Romain Lucas Glele Kakaï

Romain Lucas Glele Kakaï
University of Abomey-Calavi | UAC · Laboratoire de Biomathématiques et d'Estimations Forestières

Biomathematics and Forest modeling
Current activities: AI application in agriculture; COVID-19 modelling in Africa; Spatial point process modelling.

About

347
Publications
239,129
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
3,868
Citations
Introduction
Romain Lucas Glele Kakaï is Professor of Biostatistics and forest estimations at the Faculty of Agronomic Sciences (FSA in French), University of Abomey-Calavi. His current research focusses on linear and non-linear mixed effects models, infectious disease modeling and mangroves ecosystems ecology and restauration.
Additional affiliations
September 2007 - March 2017
University of Abomey-Calavi
Position
  • Laboratoire de Biomathematiques et d'Estimations Forestières
October 2004 - present
University of Abomey-Calavi
Position
  • Biometry and Forestry
Description
  • Full Professor in Applied Statistics and Forestry: University of Abomey-Calavi. Invited Professor in Applied statistics (University of Kara, TOGO, University of Masuku, GABON, KNUST, GHANA, Felix Hounphoet Boigni University, COTE D'IVOIRE.
July 1999 - present
Education
May 2005
Gembloux Agricultural University
Field of study
  • Biometry
September 2002
Gembloux Agricultural University
Field of study
  • Biometry
March 2000
Faculty of Agronomic Sciences, University of Abomey-Calavi
Field of study
  • Forestry

Publications

Publications (347)
Article
The novel coronavirus (COVID-19) pandemic is causing devastating demographic, social, and economic damage globally. Understanding current patterns of the pandemic spread and forecasting its long-term trajectory is essential in guiding policies aimed at curtailing the pandemic. This is particularly important in regions with weak economies and fragil...
Preprint
Full-text available
The COVID-19 pandemic is currently causing several damages to the world, especially in the public health sector. Due to identifiability problems in parameters' estimation of complex compartmental models, this study considered a simple deterministic susceptible-infectious-recovered (SIR)-type model to characterize and predict the future course of th...
Article
Full-text available
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 fittin...
Article
Full-text available
Since the emergence of the novel 2019 coronavirus pandemic in December 2019 (COVID-19), numerous modellers have used diverse techniques to assess the dynamics of transmission of the disease, predict its future course and determine the impact of different control measures. In this study, we conducted a global systematic literature review to summariz...
Article
Full-text available
The widely used logistic model for epidemic case reporting data may be either restrictive or unrealistic in presence of containment measures when implemented after an epidemic outbreak. For flexibility in epidemic case reporting data modeling, we combined an exponential growth curve for the early epidemic phase with a flexible growth curve to accou...
Article
Nitrogen plays an important role in plant nutrition and sustainable agriculture. The objective of this study was to assess the distribution pattern of nitrogen in the arable land of Benin. A Bayesian Maximum Entropy (BME) method was used for spatial mapping. Hard data consisted of a total of 305 sampled locations of nitrogen collected at 20 cm dept...
Article
Full-text available
Background: Despite a global decrease in malaria burden worldwide, malaria remains a major public health concern, especially in Benin children, the most vulnerable group. A better understanding of malaria's spatial and age-dependent characteristics can help provide durable disease control and elimination. This study aimed to analyze the spatial di...
Article
Full-text available
Literature on conservation science has documented the increasing use of the co-management approach to effectively conserve natural resources. Although some studies found the co-management approach as highly effective, others also reported some uncertainties associated with the use of this conservation approach. Using the mono transboundary biospher...
Preprint
Bayesian Maximum Entropy (BME) is increasingly used in predicting and mapping spatio-temporal data. However, studies that have fully evaluated its robustness empirically are rare. Therefore, this research examined empirically the effect of skewness, sample size and spatial dependency level using simulated data. We considered symmetric data, data po...
Article
Mangroves are coastal wetland ecosystems of tropical and subtropical regions. Water and substrate salinities are important drivers of their development and trajectories. Therefore, understanding how main mangrove species respond to salinity gradient when transplanted in natural environment is essential for their restoration. This study assessed the...
Article
Full-text available
Background In Benin, access to water, sanitation and hygiene (WASH) remains an issue. This study aims to provide an overview of household access to basic WASH services based on nationally representative data. Method Secondary analyses were run using the ‘HOUSEHOLD’ dataset of the fifth Demographic and Health Survey 2017–2018. The dependent variabl...
