A late Holocene record of arid events from the Cuzco region, Peru
The small recently infilled lake basin of Marcacocha (1313 S, 7212 W, 3355 m) in the Cuzco region of Peru has a morphology and location that renders it extremely sensitive to environmental change. A record of vegetation, human impact and climatic change during the last 4200 years has been obtained f...
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ftunivsussexfig:oai:figshare.com:article/23320556 2023-06-18T03:41:10+02:00 A late Holocene record of arid events from the Cuzco region, Peru Alex Chepstow-Lusty Mick Frogley Brian S Bauer Mark B Bush Alfredo Tupayachi Herrera 2003-01-01T00:00:00Z https://figshare.com/articles/journal_contribution/A_late_Holocene_record_of_arid_events_from_the_Cuzco_region_Peru/23320556 unknown 10779/uos.23320556.v1 https://figshare.com/articles/journal_contribution/A_late_Holocene_record_of_arid_events_from_the_Cuzco_region_Peru/23320556 Copyright not evaluated Uncategorised value Text Journal contribution 2003 ftunivsussexfig 2023-06-07T23:31:07Z The small recently infilled lake basin of Marcacocha (1313 S, 7212 W, 3355 m) in the Cuzco region of Peru has a morphology and location that renders it extremely sensitive to environmental change. A record of vegetation, human impact and climatic change during the last 4200 years has been obtained from a highly organic core taken from the centre of the basin. Sustained arid episodes that affected the Peruvian Andes may be detectable using the proxy indicator of sedge (Cyperaceae) pollen abundances. As the lake level was lowered during sustained drier conditions, the local catchment was colonized by Cyperaceae, while during lake floods, they retreated or were submerged and pollen production was correspondingly reduced. Drier episodes during prehistoric times occurred around 900 B.C., 500 B.C., A.D. 100 and A.D. 550, with a longer dry episode occurring from A.D. 900-1800. Evidence from the independently derived Quelccaya ice core record and the archaeological chronology for the Cuzco region appears to support the climatic story derived from the sedge data. Many of these aridity episodes appear to correspond with important cultural changes in the Cuzco region and elsewhere in the Central Andes. Article in Journal/Newspaper ice core University of Sussex: Figshare |
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University of Sussex: Figshare |
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Uncategorised value Alex Chepstow-Lusty Mick Frogley Brian S Bauer Mark B Bush Alfredo Tupayachi Herrera A late Holocene record of arid events from the Cuzco region, Peru |
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Uncategorised value |
description |
The small recently infilled lake basin of Marcacocha (1313 S, 7212 W, 3355 m) in the Cuzco region of Peru has a morphology and location that renders it extremely sensitive to environmental change. A record of vegetation, human impact and climatic change during the last 4200 years has been obtained from a highly organic core taken from the centre of the basin. Sustained arid episodes that affected the Peruvian Andes may be detectable using the proxy indicator of sedge (Cyperaceae) pollen abundances. As the lake level was lowered during sustained drier conditions, the local catchment was colonized by Cyperaceae, while during lake floods, they retreated or were submerged and pollen production was correspondingly reduced. Drier episodes during prehistoric times occurred around 900 B.C., 500 B.C., A.D. 100 and A.D. 550, with a longer dry episode occurring from A.D. 900-1800. Evidence from the independently derived Quelccaya ice core record and the archaeological chronology for the Cuzco region appears to support the climatic story derived from the sedge data. Many of these aridity episodes appear to correspond with important cultural changes in the Cuzco region and elsewhere in the Central Andes. |
format |
Article in Journal/Newspaper |
author |
Alex Chepstow-Lusty Mick Frogley Brian S Bauer Mark B Bush Alfredo Tupayachi Herrera |
author_facet |
Alex Chepstow-Lusty Mick Frogley Brian S Bauer Mark B Bush Alfredo Tupayachi Herrera |
author_sort |
Alex Chepstow-Lusty |
title |
A late Holocene record of arid events from the Cuzco region, Peru |
title_short |
A late Holocene record of arid events from the Cuzco region, Peru |
title_full |
A late Holocene record of arid events from the Cuzco region, Peru |
title_fullStr |
A late Holocene record of arid events from the Cuzco region, Peru |
title_full_unstemmed |
A late Holocene record of arid events from the Cuzco region, Peru |
title_sort |
late holocene record of arid events from the cuzco region, peru |
publishDate |
2003 |
url |
https://figshare.com/articles/journal_contribution/A_late_Holocene_record_of_arid_events_from_the_Cuzco_region_Peru/23320556 |
genre |
ice core |
genre_facet |
ice core |
op_relation |
10779/uos.23320556.v1 https://figshare.com/articles/journal_contribution/A_late_Holocene_record_of_arid_events_from_the_Cuzco_region_Peru/23320556 |
op_rights |
Copyright not evaluated |
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1769006631325007872 |