Kouami Kokou

Kouami Kokou
Université de Lomé · Forest Research Laboratory

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210
Publications
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Publications

Publications (210)
Article
Full-text available
Abstract In the Sudano-Sahelian zones of West Africa, climate controls the distribution and composition of spontaneous vegetation. The study was conducted in Niger and Burkina Faso. It aims to (1) analyze the ecological and floristic characteristics in a heterogeneous environment of 8 forests: (2) determine the woody groups of plant formations in P...
Article
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The high pressures on Pterocarpus erinaceus Poir. severely affect its natural stands in West Africa. The measures taken to reverse this trend are still inefficient due to plantlets production constraints. This study aims to understand the importance of growing substrates on seedlings growth in nursery. Composite soil samples were collected at 20 cm...
Article
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Background and Aims: The sylviculture of Pterocarpus erinaceus is still in its infancy due to lack of information on its biology. The aim of this study is to investigate its mycorrhizal status in order to better address its sylviculture. Place and Duration of Study: The study was performed on the field from May 2019 to December 2020 and data were a...
Article
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Cette étude basée sur l'analyse des données satellitaires multidates est réalisée en vue d'évaluer la dynamique du couvert forestier dans la préfecture de Wawa fortement marquée par des immigrations de populations à la recherche de terres agricoles. L'objectif de cette étude est d'analyser la dynamique de l'occupation du sol dans la préfecture de W...
Article
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In the northern part of Togo, several sacred groves are preserved and managed traditionally by local communities and are repositories of the biodiversity of surrounding areas. The present study aims at evaluating the impact of these traditional management practices on the biodiversity and structural characteristics of the sacred groves. Survey was...
Article
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Le réchauffement climatique est un phénomène d’envergure mondiale qui se répercute sur le système climatique. Une des conséquences du réchauffement climatique est l'extension de la période de sécheresse, favorisant ainsi l’augmentation des fréquences du phénomène des feux de végétation. Les feux incontrôlés perturbent l’écologie et la fonctionnalit...
Article
Les espèces ligneuses du nord du Togo sont sujettes à de diverses utilisations pour satisfaire des besoins multiples des populations et leur gestion implique plusieurs acteurs. L’objectif de l’étude est d’apprécier les connaissances endogènes de ces espèces ligneuses, les préférences et les similarités. L’approche méthodologique est basée sur des e...
Article
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En vue d’étudier la qualité des miels consommés dans la zone guinéenne du Togo pour une bonne gestion de leur production et de leur commercialisation, des analyses physico-chimiques ont été réalisées sur 44 échantillons de miel dont 21 achetés chez des apiculteurs eux-mêmes et 23 chez des commerçants à des points de vente dans la zone d’étudequi so...
Article
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Croton hirtus L'Hér., une adventice nouvellement citée pour la flore togolaise a été signalée dans trois zones écologiques (EZ III, EZ IV, et EZ V) du pays lors des explorations botaniques entre 2017 et 2021. Une description et des illustrations sont proposées pour une identification aisée de l'espèce. ABSTRACT Synopsis of Croton hirtus L'Hér. a ne...
Article
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Aboveground biomass changes estimated at the landscape level are necessary for estimating carbon pools in forest and provide baseline data for future studies. The objective of this study is to combine national forest inventory and remote sensing data to: (1) generate aboveground biomass maps for time-series between 1991 and 2018 and (2) analyze cha...
Article
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Pterocarpus erinaceus Poir. is a woody species with high economic value, endemic to West Africa. Anthropogenic pressures, seminal production reduction, the rapid loss of seeds' germinal capacity, and especially the seedlings' difficulty to develop, endanger the regeneration and the survival rate of stands. This study aims to deepen scientific knowl...
Article
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To study the genetic diversity and structure of the forest species Pterocarpus erinaceus Poir., seventeen polymorphic nuclear microsatellite markers were isolated and characterized, using next-generation sequencing. Three hundred and sixty-five (365) individuals were analyzed within fifteen (15) West African populations. The number of alleles for t...
