Eboua Wandan | Institut National Polytechnique Félix Houphouët-Boigny (original) (raw)

Papers by Eboua Wandan

Research paper thumbnail of Evaluation of anti termites sold in Cote d'Ivoire against termites damage on woods of selected timbers

International Journal of Agricultural Policy and Research, 2015

Termites are known to cause tremendous losses to wood and wooden structures in buildings, besides... more Termites are known to cause tremendous losses to wood and wooden structures in buildings, besides loss in agriculture and forestry crops. For controlling termites, synthetic termiticides have been used in Cote d'Ivoire. This study aims at evaluating the preservation efficiency of anti-termites sold in the country. Four anti-termite chemicals, two largely used but not homologizes and two homologized were used to treat four timber wood boards. The results indicated that wood boards which are not treated loosed weight compared to the treated ones. Besides that, white woods seemed to be more protected compared to red wood probably due to better absorption of termicides solution by white woods which are softer than the red ones which are hard. The results indicated also that albeit, the type of application of the termicides, there are no difference between the protection bestowed by the chemicals. Above all, all the four termicides found in the market seemed to present the same level of protection against the termites' attacks. The problem was that pyrical and phosgene were homologated whereas the two others did not go any efficacy test or homologation. Some of the termiticides contained banned pesticides and should be removed from the market.

Research paper thumbnail of Effects of sun-dried stylo hay (stylosanthes guianensis cv ciat 184) on rabbits growth and slaughter performances

The effect of sun-dried Stylo hay (Stylosanthes guianensis cv CIAT 184) level in complete pellet ... more The effect of sun-dried Stylo hay (Stylosanthes guianensis cv CIAT 184) level in complete pellet diet was studied on growth and slaughter performances of local hybrid rabbits in Côte d'Ivoire. Four diets containing 0% (control: Sg0), 10% (Sg10), 20% (Sg20) and 30% (Sg30) of Stylo respectively were produced and distributed ad libitum to 4 batches of 12 rabbits from weaning (35 d, mean weight: 613 ± 29 g) to 91 days old. Rabbits receiving the Sg30 diet had the best daily weight gain of 30.4 g / d (+ 16%, P <0.001) and the highest feed intake (+ 7%, P <0.001) compared to the control Sg0. Feed conversion rate was better with the Sg20 and Sg30 diets (-0.45, P <0.001) compared to the control diet. Animals' health was not affected by Stylo incorporation rate in the diet. In addition, the cold carcass weight was better with the Sg20 and Sg30 diets compared to the control (+12%, P <0.001). It was concluded that sun-dried Stylo hay could be incorporated in rabbits complete pelleted feed up to 30%, as source of fibres.

Research paper thumbnail of Data for: "Exploring Wildfire Occurrence: Local Farmers' Perceptions and Adaptation Strategies in Central Côte d'Ivoire, West Africa

This file contains records on 259 surveyed people in central Cote d'Ivoire.

Research paper thumbnail of Exploring Wildfire Occurrence: Local Farmers’ Perceptions and Adaptation Strategies in Central Côte d’Ivoire, West Africa

Journal of Sustainable Forestry

ABSTRACT Wildfires are an important ecological threat in Côte d’Ivoire with the northern half the... more ABSTRACT Wildfires are an important ecological threat in Côte d’Ivoire with the northern half the most affected zone. This study assessed farmers’ perception of wildfire occurrence in the N’Zi River Watershed and compared this perception to remotely sensed fire data trends. To this end, 259 farmers were individually interviewed and 18 farmers were involved in three focus group discussions in three agro-ecological zones. A combination of descriptive statistics and regression analysis was used for data analysis. Results showed that 78.75% of farmers observed the upward trend in the annual wildfire activity identified by remote sensing data during 2001–2016. Most of the respondents identified hunting (65.83%), farm establishment (50%) and firebreaks establishment (46.67%) as main causes of wildfires. The perceived impacts of wildfires included immediate crop burning, crop growth delaying, mid-term post-fire crop destruction, destruction of material goods and loss of human life. Local population developed endogenous strategies to cope with this scourge. Amongst identified coping strategies, firebreaks establishment and maintenance around new clearings and farms and prohibition of fire-hunting during the dry season were highlighted. Therefore, policies and institutions that support local wildfires management initiatives must take advantage of the strong community knowledge and networks to strengthen their effectiveness and sustainability.

