A Last Glacial Maximum pollen record from Bodmin Moor showing a possible cryptic northern refugium in southwest England
Abstract A late Devensian palynological record is presented from Dozmary Pool (Bodmin Moor, southwest England), beyond the southern limit of the Last Glacial Maximum (LGM) British Ice Sheet. The pollen assemblages indicate predominantly herbaceous tundra–steppe communities but also include elevated...
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crwiley:10.1002/jqs.1309 2024-09-30T14:36:41+00:00 A Last Glacial Maximum pollen record from Bodmin Moor showing a possible cryptic northern refugium in southwest England Kelly, Ann Charman, Dan J. Newnham, Rewi M. 2009 http://dx.doi.org/10.1002/jqs.1309 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1309 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1309 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 25, issue 3, page 296-308 ISSN 0267-8179 1099-1417 journal-article 2009 crwiley https://doi.org/10.1002/jqs.1309 2024-09-17T04:47:43Z Abstract A late Devensian palynological record is presented from Dozmary Pool (Bodmin Moor, southwest England), beyond the southern limit of the Last Glacial Maximum (LGM) British Ice Sheet. The pollen assemblages indicate predominantly herbaceous tundra–steppe communities but also include elevated levels (typically 10–20%) of conifer tree pollen ( Picea , Pinus , Abies ) and lower but persistent percentages of broadleaf tree pollen during the LGM. This record is seemingly at odds with the orthodox view of an entirely treeless tundra–steppe environment for this region and elimination of tree species from the British Isles during glacial maxima. Long‐distance pollen transport seems an unlikely explanation for the tree pollen considering distance to the nearest known refugia, except possibly for Pinus . Reworking of the tree pollen, often invoked in these circumstances, remains a possible alternative, especially given the abundance of these trees in the region during early Devensian interstadials. However, this explanation has been challenged by studies reporting plant macrofossil and faunal evidence for survival of temperate biota during glacial maxima and from climate modelling work that suggests some trees could have survived the glacial extremes in areas well beyond the recorded glacial refugia. Assuming reworking was not a major factor, the Dozmary Pool pollen record is consistent with the ‘cryptic northern refugia hypothesis’ that invokes survival of trees in small, scattered populations under locally favourable conditions during glacial maxima. Copyright © 2009 John Wiley & Sons, Ltd. Article in Journal/Newspaper Ice Sheet Tundra Wiley Online Library Journal of Quaternary Science 25 3 296 308 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract A late Devensian palynological record is presented from Dozmary Pool (Bodmin Moor, southwest England), beyond the southern limit of the Last Glacial Maximum (LGM) British Ice Sheet. The pollen assemblages indicate predominantly herbaceous tundra–steppe communities but also include elevated levels (typically 10–20%) of conifer tree pollen ( Picea , Pinus , Abies ) and lower but persistent percentages of broadleaf tree pollen during the LGM. This record is seemingly at odds with the orthodox view of an entirely treeless tundra–steppe environment for this region and elimination of tree species from the British Isles during glacial maxima. Long‐distance pollen transport seems an unlikely explanation for the tree pollen considering distance to the nearest known refugia, except possibly for Pinus . Reworking of the tree pollen, often invoked in these circumstances, remains a possible alternative, especially given the abundance of these trees in the region during early Devensian interstadials. However, this explanation has been challenged by studies reporting plant macrofossil and faunal evidence for survival of temperate biota during glacial maxima and from climate modelling work that suggests some trees could have survived the glacial extremes in areas well beyond the recorded glacial refugia. Assuming reworking was not a major factor, the Dozmary Pool pollen record is consistent with the ‘cryptic northern refugia hypothesis’ that invokes survival of trees in small, scattered populations under locally favourable conditions during glacial maxima. Copyright © 2009 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Kelly, Ann Charman, Dan J. Newnham, Rewi M. |
spellingShingle |
Kelly, Ann Charman, Dan J. Newnham, Rewi M. A Last Glacial Maximum pollen record from Bodmin Moor showing a possible cryptic northern refugium in southwest England |
author_facet |
Kelly, Ann Charman, Dan J. Newnham, Rewi M. |
author_sort |
Kelly, Ann |
title |
A Last Glacial Maximum pollen record from Bodmin Moor showing a possible cryptic northern refugium in southwest England |
title_short |
A Last Glacial Maximum pollen record from Bodmin Moor showing a possible cryptic northern refugium in southwest England |
title_full |
A Last Glacial Maximum pollen record from Bodmin Moor showing a possible cryptic northern refugium in southwest England |
title_fullStr |
A Last Glacial Maximum pollen record from Bodmin Moor showing a possible cryptic northern refugium in southwest England |
title_full_unstemmed |
A Last Glacial Maximum pollen record from Bodmin Moor showing a possible cryptic northern refugium in southwest England |
title_sort |
last glacial maximum pollen record from bodmin moor showing a possible cryptic northern refugium in southwest england |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1002/jqs.1309 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1309 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1309 |
genre |
Ice Sheet Tundra |
genre_facet |
Ice Sheet Tundra |
op_source |
Journal of Quaternary Science volume 25, issue 3, page 296-308 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.1309 |
container_title |
Journal of Quaternary Science |
container_volume |
25 |
container_issue |
3 |
container_start_page |
296 |
op_container_end_page |
308 |
_version_ |
1811639691107106816 |