Trees Please Hamilton

Green Solutions to Air Pollution

Lichen and Air Quality

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Have you seen this golden gem? Candelaria concolor is a common lichen found on Maple and Ash trees in Hamilton. Right now is a great time to see it stand out! This lichen is an indicator of air quality due to its sensitivity to sulpher and nitrogen dioxide. The more abundant the cleaner the air!

Our program will look to study its abundance on Urban trees modelled under the approach performed by Dr. Sorger of McMaster University. We need your help! Volunteer for street tree inventories and help discover this treasure!


Andrew Avsec:


Author: treespleasehamilton

A project of the Hamilton Naturalists' Club and Environment Hamilton. Funding by Ontario Trillium Foundation.

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