Research paper thumbnail of Dara for: "Exploring Wildfire Occurrence: Local Farmers' Perceptions and Adaptation Strategies in Central Côte d'Ivoire, West Africa

This file contains records on 259 surveyed people in central Cote d'Ivoire.

Research paper thumbnail of Diversity of Woody Flora around two Apiaries in the Badenou Protected Forest (Northern Cote d-Ivoire)

This study aimed at analyzing the floristic diversity of the woody vegetation around two experime... more This study aimed at analyzing the floristic diversity of the woody vegetation around two experimental apiaries installed in the Badenou classified forest. A surface survey was carried out and the number of species, genera, families, Shannon, and Piélou indices were determined. The similarity coefficients of Jaccard and Sorensen were calculated to compare the two sites. An average floristic richness was observed with 96 species grouped into 72 genera and 30 families. The Shannon and Piélou indices were found to be 3.76 and 0.82 respectively. Except the Piélou index, all the determined floristic diversity parameters varied significantly according to the type of vegetation. Thus, the species richness varies from 7.50 ± 2.12 in grass savannah to 21.14 ± 7.06 in open forest; the number of families from 5.50 ± 2.12 in grass savannah to 11.57 ± 4.28 in opens forest, and the Shannon index of 1.57 ± 0.67 in grassy savannah at 2.40 ± 0.42 in open forest. Both sites have the same floristic background. The determination of melliferous species around these apiaries is in progress but these results indicated that the diversity of woody species is a major asset for beekeeping because it is likely to provide the floral resources necessary for a large production of honey.

Research paper thumbnail of Persistence and vertical movement of selected pesticides in Michigan potato field

Research paper thumbnail of Topics in pesticide residue analysis

Research paper thumbnail of Impact of the insecticide endosulfan on growth of the African giant snail Achatina achatina (L.)

The impact of the insecticide endosulfan was assessed on the growth of the African giant snails, ... more The impact of the insecticide endosulfan was assessed on the growth of the African giant snails, litterliving animals found in cocoa fields throughout tropical Africa. Two doses of endosulfan, C1, 6.25 a.i g/l and C2, 12.50 a.i g/l were applied twice with one month of interval to the litter of the snails. After quarantine, snails were allowed to feed on this litter and the elongation of their shells as well as their growth was measured every nine days. The results, daily weight gain (g/j) of -0.028 ± 0.004 for C1 and - 0.033 ± 0.007 for C2 showed that snails which received endosulfan in their feed had a very weak growth compared to the control one, which have a daily weight gain of 0.032 ± 0.006. The product seems to disrupt weight regulation. But the insecticide had little influence on the shell elongation. High dose o endosulfan reduced more the weight gain and shell elongation compared to the recommended dose for insects control in cocoa plantation. These results implied that the...

Research paper thumbnail of Perceptions Des Problèmes Environnementaux Dans La Commune De Yamoussoukro en Côte D’Ivoire

European Scientific Journal, Mar 31, 2014

The aim of this study was to investigate the perception of population as to their comprehension o... more The aim of this study was to investigate the perception of population as to their comprehension of environmental management concerns in the city of Yamoussoukro. To do this, a survey completed by interviews and focus group was conducted. The results indicated that the perception of environmental problems was the same regardless of education level. The main environmental preoccupations mentioned by population were: air pollution (57%), poor urbanization (47.6%) , bush fires (56.3%), wastewater discharge (39%), and soil erosion (35%). Forty four percent of the population recognized being misinformed on environmental issues and seems to have more confidence in the state compare to local administration. The results indicated that 78 % of the population claims to make efforts to protect the environment but field observations proved otherwise. To assist in the preservation of the urban environment, 65 % of the population was willing to pay a little more taxes. But they desire by 93%, that the level of awareness of the population regarding environmental issues be raised and that heavy fines for offenders be set. Regarding solid waste, 42.9 % know where they are stored and only 20% know that their taxes are used to pay for collection of this waste. Populations (70, 3 %) say that they eliminate plastic bags by throwing them in the trash but in reality, they discard them by throwing anywhere once used. This study has showed that the policy of environmental planning at the municipality level should focus on integrated management, population implication and education.

