References of "Vermeulen, Cédric"
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See detailFiche pédagogique : Jeu d’intelligence collective au service de la trajectoire de projet
Vermeulen, Cédric ULiege

Learning material (2020)

En partant d’une situation initiale (« de début de projet »), explorer collectivement les moteurs et les freins existants pour atteindre une situation finale souhaitée (« de fin de projet »).

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See detailAméliorer le fonctionnement des Associations de Surveillance et de Développement Durable (ASDD) en périphérie du Parc
Trégourès, Alexandre; Bianen, Florence; Vermeulen, Cédric ULiege et al

Learning material (2020)

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See detailLes instances de concertation autour du Parc National Odzala Kokoua : faciliter le dialogue entre les villages et le Parc
Trégourès, Alexandre; Bianen, Florence; Vermeulen, Cédric ULiege et al

Learning material (2020)

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See detailLa participation des communautés dans la gestion de la Fondation Odzala Kokoua (FOK)
Trégourès, Alexandre; Bianen, Florence; Vermeulen, Cédric ULiege et al

Learning material (2020)

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See detailThe Global Forest Transition as a Human Affair
Garcia, Claude A.; Savilaksoo, Sini; Verburg, René W. et al

in One Earth (2020), 2(5), 417-428

Forests across the world stand at a crossroads where climate and land-use changes are shaping their future. Despite demonstrations of political will and global efforts, forest loss, fragmentation, and ... [more ▼]

Forests across the world stand at a crossroads where climate and land-use changes are shaping their future. Despite demonstrations of political will and global efforts, forest loss, fragmentation, and degradation continue unabated. No clear evidence exists to suggest that these initiatives are working. A key reason for this apparent ineffectiveness could lie in the failure to recognize the agency of all stakeholders involved. Landscapes do not happen. We shape them. Forest transitions are social and behavioral before they are ecological. Decision makers need to integrate better representations of people’s agency in their mental models. A possible pathway to overcome this barrier involves eliciting mental models behind policy decisions to allow better representation of human agency, changing perspectives to better understand divergent points of view, and refining strategies through explicit theories of change. Games can help decision makers in all of these tasks. [less ▲]

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See detailQuantifying the Use of Forest Ecosystem Services by Local Populations in Southeastern Cameroon
Lhoest, Simon ULiege; Vermeulen, Cédric ULiege; Fayolle, Adeline ULiege et al

in Sustainability (2020), 12(6), 2505

In order to improve sustainability and design adequate management strategies in threatened tropical forests, integrated assessments of the use of ecosystem services are needed, combining biophysical ... [more ▼]

In order to improve sustainability and design adequate management strategies in threatened tropical forests, integrated assessments of the use of ecosystem services are needed, combining biophysical, social, and economic approaches. In particular, no integrated ecosystem services (ES) assessment has been conducted in Central Africa, where rural communities deeply depend on forests in a high-poverty context. Here, we aimed to quantify the use of ES provided by tropical forests to local populations in the Dja area (Cameroon), identify its determinants and evaluate its sustainability. We conducted various interviews and field surveys with 133 households in three villages, focusing on three provisioning services (bushmeat, firewood, and timber), and five cultural services (cultural heritage, inspiration, spiritual experience, recreation, and education). Local populations consumed a mean of 56 kg of bushmeat/person/year (hunting zones covering on average 213 km2), 1.17 m3 of firewood/person/year (collection zones covering on average 4 km2), and 0.03m3 of timber/person/year. Between 25% and 86% of respondents considered cultural services as important. The use of ES was mainly influenced by population size, deforestation rate, and forest allocations, whereas the influence of socio-demographic characteristics of households remained limited to slight di erences between Baka and Bantu people. We conclude that the consumption of firewood and timber is sustainable, whereas high hunting pressure has resulted in severe defaunation in the area due to the large decline in the abundance and biomass of forest mammals hunted for bushmeat by local populations. [less ▲]

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See detailConservation value of tropical forests: Distance to human settlements matters more than management in Central Africa
Lhoest, Simon ULiege; Fonteyn, Davy ULiege; Daïnou, Kasso ULiege et al

in Biological Conservation (2020), 241(108351),

Tropical forests in Central Africa host unique biodiversity threatened by human degradation of habitats and defaunation. Forests allocated to conservation, production and community management are expected ... [more ▼]

