wildlife value (of trees)

The diversity and abundance of the animals and epiphytes associated with different tree species. Trees vary in their value for mycorrhizal fungi, wood decay fungi, wood decay invertebrates, leaf litter organisms, foliage invertebrates (number of species and total biomass), pollen and nectar feeders, fruit and seed eaters, epiphytes etc. Trees generally have high value for some categories, less value for others.

This definition is abridged from A – Z of tree terms: A companion to British arboriculture.
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