Research paper thumbnail of Removal of Heavy Metal Ions (Pb2+, Cu2+) in Aqueous Solutions by Pterygota macrocarpa Sawdust

Journal of Applied Sciences, 2007

Research paper thumbnail of Apport De La Teledetection et Des Sig Pour Le Suivi Spatio- Temporel De L'Occupation Du Sol et La Cartographie De La Sensibilite a L'Erosion Hydrique Dans La Region Montagneuse Du Tonkpi (Ouest De La Cote D'Ivoire)

Research paper thumbnail of A Study of Hospitality Management for Environmental Certification: Case Study Using the Hotel des Parlementaires, Yamoussoukro, Côte d'Ivoire

This work was the review of the potential impacts of the activities, products and services that n... more This work was the review of the potential impacts of the activities, products and services that need to be addressed within the Environmental Management System (EMS). The study was done at the “Hotel des Parlementaires” (HDP), a 4 stars Hotel with a capacity of 300 rooms located in the city of Yamoussoukro. In-depth interview of 3 target groups was done, the management team, Social and Environment Managers, and staff. This was completed by a focus group Interview. Data were gathered by listing the environmental aspects according to the ISO 14001 criteria. Then identified most significant environmental impacts were assessed. The most important potential impacts to the environment found were the discharge from the HDP into the air and water bodies, the contamination of soil, the utilization of raw materials and natural resources, the management of waste, and the environment of the local community. Corrective actions concerning good Housekeeping practice such as the use of ecocard for ...

Research paper thumbnail of Anthelmintic Activity of Nine Varieties of Cajanus cajan (L.) Millsp on Haemonchus contortus from Sheep

Indian Journal of Animal Research

Background: Internal parasitosis is the most important parasitism in small ruminants in tropical ... more Background: Internal parasitosis is the most important parasitism in small ruminants in tropical region. Synthetic anthelmintics are usually used for their control. Due to the emergence of resistance in worm population, the use of alternative methods such as plants bioactive molecules are developed. This study aimed at assessing anthelmintic activity of nine varieties of Cajanus cajan, a taniferous plant cultivated in West Africa. Methods: Leaves of the nine varieties of Cajanus cajan were dried, ground and hydroacetonic extracts were obtained by cold maceration at a concentration of 60 mg/ml. Live adult of Haemonchus contortus were obtained from sheep’s stomach and exposed, in triplicate, to the following solutions: hydroacetonic extracts (60 mg/ml), hydroacetonic extracts (60 mg/ml) associated with polyvinylpyrrolidone (PVP) (50 mg/ml), Levamisole (20 mg/ml) and phosphate buffered saline (PBS) solution. Worm death time was recorded for each treatment. Result: Worms exposed to Leva...

Research paper thumbnail of Problematique De La Certification Forestiere Dans Le Domaine Rural en Cote D’Ivoire

Research paper thumbnail of A screening for benzo(a)pyrène in cocoa beans subjected to different drying methods during on farm processing

Benzo(a)pyrene as well as moisture and physical characteristics of cocoa bean subjected to differ... more Benzo(a)pyrene as well as moisture and physical characteristics of cocoa bean subjected to different mode of drying were evaluated during the second period of cocoa harvesting in Cote d'Ivoire. The moisture content of smoked beans (8.22±0.06) was significantly lower compared to those sun-dried (8.97±0.18). Among the physical characteristics, purple beans were over 4%, and slaty beans 1.57±0.20%. The percentage of moldy beans was significantly higher for sun-dried beans (8.72±0.17%) than for smoked beans (2.13±0.14%). Supplementing sun-drying with smoking during the rainy season helped reduce the level of moldy beans which are favored by their high moisture content. The level of free fatty acid found in beans was in average 1.74% with those subjected to sun drying having significantly (P=0.04) higher levels. These levels were higher than the expected levels (< 1.0%) to meet the acceptable level of 1.75% in cocoa butter extracted from the dry cocoa beans. This high level of fre...

