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Lopez-Saez J.A.,GI Arqueobiologia | Abel-Schaad D.,GI Arqueobiologia | Perez-Diaz S.,GI Arqueobiologia | Alba-Sanchez F.,University of Granada | And 2 more authors.
Phytocoenologia | Year: 2015

A total of 75 surface samples collected from mosses in the Quercus pyrenaica forests of the Spanish Central System mountains were analysed for their pollen content. The samples were taken from six different Quercus pyrenaica phytosociological associations between 443 and 1657 m a.s.l. and fall within distinct rainfall and temperature regimes. The aims of this paper are to provide new data on the modern pollen rain from Central Spain, and to perform these data using multivariate statistics (hierarchical cluster analysis and principal component analysis) and pollen percentages. We could distinguish first between unaltered and disturbed forest landscapes and among different Quercus pyrenaica forest associations based on climatic gradients (rainfall pattern, summer moisture). This analysis allowed us to identify a set of pollen taxa markers which could assist in distinguishing these oak forest communities. © 2014 Gebrüder Borntraeger, 70176 Stuttgart, Germany.

Lopez-Saez J.A.,GI Arqueobiologia | Alba-Sanchez F.,University of Granada | Lourdes Lopez-Merino G.,GI Arqueobiologia | Perez-Diaz S.,GI Arqueobiologia
Phytocoenologia | Year: 2010

The paucity of modern pollen-rain data from the Iberian Peninsula is a significant barrier to understanding the Late Quaternary vegetation history of this globally important southwestern mediterranean region. The relationships between current vegetation, the available environmental data and modern pollen are examined in Central Spain for both natural and human-induced vegetation types, as an aid for palaeoenvironmental reconstructions. A set of 60 surface moss polsters was sampled from different vegetation and land-use types in the Madrid autonomous region, and analysed to obtain modern pollen analogues of ancient cultural landscapes. Hierarchical cluster analysis (HCA) was used to divide the main pollen taxa into two major groups and ten subgroups representing the anthropic and natural vegetation types and the main communities within them. Statistically distinctive taxa were identified using principal components analysis (PCA). The results indicate that human-influenced communities have pollen assemblages that are different from those of natural vegetation types. When modern pollen assemblages are compared, the three Holm oak (Quercus rotundifolia) communities of Madrid, representing two phytogeographical provinces and three subprovinces, are easily distinguishable by their pollen spectra. © 2010 Gebrüder Borntraeger, 70176 Stuttgart, Germany.

Alonso N.,University of Lleida | Perez Jorda G.,GI Arqueobiologia | Rovira N.,University of Montpellier 3 Paul Valery | Lopez Reyes D.,Av. del Pelag
Quaternary International | Year: 2016

The multiple archaeobotanical studies from the east Iberian Peninsula from 2800 cal.BC to 200 BC have provided around twenty wild fruit taxa of varying importance. The aim of this work is to present these taxa and analyse the most important wild fruits, some of them being cultivated since the First Iron Age. Considering sites with comparable sampling methods, a quantitative difference is not observed between wild species exploited in the several life zones represented in this synthesis: Thermo-, Meso-, Supra- and Montane-Mediterranean zones. Three taxa are common in the three life zones considered: Quercus sp., Sambucus sp. and Rubus sp. More thermophilic taxa, Ficus carica and Olea europaea, are present in the two lower zones, although their values decrease to the north we go and with height, in contrast to what happens with Vitis vinifera. The exploitation of wild resources as a food supplement, in addition to other uses, developed during the 2600 years with several differences. These differences are explained in part by the plants that grow in each of the territories and in part by the organization of the human groups and the forms of land exploitation. Protohistoric human groups would have exploited nearby resources as in the previous periods, and all data confirm the continuity of this fundamental activity. However, gathering seems to have had a fairly small economic importance when considering the low rates of ubiquity of these plants in contrast to those of staple crops. © 2015 Elsevier Ltd and INQUA.

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