References of "Vermeulen, Cédric"
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See detailIdentification d’indicateurs de la transition forestière en lien avec les impacts de la déforestation sur les socio-écosystèmes en Afrique centrale
Gillet, Pauline ULg; Vermeulen, Cédric ULg

Poster (2015, December 26)

La théorie de la transition forestière lie l’évolution du couvert forestier au temps (Mather, 1992). Dans la première phase, le couvert forestier est très dense. Il diminue ensuite avec l’augmentation de ... [more ▼]

La théorie de la transition forestière lie l’évolution du couvert forestier au temps (Mather, 1992). Dans la première phase, le couvert forestier est très dense. Il diminue ensuite avec l’augmentation de la densité de population qui pratique la défriche pour la production agricole et utilise le bois pour répondre aux besoins en énergie et en bois d’œuvre. Dans un troisième temps, l’économie se spécialise, l’agriculture s’intensifie et est pratiquée sur les terres les plus productives et le rôle de l’écosystème forestier dans l’économie diminue. L’abandon des terres les moins productives permet la recolonisation forestière visible sur la courbe de transition. La présente étude tente d’identifier et de proposer des indicateurs d’occupation spatiale permettant, sur base d’images de télédétection, de prévoir la position réelle d’un site sur la courbe de transition forestière. Ensuite, l’étude des socio-écosystèmes en lien avec la transition forestière permet de démontrer l’impact de la diminution du couvert forestier sur le fonctionnement des sociétés humaines. Nous nous sommes penchés sur différents aspects caractérisant les activités des populations locales dans trois sites d’étude situés sur un gradient de déforestation en Afrique centrale tels que la composition de repas et l’origine des aliments. On observe que la déforestation induit une diminution des composants issus des activités fortement liées à l’écosystème telles que la chasse, la pêche ou la collecte au profit de l’agriculture et de l’élevage. [less ▲]

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See detailVers des Concessions 2.0 en Afrique Centrale. Reconnaitre et gérer les droits superposés
Karsenty, Alain; Vermeulen, Cédric ULg

Conference (2015, December 05)

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See detailToward Concessions 2.0 in Central Africa Recognising and managing overlapping tenure rights
Karsenty, Alain; Vermeulen, Cédric ULg

Conference (2015, November 30)

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See detailField data on the little known and endangered Lepilemur mittermeieri
Wilmet, Leslie ULg; Schwitzer, Christoph; Beudels-Jamar, Roseline C. et al

in Journal of Primatology (2015), 4(2),

Lepilemur mittermeieri is a very little known sportive lemur of the Ampasindava peninsula of Madagascar, presently regarded as endangered. On the basis of genetic material only, obtained from three ... [more ▼]

Lepilemur mittermeieri is a very little known sportive lemur of the Ampasindava peninsula of Madagascar, presently regarded as endangered. On the basis of genetic material only, obtained from three individuals collected at the same locality. No observation confidently allocated to the species has been reported since. The objectives of our research were to verify that the sportive lemurs found in forests of the Ampasindava peninsula beyond the type-locality of Lepilemur mittermeieri belonged to the same species as the type, to provide morphological and behavioural data for populations confidently attributed to L. mittermeieri and to obtain for these populations preliminary evaluations of density variations within the peninsula. Our surveys were undertaken in March and April 2014 in remnant forest patches of the western part of the Ampasindava peninsula. Linear transects by night and punctual observations by day were conducted. A total of 54 animals were seen along nine transects situated in four forest patches, two at low altitude and two at high altitude. All animals examined and photographed appeared similar, and the impression was gained that a single taxon was involved. Genetic material collected from one dead specimen proved identical to the type of L. mittermeieri which confirmed the identity of the populations we observed. It thus appears that L. mittermeieri is indeed the only sportive lemur present on the peninsula and that it occurs in several forest remnants. We endeavoured to get evaluations of the density and abundance of the species in the four forest patches we studied. We used KAIs (Kilometric Abundance Indices) to evaluate and compare relative densities, and Buckland’s distance sampling method to evaluate absolute densities. The latter suggested a density of 1.9 animals/ha, a result that must, however, be taken with caution. [less ▲]

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See detailLes forêts communautaires : élaboration des plans simples de gestion
Julve, Cécilia; Meunier, Quentin; Pasquier, Alexandra et al

in Mille, Gilles; Louppe, Dominique (Eds.) Mémento du forestier tropical (2015)

Le chapitre présente les grandes lignes de l'aménagement des forêts communautaires en Afrique centrale

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See detailTracks as a non-invasive tool for monitoring large carnivores
Authelet, Manon ULg; Vermeulen, Cédric ULg

Conference (2015, October 13)

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See detailPopulation density evaluation of Lepilemur mittermeieri in the Northwest Madagascar - Ampasindava peninsula
Commans, Morgane; Wilmet, Leslie ULg; Vermeulen, Cédric ULg

Scientific conference (2015, October 13)

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See detailWildlife conservation at Madagascar - A global overview
Wilmet, Leslie ULg; Vermeulen, Cédric ULg; Beudels Jamar, Roseline C.

