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Modeling of Quaternary Groundwater Pollution Risk by GIS and Multicriteria Analysis in the Southern Part of Abidjan District(Cote d’Ivoire)

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Journal of Environmental Protection 2013年第11期4卷 1213-1223页

作者： innocent Kouassi Kouame Aristide Gountoh Douagui kouadio Koffi Brou Dibi Lazare Kouakou Kouassi Issiaka Savane Laboratoire de Geosciences et Environnement Universite Nangui AbrogouaAbidjanCote d’Ivoire Universite Jean Lorougnon Guede DaloaCote d’Ivoire

The pollution generated by human activities in the area “Vridi canal-Grand Bassam” puts more at risk the quaternary groundwater that supplies water to a large part of the population of the southern part of Abidjan city. This paper deals with the combined approach of geographic information systems and multicriteria analysis to delineate areas at risk of pollution of groundwater in the study area. The multicriteria analysis also incorporated the statistical and geostatistical techniques for defining the factor ratings and weightings of all the parameters under a GIS environment. The criterion for these factor ratings and weightings was the correlation coefficient of each parameter with the nitrates concentration in groundwater. Two indicators were combined for creating situations of pollution risks according to their importance: the intrinsic vulnerability indicators which combined the depth to groundwater, the net recharge, the slope, the soil media, the unsaturated hydraulic conductivity and extrinsic vulnerability characterized by the land use. The results showed that all to the site presents nitrate pollution risks with 50.7% of moderate risk, and 49.3% of high and very high risks. The areas which present the highest risks of pollution are the densely urbanized communes of Treichville, Marcory, Koumasi, Port-Bouet and Grand-Bassam. The sensitivity analysis indicates that parameters causing high sensitivity on the nitrate pollution risks map are the depth to groundwater and the recharge. The errors committed on the maps establishment are ±0.15%, ±0.40% and ±6% respectively for IV map, EV map and pollution risk map.

关键词： Pollution Risk Quaternary Groundwater GIS Multicriteria Analysis Sensitivity Analysis Abidjan

The Effect of Four Abiotic Factors on Macro-Anatomical Markers Development in Parkia biglobosa, Jack, R. Br., 1830 (Fabaceae) Crown

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American Journal of Plant Sciences 2021年第4期12卷 645-661页

作者： Beda innocent Adji Doffou Sélastique Akaffou kouadio Henri Kouassi Yao Patrice Houphouet Jerôme Duminil Sylvie Sabatier Université Jean Lorougnon Guédé Agroforestry UFR Daloa Cote d’Ivoire CIRAD UMR AMAP Montpellier France AMAP Université Montpellier CIRAD CNRS INRAE IRD Montpellier France IRD UMR-DIADE Montpellier Cedex 5 France DIADE Université Montpellier CIRAD IRD Montpellier France

Interpretation of primary growth markers (modules) is neglected in sustainable resource management processes, yet it opens up prospects for long time series on tree crown development, necessary for their characterization in the current context of climate change. This study aimed to assess the morphological variation of crown shoots in Parkia biglobosa in the face of a changing environment. Axis growth modules of 420 individuals of different ages were retrospectively analyzed in the presence or absence of shading during the wet and dry seasons in seven localities in Cote d’Ivoire. The results showed that the developmental environment of individuals did not influence the growth modules dimensions (P > 0.05). However, module size remained significantly different between locations (P Parkia biglobosa is a monochasial sympod (Pseudo-monopod) with a relay axis that follows the Paul Champagnat architectural model in the young stage, and transits to the Wilhelm Troll model later in the adult and old stage. This information contributes to the understanding of the functioning of crown and the adaptation of this species to a varying environment. It could guide choice of suitable environment and ideal genotype for the implementation of a reforestation or agroforestry programme based on Parkia biglobosa.