Research paper thumbnail of Comparative analysis of physico-chemical characteristics of honeys produced in the multi-floral arboretum of the national school of agronomy of Yamoussoukro

The development of beekeeping in recent years has resulted in the production of large quantity of... more The development of beekeeping in recent years has resulted in the production of large quantity of honey which storage can affect its quality. This study aims at assessing the physico-chemical characteristics of fresh honey compared to old honey. The contents of total sugars measured were 0.75 ± 0.8 and 0.8 ± 1.36.10-16 for 2011 and 2012 respectively. Water content and ash were 17.23 ± 0.24% and 17.12 ± 0.12 % and 0.8 ± 0.06% and 0.74 ± 0.13% for the same periods. Acidity was estimated to be 4.35±0.2 meq/kg and 4.26±0.13 meq/kg and pH was 4.022±4.122 and 0.01±0.01 for 2011 and 2012 respectively. The amount of insoluble material was 58.8.10-4 ±5.79.10-5 and 99.8.10-4 ±7.09.10-6. For the electrical conductivity, the values were 705.71±5.87 and 597.94±11.74 S/cm. Although all the characteristics of honeys are within the range of recommended values, however, there was a significant difference (p < 0.05) between the values of ash content and insoluble between the two years. Ash content was higher in 2011 than in 2012 while insoluble matters were lower in 2011 than in 2012. These results indicated that apart from biotic factors, the one year storage period had no influence on the quality of honey.

Research paper thumbnail of Impact of the insecticide endosulfan on growth of the African giant snail Achatina achatina (L.)

The impact of the insecticide endosulfan was assessed on the growth of the African giant snails, ... more The impact of the insecticide endosulfan was assessed on the growth of the African giant snails, litterliving animals found in cocoa fields throughout tropical Africa. Two doses of endosulfan, C1, 6.25 a.i g/l and C2, 12.50 a.i g/l were applied twice with one month of interval to the litter of the snails. After quarantine, snails were allowed to feed on this litter and the elongation of their shells as well as their growth was measured every nine days. The results, daily weight gain (g/j) of -0.028 ± 0.004 for C1 and - 0.033 ± 0.007 for C2 showed that snails which received endosulfan in their feed had a very weak growth compared to the control one, which have a daily weight gain of 0.032 ± 0.006. The product seems to disrupt weight regulation. But the insecticide had little influence on the shell elongation. High dose of endosulfan reduced more the weight gain and shell elongation compared to the recommended dose for insects control in cocoa plantation. These results implied that th...

Research paper thumbnail of Correction: Kouassi, J.-L.K., et al. Assessing the Impact of Climate Variability on Wildfires in the N’Zi River Watershed in Central Côte d’Ivoire. Fire 2018, 1, 36

Fire

The authors wish to make the following corrections to this paper [...]

Research paper thumbnail of Assessing the Impact of Climate Variability on Wildfires in the N’Zi River Watershed in Central Côte d’Ivoire

Fire

This study evaluates the impact of climate variability on wildfire regime in the N’Zi River Water... more This study evaluates the impact of climate variability on wildfire regime in the N’Zi River Watershed (NRW) in central Côte d’Ivoire. For that purpose, MODIS active fire and monthly burned area data are used to evaluate wildfire occurrence, impacts and trends. Wildfire data are compared to past trends of different climatic parameters extracted from long-term meteorological records. Generalized additive models and Spearman correlations are used to evaluate the relationships between climate variables and wildfire occurrence. Seasonal Kendall and Sen’s slope methods were used for trend analysis. Results showed that from 2001 to 2016, 19,156 wildfire occurrences are recorded in the NRW, of which 4443 wildfire events are observed in forest, 9536 in pre-forest, and 5177 in Sudanian zones. The burned areas are evaluated at 71,979.7 km2, of which 10,488.41 km2 were registered in forest, 33,211.96 km2 in pre-forest, and 28,279.33 km2 in Sudanian zones. A downward trend is observed in fire re...