Article
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The Mono Transboundary Biosphere Reserve (RBTM) has significant resources but faces many threats that lead to habitat fragmentation and reduction of ecosystem services. This study, based on satellite image analysis and processing, was carried out to establish the baseline of land cover and land use status and to analyze their dynamics over the peri...
Article
en Despite the increasing interest in the role of African savannah and woodlands on the global carbon cycle, little is known about the above‐ground biomass (AGB) and the factors affecting it in these ecosystems in West Africa. We estimated AGB in different vegetation types of a forest–savannah mosaic in Togo, and we investigated the relationship be...
Article
Full-text available
Pterocarpus erinaceus is a native tree species of the Guineo-Sudanian and Sudano-Sahelian zones where natural stands are under constant pressure and heavily exploited for timber, animal feeding and others uses. A part from the overexploitation, climate change could also become a serious threat to the species natural distribution. For that purposes,...
Article
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Contexte et objectifs – La conservation durable de la biodiversité requiert une bonne compréhension des causes de son déclin. Mis à part les activités humaines, les changements climatiques se révèlent comme la principale menace qui pèse sur la biodiversité au 21ème siècle. Notre étude vise à déterminer l’impact du changement climatique sur les Ptér...
Article
Pterocarpus erinaceus (Poir) is currently the most exploited and threatened spontaneous tree species in the Guinean-Sudanian and Sudano-Sahelian zones in West Africa. This work analyzed the density and color parameters of P. erinaceus wood in the phytogeographic zones (Sudanian, Guinean and Sahelian) in three countries in West Africa (Togo, Burkina...
Article
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Pterocarpus erinaceus Poir. (Fabaceae), also called Vène or West African rosewood, is a multipurpose endemic forest species of Sahelo-Sudanian and Sudano-Guinean savannas and forests of West Africa. In Togo, the species is overexploited, which dangerously hinders its survival. The need and emergency of restoring declining stands, using seeds, or pr...
Article
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La flore du Togo éditée depuis 1984 n’a suivi à ce jour aucune mise à jour mais depuis lors, de nouvelles investigations et récoltes lui ont été ajoutées. L’actualisation de cette flore passe par la mise à jour nomenclaturale et taxonomique des spécimens d’herbier du Togo. L’objectif de cette étude est de mettre à jour la liste des Asteraceae du To...
Article
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In sub-Saharan Africa, the management of buffer zones around protected areas do not often take into serious account the needs of resource exploitation by the local populations or the conservation needs of these areas. We described the ecological characteristics and management issues affecting the buffer zone around the Fazao-Malfakassa National Par...
Article
The conservation and sustainable management of biodiversity requires an understanding of the biotic and abiotic factors that condition the presence and survival of organisms in natural habitats. The global distribution and ecological hypersensitivity of pteridophytes have made them ideal candidates for studying the impact of biotic and abiotic fact...
Article
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In tropics, species diversity in agricultural systems is often assessed without distinction between native and exotic species. However, the conservation value of an ecosystem depends on its richness in native species. This study was conducted to determine the conservation value of agricultural systems in Togo megahotspot, one of the species-rich si...
Article
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The floristic inventory carried out in the southernmost part of the Monts Togo over the last two years (2016-2018) has made it possible to identify two new species for the Togolese flora. Microcoelia macrorhynchia (Schltr.) Summerh. and Tridactyle filifolia (Schltr.) Schltr., thus increasing diversity to four for the genus Tridactyle and two for th...
Article
Lake Ahémé (part of Ramsar 1017) is one of the most productive brackish water ecosystems and is the second-largest lake in Benin in terms of area, after Lake Nokoué. However, this lake has received little attention for hydrobiological studies, although it is subject to heavy pollution. Therefore, the present study aims to contribute to the monitori...
Chapter
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Pterocarpus erinaceus is an endemic and threatened plant species in arid and semiarid zones of West Africa and is highly exploited for timber, animal feeding, and various medicinal uses. The species is currently native to the Guinean forest-savannah mosaic ecoregion and reported from Senegal to Cameroon. The values of the main characteristics of th...
