Silver hair moss (Fabronia pusilla) COSEWIC assessment and status report: chapter 8

Limiting Factors and Threats

Many species of moss that grow with Fabronia pusilla are larger and may out-compete it, but no information is available to support this claim.

There are potential, but probably minor, natural environmental threats to the possibly extant population of Fabronia pusilla. These include forest fires in areas adjacent to the outcrop and rock face degradation. A number of areas along Sumas Mountain are presently being proposed for development, but the sandstone cliffs are not within the proposed development boundaries. Hiking is common along much of the area beneath the cliffs but no damage to bryophyte populations on the outcrops was observed.

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