
Jonas Koala- Researcher at Institut de l'environnement et de Recherches Agricoles (INERA), Station de recherche de Saria, Burkina Faso,
Jonas Koala
- Researcher at Institut de l'environnement et de Recherches Agricoles (INERA), Station de recherche de Saria, Burkina Faso,
About
39
Publications
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216
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Introduction
Skills and Expertise
Current institution
Institut de l'environnement et de Recherches Agricoles (INERA), Station de recherche de Saria, Burkina Faso,
Current position
- Researcher
Additional affiliations
January 2016 - November 2016

Independent Researcher
Position
- Researcher
Publications
Publications (39)
Poor soil fertility is a problem for agriculture in Burkina Faso. Litterfall is an important way for bio-elements to return to the soil. Therefore, the dynamics and quantity of litterfall were studied as part of a collaborative research project that aims to better manage agroforestry parkland. Five 0.25 m2 litter traps were placed under 5 trees of...
Background: In the Sahel region of sub-Saharan Africa, the reduction of natural rangelands due to an unbridled advance of the agricultural front has a negative impact on livestock production, which is mainly based on the rangeland ecosystems. Thus, there is a need for improvements to the livestock feeding system. One possible solution is the adopti...
We observed the growth of saplings of four common tree species (Sesbania sesban, Leucaena leucocephala, Piliostigma reticulatum, and Parkia biglobosa) in Burkina Faso after planting on degraded land with Plinthosols. The saplings were raised by two methods as treatments. The soil briquette (SB) method (or "HOIKU Block" in Japanese), which has been...
L’élevage burkinabè est fortement dépendant des parcours naturels qui sont aujourd’hui fortement dégradés dans beaucoup de localités. Cette situation exige d’explorer des palliatifs afin de combler le déficit alimentaire du cheptel. A cet effet, la méthode d’intensification de la production fourragère se présente comme une alternative. Pour ce fair...
Cette étude avait pour but d’évaluer la dynamique saisonnière des pâturages herbacés dans la zone sahélienne du Burkina Faso. Pour estimer la biomasse de la strate herbacée, deux opérations de coupe de la biomasse espacées d’un intervalle de quinze jours ont été effectuées chaque mois dans dix parcelles permanentes de 100 m2 ainsi que des relevés p...
Senegalia macrostachya, ex-Acacia macrostachya is a multiple-use species providing many benefits to populations in arid and semi-arid regions. Despite its importance, limited research has been undertaken on its silviculture, growth, and productivity in plantations or in the wild. In this paper, we widely deployed the Generalized Additive Models for...
Cette étude porte sur l'évaluation de la vulnérabilité des espèces ligneuses à grande valeur socio-économique pour une meilleure gestion de la flore ligneuse du 20ème site Ramsar au Burkina Faso. Les informations ont été recueillies auprès de 240 personnes riveraines du site. La méthode d’échantillonnage des enquêtés était basée sur leur appartenan...
Tenure issues in natural resources management limit the adoption of agroforestry systems and effective land use scale. This paper describes the species composition, structure, and diversity of woody species on agroforestry parklands at Tiogo under two types of land tenure. Ecological and structural characteristics of vegetation patches were compute...
Forest resources play an important role in the livelihoods of rural people for centuries. The various forms of exploitation of forest resources are often sources of threat to their survival and establishment. Studying the structural dynamics of food woody species has the advantage to contribute effectively to their conservation. To do this, in four...
Dans le Sahel, l’amenuisement des parcours naturels en raison de l’avancée effrénée du front agricole impacte négativement sur la production animale, principalement basée sur ces écosystèmes. Ainsi, l’amélioration de l'alimentation du cheptel nécessite l’adoption de pratiques et de techniques de production fourragère. Cette
étude examine les facteu...
Senegalia macrostachya is a wild, perennial, and promising legume that can help alleviate
food insecurity in sub-Saharan Africa’s droughtprone regions. However, it has been for a long time overlooked, underutilized, and scarcely studied. This study shed light on its ecological niche, genetic variation in natural populations, and seeds’ harvest matu...
L’étude s’intéresse aux perceptions de la dégradation des ressources naturelles et examine les facteurs qui influencent la volonté des populations locales à intégrer les bonnes pratiques qui atténuent l’utilisation des feux, de la pâture et des pesticides. Nous avons analysé les stratégies locales qui pourraient restaurer les ressources naturelles...
Cette étude porte sur l'évaluation de la vulnérabilité des espèces ligneuses à grande valeur socio-économique pour une meilleure gestion de la flore ligneuse du 20 ème site Ramsar au Burkina Faso. Les informations ont été recueillies auprès de 240 personnes riveraines du 20 ème site Ramsar du Burkina Faso. Les résultats indiquent que les communauté...
Savanna Zone of Burkina Faso is characterized by the increasing population growth due to human migration from the north and central regions of the country for cultivating agricultural land and pastures. This situation induced land-use changes, and social reorganization has led to new approaches to natural resources management. Tenure issues in natu...
Background: Riparian vegetation is important for the protection of water resources, to avoid erosion and sedimentation of riverbeds. Monitoring the impacts of disturbance on the dynamics of riparian vegetation can help to develop evidence-based forest management guidelines.
Aims: We evaluated the woody composition and structure along a disturbance...
