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 ~16 cal ka BP. Herb-dominated tundra persisted until ~14.7 cal ka...
Published in: | Quaternary Research |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
ACADEMIC PRESS INC ELSEVIER SCIENCE
2012
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/31367/ https://epic.awi.de/id/eprint/31367/1/Fritz_et_al_2012_QR_personal_copy.pdf http://www.sciencedirect.com/science/article/pii/S0033589412000877 https://hdl.handle.net/10013/epic.40168 https://hdl.handle.net/10013/epic.40168.d001 |
id |
ftawi:oai:epic.awi.de:31367 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:31367 2024-09-15T17:58:48+00:00 Late glacial and Holocene sedimentation, vegetation, and climate history from easternmost Beringia (northern Yukon Territory, Canada) Fritz, Michael Herzschuh, Ulrike Wetterich, Sebastian Lantuit, Hugues De Pascale, G.P. Pollard, W. H. Schirrmeister, Lutz 2012 application/pdf https://epic.awi.de/id/eprint/31367/ https://epic.awi.de/id/eprint/31367/1/Fritz_et_al_2012_QR_personal_copy.pdf http://www.sciencedirect.com/science/article/pii/S0033589412000877 https://hdl.handle.net/10013/epic.40168 https://hdl.handle.net/10013/epic.40168.d001 unknown ACADEMIC PRESS INC ELSEVIER SCIENCE https://epic.awi.de/id/eprint/31367/1/Fritz_et_al_2012_QR_personal_copy.pdf https://hdl.handle.net/10013/epic.40168.d001 Fritz, M. orcid:0000-0003-4591-7325 , Herzschuh, U. orcid:0000-0003-0999-1261 , Wetterich, S. orcid:0000-0001-9234-1192 , Lantuit, H. orcid:0000-0003-1497-6760 , De Pascale, G. , Pollard, W. H. and Schirrmeister, L. orcid:0000-0001-9455-0596 (2012) Late glacial and Holocene sedimentation, vegetation, and climate history from easternmost Beringia (northern Yukon Territory, Canada) , Quaternary Research, 78 (3), pp. 549-560 . doi:10.1016/j.yqres.2012.07.007 <https://doi.org/10.1016/j.yqres.2012.07.007> , hdl:10013/epic.40168 EPIC3Quaternary Research, ACADEMIC PRESS INC ELSEVIER SCIENCE, 78(3), pp. 549-560, ISSN: 0033-5894 Article isiRev 2012 ftawi https://doi.org/10.1016/j.yqres.2012.07.007 2024-06-24T04:05:07Z 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 ≤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. Article in Journal/Newspaper Beaufort Sea Ice Sheet Tundra Beringia Yukon Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Quaternary Research 78 3 549 560 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
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 ≤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 |
Article in Journal/Newspaper |
author |
Fritz, Michael Herzschuh, Ulrike Wetterich, Sebastian Lantuit, Hugues De Pascale, G.P. Pollard, W. H. Schirrmeister, Lutz |
spellingShingle |
Fritz, Michael Herzschuh, Ulrike Wetterich, Sebastian Lantuit, Hugues De Pascale, G.P. Pollard, W. H. Schirrmeister, Lutz Late glacial and Holocene sedimentation, vegetation, and climate history from easternmost Beringia (northern Yukon Territory, Canada) |
author_facet |
Fritz, Michael Herzschuh, Ulrike Wetterich, Sebastian Lantuit, Hugues De Pascale, G.P. Pollard, W. H. Schirrmeister, Lutz |
author_sort |
Fritz, Michael |
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) |
publisher |
ACADEMIC PRESS INC ELSEVIER SCIENCE |
publishDate |
2012 |
url |
https://epic.awi.de/id/eprint/31367/ https://epic.awi.de/id/eprint/31367/1/Fritz_et_al_2012_QR_personal_copy.pdf http://www.sciencedirect.com/science/article/pii/S0033589412000877 https://hdl.handle.net/10013/epic.40168 https://hdl.handle.net/10013/epic.40168.d001 |
genre |
Beaufort Sea Ice Sheet Tundra Beringia Yukon |
genre_facet |
Beaufort Sea Ice Sheet Tundra Beringia Yukon |
op_source |
EPIC3Quaternary Research, ACADEMIC PRESS INC ELSEVIER SCIENCE, 78(3), pp. 549-560, ISSN: 0033-5894 |
op_relation |
https://epic.awi.de/id/eprint/31367/1/Fritz_et_al_2012_QR_personal_copy.pdf https://hdl.handle.net/10013/epic.40168.d001 Fritz, M. orcid:0000-0003-4591-7325 , Herzschuh, U. orcid:0000-0003-0999-1261 , Wetterich, S. orcid:0000-0001-9234-1192 , Lantuit, H. orcid:0000-0003-1497-6760 , De Pascale, G. , Pollard, W. H. and Schirrmeister, L. orcid:0000-0001-9455-0596 (2012) Late glacial and Holocene sedimentation, vegetation, and climate history from easternmost Beringia (northern Yukon Territory, Canada) , Quaternary Research, 78 (3), pp. 549-560 . doi:10.1016/j.yqres.2012.07.007 <https://doi.org/10.1016/j.yqres.2012.07.007> , hdl:10013/epic.40168 |
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_ |
1810435764961411072 |