scholarly journals Premières données sur les variations saisonnières de la communauté d’oiseaux du barrage urbain de Koko (Korhogo, Côte d’Ivoire)

2019 ◽  
Vol 41.2 ◽  
pp. 6926-6939
Author(s):  
NIAMIEN Coffi Jean Magloire ◽  
KONAN Ekoun Michaël ◽  
ODOUKPE Kadio Saint Guillaume ◽  
YAOKOKORE-BEIBRO Kouassi Hilaire ◽  
N’GORAN Kouakou Eliézer
Keyword(s):  
Cote D'ivoire ◽  
Rainy Season ◽  
Côte D’Ivoire ◽  
Well Being ◽  
Dry Season ◽  
Resident Species ◽  
Cote D’Ivoire ◽  
South Central ◽  
Frequent Species ◽  
Côte D'ivoire

Les oiseaux rendent d’importants services écologiques nécessaires au bien-être de l’homme. En Côte d’Ivoire, l’essentiel des études ornithologiques se sont déroulées au sud, et accessoirement au centre et au centre-ouest. En outre, très peu de travaux ont porté sur les zones humides. La ville de Korhogo abrite des barrages à vocation agro-pastorale qui n’ont été l’objet d’aucune étude. Pour combler ce manque de connaissance, une étude a été menée de février 2016 à janvier 2017. L’objectif de ce travail est d’évaluer la richesse spécifique et de déterminer l’influence des saisons sur la distribution qualitative de la communauté des oiseaux du barrage urbain de Koko dans la commune de Korhogo. Pour ce faire, des observations directes, utilisant la méthode des transects ponctuée d’arrêts d’environ 15 minutes, ont été effectuées. Les résultats indiquent que cette communauté est constituée de 63 espèces d’oiseaux appartenant à 32 familles et regroupées en 14 ordres. Globalement, l’ordre des Passériformes et la famille des Ardeidae sont les mieux représentés. Du point de vue de leur statut biogéographique, les espèces résidentes (37 individus : 59 %) et accidentelles (23 individus : 36,51%) sont majoritaires. Le plus grand nombre d’espèces a été observé en saison des pluies (52 individus : 82,54%). Sept espèces ont été spécifiques de la saison sèche alors que trois espèces sont caractéristiques de la saison des pluies. Les espèces résidentes ont été les nombreuses en toute saison. Au niveau structural, les espèces accessoires, les espèces assez-fréquentes et les espèces fréquentes ont été les mieux représentées en saison sèche tandis que les espèces assez-fréquentes ont été majoritaires en saison des pluies. Cette étude confirme la distribution des communautés des oiseaux selon les saisons. ABSTRACT Birds provide important ecosystem services necessary for human well-being. In Côte d'Ivoire, ornithological studies were carried out in the south, central and central-west. In addition, very little work has been done on wetlands. The Commune of Korhogo is home to agro-pastoral dams that have not been studied. To fill in this gap of information, a study was conducted from February 2016 to January 2017. The aim of this study was to assess the specific richness and to examine the effect of seasons on the qualitative distribution of the Koko urban dam birds’ community. Direct observations using the method of line transects with a 15 minutes points were carried out. Results show that this community consists of 63 species of birds belonging to 32 families and grouped in 14 orders. Globally, the order of the Passeriformes and the family of Ardeidae were the best represented. In terms of their biogeographical status, resident species (37 individuals: 59%) and accidental species (23 individuals: 36.51%) were dominant. The high number of bird species was observed during the rainy season (52 individuals: 82.54%). Seven species were specific to the dry season while three species are characteristic of the rainy season. Resident species were numerous in all seasons. The accessory and relatively frequent species have been the most abundant during the dry season while the fairly frequent species were predominant in the rainy season. This study confirms the distribution of bird communities according to the seasons.

scholarly journals From the Efficiency of Berlese Tullgren Funnel to the Spatiotemporal Variation of Two Uropodina Genera, Afrotrachytes Kontschán, 2006 and Trachyuropoda Berlese, 1888 (Acari, Mesostigmata) in Côte d’Ivoire