Tropical forests in Central Africa host unique biodiversity threatened by human degradation of habitats and defaunation. Forests allocated to conservation, production and community management are expected to have different conservation values. Here, we aimed to identify the determinants of the conservation value of tropical forests in southeastern Cameroon, by disentangling the effects of forest allocations, proximity to human settlements, and local habitat. We inventoried two taxonomical groups: mammal species with camera traps (3464 independent detection events) and dung beetle species with pitfall traps (4475 individuals). We used an integrated analytical approach, examining both species richness and composition. For both mammals and dung beetles, species richness decreased from the protected area to the community forests, and the logging concession showed intermediate richness. Species richness of both groups was negatively correlated to the proximity to human settlements and disturbance, with a decreasing gradient of body mass and the loss of the most threatened species. The replacement (i.e., spatial turnover) of both mammal and dung beetle species among forest allocations suggest an integration of conservation initiatives to a large number of different sites, with a priority on protected and remote areas of high biodiversity. These results confirm the high conservation value of protected areas and their essential role in conservation strategies, ecologically connected with well-managed production forests with variable conservation value mainly depending on accessibility. Community forests located close to villages are much more degraded but not totally defaunated and still provide bushmeat to local populations. © 2019 Elsevier Ltd [less ▲]

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See detailData on the diet of Lepilemur mittermeieri, a sportive lemur endemic to the northwest of Madagascar
Wilmet, Leslie ULiege; Devillers, Pierre; Vermeulen, Cédric ULiege et al

in Lemur News (2020), 22

Mittermeier’s sportive lemur (Lepilemur mittermeieri) is an endangered primate endemic to the Ampasindava peninsula, in north-west Madagascar. Lepilemur are known to be folivores with a low metabolic rate ... [more ▼]

Mittermeier’s sportive lemur (Lepilemur mittermeieri) is an endangered primate endemic to the Ampasindava peninsula, in north-west Madagascar. Lepilemur are known to be folivores with a low metabolic rate, but no specific investigation of the diet of Mittermeier’s sportive lemur has been reported. In 2015 and 2016, we conducted a field study of the species in two areas of the Ampasindava peninsula, involving direct observation of individuals equipped with radio-collars. We verified that Mittermeier’s sportive lemur is a solitary forager. We identified a total of 77 tree species consumed and a large variation in the spectrum of species used within the two studied sites. Most of the plant material consumed was made of leaves, with few fruits. [less ▲]

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See detailIdentifier des Activités Génératrices de Revenus
Vermeulen, Cédric ULiege

E-print/Working paper (2020)

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See detailA propos de quelques chenilles consommées par les Mongo en Province de l’Équateur (République démocratique du Congo)
Bocquet, Evelyne ULiege; Maniacky, Jacky; Vermeulen, Cédric ULiege et al

in Geo-Eco-Trop: Revue Internationale de Géologie, de Géographie et d'Écologie Tropicales (2020), 44(1), 109-130

La consommation par l’Homme des larves de Lépidoptères en Afrique connaît un intérêt actuel important. Deux semaines d’observation en Province de l’Équateur de la République Démocratique du Congo auprès ... [more ▼]

La consommation par l’Homme des larves de Lépidoptères en Afrique connaît un intérêt actuel important. Deux semaines d’observation en Province de l’Équateur de la République Démocratique du Congo auprès d’interlocuteurs Mongo et Batwa ont permis de collecter des informations concernant ce thème. Des données au sujet de six espèces ont été collectées, dont une espèce dont la consommation n’avait été signalée que deux fois auparavant, à savoir Nudaurelia anthinoides. Les différentes espèces sont passées en revue. Leurs dénominations locales et celles de leurs plantes nourricières sont citées. Les aires de répartition de la consommation des six espèces présentées sont évoquées sur base de citations antérieures. Les noms locaux révèlent un lien direct entre les plantes et les chenilles qui s’en nourrissent, par dérivation du nom d’une des plantes nourricières. [less ▲]

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See detailPerceptions of ecosystem services provided by tropical forests to local populations in Cameroon
Lhoest, Simon ULiege; Dufrêne, Marc ULiege; Vermeulen, Cédric ULiege et al

in Ecosystem Services (2019), 38

In Central Africa, local populations are deeply dependent on tropical forests, which provide numerous ecosystem services (ES). For the first time in Central Africa, we assessed the perceptions of ES ... [more ▼]

