Late glacial and holocene sedimentation, vegetation, and climate history from easternmost Beringia (northern Yukon Territory, 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 similar to 16 cal ka BP. Herb-dominated tundra persisted until si...
Published in: | Quaternary Research |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2012
|
Subjects: | |
Online Access: | https://publishup.uni-potsdam.de/frontdoor/index/index/docId/35559 https://doi.org/10.1016/j.yqres.2012.07.007 |
id |
ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:35559 |
---|---|
record_format |
openpolar |
spelling |
ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:35559 2024-05-19T07:38:13+00:00 Late glacial and holocene sedimentation, vegetation, and climate history from easternmost Beringia (northern Yukon Territory, Canada) Fritz, Michael (Dr.) Herzschuh, Ulrike Wetterich, Sebastian Lantuit, Hugues (Prof. Dr.) De Pascale, Gregory P. Pollard, Wayne H. Schirrmeister, Lutz (Dr.) 2012 https://publishup.uni-potsdam.de/frontdoor/index/index/docId/35559 https://doi.org/10.1016/j.yqres.2012.07.007 eng eng https://publishup.uni-potsdam.de/frontdoor/index/index/docId/35559 https://doi.org/10.1016/j.yqres.2012.07.007 info:eu-repo/semantics/closedAccess Institut für Geowissenschaften article doc-type:article 2012 ftubpotsdam https://doi.org/10.1016/j.yqres.2012.07.007 2024-04-30T23:32:08Z 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 similar to 16 cal ka BP. Herb-dominated tundra persisted until similar to 14.7 cal ka BP with mean July air temperatures <= 5 degrees C colder and annual precipitation 50 to 120 mm lower than today. Temperatures rapidly increased during the Bolling/Allerod 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 similar to 1.5 degrees C (similar to 2.5 to 3.0 degrees 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-Berula shrub tundra from similar to 5 cal ka BP until present, and conversion of a continental climate into a coastal-maritime climate near the Beaufort Sea. Article in Journal/Newspaper Beaufort Sea Ice Sheet Tundra Beringia Yukon University of Potsdam: publish.UP Quaternary Research 78 3 549 560 |
institution |
Open Polar |
collection |
University of Potsdam: publish.UP |
op_collection_id |
ftubpotsdam |
language |
English |
topic |
Institut für Geowissenschaften |
spellingShingle |
Institut für Geowissenschaften Fritz, Michael (Dr.) Herzschuh, Ulrike Wetterich, Sebastian Lantuit, Hugues (Prof. Dr.) De Pascale, Gregory P. Pollard, Wayne H. Schirrmeister, Lutz (Dr.) Late glacial and holocene sedimentation, vegetation, and climate history from easternmost Beringia (northern Yukon Territory, Canada) |
topic_facet |
Institut für Geowissenschaften |
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 similar to 16 cal ka BP. Herb-dominated tundra persisted until similar to 14.7 cal ka BP with mean July air temperatures <= 5 degrees C colder and annual precipitation 50 to 120 mm lower than today. Temperatures rapidly increased during the Bolling/Allerod 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 similar to 1.5 degrees C (similar to 2.5 to 3.0 degrees 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-Berula shrub tundra from similar to 5 cal ka BP until present, and conversion of a continental climate into a coastal-maritime climate near the Beaufort Sea. |
format |
Article in Journal/Newspaper |
author |
Fritz, Michael (Dr.) Herzschuh, Ulrike Wetterich, Sebastian Lantuit, Hugues (Prof. Dr.) De Pascale, Gregory P. Pollard, Wayne H. Schirrmeister, Lutz (Dr.) |
author_facet |
Fritz, Michael (Dr.) Herzschuh, Ulrike Wetterich, Sebastian Lantuit, Hugues (Prof. Dr.) De Pascale, Gregory P. Pollard, Wayne H. Schirrmeister, Lutz (Dr.) |
author_sort |
Fritz, Michael (Dr.) |
title |
Late glacial and holocene sedimentation, vegetation, and climate history from easternmost Beringia (northern Yukon Territory, Canada) |
title_short |
Late glacial and holocene sedimentation, vegetation, and climate history from easternmost Beringia (northern Yukon Territory, Canada) |
title_full |
Late glacial and holocene sedimentation, vegetation, and climate history from easternmost Beringia (northern Yukon Territory, Canada) |
title_fullStr |
Late glacial and holocene sedimentation, vegetation, and climate history from easternmost Beringia (northern Yukon Territory, Canada) |
title_full_unstemmed |
Late glacial and holocene sedimentation, vegetation, and climate history from easternmost Beringia (northern Yukon Territory, Canada) |
title_sort |
late glacial and holocene sedimentation, vegetation, and climate history from easternmost beringia (northern yukon territory, canada) |
publishDate |
2012 |
url |
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/35559 https://doi.org/10.1016/j.yqres.2012.07.007 |
genre |
Beaufort Sea Ice Sheet Tundra Beringia Yukon |
genre_facet |
Beaufort Sea Ice Sheet Tundra Beringia Yukon |
op_relation |
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/35559 https://doi.org/10.1016/j.yqres.2012.07.007 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.yqres.2012.07.007 |
container_title |
Quaternary Research |
container_volume |
78 |
container_issue |
3 |
container_start_page |
549 |
op_container_end_page |
560 |
_version_ |
1799477628987506688 |