Response Statements

Response Statement - Pale-bellied Frost Lichen

This lichen is an eastern North American endemic that, in Canada, is restricted to 2 known locations in southern Ontario. The lichen grows as an epiphyte on hardwoods and requires bark with high pH and high moisture holding capacity.  Only 45 individuals are known, growing on 16 trees. The lichen appears to have suffered a dramatic population decline throughout its range since the early 1900’s; in Canada 4 historical sites have been lost. The major threat to the lichen is air pollution and timber harvest.


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