Ecological Characteristics of Streams in the Barrenlands near Lac de Gras, N.W.T., Canada
ABSTRACT. We examined spatiotemporal variation in the physical, chemical, and biological characteristics of pristine streams that represent a range of conditions near Lac de Gras in the Barrenlands region of the Northwest Territories, Canada. Principal component analysis organized streams into four...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.572.2317 2023-05-15T14:19:42+02:00 Ecological Characteristics of Streams in the Barrenlands near Lac de Gras, N.W.T., Canada Nicholas E. Jones William M. Tonn Garry J. Scrimgeour Chris Katopodis The Pennsylvania State University CiteSeerX Archives 2002 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.572.2317 http://pubs.aina.ucalgary.ca/arctic/Arctic56-3-249.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.572.2317 http://pubs.aina.ucalgary.ca/arctic/Arctic56-3-249.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.aina.ucalgary.ca/arctic/Arctic56-3-249.pdf Key words streams Barrenlands tundra reference condition spatiotemporal variation lake-outlet arctic grayling Thymallus arcticus drift Lac de Gras Northwest Territories text 2002 ftciteseerx 2016-01-08T12:35:01Z ABSTRACT. We examined spatiotemporal variation in the physical, chemical, and biological characteristics of pristine streams that represent a range of conditions near Lac de Gras in the Barrenlands region of the Northwest Territories, Canada. Principal component analysis organized streams into four groups on the basis of seven physical characteristics. Despite broad differences among groups in physical characteristics, variation in chemical and biological characteristics was generally not large, with only pH and coarse particulate organic matter differing among the four groups. Nevertheless, several chemical and biological variables were correlated with physical characteristics, particularly measures of stream size (bankfull width and depth, drainage area, and stream discharge). Annual variability in climate affected stream temperature and discharge and influenced several biotic characteristics, particularly the growth of young-of-the-year arctic grayling (Thymallus arcticus). Barrenland streams share basic characteristics of Alaskan tundra streams, as a result of similar climatic regimes. Key differences between the two areas, however, appear related to the lake-outlet nature of the Barrenland streams, which may contribute to higher growth of young-of-the-year arctic grayling than would be expected from regional climate. Text Arctic Arctic grayling Arctic Northwest Territories Thymallus arcticus Tundra Unknown Arctic Canada Lac de Gras ENVELOPE(-110.501,-110.501,64.500,64.500) Northwest Territories |
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ftciteseerx |
language |
English |
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Key words streams Barrenlands tundra reference condition spatiotemporal variation lake-outlet arctic grayling Thymallus arcticus drift Lac de Gras Northwest Territories |
spellingShingle |
Key words streams Barrenlands tundra reference condition spatiotemporal variation lake-outlet arctic grayling Thymallus arcticus drift Lac de Gras Northwest Territories Nicholas E. Jones William M. Tonn Garry J. Scrimgeour Chris Katopodis Ecological Characteristics of Streams in the Barrenlands near Lac de Gras, N.W.T., Canada |
topic_facet |
Key words streams Barrenlands tundra reference condition spatiotemporal variation lake-outlet arctic grayling Thymallus arcticus drift Lac de Gras Northwest Territories |
description |
ABSTRACT. We examined spatiotemporal variation in the physical, chemical, and biological characteristics of pristine streams that represent a range of conditions near Lac de Gras in the Barrenlands region of the Northwest Territories, Canada. Principal component analysis organized streams into four groups on the basis of seven physical characteristics. Despite broad differences among groups in physical characteristics, variation in chemical and biological characteristics was generally not large, with only pH and coarse particulate organic matter differing among the four groups. Nevertheless, several chemical and biological variables were correlated with physical characteristics, particularly measures of stream size (bankfull width and depth, drainage area, and stream discharge). Annual variability in climate affected stream temperature and discharge and influenced several biotic characteristics, particularly the growth of young-of-the-year arctic grayling (Thymallus arcticus). Barrenland streams share basic characteristics of Alaskan tundra streams, as a result of similar climatic regimes. Key differences between the two areas, however, appear related to the lake-outlet nature of the Barrenland streams, which may contribute to higher growth of young-of-the-year arctic grayling than would be expected from regional climate. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Nicholas E. Jones William M. Tonn Garry J. Scrimgeour Chris Katopodis |
author_facet |
Nicholas E. Jones William M. Tonn Garry J. Scrimgeour Chris Katopodis |
author_sort |
Nicholas E. Jones |
title |
Ecological Characteristics of Streams in the Barrenlands near Lac de Gras, N.W.T., Canada |
title_short |
Ecological Characteristics of Streams in the Barrenlands near Lac de Gras, N.W.T., Canada |
title_full |
Ecological Characteristics of Streams in the Barrenlands near Lac de Gras, N.W.T., Canada |
title_fullStr |
Ecological Characteristics of Streams in the Barrenlands near Lac de Gras, N.W.T., Canada |
title_full_unstemmed |
Ecological Characteristics of Streams in the Barrenlands near Lac de Gras, N.W.T., Canada |
title_sort |
ecological characteristics of streams in the barrenlands near lac de gras, n.w.t., canada |
publishDate |
2002 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.572.2317 http://pubs.aina.ucalgary.ca/arctic/Arctic56-3-249.pdf |
long_lat |
ENVELOPE(-110.501,-110.501,64.500,64.500) |
geographic |
Arctic Canada Lac de Gras Northwest Territories |
geographic_facet |
Arctic Canada Lac de Gras Northwest Territories |
genre |
Arctic Arctic grayling Arctic Northwest Territories Thymallus arcticus Tundra |
genre_facet |
Arctic Arctic grayling Arctic Northwest Territories Thymallus arcticus Tundra |
op_source |
http://pubs.aina.ucalgary.ca/arctic/Arctic56-3-249.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.572.2317 http://pubs.aina.ucalgary.ca/arctic/Arctic56-3-249.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766291459974103040 |