BC Conservation Data Centre: Conservation Status Report
Erigeron salishii
Salish daisy
| Scientific Name: | Erigeron salishii |
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| English Name: | Salish daisy |
| Provincial Status Summary | |
| Status: | S3S4 |
| Date Status Assigned: | April 30, 2019 |
| Date Last Reviewed: | April 30, 2019 |
| Reasons: | At least seven verified extant occurrences are known for this species in the province with additional populations likely to exist. The viability of all occurrences has not yet been assessed, but at least two have good to excellent viability and a total of ca. 900 individual plants have been reported. The estimated extent of occurrence is 721 square km and the estimated area of occupancy is 28 square km. Both short and long-term habitat and population trends are unknown but are likely relatively stable. There are no known imminent or long-term threats or site disturbance by present or former human activities, though climate change impacts should be monitored. |
| Range | |
| Range Extent: | C = 250-1,000 square km |
| Range Extent Comments: | The estimated extent of occurrence, calculated using GIS tools, is 721 square kilometres. |
| Area of Occupancy (km2): | EF = 26-500 |
| Area of Occupancy Comments: | The estimated area of occupancy is 28 square kilometres, using a 2km x 2km grid. |
| Occurrences & Population | |
| Number of Occurrences: | B = 6 - 20 |
| Comments: | Seven element occurrences are currently known. Potential habitat for this species, (i.e. dry talus slopes, volcanic scree and rocky ridges in the alpine zone) is abundant so additional populations are likely to occur. |
| Number of Occurrences with Good Viability / Ecological Integrity: | B = 1 - 3 |
| Comments: |
The viability of all occurrences has not yet been assessed, but at least two populations have good viability. |
| Number of Occurrences Appropriately Protected & Managed: | A = None |
| Comments: | Several small populations occur in Strathcona Provincial Park, where their protection will depend upon effective communication between management and field staff. |
| Population Size: | C = 250 - 1,000 individuals |
| Comments: | The number of plants has not been reported from all known sites, but at least 900 plants have been reported. |
| Threats (to population, occurrences, or area affected) | |
| Degree of Threat: | Slightly threatened |
| Comments: | There are no known imminent or long-term threats or site disturbance by present or former human activities (H. Roemer pers. comm. 2008). Climate change impacts are stochastic and difficult to incorporate into the threat analysis. Many of BC's specialized habitats including alpine ecosystems will become reduced in extent and more fragmented (Shafer et al., 2001). |
| Trend (in population, range, area occupied, and/or condition of occurrences) | |
| Short-Term Trend: | U = Unknown |
| Comments: | Populations in B.C. have not been monitored; therefore short term trends are unknown. |
| Long-Term Trend: | U = Unknown |
| Comments: | Insufficient historical information is available to determine long-term trends. |
| Other Factors | |
| Intrinsic Vulnerability: | U=Unknown |
| Comments: | It is not known whether this species is intrinsically vulnerable but plants appear to tolerate severe frost action and wind exposure at all locations. |
| Environmental Specificity: | C=Moderate. Generalist or community with some key requirements scarce. |
| Comments: | At Alexandra Peak, plants were most abundant where the bedrock was fractured and composed of differently textured fragments (e.g. volcanic breccia within the Karmutsen Volcanics). Erigeron salishii was rarely found in places with more than a scattered cover of other alpine plants and was frequently the sole vascular species on cliffs (H. Roemer pers. comm. 2008). Plants appear to tolerate limestone substrates. |
| Other Rank Considerations: | |
| Information Gaps | |
| Research Needs: | |
| Inventory Needs: | Additional inventory of similar habitats on Vancouver Island is needed to determine the actual range and abundance of this species in British Columbia. The documented occurrences should be revisited and monitored to determine population and habitat trends. |
| Stewardship | |
| Protection: | |
| Management: | |
| Version | |
| Author: | Donovan, M. and J.L. Penny |
| Date: | January 07, 2009 |
| References | |
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British Columbia Conservation Data Centre. Botany Program. 2000. Database containing records of rare plant collections and observations in the province of British Columbia.
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Douglas, G.W., D. Meidinger, and J. Penny. 2002. Rare Native Vascular Plants of British Columbia, 2nd ed. B.C. Conserv. Data Centre, Terrestrial Inf. Branch, Victoria. 358pp.
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Please visit the website Conservation Status Ranks for information on how the CDC determines conservation status ranks. For global conservation status reports and ranks, please visit the NatureServe website http://www.natureserve.org/.
Suggested Citation:
B.C. Conservation Data Centre. 2009. Conservation Status Report: Erigeron salishii. B.C. Minist. of Environment. Available: https://a100.gov.bc.ca/pub/eswp/ (accessed Jun 8, 2026).