Biodiversity of West African Forests: An Ecological Atlas of by L. Poorter, F. Bongers, F.N'. Kouamý, Visit Amazon's W.D.

By L. Poorter, F. Bongers, F.N'. Kouamý, Visit Amazon's W.D. Hawthorne Page, search results, Learn about Author Central, W.D. Hawthorne,

The rain forests of West Africa were certain as one of many world's hotspots of biodiversity. They expand from Ghana to Senegal and are often called the higher Guinean forests. due to their remoted place, they harbor loads of infrequent and endemic animal and plant species.

This booklet makes a speciality of the biodiversity and ecology of those forests. It analyzes the standards that supply upward push to biodiversity and constitution tropical plant groups. it is usually an atlas with ecological profiles of infrequent plant species and big bushes species.

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The Boubo “forêt classée” was completely transformed in oil palm plantations. The Gô-Bodiénou block. Forest cover reduced from 196 km2 in 1958 to 227 km2 in 1990 to 67 km2 in 2000. This block has much closed broadleaf forest and was highly isolated until 1990. A large part of the block is occupied by the Gô-Bodiénou “forêt classée”. The landscape to the north of this forest is made up of numerous groves. Para-rubber tree and palm plantations have increased heavily. This “forêt classée”, along with those of Yapo and Niegré, are the three last large areas of forest in the South zone of the country.

36 At the local scale, most authors agree that soil types (which are generally distributed repeatedly along successive toposequences) are of primary importance to explain the patchy distribution of forest and savanna (Morgan & Moss 1965, Aubréville 1966, Latham & Dugerdil 1970, Adejuwon 1971, Furley 1992). Savanna inclusions are always found on sandy, phosphorus-deficient soils, or very shallow, waterlogged soils (Adjanohoun 1964). In westcentral Ghana, vegetation types were found to occupy distinct catenary positions and to be associated with characteristic soil types.

1995), summarises the respective roles of different direct and indirect factors of deforestation in Côte d’Ivoire. 9 relation (1)). ). ) have been preserved for a longer time. The indirect influences (2) of the natural environment on deforestation are hard to identify. Even on a larger scale (3) this influence is limited. An example is formed by the presence of certain savannas in the southern forest which were residuals of paleoclimates. On the contrary, forests tend to take over the savanna, at least in certain regions like the V-Baoulé in the middle of Côte d’Ivoire, (Spichiger & Blanc-Pamard 1973, Gautier 1992b, Gautier & Spichiger chapter 3).

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