In Central Africa, local populations are deeply dependent on tropical forests, which provide numerous ecosystem services (ES). For the first time in Central Africa, we assessed the perceptions of ES provided by tropical forests to local populations, considering three land allocation types: a protected area, a Forest Stewardship Council (FSC)-certified logging concession, and three community forests. We conducted a questionnaire survey with 225 forest stakeholders in southeastern Cameroon, combining an open-ended question and 16 directed questions to evaluate the perceptions of ES significance and abundance, respectively. The ES most frequently reported as significant were provisioning (93% of respondents) and cultural & amenity services (68%), whereas regulating services were less mentioned (16%). Bushmeat provision was the only ES perceived as highly significant but not very abundant. There were slight variations of perceptions among forest land allocation types and respondents, suggesting a relative homogeneity in ES abundance. For further integrative ES assessment, we suggest quantifying ES with complementary ecological and economic approaches, such as meat provision, recreation, tourism, timber provision, spiritual experience, firewood provision, water quality regulation, and inspiration for culture. We also give three concrete recommendations for forest management, the most urgent being to provide sources of protein alternative to bushmeat. [less ▲]

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See detailAn assessment of the terrestrial mammal diversity in a sustainably logged forest in east Gabon: Impact of camera trap placement strategy on the detected species
Fonteyn, Davy ULiege; Cornélis, Daniel; Deflandre, Nicolas et al

Conference (2019, August)

Camera traps are widely used for assessing terrestrial vertebrate diversity across tropical forests. Non-random placement strategy is traditionally adopted, with camera traps oriented towards specific ... [more ▼]

Camera traps are widely used for assessing terrestrial vertebrate diversity across tropical forests. Non-random placement strategy is traditionally adopted, with camera traps oriented towards specific features such as game trails. However, this could artificially bias the capture rates of certain species. Here, we first assessed the terrestrial mammal diversity of sustainably logged forests in east Gabon. Then, we investigated the impact of placement strategy on the detected diversity by comparing game-trail based and systematically oriented camera traps. We followed a grid design replicated consecutively in four areas, composed of 15-17 sampling points placed every 2 km², and left for one month on the field. Each sampling point was composed of two cameras: the ‘systematic camera’ was placed close to the theoretical point and oriented towards a naturally cleared area, while the ‘game-trail oriented camera’ was located within a 20 m radius of the random camera. A total of 31 mammal species were identified, including gorillas, chimps, elephants, and leopards. Game-trail placement provided greater relative abundance for most species and the deviation to this pattern only concerned extremely infrequent species (sitatunga, golden cat). Multivariate analyses did not distinguish different species composition between the two strategies at the site scale (grid), although local differences did appear between pairs at the camera scale. When examining species occupancy, game-trail strategy does not seem to bias inventories compared to the random placement, and data from both strategies can be used in multi-site analyses, but this does not hold true for relative abundance. However, it is almost impossible to set up a strict random sampling and both strategies need a subjective decision when installing camera traps. We recommend maintaining game-trail orientation for large-scale camera trapping inventories conducted at species or community level. [less ▲]

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See detailAn assessment of the terrestrial mammal diversity in a sustainably logged forest in east Gabon: Impact of camera trap placement strategy on the detected species
Fonteyn, Davy ULiege; Cornélis, Daniel; Deflandre, Nicolas et al

Conference (2019, August)

Camera traps are widely used for assessing terrestrial vertebrate diversity across tropical forests. Non-random placement strategy is traditionally adopted, with camera traps oriented towards specific ... [more ▼]

Camera traps are widely used for assessing terrestrial vertebrate diversity across tropical forests. Non-random placement strategy is traditionally adopted, with camera traps oriented towards specific features such as game trails. However, this could artificially bias the capture rates of certain species. Here, we first assessed the terrestrial mammal diversity of sustainably logged forests in east Gabon. Then, we investigated the impact of placement strategy on the detected diversity by comparing game-trail based and systematically oriented camera traps. We followed a grid design replicated consecutively in four areas, composed of 15-17 sampling points placed every 2 km², and left for one month on the field. Each sampling point was composed of two cameras: the ‘systematic camera’ was placed close to the theoretical point and oriented towards a naturally cleared area, while the ‘game-trail oriented camera’ was located within a 20 m radius of the random camera. A total of 31 mammal species were identified, including gorillas, chimps, elephants, and leopards. Game-trail placement provided greater relative abundance for most species and the deviation to this pattern only concerned extremely infrequent species (sitatunga, golden cat). Multivariate analyses did not distinguish different species composition between the two strategies at the site scale (grid), although local differences did appear between pairs at the camera scale. When examining species occupancy, game-trail strategy does not seem to bias inventories compared to the random placement, and data from both strategies can be used in multi-site analyses, but this does not hold true for relative abundance. However, it is almost impossible to set up a strict random sampling and both strategies need a subjective decision when installing camera traps. We recommend maintaining game-trail orientation for large-scale camera trapping inventories conducted at species or community level. [less ▲]