Article
Full-text available
Characterization of local goat breeds is an important step for the development of its breeding. This characterization cannot be done without knowing the size and the spatial distribution of the existing breeds. Thus, this work was carried out to study the spatial distribution of goat breeds bred in Benin. To achieve this, 498 breeders spread across...
Article
Full-text available
Key message Slant incisure tapping yielded the highest resin production. Resin production was proportional to tree size, tapping intensity, and frequency. Resin production was higher during hot dry season than cold dry season. Abstract Boswellia dalzielii Hutch. is an African frankincense tree species with high medicinal and economic values mostly...
Article
A common strategy to counteract global biodiversity loss is sustainable management of protected areas. However, as protection of nature sometimes conflicts with human livelihoods and involves stakeholders with different interests, conservation conflict is globally on the rise. These conflicts can hamper sustainable development, social equity and ef...
Article
Abstract Boswellia dalzielii Hutch. is a valuable West African native frankincense tree species. The stem bark has a high traditional medicinal value throughout its range. The resin has great economic potential even though it is little exploited in West Africa, making it one of the neglected and underutilized species. Current anthropogenic pressur...
Article
Full-text available
This study examines biological and agronomic responses of Loxodera ledermannii to the compost application. A complete random block of 3 treatments (0 t/ha, 5 t/ha and 10 t/ha of organic fertilizer in 3 replicates was designed. Each plot (1.5 m x 2 m) is seeded 24 tussocks acclimated in the Botanical Garden of the UAC from 2011 to 2013. Leaf morphom...
Article
Full-text available
Plant species providing Non‐Timber Forest Products (NTFP) are economically important across Africa. How this heterogeneous and understudied resource will respond to ongoing climate change remains understudied. Here, we modelled the impact of end‐of‐the‐century climate change on the distribution of 40 NTFP plant species distributed across tropical A...
Article
Full-text available
Balanites aegyptiaca, a key agroforestry species, is being overexploited in the Sahel due to increasing market demand for its derived products. The present study aims to model the potential current distribution of B. aegyptiaca and to assess the potential impact of the future climate (at 2055 and 2085 time horizons) on the species distribution in C...
Article
Full-text available
The fishery industry plays a paramount role in poverty alleviation, food security and job creation in Sub-Saharan Africa. Scientific attempts to characterize the sector are however limited. This study used primary and secondary data from 2014 to 2018 to characterize fishing fleets and the diversity of fish species landed in Benin. Primary data were...
Article
Full-text available
Species distribution models (SDMs) have become tools of great importance in ecology, as advanced knowledge of suitable species habitat is required for the process of global biodiversity conservation. Presence-only data are the more abundant and readily available data widely used in SDM applications. These data should be treated as a thinned Poisson...
Article
Balanites aegyptiaca (L.) Delile and Ricinodendron heudelotii (Bail.) Pierre are multipurpose wild oil plants (WOP) with high socio-economic and ethnoecological importance. Both WOP remained neglected and underutilized at the national or regional level. In this study, their geographic distribution and structural characteristics were assessed in Ben...
Article
Full-text available
Mangroves are one of the most threatened ecosystems globally. Likewise, they benefit many restoration efforts. However, these efforts have often disregarded potential effects of climate change on selected species and foreseen changes in physico-chemical conditions of mangrove ecosystems. This study aimed to model current and future climatic and phy...
Article
Full-text available
Background The growing interest for more natural products in food and health industries has led to increasing research on traditional knowledge related to plants. While theoretical knowledge (TK) on the uses of a species informs on the wide spectrum of potential uses of that species, actual uses (AU) highlight their potential being actually used. D...
Article
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...
Article
Full-text available
Gnansounou, S.C.; Abdul-Kareem, R.; Castro Gbedomon, R.; Valre Salako, K.; Apollinaire Mensah, G., and Gll Kaka, R., 2022. Impact of Covid-19 on coastal fishing and stakeholders' response strategies in Benin, West Africa. Journal of Coastal Research, 38(2), 279288. Coconut Creek (Florida), ISSN 0749-0208. Coastal fishing is of immense importance in...
Article
Full-text available
Mangroves are important coastal ecosystems, which deliver diverse and crucial services to humans. This study explored the diversity of mangrove ecosystem services, their associated threats as well as their contribution to livelihoods and wellbeing of coastal communities in the Mono Transboundary Biosphere Reserve (MTBR) located between Benin and To...