Research paper thumbnail of Evaluation of anti termites sold in Cote d'Ivoire against termites damage on woods of selected timbers

International Journal of Agricultural Policy and Research, 2015

Termites are known to cause tremendous losses to wood and wooden structures in buildings, besides... more Termites are known to cause tremendous losses to wood and wooden structures in buildings, besides loss in agriculture and forestry crops. For controlling termites, synthetic termiticides have been used in Cote d'Ivoire. This study aims at evaluating the preservation efficiency of anti-termites sold in the country. Four anti-termite chemicals, two largely used but not homologizes and two homologized were used to treat four timber wood boards. The results indicated that wood boards which are not treated loosed weight compared to the treated ones. Besides that, white woods seemed to be more protected compared to red wood probably due to better absorption of termicides solution by white woods which are softer than the red ones which are hard. The results indicated also that albeit, the type of application of the termicides, there are no difference between the protection bestowed by the chemicals. Above all, all the four termicides found in the market seemed to present the same level of protection against the termites' attacks. The problem was that pyrical and phosgene were homologated whereas the two others did not go any efficacy test or homologation. Some of the termiticides contained banned pesticides and should be removed from the market.

Research paper thumbnail of Effects of sun-dried stylo hay (stylosanthes guianensis cv ciat 184) on rabbits growth and slaughter performances

The effect of sun-dried Stylo hay (Stylosanthes guianensis cv CIAT 184) level in complete pellet ... more The effect of sun-dried Stylo hay (Stylosanthes guianensis cv CIAT 184) level in complete pellet diet was studied on growth and slaughter performances of local hybrid rabbits in Côte d'Ivoire. Four diets containing 0% (control: Sg0), 10% (Sg10), 20% (Sg20) and 30% (Sg30) of Stylo respectively were produced and distributed ad libitum to 4 batches of 12 rabbits from weaning (35 d, mean weight: 613 ± 29 g) to 91 days old. Rabbits receiving the Sg30 diet had the best daily weight gain of 30.4 g / d (+ 16%, P <0.001) and the highest feed intake (+ 7%, P <0.001) compared to the control Sg0. Feed conversion rate was better with the Sg20 and Sg30 diets (-0.45, P <0.001) compared to the control diet. Animals' health was not affected by Stylo incorporation rate in the diet. In addition, the cold carcass weight was better with the Sg20 and Sg30 diets compared to the control (+12%, P <0.001). It was concluded that sun-dried Stylo hay could be incorporated in rabbits complete pelleted feed up to 30%, as source of fibres.

Research paper thumbnail of Data for: "Exploring Wildfire Occurrence: Local Farmers' Perceptions and Adaptation Strategies in Central Côte d'Ivoire, West Africa

This file contains records on 259 surveyed people in central Cote d'Ivoire.

Research paper thumbnail of Exploring Wildfire Occurrence: Local Farmers’ Perceptions and Adaptation Strategies in Central Côte d’Ivoire, West Africa

Journal of Sustainable Forestry

ABSTRACT Wildfires are an important ecological threat in Côte d’Ivoire with the northern half the... more ABSTRACT Wildfires are an important ecological threat in Côte d’Ivoire with the northern half the most affected zone. This study assessed farmers’ perception of wildfire occurrence in the N’Zi River Watershed and compared this perception to remotely sensed fire data trends. To this end, 259 farmers were individually interviewed and 18 farmers were involved in three focus group discussions in three agro-ecological zones. A combination of descriptive statistics and regression analysis was used for data analysis. Results showed that 78.75% of farmers observed the upward trend in the annual wildfire activity identified by remote sensing data during 2001–2016. Most of the respondents identified hunting (65.83%), farm establishment (50%) and firebreaks establishment (46.67%) as main causes of wildfires. The perceived impacts of wildfires included immediate crop burning, crop growth delaying, mid-term post-fire crop destruction, destruction of material goods and loss of human life. Local population developed endogenous strategies to cope with this scourge. Amongst identified coping strategies, firebreaks establishment and maintenance around new clearings and farms and prohibition of fire-hunting during the dry season were highlighted. Therefore, policies and institutions that support local wildfires management initiatives must take advantage of the strong community knowledge and networks to strengthen their effectiveness and sustainability.

