A5075070644- Wildlife Ecology and Conservation
- Agriculture and Rural Development Research
- Rangeland Management and Livestock Ecology
- Conservation, Biodiversity, and Resource Management
- African Botany and Ecology Studies
- Primate Behavior and Ecology
- Species Distribution and Climate Change
- French Urban and Social Studies
- Wildlife-Road Interactions and Conservation
- Animal Ecology and Behavior Studies
- Forest Management and Policy
- Amphibian and Reptile Biology
- Ecology and biodiversity studies
- Animal Diversity and Health Studies
- African history and culture studies
- Remote Sensing and LiDAR Applications
- Genetic diversity and population structure
- Ecology and Vegetation Dynamics Studies
- Animal Behavior and Welfare Studies
- Land Rights and Reforms
- Land Use and Ecosystem Services
- Animal Behavior and Reproduction
- Animal Vocal Communication and Behavior
- Robotics and Sensor-Based Localization
- Bat Biology and Ecology Studies
University of Liège
2016-2025
Gembloux Agro-Bio Tech
2016-2025
École Normale Supérieure - PSL
2014
Experimental Center of Subtropical Forestry
2013
Centrum Wiskunde & Informatica
2001
Arkansas Agricultural Experiment Station
2000
The use of a UAS (Unmanned Aircraft System) was tested to survey large mammals in the Nazinga Game Ranch south Burkina Faso. Gatewing ×100™ equipped with Ricoh GR III camera used test animal reaction as passed, and visibility on images. No recorded passed at height 100 m. Observations, made set more than 7000 images, revealed that only elephants (Loxodonta africana) were easily visible while medium small sized not. easy observation allows experts enumerate them images acquired We, therefore,...
Forests across the world stand at a crossroads where climate and land-use changes are shaping their future. Despite demonstrations of political will global efforts, forest loss, fragmentation, degradation continue unabated. No clear evidence exists to suggest that these initiatives working. A key reason for this apparent ineffectiveness could lie in failure recognize agency all stakeholders involved. Landscapes do not happen. We shape them. Forest transitions social behavioral before they...
Cameroonian community forests were designed and implemented to meet the general objectives of forest management decentralization for democratic management.The spread conflicts all over country has shown that these broad expectations have not been met.We describe occurring in 20 by types actors processes involved.We argue a number external (community vs. actors) internal (intra-community) are part causes blocking expected outcome forests, fostering bad governance loss confidence.Rent...
Abstract. The common hippopotamus (Hippopotamus amphibius L.) is part of the animal species endangered because multiple human pressures. Monitoring for conservation then essential, and development census protocols has to be chased. UAV technology considering as one new perspectives wildlife survey. Indeed, this technique many advantages but its main drawback generation a huge amount data handle. This study aims at developing an algorithm automatic count hippos, by exploiting thermal infrared...
In Gabon, like elsewhere in Africa, crops are often sources of conflict between humans and wildlife. Wildlife damage to can drastically reduce income, amplifying poverty creating a negative perception wild animal conservation among rural people. this context, crop-raiding animals elephants quickly become "problem animals". To deter from raiding beehives have been successfully employed East Africa; however, method has not yet tested Central Africa. We experimentally examined whether the...
Introduction The common hippopotamus Hippopotamus amphibius L. is a vulnerable species that requires efficient methods to monitor its populations for conservation purposes. Rapid evolution of civil drones provides new opportunities but survey protocols still need development. This study aims determine the optimal flight parameters accurate population estimates. A second objective evaluate effects three environmental factors: wind speed, sun reflection and cloud cover. Method We estimated two...
Abstract Although forest elephants ( Loxodonta cyclotis ) are known to use logged forests, the impact of selective logging on this critically endangered species has never been well established. Considering potential some areas serve as other effective area‐based conservation measures, aligning with Convention Biological Diversity's 30/30 initiative, we aimed assess short‐term impacts three population parameters: presence, abundance, and activity elephants. Combining camera traps dung surveys...
Tropical forests hold most of Earth’s biodiversity and a higher concentration threatened mammals than other biomes. As result, some mammal species persist almost exclusively in protected areas, often within extensively transformed heavily populated landscapes. Other depend on remaining remote forested areas with sparse human populations. However, it remains unclear how mammalian communities tropical respond to anthropogenic pressures the broader landscape which they are embedded. governments...
Abstract The wildlife populations of Northern Central African Republic experienced precipitous declines during the 1970s and 1980s. While anecdotes coming out region indicate that remain under serious threat, little is known about their status. An aerial sample count was carried in at end dry season June 2005 covered an 85,000 km 2 complex landscape containing national parks, hunting reserves community areas. Results show a dramatic decline since previous survey 1985. In 20 years, large...
Conservation of natural ecosystems requires regular monitoring biodiversity, including the estimation wildlife density. Recently, unmanned aerial systems (UAS) have become more available for numerous civilian applications. The use small drones surveys as a surrogate manned is becoming increasingly attractive and has already been implemented with some success. This raises question how to process UAS imagery in order determine surface area sampling strips within an acceptable confidence level....
Damage caused by ungulates to agricultural areas is difficult evaluate because the real extent of damage remains usually poorly described and potentially leads conflicts. Recent advances in unmanned aerial systems (UAS) provide new versatile mapping quantification possibilities a wide range applications. We used crop fields (Zea mays) damaged wild boar (Sus scrofa) compared means three methods: (i) traditional ground-based assessment; (ii) UAS orthoimages with operator delineation; (iii)...
Abstract Camera traps (CTs) have been increasingly used for wildlife monitoring worldwide. In the tropics, most CT inventories target wildlife‐friendly sites, and CTs are commonly placed towards trails. However, it has argued that this placement strategy potentially provides biased results in comparison to more systematic or randomized approaches. Here, we investigated impact of on remotely sensed mammal diversity a tropical forest Gabon by comparing pairs systematically...
The duiker community in Central African rainforests includes a diversity of species that can coexist the same area. study their activity patterns is needed to better understand habitat use or association between species. Using camera traps, we studied temporal patterns, and quantified for first time overlap spatial co-occurrence Our results show that: (i) Two are strongly diurnal: Cephalophus leucogaster, Philantomba congica, (ii) two mostly C.callipygus C. nigrifrons, (iii) one nocturnal:...
Industrial forest concessions cover about 45 million hectares in Central Africa.This paper discusses the weaknesses of current concession model and initiatives for helping it evolve; then proposes a new type concession, entitled 'Concessions 2.0', adapted to future challenges presented by overlapping among rights modes harvesting multiple resources.This proposed is based on four features: (i) mapping recognition customary territories within around industrial (ii) timber revenue sharing...
Crop damage by forest elephants (Loxodonta africana cyclotis) and the resulting human-elephant conflict are issues of great concern for both conservation species protection rural livelihoods in Central Africa. Addressing these problems requires identifying factors that facilitate or impede crop-raiding elephants. Yet to date, environmental anthropogenic influence occurrence intensity largely unknown. We used a multivariate approach investigate conditions under which raid some fields not...
In order to improve sustainability and design adequate management strategies in threatened tropical forests, integrated assessments of the use ecosystem services are needed, combining biophysical, social, economic approaches. particular, no (ES) assessment has been conducted Central Africa, where rural communities deeply depend on forests a high-poverty context. Here, we aimed quantify ES provided by local populations Dja area (Cameroon), identify its determinants evaluate sustainability. We...