Analyse pollinique de niveaux sapropéliques post-glaciaires dans une carotte en Méditerranée Orientale
1971; Elsevier BV; Volume: 11; Issue: 3-4 Linguagem: Francês
10.1016/0034-6667(71)90004-2
ISSN1879-0615
AutoresMartial Rossignol, L. Pastouret,
Tópico(s)Lichen and fungal ecology
ResumoPost-Glacial sapropelic muds in a deep-sea Mediterranean core, offshore Crete, reveal an abundant pollen content, supposedly coming from the nearby island. Above a littoral zone of herbaceous vegetation, the pollen spectrum suggests a dense Mediterranean forest cover, with Pinus and Quercus dominating, but with quite a few balkano-caucasian trees—Tilia, Liquidambar, Ostrya, Alnus, Betula, Corylus, Carpinus, Zelkova, cf. Pterocarya, cf. Engelhardia (which have now all disappeared from the island,, except Zelkova and Carpinus and Cedrus, now also extinct, whose closest present-day occurrences are in Lebanon, Cypus and Morocco. These rich flora and dense vegetal cover do not necessarily imply a more humid climate than today; the present rainfall is sufficient for these species in convenient locations; rather, it points to the devastation of the vegetation by man and goat in the Mediterranean area for 8,000 years. Les boues sapropéliques post-glaciaires d'une carotte marine en Méditerranée orientale, au sud-est de l'île de Crète, recèlent une grande abondance de grains de pollen, qui viennent probablement en partie de l'île voisine. Le spectre pollinique suggère, au-dessus d'une zone littorale herbacée, une forêt méditerranéenne humide et dense: Pinus et Quercus y dominent, mais on trouve aussi un nombre appréciable d'arbres balkano-caucasiens, Tilia, Liquidambar, Ostrya, Almus, Betula, Corylus, Carpinus, Zelkova, Ze. Ptercorya, cf. Engelhardtia, aujourd'hui disparus de l'île, sauf Zelkova et Carpinus; Cedrus, lui aussi présent dans les sapropèles, ne se trouve plus aujourd'hui qu'au Liban, en Chypre et au Maroc.
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