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A Catastrophic Destruction of African Forests about 2,500 Years Ago Still Exerts a Major Influence on Present Vegetation Formations

Maley, Jean

IDS bulletin (Brighton. 1984), 2002-01, Vol.33 (1), p.13-30

Oxford, UK: Blackwell Publishing Ltd

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  • Título:
    A Catastrophic Destruction of African Forests about 2,500 Years Ago Still Exerts a Major Influence on Present Vegetation Formations
  • Autor: Maley, Jean
  • Assuntos: Africa ; Central Africa ; Climate change ; Climatic change ; Development studies ; Environment ; Flora ; Forests ; Historical perspectives ; Prehistory ; Vegetation
  • É parte de: IDS bulletin (Brighton. 1984), 2002-01, Vol.33 (1), p.13-30
  • Notas: ark:/67375/WNG-M7JKNXJB-9
    ArticleID:IDSB3
    istex:EF7ABFA044B4FC2243FC668D8463FC4FA5370E01
    The author is grateful to James Fairhead for his translation of this article from the original French, and to Melissa Leach and James Fairhead for their invitation to the IDS workshiop ‘Changing Perspectives on Forests’ in March 2001. This is Institut des Sciences de l'Evolution de Montpellier (ISEM/CNRS) contribution No. 125–2001.
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  • Descrição: A period of climatic disturbance leading to catastrophic destruction of Central African forests (the regions of south Cameroon, south Central African Republic, Gabon and Congo) occurred 2500 years BP (Before the Present). This event led either to a dramatic extension of savanna, especially in the north and south, or to an extension of pioneer vegetation. For some sites, forest re-invasion between from 2000 BP but for others it was a little later depending, perhaps, on the location of residual forests. This re-invasion still continues and although fires in peripheral savannas can slow it, forests have continued to expand over the long term. These major changes are illustrated through the history of two species for which substantial data exist: oil palm and Okoume. The huge forest disturbance is contextualised within the broader paleo-climatic framework of the recent Quaternary at the regional and global scale. The key influence is shown of marine Sea Surface Temperatures in climate change and central African monsoon. This disturbance occurred alongside relatively 'warm' regional and global conditions and could be an 'analogue' to events which might occur in Central Africa under predicted global warming. (Original abstract - amended)
  • Editor: Oxford, UK: Blackwell Publishing Ltd
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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