Bruno Enagnon Lokonon

Laboratoire de Biomathématiques et d'Estimations Forestières/Université d'Abomey-Calavi

Crop wild relatives are closely related taxa of cultivated crops and are well adapted to a wide range of environmental conditions. With the current global warming and challenges in agriculture and food production, increasing attention must be given to these crop wild species as they can provide genetic resources that may be helpful to address some...

Spatial data modeling can provide significant value to healthcare organizations by improving decision support, resource management and distribution, and clinical outcomes. The aim of this study was to (i) summarize the trends of the modeling techniques used to analyze point-referenced spatial data in epidemiology and (ii) examine if all information...

Ecotourism, as a means of fostering socio-economic level of local communities and contributing to the conservation of forest resources, is important for development in low-income countries. This work investigates the extent to which local people support the continuation of ecotourism during the COVID-19 pandemic and their attitudes towards resource...

Background The Efficacy and effectiveness of vaccination against SARS-CoV-2 have clearly been shown by randomized trials and observational studies. Despite these successes on the individual level, vaccination of the population is essential to relieving hospitals and intensive care units. In this context, understanding the effects of vaccination and...

Introduction Evaluating the potential effects of non-pharmaceutical interventions on COVID-19 dynamics is challenging and controversially discussed in the literature. The reasons are manifold, and some of them are as follows. First, interventions are strongly correlated, making a specific contribution difficult to disentangle; second, time trends (...

Caesalpinia bonduc (L.) Roxb, the most commercialised medicinal species in Southern Benin, is reported to be extinct in the wild due to anthropogenic pressures on its natural habitats. Remaining individuals can only be found in traditional agroforestry systems and home gardens. It is therefore important to understand how spatio-temporal distributio...

Generalized Linear Models (GLMs) provide a unified approach that encompasses most of the linear models. However, they could not been properly used in agricultural sciences. In this review, we (1) examined the correctness related to the application of GLMs to agricultural sciences; and (2) provided a guideline for their suitable use. From a total of...

Edamame has many nutritional and human health benefits and has the potential to overcome malnutrition, a common scourge among West African populations. This study aims to identify sensory preference criteria in order to select edamame varieties that meet the organoleptic needs of potential consumers in Benin. Ten soybean varieties were selected on...

Vegetable soybean (Glycine max L. Merr.) is a highly nutritious crop in Africa whose attributes make it a product of choice to formulate diets with numerous human health benefits. The crop is still novel in West Africa, but is making inroads in many countries of the region. The objective of this study was to evaluate selected vegetable soybean vari...

Edamame , has many nutritional and human health benefits and is likely to overcome malnutrition, a common scourge among West African populations. This study aims to identify sensory preference criteria in order to select edamame varieties that meet the organoleptic needs of potential consumers in Benin. Ten soybean varieties were selected on the ba...

Parkia biglobosa (Jacq.) G. Don, Pterocarpus erinaceus Poir, Milicia excelsa (Welw.) C. C. Berg, Prosopis africana (Guill., Perrot. and Rich.) Taub., Afzelia africana Sm. and Khaya senegalensis (Desv.) A. Juss. are the most highly valued indigenous tree species in the agroforestry systems of the Ouémé catchment area. However, information on the pop...

Caesalpinia bonduc (L.) Roxb is a medicinal plant with high therapeutic values but declared extinct in the wild in Benin. This study explored the potential distribution and climatic suitability of the species under the present-day and future conditions in Benin, based on two Representative Concentration Pathways (RCP4.5 and RCP8.5) at the 2055-time...

Caesalpinia bonduc (L.) Roxb est la plante médicinale la plus commercialisée du sud Bénin. Elle est éteinte à l'état sauvage. Cela est dû à la surexploitation de ses racines qui sont essentiellement utilisées dans le traitement de la prostate et de la faiblesse sexuelle. De plus, la dureté des graines ne favorise pas la régénération spontanée de l'...

Natural resources such as medicinal plants are important in the livelihood systems of many local people around the world. The high anthropogenic pressure on these species lead to their progressive disappearance. This is the case of Caesalpinia bonduc, a medicinal plant widely used in southern Benin but already extinct in the wild. The remaining ind...

