Holocene Insect Fossils from Two Sites at Ennadai Lake, Keewatin, Northwest Territories, Canada
Abstract Ennadai Lake, in the forest-tundra ecotonal region of Keewatin, Northwest Territories, Canada, has been the subject of several paleoecological investigations (palynology, plant macrofossils, fossil soils). This study concerns Holocene insect fossils at Ennadai, a new approach in a region sh...
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Cambridge University Press (CUP)
1982
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crcambridgeupr:10.1016/0033-5894(82)90029-1 2024-06-09T07:47:26+00:00 Holocene Insect Fossils from Two Sites at Ennadai Lake, Keewatin, Northwest Territories, Canada Elias, Scott A. 1982 http://dx.doi.org/10.1016/0033-5894(82)90029-1 http://api.elsevier.com/content/article/PII:0033589482900291?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589482900291?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400022250 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 17, issue 3, page 371-390 ISSN 0033-5894 1096-0287 journal-article 1982 crcambridgeupr https://doi.org/10.1016/0033-5894(82)90029-1 2024-05-15T13:13:58Z Abstract Ennadai Lake, in the forest-tundra ecotonal region of Keewatin, Northwest Territories, Canada, has been the subject of several paleoecological investigations (palynology, plant macrofossils, fossil soils). This study concerns Holocene insect fossils at Ennadai, a new approach in a region shown to be sensitive to climatic change. The Ennadai I site yielded 53 taxa, representing 13 families of Coleoptera and 7 families of other insects and arachnids, including abundant ants. These fossils range in age from about 6300 to 630 yr B.P. The Ennadai II site produced fossils of 58 taxa, including 13 beetle families and 15 families of other arthropods, ranging in age from 4700 to 870 yr B.P. The insect evidence suggests the presence of trees in the Ennadai region from 6000 to 2200 yr B.P. A conifer pollen decline from 4800 to 4500 yr B.P. at Ennadai has previously been interpreted as an opening up or retreat of forest in response to climatic cooling, but the insect fossils reveal the continued presence of trees during this interval. Both insect assemblages suggest trends of forest retreat and tundra expansion between about 2200 and 1500 yr B.P., presumably due to climatic cooling, with a return of woodland by about 1000 yr B.P. Article in Journal/Newspaper Keewatin Northwest Territories Tundra Cambridge University Press Canada Ennadai ENVELOPE(-100.884,-100.884,61.134,61.134) Ennadai Lake ENVELOPE(-101.333,-101.333,60.967,60.967) Northwest Territories Quaternary Research 17 3 371 390 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
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English |
description |
Abstract Ennadai Lake, in the forest-tundra ecotonal region of Keewatin, Northwest Territories, Canada, has been the subject of several paleoecological investigations (palynology, plant macrofossils, fossil soils). This study concerns Holocene insect fossils at Ennadai, a new approach in a region shown to be sensitive to climatic change. The Ennadai I site yielded 53 taxa, representing 13 families of Coleoptera and 7 families of other insects and arachnids, including abundant ants. These fossils range in age from about 6300 to 630 yr B.P. The Ennadai II site produced fossils of 58 taxa, including 13 beetle families and 15 families of other arthropods, ranging in age from 4700 to 870 yr B.P. The insect evidence suggests the presence of trees in the Ennadai region from 6000 to 2200 yr B.P. A conifer pollen decline from 4800 to 4500 yr B.P. at Ennadai has previously been interpreted as an opening up or retreat of forest in response to climatic cooling, but the insect fossils reveal the continued presence of trees during this interval. Both insect assemblages suggest trends of forest retreat and tundra expansion between about 2200 and 1500 yr B.P., presumably due to climatic cooling, with a return of woodland by about 1000 yr B.P. |
format |
Article in Journal/Newspaper |
author |
Elias, Scott A. |
spellingShingle |
Elias, Scott A. Holocene Insect Fossils from Two Sites at Ennadai Lake, Keewatin, Northwest Territories, Canada |
author_facet |
Elias, Scott A. |
author_sort |
Elias, Scott A. |
title |
Holocene Insect Fossils from Two Sites at Ennadai Lake, Keewatin, Northwest Territories, Canada |
title_short |
Holocene Insect Fossils from Two Sites at Ennadai Lake, Keewatin, Northwest Territories, Canada |
title_full |
Holocene Insect Fossils from Two Sites at Ennadai Lake, Keewatin, Northwest Territories, Canada |
title_fullStr |
Holocene Insect Fossils from Two Sites at Ennadai Lake, Keewatin, Northwest Territories, Canada |
title_full_unstemmed |
Holocene Insect Fossils from Two Sites at Ennadai Lake, Keewatin, Northwest Territories, Canada |
title_sort |
holocene insect fossils from two sites at ennadai lake, keewatin, northwest territories, canada |
publisher |
Cambridge University Press (CUP) |
publishDate |
1982 |
url |
http://dx.doi.org/10.1016/0033-5894(82)90029-1 http://api.elsevier.com/content/article/PII:0033589482900291?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589482900291?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400022250 |
long_lat |
ENVELOPE(-100.884,-100.884,61.134,61.134) ENVELOPE(-101.333,-101.333,60.967,60.967) |
geographic |
Canada Ennadai Ennadai Lake Northwest Territories |
geographic_facet |
Canada Ennadai Ennadai Lake Northwest Territories |
genre |
Keewatin Northwest Territories Tundra |
genre_facet |
Keewatin Northwest Territories Tundra |
op_source |
Quaternary Research volume 17, issue 3, page 371-390 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/0033-5894(82)90029-1 |
container_title |
Quaternary Research |
container_volume |
17 |
container_issue |
3 |
container_start_page |
371 |
op_container_end_page |
390 |
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1801378518828843008 |