Sedimentaology, pollen profile, and climate reconstruction on a sediment core from Trou Lake, Yukon, Canada
Beringian climate and environmental history are poorly characterized at its easternmost edge. Lake sediments from the northern Yukon Territory have recorded sedimentation, vegetation, summer temperature and precipitation changes since ~16 cal ka BP. Herb-dominated tundra persisted until ~14.7 cal ka...
Main Authors: | , , , , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2015
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.845807 https://doi.org/10.1594/PANGAEA.845807 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.845807 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.845807 2023-05-15T15:40:36+02:00 Sedimentaology, pollen profile, and climate reconstruction on a sediment core from Trou Lake, Yukon, Canada Fritz, Michael Herzschuh, Ulrike Wetterich, Sebastian Lantuit, Hugues De Pascale, Gregory P Pollard, Wayne H Schirrmeister, Lutz LATITUDE: 68.828870 * LONGITUDE: -138.745220 * DATE/TIME START: 2009-04-22T00:00:00 * DATE/TIME END: 2009-04-22T00:00:00 2015-04-28 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.845807 https://doi.org/10.1594/PANGAEA.845807 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.845807 https://doi.org/10.1594/PANGAEA.845807 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Fritz, Michael; Herzschuh, Ulrike; Wetterich, Sebastian; Lantuit, Hugues; De Pascale, Gregory P; Pollard, Wayne H; Schirrmeister, Lutz (2012): Late glacial and Holocene sedimentation, vegetation, and climate history from easternmost Beringia (northern Yukon Territory, Canada). Quaternary Research, 78(3), 549-560, https://doi.org/10.1016/j.yqres.2012.07.007 AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI Dataset 2015 ftpangaea https://doi.org/10.1594/PANGAEA.845807 https://doi.org/10.1016/j.yqres.2012.07.007 2023-01-20T07:33:27Z Beringian climate and environmental history are poorly characterized at its easternmost edge. Lake sediments from the northern Yukon Territory have recorded sedimentation, vegetation, summer temperature and precipitation changes since ~16 cal ka BP. Herb-dominated tundra persisted until ~14.7 cal ka BP with mean July air temperatures less than or equal to 5 °C colder and annual precipitation 50 to 120 mm lower than today. Temperatures rapidly increased during the Bølling/Allerød interstadial towards modern conditions, favoring establishment of Betula-Salix shrub tundra. Pollen-inferred temperature reconstructions recorded a pronounced Younger Dryas stadial in east Beringia with a temperature drop of ~1.5 °C (~2.5 to 3.0 °C below modern conditions) and low net precipitation (90 to 170 mm) but show little evidence of an early Holocene thermal maximum in the pollen record. Sustained low net precipitation and increased evaporation during early Holocene warming suggest a moisture-limited spread of vegetation and an obscured summer temperature maximum. Northern Yukon Holocene moisture availability increased in response to a retreating Laurentide Ice Sheet, postglacial sea level rise, and decreasing summer insolation that in turn led to establishment of Alnus-Betula shrub tundra from ~5 cal ka BP until present, and conversion of a continental climate into a coastal-maritime climate near the Beaufort Sea. Dataset Beaufort Sea Ice Ice Sheet permafrost Tundra Beringia Yukon PANGAEA - Data Publisher for Earth & Environmental Science Canada Yukon ENVELOPE(-138.745220,-138.745220,68.828870,68.828870) |
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 Fritz, Michael Herzschuh, Ulrike Wetterich, Sebastian Lantuit, Hugues De Pascale, Gregory P Pollard, Wayne H Schirrmeister, Lutz Sedimentaology, pollen profile, and climate reconstruction on a sediment core from Trou Lake, Yukon, Canada |
topic_facet |
AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI |
description |
Beringian climate and environmental history are poorly characterized at its easternmost edge. Lake sediments from the northern Yukon Territory have recorded sedimentation, vegetation, summer temperature and precipitation changes since ~16 cal ka BP. Herb-dominated tundra persisted until ~14.7 cal ka BP with mean July air temperatures less than or equal to 5 °C colder and annual precipitation 50 to 120 mm lower than today. Temperatures rapidly increased during the Bølling/Allerød interstadial towards modern conditions, favoring establishment of Betula-Salix shrub tundra. Pollen-inferred temperature reconstructions recorded a pronounced Younger Dryas stadial in east Beringia with a temperature drop of ~1.5 °C (~2.5 to 3.0 °C below modern conditions) and low net precipitation (90 to 170 mm) but show little evidence of an early Holocene thermal maximum in the pollen record. Sustained low net precipitation and increased evaporation during early Holocene warming suggest a moisture-limited spread of vegetation and an obscured summer temperature maximum. Northern Yukon Holocene moisture availability increased in response to a retreating Laurentide Ice Sheet, postglacial sea level rise, and decreasing summer insolation that in turn led to establishment of Alnus-Betula shrub tundra from ~5 cal ka BP until present, and conversion of a continental climate into a coastal-maritime climate near the Beaufort Sea. |
format |
Dataset |
author |
Fritz, Michael Herzschuh, Ulrike Wetterich, Sebastian Lantuit, Hugues De Pascale, Gregory P Pollard, Wayne H Schirrmeister, Lutz |
author_facet |
Fritz, Michael Herzschuh, Ulrike Wetterich, Sebastian Lantuit, Hugues De Pascale, Gregory P Pollard, Wayne H Schirrmeister, Lutz |
author_sort |
Fritz, Michael |
title |
Sedimentaology, pollen profile, and climate reconstruction on a sediment core from Trou Lake, Yukon, Canada |
title_short |
Sedimentaology, pollen profile, and climate reconstruction on a sediment core from Trou Lake, Yukon, Canada |
title_full |
Sedimentaology, pollen profile, and climate reconstruction on a sediment core from Trou Lake, Yukon, Canada |
title_fullStr |
Sedimentaology, pollen profile, and climate reconstruction on a sediment core from Trou Lake, Yukon, Canada |
title_full_unstemmed |
Sedimentaology, pollen profile, and climate reconstruction on a sediment core from Trou Lake, Yukon, Canada |
title_sort |
sedimentaology, pollen profile, and climate reconstruction on a sediment core from trou lake, yukon, canada |
publisher |
PANGAEA |
publishDate |
2015 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.845807 https://doi.org/10.1594/PANGAEA.845807 |
op_coverage |
LATITUDE: 68.828870 * LONGITUDE: -138.745220 * DATE/TIME START: 2009-04-22T00:00:00 * DATE/TIME END: 2009-04-22T00:00:00 |
long_lat |
ENVELOPE(-138.745220,-138.745220,68.828870,68.828870) |
geographic |
Canada Yukon |
geographic_facet |
Canada Yukon |
genre |
Beaufort Sea Ice Ice Sheet permafrost Tundra Beringia Yukon |
genre_facet |
Beaufort Sea Ice Ice Sheet permafrost Tundra Beringia Yukon |
op_source |
Supplement to: Fritz, Michael; Herzschuh, Ulrike; Wetterich, Sebastian; Lantuit, Hugues; De Pascale, Gregory P; Pollard, Wayne H; Schirrmeister, Lutz (2012): Late glacial and Holocene sedimentation, vegetation, and climate history from easternmost Beringia (northern Yukon Territory, Canada). Quaternary Research, 78(3), 549-560, https://doi.org/10.1016/j.yqres.2012.07.007 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.845807 https://doi.org/10.1594/PANGAEA.845807 |
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.845807 https://doi.org/10.1016/j.yqres.2012.07.007 |
_version_ |
1766373206015344640 |