关键词： Parkia biglobosa Environment Development Growth Modules Crown

Influence of Different Environments on Germination Parameters and Seedling Morphology in Khaya senegalensis(Desr.) A. Juss (Meliaceae)

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American Journal of Plant Sciences 2020年第10期11卷 1579-1600页

作者： Beda innocent Adji Sélastique Doffou Akaffou kouadio Henri Kouassi Yao Patrice Houphouet Jerôme Duminil Sylvie Sabatier Université Jean Lorougnon Guédé Agroforestry UFR Departement for Seeds and Seedlings Production Daloa Cote d’Ivoire CIRAD UMR AMAP Montpellier France AMAP Université Montpellier CIRAD CNRS INRA IRD Montpellier France IRD UMR-DIADE Montpellier Cedex 5 France

Khaya senegalensis is one of the largest and most majestic trees in Africa. Overexploited for its precious wood and medicinal values, the natural stands of this species are in danger of extinction in Cote d’Ivoire. Its sustainable management through regeneration techniques and assessment of its degree of adaptation to the changing climate is necessary. The aim of this study is to evaluate the effect of different environments on seedling germination and development in Khaya senegalensis. A total of 2160 seeds from different mother plants and 540 individuals from seed germination were selected and evaluated. The trials were conducted on three sites that were distinct by their microclimate (two nurseries in Cote d’Ivoire and one greenhouse in France). Analysis of variance showed that germination and morphology parameters were not influenced by the characteristics of the mother plants used (p > 0.05), but rather by the study sites (P < 0.05). The stable and controlled greenhouse climate was more advantageous for latency time (12.66 ± 0.80 days), germination delay (16.96 96 ± 0.54 days), germination speed (19.66 ± 2.95 days), germination duration (10.83 ± 2.27 days) and germination rate (88.88 ± 7.97) with more vigorous sowing than the other two sites. The results showed in general that the higher the height of the seedlings, the thicker the diameter of the seedlings (r = 0.796) and the higher the number of leaves (r = 0.946). This savannah species is native to the arid zones of Africa, but this study highlighted its adaptive potential to changing and different climates. These results are decision support tools for the regeneration of native pioneer forest species with high agroforestry potential and socio-economi

关键词： Khaya senegalensis Environments Germination Parameters Greenhouse Côte d’Ivoire

Assessment of Anxiety among Caregivers at the Covid-19 Treatment Centers in Grand-Bassam and Cocody-Abidjan from July to September 2020

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Open Journal of Psychiatry 2023年第S1期13卷 410-420页

作者： Etobo innocent Ahounou kouadio Raymond N’Guessan Rita Ahou Aka Dion Aristide Gonce Gnonsian Estelle Gahy Yessonguilana Jean-Marie Yeo-Tenena UFR of Medical Sciences Université Félix Houphou&#235t-Boigny Abidjan Ivory Coast Service of Addictology and Mental Hygiene Institut National de Santé Publique Abidjan Ivory Coast UFR of Social and Human Sciences University Jean Lorougnon Guédé Daloa Ivory Coast Service of Addictology and Mental Hygiene National Institute of Public Health Abidjan Ivory Coast

The rapid spread of coronavirus disease (COVID-19) has led to general psychosis among the population in Ivory Coast. The medical profession, on the front line of the treatment, was in distress, given the risk of exposure to the patient. It is in this context that this study has set itself the objective of studying anxiety among caregivers involved in the management of people with COVID-19. This is a cross-sectional, descriptive and analytical study that included a sample of 50 stakeholders. It took place from July to September 2020 at the Treatment Center of the Village of Information Technologies and Biotechnology in Grand-Bassam (VITIB) and the Infectious Diseases Treatment Center (CTMI) of the University Hospital (CHU) of Cocody. The results indicate that caregivers were male in 52% of cases with an average age of 36 years. These are: doctors, nurses and caregivers respectively in the proportions of 18%, 42% and 40% with more than half (58%) who had more than 5 years of seniority. A proportion of 34% of caregivers felt they were insufficiently protected. The Hamilton Scale assessment of anxiety showed that 14% had mild anxiety, 6% moderate anxiety and 2% severe anxiety. There was no link between the degree of anxiety and professional seniority but also between the degree of anxiety and the marital situation. This work has therefore made it possible to see that anxiety is a real problem for caregivers dedicated to the management of COVID-19 patients.