Article
The present study is aimed at assessing the impact of different tillage practices and mulch input rates on soil erosion and soil properties in Central Benin. The experiment was carried out at two sites (Dan and Za-zounmè) using a randomized complete block design. The effect of three tillage practices: contour ridging (CR); slope ridging (SR) and no...
Article
Wild oil plants (WOP) are species used for food, cosmetics, nutraceutical, and medicine. In Benin, their importance is still poorly documented. This study investigated the diversity of WOPs and identified priority species for valorization in Benin. Literature synthesis was used to gather data on a list of WOP species. This was completed by ethnobot...
Article
Full-text available
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...
Preprint
Mangroves are coastal wetland ecosystems of tropical and subtropical regions. Their development and trajectories are mainly driven by water and substrate salinities. Therefore, understanding how main mangrove species respond to salinity gradient when transplanted in natural environment is essential for their restoration. This study assessed the sur...
Article
Full-text available
Ricinodendron heudelotii is a wild oil tree species native to sub-Saharan Africa. It is also found in Benin. Its oil is rich in the essential fatty acids (Omega 3, 6), fat-soluble vitamins (A, D, E and K) and trace elements, essential for human health. Currently, few people know about this oil, likely explaining its almost total absence in rural ma...
Article
The rapid growth of the human population in West Africa makes malnutrition a pressing issue. This paper highlights the predicted nutritional issues in West Africa by 2030. Data were extracted from the FAOSTAT 2019 database and national nutritional reports. Countries were clustered based on the prevalence of different forms of malnutrition. Trends i...
Article
Demographic pressure and climate change have heavily affected soil fertility. Proper soil management requires the understanding of the spatial variation of soil properties. In this study, Bayesian maximum Entropy (BME) was used to explore the variation of soil pH and soil organic matter (SOM) at Adingningon (Benin) using 106 soil samples. The predi...
Article
Full-text available
RESUME Les systèmes agroforestiers contribuent comme les forêts à la conservation physique et chimique du sol, à la régulation thermique et à la conservation de la biodiversité. Cette étude visait à caractériser la communauté des espèces ligneuses alimentaires dans quatre systèmes agroforestiers périphériques au noyau central de la Forêt Classée de...
Article
Mangroves are precious ecosystems that provide vital socio-economic, environ- mental and cultural benefits to humanity. However, they are declining alarmingly due to human activities and natural hazards. Assessment of their spatio-temporal dynamics is essential to monitor these ecosystems and guide their management to ensure their sustainability. W...
Preprint
Full-text available
A better understanding of rainfall variability and trends is vital for agricultural production systems. This study evaluates the spatio-temporal variability and trends in annual, seasonal and daily rainfall in Benin. Daily rainfall data for the 1970-2016 period measured at three weather stations (Savè, Malanville, and Tanguiéta) were obtained from...
Article
Full-text available
Balanites aegyptiaca (L.) Delile and Ricinodendron heudelotii (Bail.) Pierre are socioeconomically important species in sub-Saharan Africa. This study was conducted to assess the seed germinability and seedling growth of those species based on several treatments and to define proper conservation and domestication strategies in Benin. The seeds were...
Article
Full-text available
Background and aims – Understanding the spatial patterns and associations of tree species with their conspecific and heterospecific neighbours is critical for sustainable management of their stands. This study assessed the intra- and interspecific spatial structure of six life stages in Afzelia africana, a keystone multipurpose and endangered tree...
Preprint
Full-text available
The conservation management literature has recently documented the increasing use of co-management approach to effectively conserve natural resources. Although most research qualify the co-management as highly effective, some authors also reported a number of uncertainties associated with the use of this conservation approach. Using the Mono Transb...
Article
Full-text available
Maize plays an important role in agricultural production systems in all agro-ecological zones of Benin. Despite its importance, its production faces many constraints including soil fertility. One of the ecological technologies aimed at improving agricultural production is the use of soil microorganisms including arbuscular mycorrhizal fungi (AMF)....
Technical Report
Full-text available
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'...
Article
Full-text available
Boswellia dalzielii Hutch., an African frankincense tree, is a socio-economically important aromatic and medicinal tree. It is currently threatened by uncontrolled exploitation, and therefore requires action to ensure its sustainable management. This study assessed the population structure and regeneration of its natural stands across three land us...
