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La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Vegetation and climate in the west Mediterranean area at the lower Pliocene (5.32-5 ma) deduced from pollen data (1998)
Auteurs :	Séverine Fauquette, Auteur ; Jean-Pierre Suc, Auteur ; Joel Guiot, Auteur ; Filomena Diniz, Auteur ; Najat Feddi, Auteur ; Zhuo Zheng, Auteur ; Ezzedine Bessais, Auteur ; Androniki Drivaliari, Auteur
Type de document :	Article
Dans :	Ecologia Mediterranea (24(1) 1998)
Article en page(s) :	89-100
Résumé :	The method of climatic quantification carried out especially for the Pliocene is now applied to 10 Pliocene pollen sequences around the West Mediterranean area. The latitudinal gradient observed through pollen data is confirmed by the climatic reconstructions: there is a gradient from North to South both for temperatures and precipitation. At the beginning of the Pliocene (5.325 Ma), the climate was warm and humid, respectively 1 to 4degreeC and 400 to 700 mm higher than today, in mean, in the North Mediterranean area but warm and dry, respectively equal or 5degreeC higher and drier than today or equal, in the South Mediterranean area. In the way to propose to climate modelers good boundary conditions, using the results of the climatic estimations, a biome reconstruction has been realised, allowing to identify three biomes: the broad-leaved evergreen/warm mixed forest, the xerophytic wood/shrub biome and the warm grass/shrub biome which are still represented today in the Mediterranean region in spite of differences in temperatures and precipitation.

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