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Holocene persistence of wooded steppe in the Great Hungarian Plain.

Magyari, E. K. and Chapman, John and Passmore, D. G. and Allen, J. R. M. and Huntley, J. P. and Huntley, B. (2010) 'Holocene persistence of wooded steppe in the Great Hungarian Plain.', Journal of biogeography., 37 (5). pp. 915-935.

Abstract

Aim  We used a combination of new and previously published palaeoecological data to test three hypotheses: (1) that wooded steppe persisted in the Great Hungarian Plain throughout the Holocene; (2) that wooded steppe and steppe were most extensive between c. 9900 and 8300 cal. yr bp (the ‘Boreal steppe’ period); and (3) that Southern Continental, Pontic and Eastern Sub-Mediterranean steppe species reached the region during the early Holocene via the ‘Lower Danube Corridor’. Location  Sarló-hát oxbow lake, Hungary and the Eastern European wooded steppe zone. Methods  Holocene sediments deposited in the Sarló-hát oxbow lake were subjected to pollen and microcharcoal analyses. Twelve radiocarbon age estimates were obtained to determine sediment chronology. In addition, previously published palaeoecological data from the Great Hungarian Plain were compiled, analysed and compared with previous studies in other regions of steppe and wooded steppe in eastern Europe. Results  Palynological data from two sediment cores extending to c. 11,400 cal. yr bp indicate the persistent dominance of the landscape by temperate deciduous wooded steppe throughout the Holocene, although with varying canopy composition. Warm-continental steppe grasslands and saline tall-grass meadows developed on edaphically constrained areas, which remained steppe-dominated throughout the Holocene. The extent of steppe grasslands did not increase between 9900 and 8300 cal. yr bp. After c. 3100 cal. yr bp, anthropogenic activities led to the development of cultural steppe. Thermophilous steppe species of the Southern Continental, Pontic and Sub-Mediterranean floristic elements probably reached the Great Hungarian Plain principally via the Lower Danube Corridor during the late glacial interstadial and Holocene. Eurythermic members of these elements, however, probably survived the Last Glacial Maximum in favourable microsites, extending their ranges during the Holocene from these local sources. Main conclusions  Our results confirm the Holocene persistence of wooded steppe in the Great Hungarian Plain, disprove the ‘Boreal steppe’ theory, and suggest an Early Holocene period of greater vegetation openness between 11,400 and 9900 cal. yr bp. Evidence for the post-glacial immigration of south-eastern steppe elements into the Carpathian Basin is equivocal: the last glacial/interglacial presence of several southern steppe species suggests that the Hungarian Plain hosted suitable habitats for them during warm and cold phases alike.

Item Type:Article
Keywords:Carpathian Basin, Holocene vegetation history, Hungary, Lower Danube Corridor, Microcharcoal, Pollen analysis, Temperate wooded steppe.
Full text:Full text not available from this repository.
Publisher Web site:http://dx.doi.org/10.1111/j.1365-2699.2009.02261.x
Record Created:23 Feb 2012 12:05
Last Modified:22 May 2014 14:17

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