References of "Fonteyn, Davy"
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See detailEcosystem services assessment in Southeast Cameroon tropical forests
Lhoest, Simon ULiege; Dufrêne, Marc ULiege; Jamar, Pierre et al

Scientific conference (2019, March 11)

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See detailConservation value of protected and logged tropical forests in Cameroon
Lhoest, Simon ULiege; Fonteyn, Davy ULiege; Daïnou, Kasso ULiege et al

Scientific conference (2019, January 25)

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See detailBanque de graines du sol et déterminants de la germination du tali, Erythrophleum suaveolens (Guill. & Perr.) Brenan
Douh, Chauvelin ULiege; Gorel, Anaïs ULiege; Daïnou, Kasso ULiege et al

in Bois et Forêts des Tropiques (2018), 338

Cette étude évalue l’abondance des graines d’Erythrophleum suaveolens dans la banque du sol des forêts denses humides d’Afrique centrale. Les travaux ont été menés au Nord-Congo dans deux types forestiers ... [more ▼]

Cette étude évalue l’abondance des graines d’Erythrophleum suaveolens dans la banque du sol des forêts denses humides d’Afrique centrale. Les travaux ont été menés au Nord-Congo dans deux types forestiers : la forêt à Celtis sur des sols argilo-sableux à sablo-argileux et la forêt à Manilkara sur des sols sableux. Les tiges d’E. suaveolens (dhp ≥ 10 cm) ont été inventoriées dans deux parcelles de 400 ha, et les structures diamétriques de leurs populations ont été comparées. En outre, 80 fosses (2 x 40 fosses par type de forêt) ont été creusées aux pieds de 20 arbres (10 par forêt), sur trois couches contiguës de 10 cm chacune, soit à une profondeur totale de 30 cm, et l’abondance des graines dans la banque du sol a été évaluée. La dormance des graines récoltées a été testée par des essais de germination après traitement au H2SO4 et cinq graines prélevées jusqu’à une profondeur de 20 cm dans la forêt à Celtis ont été utilisées pour estimer leur âge par Spectroscopie de Masse par Accélérateur (SMA). La comparaison des structures diamétriques indique une plus grande proportion de tiges de faible diamètre dans la forêt à Celtis. Alors que les densités de tiges (dhp ≥ 10 cm) sont proches, avec 0,85 et 1,05 tige/ha respectivement, dans la forêt à Celtis et la forêt à Manilkara, les densités de graines sont significativement plus élevées dans la forêt à Celtis (8,55 graines/m2) que dans la forêt à Manilkara (0,15 graine/m2). Le pourcentage maximum de germination obtenu était de 19,1 % pour des graines n’ayant subi aucun traitement. Les lots traités à l’acide ont présenté de moindres taux de germination. Ces graines pourraient se conserver une dizaine d’années dans la banque du sol. Les facteurs pouvant influencer les variations de densité des graines sont discutés et des recommandations sylvicoles sont formulées. [less ▲]

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See detailAssessment of mammal biodiversity and bushmeat offtake in the tropical forests of southeastern Cameroon
Lhoest, Simon ULiege; Fonteyn, Davy ULiege; Hette, Samuel et al

Poster (2018, November 27)

Tropical forests of central Africa host an important part of the world’s terrestrial biodiversity and provide numerous provisioning, regulating, and cultural ecosystem services to human populations. Major ... [more ▼]

Tropical forests of central Africa host an important part of the world’s terrestrial biodiversity and provide numerous provisioning, regulating, and cultural ecosystem services to human populations. Major threats hang over those diverse ecosystems, namely land use changes and consumption of bushmeat. Our study aimed to assess mammal diversity and bushmeat consumption in three contrasted and largely represented forest land allocation types in southeastern Cameroon: (i) a protected area, (ii) a FSC-certified logging concession, and (iii) three community forests. Mammal inventories were conducted with 44 camera traps installed for 3 months. Bushmeat consumption was quantified using both tracking of volunteer hunters over 651 kilometers and the daily monitoring of the food bowl of 55 households for 3 months. Though a great part of the mammal diversity is retained inside the logging concession, the protected area holds the richest and most abundant mammal communities, whereas community forests were found to be defaunated and structurally disturbed. The size of the hunting territories is influenced by many factors such as human population density or the presence of alternative protein sources. Although poaching controls in the protected area and, to a lesser extent, in the certified logging concession appear to play a deterrent role, evidence of hunting activities were found in all land allocation types. Bushmeat represents on average 56% of the animal protein consumed by households, the remaining part being mainly fish. Our results demonstrated the ability of the certified logging concession and the protected area in the conservation of wildlife species and the provision of bushmeat for local populations. It remains essential to maintain and develop anti-poaching patrols in those areas, strategically based on geographic data of hunting pressure. Current levels of hunting activities also confirm the need for the development of alternatives to bushmeat. [less ▲]

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See detailImpacts comparés de trois régimes fonciers sur la biodiversité et la biomasse forestière au sud-est du Cameroun
Fonteyn, Davy ULiege

Master's dissertation (2017)

Terrestrial ecosystems are currently facing an unprecedented biodiversity crisis. In the future, and specifically in the tropics, land use changes will have the greatest impacts on biodiversity. The aim ... [more ▼]

Terrestrial ecosystems are currently facing an unprecedented biodiversity crisis. In the future, and specifically in the tropics, land use changes will have the greatest impacts on biodiversity. The aim of this master thesis was to assess biodiversity for trees (forest structure and composition) and animals (composition) in three different land tenures in the semi-deciduous forests of South-East Cameroon. The Dja Reserve represents the control never logged, while the community forests are considered as the highest disturbance level. The sites sampled inside the certified FSC logging concession were at an intermediate location along the disturbance gradient depending on time since logging. In the 36 forest plots, more than 17 000 trees were measured and identified at the species level to assess the tree biodiversity. In the 44 camera traps installed for 3 months, the 4 329 detection events allowed assessing animal biodiversity. Regarding tree biodiversity, the community forests hold relatively high species richness (in contrasts to our expectations) specifically for pioneer species. Though a great part of the animal diversity is retained inside the logging concession, the Dja Reserve holds the richest and most abundant animal communities. Selective logging can thus retain a substantial part of biodiversity compared to areas entirely dedicated to protection. Finally, community forests, although defaunated and structurally disturbed, still answer the social and economical demands of the local communities. [less ▲]

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