The emergence of COVID-19 has prompted an unprecedented scientic publication with the aim of better understanding this new disease. This study assessed the scientic impact and disciplinary priorities of the published papers on the pandemic by comparing epidemiological (EP) and social sciences (SS) research interests. Papers were identied via keywor...

This study uses a Monte Carlo simulation design to assess the performance of Beta and linear mixed models on bounded response variables through comparison of four estimation methods. Four factors affecting the performance of the estimation methods were considered: the number of groups, the number of observations per group, the variance and distribu...

The initial phase dynamics of an epidemic without containment measures is commonly well modelled using exponential growth models. However, in the presence of containment measures, the exponential model becomes less appropriate. Under the implementation of an isolation measure for detected infectives, we propose to model epidemic dynamics by fitting...

The initial phase dynamics of an epidemic without containment measures is commonly well modeled using exponential growth models. However, in the presence of containment measures, the exponential model becomes less appropriate. Under the implementation of an isolation measure for detected infectives, we propose to model epidemic dynamics by fitting...

Generalized linear mixed models are advanced statistical tools for modelling binary outcomes with random and fixed factors. However, parameters estimation is difficult since there is no analytical solution to maximize the likelihood function. This results in the development of several estimation methods. This study assessed through simulation the e...

We empirically compared a Bayesian estimation method (Integrated Nested Laplace Approximation, INLA) to three classical estimation methods (Pe-nalized Quasi-Likelihood, PQL; Hierarchical Likelihood Method, HLM and Adap-tive Gauss-Hermite Quadrature, AGHQ) under six random effect distributions in binary logistic mixed models. Results revealed that A...

The Ouémé catchment abounds an important diversity of woody plant species. However, harvesting pressure on these species seems to lead to threats of their sustainability. Despite this fact, few published studies concerning their conservation have been undertaken. In this regard, our study focused on (1) assessment of impact of socio-demographic fac...

The use of GLMMs is widespread in ecology last decades. Contrary to linear mixed models for which the likelihood function can be expressed in closed form, GLMMs likelihood function is analytically intractable. As a result, various approximation methods have been introduced with different degrees of accuracy. The aim of this study is to assess the f...

Mean equal variance assumption in Poisson model is constantly violated in real life count data leading to overdispersion. This study assessed empirically, the performance of Poisson Model and its extensions under varying overdispersion and sample size using R software. Increased values of overdispersion (. =2, 4, 8, 12, 20) have been introduced in...

The use of GLMMs is widespread in ecology since last decades. However, GLMMs likelihood function is analytically intractable. As a result, various approximation methods have been introduced with different degrees of accuracy. This study assesses the frequency of usage of different GLMMs estimation methods in ecology and makes a comprehensive discus...

Due to its location and multiple uses, Nokoué Lake, is subject to multiple attacks impairing water quality. The present work aims at assessing the water quality index (WQI) on this surface water, by monitoring twenty sampling locations for a period of rainy and dry season in 2016. For calculating the WQI, seven parameters, namely, pH, dissolved oxy...

The study described in this paper has consisted of simulating the real future behaviour of the Ouémé river basin's water flow by 2040. The approach of the Rural Engineering model, with two variables, at a monthly time step named GR2M has been adopted owing to its robustness. This model is an indispensable tool for studying the evolution of water re...

Ouémé catchment experiences increasing degradation of its natural resources due to anthropogenic pressure. Consequently, most of the agroforestry species as well as the cultural and Indigenous knowledge related to them are facing a very high risk of extinction. The present research aimed to assess the biodiversity of the useful woody species in thi...

Ouémé catchment experiences increasing degradation of its natural resources due to anthropogenic pressure. Consequently, most of the agroforestry species as well as the cultural and Indigenous knowledge related to them are facing a very high risk of extinction. The present research aimed to assess the biodiversity of the useful woody species in thi...

Ouémé catchment experiences increasing degradation of its natural resources due to anthropogenic pressure. Consequently, most of the agroforestry species as well as the cultural and Indigenous knowledge related to them are facing a very high risk of extinction. The present research aimed to assess the biodiversity of the useful woody species in thi...

The velvet tamarind (Dialium guineense Willd) is one of the key species for domestication in Sub-Saharan Africa. In order to help the sustainable management and conservation of this species, its structural characteristics and ethnobotanical traits were studied in the 4 vegetation types (typical dense forest, degraded dense forest, young fallow and...