Article
In a context of sustainable agriculture, the use of arbuscular mycorrhizal fungi (AMF) represents a potential tool for environmentally friendly agricultural management in the face of the challenges of climate change and the reduction in the costs and disadvantages of mineral fertilization. This study therefore aims to evaluate the performance of fi...
Article
Full-text available
Agricultural mechanization level and tractor users groups vary from one country to another. This study aims to assess the status of the use of pre-harvest equipment and tractor users in Benin Republic. A total of 203 respondents were surveyed over the country using a questionaire. The sample size was determined using the normal approximation of bin...
Preprint
The normal and Poisson distribution assumptions in the normal-Poisson mixed effects regression model are often too restrictive for many real count data. Several works have independently relaxed the Poisson conditional distribution assumption for counts or the normal distribution assumption for random effects. This work couples some recent advances...
Article
African healthcare system depends upon indigenous medicinal plants, harvested wild and traded for significant income generation. Mondia whitei, one of these plants, is threatened by over‐exploitation, climate change and unsustainable land use management. Detailed knowledge is lacking regarding the species' conservation—driving forces and preservati...
Article
Full-text available
The use of biotechnological approaches to increase soil fertility and productivity allows to obtain sustainable agriculture with lesser use of chemical fertilizers. The present study aimed to determine whether the inoculation of Bacillus panthothenicus, Bacillus thuringiensis, Pseudomonas putida, Pseudomonas syringae, or Serratia marces-cens combin...
Article
A general strategy for setting up supervised methods of multiblock data analysis is outlined. This yields a unified framework where some already known methods are retreived and novel extensions are introduced. All the methods of analysis are based on the determination of latent variables associated with the various blocks of variables. They are der...
Preprint
Full-text available
Balanites aegyptiaca (L.) Delile and Ricinodendron heudelotii (Bail.) Pierre are socioeconomically important but endemic species to sub-Saharan Africa. This study was conducted to assess the germination capacity of their seeds and seedling growth according to seed provenance, seed mass and pre-treatment techniques as a contribution to the developme...
Article
Full-text available
In West Africa, African locust bean (P. biglobosa (Jacq.) Benth.) and Shea (V. paradoxa (Gaertn. F) are among the most important multipurpose plant species commonly found in traditional agroforestry systems. Most of research on these species are dominated by patterns and properties of their food uses, and additionally cosmetics for the shea. Yet, t...
Article
Full-text available
Understanding the impacts of wood harvesting intensity on the diversity and structure of ecosystems such as mangroves is essential for defining actions for their sustainable management. We compared tree taxonomic diversity, structural diversity and dominance patterns, density, growth characteristics, size class distribution-SCD and stand stability...
Technical Report
Full-text available
Le Laboratoire de Biomathématiques et d’Estimations Forestières (LABEF; http://www.labef-uac.org) est une structure de formation et de recherche de l’Université d’Abomey-Calavi. Ces travaux sont axés sur le développement et l’analyse de l’applicabilité d’outils mathématiques aux sciences de la vie pour la compréhension des interactions entre les pr...
Preprint
Full-text available
Neural networks models are mostly represented by oriented graphs where only the components, constitutive elements of the graph, are transcribed into mathematical expression. Indeed, accurate knowledge of the full expression of the model is required in certain situations such as selecting among several reference models, the one that best fits the av...
Preprint
Full-text available
Missing observations constitute one of the most important issues in data analysis in applied research studies. The magnitude and their structure impact parameters estimation in the modeling with important consequences for decision-making. This study aims to evaluate the efficiency of imputation methods combined with the backpropagation algorithm in...
Article
en Salinity is a major driver of emergence and early growth of mangrove propagules. The magnitude of salinity effects may vary across mangrove ecotypes. Using a randomised complete block design in a semi‐controlled experiment, this study assessed the effect of salinity (low: 3–5, moderate: 15–17 and high: 34–36 Practical Salinity Unit) on the emerg...
Preprint
Full-text available
Most existing flexible count regression models allow only approximate inference. Balanced discretization is a simple method to produce a mean-parametrizable flexible count distribution starting from a continuous probability distribution. This makes easy the definition of flexible count regression models allowing exact inference under various types...
Preprint
Full-text available
Species distribution models have become tools of great importance in ecology since the advanced knowledge of suitable habitat of species is needed in the process of the world's biodiversity conservation. Models that use presence-only data are of great interests and are widely used in ecology due to their easy access. However, these models do not es...