Houghton's goldenrod (Solidago houghtonii) COSEWIC assessment and status report: chapter 8
Limiting Factors and Threats
There do not appear to be any imminent threats to the Houghton’s goldenrod populations observed, although there are some potential threats. Houghton’s goldenrod is primarily found in alvars and interdunal wetlands. Alvars, as a habitat are often threatened by heavy recreational use, ATV traffic, and grazing. Alvars also tend to occur over high-grade limestone, and quarrying presents a potential threat. They are also vulnerable to natural disturbances such as droughts, floods, encroachment of trees, and invasive species (Catling and Brownell, 1995; Belcher and Keddy, 1992). Active quarries were observed on the La Cloche Peninsula and on La Cloche Island about one to three km from the patches of Houghton’s goldenrod. Vehicle tracks were observed in the MacGregor Bay Alvar (site 005) but did not appear to be recent. Tracks were also observed on La Cloche Island, particularly near the road, although none were actually in the Houghton’s goldenrod patches.
Heavy recreational use and residential development can also threaten dune ecosystems.
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