Scientific conference (2015, October 13)

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See detailWiMUAS: New inventory method to perform wildlife counts with UAS and review the large datasets
Linchant, Julie ULg; Lhoest, Simon ULg; Semeki, Jean et al

Conference (2015, October 13)

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See detailImpact of forest transition on non-timber forest products in Central Africa
Gillet, Pauline ULg; Vermeulen, Cédric ULg; Feintrenie, Laurène

Conference (2015, September)

The objective of the study is to evaluate the impact of deforestation on non-timber forest products (NTFPs) harvest in Central Africa. The most common vegetal NTFPs are fruits, barks and leaves used as ... [more ▼]

The objective of the study is to evaluate the impact of deforestation on non-timber forest products (NTFPs) harvest in Central Africa. The most common vegetal NTFPs are fruits, barks and leaves used as complements to the staple food (cassava or plantain). Animal NTFPs such as caterpillars, worms and bush meat represent a major source of animal protein in the villagers’ diet. We analyzed the evolution of several parameters including NTFPs diversity, distance to the road, changes in land tenure rules, proportion in the alimentary bolus and in the villagers’ incomes. The research is based on field surveys, participatory mapping and geolocation of activities held in 8 villages. Three study sites are located at different stages on Mather’s forest transition curve (Mather, 1992). This curve shows the relationship between forest cover and population density. The sites represent the situations: (i) important cover of intact forest, (ii) forest partially degraded and under pressure of conversion to other land uses and (iii) small surfaces of degraded forest with a trend of plantation of useful trees on deforested land. Results show a reduction in NTFPs diversity along with the increase of deforestation. The maximum distance of collection sites to the road increases between the first and the second study site, as a consequence of the decrease in the quantity of NTFPs available. This distance decreases significantly in the third study site due to the contraction of villages’ terroir. The diversity of bush meat decreases while the hunting bag evolves from big to small species along with the forest transition. Land tenure rules to access and extract NTFPs become stricter. As a consequence, the proportion of these products reduces in the alimentary bolus and in the family cash income. This analysis establishes a strong link between Mather’s forest transition curve and the decline of the importance of NTFPs in the village production and livelihoods systems [less ▲]

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See detailLes premières forêts communautaires du Gabon - Le film - Bonus 1
Meunier, Quentin; Boldrini, Sylvie; Federspiel, Michèle et al

Conference (2015, September)

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See detailAre unmanned aircraft systems (UASs) the future of wildlife monitoring? A review of accomplishments and challenges
Linchant, Julie ULg; Lisein, Jonathan ULg; Semeki, Jean et al

in Mammal Review (2015), 45

1. Regular monitoring of animal populations must be established to ensure wildlife protection, especially when pressure on animals is high. The recent development of drones or unmanned aircraft systems ... [more ▼]

1. Regular monitoring of animal populations must be established to ensure wildlife protection, especially when pressure on animals is high. The recent development of drones or unmanned aircraft systems (UASs) opens new opportunities. UASs have several advantages, including providing data at high spatial and temporal resolution, providing systematic, permanent data, having low operational costs and being low-risk for the operators. However, UASs have some constraints, such as short flight endurance. 2. We reviewed studies in which wildlife populations were monitored by using drones, described accomplishments to date and evaluated the range of possibilities UASs offer to provide new perspectives in future research. 3. We focused on four main topics: 1) the available systems and sensors; 2) the types of survey plan and detection possibilities; 3) contributions towards antipoaching surveillance; and 4) legislation and ethics. 4. We found that small fixed-wing UASs are most commonly used because these aircraft provide a viable compromise between price, logistics and flight endurance. The sensors are typically electro-optic or infrared cameras, but there is the potential to develop and test new sensors. 5. Despite various flight plan possibilities, mostly classical line transects have been employed, and it would be of great interest to test new methods to adapt to the limitations of UASs. Detection of many species is possible, but statistical approaches are unavailable if valid inventories of large mammals are the purpose. 6. Contributions of UASs to anti-poaching surveillance are not yet well documented in the scientific literature, but initial studies indicate that this approach could make important contributions to conservation in the next few years. 7. Finally, we conclude that one of the main factors impeding the use of UASs is legislation. Restrictions in the use of airspace prevent researchers from testing all possibilities, and adaptations to the relevant legislation will be necessary in future. [less ▲]

