Diatoms and biomarkers evidence for major changes in sea ice conditions prior the instrumental period in Antarctic Peninsula

This article appears in the special issue "Sea Ice in the Paleoclimate System: the Challenge of Reconstructing Sea Ice from Proxies", which contains a set of papers addressing various sea ice proxies and their application to large scale sea ice reconstruction. It is a contribution by the Sea Ice Proxy (SIP) working group and is partly an outcome of a workshop held at GEOTOP in Montréal in March 2012.