@inproceedings{fdi:010064384,
  title = {{D}id the savannah "flourished" 3000 years ago in the so-called {S}angha {R}iver {I}nterval of the {G}uineo-{C}ongolian rainforest ? : a retrospective study using stable isotopes and phytoliths : poster},
  author = {{B}entaleb, {I}. and {F}reycon, {V}. and {G}illet, {J}.{F}. and {O}slisly, {R}ichard and {B}r{\'e}mond, {L}. and {F}avier, {C}. and {F}ontugne, {M}. and {D}roissart, {V}incent and {G}ourlet-{F}leury, {S}. and {G}uillou, {G}. and {M}artin, {C}. and {M}orin-{R}ivat, {J}. and {N}gomanda, {A}. and {S}aulieu, {G}eoffroy de and {S}ebag, {D}avid and {S}ubitani, {S}. and {W}onkam, {C}. and {N}geutchoua, {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e aim to improve our knowledge of the dynamic of the vegetation in {C}entral {A}frica during the last 5 kyrs and to discuss the main hypothesis described in the literature - humans versus climatic impacts - both suggested as responsible of the {C}ongo basin rainforest decline observed between 3 and 2.5 kyrs. {W}e use the carbon isotopic composition of well-dated {C}entral {A}frican soils to reconstruct the dynamic of the vegetation cover. {W}e will discuss the carbon isotopic composition of the soil organic carbon methodology for reconstructing palaeovegetation in the light of {R}ayleigh distillation model. {W}e showed that numerous sites exhibit a carbon isotopic ratios reflecting the {R}ayleigh distillation but few sites recorded real vegetation changes. {O}ur study suggests that the vegetation of the {G}uineo-{C}ongolian {R}egion was disturbed between 3000 and 2000 {BP} ({B}efore {P}resent) without an extreme savannah expansion. {W}e discussed the two hypotheses human versus climate impacts that may conduct to such new physiography of the vegetation. {W}e suggest that the climate hypothesis is more likely than the human impact to explain the reduction of the {G}uineo-{C}ongolian rainforest 3000 years ago.},
  keywords = {{SAVANE} ; {FORET} {DENSE} ; {DYNAMIQUE} {DE} {VEGETATION} ; {PALEOENVIRONNEMENT} ; {VARIATION} {SECULAIRE} ; {SOL} ; {CARBONE} {ORGANIQUE} ; {ANALYSE} {ISOTOPIQUE} ; {FACTEUR} {ANTHROPIQUE} ; {FACTEUR} {CLIMATIQUE} ; {CONGO} ; {GUINEE} ; {AFRIQUE} {CENTRALE}},
  numero = {17},
  pages = {{EGU}2015--5483 [1 ]},
  booktitle = {},
  year = {2015},
  ISSN = {1607-7962},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064384},
}