Reference : Identification of charred botanical remains provides more accurate information on pas...
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http://hdl.handle.net/2268/195444
Identification of charred botanical remains provides more accurate information on past history in Central Africa
English
Morin, Julie mailto [Université de Liège - ULiège > > > Form. doct. sc. agro. & ingé. biol.]
Biwolé, Achille [Université de Liège - ULiège > > > >]
Bourland, Nils [Musée royal de l'Afrique centrale > > > >]
Bremond, Laurent [EPHE > > > >]
Fayolle, Adeline mailto [Université de Liège > Ingénierie des biosystèmes (Biose) > Gestion des ressources forestières et des milieux naturels >]
Gillet, Jean-François [Nature Forest Environment > > > >]
Gorel, Anaïs mailto [Université de Liège > Ingénierie des biosystèmes (Biose) > Gestion des ressources forestières et des milieux naturels >]
Gourlet-Fleury, Sylvie [CIRAD > > > >]
Hardy, Olivier [Université Libre de Bruxelles - ULB > > > >]
Livingstone Smith, Alexandre [Musée royal de l'Afrique centrale > > > >]
Oslisly, Richard [IRD > > > >]
Vleminckx, Jason [Université Libre de Bruxelles - ULB > > > >]
Doucet, Jean-Louis mailto [Université de Liège > Ingénierie des biosystèmes (Biose) > Laboratoire de Foresterie des régions trop. et subtropicales >]
Beeckman, Hans [Musée royal de l'Afrique centrale > > > >]
30-Jan-2015
A0
No
No
National
20th National Symposium for Applied Biological Sciences
30 January 2015
UCL
Louvain-la-Neuve
Belgium
[en] central Africa ; Cameroon ; Republic of the Congo ; charcoal analysis ; charcoal identification ; paleoenvironment ; tropical forests ; tropical Africa ; radiocarbon ; Holocene
[en] In palaeoenvironmental studies, charred botanical remains have rarely been identified to the species level before being sent to radiocarbon dating. Moreover, the age of most tropical spp. and thereby the age of the carbon sequestered during plant growth is not known. Dating unidentified charred wood in the tropics should be thus treated with caution because the accuracy of the dates is not guaranteed. Here we present 71 dates obtained on charred endocarps and wood charcoals sampled in soil pits in Cameroon and in the Rep. of the Congo. We taxonomically identified 43 samples then selected both identified and unidentified individual fragments for radiocarbon dating. We performed summed probability distributions of the dates calibrated in BP for the 43 identified and the 28 unidentified samples separately then for the whole dates. Results showed that the dates obtained on unidentified samples better fit the established chronology for Central Africa but that they also presented less precise standard deviations than the dates obtained on identified short-lived material, and that the dates on identified samples provide more detailed trends about the phases of human occupation in Central Africa after 2,500 BP. We can assume that dating unidentified material may introduce some blur into chronologies and that the selection of identified charred botanical remains should be systematically applied for palaeoenvironmental reconstructions in tropical contexts to refine the chronologies.
FRIA - Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture ; FRFC - Fonds de la Recherche Fondamentale Collective ; F.R.S.-FNRS - Fonds de la Recherche Scientifique
Researchers ; Professionals ; Students ; General public
http://hdl.handle.net/2268/195444

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