Article
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Togo’s semi-deciduous forest zone has a great diversity of plants and ecosystems that constitute a natural heritage that should be well studied for sustainable and efficient management. Thus, the main objective of this study is to determine the environmental factors responsible for the vertical stratification of Orchidaceae epiphytes. This study in...
Conference Paper
Climate change is one of the major environmental challenges of 21st century. One of the consequences of climate change is coastal erosion. The Togolese barrier beach is also affected by the phenomenon of coastal erosion. Due to its geographic location between the Atlantic Ocean and the Lake Togo in the south of the Mono transboundary biosphere rese...
Article
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Propagation of Lawsonia inermis L. (henna), dye, medicinal and horticultural species was investigated in Togo. The main mode of multiplication of the multi-purposes species is sowing, but this propagation faces problems, particularly low germination rates, which hardly reach 20%.Henna cuttings is possible, but this technique commonly used for low-c...
Article
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p> The cocoa trees nutrient requirements coverage, especially in nitrogen (N), remains essential for a better growth of the seedlings. The objective of this study was to determine the effects of the moderate nitrogen doses on the agronomic performance of the nursery cocoa seedlings in Togo’s forest zone. Trials were conducted in a complete randomiz...
Article
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Guinea has very little ecological data available regarding its sacred forests. This study shows the important conservation role of these forests in a local context of strong human impacts. We present four representative case studies from the Sudano-Guinean zone in Upper Guinea. Our phytoecological inventories recorded a total of 431 species, 312 ge...
Article
This study analyses forest reference level in terms of loss, gain and transitions among forest, cocoa agroforestry, cassava, maize, settlement and others in the Kloto district (Togo) for REDD+ and sustainable forest and agriculture. The pixel-based classification was adopted and combined with the extended change matrix quantity and intensity analys...
Cover Page
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The West African forest-savanna mosaic, an important habitat for biodiversity and humans, is severely degraded, fragmented and modified by human activities. However, few studies have quantified the land cover changes observed over time and/or analysed the drivers of change. This study focused on Fazao-Malfakassa National Park, the largest in Togo,...
Article
Full-text available
The West African forest-savanna mosaic, an important habitat for biodiversity and humans, is severely degraded, fragmented and modified by human activities. However, few studies have quantified the land cover changes observed over time and/or analysed the drivers of change. This study focused on Fazao-Malfakassa National Park, the largest in Togo,...
Data
Location of all the studies we reviewed. (TIF)
Data
Drivers of change as identified by the different groups of respondents. M refers to male and F to female farmers. (TIF)
Data
Classification accuracy for Landsat 7 ETM (December 2001). (DOCX)
Data
Classification accuracy for Sentinel-2 (December 2015). (DOCX)
Data
Scientific, common and local name of all the species (plants and animals) used in main text. Local names are in Tem, Bassar and Kabyè languages. (DOCX)
Data
Main characteristics of the different vegetation types studied, including dominant species, canopy height and percentage of canopy cover (All photos were taken by Atsri K. Honam). (DOCX)
Data
Classification accuracy for Landsat 5 TM (January 1987). (DOCX)
Article
Human‐modified systems come as innovative ones necessary to be more understood to attain biodiversity conservation goals. This study aimed to assess the effect of human disturbance on the population structure of Pterocarpus erinaceus in different land use types (Highly protected area, Moderately protected area and Non‐protected area) in Sudanian sa...
Article
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This article describes the herbarium database of the University of Lomé. The database provides a good representation of the current knowledge of the flora of Togo. The herbarium of University of Lomé, known also as Herbarium togoense is the national herbarium and is registered in Index Herbariorum with the abbreviation TOGO. It contains 15,000 spec...
Article
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Description du sujet. Au Nord-Togo, particulièrement en milieu rural, les populations utilisent des biens d’espèces ligneuses et des services écosystémiques pour satisfaire des besoins multiples. Dans un environnement marqué par une déforestation accrue, se développe une pression anthropique croissante avec une incidence sur la vulnérabilité et la...