Publications (71)
ARTICLE
Resilience strategies of West African pastoralists in response to scarce forage resources
Karim Ouédraogo; Alhassane Zaré; Gabin Korbéogo; Oumarou Ouédraogo; Anja Linstädter
Finding sufficient natural fodder resources to feed livestock has become a challenge for herders in the Sahel zone
of Burkina Faso. Despite the existence of pastoral reserves, the issue of fodder shortage remains unsolved. This
article highlights the changes in behaviour and the evolution of pastoral practices caused by the scarcity of forag(...)
Pastoralism, Forage values, Burkina Faso, Ecological changes
ARTICLE
Effect of livestock manure on soil microbial and nutrient dynamics in zaï cropping systems of the Sahel.
Traoré Salifou, Ouédraogo Pauline, Bayen Philippe, Bationo Babou André, Lee Nathan, Nicola Lorenz Nathan, Dick Richard P
The zaï cropping system that involves precision manure placement in small excavated soil pits is designed to restore the productivity of encrusted and degraded soils of the Sahel. However, there is little information on the effectiveness of zaï cropping to improve soil quality, particularly as to how it relates to manure sources. Therefore, ou(...)
enzyme activity, microbial communities, plant available nutrients, agropastoral pratices
ARTICLE
Analysis of Non-Equilibrium Phase Change in Transfers at Low Water Content by Considering the Film Flow
Kébré, M. B., Ouédraogo, F., Naon, B., Cherblanc, F. & Zougmoré, F.
In this study, we analyze the effect of non-equilibrium phase change on transfer at low water content in a sandy soil by considering the contribution of film flow in the motion of liquid water. Indeed, most of the non-equilibrium study methods use for hydraulic conductivity, the van Genuchten-Mualem (VGM) capillary model which does not conside(...)
Sandy Soil Low Water Content Phase Change Non-Equilibrium Film Flow Hydraulic Conductivity
ARTICLE
Water Resources in the Sahel and Adaptation of Agriculture to Climate Change: Burkina Faso
Babacar Lèye, Cheick Oumar Zouré, Roland Yonaba and Harouna Karambiri
In West Africa, a shift in climate conditions since the 1970s is evidenced by a decrease in average annual rainfall and an increase in temperatures between 1931–1960 and 1968–1990. The latter period was followed by a rainfall recovery since the late 1990s in the western Sahel. The prolonged rainfall deficits of the twentieth century have, howe(...)
Agriculture, Burkina faso, climate change
ARTICLE
Spatial and transient modelling of land use/land cover (LULC) dynamics in a Sahelian landscape under semi-arid climate in northern Burkina Faso
Roland Yonaba, Mahamadou Koïta, Lawani Adjadi Mounirou, Tazen Fowé, Pierre Queloz, Angelbert Chabi Biaou, Dial Niang, Cheick Oumar Zouré, Harouna Karambiri, Hamma Yacouba,
Sahelian landscapes have gone through rapid changes over the past decades under high pressure from an ever-growing population, climate hazards and land degradation. Understanding drivers of change and forecasting LULC dynamics in time and space are critical for sustainable land management. This research aimed at analyzing LULC patterns and for(...)
LULC dynamics, Land change modelling, Multilayer perception, Remote sensing, Sahel
ARTICLE
Water Dynamics under Drip Irrigation to Proper Manage Water Use in Arid Zone
Ouédraogo, S. , Bawindsom Kébré, M. and Zougmoré, F.
The water resources reduction due to climate changes and also population increase, have contributed to increasing the constraint on water disponibility and accessibility. In the agricultural field, we need moderate soil and water resources management. This work aims to simulate water dynamics in soil under drip irrigation system in arid region(...)
Drip Irrigation, Water Dynamics, Hydrus (2D/3D)
ARTICLE
How Is Forest Landscape Restoration Being Implemented in Burkina Faso? Overview of Ongoing Initiatives
Barbara Vinceti * , Michel Valette , Ali Lardia Bougma and Arturo Turillazzi
Land degradation affects a significant portion of the Earth’s ice-free land area and several countries have embraced the challenge of restoring large parts of their degraded lands. Success in these efforts depends on various factors, including the amount of resources invested, the technical capacity available and the degree of involvement of s(...)
land degradation; forest landscape restoration; arid lands; tree planting
ARTICLE
A dynamic land use/land cover input helps in picturing the Sahelian paradox: Assessing variability and attribution of changes in surface runoff in a Sahelian watershed.
Roland Yonaba, Angelbert Chabi Biaou, Mahamadou Koïta, Fowé Tazen, Lawani Adjadi Mounirou, Cheick Oumar Zouré, Pierre Queloz, Harouna Karambiri, Hamma Yacouba
In Sahelian landscapes, land use/land cover (LULC) dynamics and climate variability are already known to affect the water cycle. In its current practice however, hydrological modelling does not account for LULC changes. This issue pertains to rapidly evolving watersheds and might result in critical inaccuracies in the simulated processes. In t(...)