Research paper thumbnail of Dara for: "Exploring Wildfire Occurrence: Local Farmers' Perceptions and Adaptation Strategies in Central Côte d'Ivoire, West Africa

This file contains records on 259 surveyed people in central Cote d'Ivoire.

Research paper thumbnail of Diversity of Woody Flora around two Apiaries in the Badenou Protected Forest (Northern Cote d-Ivoire)

This study aimed at analyzing the floristic diversity of the woody vegetation around two experime... more This study aimed at analyzing the floristic diversity of the woody vegetation around two experimental apiaries installed in the Badenou classified forest. A surface survey was carried out and the number of species, genera, families, Shannon, and Piélou indices were determined. The similarity coefficients of Jaccard and Sorensen were calculated to compare the two sites. An average floristic richness was observed with 96 species grouped into 72 genera and 30 families. The Shannon and Piélou indices were found to be 3.76 and 0.82 respectively. Except the Piélou index, all the determined floristic diversity parameters varied significantly according to the type of vegetation. Thus, the species richness varies from 7.50 ± 2.12 in grass savannah to 21.14 ± 7.06 in open forest; the number of families from 5.50 ± 2.12 in grass savannah to 11.57 ± 4.28 in opens forest, and the Shannon index of 1.57 ± 0.67 in grassy savannah at 2.40 ± 0.42 in open forest. Both sites have the same floristic background. The determination of melliferous species around these apiaries is in progress but these results indicated that the diversity of woody species is a major asset for beekeeping because it is likely to provide the floral resources necessary for a large production of honey.

Research paper thumbnail of Persistence and vertical movement of selected pesticides in Michigan potato field

Research paper thumbnail of Topics in pesticide residue analysis

Research paper thumbnail of Impact of the insecticide endosulfan on growth of the African giant snail Achatina achatina (L.)

The impact of the insecticide endosulfan was assessed on the growth of the African giant snails, ... more The impact of the insecticide endosulfan was assessed on the growth of the African giant snails, litterliving animals found in cocoa fields throughout tropical Africa. Two doses of endosulfan, C1, 6.25 a.i g/l and C2, 12.50 a.i g/l were applied twice with one month of interval to the litter of the snails. After quarantine, snails were allowed to feed on this litter and the elongation of their shells as well as their growth was measured every nine days. The results, daily weight gain (g/j) of -0.028 ± 0.004 for C1 and - 0.033 ± 0.007 for C2 showed that snails which received endosulfan in their feed had a very weak growth compared to the control one, which have a daily weight gain of 0.032 ± 0.006. The product seems to disrupt weight regulation. But the insecticide had little influence on the shell elongation. High dose o endosulfan reduced more the weight gain and shell elongation compared to the recommended dose for insects control in cocoa plantation. These results implied that the...

Research paper thumbnail of Perceptions Des Problèmes Environnementaux Dans La Commune De Yamoussoukro en Côte D’Ivoire

European Scientific Journal, Mar 31, 2014

The aim of this study was to investigate the perception of population as to their comprehension o... more The aim of this study was to investigate the perception of population as to their comprehension of environmental management concerns in the city of Yamoussoukro. To do this, a survey completed by interviews and focus group was conducted. The results indicated that the perception of environmental problems was the same regardless of education level. The main environmental preoccupations mentioned by population were: air pollution (57%), poor urbanization (47.6%) , bush fires (56.3%), wastewater discharge (39%), and soil erosion (35%). Forty four percent of the population recognized being misinformed on environmental issues and seems to have more confidence in the state compare to local administration. The results indicated that 78 % of the population claims to make efforts to protect the environment but field observations proved otherwise. To assist in the preservation of the urban environment, 65 % of the population was willing to pay a little more taxes. But they desire by 93%, that the level of awareness of the population regarding environmental issues be raised and that heavy fines for offenders be set. Regarding solid waste, 42.9 % know where they are stored and only 20% know that their taxes are used to pay for collection of this waste. Populations (70, 3 %) say that they eliminate plastic bags by throwing them in the trash but in reality, they discard them by throwing anywhere once used. This study has showed that the policy of environmental planning at the municipality level should focus on integrated management, population implication and education.