2018 ◽  
Vol 11 (1) ◽  
pp. 2201-2217
Author(s):  
Dr. NDRI Kouadio Julien ◽  
Arnauth M. Guaci ◽  
Thierry Hance ◽  
Joseph G. Yaco ◽  
Jean-Luc D.S. Ahui ◽  
...  
Keyword(s):  
Cote D'ivoire ◽  
Rainy Season ◽  
Côte D’Ivoire ◽  
Soil Depth ◽  
Dry Season ◽  
Spatiotemporal Variation ◽  
Primary Forest ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Preliminary Study

Due to their interaction with many other small Arthropods, Uropodina mites can be considered as good indicators of soil fauna of forest litter. In order, to better understand their distribution and phenology according to forest type four sites from primary forest to plantations were sampled in 2008 in Côte d’Ivoire: 1- the Lamto savannah (6°13' N, 5°02' W), 2- Oumé primary forest (6°31’ N, 5°30’ W), 3- Oumé teak plantation (6°31’ N, 5°30’ W) all situated in the Sudanese domain and finally, 4- the Taï primary forest (5°45’ N, 7°07 W) located in the Guinean domain. After a preliminary study devoted to the efficiency of Berlese Tullgren funnel, the spatiotemporal variation of two Uropodina genera - Afrotrachytes Kontschán, 2006 and Trachyuropoda Berlese, 1888 - was assessed. We hypothesized that the abundance of Uropodina would be higher in primary forest and lower in savannah and monospecific plantation. Whatever the season, we expected that the abundance of Uropodina would decrease with soil depth and would vary along transect. On each site, 15 sampling points were allocated over a 14-m transect with 1m intervals between two consecutive points. For each sampling point, 9 cores (litter, 0-5, 5-10, 10-15, 15-20, 20-25, 25-30, 30-35 and 35-40 cm) were taken with a steel corer (Ø 3.5 cm). Thus, a total of 1,080 soil cores were collected over two sampling periods from January to March 2008 (dry season) and August to October 2008 (rainy season). Soil physico-chemical parameters were also characterized. Mites were extracted using the Berlese-Tullgren funnels for one week after testing the extraction duration in a preliminary study. The bulbs lighting as soon as the soil cores were placed in Berlese Tullgren gave better results regarding the abundance of extracted mites. The results showed that the abundance of Afrotrachytes sp and Trachyuropoda sp was higher in rainy season, and varied significantly through the sites, whatever the season. The highest abundances of Afrotrachytes sp were observed in Oumé primary forest whereas those of Trachyuropoda sp were recorded in Oumé primary forest, and in Lamto savannah, whatever the season. Apart from the distribution of Trachyuropoda sp in dry season, the abundance of Afrotrachytes sp and Trachyuropoda sp was greater in the topsoil (litter and 0-5 cm) and decreased with soil depth. The abundances of Afrotrachytes sp and Trachyuropoda sp did not follow a normal distribution along the transects. The season-soil depth interaction affected significantly the abundance of Trachyuropoda sp whereas the bulk density (dry season and rainy season), soil depth (dry season), carbon / nitrogen ratio (dry season) impacted significantly the abundance of Afrotrachytes sp. This first study highlighted the spatiotemporal variation of Uropodina in Côte d’Ivoire. However, taking into account of the different dispersal agents in future studies would help us to better understand their abundance and distribution along different habitats, as well as their role as biological control agents.

Prevalence, Risk Factors and Morbidity Profile of Schistosoma Infection Among Adults in the Taabo Health and Demographic Surveillance System, South-central Côte d’Ivoire

2021 ◽  
Author(s):  
Fidèle K. Bassa ◽  
Ikenna C. Eze ◽  
Rufin K. Assaré ◽  
Clémence Essé ◽  
Siaka Koné ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cote D'ivoire ◽  
Surveillance System ◽  
Côte D’Ivoire ◽  
Demographic Surveillance System ◽  
Urine Samples ◽  
Health Examination ◽  
Cote D’Ivoire ◽  
South Central ◽  
Côte D'ivoire

