Climatic variability and human impact during the last 2000 years in western Mesoamerica: evidence of late Classic (AD 600–900) and Little Ice Age drought events

An article from the special issue "Climate change and human impact in Central and South America over the last 2000 years", which is a contribution to the LOTRED-SA Working Group. It emerged from the PAGES-supported meeting: "LOTRED-SA 3rd Symposium: Climate change and human impact in Central and South America over the last 2000 years: Oberservations and models" held in Medellín, Colombia from 9-12 July 2014.