Holocene and Last Interglacial cloudiness in eastern Baffin Island, Arctic CanadaThis article is one of a series of papers published in this Special Issue on the theme Polar Climate Stability Network .GEOTOP Publication 2008-0027.
This study presents Last Interglacial and Holocene vegetation and climate changes at Fog Lake (67°11′N, 63°15′W) on eastern Baffin Island, Arctic Canada. The vegetation cover is reported as vegetation structural types (or biomes). July air temperature and sunshine during the growing season (June–Jul...
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crcansciencepubl:10.1139/e08-053 2023-12-17T10:24:39+01:00 Holocene and Last Interglacial cloudiness in eastern Baffin Island, Arctic CanadaThis article is one of a series of papers published in this Special Issue on the theme Polar Climate Stability Network .GEOTOP Publication 2008-0027. Fréchette, Bianca de Vernal, Anne Richard, Pierre J.H. Hollings, Pete 2008 http://dx.doi.org/10.1139/e08-053 http://www.nrcresearchpress.com/doi/full-xml/10.1139/E08-053 http://www.nrcresearchpress.com/doi/pdf/10.1139/E08-053 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 45, issue 11, page 1221-1234 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 2008 crcansciencepubl https://doi.org/10.1139/e08-053 2023-11-19T13:38:28Z This study presents Last Interglacial and Holocene vegetation and climate changes at Fog Lake (67°11′N, 63°15′W) on eastern Baffin Island, Arctic Canada. The vegetation cover is reported as vegetation structural types (or biomes). July air temperature and sunshine during the growing season (June–July–August–September) were reconstructed from pollen assemblages using the modern analogue technique. The vegetation of the Last Interglacial period evolved from a prostrate dwarf-shrub tundra to a low- and high-shrub tundra vegetation. The succession of four Arctic biomes was distinguished from the Last Interglacial sediments, whereas only one Arctic biome was recorded in the Holocene sediments. From ca. 8300 cal. years BP to present, hemiprostrate dwarf-shrub tundra occupied the soils around Fog Lake. During the Last Interglacial, growing season sunshine was higher than during the Holocene and July air temperature was 4 to 5 °C warmer than present. A principal component analysis helped in assessing relationship between floristic gradients and climate. The major vegetation changes through the Last Interglacial and Holocene were driven by July air temperature variations, whereas the minor, or subtle, vegetation changes seem rather correlated to September sunshine. This study demonstrates that growing season sunshine conditions can be reconstructed from Arctic pollen assemblages, thus providing information on feedbacks associated with cloud cover and summer temperatures, and therefore growing season length. Article in Journal/Newspaper Arctic Baffin Island Baffin Tundra Canadian Science Publishing (via Crossref) Arctic Baffin Island Canada Canadian Journal of Earth Sciences 45 11 1221 1234 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Fréchette, Bianca de Vernal, Anne Richard, Pierre J.H. Holocene and Last Interglacial cloudiness in eastern Baffin Island, Arctic CanadaThis article is one of a series of papers published in this Special Issue on the theme Polar Climate Stability Network .GEOTOP Publication 2008-0027. |
topic_facet |
General Earth and Planetary Sciences |
description |
This study presents Last Interglacial and Holocene vegetation and climate changes at Fog Lake (67°11′N, 63°15′W) on eastern Baffin Island, Arctic Canada. The vegetation cover is reported as vegetation structural types (or biomes). July air temperature and sunshine during the growing season (June–July–August–September) were reconstructed from pollen assemblages using the modern analogue technique. The vegetation of the Last Interglacial period evolved from a prostrate dwarf-shrub tundra to a low- and high-shrub tundra vegetation. The succession of four Arctic biomes was distinguished from the Last Interglacial sediments, whereas only one Arctic biome was recorded in the Holocene sediments. From ca. 8300 cal. years BP to present, hemiprostrate dwarf-shrub tundra occupied the soils around Fog Lake. During the Last Interglacial, growing season sunshine was higher than during the Holocene and July air temperature was 4 to 5 °C warmer than present. A principal component analysis helped in assessing relationship between floristic gradients and climate. The major vegetation changes through the Last Interglacial and Holocene were driven by July air temperature variations, whereas the minor, or subtle, vegetation changes seem rather correlated to September sunshine. This study demonstrates that growing season sunshine conditions can be reconstructed from Arctic pollen assemblages, thus providing information on feedbacks associated with cloud cover and summer temperatures, and therefore growing season length. |
author2 |
Hollings, Pete |
format |
Article in Journal/Newspaper |
author |
Fréchette, Bianca de Vernal, Anne Richard, Pierre J.H. |
author_facet |
Fréchette, Bianca de Vernal, Anne Richard, Pierre J.H. |
author_sort |
Fréchette, Bianca |
title |
Holocene and Last Interglacial cloudiness in eastern Baffin Island, Arctic CanadaThis article is one of a series of papers published in this Special Issue on the theme Polar Climate Stability Network .GEOTOP Publication 2008-0027. |
title_short |
Holocene and Last Interglacial cloudiness in eastern Baffin Island, Arctic CanadaThis article is one of a series of papers published in this Special Issue on the theme Polar Climate Stability Network .GEOTOP Publication 2008-0027. |
title_full |
Holocene and Last Interglacial cloudiness in eastern Baffin Island, Arctic CanadaThis article is one of a series of papers published in this Special Issue on the theme Polar Climate Stability Network .GEOTOP Publication 2008-0027. |
title_fullStr |
Holocene and Last Interglacial cloudiness in eastern Baffin Island, Arctic CanadaThis article is one of a series of papers published in this Special Issue on the theme Polar Climate Stability Network .GEOTOP Publication 2008-0027. |
title_full_unstemmed |
Holocene and Last Interglacial cloudiness in eastern Baffin Island, Arctic CanadaThis article is one of a series of papers published in this Special Issue on the theme Polar Climate Stability Network .GEOTOP Publication 2008-0027. |
title_sort |
holocene and last interglacial cloudiness in eastern baffin island, arctic canadathis article is one of a series of papers published in this special issue on the theme polar climate stability network .geotop publication 2008-0027. |
publisher |
Canadian Science Publishing |
publishDate |
2008 |
url |
http://dx.doi.org/10.1139/e08-053 http://www.nrcresearchpress.com/doi/full-xml/10.1139/E08-053 http://www.nrcresearchpress.com/doi/pdf/10.1139/E08-053 |
geographic |
Arctic Baffin Island Canada |
geographic_facet |
Arctic Baffin Island Canada |
genre |
Arctic Baffin Island Baffin Tundra |
genre_facet |
Arctic Baffin Island Baffin Tundra |
op_source |
Canadian Journal of Earth Sciences volume 45, issue 11, page 1221-1234 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e08-053 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
45 |
container_issue |
11 |
container_start_page |
1221 |
op_container_end_page |
1234 |
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1785568525497139200 |