Research paper thumbnail of Removal of Heavy Metal Ions (Pb2+, Cu2+) in Aqueous Solutions by Pterygota macrocarpa Sawdust

Journal of Applied Sciences, 2007

Research paper thumbnail of Apport De La Teledetection et Des Sig Pour Le Suivi Spatio- Temporel De L'Occupation Du Sol et La Cartographie De La Sensibilite a L'Erosion Hydrique Dans La Region Montagneuse Du Tonkpi (Ouest De La Cote D'Ivoire)

Research paper thumbnail of A Study of Hospitality Management for Environmental Certification: Case Study Using the Hotel des Parlementaires, Yamoussoukro, Côte d'Ivoire

This work was the review of the potential impacts of the activities, products and services that n... more This work was the review of the potential impacts of the activities, products and services that need to be addressed within the Environmental Management System (EMS). The study was done at the “Hotel des Parlementaires” (HDP), a 4 stars Hotel with a capacity of 300 rooms located in the city of Yamoussoukro. In-depth interview of 3 target groups was done, the management team, Social and Environment Managers, and staff. This was completed by a focus group Interview. Data were gathered by listing the environmental aspects according to the ISO 14001 criteria. Then identified most significant environmental impacts were assessed. The most important potential impacts to the environment found were the discharge from the HDP into the air and water bodies, the contamination of soil, the utilization of raw materials and natural resources, the management of waste, and the environment of the local community. Corrective actions concerning good Housekeeping practice such as the use of ecocard for ...

Research paper thumbnail of Anthelmintic Activity of Nine Varieties of Cajanus cajan (L.) Millsp on Haemonchus contortus from Sheep

Indian Journal of Animal Research

Background: Internal parasitosis is the most important parasitism in small ruminants in tropical ... more Background: Internal parasitosis is the most important parasitism in small ruminants in tropical region. Synthetic anthelmintics are usually used for their control. Due to the emergence of resistance in worm population, the use of alternative methods such as plants bioactive molecules are developed. This study aimed at assessing anthelmintic activity of nine varieties of Cajanus cajan, a taniferous plant cultivated in West Africa. Methods: Leaves of the nine varieties of Cajanus cajan were dried, ground and hydroacetonic extracts were obtained by cold maceration at a concentration of 60 mg/ml. Live adult of Haemonchus contortus were obtained from sheep’s stomach and exposed, in triplicate, to the following solutions: hydroacetonic extracts (60 mg/ml), hydroacetonic extracts (60 mg/ml) associated with polyvinylpyrrolidone (PVP) (50 mg/ml), Levamisole (20 mg/ml) and phosphate buffered saline (PBS) solution. Worm death time was recorded for each treatment. Result: Worms exposed to Leva...

Research paper thumbnail of Problematique De La Certification Forestiere Dans Le Domaine Rural en Cote D’Ivoire

Research paper thumbnail of A screening for benzo(a)pyrène in cocoa beans subjected to different drying methods during on farm processing

Benzo(a)pyrene as well as moisture and physical characteristics of cocoa bean subjected to differ... more Benzo(a)pyrene as well as moisture and physical characteristics of cocoa bean subjected to different mode of drying were evaluated during the second period of cocoa harvesting in Cote d'Ivoire. The moisture content of smoked beans (8.22±0.06) was significantly lower compared to those sun-dried (8.97±0.18). Among the physical characteristics, purple beans were over 4%, and slaty beans 1.57±0.20%. The percentage of moldy beans was significantly higher for sun-dried beans (8.72±0.17%) than for smoked beans (2.13±0.14%). Supplementing sun-drying with smoking during the rainy season helped reduce the level of moldy beans which are favored by their high moisture content. The level of free fatty acid found in beans was in average 1.74% with those subjected to sun drying having significantly (P=0.04) higher levels. These levels were higher than the expected levels (< 1.0%) to meet the acceptable level of 1.75% in cocoa butter extracted from the dry cocoa beans. This high level of fre...