Dans la présente étude, nous avons appréhendé les perceptions paysannes sur les pratiques agroforestières (RNA et Plantation) en zone agroécologique nord-soudanienne du Burkina Faso ainsi que les facteurs qui affectent son adoption. Des interviews semi-structurées ont été réalisées auprès de 128 chefs de ménages dans les régions du centre-sud
et du...
Forest resource plays a significant role in supporting the livelihoods of many people mainly
the riparian populations to this resource. The dependence of local populations on forest
resource coupled with climate variability could therefore be a threat to the survival of these
resources. Thus, it is important to know the status of the available wood...
The problem of the effectiveness of the established pre-treatments of seeds of local tree species is posed more and more often, with acuity. It appears necessary that studies are led to explore new methods of pre-treatment, or to update the old instructions applied, for a better success and at lower cost, of the production of seedlings. The present...
Dans la présente étude, nous avons appréhendé les perceptions paysannes sur les pratiques agroforestières en zone agroécologique nord-soudanienne du Burkina Faso ainsi que les facteurs qui affectent son adoption. Des interviews semi-structurées ont été réalisées auprès de 128 chefs de ménages dans les régions du centre-sud et du centre-ouest du Bur...
Fire and overgrazing reduce aboveground biomass, leading to land degradation and potential impacts on soil organic carbon (SOC) and total nitrogen (TN) dynamics. However, empirical data are lacking on how prescribed burning and livestock exclusion impact SOC in the long-term. Here we analyse the effects of 19 years of prescribed annual burning and...
Objectives The aim of this study was to determine soil organic carbon stocks and root biomass carbon vertical distribution in an agroforestry parkland of Prosopis africana (Guill., And Rich.) Taub in Burkina Faso. Methodology and Results: The study was carried out in Saria on factorial design with 3 replicates. Root and soil sampling was done by ex...
Carbon emissions from land use change are insufficiently addressed in developing countries. While estimation of carbon stocks within different land management and cropping systems are an important element in design of productive land use systems that protect or sequester carbon. The aim of this study was firstly to assess SOC and N stocks and secon...
Farmed parklands of the Central Plateau, Burkina Faso, integrate native woody vegetation with managed cropland. However, sapling survival in the parklands is increasingly threatened. This study characterized woody vegetation abundance along a 2.7 km long transect in the Doulou Basin, Boulkiemdé Province, Central West Region, to assess changes in ve...
L'objectif de cette étude est d'améliorer la gestion participative et durable des forêts classées en zones semi-arides. Elle est réalisée dans les forêts classées de Tissé et de Oualou dans la commune rurale de Tchériba, Burkina Faso. La collecte des données a été basée sur des enquêtes ethnobotaniques auprès de 236 chefs de ménages. L'analyse des...
The adoption of agroforestry at large scale appears to be an efficient solution for the conservation of biodiversity and the well-being of local communities, especially in developing countries. The present study analyzes the factors that influence farmers 'decisions to adopt agroforestry technology promoted by the Ecosystem Based Adaptation (EBA) a...
The trees in agroforestry plots create spatial heterogeneity of high interest for adaptation, mitigation, and the provision of ecosystem services. But to what distance, exactly, from the tree? We tested a novel approach, based upon geostatistics and Unmanned Aerial Vehicle (UAV) sensing, to infer the distance at which a single agroforestry tree aff...
Objectif : Depuis 2005, le protocole de Kyoto est entré en vigueur et les projets de boisement et de reboisement dans le cadre du Mécanisme de Développement Propre (MDP) sont devenus éligibles. Il est donc indispensable d’établir des équations allométriques pour estimer les biomasses des différentes espèces.
Méthodologie et résultats : L’étude a co...
Les populations rurales dépendent fortement des ressources forestières pour la satisfaction de leurs besoins quotidiens. Disposer de connaissances sur l'utilisation des espèces forestières ouvre la voie à leur conservation. Dans cette étude, nous avons déterminé les espèces les plus diversement utilisées sur la base de connaissances locales dans tr...
Echinochloa stagnina (Retz) P. Beauv. est une plante aquatique vivace par son rhizome et annuelle lorsqu'elle perd toute vitalité après une longue période de sécheresse. Cette étude avait pour objectif d'évaluer les connais-sances endogènes sur l'importance écosystémique de l'espèce dans le corridor forestier de la Boucle du Mouhoun. Pour mieux com...
This study aims at identifying the effect of P. reticulatum on the vegetation regeneration dynamic in Sudanian fallows of Burkina Faso. Two fallows of about twenty years old have been considered. The point quadrat method was used for herbaceous inventory. Aboveground biomass has been estimated. Moreover, effect of P. reticulatum on the regeneration...
Accurate estimates of both above-ground biomass (AGB) and below-ground biomass (BGB) are essential for estimating carbon
Structural and functional dynamics of savanna-woodland ecosystems are mainly shaped by fire, grazing and wood removal which effects depends both on their intensities. The long-term effects of those disturbances on key soil parameters are still largely unknown. We studied the cumulative effect of 20 years of early fire, grazing and selective tree cu...
In northern Sudan zone of Burkina Faso, soils are increasingly vulnerable to degradation from erosion. Leaf biomass of P. reticulatum, is commonly used by farmers. This study aims (i) to quantify the impact of the leaf biomass of P. reticulatum on the growth and yield of sorghum, (ii) to determine an input composition for better performance and eas...