Vegetation studies at Polar Bear Pass, Bathurst Island, N.W.T. II. Vegetation–environment relationships
Vegetation–environment relationships are defined with the aid of principal-components analysis and canonical correlation analysis. In both the uplands and lowlands a moisture gradient, determined by measuring gravimetric moisture and indicated by organic carbon, is the most important environmental i...
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Language: | English |
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Canadian Science Publishing
1983
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Online Access: | http://dx.doi.org/10.1139/b83-175 http://www.nrcresearchpress.com/doi/pdf/10.1139/b83-175 |
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crcansciencepubl:10.1139/b83-175 2024-05-19T07:38:12+00:00 Vegetation studies at Polar Bear Pass, Bathurst Island, N.W.T. II. Vegetation–environment relationships Sheard, J. W. Geale, Dorothy W. 1983 http://dx.doi.org/10.1139/b83-175 http://www.nrcresearchpress.com/doi/pdf/10.1139/b83-175 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Botany volume 61, issue 6, page 1637-1646 ISSN 0008-4026 journal-article 1983 crcansciencepubl https://doi.org/10.1139/b83-175 2024-05-02T06:51:27Z Vegetation–environment relationships are defined with the aid of principal-components analysis and canonical correlation analysis. In both the uplands and lowlands a moisture gradient, determined by measuring gravimetric moisture and indicated by organic carbon, is the most important environmental influence on the vegetation. In the uplands this gradient is also associated with snow depth (drifting) and in the lowlands with conductivity. The second environmental gradient in the uplands is associated with depth to permafrost and its soil textural correlates. Thus soil texture, independent of its effect on soil moisture status, influences the distribution of plant communities. In the lowlands the second environmental gradient is less clear but is also associated with depth to permafrost and, in addition, elevation and CaCO 3 equivalent. Canonical correlation analysis shows that the components extracted by principal-components analysis of the vegetation data did not conform to the important trends of variation in the environmental data. Principal-components analysis is nevertheless an essential means of data reduction prior to the application of canonical correlation. The statistical model used in the study has potential advantages over the independent use of either principal-components analysis or canonical correlation. Article in Journal/Newspaper Bathurst Island permafrost Canadian Science Publishing Canadian Journal of Botany 61 6 1637 1646 |
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Open Polar |
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Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
Vegetation–environment relationships are defined with the aid of principal-components analysis and canonical correlation analysis. In both the uplands and lowlands a moisture gradient, determined by measuring gravimetric moisture and indicated by organic carbon, is the most important environmental influence on the vegetation. In the uplands this gradient is also associated with snow depth (drifting) and in the lowlands with conductivity. The second environmental gradient in the uplands is associated with depth to permafrost and its soil textural correlates. Thus soil texture, independent of its effect on soil moisture status, influences the distribution of plant communities. In the lowlands the second environmental gradient is less clear but is also associated with depth to permafrost and, in addition, elevation and CaCO 3 equivalent. Canonical correlation analysis shows that the components extracted by principal-components analysis of the vegetation data did not conform to the important trends of variation in the environmental data. Principal-components analysis is nevertheless an essential means of data reduction prior to the application of canonical correlation. The statistical model used in the study has potential advantages over the independent use of either principal-components analysis or canonical correlation. |
format |
Article in Journal/Newspaper |
author |
Sheard, J. W. Geale, Dorothy W. |
spellingShingle |
Sheard, J. W. Geale, Dorothy W. Vegetation studies at Polar Bear Pass, Bathurst Island, N.W.T. II. Vegetation–environment relationships |
author_facet |
Sheard, J. W. Geale, Dorothy W. |
author_sort |
Sheard, J. W. |
title |
Vegetation studies at Polar Bear Pass, Bathurst Island, N.W.T. II. Vegetation–environment relationships |
title_short |
Vegetation studies at Polar Bear Pass, Bathurst Island, N.W.T. II. Vegetation–environment relationships |
title_full |
Vegetation studies at Polar Bear Pass, Bathurst Island, N.W.T. II. Vegetation–environment relationships |
title_fullStr |
Vegetation studies at Polar Bear Pass, Bathurst Island, N.W.T. II. Vegetation–environment relationships |
title_full_unstemmed |
Vegetation studies at Polar Bear Pass, Bathurst Island, N.W.T. II. Vegetation–environment relationships |
title_sort |
vegetation studies at polar bear pass, bathurst island, n.w.t. ii. vegetation–environment relationships |
publisher |
Canadian Science Publishing |
publishDate |
1983 |
url |
http://dx.doi.org/10.1139/b83-175 http://www.nrcresearchpress.com/doi/pdf/10.1139/b83-175 |
genre |
Bathurst Island permafrost |
genre_facet |
Bathurst Island permafrost |
op_source |
Canadian Journal of Botany volume 61, issue 6, page 1637-1646 ISSN 0008-4026 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/b83-175 |
container_title |
Canadian Journal of Botany |
container_volume |
61 |
container_issue |
6 |
container_start_page |
1637 |
op_container_end_page |
1646 |
_version_ |
1799477607661568000 |