1. 1200 years of decadal-scale variability of Mediterranean vegetation and climate at Pantelleria Island, Italy
- Author
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Tommaso La Mantia, Willy Tinner, Paul D. Henne, Yvonne Hamann, Salvatore Pasta, Adrian Gilli, Patricia Eugster, Jacqueline F. N. van Leeuwen, Camilla Calò, Elisa Vescovi, Calò, C, Henne, PD, Eugster, P, van Leeuwen, JFN, Gilli, A, Hamann, Y, La Mantia, T, Pasta, S, Vescovi, E, and Tinner, W
- Subjects
Archeology ,Institut für Erd- und Umweltwissenschaften ,Settore AGR/05 - Assestamento Forestale E Selvicoltura ,'Little Ice Age' (LIA) ,'Medieval Warm Period' (MWP) ,Climate change ,Pinus pinaster ,Quercus pubescens ,chemistry.chemical_compound ,central Mediterranean ,central Mediterranean, fire history, ‘Little Ice Age’ (LIA), ‘Medieval Warm Period’ (MWP), Pinus pinaster, Quercus ilex, Quercus pubescens, vegetation history ,ddc:550 ,Precipitation ,vegetation history ,Earth-Surface Processes ,Global and Planetary Change ,Ecology ,biology ,Paleontology ,Sediment ,Plant community ,Vegetation ,biology.organism_classification ,Quercus ilex ,fire history ,chemistry ,Period (geology) ,Carbonate ,Institut für Geowissenschaften ,Physical geography ,Geology - Abstract
A new sedimentary sequence from Lago di Venere on Pantelleria Island, located in the Strait of Sicily between Tunisia and Sicily was recovered. The lake is located in the coastal infra-Mediterranean vegetation belt at 2 m a.s.l. Pollen, charcoal and sedimentological analyses are used to explore linkages among vegetation, fire and climate at a decadal scale over the past 1200 years. A dry period from ad 800 to 1000 that corresponds to the 'Medieval Warm Period' (WMP) is inferred from sedimentological analysis. The high content of carbonate recorded in this period suggests a dry phase, when the ratio of evaporation/precipitation was high. During this period the island was dominated by thermophilous and drought-tolerant taxa, such as Quercus ilex, Olea, Pistacia and Juniperus. A marked shift in the sediment properties is recorded at ad 1000, when carbonate content became very low suggesting wetter conditions until ad 1850-1900. Broadly, this period coincides with the 'Little Ice Age' (LIA), which was characterized by wetter and colder conditions in Europe. During this time rather mesic conifers (i.e. Pinus pinaster), shrubs and herbs (e.g. Erica arborea and Selaginella denticulata) expanded, whereas more drought-adapted species (e.g. Q. ilex) declined. Charcoal data suggest enhanced fire activity during the LIA probably as a consequence of anthropogenic burning and/or more flammable fuel (e.g. resinous Pinus biomass). The last century was characterized by a shift to high carbonate content, indicating a change towards drier conditions, and re-expansion of Q. ilex and Olea. The post-LIA warming is in agreement with historical documents and meteorological time series. Vegetation dynamics were co-determined by agricultural activities on the island. Anthropogenic indicators (e.g. Cerealia-type, Sporormiella) reveal the importance of crops and grazing on the island. Our pollen data suggest that extensive logging caused the local extinction of deciduous Quercus pubescens around ad1750. © The Author(s) 2013.
- Published
- 2013
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