of the Woody Stand in a Sudano-Sahelian Transition Zone in Senegal

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Influence of Topography on the Distribution and Structure of Woody Plants in the Senegalese Sahel (Sandy Ferlo)

Open Journal of Ecology（生态学期刊） 2024年第1期

作者： Oumar Sarr Moustapha B. Sagna Amy Bakhoum Sékouna Diatta aliou guissé

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Physicochemical Characterization of Nine Cassava (<i>Manihot esculenta</i>Crantz) Cultivars from Chad

American Journal of Plant Sciences（美国植物学期刊） 2024年第1期

作者： Moustapha Bassimbe Sagna Aïssatou Ndong Thiam Khoudia Niang Oumar Sarr Aly Diallo Sekouna Diatta Daouda Ngom aliou guissé

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Food and Nutrition Sciences 2020年第7期11卷 741-756页

作者： Djirabaye Nadjiam Nicolas Cyrille Ayessou aliou guissé Institut Tchadien de Recherche Agronomique Pour le Développement (ITRAD) N’Djaména Tchad Centre d’études sur la Sécurité Alimentaire et les Molécules Fonctionnelles (CESAM) Ecole Supérieure Polytechnique Dakar Sénégal Département de Biologie Végétale Faculté des Sciences et Techniques (FST) Université Cheikh Anta Diop (UCAD) Daka Sénégal Observatoire Homme Milieux Téssekeré (OHM-Téssekeré) Université Cheikh Anta Diop de Dakar Dakar Sénégal

In Chad, despite the multiple culinary uses of cassava leaves and tubers, their nutritional values are untapped. In this study, the physicochemical compositions and structure of nine cultivars were assessed. The proteins were obtained by Kjeldahl’s method. Total sugars were determined according to the Luff-Schoorl method. For starch content, the polarimetric method of Earle and Milner was used. Mineral elements were carried out using an atomic absorption spectrophotometry. The cyanide was evaluated by the method of Williams and Edwards. Significant variability has been demonstrated in the leaves and dry tubers except for water content and dry matter. Analysis of the variances of the components of the tubers reveals that the water contents of the cultivars vary from 5.01% to 5.86%. The ash contents vary from 4.23% (cultivar DVA2) to 8.32% (cultivar DVL2). For total sugars, the values are between 53.63% (cultivar DVL2) and 57.99% (cultivars DVL12 and KA0303). The fiber contents are lower and vary from 1.74% (cultivar DVL12) to 1.92% (cultivars SB1366, DVA2, TL0101 and PG1314). The starch content varies from 28.93% (cultivar DVL12) to 31.05% (cultivar SB1366). The variations in mineral constituents of the tubers in mg/100g are Ca (145.21 - 250.08), Mg (83.89 - 165.22), P (147.34 - 360.78), K (1534.50 - 3064.09), Zn (0.75 - 0.82) and Mn (0.78 - 0.89). Iron concentrations are from 7.72 mg/100g (cultivar BA0909) to 60.62 mg/100g (cultivar DVA2). Analysis of the variances of the leaf constituents reveals high contents of Calcium for SB1366 (2108.41 mg/100g), of iron (Fe 54.26 mg/100g) and potassium (K 1866.86 mg/100g) for DVL12, of phosphorus for TL0101 (471.87 mg/100g), of phosphorus (470.36 mg/100g)

Ruptured Sub-Annular Mitral Aneurysm in the Pericardium: Report of a Case

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World Journal of Cardiovascular Diseases 2021年第9期11卷 458-463页

作者： Elhadj Yaya Baldé Mamadou Bassirou Bah Amadou Djouldé Doumbouya Aissatou Tiguidanké Baldé Mamadou Cellou guissé Ibrahima Sory Barry Alpha Koné Mariam Béavogui Souleymane Diakité Ibrahima Sory 2 Sylla Mamadou aliou Baldé Abdoulaye Camara Mamadou Diallo Thierno Siradjo Baldé Mamadou Dadhi Baldé Mamady Condé Cardiology Department of the Ignace Deen Hospital Conakry Guinea Cardiology Department of Donka Hospital Conakry Guinea

The sub-mitral annular aneurysm is a rare cardiac pathology. The etiologies are diverse, ranging from the congenital form to the idiopathic form, including the acquired form. The clinical case we report is that of a 27-year-old young man, with no particular history, admitted with a picture of global heart failure. A cardiac ultrasound diagnosed a ruptured mitral sub-annular aneurysm in the pericardium. The difficulty lies in the surgical management of this condition, due to the lack of an adequate cardiac surgery service in most of the countries in Africa south of the Sahara.

关键词： Sub-Annular Aneurysm Mitral Valve Intrapericardial Rupture