The Post-glacial history of vegetation and climate at Ennadai Lake, Keewatin, and Lynn Lake, Manitoba (Canada)
Peat from Keewatin and Manitoba contained macrofossil and palynological evidence of former latitudinal movements of the forest — tundra boundary probably in response to the changing location of the mean summer position of the Arctic front. There was very rapid melting of the large late-Wisconsin ice...
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Copernicus Publications
1967
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Online Access: | https://doi.org/10.3285/eg.18.1.12 https://doaj.org/article/107d1c52e9284ea8ba0a5fcff6fc4ed7 |
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ftdoajarticles:oai:doaj.org/article:107d1c52e9284ea8ba0a5fcff6fc4ed7 2023-05-15T15:06:05+02:00 The Post-glacial history of vegetation and climate at Ennadai Lake, Keewatin, and Lynn Lake, Manitoba (Canada) H. Nichols 1967-12-01T00:00:00Z https://doi.org/10.3285/eg.18.1.12 https://doaj.org/article/107d1c52e9284ea8ba0a5fcff6fc4ed7 DE EN ger eng Copernicus Publications https://www.eg-quaternary-sci-j.net/18/176/1967/egqsj-18-176-1967.pdf https://doaj.org/toc/0424-7116 https://doaj.org/toc/2199-9090 doi:10.3285/eg.18.1.12 0424-7116 2199-9090 https://doaj.org/article/107d1c52e9284ea8ba0a5fcff6fc4ed7 Eiszeitalter und Gegenwart, Vol 18, Pp 176-197 (1967) Geology QE1-996.5 article 1967 ftdoajarticles https://doi.org/10.3285/eg.18.1.12 2022-12-31T03:54:28Z Peat from Keewatin and Manitoba contained macrofossil and palynological evidence of former latitudinal movements of the forest — tundra boundary probably in response to the changing location of the mean summer position of the Arctic front. There was very rapid melting of the large late-Wisconsin icesheet between 8000 and 6000 years B. P., and swift immigration of Picea, with no evidence of tundra vegetation after deglaciation. From 6000 to 3500 years B. P. the Boreal forest extended far north of its present limit, with a short-lived cooler phase about 5000 years ago. This generally warm period was followed by cooler and variable climatic episodes after 3500 B. P. and by a climatic deterioration about 2600 years ago. There was an amelioration between 1500 and 600 B. P., followed by a prolonged cold episode which terminated peat growth in the tundra. The approximate mean summer temperatures at Ennadai Lake have been estimated from the changing location of the northern limit of forest. The radiocarbon dates for these climatic events coincide with a number of changes recorded in the climatic history of northwest Europe. Article in Journal/Newspaper Arctic Keewatin Tundra Directory of Open Access Journals: DOAJ Articles Arctic Canada Ennadai ENVELOPE(-100.884,-100.884,61.134,61.134) Ennadai Lake ENVELOPE(-101.333,-101.333,60.967,60.967) E&G Quaternary Science Journal 18 1 176 197 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
German English |
topic |
Geology QE1-996.5 |
spellingShingle |
Geology QE1-996.5 H. Nichols The Post-glacial history of vegetation and climate at Ennadai Lake, Keewatin, and Lynn Lake, Manitoba (Canada) |
topic_facet |
Geology QE1-996.5 |
description |
Peat from Keewatin and Manitoba contained macrofossil and palynological evidence of former latitudinal movements of the forest — tundra boundary probably in response to the changing location of the mean summer position of the Arctic front. There was very rapid melting of the large late-Wisconsin icesheet between 8000 and 6000 years B. P., and swift immigration of Picea, with no evidence of tundra vegetation after deglaciation. From 6000 to 3500 years B. P. the Boreal forest extended far north of its present limit, with a short-lived cooler phase about 5000 years ago. This generally warm period was followed by cooler and variable climatic episodes after 3500 B. P. and by a climatic deterioration about 2600 years ago. There was an amelioration between 1500 and 600 B. P., followed by a prolonged cold episode which terminated peat growth in the tundra. The approximate mean summer temperatures at Ennadai Lake have been estimated from the changing location of the northern limit of forest. The radiocarbon dates for these climatic events coincide with a number of changes recorded in the climatic history of northwest Europe. |
format |
Article in Journal/Newspaper |
author |
H. Nichols |
author_facet |
H. Nichols |
author_sort |
H. Nichols |
title |
The Post-glacial history of vegetation and climate at Ennadai Lake, Keewatin, and Lynn Lake, Manitoba (Canada) |
title_short |
The Post-glacial history of vegetation and climate at Ennadai Lake, Keewatin, and Lynn Lake, Manitoba (Canada) |
title_full |
The Post-glacial history of vegetation and climate at Ennadai Lake, Keewatin, and Lynn Lake, Manitoba (Canada) |
title_fullStr |
The Post-glacial history of vegetation and climate at Ennadai Lake, Keewatin, and Lynn Lake, Manitoba (Canada) |
title_full_unstemmed |
The Post-glacial history of vegetation and climate at Ennadai Lake, Keewatin, and Lynn Lake, Manitoba (Canada) |
title_sort |
post-glacial history of vegetation and climate at ennadai lake, keewatin, and lynn lake, manitoba (canada) |
publisher |
Copernicus Publications |
publishDate |
1967 |
url |
https://doi.org/10.3285/eg.18.1.12 https://doaj.org/article/107d1c52e9284ea8ba0a5fcff6fc4ed7 |
long_lat |
ENVELOPE(-100.884,-100.884,61.134,61.134) ENVELOPE(-101.333,-101.333,60.967,60.967) |
geographic |
Arctic Canada Ennadai Ennadai Lake |
geographic_facet |
Arctic Canada Ennadai Ennadai Lake |
genre |
Arctic Keewatin Tundra |
genre_facet |
Arctic Keewatin Tundra |
op_source |
Eiszeitalter und Gegenwart, Vol 18, Pp 176-197 (1967) |
op_relation |
https://www.eg-quaternary-sci-j.net/18/176/1967/egqsj-18-176-1967.pdf https://doaj.org/toc/0424-7116 https://doaj.org/toc/2199-9090 doi:10.3285/eg.18.1.12 0424-7116 2199-9090 https://doaj.org/article/107d1c52e9284ea8ba0a5fcff6fc4ed7 |
op_doi |
https://doi.org/10.3285/eg.18.1.12 |
container_title |
E&G Quaternary Science Journal |
container_volume |
18 |
container_issue |
1 |
container_start_page |
176 |
op_container_end_page |
197 |
_version_ |
1766337745799610368 |