Article (Scientific journals)
Messinian vegetation maps of the Mediterranean region using models and interpolated pollen data
Favre, Eric; François, Louis; Fluteau, Frederic et al.
2007In Geobios, 40 (3), p. 433-443
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Keywords :
Messinian; Mediterranean region; palaeovegetation mapping
Abstract :
[en] This study proposes to compare the outputs from the CARAIB vegetation model forced by results from the LMD General Circulation Model with interpolated pollen data (Kriging method) from the Mediterranean region during the Messinian. The vegetation maps that have been obtained represent distinct phases of the salinity crisis: before the crisis and during the marginal evaporitic phase (interpolated map), and during the complete desiccation phase (simulated map). However, they are comparable in terms of vegetation density and agree on a strong contrast between the Northern (forest vegetation) and Southern (open vegetation) Mediterranean regions. Main differences concern the type of forests in the northern Mediterranean region, which are explained by discrepancies between precipitation amount predicted by the model and that calculated by a transfer function using pollen records. The interpolation method has been successfully tested in France using interpolated current pollen records by comparison with the present-day potential vegetation map. The resulting Messinian map is useful to validate or improve model simulation which does not take into account the depth of the Mediterranean Basin when it dried up. The Southern Mediterranean landscapes were open, with a steppe-like vegetation to the West and a savannah-like vegetation to the East. Forests prevailed to the North, organized in a mosaic system mainly controlled by relief. Such a contrast provides some explanation of the large number of deep fluvial canyons cut on the Northern margin at opposed to the South during the Mediterranean desiccation. (C) 2007 Elsevier Masson SAS. All rights reserved.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Favre, Eric ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Modélisation du climat et des cycles biogéochimiques
François, Louis  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Modélisation du climat et des cycles biogéochimiques
Fluteau, Frederic;  Université Denis-Diderot – Paris 7 > Institut de physique du Globe de Paris (UMR 7154 CNRS)
Cheddadi, Rachid;  Université de Montpellier II > Institut des sciences de l’e´volution (UMR 5554 CNRS)
Thevenod, Lysiane;  Université Lyon 1 > UMR 5125 PEPS CNRS
Suc, Jean-Pierre;  Université Lyon 1 > UMR 5125 PEPS CNRS
Language :
English
Title :
Messinian vegetation maps of the Mediterranean region using models and interpolated pollen data
Alternative titles :
[en] Cartes de végétation de la région méditerranéenne au Messinien d’après les modèles et les données polliniques interpolées
Publication date :
2007
Journal title :
Geobios
ISSN :
0016-6995
eISSN :
1777-5728
Publisher :
Elsevier Science, Paris, France
Volume :
40
Issue :
3
Pages :
433-443
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 12 May 2010

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