Arid and humid phases in central Italy during the Late Pleistocene revealed by the Lake Trasimeno ostracod record
A multiproxy approach in a sediment core from Lake Trasimeno has been used to reconstruct the climate history of central Italy during the Late Pleistocene to Early Holocene period (ca. 47,000-9,000 cal yr B.P.). Ostracod assemblages and sedimentological data (lithology and carbonate content) have be...
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ftubkoeln:oai:USBKOELN.ub.uni-koeln.de:19881 2023-05-15T16:29:30+02:00 Arid and humid phases in central Italy during the Late Pleistocene revealed by the Lake Trasimeno ostracod record Marchegiano, Marta Francke, Alexander Gliozzi, Elsa Ariztegui, Daniel 2018 https://kups.ub.uni-koeln.de/19881/ eng eng ELSEVIER Marchegiano, Marta, Francke, Alexander orcid:0000-0002-0370-5802 , Gliozzi, Elsa orcid:0000-0001-5608-1995 and Ariztegui, Daniel (2018). Arid and humid phases in central Italy during the Late Pleistocene revealed by the Lake Trasimeno ostracod record. Paleogeogr. Paleoclimatol. Paleoecol., 490. S. 55 - 70. AMSTERDAM: ELSEVIER. ISSN 1872-616X ddc:no doc-type:article publishedVersion 2018 ftubkoeln 2022-11-09T07:17:28Z A multiproxy approach in a sediment core from Lake Trasimeno has been used to reconstruct the climate history of central Italy during the Late Pleistocene to Early Holocene period (ca. 47,000-9,000 cal yr B.P.). Ostracod assemblages and sedimentological data (lithology and carbonate content) have been used to infer past hydrological changes in the area. Ostracods were analyzed throughout the core using diversity indexes and multi-variate statistic analyses (Cluster and PCA). Three main associations linked to lake level and salinity variations were recognized: 1) the C. torosa association, indicating permanent lacustrine conditions with high lake levels and low salinities; 2) the S. aculeata association, linked to very shallow/temporary waters with higher salinity conditions; and 3) the S. aculeata-E. mareotica association pointing to temporary water conditions and the highest salinities. Furthermore, the presence of C. fuscata and L. blankenbergensis during wide parts of the Late Pleistocene indicates temperatures lower than present days. Alternations of these three ostracod associations compares well with the oxygen isotope curve from Greenland (NGRIP) and are thus interpreted as climatically driven. At the Holocene transition (Termination 1), the ostracod associations indicate a delay in the increasing warming and humidity with respect to the NGRIP temperature record. Article in Journal/Newspaper Greenland NGRIP Cologne University: KUPS Greenland High Lake ENVELOPE(-110.849,-110.849,67.386,67.386) |
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Cologne University: KUPS |
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language |
English |
topic |
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ddc:no Marchegiano, Marta Francke, Alexander Gliozzi, Elsa Ariztegui, Daniel Arid and humid phases in central Italy during the Late Pleistocene revealed by the Lake Trasimeno ostracod record |
topic_facet |
ddc:no |
description |
A multiproxy approach in a sediment core from Lake Trasimeno has been used to reconstruct the climate history of central Italy during the Late Pleistocene to Early Holocene period (ca. 47,000-9,000 cal yr B.P.). Ostracod assemblages and sedimentological data (lithology and carbonate content) have been used to infer past hydrological changes in the area. Ostracods were analyzed throughout the core using diversity indexes and multi-variate statistic analyses (Cluster and PCA). Three main associations linked to lake level and salinity variations were recognized: 1) the C. torosa association, indicating permanent lacustrine conditions with high lake levels and low salinities; 2) the S. aculeata association, linked to very shallow/temporary waters with higher salinity conditions; and 3) the S. aculeata-E. mareotica association pointing to temporary water conditions and the highest salinities. Furthermore, the presence of C. fuscata and L. blankenbergensis during wide parts of the Late Pleistocene indicates temperatures lower than present days. Alternations of these three ostracod associations compares well with the oxygen isotope curve from Greenland (NGRIP) and are thus interpreted as climatically driven. At the Holocene transition (Termination 1), the ostracod associations indicate a delay in the increasing warming and humidity with respect to the NGRIP temperature record. |
format |
Article in Journal/Newspaper |
author |
Marchegiano, Marta Francke, Alexander Gliozzi, Elsa Ariztegui, Daniel |
author_facet |
Marchegiano, Marta Francke, Alexander Gliozzi, Elsa Ariztegui, Daniel |
author_sort |
Marchegiano, Marta |
title |
Arid and humid phases in central Italy during the Late Pleistocene revealed by the Lake Trasimeno ostracod record |
title_short |
Arid and humid phases in central Italy during the Late Pleistocene revealed by the Lake Trasimeno ostracod record |
title_full |
Arid and humid phases in central Italy during the Late Pleistocene revealed by the Lake Trasimeno ostracod record |
title_fullStr |
Arid and humid phases in central Italy during the Late Pleistocene revealed by the Lake Trasimeno ostracod record |
title_full_unstemmed |
Arid and humid phases in central Italy during the Late Pleistocene revealed by the Lake Trasimeno ostracod record |
title_sort |
arid and humid phases in central italy during the late pleistocene revealed by the lake trasimeno ostracod record |
publisher |
ELSEVIER |
publishDate |
2018 |
url |
https://kups.ub.uni-koeln.de/19881/ |
long_lat |
ENVELOPE(-110.849,-110.849,67.386,67.386) |
geographic |
Greenland High Lake |
geographic_facet |
Greenland High Lake |
genre |
Greenland NGRIP |
genre_facet |
Greenland NGRIP |
op_relation |
Marchegiano, Marta, Francke, Alexander orcid:0000-0002-0370-5802 , Gliozzi, Elsa orcid:0000-0001-5608-1995 and Ariztegui, Daniel (2018). Arid and humid phases in central Italy during the Late Pleistocene revealed by the Lake Trasimeno ostracod record. Paleogeogr. Paleoclimatol. Paleoecol., 490. S. 55 - 70. AMSTERDAM: ELSEVIER. ISSN 1872-616X |
_version_ |
1766019203267035136 |