Biotic responses to rapid warming about 14,685 yr BP: Introduction to a case study at Gerzensee (Switzerland)
The late-glacial climatic warming indicated in the Greenland ice-core record about 14,685 years before 1950 AD belongs to a type of very rapid high-amplitude warming similar the onsets of Dansgaard-Oeschger events during marine isotope stage 3 (MIS 3). In order to estimate the nature and rates of ch...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2013
|
Subjects: | |
Online Access: | https://boris.unibe.ch/106882/1/2013_PalaeogeogrPalaeocl_391_3.pdf https://boris.unibe.ch/106882/ |
id |
ftunivbern:oai:boris.unibe.ch:106882 |
---|---|
record_format |
openpolar |
spelling |
ftunivbern:oai:boris.unibe.ch:106882 2023-08-20T04:06:07+02:00 Biotic responses to rapid warming about 14,685 yr BP: Introduction to a case study at Gerzensee (Switzerland) Ammann, Brigitta von Grafenstein, Ulrich van Raden, Ulrike J. 2013-12 application/pdf https://boris.unibe.ch/106882/1/2013_PalaeogeogrPalaeocl_391_3.pdf https://boris.unibe.ch/106882/ eng eng Elsevier https://boris.unibe.ch/106882/ info:eu-repo/semantics/restrictedAccess Ammann, Brigitta; von Grafenstein, Ulrich; van Raden, Ulrike J. (2013). Biotic responses to rapid warming about 14,685 yr BP: Introduction to a case study at Gerzensee (Switzerland). Palaeogeography, Palaeoclimatology, Palaeoecology, 391(Part B), pp. 3-12. Elsevier 10.1016/j.palaeo.2013.11.006 <http://dx.doi.org/10.1016/j.palaeo.2013.11.006> 580 Plants (Botany) info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2013 ftunivbern https://doi.org/10.1016/j.palaeo.2013.11.006 2023-07-31T21:38:34Z The late-glacial climatic warming indicated in the Greenland ice-core record about 14,685 years before 1950 AD belongs to a type of very rapid high-amplitude warming similar the onsets of Dansgaard-Oeschger events during marine isotope stage 3 (MIS 3). In order to estimate the nature and rates of change of biotic responses to such a major climatic shift we need a reliable time scale as well as climatic indicators independent of the biota. Both are provided by a high-resolution oxygen-isotope record from precipitated carbonates of lake marl in Gerzensee, Switzerland (van Raden et al., 2013-this issue). On the basis of the assumption of synchronous climatic changes between Greenland and Gerzensee, the close correlation of the oxygen-isotope changes at the two sites allows the use of the NGRIP GICC05-timescale at Gerzensee (with the zero point at 1950 AD to maintain comparability with the numerous radiocarbon dates in Europe). The delta O-18-record measured in precipitated carbonates is checked and refined by the delta O-18 measured in mono-specific ostracod samples (Von Grafenstein et al., 2013-in this issue). The shift of 3.6 parts per thousand delta O-18 PDB in only about 112 years at the end of the GS-2 represents a very rapid temperature increase of at least 6.2 degrees C. This increase is confirmed by reconstructions based on transfer functions for pollen and chironomids by Lotter et al. (2012) (possibly 4-7 degrees C in the annual mean and 2-5 degrees C in summer temperatures). After this major shift the Greenland late-glacial interstadial GI-1 (corresponding to the regional biozones Bolling and Allerod) delta O-18-records of both Greenland and Gerzensee exhibit four minor fluctuations (about 1.0-1.2 parts per thousand delta O-18), of which the second and the fourth are especially clearly correlated with several of terrestrial records in the northern hemisphere. The oxygen-isotope record is used as a template for all these sediment- and bio-stratigraphies. The biotic responses may include at least five types ... Article in Journal/Newspaper Dansgaard-Oeschger events Greenland Greenland ice core ice core NGRIP BORIS (Bern Open Repository and Information System, University of Bern) Greenland Zero Point ENVELOPE(-37.150,-37.150,-54.117,-54.117) Palaeogeography, Palaeoclimatology, Palaeoecology 391 3 12 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
580 Plants (Botany) |
spellingShingle |
580 Plants (Botany) Ammann, Brigitta von Grafenstein, Ulrich van Raden, Ulrike J. Biotic responses to rapid warming about 14,685 yr BP: Introduction to a case study at Gerzensee (Switzerland) |
