The southern maiden-hair fern (Adiantum capillus-veneris) is only known in Canada on private lands at Fairmont Hot Springs in the Columbia valley of southeastern British Columbia, more than 1000 km north of its main range. There is one extant population consisting of two extant subpopulations. This species is found on tufa (calcium carbonate) rock faces at the edges of hot mineral water flows, where the hot water creates a warm, humid microclimate. The southern maiden-hair fern subpopulations at Fairmont Hot Springs are very susceptible to subtle changes in hot springs water diversion and temperature changes. Thought to be extirpated from British Columbia in the 1960s, a southern maiden-hair fern population was found in 1974 at Fairmont Hot Springs, and the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) designated the species as “endangered” in 1984. In 2000, 2001 and 2002, field surveys confirmed the presence of four southern maiden-hair fern sites at Fairmont Hot Springs. Re-assessments by COSEWIC in 1998 and 2000 confirmed the “endangered” designation. This species is listed on the Species at Risk Act Schedule 1, and ranked as critically imperiled (S1) in British Columbia. The goal for southern maiden-hair fern is to maintain a viable and self-sustaining population distributed throughout the present subpopulations to reduce the risk of extirpation from British Columbia. Recovery actions could affect the following socio-economic sectors: land development and recreational users. The expected magnitude of these effects is unknown and will be further addressed in the recovery action plan. No critical habitat, as defined under the federal Species at Risk Act (Environment Canada 2004), is proposed for identification at this time.
Southern Maiden-hair Fern Recovery Team. 2007. Recovery Strategy for the southern maiden-hair fern (Adiantum capillus-veneris) in British Columbia. Ministry of Environment. Recovery Plan
Topic: Recovery Planning
Keywords: plant, fern, recovery team, recovery plan, Accord for the Protection of Species at Risk in Canada, bc, sara, cosewic, species at risk
Scientific Name: Adiantum capillus-veneris
English Name: Southern Maiden-hair
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