Research paper thumbnail of Comparative analysis of physico-chemical characteristics of honeys produced in the multi-floral arboretum of the national school of agronomy of Yamoussoukro

The development of beekeeping in recent years has resulted in the production of large quantity of... more The development of beekeeping in recent years has resulted in the production of large quantity of honey which storage can affect its quality. This study aims at assessing the physico-chemical characteristics of fresh honey compared to old honey. The contents of total sugars measured were 0.75 ± 0.8 and 0.8 ± 1.36.10-16 for 2011 and 2012 respectively. Water content and ash were 17.23 ± 0.24% and 17.12 ± 0.12 % and 0.8 ± 0.06% and 0.74 ± 0.13% for the same periods. Acidity was estimated to be 4.35±0.2 meq/kg and 4.26±0.13 meq/kg and pH was 4.022±4.122 and 0.01±0.01 for 2011 and 2012 respectively. The amount of insoluble material was 58.8.10-4 ±5.79.10-5 and 99.8.10-4 ±7.09.10-6. For the electrical conductivity, the values were 705.71±5.87 and 597.94±11.74 S/cm. Although all the characteristics of honeys are within the range of recommended values, however, there was a significant difference (p < 0.05) between the values of ash content and insoluble between the two years. Ash content was higher in 2011 than in 2012 while insoluble matters were lower in 2011 than in 2012. These results indicated that apart from biotic factors, the one year storage period had no influence on the quality of honey.

Research paper thumbnail of Impact of the insecticide endosulfan on growth of the African giant snail Achatina achatina (L.)

The impact of the insecticide endosulfan was assessed on the growth of the African giant snails, ... more The impact of the insecticide endosulfan was assessed on the growth of the African giant snails, litterliving animals found in cocoa fields throughout tropical Africa. Two doses of endosulfan, C1, 6.25 a.i g/l and C2, 12.50 a.i g/l were applied twice with one month of interval to the litter of the snails. After quarantine, snails were allowed to feed on this litter and the elongation of their shells as well as their growth was measured every nine days. The results, daily weight gain (g/j) of -0.028 ± 0.004 for C1 and - 0.033 ± 0.007 for C2 showed that snails which received endosulfan in their feed had a very weak growth compared to the control one, which have a daily weight gain of 0.032 ± 0.006. The product seems to disrupt weight regulation. But the insecticide had little influence on the shell elongation. High dose of endosulfan reduced more the weight gain and shell elongation compared to the recommended dose for insects control in cocoa plantation. These results implied that th...

Research paper thumbnail of Correction: Kouassi, J.-L.K., et al. Assessing the Impact of Climate Variability on Wildfires in the N’Zi River Watershed in Central Côte d’Ivoire. Fire 2018, 1, 36

Fire

The authors wish to make the following corrections to this paper [...]

Research paper thumbnail of Assessing the Impact of Climate Variability on Wildfires in the N’Zi River Watershed in Central Côte d’Ivoire

Fire

This study evaluates the impact of climate variability on wildfire regime in the N’Zi River Water... more This study evaluates the impact of climate variability on wildfire regime in the N’Zi River Watershed (NRW) in central Côte d’Ivoire. For that purpose, MODIS active fire and monthly burned area data are used to evaluate wildfire occurrence, impacts and trends. Wildfire data are compared to past trends of different climatic parameters extracted from long-term meteorological records. Generalized additive models and Spearman correlations are used to evaluate the relationships between climate variables and wildfire occurrence. Seasonal Kendall and Sen’s slope methods were used for trend analysis. Results showed that from 2001 to 2016, 19,156 wildfire occurrences are recorded in the NRW, of which 4443 wildfire events are observed in forest, 9536 in pre-forest, and 5177 in Sudanian zones. The burned areas are evaluated at 71,979.7 km2, of which 10,488.41 km2 were registered in forest, 33,211.96 km2 in pre-forest, and 28,279.33 km2 in Sudanian zones. A downward trend is observed in fire re...