Boreskov

PP‐44DYNAMICS OF CARPINUS BETULUS L. AREA ON A LATE GLACIER PERIODAND HOLOCENE IN EAST EUROPEAvdeeva E.F.Severtsov Institute of Ecology and Evolution, Moscow, RussiaThe traditional problem of ecology and geography is researching of influence ofpaleoclimate variability on a plant migration. The paleogeography aspect is the mostdeveloped. It includes reconstruction of plant area for different time interval (Post, 1926;Huntley, Birks, 1983; Grichuk, 1989 et al.) and paleoclimat conditions through the plant structure(Bruks, 1952; Webb, 1971; Velichko, 1973 et al.). The less developed direction is reconstruction ofplant dynamics according to self‐development and variable environmental conditions.Paleopalinology databases weren’t developed for East Europe before. We developeddatabase “PALEO” based on published information (most of paleopalinology literature after1940) (Kozharinov, 1993).Area of Carpinus betulus L. occupies Europe part of Russia, the Baltic states, Belarus,Ukraine. Researches of climate determination of area Carpinus betulus L. show dependencebetween hornbeam expansion and climatic factors (Kozharinov, 1989).According to maps of Carpinus betulus L. paleoareas, his becoming dated 12000 – 12500y.a. and connected with Volynskaya highland (up to our time).Volynskiy center was clear registered up to 10000 y.a., then near by 9500 y.a.Kaliningradskiy, Polskiy, Karpatskiy and Kodry centres were activated. Area’s configurationhas saved stable through 1000 years up to 8500 y.a., when pollen of Carpinus betulus L. isdetected near Vidzemskaya and Podolskaya highlands. Carpinus betulus L. becoming isregistered near Sudomskaya and Bezhanitskaya highlands up to 8000 y.a. In Meschera’s peatprofiles Carpinus betulus L. becoming near by 7500 y.a. The north board of Carpinus betulusL. expansion goes through 57 °N. By the time hornbeam occupied the territory of Ukraineforming forests.Through 5000 y.a. Carpinus betulus L. was registered near by coast of Baltic Sea. Wesuggest “baltic” migration passage was the main for the most of broadleaf species expanseto the north‐west. Single pollen of Carpinus betulus L. were registered at North‐East ofEurope. The “zero” zone (where hornbeam wasn’t registered) is wide and divided the mainarea (where pollen was detected in every alternative peat profiles). Carpinus betulus L.212