topic_facet |
580 Plants (Botany) |
description |
The late-glacial climatic warming indicated in the Greenland ice-core record about 14,685 years before 1950 AD belongs to a type of very rapid high-amplitude warming similar the onsets of Dansgaard-Oeschger events during marine isotope stage 3 (MIS 3). In order to estimate the nature and rates of change of biotic responses to such a major climatic shift we need a reliable time scale as well as climatic indicators independent of the biota. Both are provided by a high-resolution oxygen-isotope record from precipitated carbonates of lake marl in Gerzensee, Switzerland (van Raden et al., 2013-this issue). On the basis of the assumption of synchronous climatic changes between Greenland and Gerzensee, the close correlation of the oxygen-isotope changes at the two sites allows the use of the NGRIP GICC05-timescale at Gerzensee (with the zero point at 1950 AD to maintain comparability with the numerous radiocarbon dates in Europe). The delta O-18-record measured in precipitated carbonates is checked and refined by the delta O-18 measured in mono-specific ostracod samples (Von Grafenstein et al., 2013-in this issue). The shift of 3.6 parts per thousand delta O-18 PDB in only about 112 years at the end of the GS-2 represents a very rapid temperature increase of at least 6.2 degrees C. This increase is confirmed by reconstructions based on transfer functions for pollen and chironomids by Lotter et al. (2012) (possibly 4-7 degrees C in the annual mean and 2-5 degrees C in summer temperatures). After this major shift the Greenland late-glacial interstadial GI-1 (corresponding to the regional biozones Bolling and Allerod) delta O-18-records of both Greenland and Gerzensee exhibit four minor fluctuations (about 1.0-1.2 parts per thousand delta O-18), of which the second and the fourth are especially clearly correlated with several of terrestrial records in the northern hemisphere. The oxygen-isotope record is used as a template for all these sediment- and bio-stratigraphies. The biotic responses may include at least five types ... |
format |
Article in Journal/Newspaper |
author |
Ammann, Brigitta von Grafenstein, Ulrich van Raden, Ulrike J. |
author_facet |
Ammann, Brigitta von Grafenstein, Ulrich van Raden, Ulrike J. |
author_sort |
Ammann, Brigitta |
title |
Biotic responses to rapid warming about 14,685 yr BP: Introduction to a case study at Gerzensee (Switzerland) |
title_short |
Biotic responses to rapid warming about 14,685 yr BP: Introduction to a case study at Gerzensee (Switzerland) |
title_full |
Biotic responses to rapid warming about 14,685 yr BP: Introduction to a case study at Gerzensee (Switzerland) |
title_fullStr |
Biotic responses to rapid warming about 14,685 yr BP: Introduction to a case study at Gerzensee (Switzerland) |
title_full_unstemmed |
Biotic responses to rapid warming about 14,685 yr BP: Introduction to a case study at Gerzensee (Switzerland) |
title_sort |
biotic responses to rapid warming about 14,685 yr bp: introduction to a case study at gerzensee (switzerland) |
publisher |
Elsevier |
publishDate |
2013 |
url |
https://boris.unibe.ch/106882/1/2013_PalaeogeogrPalaeocl_391_3.pdf https://boris.unibe.ch/106882/ |
long_lat |
ENVELOPE(-37.150,-37.150,-54.117,-54.117) |
geographic |
Greenland Zero Point |
geographic_facet |
Greenland Zero Point |
genre |
Dansgaard-Oeschger events Greenland Greenland ice core ice core NGRIP |
genre_facet |
Dansgaard-Oeschger events Greenland Greenland ice core ice core NGRIP |
op_source |
Ammann, Brigitta; von Grafenstein, Ulrich; van Raden, Ulrike J. (2013). Biotic responses to rapid warming about 14,685 yr BP: Introduction to a case study at Gerzensee (Switzerland). Palaeogeography, Palaeoclimatology, Palaeoecology, 391(Part B), pp. 3-12. Elsevier 10.1016/j.palaeo.2013.11.006 <http://dx.doi.org/10.1016/j.palaeo.2013.11.006> |
op_relation |
https://boris.unibe.ch/106882/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.palaeo.2013.11.006 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
391 |
container_start_page |
3 |
op_container_end_page |
12 |
_version_ |
1774717041942462464 |