Reference : How closely are Pericopsis elata (Fabaceae) patches linked to past human disturbances...
Scientific congresses and symposiums : Unpublished conference/Abstract
Arts & humanities : Archaeology
Life sciences : Phytobiology (plant sciences, forestry, mycology...)
http://hdl.handle.net/2268/154081
How closely are Pericopsis elata (Fabaceae) patches linked to past human disturbances in South-Eastern Cameroon
English
Bourland, Nils mailto [Université de Liège - ULiège > Forêts, Nature et Paysage > Laboratoire de Foresterie des régions trop. et subtropicales >]
Cerisier, François [> >]
Daïnou, Kasso mailto [Université de Liège - ULiège > Forêts, Nature et Paysage > Gestion des ressources forestières et des milieux naturels >]
Livingstone Smith, Alexandre [Musée royal de l'Afrique centrale > > > >]
Hubau, Wannes [> >]
Brostaux, Yves mailto [Université de Liège - ULiège > Sciences agronomiques > Statistique, Inform. et Mathém. appliquée à la bioingénierie >]
Feteke, Fousseni mailto [Université de Liège - ULiège > > > Doct. sc. agro. & ingé. biol.]
Morin-Rivat, Julie mailto [Université de Liège - ULiège > Forêts, Nature et Paysage > Laboratoire de Foresterie des régions trop. et subtropicales >]
Gillet, Jean-François mailto [Université de Liège - ULiège > > > Doct. sc. agro. & ingé. biol.]
Lejeune, Philippe mailto [Université de Liège - ULiège > Forêts, Nature et Paysage > Gestion des ressources forestières et des milieux naturels >]
Doucet, Jean-Louis [Université de Liège - ULiège > Forêts, Nature et Paysage > Laboratoire de Foresterie des régions trop. et subtropicales >]
26-Jun-2013
Yes
No
International
ATBC - OTS 50th Anniversary Meeting
23-28 juin 2013
San José
Costa Rica
[en] Tropical ecology ; Cameroon ; Central Africa ; Disturbances ; Human impact ; Human settlement ; Soil charcoal ; Soil analyses ; Pericopsis elata ; CITES
[en] Studies conducted in the Congo Basin forests concluded that soil parameters and large disturbances induced by human activities since 3000–2000 BP could be the main driver for the persistence of long lived light-demanding tall tree species. Today most of the timber species belong to this group, among them Pericopsis elata (Fabaceae). Like many other light-demanding trees, this species suffers from important regeneration problems. While the conditions for its establishment must have been met in the past, they obviously have become unfavourable. Because of ongoing logging activities and a natural decline of its populations, this species is recorded in both the IUCN Red List and the CITES Appendix II listings. Our goal was to investigate the roles of both pedological and anthropogenic factors in the persistence of forest patches characterized by this clustered species. Soil surveys, botanical inventories and anthracological excavations were conducted in three different forest sites located in south-eastern Cameroon. P. elata patches (3.3-14.7 ha) were studied and compared to their close surroundings. No statistical differences were observed between the results of botanical inventories conducted inside and outside the patches (Morisita-Horn indices from 0.69-0.77). Soils only differed in Fe content, but otherwise no significant differences could be observed. Charcoal is widespread and abundant in study sites, mostly inside the patches. Charcoal radiocarbon dating (2,150-195 BP) was consistent with decoration techniques of archaeological materials that we discovered. The average age of P. elata individuals coincides with fire events that occurred in a region where fires rarely occur naturally. We present evidence of past anthropogenic disturbances (human settlement, slash-and-burn cultivation) in the Congolese mixed moist semi-evergreen forest in south-eastern Cameroon. We discuss the potential influence of our findings on the management of light-demanding tall trees populations in a context of logging activities.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/154081

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