Arctic Siberia: Modern pollen dataset and pollen spectra changes over the last 7,000 years from a lacustrine sediment core (southern Taymyr region)
Palaeoecological investigations in the larch forest-tundra ecotone in northern Siberia have the potential to reveal Holocene environmental variations, which likely have consequences for global climate change because of the strong high-latitude feedback mechanisms. A sediment core, collected from a s...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.848292 2023-05-15T15:12:26+02:00 Arctic Siberia: Modern pollen dataset and pollen spectra changes over the last 7,000 years from a lacustrine sediment core (southern Taymyr region) Klemm, Juliane Herzschuh, Ulrike Pestryakova, Luidmila A MEDIAN LATITUDE: 71.350829 * MEDIAN LONGITUDE: 115.920256 * SOUTH-BOUND LATITUDE: 67.443000 * WEST-BOUND LONGITUDE: 97.649170 * NORTH-BOUND LATITUDE: 73.387090 * EAST-BOUND LONGITUDE: 161.773350 * DATE/TIME START: 2006-07-14T13:00:00 * DATE/TIME END: 2011-08-14T00:00:00 2016-07-18 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.848292 https://doi.org/10.1594/PANGAEA.848292 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.848292 https://doi.org/10.1594/PANGAEA.848292 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Klemm, Juliane; Herzschuh, Ulrike; Pestryakova, Luidmila A (2016): Vegetation, climate and lake changes over the last 7000 years at the boreal treeline in north-central Siberia. Quaternary Science Reviews, 147(1), 422-434, https://doi.org/10.1016/j.quascirev.2015.08.015 AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI Dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.848292 https://doi.org/10.1016/j.quascirev.2015.08.015 2023-01-20T07:33:29Z Palaeoecological investigations in the larch forest-tundra ecotone in northern Siberia have the potential to reveal Holocene environmental variations, which likely have consequences for global climate change because of the strong high-latitude feedback mechanisms. A sediment core, collected from a small lake (radius ~100 m), was used to reconstruct the development of the lake and its catchment as well as vegetation and summer temperatures over the last 7100 calibrated years. A multi-proxy approach was taken including pollen and sedimentological analyses. Our data indicate a gradual replacement of open larch forests by tundra with scattered single trees as found today in the vicinity of the lake. An overall trend of cooling summer temperature from a ~2 °C warmer-than-present mid-Holocene summer temperatures until the establishment of modern conditions around 3000 years ago is reconstructed based on a regional pollen-climate transfer function. The inference of regional vegetation changes was compared to local changes in the lake's catchment. An initial small water depression occurred from 7100 to 6500 cal years BP. Afterwards, a small lake formed and deepened, probably due to thermokarst processes. Although the general trends of local and regional environmental change match, the lake catchment changes show higher variability. Furthermore, changes in the lake catchment slightly precede those in the regional vegetation. Both proxies highlight that marked environmental changes occurred in the Siberian forest-tundra ecotone over the course of the Holocene. Dataset Arctic Climate change permafrost Taymyr Thermokarst Tundra Siberia PANGAEA - Data Publisher for Earth & Environmental Science Arctic Taymyr ENVELOPE(89.987,89.987,68.219,68.219) ENVELOPE(97.649170,161.773350,73.387090,67.443000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI |
spellingShingle |
AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI Klemm, Juliane Herzschuh, Ulrike Pestryakova, Luidmila A Arctic Siberia: Modern pollen dataset and pollen spectra changes over the last 7,000 years from a lacustrine sediment core (southern Taymyr region) |
topic_facet |
AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI |
description |
Palaeoecological investigations in the larch forest-tundra ecotone in northern Siberia have the potential to reveal Holocene environmental variations, which likely have consequences for global climate change because of the strong high-latitude feedback mechanisms. A sediment core, collected from a small lake (radius ~100 m), was used to reconstruct the development of the lake and its catchment as well as vegetation and summer temperatures over the last 7100 calibrated years. A multi-proxy approach was taken including pollen and sedimentological analyses. Our data indicate a gradual replacement of open larch forests by tundra with scattered single trees as found today in the vicinity of the lake. An overall trend of cooling summer temperature from a ~2 °C warmer-than-present mid-Holocene summer temperatures until the establishment of modern conditions around 3000 years ago is reconstructed based on a regional pollen-climate transfer function. The inference of regional vegetation changes was compared to local changes in the lake's catchment. An initial small water depression occurred from 7100 to 6500 cal years BP. Afterwards, a small lake formed and deepened, probably due to thermokarst processes. Although the general trends of local and regional environmental change match, the lake catchment changes show higher variability. Furthermore, changes in the lake catchment slightly precede those in the regional vegetation. Both proxies highlight that marked environmental changes occurred in the Siberian forest-tundra ecotone over the course of the Holocene. |
format |
Dataset |
author |
Klemm, Juliane Herzschuh, Ulrike Pestryakova, Luidmila A |
author_facet |
Klemm, Juliane Herzschuh, Ulrike Pestryakova, Luidmila A |
author_sort |
Klemm, Juliane |
title |
Arctic Siberia: Modern pollen dataset and pollen spectra changes over the last 7,000 years from a lacustrine sediment core (southern Taymyr region) |
title_short |
Arctic Siberia: Modern pollen dataset and pollen spectra changes over the last 7,000 years from a lacustrine sediment core (southern Taymyr region) |
title_full |
Arctic Siberia: Modern pollen dataset and pollen spectra changes over the last 7,000 years from a lacustrine sediment core (southern Taymyr region) |
title_fullStr |
Arctic Siberia: Modern pollen dataset and pollen spectra changes over the last 7,000 years from a lacustrine sediment core (southern Taymyr region) |
title_full_unstemmed |
Arctic Siberia: Modern pollen dataset and pollen spectra changes over the last 7,000 years from a lacustrine sediment core (southern Taymyr region) |
title_sort |
arctic siberia: modern pollen dataset and pollen spectra changes over the last 7,000 years from a lacustrine sediment core (southern taymyr region) |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.848292 https://doi.org/10.1594/PANGAEA.848292 |
op_coverage |
MEDIAN LATITUDE: 71.350829 * MEDIAN LONGITUDE: 115.920256 * SOUTH-BOUND LATITUDE: 67.443000 * WEST-BOUND LONGITUDE: 97.649170 * NORTH-BOUND LATITUDE: 73.387090 * EAST-BOUND LONGITUDE: 161.773350 * DATE/TIME START: 2006-07-14T13:00:00 * DATE/TIME END: 2011-08-14T00:00:00 |
long_lat |
ENVELOPE(89.987,89.987,68.219,68.219) ENVELOPE(97.649170,161.773350,73.387090,67.443000) |
geographic |
Arctic Taymyr |
geographic_facet |
Arctic Taymyr |
genre |
Arctic Climate change permafrost Taymyr Thermokarst Tundra Siberia |
genre_facet |
Arctic Climate change permafrost Taymyr Thermokarst Tundra Siberia |
op_source |
Supplement to: Klemm, Juliane; Herzschuh, Ulrike; Pestryakova, Luidmila A (2016): Vegetation, climate and lake changes over the last 7000 years at the boreal treeline in north-central Siberia. Quaternary Science Reviews, 147(1), 422-434, https://doi.org/10.1016/j.quascirev.2015.08.015 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.848292 https://doi.org/10.1594/PANGAEA.848292 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.848292 https://doi.org/10.1016/j.quascirev.2015.08.015 |
_version_ |
1766343118372732928 |