The phytogeography of rare vascular plants in Ontario and its bearing on plant conservation
The phytogeographic patterns displayed by the 550 rare vascular plant taxa in Ontario, including 349 that are rare nationally, are correlated with counties, site regions, and floristic provinces. Rare taxa are concentrated in southwestern Ontario decreasing northward, with secondary concentrations a...
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Canadian Science Publishing
1992
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crcansciencepubl:10.1139/b92-062 2023-12-17T10:26:16+01:00 The phytogeography of rare vascular plants in Ontario and its bearing on plant conservation Argus, George W. 1992 http://dx.doi.org/10.1139/b92-062 http://www.nrcresearchpress.com/doi/pdf/10.1139/b92-062 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Botany volume 70, issue 3, page 469-490 ISSN 0008-4026 Plant Science journal-article 1992 crcansciencepubl https://doi.org/10.1139/b92-062 2023-11-19T13:38:39Z The phytogeographic patterns displayed by the 550 rare vascular plant taxa in Ontario, including 349 that are rare nationally, are correlated with counties, site regions, and floristic provinces. Rare taxa are concentrated in southwestern Ontario decreasing northward, with secondary concentrations along the Hudson Bay coast. Rare taxa in Ontario are predominantly peripheral taxa, which have their main ranges outside of Ontario. Many of these taxa, however, have a high Canadian conservation priority because they are also at risk in adjacent states or provinces. Rare taxa with Appalachian and Coastal Plain affinities are most common in southwestern Ontario. Arctic and boreal affinities predominate in Northern Ontario. These patterns are correlated with temperature and moisture parameters, which are incorporated with the Hills' site regions classification. Most high conservation priority taxa occur in the Carolinian region, the most highly settled and most highly agriculturalized part of the province. There is an urgent need for conservation of the remaining forest and wetlands in this region. The fragmentary ecosystems still remaining must be protected from further development. There is a need to study the correlation of rare plant occurrences with existing parks and reserves throughout the province to facilitate the identification of priority regions for protection. Key words: rare plants, phytogeography, conservation, Ontario. Article in Journal/Newspaper Arctic Hudson Bay Canadian Science Publishing (via Crossref) Arctic Hudson Bay Hudson Canadian Journal of Botany 70 3 469 490 |
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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 Argus, George W. The phytogeography of rare vascular plants in Ontario and its bearing on plant conservation |
topic_facet |
Plant Science |
description |
The phytogeographic patterns displayed by the 550 rare vascular plant taxa in Ontario, including 349 that are rare nationally, are correlated with counties, site regions, and floristic provinces. Rare taxa are concentrated in southwestern Ontario decreasing northward, with secondary concentrations along the Hudson Bay coast. Rare taxa in Ontario are predominantly peripheral taxa, which have their main ranges outside of Ontario. Many of these taxa, however, have a high Canadian conservation priority because they are also at risk in adjacent states or provinces. Rare taxa with Appalachian and Coastal Plain affinities are most common in southwestern Ontario. Arctic and boreal affinities predominate in Northern Ontario. These patterns are correlated with temperature and moisture parameters, which are incorporated with the Hills' site regions classification. Most high conservation priority taxa occur in the Carolinian region, the most highly settled and most highly agriculturalized part of the province. There is an urgent need for conservation of the remaining forest and wetlands in this region. The fragmentary ecosystems still remaining must be protected from further development. There is a need to study the correlation of rare plant occurrences with existing parks and reserves throughout the province to facilitate the identification of priority regions for protection. Key words: rare plants, phytogeography, conservation, Ontario. |
format |
Article in Journal/Newspaper |
author |
Argus, George W. |
author_facet |
Argus, George W. |
author_sort |
Argus, George W. |
title |
The phytogeography of rare vascular plants in Ontario and its bearing on plant conservation |
title_short |
The phytogeography of rare vascular plants in Ontario and its bearing on plant conservation |
title_full |
The phytogeography of rare vascular plants in Ontario and its bearing on plant conservation |
title_fullStr |
The phytogeography of rare vascular plants in Ontario and its bearing on plant conservation |
title_full_unstemmed |
The phytogeography of rare vascular plants in Ontario and its bearing on plant conservation |
title_sort |
phytogeography of rare vascular plants in ontario and its bearing on plant conservation |
publisher |
Canadian Science Publishing |
publishDate |
1992 |
url |
http://dx.doi.org/10.1139/b92-062 http://www.nrcresearchpress.com/doi/pdf/10.1139/b92-062 |
geographic |
Arctic Hudson Bay Hudson |
geographic_facet |
Arctic Hudson Bay Hudson |
genre |
Arctic Hudson Bay |
genre_facet |
Arctic Hudson Bay |
op_source |
Canadian Journal of Botany volume 70, issue 3, page 469-490 ISSN 0008-4026 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/b92-062 |
container_title |
Canadian Journal of Botany |
container_volume |
70 |
container_issue |
3 |
container_start_page |
469 |
op_container_end_page |
490 |
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1785577979405926400 |