“…In the Iberian Peninsula, numerous Late Holocene lake sequences have been analysed in a variety of geographic, climatic and ecologic settings ( Julià et al, 1998;Luque & Julià, 2002;Pla & Catalan, 2005;Moreno et al, 2008Moreno et al, , 2009Martín-Puertas et al, 2009;López-Merino et al, 2011;Morellón et al, 2011;Corella et al, 2012;Currás et al, 2012;Höbig et al, 2012)using a variety of geological (facies, geochemistry) and biological (pollen, ostracods, diatoms, quironomids) proxies Martín-Puertas et al, 2009;Morellón et al, 2011;Corella et al, 2012;Currás et al, 2012;Höbig et al, 2012). Diatom studies have demonstrated large environmental changes in Iberian lakes during the last 2000 years in water depth, salinity and trophic status: Laguna de Medina (Reed et al, 2001), Sanabria (Luque and Julià, 2002), Enol ( López-Merino et al, 2011), La Cruz (Julià et al, 1998;Kiss et al, 2007), Arreo , Montcortès (Scussolini et al, 2011), Estanya (Riera et al, 2004), Estany Redon (Plá and Catalán, 2005), Zoñar and Lagoa Grande (Reed, 1998;Leira, 2005). The available records show that Iberian lake dynamics responded primarily to changes in hydrology, with relatively humid conditions coinciding with the Iberian-Roman Period (IRHP, 650 BC-350 AD;, early Middle Ages (Dark Ages, DA, 500-900 AD; Moreno et al, 2012) and the LIA (1300-1850 AD; Morellón et al, 2011).…”