Abstract Background: Schistosomiasis remains an important public health issue among adults and infected individuals not treated serve as a reservoir of the parasite. Despite this fact, evidence on the epidemiology of schistosomiasis in adults in Côte d’Ivoire is scanty. This study aimed to determine the prevalence and risk factors of schistosomiasis among adults in the Taabo health and demographic surveillance system in the south-central part of Côte d’Ivoire.Methods: A cross-sectional survey was carried out in April and May 2017 in the frame of the “Côte d’Ivoire Dual Burden of Disease Study” (CoDuBu). A total of 901 randomly selected individuals, aged 18-90 years, provided blood, stool and urine samples for the diagnosis of malaria and helminth infections. With an emphasis on schistosomiasis, stool samples were subjected to the Kato-Katz technique for detection of Schistosoma mansoni eggs, while urine samples were examined for eggs of Schistosoma haematobium and circulating cathodic antigen of S. mansoni. Risk factors and morbidity profiles were assessed using health examination and questionnaires. Multinomial logistic regressions were employed to identify independent risk factors and morbidity patterns associated with S. mansoni mono- and co-infections.Results: The prevalence of S. mansoni and S. haematobium was 23.2% and 1.0%, respectively. Most S. mansoni were mono-infections (81.3%). Independent determinants of S. mansoni infection were young age, low socioeconomic status (mono- and co-infection) and poor hygiene practices (co-infection). S. mansoni infection was independently associated with higher pain and symptom scores (mono-infection), poor self-rated health and low healthcare use (co-infection).Conclusions: This study showed that adults represent a substantial reservoir of S. mansoni. To sustain schistosomiasis control and improve people’s wellbeing, it is important to expand preventive chemotherapy from school-aged children to adults, coupled with hygiene and health education.

Effects of Planting Bed and Density on the Yield of Pineapple (Ananas comosus L. var., MD2) Grown in Short Rainy Season in Southern Côte d’Ivoire

2016 ◽  
Vol 11 (1) ◽  
pp. 18-25
Author(s):  
Ouattara Genefol ◽  
Camara Brahima ◽  
Bomisso Edson Lezi ◽  
Cherif Mamadou ◽  
Sorho Fatogoma ◽  
...  
Keyword(s):  
Cote D'ivoire ◽  
Rainy Season ◽  
Côte D’Ivoire ◽  
Ananas Comosus ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Short Rainy Season

scholarly journals Mild riboflavin deficiency is highly prevalent in school-age children but does not increase risk for anaemia in Côte d'Ivoire

2007 ◽  
Vol 97 (5) ◽  
pp. 970-976 ◽  
Author(s):  
Fabian Rohner ◽  
Michael B. Zimmermann ◽  
Rita Wegmueller ◽  
Andreas B. Tschannen ◽  
Richard F. Hurrell
Keyword(s):  
Iron Deficiency ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
School Age Children ◽  
Riboflavin Deficiency ◽  
Cote D’Ivoire ◽  
South Central ◽  
Côte D'ivoire ◽  
Iron Deficient ◽  
Riboflavin Deficient

There are few data on the prevalence of riboflavin deficiency in sub-Saharan Africa, and it remains unclear whether riboflavin status influences the risk for anaemia. The aims of this study were to: (1) measure the prevalence of riboflavin deficiency in children in south-central Côte d'Ivoire; (2) estimate the riboflavin content of the local diet; and (3) determine if riboflavin deficiency predicts anaemia and/or iron deficiency. In 5- to 15-year-old children (n281), height, weight, haemoglobin (Hb), whole blood zinc protoporphyrin (ZPP), erythrocyte glutathione reductase activity coefficient (EGRAC), serum retinol, C-reactive protein (CRP) and prevalence ofPlasmodiumspp. (asymptomatic malaria) andSchistosoma haematobium(bilharziosis) infections were measured. Three-day weighed food records were kept in twenty-four households. Prevalence of anaemia in the sample was 52 %; 59 % were iron-deficient based on an elevated ZPP concentration, and 36 % suffered from iron deficiency anaemia.Plasmodiumparasitaemia was found in 49 % of the children. Nineteen percent of the children were infected withS. haematobium. Median riboflavin intake in 5- to 15-year-old children from the food records was 0·42 mg/d, ~47 % of the estimated average requirement for this age group. Prevalence of riboflavin deficiency was 65 %, as defined by an EGRAC value >1·2. Age, elevated CRP and iron deficiency were significant predictors of Hb. Riboflavin-deficient children free of malaria were more likely to be iron deficient (odds ratio; 3·07; 95 % CI 1·12, 8·41). In conclusion, nearly two-thirds of school-age children in south-central Côte d'Ivoire are mildly riboflavin deficient. Riboflavin deficiency did not predict Hb and/or anaemia, but did predict iron deficiency among children free of malaria.

scholarly journals Physico-chemical characterization of urban aerosols from specific combustion sources in West Africa at Abidjan in Côte d'Ivoire and Cotonou in Benin in the frame of the DACCIWA program