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See detailLes progrès de la foresterie sociale et communautaire
Vermeulen, Cédric ULg; Meunier, Quentin; Moumbogou, Carl et al

Conference (2015, September)

Depuis plus de dix ans, le Gabon s'est doté de lois forestières riches en promesses quant à la gestion sociale des massifs forestiers par les populations locales, à travers le concept de « forêt ... [more ▼]

Depuis plus de dix ans, le Gabon s'est doté de lois forestières riches en promesses quant à la gestion sociale des massifs forestiers par les populations locales, à travers le concept de « forêt communautaire ». C'est dans ce cadre que s'est inscrit le projet Union Européenne DACEFI, projet mis en oeuvre de 2010 à 2014 à travers un partenariat entre le Ministère en charge des Forêts, le WWF, l’association sans but lucratif belge Nature+ et le Laboratoire de foresterie tropicale et subtropicale de Gembloux Agro-Bio Tech. L'objectif était de développer la foresterie sociale et communautaire sur les plans technique, institutionnel et organisationnel. Les équipes du projet ont développé des concepts et méthodes innovantes adaptées aux contextes socio-économiques locaux. La mise en place d'un cadre réglementaire a permis la création des premières forêts communautaires du Gabon, tandis que le renforcement de capacités au niveau des communautés a permis une autonomisation et une responsabilisation nécessaire à la mise en oeuvre des premiers plans simples de gestion. DACEFI en chiffres, c’est une centaine de villages sensibilisés depuis le début du projet, 16 sites partenaires accompagnés, 8 associations villageoises reconnues et formées, 7 communautés activement engagées dans la création d’une forêt communautaire, plus de 10 écoles et plusieurs centaines d’élèves primaires sensibilisés sur la gestion durable, 10 textes de loi rédigés ou révisés pour la mise en place du cadre réglementaire régissant les forêts communautaires au Gabon, une clé de répartition des revenus construite, accompagnée d’outils ludiques pour sa mise en place et sa compréhension et enfin plus de 10 000 plants d’arbres produits en pépinières et des dizaines de sites enrichis. Un film a également été produit qui sera présenté séparément au congrès. [less ▲]

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See detailDeveloping biodiversity indicators on a stakeholders' opinions basis: the gypsum industry Key Performance Indicators framework.
Pitz, Carline ULg; Mahy, Grégory ULg; Vermeulen, Cédric ULg et al

in Environmental Science and Pollution Research (2015)

Aims: To establish a common Key Performance Indicators (KPIs) framework for reporting about the gypsum industry biodiversity at the European level. Methods: In order to integrate different opinions and to ... [more ▼]

Aims: To establish a common Key Performance Indicators (KPIs) framework for reporting about the gypsum industry biodiversity at the European level. Methods: In order to integrate different opinions and to reach a consensus framework, an original participatory process approach has been developed among different stakeholder groups: Eurogypsum, European and regional authorities, universities scientists, consulting offices, European and regional associations for the conservation of nature and the extractive industry. The strategy is developed around four main steps: (i) building of a maximum set of indicators to be submitted to stakeholders based on the literature (Focus Group method); (ii) evaluating the consensus about indicators through a policy Delphi survey aiming at the prioritization of indicator classes using the Analytic Hierarchy Process method (AHP) and of individual indicators; (iii) testing acceptability and feasibility through analysis of Environmental Impact Assessments (EIAs) and visits to three European quarries; (iv) Eurogypsum final decision and communication. Results: The resulting framework contains a set of 11 indicators considered the most suitable for all the stakeholders. Conclusions: Our KPIs respond to European legislation and strategies for biodiversity. The framework aims at improving sustainability in quarries and at helping to manage biodiversity as well as to allow the creation of coherent reporting systems. The final goal is to allow for the definition of the actual biodiversity status of gypsum quarries and allow for enhancing it. The framework is adaptable to the local context of each gypsum quarry. [less ▲]