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See detailUse of space and home range characteristics of Lepilemur mittermeieri, an endangered sportive lemur endemic to the Ampasindava peninsula, north‐west Madagascar
Wilmet, Leslie ULiege; Beudels-Jamar, Roseline C.; Schwitzer, Christoph et al

in American Journal of Primatology (2019), e23017

Lepilemur mittermeieri, a little‐studied sportive lemur of north‐west Madagascar, endemic to the Ampasindava Peninsula, faces habitat loss through forest degradation and rapid fragmentation. Understanding ... [more ▼]

Lepilemur mittermeieri, a little‐studied sportive lemur of north‐west Madagascar, endemic to the Ampasindava Peninsula, faces habitat loss through forest degradation and rapid fragmentation. Understanding its habitat requirement is the first step toward preservation of this threatened forest‐dependent species. In this study, we gathered data on the use of space and home range characteristics of L. mittermeieri. We studied individuals from early March to the end of June 2015 and 2016, in three sites of the Ampasindava peninsula. We radio‐tracked 15 individuals to obtain detailed information on the size and location of home ranges (around 450 hr of tracking). Direct observation and morphometric measurements provided additional data sets. Both kernel density estimation (KDE) and minimum convex polygon (MCP) methods yielded similar home range sizes (an average of 2.01 ha with KDE method and 1.96 ha with MCP method). We did not find differences in home range size between males and females, with respect to forest type or proximity to the forest edge. Home ranges overlapped and individuals showed low levels of territoriality. We highlighted a sexually‐dimorphic trait: males have longer upper canine than females. Our results constitute the first set of ecological information on Lepilemur mittermeieri and could be the basis for a conservation strategy for this endangered species with a very small distribution area. [less ▲]

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See detailForest or agroforestry systems, farmers value trees for ecosystem services provision in Nicaragua
Feintrenie, Laurène; Cifuentes-Espinosa, J. A.; Dos Santos-Moreira, N. et al

in Dupraz, Christian; Gosme, Marie; Lawson, Gerry (Eds.) 4th World Congress on Agroforestry. Book of abstracts. (2019, May)

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See detailQuel est le potentiel des drones pour inventorier les populations animales ?
Lhoest, Simon ULiege; Authelet, Manon ULiege; Bouché, Philippe et al

Conference given outside the academic context (2019)

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See detailLes Plans Simples de Gestion destinés à la production de bois-énergie en périphérie de Kinshasa : la participation et la restauration à l’épreuve du foncier
Péroches, Adrien; Dubiez, Emilien; Peltier, Régis et al

in Bois et Forêts des Tropiques (2019), 340

En République démocratique du Congo, l’agriculture itinérante sur brûlis et la production de bois-énergie sont les principales activités génératrices de revenus des populations périurbaines. Mais ces ... [more ▼]

En République démocratique du Congo, l’agriculture itinérante sur brûlis et la production de bois-énergie sont les principales activités génératrices de revenus des populations périurbaines. Mais ces activités sont également les premières causes de déforestation, comme c’est le cas dans un rayon de 200 km autour de Kinshasa et autour des principales métropoles du pays. Afin d’améliorer la gestion des espaces périurbains et d’assurer l’alimentation durable en bois-énergie de Kinshasa, le projet UE Makala a co-construit avec douze communautés du Plateau Batéké et du Kongo central des Plans Simples de Gestion des terroirs et du bois-énergie via une méthode participative. En complément, des itinéraires techniques (plantations agroforestières à Acacia auriculiformis et d’essences locales, régénération naturelle assistée) ont été proposés et testés avec les agriculteurs producteurs de bois-énergie de ces communautés. Après une période de 18 mois de mise en oeuvre autonome des Plans Simples de Gestion, une évaluation de leur appropriation par « Principes, critères, indicateurs et vérificateurs » a été menée. Cette évaluation a montré que le niveau d’appropriation des Plans Simples de Gestion et des itinéraires techniques promus par le projet UE Makala est meilleur au Kongo central, où la forêt a quasiment disparu, qu’au plateau Batéké où des reliquats de forêts-galeries existent encore. De plus, il a été mis en évidence dans les deux zones que les activités collectives étaient peu appropriées alors que les activités individuelles, pour lesquelles la répartition du travail et des bénéfices était sans ambiguïté, ont été plus largement appropriées. Cependant, à l’échelle individuelle, des différences notables d’appropriation ont été constatées en fonction du statut foncier des bénéficiaires. Les faibles superficies disponibles et l’accès au foncier sont les principaux facteurs limitant l’appropriation des itinéraires techniques agroforestiers. [less ▲]

