Représentation pollinique actuelle à la limite des arbres au Nouveau-Québec
Modern pollen spectra from a series of lakes in northwestern Quebec reflect the major vegetation zones of the forest–tundra transition from latitude 55°N to 59°N. Shrub tundra samples are dominated by Betula and herb pollen, whereas Picea percentages are between 10 and 20%. Lichen woodland samples c...
Published in: | Canadian Journal of Earth Sciences |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Canadian Science Publishing
1991
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Online Access: | http://dx.doi.org/10.1139/e91-055 http://www.nrcresearchpress.com/doi/pdf/10.1139/e91-055 |
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crcansciencepubl:10.1139/e91-055 2024-09-15T18:39:30+00:00 Représentation pollinique actuelle à la limite des arbres au Nouveau-Québec Gajewski, K. 1991 http://dx.doi.org/10.1139/e91-055 http://www.nrcresearchpress.com/doi/pdf/10.1139/e91-055 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 28, issue 4, page 643-648 ISSN 0008-4077 1480-3313 journal-article 1991 crcansciencepubl https://doi.org/10.1139/e91-055 2024-08-01T04:10:04Z Modern pollen spectra from a series of lakes in northwestern Quebec reflect the major vegetation zones of the forest–tundra transition from latitude 55°N to 59°N. Shrub tundra samples are dominated by Betula and herb pollen, whereas Picea percentages are between 10 and 20%. Lichen woodland samples can contain over 60% Picea, with Betula and Alnus crispa each less than 20%. Pollen assemblages from the shrub subzone of the forest–tundra resemble those of the shrub tundra, while those from the forest subzone resemble lichen woodland samples. Maximum percentages of Alnus crispa are found in the forest–tundra. Classification of the samples using cluster analysis and an ordination by principal coordinates analysis suggest that densely and sparsely forested regions can be discriminated. Article in Journal/Newspaper Tundra Canadian Science Publishing Canadian Journal of Earth Sciences 28 4 643 648 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Modern pollen spectra from a series of lakes in northwestern Quebec reflect the major vegetation zones of the forest–tundra transition from latitude 55°N to 59°N. Shrub tundra samples are dominated by Betula and herb pollen, whereas Picea percentages are between 10 and 20%. Lichen woodland samples can contain over 60% Picea, with Betula and Alnus crispa each less than 20%. Pollen assemblages from the shrub subzone of the forest–tundra resemble those of the shrub tundra, while those from the forest subzone resemble lichen woodland samples. Maximum percentages of Alnus crispa are found in the forest–tundra. Classification of the samples using cluster analysis and an ordination by principal coordinates analysis suggest that densely and sparsely forested regions can be discriminated. |
format |
Article in Journal/Newspaper |
author |
Gajewski, K. |
spellingShingle |
Gajewski, K. Représentation pollinique actuelle à la limite des arbres au Nouveau-Québec |
author_facet |
Gajewski, K. |
author_sort |
Gajewski, K. |
title |
Représentation pollinique actuelle à la limite des arbres au Nouveau-Québec |
title_short |
Représentation pollinique actuelle à la limite des arbres au Nouveau-Québec |
title_full |
Représentation pollinique actuelle à la limite des arbres au Nouveau-Québec |
title_fullStr |
Représentation pollinique actuelle à la limite des arbres au Nouveau-Québec |
title_full_unstemmed |
Représentation pollinique actuelle à la limite des arbres au Nouveau-Québec |
title_sort |
représentation pollinique actuelle à la limite des arbres au nouveau-québec |
publisher |
Canadian Science Publishing |
publishDate |
1991 |
url |
http://dx.doi.org/10.1139/e91-055 http://www.nrcresearchpress.com/doi/pdf/10.1139/e91-055 |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
Canadian Journal of Earth Sciences volume 28, issue 4, page 643-648 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e91-055 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
28 |
container_issue |
4 |
container_start_page |
643 |
op_container_end_page |
648 |
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1810483867868463104 |