Late holocene environments in Las Tablas de Daimiel (south central
Iberian peninsula, Spain)
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Publication date
2007
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Springer Science Business Media
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Abstract
The use of a high resolution pollen record in
combination with geochemical data from sediments composed
mainly of layers of charophytes alternating with layers
of vegetal remains plus some detrital beds permits the
reconstruction of the environmental evolution of the last
3000 years in an inland wetland of the Mediterranean domain,
thus introducing a new climatic dataset for the Late
Holocene. Hydrological fluctuations, reflected in the relationship
between emerged and aquatic vegetation and
inorganic and organic C and N changes, can be related
to aridity or humid phases, while relations among arboreal
taxa (Quercus and Pinus) and Artemisia are used as temperature
indicators. Five climatic periods have been identified:
a Subatlantic Cold Period (<150 b.c.), cold and arid; the
RomanWarm Period (150 b.c.–a.d. 270), warmer and wetter;
the Dark Ages (a.d. 270–a.d. 950), colder and drier;
the Medieval Warm Period (a.d. 950–a.d. 1400), warmer
and wetter; and the Little Ice Age (>a.d. 1400) indicated
by a cooling and drying trend. Despite the lack of any direct
evidence of human action, there are some episodes related
to deforestation during the Reconquista (Middle Ages) that
mask the real climatic signal.
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