Late Pleistocene Climates of Beringia, Based on Analysis of Fossil Beetles
Abstract Thirty-one fossil beetle assemblages from central and eastern Beringia (Alaska, the Yukon Territory, and the now-submerged Bering Land Bridge) have yielded seasonal temperature estimates for the interval 43,550–9250 14 C yr before present (yr B.P.). Estimates of the mean temperature of the...
Published in: | Quaternary Research |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2000
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1006/qres.1999.2093 http://api.elsevier.com/content/article/PII:S0033589499920938?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589499920938?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400030696 |
id |
crcambridgeupr:10.1006/qres.1999.2093 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1006/qres.1999.2093 2024-10-13T14:05:27+00:00 Late Pleistocene Climates of Beringia, Based on Analysis of Fossil Beetles Elias, Scott A. 2000 http://dx.doi.org/10.1006/qres.1999.2093 http://api.elsevier.com/content/article/PII:S0033589499920938?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589499920938?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400030696 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 53, issue 2, page 229-235 ISSN 0033-5894 1096-0287 journal-article 2000 crcambridgeupr https://doi.org/10.1006/qres.1999.2093 2024-09-25T04:03:19Z Abstract Thirty-one fossil beetle assemblages from central and eastern Beringia (Alaska, the Yukon Territory, and the now-submerged Bering Land Bridge) have yielded seasonal temperature estimates for the interval 43,550–9250 14 C yr before present (yr B.P.). Estimates of the mean temperature of the warmest (TMAX) and coldest (TMIN) months were derived by the Mutual Climatic Range method. Assemblages from northern and western sites show a mid-Wisconsin interstadial TMAX warming from 35,000–30,000 yr B.P.; this warming is less pronounced in assemblages for interior regions. There is little or no beetle evidence for the spread of coniferous forest in eastern Beringia during this interstade, except for in parts of the Yukon Territory. During the last glacial maximum TMAX values were depressed by about 2°–2.5°C in Arctic regions of Beringia, and by about 4°C in the interior; TMIN values were about 8°C colder in both regions. TMAX and TMIN values rose rapidly at northern sites after 12,000 yr B.P. Seasonal temperatures peaked at 11,000 yr B.P., just as the Bering Land Bridge was inundated. This was followed by a sharp climatic cooling between 11,000 and 10,000 yr B.P., the equivalent of a Younger Dryas cooling in eastern Beringia. Article in Journal/Newspaper Arctic Bering Land Bridge Alaska Beringia Yukon Cambridge University Press Arctic Yukon Quaternary Research 53 2 229 235 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Thirty-one fossil beetle assemblages from central and eastern Beringia (Alaska, the Yukon Territory, and the now-submerged Bering Land Bridge) have yielded seasonal temperature estimates for the interval 43,550–9250 14 C yr before present (yr B.P.). Estimates of the mean temperature of the warmest (TMAX) and coldest (TMIN) months were derived by the Mutual Climatic Range method. Assemblages from northern and western sites show a mid-Wisconsin interstadial TMAX warming from 35,000–30,000 yr B.P.; this warming is less pronounced in assemblages for interior regions. There is little or no beetle evidence for the spread of coniferous forest in eastern Beringia during this interstade, except for in parts of the Yukon Territory. During the last glacial maximum TMAX values were depressed by about 2°–2.5°C in Arctic regions of Beringia, and by about 4°C in the interior; TMIN values were about 8°C colder in both regions. TMAX and TMIN values rose rapidly at northern sites after 12,000 yr B.P. Seasonal temperatures peaked at 11,000 yr B.P., just as the Bering Land Bridge was inundated. This was followed by a sharp climatic cooling between 11,000 and 10,000 yr B.P., the equivalent of a Younger Dryas cooling in eastern Beringia. |
format |
Article in Journal/Newspaper |
author |
Elias, Scott A. |
spellingShingle |
Elias, Scott A. Late Pleistocene Climates of Beringia, Based on Analysis of Fossil Beetles |
author_facet |
Elias, Scott A. |
author_sort |
Elias, Scott A. |
title |
Late Pleistocene Climates of Beringia, Based on Analysis of Fossil Beetles |
title_short |
Late Pleistocene Climates of Beringia, Based on Analysis of Fossil Beetles |
title_full |
Late Pleistocene Climates of Beringia, Based on Analysis of Fossil Beetles |
title_fullStr |
Late Pleistocene Climates of Beringia, Based on Analysis of Fossil Beetles |
title_full_unstemmed |
Late Pleistocene Climates of Beringia, Based on Analysis of Fossil Beetles |
title_sort |
late pleistocene climates of beringia, based on analysis of fossil beetles |
publisher |
Cambridge University Press (CUP) |
publishDate |
2000 |
url |
http://dx.doi.org/10.1006/qres.1999.2093 http://api.elsevier.com/content/article/PII:S0033589499920938?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589499920938?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400030696 |
geographic |
Arctic Yukon |
geographic_facet |
Arctic Yukon |
genre |
Arctic Bering Land Bridge Alaska Beringia Yukon |
genre_facet |
Arctic Bering Land Bridge Alaska Beringia Yukon |
op_source |
Quaternary Research volume 53, issue 2, page 229-235 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1006/qres.1999.2093 |
container_title |
Quaternary Research |
container_volume |
53 |
container_issue |
2 |
container_start_page |
229 |
op_container_end_page |
235 |
_version_ |
1812811539022872576 |