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See detailUtilisation des drones pour le suivi des aires protégées en RDC
Ngabinzeke, Jean Semeki; Vermeulen, Cédric ULiege; Linchant, Julie ULiege et al

in Cahiers Africains (2019), 93

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See detailDo topography and fruit presence influence occurrence and intensity of crop-raiding by forest elephants (Loxodonta africana cyclotis)?
Ngama, Steeve ULiege; Bindelle, Jérôme ULiege; Poulsen, John R. et al

in PLoS ONE (2019), 14(3), 16

Crop damage by forest elephants (Loxodonta africana cyclotis) and the resulting human-elephant conflict are issues of great concern for both the conservation of the species and the protection of rural ... [more ▼]

Crop damage by forest elephants (Loxodonta africana cyclotis) and the resulting human-elephant conflict are issues of great concern for both the conservation of the species and the protection of rural livelihoods in Central Africa. Addressing these problems requires identifying the factors that facilitate or impede crop-raiding by forest elephants. Yet to date, the environmental or anthropogenic factors that influence the occurrence and intensity of cropraiding by forest elephants are largely unknown. We used a multivariate approach to investigate conditions under which forest elephants raid some fields and not others in the buffer zone of Monts de Cristal National Park (MCNP), Gabon. We first interviewed 121 farmers from 11 villages situated within 10 km of MCNP regarding the occurrence of elephant cropraiding of their fields. We then collected data on 39 explanatory variables to characterize the agricultural fields. Of these, the most important predictors of elephant raid occurrence of crop damage were presence of fruit trees, elephant deterrents (scarecrows, fire, wire string fences and empty barrels), and field topography. We secondly assessed the effect of stage of crop growth, presence of fruit trees, field topography and presence of elephant deterrents on crop-raiding occurrence and intensity by counting raids and measuring areas of crop damage every week in 17 plantations over 19 weeks in the most elephant-impacted zone of the study area. We found that fruit presence and stage of crop growth led to more intense damage to crops, whereas local deterrents did not inhibit raiding events and crop damage by elephants. We report a tradeoff between non-timber forest products (NTFP) services and crop-raiding by elephants. We show for the first time that steep topography impedes elephant damage to crops with no raids recorded in fields with surrounding slopes greater than 25%. We discuss whether farming on steep fields could be used as a strategy for mitigating crop-raiding to favor human-elephant coexistence and enhance elephant conservation. [less ▲]

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See detailÉtat des connaissances sur les céphalophes (genres Cephalophus et Philantomba) des forêts denses humides d’Afrique centrale (synthèse bibliographique)
Houngbegnon, Fructueux ULiege; Sonké, Bonaventure; Vermeulen, Cédric ULiege et al

in Biotechnologie, Agronomie, Société et Environnement (2019)

Introduction. This article provides a synthesis of current knowledge on classification, ecology and biology of duikers living in central African rainforests (genera Cephalophus and Philantomba). It also ... [more ▼]

Introduction. This article provides a synthesis of current knowledge on classification, ecology and biology of duikers living in central African rainforests (genera Cephalophus and Philantomba). It also provides an update on the anthropogenic pressures on these terrestrial mammals. Literature. Many publications on central African duikers are focused on subsistence or commercial hunting, and poaching. As the taxonomic classification of duikers has recently been revised, new species have been described with very little information available on their ecology. This synthesis highlights the gaps in the scientific knowledge and proposes priority themes for future research. Conclusions. Although many aspects remain to be explored for some species (i.e., habitat use, home range), it is suggested to investigate in priority: the inventory methods, the role of duikers in forest dynamics, and the impact of logging on their populations. [less ▲]

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