Composition and spatial structure of plant communities on southeastern Victoria Island, arctic Canada
We used multivariate methods to investigate the composition and spatial organisation of tundra plant communities in the Wellington Bay region of southeastern Victoria Island (69°N, 106°W). Ordination and classification of sites at an intermediate scale (≈ 1 ha) were conducted using principal compone...
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1994
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crcansciencepubl:10.1139/b94-154 2023-12-17T10:25:21+01:00 Composition and spatial structure of plant communities on southeastern Victoria Island, arctic Canada Schaefer, James A. Messier, François 1994 http://dx.doi.org/10.1139/b94-154 http://www.nrcresearchpress.com/doi/pdf/10.1139/b94-154 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Botany volume 72, issue 9, page 1264-1272 ISSN 0008-4026 Plant Science journal-article 1994 crcansciencepubl https://doi.org/10.1139/b94-154 2023-11-19T13:38:55Z We used multivariate methods to investigate the composition and spatial organisation of tundra plant communities in the Wellington Bay region of southeastern Victoria Island (69°N, 106°W). Ordination and classification of sites at an intermediate scale (≈ 1 ha) were conducted using principal components analysis and sums of squares agglomerative clustering on a matrix of standardized chord distances. The findings suggested eight vegetation classes. These communities are described floristically. At this spatial scale, the vegetation showed correspondence to elevation, slope, and thickness of soil, but not to aspect. The spatial patterns of multiple plant species and physical variables (i.e., slope of terrain and thickness of soil) were examined using multiscale ordination and double logarithmic regressions of variance on distance, respectively. Multiscale ordination revealed ever-increasing plant heterogeneity with distance (0.25 – 1600 m) and suggested only weak general patterns at scales ≤ 200 m. Similarly, variance in the physical factors tended to increase continually with distance. Both the vegetation and physical environment thus appeared to be organised on gradients. Key words: Arctic, classification, ordination, spatial scale, tundra. Article in Journal/Newspaper Arctic Tundra Victoria Island victoria island Wellington Bay Canadian Science Publishing (via Crossref) Arctic Canada Wellington Bay ENVELOPE(-106.586,-106.586,69.334,69.334) Canadian Journal of Botany 72 9 1264 1272 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
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crcansciencepubl |
language |
English |
topic |
Plant Science |
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Plant Science Schaefer, James A. Messier, François Composition and spatial structure of plant communities on southeastern Victoria Island, arctic Canada |
topic_facet |
Plant Science |
description |
We used multivariate methods to investigate the composition and spatial organisation of tundra plant communities in the Wellington Bay region of southeastern Victoria Island (69°N, 106°W). Ordination and classification of sites at an intermediate scale (≈ 1 ha) were conducted using principal components analysis and sums of squares agglomerative clustering on a matrix of standardized chord distances. The findings suggested eight vegetation classes. These communities are described floristically. At this spatial scale, the vegetation showed correspondence to elevation, slope, and thickness of soil, but not to aspect. The spatial patterns of multiple plant species and physical variables (i.e., slope of terrain and thickness of soil) were examined using multiscale ordination and double logarithmic regressions of variance on distance, respectively. Multiscale ordination revealed ever-increasing plant heterogeneity with distance (0.25 – 1600 m) and suggested only weak general patterns at scales ≤ 200 m. Similarly, variance in the physical factors tended to increase continually with distance. Both the vegetation and physical environment thus appeared to be organised on gradients. Key words: Arctic, classification, ordination, spatial scale, tundra. |
format |
Article in Journal/Newspaper |
author |
Schaefer, James A. Messier, François |
author_facet |
Schaefer, James A. Messier, François |
author_sort |
Schaefer, James A. |
title |
Composition and spatial structure of plant communities on southeastern Victoria Island, arctic Canada |
title_short |
Composition and spatial structure of plant communities on southeastern Victoria Island, arctic Canada |
title_full |
Composition and spatial structure of plant communities on southeastern Victoria Island, arctic Canada |
title_fullStr |
Composition and spatial structure of plant communities on southeastern Victoria Island, arctic Canada |
title_full_unstemmed |
Composition and spatial structure of plant communities on southeastern Victoria Island, arctic Canada |
title_sort |
composition and spatial structure of plant communities on southeastern victoria island, arctic canada |
publisher |
Canadian Science Publishing |
publishDate |
1994 |
url |
http://dx.doi.org/10.1139/b94-154 http://www.nrcresearchpress.com/doi/pdf/10.1139/b94-154 |
long_lat |
ENVELOPE(-106.586,-106.586,69.334,69.334) |
geographic |
Arctic Canada Wellington Bay |
geographic_facet |
Arctic Canada Wellington Bay |
genre |
Arctic Tundra Victoria Island victoria island Wellington Bay |
genre_facet |
Arctic Tundra Victoria Island victoria island Wellington Bay |
op_source |
Canadian Journal of Botany volume 72, issue 9, page 1264-1272 ISSN 0008-4026 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/b94-154 |
container_title |
Canadian Journal of Botany |
container_volume |
72 |
container_issue |
9 |
container_start_page |
1264 |
op_container_end_page |
1272 |
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1785575880876097536 |