Engineering Question #1872

Jennifer Easterly, a 24 year old female from Sydney asks on January 25, 2004,

Does the diameter of a tree have anything to do with the percentage of lichen coverage on the tree?

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The answer

Murray Strome answered on January 28, 2004

I believe that the diameter would be an insignificant factor regarding the percentage of lichen coverage on the tree. The major factors would be the location, amount of sunlight, temperature, moisture, air polution, etc. Stand height does seem to have some effect, which could be related to diameter, but this is probably incidental. Here is a research project on Vancouver Island that may help.

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