The poor pocket moss is a tiny moss that forms loosely gregarious and usually tiny patches over compact soil. It is endemic to western North America, restricted to western portions of California, Oregon, Washington, and southwestern British Columbia. In Canada, the poor pocket moss is restricted to southwestern British Columbia, where it is known from only Lynn Canyon Park in the District of North Vancouver. Population data are presented from Lynn Canyon.
The Canadian populations probably represent less than 1% of its global distribution and abundance. Detailed data on population trends for this species in Canada are lacking, although the information that is available indicates that the size and numbers of patches of this species may vary on a short-term and annual basis, possibly depending on the amount of open substrate and the degree of local erosion. The main microhabitat for this species is on a shaded and seasonally wet silt outcrop.
Poor Pocket Moss Recovery Team. 2007. Recovery Strategy for Poor Pocket Moss (Fissidens pauperculus M. Howe) in B.C.. Ministry of Environment. Recovery Plan
Topic: Recovery Planning
Keywords: species recovery, compact soil, species at risk, SARA, bc, cosewic, recovery planning
Scientific Name: Fissidens pauperculus
English Name: Poor Pocket Moss
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