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Titolo:
Vegetation response to the similar to 14.7 and similar to 11.5 ka cal. BP climate transitions: is vegetation lagging climate?
Autore:
Hoek, WZ;
Indirizzi:
Vrije Univ Amsterdam, Netherlands Ctr Geoecol Res, ICG, Dept Quaternary Geol & Geomorphol,Fac Earth Sci, NL-1081 HV Amsterdam, Netherlands Vrije UnivAmsterdam Amsterdam Netherlands NL-1081 HV erdam, Netherlands
Titolo Testata:
GLOBAL AND PLANETARY CHANGE
fascicolo: 1-2, volume: 30, anno: 2001,
pagine: 103 - 115
SICI:
0921-8181(200109)30:1-2<103:VRTTST>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANNUALLY LAMINATED SEDIMENTS; GREENLAND ICE-CORE; YOUNGER DRYAS; EARLY HOLOCENE; ENVIRONMENTAL-CHANGES; LAST TERMINATION; VARVE CHRONOLOGY; MEERFELDER MAAR; WESTERN NORWAY; NORTH-ATLANTIC;
Keywords:
Lateglacial; vegetation; palynology; climate change; the Netherlands;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
54
Recensione:
Indirizzi per estratti:
Indirizzo: Hoek, WZ Univ Utrecht, Netherlands Ctr Geoecol Res, ICG, Dept Phys Geog,Fac Geog Sci, POB 80115, NL-3508 TC Utrecht, Netherlands Univ Utrecht POB 80115 Utrecht Netherlands NL-3508 TC etherlands
Citazione:
W.Z. Hoek, "Vegetation response to the similar to 14.7 and similar to 11.5 ka cal. BP climate transitions: is vegetation lagging climate?", GLOBAL PLAN, 30(1-2), 2001, pp. 103-115

Abstract

The transition from the Last Glacial towards the Holocene is marked by tworapid increases in temperature. These climate transitions are recorded in detail in the Greenland ice-cores, and these records reveal that the climate shifts around 14.7 and 11.5 ka cal. BP seem to have occurred within a fewyears only. In this paper it is argued that vegetation did respond directly to the climatic warming round 14.7 and 11.5 ka cal. BP. The response of vegetation musts however, not be regarded as an immediate establishment of forests. It is most likely to assume that vegetation present at the moment of climatic improvement, responded by increased flowering, which thus should be reflected in the palynological record as an increased presence. These palynologicalevents occur at approximately 14.8 and 11.7 ka cal. BP, based on calibrated radiocarbon ages. From the palynological. evidence, which is available from numerous terrestrial records, the vegetation response to the climate changes seems to be quite different for both transitions. As climate remained relatively warm since the climatic improvement, forests could develop. In the early Lateglacial, it took some time for a dense forest to develop, due to both migrationallags and the delayed response of permafrost melting. For the Early Holocene, forest stands were relatively near, relict permafrost did not occur, andhence vegetation could recover quickly after the climatic improvement. (C)2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 02/04/20 alle ore 02:35:31