Contemporary pollen spectra in the James Bay Lowland, Canada, and comparison with other forest-tundra assemblages
Contemporary pollen spectra obtained from twenty-eight sites in the southwestern James Bay area were examined as an aid to the interpretation of postglacial pollen diagrams. Picea is the dominant pollen type. Pinus banksiana and Betula pollen are prominent, with the shrub birches contributing most o...
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Les Presses de l’Université de Montréal
1980
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Online Access: | http://id.erudit.org/iderudit/1000415ar https://doi.org/10.7202/1000415ar |
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fterudit:oai:erudit.org:1000415ar 2023-05-15T18:40:10+02:00 Contemporary pollen spectra in the James Bay Lowland, Canada, and comparison with other forest-tundra assemblages Farley-Gill, L. D. 1980 http://id.erudit.org/iderudit/1000415ar https://doi.org/10.7202/1000415ar en eng Les Presses de l’Université de Montréal Érudit Géographie physique et Quaternaire vol. 34 no. 3 (1980) http://id.erudit.org/iderudit/1000415ar doi:10.7202/1000415ar Tous droits réservés © Les Presses de l’Université de Montréal, 1981 text 1980 fterudit https://doi.org/10.7202/1000415ar 2022-09-24T23:14:20Z Contemporary pollen spectra obtained from twenty-eight sites in the southwestern James Bay area were examined as an aid to the interpretation of postglacial pollen diagrams. Picea is the dominant pollen type. Pinus banksiana and Betula pollen are prominent, with the shrub birches contributing most of the latter. Other tree genera (Larix, Abies, Populus) extant in the area are underrepresented in the pollen assemblages. Among the shrub taxa present, pollen of two species of Alnus, A. crispa and A. rugosa, are regionally represented. Salix and Myrica pollen are notable locally at sites where these plants occur. Ericaceae values vary according to the type of sampling site. Cyperaceae and Sphagnum values fluctuate greatly depending on the proximity of these taxa to the sampling site. Pollen assemblages of the major taxa in six data sets extending from the forest-tundra of Saskatchewan to the eastern James Bay area in Québec were examined. Comparison yielded similar values of most genera. Local, regional and extra-regional influences, as well as over- and underrepresentation of individual taxa appear to apply uniformly over the entire area thereby providing pollen spectra representative of the forest-tundra of central Canada. Nous avons étudié les spectres polliniques contemporains de 28 sites au sud-ouest de la baie de James afin de faciliter l’interprétation des diagrammes polliniques postglaciaires. La présence de Picea est dominante alors que la proportion de Pinus banksiana et de Betula (surtout comme arbuste) est assez forte. Certaines espèces d’arbres (des genres Larix, Abies, Populus), qui croissent encore dans la région, sont sous-représentées dans les assemblages. Parmi les arbustes, le pollen de deux espèces d’Alnus, A. crispa et A. rugosa, est représenté à l’échelle régionale. Nous avons noté la présence locale de Salix et de Myrica là où poussent ces espèces. La fréquence des Éricacées varie selon le site de prélèvement. La représentation du pollen de Sphagnum et de Cypéracées varie beaucoup selon la ... Text Tundra James Bay Érudit.org (Université Montréal) Canada Rugosa ENVELOPE(-61.250,-61.250,-62.633,-62.633) Géographie physique et Quaternaire 34 3 321 334 |
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Érudit.org (Université Montréal) |
op_collection_id |
fterudit |
language |
English |
description |
Contemporary pollen spectra obtained from twenty-eight sites in the southwestern James Bay area were examined as an aid to the interpretation of postglacial pollen diagrams. Picea is the dominant pollen type. Pinus banksiana and Betula pollen are prominent, with the shrub birches contributing most of the latter. Other tree genera (Larix, Abies, Populus) extant in the area are underrepresented in the pollen assemblages. Among the shrub taxa present, pollen of two species of Alnus, A. crispa and A. rugosa, are regionally represented. Salix and Myrica pollen are notable locally at sites where these plants occur. Ericaceae values vary according to the type of sampling site. Cyperaceae and Sphagnum values fluctuate greatly depending on the proximity of these taxa to the sampling site. Pollen assemblages of the major taxa in six data sets extending from the forest-tundra of Saskatchewan to the eastern James Bay area in Québec were examined. Comparison yielded similar values of most genera. Local, regional and extra-regional influences, as well as over- and underrepresentation of individual taxa appear to apply uniformly over the entire area thereby providing pollen spectra representative of the forest-tundra of central Canada. Nous avons étudié les spectres polliniques contemporains de 28 sites au sud-ouest de la baie de James afin de faciliter l’interprétation des diagrammes polliniques postglaciaires. La présence de Picea est dominante alors que la proportion de Pinus banksiana et de Betula (surtout comme arbuste) est assez forte. Certaines espèces d’arbres (des genres Larix, Abies, Populus), qui croissent encore dans la région, sont sous-représentées dans les assemblages. Parmi les arbustes, le pollen de deux espèces d’Alnus, A. crispa et A. rugosa, est représenté à l’échelle régionale. Nous avons noté la présence locale de Salix et de Myrica là où poussent ces espèces. La fréquence des Éricacées varie selon le site de prélèvement. La représentation du pollen de Sphagnum et de Cypéracées varie beaucoup selon la ... |
format |
Text |
author |
Farley-Gill, L. D. |
spellingShingle |
Farley-Gill, L. D. Contemporary pollen spectra in the James Bay Lowland, Canada, and comparison with other forest-tundra assemblages |
author_facet |
Farley-Gill, L. D. |
author_sort |
Farley-Gill, L. D. |
title |
Contemporary pollen spectra in the James Bay Lowland, Canada, and comparison with other forest-tundra assemblages |
title_short |
Contemporary pollen spectra in the James Bay Lowland, Canada, and comparison with other forest-tundra assemblages |
title_full |
Contemporary pollen spectra in the James Bay Lowland, Canada, and comparison with other forest-tundra assemblages |
title_fullStr |
Contemporary pollen spectra in the James Bay Lowland, Canada, and comparison with other forest-tundra assemblages |
title_full_unstemmed |
Contemporary pollen spectra in the James Bay Lowland, Canada, and comparison with other forest-tundra assemblages |
title_sort |
contemporary pollen spectra in the james bay lowland, canada, and comparison with other forest-tundra assemblages |
publisher |
Les Presses de l’Université de Montréal |
publishDate |
1980 |
url |
http://id.erudit.org/iderudit/1000415ar https://doi.org/10.7202/1000415ar |
long_lat |
ENVELOPE(-61.250,-61.250,-62.633,-62.633) |
geographic |
Canada Rugosa |
geographic_facet |
Canada Rugosa |
genre |
Tundra James Bay |
genre_facet |
Tundra James Bay |
op_relation |
Géographie physique et Quaternaire vol. 34 no. 3 (1980) http://id.erudit.org/iderudit/1000415ar doi:10.7202/1000415ar |
op_rights |
Tous droits réservés © Les Presses de l’Université de Montréal, 1981 |
op_doi |
https://doi.org/10.7202/1000415ar |
container_title |
Géographie physique et Quaternaire |
container_volume |
34 |
container_issue |
3 |
container_start_page |
321 |
op_container_end_page |
334 |
_version_ |
1766229390353498112 |