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Verfasst von:Beaulieu, Jacques-Louis de [VerfasserIn]   i
 Wulf, Sabine [VerfasserIn]   i
Titel:Lateglacial-Holocene abrupt vegetation changes at Lago Trifoglietti in Calabria, Southern Italy
Titelzusatz:The setting of ecosystems in a refugial zone
Verf.angabe:Jacques-Louis de Beaulieu, Elisabetta Brugiapaglia, Sébastien Joannin, Frédéric Guiter, Giovanni Zanchetta, Sabine Wulf, Odile Peyron, Liliana Bernardo, Julien Didier, Agnès Stock, Damien Rius, Michel Magny
E-Jahr:2017
Jahr:12 January 2017
Umfang:14 S.
Fussnoten:Available online 12 January 2017 ; Gesehen am 20.08.2018
Titel Quelle:Enthalten in: Quaternary science reviews
Ort Quelle:Amsterdam [u.a.] : Elsevier, 1982
Jahr Quelle:2017
Band/Heft Quelle:158(2017), Seite 44-57
ISSN Quelle:0277-3791
Abstract:Retrospective science such as palaeoecology deeply depends on the preservation of archives in sensitive places. As an example, mountains of medium altitude from Mediterranean peninsulas have long been identified by biogeographers as refuges zones allowing the survival of European temperate taxa during the ice ages, but archives to validate this hypothesis are scarce, especially in Southern Italy. Here we present a new sequence from Lago Trifoglietti (1048 m a.s.l.) in the Calabrian Mountains, which covers the Late Glacial Interstadial (LGI, corresponding to the Bo€lling-Allero€d period in northern-central Europe) and the transition to the Holocene. The independent chronology based on seven radiocarbon dates is supported by the evidence of three tephra layers already identified in other regional sequences. During the LGI, besides the high diversity of non arboreal pollen grains, a great number of pollens of temperate forest trees are present or abundant (mostly deciduous oaks and fir). These assemblages suggest that the site was above but not far from the upper limit of diversified woodland stands. They confirm a local survival during the last glacial. The Younger Dryas is not marked by major changes, and oak percentages are even higher, suggesting a resilient expansion at lower altitude. Surprisingly the site remains above the timberline until an aridity crisis centered at 11,100 cal 14C yr PB, which is correlated with the Preboreal Oscillation (PBO). This event is immediately followed by the local settlement of a dense fir and beech forest around the lake. A comparison with other Italian key sequences aims at explaining the climate forcing factors that governed this original vegetation dynamic. Further investigations using additional proxies are needed for a more robust climate reconstruction.
DOI:doi:10.1016/j.quascirev.2016.12.013
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext ; Verlag: http://dx.doi.org/10.1016/j.quascirev.2016.12.013
 Volltext: https://linkinghub.elsevier.com/retrieve/pii/S0277379116307053
 DOI: https://doi.org/10.1016/j.quascirev.2016.12.013
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1580197817
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