Surface runoff, SWAT model, Burkina Faso, Sahelian paradox, Dynamic LULC input, Hydrological modelling
ARTICLE
Développement durable : Étude biblique et exégétique sur la gestion de l’environnement
DAO Jean
Conscients qu’il ne peut avoir de développement sans protection de l’environnement, les Nations Unis et plusieurs organisations de développement ne cessent d’organiser des conférences, des séminaires, et des colloques autour de l’environnement. L’Eglise a trainé les pas avant de s’intéresser aux problèmes environnementaux. Au Burkina Faso par(...)
Bible, environnement, protection, gestion, univers
ARTICLE
Multi-scale analysis of runoff from a statistical perspective in a small Sahelian catchment under semiarid climate.
Lawani Adjadi Mounirou, Cheick Oumar Zouré, Roland Yonaba, Jean- Emmanuel Paturel, Gil Mahé, Dial Niang, Hamma Yacouba, Harouna Karambiri
In Sahelian and semi-arid regions, understanding the runoff processes and at different spatial scales is critical to assess sources of variation and further improve distributed modelling. In this study, through a multi-scale analysis, runoff measurements on different soil surface features and at different scales of observation were carried ove(...)
Rainfall intensity, Runoff potential, Sahel, Soil spatial heterogeneity, Surface feature
ARTICLE
Solid Waste Management in Africa: Governance Failure or Development Opportunity?
Linda Godfrey, Mohamed Tawfic Ahmed, Kidane Giday Gebremedhin, Jamidu H.Y. Katima, Suzan Oelofse, Oladele Osibanjo, Ulf Henning Richter, Arsène H. Yonli
Waste management is a social, economic, and environmental problem facing all African countries. If the 2030 Agenda for sustainable development is to be achieved, sustainable waste management approaches must be an environmental and public health imperative deserving political priority. Current reasons for the poor management of waste in Africa,(...)
Mots clés non renseignés
ARTICLE
Radiation dose assessment of soil from Ijero Ekiti, Nigeria
M. R. Usikalu, P. P. Maleka, N. B. Ndlovu, S. Zongo, J. A. Achuka and T. J. Abodunrin,
The activity concentration of 238U, 232Th and 40K in the soils of mining and living areas of Ijero Ekiti were determined using hyper pure germanium gamma ray spectrometer. The mean concentrations of 238U, 232Th and 40K were found to be 128.05 Bqkg−1, 24.8 Bqkg−1 and 455.05 Bqkg−1, respectively, for mining areas, while it was found to be 42.02(...)
mining, soil, dose assessment, excess lifetime cancer, riskIjero Ekiti
ARTICLE
Enrichment of ferrous iron in the bottom water of Lake Nyos
Minoru Kusakabe, Rosine E. Tiodjio, Bruce Christenson, Kazuto Saiki, Takeshi Ohba, Muga Yaguchi
Cet article s’est penché sur le comportement des métaux ferreux dans les profondeurs du lac Nyos. En effet, le constat de l’enrichissement en Fe2+ de l’eau du fond du lac a été fait après le début du dégazage artificiel. Dans la couche inférieure du lac (205,5-209,5 m), Fe2+ et HCO3- sont les principales espèces dissoutes et leurs concentratio(...)
Lake Nyos, Sub-lacustrine fluid reservoir, CO2-Water-rock interaction, Fe2+ enrichment, Microbial reduction of Fe3+
ARTICLE
Modelling the water balance on farming practices at plot scale: Case study of Tougou watershed in Northern Burkina Faso.
Cheick Zouré, Pierre Queloz, Mahamadou Koïta, Dial Niang, Tazen Fowé, Roland Yonaba, David Consuegra, Hamma Yacouba, Harouna Karambiri
In the Sahel region, farmers have adopted various farming practices to improve agricultural yields in order to offset an increasingly variable climate regime and the extension of degraded land. This study analyses the functional behaviour of such three selected water-harvesting techniques (stone rows, zaï and half-moon) as compared to the trad(...)
Water harvesting techniques, Sahel, SCS-CN model, Water balance, Rainfall variability
ARTICLE
Predicting attenuation of solar radiation (UV-B, UV-A and PAR) in waste stabilization ponds under Sahelian climatic conditions
MAIGA Ynoussa , WETHE Joseph, OUATTARA Aboubakar Sidiki, TRAORE S. Alfred
Because of its importance in pathogen removal and algal productivity in waste stabilization ponds, sunlight penetration was measured in microcosms and in situ under Sahelian climatic conditions. The different wavelengths were detected using a submersible radiometer equipped with three sensors: UV-B (311 nm), UV-A (369 nm) and photosyntheticall(...)
Pathogen, Sahelian climate, Sunlight attenuation, Waste stabilization pond