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Prairie Grasses

Past and Potential for Ontario's Natural Heritage - Page 5

Conservation significance - Tallgrass communities comprise some of the most endangered communities in Ontario and in North America. As this habitat has become rare, so too have the wildlife species that rely on it. To date, over 150 vascular plant species associated with tallgrass communities in Ontario have been granted one or more official rare designations at the global, national and/or provincial levels (Rodger 1998). Appendix 1 lists provincial rarity rankings of Ontario tallgrass Poaceae. A growing number of tallgrass-associated faunal species are also rare (COSEWIC 1998; Rodger 1998), and several, such as the karner blue butterfly and greater prairie chicken, are extirpated from Canada (COSEWIC 1998).

Page 1 2 3 4 5 6 7 8 9 10 References Appendix 1

| What are plant families? | How do we distinguish them? | How and why do we study them? | Selected vascular plant families of Ontario | Reading List | Course outline |

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Page design © 1999 T. A. Dickinson; essay text and illustrations © 1998 Lindsay Rodger except as noted.
Please send your comments to tim.dickinson@utoronto.ca; last updated 7-May-99

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