关键词： COVID-19 Anxiety Assessment Nursing Staff Abidjan

Study of the Hydro-Chemical and Bacteriological Well Water Characteristics of M’Bahiakro (Central-Eastern Cote d’Ivoire)

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Journal of Geoscience and Environment Protection 2020年第4期8卷 32-46页

作者： HervéA.N’cho innocent K.Kouame kouadio Koff Lazare K.Kouassi Séraphin K.Konan Ruth Bai Andrei Sandu Ion Sandu Laboratory of Geosciences and Environment UFR Science and Environmental ManagementNangui Abrogoua UniversityAbidjanCote d’Ivoire Laboratory of Water and Environmental Engineering UFR EnvironmentJean Lorougnon GuédéUniversity of DaloaDaloaCote d’Ivoire Faculty of Materials Science and Engineering Gheorghe Asachi Technical University of IasiIasiRomania Center of Excellence Geopolymer&Green Technology(CeGeoGTech) School of Material EngineeringUniversiti Malaysia Perlis(UniMAP)KangarPerlisMalaysia Arheoinvest Centre Institute of Interdisciplinary ResearchDepartment of ScienceAlexandru Ioan Cuza UniversityIasiRomania

The use of well water by disadvantaged populations in most African cities often presents health risks. The purpose of this study is to determine the physico-chemical and microbiological quality of M’bahiakro well water. A series of physico-chemical, microbiological and piezometric analyses were carried out on the well water in the area. The results of these analyses were processed using Piper and Schoeller-Berkaloff diagrams and the software R 3.1.2 for Principal Component Analysis. Physico-chemical analysis results show that the water has an average temperature of 28°C. They are acidic, with a pH that generally varies from 4 to 6. M’bahiakro well waters are highly mineralized, with an average electrical conductivity of 369.1 μS/cm and 984.1 μS/cm and pass from sodium and potassium chlorinated facies in the dry season (February) to sodium chlorinated facies in the rainy season (October) with K+, Na+ and NO3- ions dominating. These ions would be the result of soil rainfall and the intervention of anthropogenic activities in the pollution of shallow groundwater. Bacteriological results exploitation shows that the well waters studied host high densities of enteritis bacteria (E. coli, Fecal streptococcus, and Clostridium perfringens) during the rainy period (October). M’Bahiakro’s well water is of poor quality and unsuitable for human consumption without prior treatment. However, they deserve particular attention and would require further treatment in rainy periods.

关键词： Well Groundwater Hydrochemistry Microbiology

The Architectural Unit Setting up and Architectural Characteristics of Néré, Parkia biglobosa, Jack, R. Br. (Fabaceae)

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American Journal of Plant Sciences 2022年第1期13卷 109-136页

作者： Beda innocent Adji Doffou Sélastique Akaffou Véronique Letort Mengzhen Kang Xiujuan Wang Marc Jaeger Philippe De Reffye kouadio Henri Kouassi Yao Patrice Houphouet Jerôme Duminil Yves Caraglio Sylvie Sabatier Université Jean Lorougnon Guédé UFR Agroforesterie Daloa C&#244 te d’Ivoire CIRAD UMR-botAnique et Modélisation de l’Architecture des Plantes et des végétations (AMAP) Montpellier France MICS CentraleSupélec-Université Paris-Saclay Gif-sur-Yvette France Key Laboratory of Management and Control for Complex Systems (CASIA-LMCCS) Institute of Automation Chinese Academy of Sciences Beijing China IRD UMR-DIADE Montpellier France

Parkia biglobosa is a much-loved and over-exploited African savannah species for its socio-economic importance. Knowing and taking into account its architectural unit, which is the basis for diagnosing phenology, productivity and tree health, could provide a new perspective on its sustainable management. The aim of this study is to establish the architectural development in Parkia biglobosa by retrospective analysis. To achieve this objective, 390 individuals of all sizes ranging from seedlings to senescent trees were observed and analysed under various soil and climatic conditions in Côte d’Ivoire. The results showed that Parkia biglobosa is a light plant but shading tolerant. It is a mixed vegetative axis plant, the stem is orthotropic* in its proximal part and plagiotropic* (collapsing) in its distal part in young stage. The tree then transitions to an adult and old stage into a tree with a plagiotropic* axis in the proximal and distal parts, the trunk is built up by superimposing collapsed relay axes that gradually straighten, branching is sympodial*, growth is defined and sexuality is terminal and lateral. The ontogeny takes place in three phases: initiation of development and establishment of the crown (young), then flowering and establishment of the architectural unity (adult) and finally the death of secondary axes in the crown, duplication of the architecture by a series of partial and total reiterations (old). The level of organisation is 5: the phytomere, the module or growth unit, the axis, the architectural unit and the reiterated complex. Retrospective analysis of the modules showed that the dimensions of the growth units are indicators of morphological variation and species adaptation to a changing climate (P R2 and

关键词： Parkia biglobosa Architectural Development Architectural Unit Côte d’Ivoire