A5002516836- Ecology and Vegetation Dynamics Studies
- Forest ecology and management
- Coral and Marine Ecosystems Studies
- African Botany and Ecology Studies
- Wildlife Ecology and Conservation
- Wildlife-Road Interactions and Conservation
- Forest Management and Policy
- Conservation, Biodiversity, and Resource Management
- Avian ecology and behavior
- Agriculture and Rural Development Research
- Marine and coastal plant biology
- Plant Water Relations and Carbon Dynamics
- Species Distribution and Climate Change
- Photovoltaic Systems and Sustainability
- Marine and fisheries research
- Environmental and Social Impact Assessments
- Plant and animal studies
- Social Acceptance of Renewable Energy
- Bayesian Methods and Mixture Models
- Pharmaceutical and Antibiotic Environmental Impacts
- Aquatic Ecosystems and Phytoplankton Dynamics
- Tree-ring climate responses
- Water-Energy-Food Nexus Studies
- Soil and Land Suitability Analysis
- Animal Vocal Communication and Behavior
Structure et Instabilité des Génomes
2022-2024
Centre National de la Recherche Scientifique
2016-2024
Institut de Recherche pour le Développement
2024
Direction Générale Déléguée aux Ressources
2021-2023
Muséum national d'Histoire naturelle
2020-2022
PatriNat
2020-2021
Canadian Heritage
2020-2021
Gembloux Agro-Bio Tech
2014-2020
University of Liège
2014-2020
Ecological Society of America
2018
Large areas of African moist forests are being logged in the context supposedly sustainable management plans. It remains however controversial whether harvesting a few trees per hectare can be maintained long term while preserving other forest services as well. We used unique 24 year silvicultural experiment, encompassing 10 4 ha plots established Central Republic, to assess effect disturbance linked logging (two nine ha⁻¹ greater than or equal 80 cm DBH) and thinning (11-41 50 on structure...
Summary Understanding how drought affects annual tree growth in tropical forests is of crucial importance to predict their response climate change. Previous studies, mainly led the N eotropics and S outheast A sia, have yielded contradictory results which might be explained by differences species studied, development stages considered, or other environmental factors than water availability. Here, we described responses functional groups a C entral frican semi‐deciduous moist forest. Species...
Accurate, unbiased and concise synthesis of available evidence following clear methodology transparent reporting is necessary to support effective environmental policy management decisions. Without this, less reliable and/or objective reviews could inform decision making, leading ineffective, resource wasteful interventions with potential for unintended consequences. We evaluated the reliability over 1000 syntheses (reviews overviews) published between 2018 2020 that provide on impacts human...
In natural forests of Central Africa, several studies indicate a dramatic decrease in commercial trees, including species concern for conservation. Enrichment planting with these will favor both the long-term recovery their populations and biodiversity conservation logged forests. this study, we analyzed survival growth 23 plantations. Fourteen 0.2–1.1 ha mixed plantations consisting single-species 15 × m blocks were studied 5 years logging concession southeastern Cameroon. The plantation...
Summary Understanding the environmental determinants of forests deciduousness i.e. proportion deciduous trees in a forest stand, is great importance when predicting impact ongoing global climate change on forests. In this study, we examine (i) how varies relation to rainfall and geology, (ii) whether influence geology could be related differences soil fertility water content between geological substrates. The study was conducted mixed moist semi‐deciduous northern part Congo basin. We...
The development of cities and transport infrastructure produces a large volume mineral waste (e.g. excavated earth material). At the same time, are increasingly trying to develop green infrastructures, given ecosystem services they provide people, but this comes with considerable economic environmental costs associated transfer fertile soil from rural areas cities. In circular economy approach, reuse build is substantial opportunity reduce both management development. Soils constructed these...
Abstract Although the importance of large trees regarding biodiversity and carbon stock in old‐growth forests is undeniable, their annual contribution to biomass production uptake remains poorly studied at stand level. To clarify role production, we used data tree growth, mortality, recruitment monitored during 20 yr 10 4‐ha plots a species‐rich tropical forest (Central African Republic). Using random block design, three different silvicultural treatments, control, logged, logged + thinned,...
Abstract Size at reproduction is a key aspect of species life history that relatively understudied for long‐lived tropical trees. Here, we quantified reproductive diameter 31 major timber across 11 sites in Cameroon, Congo, and Central African Republic. Specifically, examined whether (1) between‐species variability correlated with other traits; (2) varies within‐species among sites; (3) status crown exposure; (4) the minimum cutting limits ( MCDL ) imposed by national forest regulations...
In central Africa, most of the timber species require high light at seedling stage for survival and growth. Forest managers face a regeneration shortage these light-demanding species. To achieve long-term sustainability, there is need enrichment methods combining low cost performance. The aim this study was to assess performance Pericopsis elata seedlings in enriched logging gaps Cameroon. Over five years; size each monitored 27 that were either left without maintenance or cleared. Gaps...
To develop silvicultural guidelines for high-value timber species of Central African moist forests, we assessed the performance pioneer Milicia excelsa (iroko, Moraceae), and non-pioneer light demander Pericopsis elata (assamela, Fabaceae) in logging gaps plantations highly degraded areas south-eastern Cameroon. The survival size each seedling was regularly monitored experiments. Differences allometry were tested between plantations. two significantly different from concurred with...
Abstract Background To phase out fossil fuels and reach a carbon–neutral future, solar energy notably photovoltaic (PV) installations are being rapidly scaled up. Unlike other types of renewable energies such as wind hydroelectricity, evidence on the effects PV biodiversity has been building up only fairly recently suggests that they may directly impact ecosystems species through, for instance, habitat change loss, mortality, behaviour alteration or population displacements. Hence, we...
Abstract Background Tropical coral reefs cover ca. 0.1% of the Earth’s surface but host an outstanding biodiversity and provide important ecosystem services to millions people living nearby. They are currently threatened by local stressors (e.g. nutrient enrichment chemical pollution arising from poor land management, sewage effluents, agriculture, industry) global (mainly seawater warming acidification, i.e. climate change). Global interact in different ways, presence one stressor often...
Impacts of climate change on the future dynamics Central African forests are still largely unknown, despite acuteness expected changes and extent these forests. The high diversity species potentially equivalent responses to modifications major difficulties encountered when using predictive models evaluate impacts. In this study, we applied a mixture inhomogeneous matrix long-term experimental site located in M'Baïki forests, Republic. This model allows clustering tree into processes-based...
Abstract Temporal and spatial patterns in flowering phenology were assessed for eight tropical African tree species. Specifically, the frequency seasonality of at seven sites central Africa determined using field data, graphical analysis circular statistics. Additionally, variation timing across species range was investigated herbarium analysing relative influence latitude, longitude dry season with a Bayesian generalized linear model. Annual found 20 out 25 populations studied. For 21...
Understanding how environmental factors could impact population dynamics is of primary importance for species conservation. Matrix models are widely used to predict dynamics. However, in species‐rich ecosystems with many rare species, the small sizes hinder a good fit species‐specific models. In addition, classical matrix do not take into account variability. We propose mixture regression variable selection allowing simultaneous clustering groups according vital rate information...
En Afrique, la phénologie reproductive des arbres tropicaux, majoritairement annuelle, semble présenter une certaine régularité. Cette étude documente les variations intra- et interannuelles de forêt du Mayombe à partir données historiques Réserve Luki (République démocratique Congo). Le diamètre reproduction espèces exploitées pour le bois, encore largement méconnu, a été également examiné suffisamment représentées dans données. suivi phénologique 3 642 appartenant 158 39 familles réalisé...