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COSEWIC assessment and update status report on the Bluehearts in Canada
- Assessment Summary
- Executive Summary
- COSEWIC Mandate, Membership and Definitions
- Lists of Figures and Appendices
- Species Information
- Population Sizes and Trends
- Limiting Factors and Threats
- Special Significance of the Species
- Evaluation and Proposed Status
- Technical Summary
- Acknowledgements, Literature Cited, and The Author
- Appendix 1: Population Size and Trend of Bluehearts in Ontario
Buchnera americana is extant in 11 states from Ohio and Indiana to Georgia and Missouri (The Nature Conservancy 1997) (Figure 2). The areas of greatest concentration are in Tennessee, Kentucky, Arkansas and Missouri (Brownell 1981, The Nature Conservancy 1997). It is considered to be extirpated from Pennsylvania (Rhoads and Klein 1993), Michigan, and New Jersey and a historical occurrence in D.C., Delaware, Maryland, North Carolina and New York (The Nature Conservancy 1997). Its status in 6 southern states is unknown.
Map from Brownell 1983.
In Canada, this species is confined to a 10 km stretch of Lake Huron shoreline in south- western Ontario (Figure 3). Its known geographical range in Ontario has not changed since 1981 when fairly extensive field studies were conducted in the Ipperwash/Port Franks area.
Map from White, Maher and Argus (1983).
- Date Modified: