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Both interior cedar-hemlock (ICH) and sub-boreal spruce (SBS) stands in the wet-belt zone of central-interior BC were historically characterized by long ecological continuity (time between major disturbances). This favoured the development of what have now been recognized as globally significant epiphytic lichen assemblages. At the same time, there has been growing recognition of conservation biology challenges faced by these lichen communities. In his 2002 AAC determination for the Prince George Timber Supply Area (PGTSA), the Chief Forester called for more research, in light of a number of information gaps on rare and sensitive species such as cyanolichens in wetbelt forests. The need for landscape level planning tools was further highlighted by recommendations from the (former) BC Ministry of Sustainable Resource Management that old-growth management targets be met through aspatial designations. Although earlier scientific studies have noted the general importance of topographic position and stand age, there were no specific criteria that could be used to predict lichen biodiversity when using current coarse filter planning tools such as Predictive Ecosystem Mapping (PEM) and/or the Vegetation Resource Inventory (VRI). These information gaps are now being addressed through a program of research that poses two major questions: 1) Can we identify coarse filter attributes that are associated with sensitive lichen species within regional landscapes?; and 2) Will sensitive species be retained (and grow) under silvicultural systems that maintain selected attributes of old-growth forests?
Darwyn Coxson.
Coxson, Darwyn S.. 2006. Coarse filter approaches for the conservation biology of canopy lichens in wet cedar-hemlock and sub-boreal spruce forests of central-interior BC. Forest Investment Account (FIA) - Forest Science Program. Forest Investment Account Report. FIA2006MR119
Topic: FLNRORD Research Program
Keywords: Forest, Investment, Account, (FIA), Lichens, British, Columbia
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