Indication of colder condition within Holocene period in a freshwater lake in Vestfold Hills area, East Antarctica region

摘要

We represent Paleoenvironmetal condition of Vestfold Hills region, based on the relative abundance of a single diatom species Fragilariopsis curta, a dominating sea-ice taxon. Increase in relative abundance of F. curta in a core from Vestfold Hills representing Holocene climatic history before 3820 years BP and 5560 year BP indicates the prevalence of colder climatic conditions, as this species is known to prefer the icier condition to thrive.