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Late-Holocene climatic change recorded in sediment cores from Ellis Fjord, eastern AntarcticaInstitute of Antarctic and Southern Ocean Studies, University of Tasmania, GPO Box 252-77, Hobart 7001, Tasmania, Australia
Environment Division, Australian Nuclear Science and Technology Organization, PMB 1, Menai, NSW 2234, Australia
An analysis of diatom assemblages, Total Organic Carbon (TOC), carbon-nitrogen ratio,
Key Words: Holocene • diatoms • marine sediment cores • sea ice • climatic change • Anitarctica • Vestfold Hills
The Holocene, Vol. 11, No. 3,
291-300 (2001) This article has been cited by other articles:
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13C, biogenic silica and carboniate in two marine sediment cores from Ellis Fjord, eastern Anitarctica, reveals episodes of climatic change at 3600, 2500. 2000 and 1000 yr BP. Using the diatom data, principal component analysis, the fast-ice index (FI), benthic index (BI) and snow index (SI) (which are derived from the diatom data). a period of reduced temporal sea-ice cover is identified prior to 2500 BP. There was a large increase in sea-ice extent between 2500 and 2000 BP followed by a smaller decline. Tenmporal sea-ice extent after 2000 BP was still significantly greater than prior to 2500 BP. Both cores xvere taken from anoxic basins within the fjJord. It was found that the better preservationi allowed the recognition of taxa such as Clraetocelos vegetative cells, which are inot usually preserved. This enabled the distinction between ice-edge blooms, dominated by Fragilariopsis curta, and open-water blooms dominated by Chaeitoceros. Even though Watts Basin receives a significant summer meltwater input each year, it has not been possible to recognize this signal in the sedimiient core. 
