LATE QUATERNARY HISTORY OF THE NORTHERN BEETLE FAUNA OF NORTH AMERICA: A SYNTHESIS OF FOSSIL AND DISTRIBUTIONAL EVIDENCE
Abstract Fossils from sites of Late Quaternary age in North America provide tangible evidence of temporal changes in the character of the northern beetle fauna. Based on a synthesis of the fossil data with analyses of the present distributions for northern species, a rudimentary model is proposed to...
Published in: | Memoirs of the Entomological Society of Canada |
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Language: | English |
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Cambridge University Press (CUP)
1988
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Online Access: | http://dx.doi.org/10.4039/entm120144093-1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0071075X00003350 |
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crcambridgeupr:10.4039/entm120144093-1 2023-05-15T14:40:08+02:00 LATE QUATERNARY HISTORY OF THE NORTHERN BEETLE FAUNA OF NORTH AMERICA: A SYNTHESIS OF FOSSIL AND DISTRIBUTIONAL EVIDENCE Schwert, Donald P. Ashworth, Allan C. 1988 http://dx.doi.org/10.4039/entm120144093-1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0071075X00003350 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Memoirs of the Entomological Society of Canada volume 120, issue S144, page 93-107 ISSN 0071-075X journal-article 1988 crcambridgeupr https://doi.org/10.4039/entm120144093-1 2022-09-21T19:42:38Z Abstract Fossils from sites of Late Quaternary age in North America provide tangible evidence of temporal changes in the character of the northern beetle fauna. Based on a synthesis of the fossil data with analyses of the present distributions for northern species, a rudimentary model is proposed to explain the recent history of the fauna of the arctic and the boreal forest.An open-ground beetle fauna of arctic–subarctic affinities had become established along the southern margin of the Laurentide ice sheet in the midcontinent by 20 500 years before present (yr B.P.). Climatic warming decimated this fauna throughout lowland areas at some time between 16 700 and 15 300 yr B.P.; small populations of some arctic–subarctic species, however, survived within either alpine habitats of the Cordillera and Appalachians or specialized environments associated with stagnant ice.Populations of the same arctic–subarctic beetle species existed within the ice-free Alaska–Yukon refugium throughout the late Wisconsinan. During the Holocene, this region served as the principal centre-of-origin for the dispersal of the arctic–subarctic beetle fauna.The beetle fauna of the boreal forest was also displaced southward by Late Wisconsinan glaciation. By 15 300 yr B.P., however, this fauna had largely replaced the arctic–subarctic beetle fauna along the ice margin of the midcontinent. Evidence provided by fossils from a series of sites demonstrates that beetle species of the boreal forest dispersed northward into Canada as the ice front receded. Article in Journal/Newspaper Arctic Ice Sheet Subarctic Alaska Yukon Cambridge University Press (via Crossref) Arctic Yukon Canada Memoirs of the Entomological Society of Canada 120 S144 93 107 |
institution |
Open Polar |
collection |
Cambridge University Press (via Crossref) |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Fossils from sites of Late Quaternary age in North America provide tangible evidence of temporal changes in the character of the northern beetle fauna. Based on a synthesis of the fossil data with analyses of the present distributions for northern species, a rudimentary model is proposed to explain the recent history of the fauna of the arctic and the boreal forest.An open-ground beetle fauna of arctic–subarctic affinities had become established along the southern margin of the Laurentide ice sheet in the midcontinent by 20 500 years before present (yr B.P.). Climatic warming decimated this fauna throughout lowland areas at some time between 16 700 and 15 300 yr B.P.; small populations of some arctic–subarctic species, however, survived within either alpine habitats of the Cordillera and Appalachians or specialized environments associated with stagnant ice.Populations of the same arctic–subarctic beetle species existed within the ice-free Alaska–Yukon refugium throughout the late Wisconsinan. During the Holocene, this region served as the principal centre-of-origin for the dispersal of the arctic–subarctic beetle fauna.The beetle fauna of the boreal forest was also displaced southward by Late Wisconsinan glaciation. By 15 300 yr B.P., however, this fauna had largely replaced the arctic–subarctic beetle fauna along the ice margin of the midcontinent. Evidence provided by fossils from a series of sites demonstrates that beetle species of the boreal forest dispersed northward into Canada as the ice front receded. |
format |
Article in Journal/Newspaper |
author |
Schwert, Donald P. Ashworth, Allan C. |
spellingShingle |
Schwert, Donald P. Ashworth, Allan C. LATE QUATERNARY HISTORY OF THE NORTHERN BEETLE FAUNA OF NORTH AMERICA: A SYNTHESIS OF FOSSIL AND DISTRIBUTIONAL EVIDENCE |
author_facet |
Schwert, Donald P. Ashworth, Allan C. |
author_sort |
Schwert, Donald P. |
title |
LATE QUATERNARY HISTORY OF THE NORTHERN BEETLE FAUNA OF NORTH AMERICA: A SYNTHESIS OF FOSSIL AND DISTRIBUTIONAL EVIDENCE |
title_short |
LATE QUATERNARY HISTORY OF THE NORTHERN BEETLE FAUNA OF NORTH AMERICA: A SYNTHESIS OF FOSSIL AND DISTRIBUTIONAL EVIDENCE |
title_full |
LATE QUATERNARY HISTORY OF THE NORTHERN BEETLE FAUNA OF NORTH AMERICA: A SYNTHESIS OF FOSSIL AND DISTRIBUTIONAL EVIDENCE |
title_fullStr |
LATE QUATERNARY HISTORY OF THE NORTHERN BEETLE FAUNA OF NORTH AMERICA: A SYNTHESIS OF FOSSIL AND DISTRIBUTIONAL EVIDENCE |
title_full_unstemmed |
LATE QUATERNARY HISTORY OF THE NORTHERN BEETLE FAUNA OF NORTH AMERICA: A SYNTHESIS OF FOSSIL AND DISTRIBUTIONAL EVIDENCE |
title_sort |
late quaternary history of the northern beetle fauna of north america: a synthesis of fossil and distributional evidence |
publisher |
Cambridge University Press (CUP) |
publishDate |
1988 |
url |
http://dx.doi.org/10.4039/entm120144093-1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0071075X00003350 |
geographic |
Arctic Yukon Canada |
geographic_facet |
Arctic Yukon Canada |
genre |
Arctic Ice Sheet Subarctic Alaska Yukon |
genre_facet |
Arctic Ice Sheet Subarctic Alaska Yukon |
op_source |
Memoirs of the Entomological Society of Canada volume 120, issue S144, page 93-107 ISSN 0071-075X |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.4039/entm120144093-1 |
container_title |
Memoirs of the Entomological Society of Canada |
container_volume |
120 |
container_issue |
S144 |
container_start_page |
93 |
op_container_end_page |
107 |
_version_ |
1766312040630059008 |