Palaeolimnological evidence for marked Holocene environmental changes on Signy Island, Antarctica
Lake-sediment cores from Heywood and Sombre Lakes on Signy Island (South Orkney Islands), Antarctica, have yielded a conformable radiacarbon chronology far the Holocene and a high-resolution record of environmental change. The lakes share a common climate and geology but have distinct catchments. Th...
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ARNOLD, HODDER HEADLINE PLC
2000
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ftucl:oai:eprints.ucl.ac.uk.OAI2:97122 2023-05-15T13:56:33+02:00 Palaeolimnological evidence for marked Holocene environmental changes on Signy Island, Antarctica Jones, VJ Hodgson, DA Chepstow-Lusty, A 2000-01 http://discovery.ucl.ac.uk/97122/ unknown ARNOLD, HODDER HEADLINE PLC HOLOCENE , 10 (1) 43 - 60. (2000) Antarctic Signy Island Holocene climate change palaeolimnology palaeoclimate QUATERNARY GLACIAL HISTORY SOUTH-SHETLAND-ISLANDS KING-GEORGE-ISLAND JAMES-ROSS-ISLAND DIATOM ASSEMBLAGES LAKE-SEDIMENTS CLIMATIC-CHANGE PENINSULA SEA LEVEL Article 2000 ftucl 2016-01-15T02:29:26Z Lake-sediment cores from Heywood and Sombre Lakes on Signy Island (South Orkney Islands), Antarctica, have yielded a conformable radiacarbon chronology far the Holocene and a high-resolution record of environmental change. The lakes share a common climate and geology but have distinct catchments. This provides an opportunity for using lake sediments to differentiate between local, within lake/catchment, events and those at a regional scale. Analyses of various biological and physical remains from the lakes suggest that both catchments have undergone considerable changes during the last 5700 years. Macrofossils (moss and crustacean remains) are more abundant in the late Holocene, being associated with a period of high sediment accumulation, which is related to diatom evidence for more nutrient-rich conditions at the sites. This is interpreted as a response to a Holocene 'climate optimum' at c. 3800-1300 C-14 yr BP. The record is consistent with other lake, ice and ocean core studies, although the climate optimum appears to have persisted for a longer period at Signy Island. Article in Journal/Newspaper Antarc* Antarctic Antarctica James Ross Island King George Island Ross Island Signy Island South Orkney Islands South Shetland Islands University College London: UCL Discovery Antarctic Heywood ENVELOPE(-59.683,-59.683,-62.317,-62.317) King George Island Ross Island Signy Island ENVELOPE(-45.595,-45.595,-60.708,-60.708) South Orkney Islands ENVELOPE(-45.500,-45.500,-60.583,-60.583) South Shetland Islands |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
unknown |
topic |
Antarctic Signy Island Holocene climate change palaeolimnology palaeoclimate QUATERNARY GLACIAL HISTORY SOUTH-SHETLAND-ISLANDS KING-GEORGE-ISLAND JAMES-ROSS-ISLAND DIATOM ASSEMBLAGES LAKE-SEDIMENTS CLIMATIC-CHANGE PENINSULA SEA LEVEL |
spellingShingle |
Antarctic Signy Island Holocene climate change palaeolimnology palaeoclimate QUATERNARY GLACIAL HISTORY SOUTH-SHETLAND-ISLANDS KING-GEORGE-ISLAND JAMES-ROSS-ISLAND DIATOM ASSEMBLAGES LAKE-SEDIMENTS CLIMATIC-CHANGE PENINSULA SEA LEVEL Jones, VJ Hodgson, DA Chepstow-Lusty, A Palaeolimnological evidence for marked Holocene environmental changes on Signy Island, Antarctica |
topic_facet |
Antarctic Signy Island Holocene climate change palaeolimnology palaeoclimate QUATERNARY GLACIAL HISTORY SOUTH-SHETLAND-ISLANDS KING-GEORGE-ISLAND JAMES-ROSS-ISLAND DIATOM ASSEMBLAGES LAKE-SEDIMENTS CLIMATIC-CHANGE PENINSULA SEA LEVEL |
description |
Lake-sediment cores from Heywood and Sombre Lakes on Signy Island (South Orkney Islands), Antarctica, have yielded a conformable radiacarbon chronology far the Holocene and a high-resolution record of environmental change. The lakes share a common climate and geology but have distinct catchments. This provides an opportunity for using lake sediments to differentiate between local, within lake/catchment, events and those at a regional scale. Analyses of various biological and physical remains from the lakes suggest that both catchments have undergone considerable changes during the last 5700 years. Macrofossils (moss and crustacean remains) are more abundant in the late Holocene, being associated with a period of high sediment accumulation, which is related to diatom evidence for more nutrient-rich conditions at the sites. This is interpreted as a response to a Holocene 'climate optimum' at c. 3800-1300 C-14 yr BP. The record is consistent with other lake, ice and ocean core studies, although the climate optimum appears to have persisted for a longer period at Signy Island. |
format |
Article in Journal/Newspaper |
author |
Jones, VJ Hodgson, DA Chepstow-Lusty, A |
author_facet |
Jones, VJ Hodgson, DA Chepstow-Lusty, A |
author_sort |
Jones, VJ |
title |
Palaeolimnological evidence for marked Holocene environmental changes on Signy Island, Antarctica |
title_short |
Palaeolimnological evidence for marked Holocene environmental changes on Signy Island, Antarctica |
title_full |
Palaeolimnological evidence for marked Holocene environmental changes on Signy Island, Antarctica |
title_fullStr |
Palaeolimnological evidence for marked Holocene environmental changes on Signy Island, Antarctica |
title_full_unstemmed |
Palaeolimnological evidence for marked Holocene environmental changes on Signy Island, Antarctica |
title_sort |
palaeolimnological evidence for marked holocene environmental changes on signy island, antarctica |
publisher |
ARNOLD, HODDER HEADLINE PLC |
publishDate |
2000 |
url |
http://discovery.ucl.ac.uk/97122/ |
long_lat |
ENVELOPE(-59.683,-59.683,-62.317,-62.317) ENVELOPE(-45.595,-45.595,-60.708,-60.708) ENVELOPE(-45.500,-45.500,-60.583,-60.583) |
geographic |
Antarctic Heywood King George Island Ross Island Signy Island South Orkney Islands South Shetland Islands |
geographic_facet |
Antarctic Heywood King George Island Ross Island Signy Island South Orkney Islands South Shetland Islands |
genre |
Antarc* Antarctic Antarctica James Ross Island King George Island Ross Island Signy Island South Orkney Islands South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctica James Ross Island King George Island Ross Island Signy Island South Orkney Islands South Shetland Islands |
op_source |
HOLOCENE , 10 (1) 43 - 60. (2000) |
_version_ |
1766264042318462976 |