Climate change is predicted to affect species distribution worldwide. Most of the methods used evaluate such impact so far assume that respond environmental gradients in a uniform way along their range. Because populations occupying different niches may differ response climate due local adaptation, accounting for intraspecific variation models (SDMs) yield more reliable predictions widely distributed species. Pterocarpus erinaceus Poir highly valued but endangered tree species, which occurs...

Atacora Chain of Mountains (ACM) is the Benin part a range mountains lying from to Ghana through Togo. It provides goods and services people dominated by rural communities with heavy reliance on natural resources. The ACM may be threatened increasing resource needs possible shift in people's livelihood priorities brought about challenges opportunities ushered modernization. This study sought understand local perception derived socio-demographic factors (age, gender, level urbanization place...

Abstract Background Ecosystems provide humanity with goods and services known as ecosystem services. The value of these represents a basis for political decision-making. To be sure that decisions are made on valid basis, policymakers require an understanding the biophysical processes involved . This study was carried out around two forest reserves (Alibori-Supérieur Ouénou-Bénou) in Northern Benin. It aimed to highlight knowledge surrounding communities their perceptions about importance...

This paper presents a consolidated balance-sheet on the botanical and historical evidence for role of cultivated African rice species (Oryza glaberrima Steud) in West Central Africa as well its geographical distribution. Because Oryza has survived without help interference from human, it developed adaptive protective mechanisms resisting major biotic abiotic stresses. is also very plastic with two ecotypes: floating non floating, natural hybridization admixture wild parents Asian sativa....

Le Nord du Bénin abrite 92,5 % de la couverture forestière nationale, principalement constituée des réserves faune et forêts classées, destinées à conservation biodiversité. Ces zones domaine classé, pourtant dotées pour plupart plans d’aménagement d’un système surveillance qui devraient limiter dégradation milieu, sont soumises un fort taux régression forestière, dû aux pressions anthropiques. Cette étude vise analyser vulnérabilité formations forestières dans les domaines classé non trois...

Les bases techniques pour une gestion durable des forets claires du Nord-Benin ont ete etudiees en determinant les caracteristiques structurales peuplements, le diametre minimal d'exploitabilite et la rotation principales essences commercialisables. Quatre types de identifies, respectivement a Isoberlinia doka, Daniellia oliveri, Anogeissus leiocarpus Pterocarpus erinaceus. ces montrent que richesse specifique ligneux varie 15 106 especes. La densite arbres (pour un hauteur poitrine, dbh ≥...

The strength of competitive and facilitative interactions in plant communities is expected to change along resource gradients. Contrasting theoretical models predict that with increasing abiotic stress, effects are higher, lower, or similar than those found under more productive conditions. While these predictions have been tested stressful environments such as arid alpine ecosystems, they hardly for African woodlands. We experimentally assessed the tree seedling facilitation by nurse trees...

Understanding the role of protected areas in conserving biodiversity is a central goal conservation biology. Anthropogenic activities around and inside these and, particular, roads can alter spatiotemporal dynamics biological diversity areas. However, our understanding how presence position affect human attitude, subsequent agricultural practices limited. In this study, we tested effects proximity traditional agroforestry parklands to main used by park rangers for surveillance on abundance...

Background: In the Democratic Republic of Congo (DR Congo), Oldeania alpina (K. Schum.) Stapleton provides multiple goods and services to rural populations is keystone species mountain forest ecosystems, most which are in a very advanced state degradation. The present study was carried out Lubero cool highlands region, North-East DR Congo. It aims highlight knowledge local on uses O. as well their perceptions spatio-temporal dynamics this high-altitude bamboo species. Methods: Ethnobotanical...

Understanding how multiple disturbances affect species population structure is crucial for designing a better conservation strategy of threatened species. In this paper, we assessed the disturbance patterns and evaluated their effects on Afzelia africana, in two different bioclimatic zones Republic Benin. The main studied area included branch pruning debarking. Individuals medium size (20–40 cm) were mostly pruned debarked. percentages debarking similar at level across (t = −0.04, p 0.96; t...

Understanding the utilization of plant is fundamental for efficient conservation species. The present study aimed at assessing quatitative ethnobotany Lophira lanceolata Tiegh. ex Keay (Ochnaceae) in Benin. A number 1261 persons were randomly selected and interviewed using semi-structured questionnaires. Principal Components Analysis was performed to relate utilizations organs ethnic groups. diversity (ID) equitability (IE) values globally low (< 0.50) indicated that local knowledge on L....

Lophira lanceolata is an oleaginous tree species whose fruit used for vegetable oil production in Benin. The present study highlighted the and characterization of morphological traits fruits seeds this species. A total 196 mature trees were randomly sampled Borgou-Nord, Borgou-Sud Atacora Chain phytodistricts. Descriptors characterized globally at level phytodistricts surveyed. Pearson correlation test stands out relationships between different descriptors. effect on was analyzed using a...

Vitex doniana Sweet est une espèce à usages multiples d’une grande importance socio-économique et commune en Afrique tropicale. Malgré sa forte utilisation mi- lieu rural, elle encore présente l’état sauvage. Il existe peu de données sur domestication. La propagation cet arbre par bouturage segments racine consti- tue alternative difficile régénéra- tion sexuée. L’objectif notre travail était d’évaluer deux des facteurs clés (substrat d’enracinement, diamètre boutures) qui influencent...

Dans un contexte de récurrence la déforestation, présente étude a eu pour objectif d'évaluer l'impact du Projet Restauration des Ressources Forestières Bassila (PRRF) sur dynamique couvert végétal, une période trente ans (1986-2017) dans commune au nord Bénin. La question recherche posée est : mise en œuvre PRRF a-t-elle favorisé conservation forêts ? télédétection et les Systèmes d'informations géographiques ont servi à évaluer végétal pendant projet (1986-2003) après (2003-2017). Entre...

La présente étude examine l'influence des pressions anthropiques sur les caractéristiques structurales populations de Pentadesma butyracea Sabine (Clusiaceae), une espèce ligneuse vulnérable et à but multiple. Au total 116 placeaux 500 m² ont été installés façon aléatoire, dont 68 dans la zone soudanienne 48 soudano-guinéenne, pour réaliser mesures dendrométriques inventaires floristiques. Les P. catégorisées suivant auxquelles elles sont sujettes l'aide d'une Analyse factorielle...