Analyse des propriétés hydrodynamiques des aquifères fissurés de la région de San-Pedro (Sud-Ouest de la Côte d’Ivoire)

De-Lasme, O. Z.; Lasm, Théophile; Oga, Marie-Solange; Youan-Ta, M.; Baka, Derving; Ettien, F. B.; Kouakou, Sylvain Landry; Onetie, Oscar Z; Yao, T.

doi:10.3989/egeol.40672.159

Cited by 8 publications

(7 citation statements)

References 27 publications

(57 reference statements)

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“…Annual rainfall generally ranges from 1,000 mm to 1,400 mm, with average temperatures fluctuating between 28°C and 32°C. Soils are ferralitic and shallow on granite or gneiss (Lasm et al, 2012).…”

Section: Study Areamentioning

confidence: 99%

Effect of two biocontrols on the accumulation of phenolic compounds and leaf pigments in sorghum [<i>Sorghum bicolor</i> (L.) Moench] leaves in northern Côte d'Ivoire

N'cho,

N'da,

Yeo

et al. 2024

Int. J. Bio. Chem. Sci

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The aim of this study was to find an alternative to chemical control by improving sorghum's natural defense system. The effect of two biocontrols, Vacciplant and Calliet, on phenolic compound and leaf pigment levels was evaluated. Vacciplant was prepared at concentrations of 0.675; 0.9; 1.125; 1.35 and 1.575 mg/mL, while Calliet was prepared at concentrations of 4 ; 8 ; 12 ; 16 and 20 mg/mL. After preparation, the biocontrol solutions were sprayed onto sorghum leaves 60 days old. Incubation times of 24, 48, 72 and 96 hours were observed after spraying. The sorghum leaves were then harvested and freeze-dried for quantification of total phenols and leaf pigments. Results showed that Vacciplant at a concentration of 1.125 mg/mL after 72 hours of incubation allowed to have the highest contents of total phenols (76.63 mg/g MF), while Calliet at concentration of 4.00 mg/mL after 24 hours of incubation allowed to have the highest contents of total phenols (67.28 mg/g MF). With regard to photosynthetic activity, the results also showed an increase in leaf pigment content following the application of biocontrols. The use of biocontrols could therefore be an interesting alternative to chemical control in sorghum.

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Section: Study Areamentioning

confidence: 99%

Effect of two biocontrols on the accumulation of phenolic compounds and leaf pigments in sorghum [<i>Sorghum bicolor</i> (L.) Moench] leaves in northern Côte d'Ivoire

N'cho,

N'da,

Yeo

et al. 2024

Int. J. Bio. Chem. Sci

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“…3). The basic concepts and protocol for calculating this quantity are presented in the work of [1], [10]- [12]. Transmissivity is determined by the following (2):…”

Section: A Determination Of Hydrodynamic Parametersmentioning

confidence: 99%

Analysis of the Hydrodynamic Properties of the Fissure Aquifers of the Black Volta Catchment in Ivory Coast

Marc,

Armel,

Bertrand

et al. 2023

EJGEO

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The present study aims to analyze the productivity of aquifers in the Ivorian part of the Black Volta basin. It proposed to characterize the intrinsic hydrodynamic parameters of the productivity and to know the influence of these on the productivity of the drillings. The hydraulic parameters of the catchment structures and the pumping test sheets were used to determine the hydrodynamic properties through a methodological approach integrating Cooper Jacob's empirical formulas and automated calculations using the Pumping Interpretation Assistance Tool (OUAIP). A standardized principal component analysis (ACPN) was used to analyze the correlation of the different parameters. The results obtained range over several orders of magnitude. The values of the specific flow oscillate between 0. 01 and 4.87m²/h while the transmissivity varies between 1.25E-07 and 7.34E-03 m².s-1. As for the critical flow, it is between 0.869 and 26.6 m3/h. These values indicate that the aquifers generally have low specific flow rates, but fairly good transmissivity. The Normalized Principal Component Analysis (ACPN) allowed to highlight the different productivity factors of the aquifers in the region: water level variation, and hydraulic role of fractures. It also showed the influence of the depth of the drilling on productivity. These results contribute to the knowledge of the structure and hydrodynamic functioning of the aquifers of the basin basement. They show the structural links between hydrodynamics and aquifer productivity.

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“…In this study, we will focus our analysis on three localities in the southwest of Côte d'Ivoire (Sanpedro, Tabou and Taï). During the last years, numerous research studies [10,11] have used different methods to better understand of recent manifestation of climate change. Our contribution is therefore to characterize the recent manifestation of climate change and assess effective rainfall and groundwater recharge.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Climate Change and Aquifer Recharge in Three Localities in the South-West of Côte d’Ivoire

Abdelaziz,

Lasme,

Kpan

et al. 2023

IJECC

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Located in the southwestern part of Côte d'Ivoire, the study area's economic activity is rainfall-dependent agriculture and facing climate change impact on water resources. This study aims to improve the resilience of water users based on a better understanding of the recent manifestation of climate change. Specifically, it is to determine the episodes of rainfall variability and estimate the effective rainfall and groundwater recharge. The hydro-climatic database for this study covers more or less the period from 1977 to 2021. The characterization of rainfall variability was highlighted by the calculation of rainfall indices, while effective rainfall and recharge values were determined using the ESPERE (Estimation of Effective Rainfall and Recharge) software according to different mathematical methods. Using the non-parametric Pettitt test was possible to detect years with significant rainfall breaks. Thus, there was an alternation of deficit and surplus periods at different scales in the three localities. However, a break in the rainfall pattern occurred in 1989 in San Pedro, whereas this event took place a year later, in 1990, in the other two localities. The effective rainfall and annual recharge closely followed the rainfall evolution in the three localities at different scales. This acquired knowledge of hydrological and hydrogeological rainfall, dynamics can be used to better educate the resilience and climate change adaptation habits of the populations in the southwest region of Côte d'Ivoire.

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Analyse des propriétés hydrodynamiques des aquifères fissurés de la région de San-Pedro (Sud-Ouest de la Côte d’Ivoire)

Cited by 8 publications

References 27 publications

Effect of two biocontrols on the accumulation of phenolic compounds and leaf pigments in sorghum [<i>Sorghum bicolor</i> (L.) Moench] leaves in northern Côte d'Ivoire

Effect of two biocontrols on the accumulation of phenolic compounds and leaf pigments in sorghum [<i>Sorghum bicolor</i> (L.) Moench] leaves in northern Côte d'Ivoire

Analysis of the Hydrodynamic Properties of the Fissure Aquifers of the Black Volta Catchment in Ivory Coast

Characterization of Climate Change and Aquifer Recharge in Three Localities in the South-West of Côte d’Ivoire

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