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See detailHabitat use of the endangered Lepilemur mittermeieri - Northwest Madagascar
Wilmet, Leslie ULg; Vermeulen, Cédric ULg; Beudels-Jamar, Roseline C et al

Conference (2015, August)

Genus Lepilemur is exemplary of the endemic mammalian fauna of the island of Madagascar. Sportive lemurs have small distribution ranges, and fairly small total populations and are particularly negatively ... [more ▼]

Genus Lepilemur is exemplary of the endemic mammalian fauna of the island of Madagascar. Sportive lemurs have small distribution ranges, and fairly small total populations and are particularly negatively affected by deforestation and habitat fragmentation. Our research focus on a poorly-known taxon, Lepilemur mittermeieri, whose distribution range is located on the Ampasindava peninsula in the northwest Madagascar. It has been described in 2006 on the basis of genetic material only. Since then, no further research has been conducted and general information of this endangered species is urgently requested. We will present our global project as well as the results of a second field mission conducted from March to June 2015 in order to specifically 1) investigate habitat use of 8 radio-collared Lepilemur mittermeieri by the analysis of their home range, feeding ecology and sleeping sites characteristics and 2) to complete forest characterization of the home range of each radio-collared animal. This study is conducted on the Ampasindava peninsula, a priority area for Malagasy conservation. [less ▲]

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See detailLe Parc National Sahamalaza - Iles Radama serait-il l’ultime refuge pour certaines espèces de lémuriens du nord-ouest de Madagascar ?
Wilmet, Leslie ULg; Beudels-Jamar, Roseline C.; Schwitzer, Christoph et al

in Tropicultura (2015)

Depuis des millions d’années, la faune et la flore terrestre de Madagascar ont évolué dans un espace isolé. Suite à cette situation, le niveau d’endémisme y est très élevé et l’ensemble de l’île ... [more ▼]

Depuis des millions d’années, la faune et la flore terrestre de Madagascar ont évolué dans un espace isolé. Suite à cette situation, le niveau d’endémisme y est très élevé et l’ensemble de l’île représente un des plus importants hotspot de biodiversité. Madagascar fait aussi partie des pays les plus touchés en termes de destruction des habitats naturels ; 90 % de la végétation d’origine est aujourd’hui perdue. La déforestation et la fragmentation des habitats forestiers menace particulièrement les primates de l’île, les lémuriens. L’île est considérée par de nombreuses organisations internationales comme une priorité pour la conservation de la nature, autant dans le domaine zoologique que botanique. Les premières aires protégées de Madagascar ont été établies en 1927 et l’île en compte aujourd’hui 47. Cet article reprend l’historique et fait l’état des lieux du parc national Sahamalaza-Ile Radama, situé au nord-ouest de Madagascar. Nous nous intéressons spécifiquement à deux espèces de lémuriens emblématiques du parc ; Eulemur flavifrons et Lepilemur sahamalazensis ainsi qu’aux menaces qui pèsent sur leur écosystème. Différentes mesures ont été proposées dans le cadre d’un Plan d’Action de Conservation afin d’en améliorer la gestion et assurer la survie de ces espèces. [less ▲]

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See detailLes forêts communautaires et l'APV-FLEGT au Gabon
Moumbogou, Carl; Meunier, Quentin; Mvou Biyogo, T. et al

E-print/Working paper (2015)

Promu par l’Union européenne depuis 2003, le plan d’action FLEGT propose une approche novatrice de lutte contre l’exploitation illégale des forêts, en établissant un lien entre l’amélioration de la ... [more ▼]

Promu par l’Union européenne depuis 2003, le plan d’action FLEGT propose une approche novatrice de lutte contre l’exploitation illégale des forêts, en établissant un lien entre l’amélioration de la gouvernance dans les pays producteurs et l’accès au marché de l’UE. Ce plan concerne tous les titres forestiers, dont les forêts communautaires. Ces dernières ont été désignées au Gabon comme source légale de bois à la faveur des négociations d’un APVFLEGT avec l’UE. Dès lors, et afin de stabiliser le système qui sera mis en place, il est nécessaire de préparer des outils adaptés permettant d’articuler le FLEGT et les forêts communautaires. [less ▲]

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See detailGarantir la légalité et assurer la traçabilité. Deux piliers de la mise en oeuvre de l'APV-FLEGT.
Moumbogou, Carl; Meunier, Quentin; Bracke, Charles et al

E-print/Working paper (2015)

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