2020 ◽  
Vol 20 (9) ◽  
pp. 5327-5354 ◽  
Author(s):  
Aka Jacques Adon ◽  
Catherine Liousse ◽  
Elhadji Thierno Doumbia ◽  
Armelle Baeza-Squiban ◽  
Hélène Cachier ◽  
...  
Keyword(s):  
Organic Carbon ◽  
West Africa ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Dry Season ◽  
Water Soluble ◽  
Wet Season ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Combustion Sources

Abstract. Urban air pollution in West Africa has yet to be well characterized. In the frame of DACCIWA (Dynamics-Aerosol-Chemistry-Cloud Interactions in West Africa) program, intensive measurement campaigns were performed in Abidjan (Côte d'Ivoire) and Cotonou (Benin), in dry (January 2016 and 2017) and wet (July 2015 and 2016) seasons, at different sites chosen to be representative of African urban combustion sources, i.e., domestic fires (ADF), traffic (AT) and waste burning (AWB) sources in Abidjan and traffic source in Cotonou (CT). Both the size distribution of particulate matter (PM) and their chemical composition including elemental carbon (EC), organic carbon (OC), water-soluble organic carbon (WSOC), water-soluble inorganic ions (WSI) and trace metals were examined. Results show very high PM concentrations at all sites and a well-marked seasonality as well as a strong spatial variation. The average PM2.5 mass concentrations during the wet season are 517.3, 104.1, 90.3, and 69.1 µg m−3 at the ADF, CT, AT, and AWB sites, respectively. In the dry season, PM2.5 concentrations decrease to 375.7 µg m−3 at the ADF site, while they increase to 269.7, 141.3, and 175.3 µg m−3 at the CT, AT, and AWB sites, respectively. The annual PM2.5 levels at almost all sites are significantly higher than the WHO guideline level of 10 µg m−3. As for PM mass, (EC) and (OC) concentrations are also maximal at the ADF site, accounting for up to 69 % of the total PM mass. Such a high content is mainly linked to wood burning for domestic cooking and commercial food smoking activities. Dust contributions are dominant at CT (57 %–80 %), AT (20 %–70 %), and AWB (30 %–69 %) sites and especially in the coarse and fine-particle modes at the CT site and in the coarse fraction at the AT site, which may be explained by the impact of long-range desert-dust transport and resuspended particles from the roads, in addition to anthropogenic sources. The contributions of WSI to the total PM mass, mainly driven by chloride, nitrate, and calcium in the fine and/or large particles, are highly variable according to the sites but remain less than 30 %. Values are generally 1–3 times higher in the wet season than in the dry season. This is due not only to anthropogenic emissions but also to nitrate formation by reaction processes and natural emissions. The concentrations of trace elements reflect well the trends in dust at the traffic and AWB sites, with a predominance of Al, Na, Ca, Fe, and K, keys markers of crustal dust. This study constitutes an original database that characterizes specific African combustion sources.

scholarly journals Analysis of Substitute Products in the Demand for Food Products in Côte D’Ivoire

2017 ◽  
Vol 5 (4) ◽  
pp. 35
Author(s):  
Tite Beke
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Well Being ◽  
Food Prices ◽  
Cote D’Ivoire ◽  
Animal Products ◽  
Root Crops ◽  
Côte D'ivoire ◽  
Staple Foods ◽  
The Impact

This study analyzes the demand for staple foods in Côte d’Ivoire and assesses the impact of fluctuations in food prices on household well-being. It focuses on the price- and income elasticities of food demand, as they are useful parameters for measuring households’ reaction to the changes in prices and incomes, and for improving food policies. The study also assesses the loss in well-being arising from food crises with a view to recommending more effective measures for supporting households. It uses an approach that estimates a Quadratic Almost Ideal Demand System (QUAIDS) in order to highlight price and expenditure elasticities. The data used in the study were obtained from the National Household Living Standards Survey (ENV) conducted by the National Institute of Statistics (INS) in 2008. The estimated expenditure- and price elasticities show that the four food clusters under analysis (cereals, root crops and tubers, fruit and vegetables, and animal products) were staple foods that were price inelastic for all the households. A substitutability relationship is observed between cereals, and root crops and tubers. However, animal products and vegetables are found to be complementary to each other and complementary to cereals and root crops and tubers.

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