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Studies in the Vegetational History of S. W. Spain. II. Palynological Investigations at Laguna de las Madres, S. W. Spain

A. C. Stevenson
Journal of Biogeography
Vol. 12, No. 4 (Jul., 1985), pp. 293-314
Published by: Wiley
DOI: 10.2307/2844863
Stable URL: http://www.jstor.org/stable/2844863
Page Count: 22
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Studies in the Vegetational History of S. W. Spain. II. Palynological Investigations at Laguna de las Madres, S. W. Spain
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Abstract

Palynological investigation have been conducted at a mire site known as Laguna de las Madres, situated east of Huelva in S.W. Spain. The results provide a detailed vegetational history from approximately 4000 B.P. The Mediterranean forests which dominate the pollen spectrum, and which are composed of three basic types (Quercus, Juniperus and Pinus), demonstrate that the area had undergone various phases of dune instability and anthropogenic interference. Specifically the unstable dune phases are characterized by high Pinus values and low Quercus and Juniperus values, conveserly the more stable phases are characterized by high Quercus and Juniperus values and low Pinus values. Anthropogenic interference especially within the Quercus forest is a prominent feature of the study and at least one disturbane phase is thought to have been correlated with a period of viticulture within the catchment. This period of Vitis dominance has been dated to approximately 4480 B.P., and demonstrates that cultivation of the vine was occurring in Spain at least 1000 years before what most authors regard as the date of introduction, and corresponds to early Bronze age cultivation of the vine.

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