Climate changes and human activities recorded in the sediments of Lake Estanya (NE Spain) during the Medieval Warm Period and Little Ice Age

Abstract

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Vegetation and fire history since the last glacial maximum in an inland area of the western Mediterranean Basin (Northern Iberian Plateau, NW Spain)

“…It is around 1700 cal yrBP when local fire occurrence in Campo Lameiro caused the definitive establishment of shrublands around the study site . The period with low fire activity could be due to better control of fire by humans but more probably to cooler and more humid climate during the Little Ice Age in Spain (MartinPuertas et al, 2008;Morellon et al, 2011). Other relatively close sites show maximum fire activity for the last 2500-3000 years (Allen et al, 1996;Franco-Mugica et al, 2005;Lopez-Merino et al, 2012), in marked contrast with Ayoo record.…”

A multi-proxy perspective on millennium-long climate variability in the Southern Pyrenees

“…Reconstructed environmental variables vary from climatic parameters (temperature, precipitation) to evidence of environmental changes directly related to these parameters (changes in vegetation cover, runoff and effective moisture fluctuations reconstructed by lake level changes and/or salinity fluctuations). We consider this transect of multi-proxy reconstructions of climatic and environmental changes to represent the best strategy to discern between climate and human forcings in landscape changes, as demonstrated in previous research carried out in this area Morellón et al, 2011;Rull et al, 2011).…”

Lipid biomarkers in Lake Enol (Asturias, Northern Spain): Coupled natural and human induced environmental history

“…These findings could be linked to the climatic conditions that occurred during the Little Ice Age (L1A), which is widely believed to have ended around the second half of the 19th century Oones et al, 2001Oones et al, , 2009, when humidity increased Martín-Puertas et al, 2008Morellón et al, 2009Morellón et al, , 2012Nieto-Moreno et al, 2011), producing greater runoff and therefore an increase in OM input. Moreover, cold conditions could have inhibited bacterial activity and diagenesis of OM (d. Zheng et al, 2007).…”