Lichen Survey Lab

Lichen Survey Lab

To complete this lab, pick out two areas that have at least 10 mature trees each. Try to pick one area closer to a source of pollution (manufacturing, traffic, coal burning, trash burning etc.). In each area try to find 5 different types of lichens. Using the “Info on Lichens” and “Lichen Identification Guide”, draw a sketch (make a note of the color) or photograph the lichens. Identify them using the terms: fruticose, foliose, crustose, and squamulose. Using the “Lichen Identification Guide” make a note by each one if they look like they are in the category of nitrogen sensitive, nitrogen-loving or intermediate (nitrogen is a common component of air pollution, so the nitrogen sensitive ones probably won’t grow well in polluted areas). If there are no lichens on the tree, look at sticks on the ground, rocks etc.

Area 1:

  Sketch or photo Category: fruticose, foliose, crustose, or squamulose nitrogen sensitive, nitrogen-loving or intermediate
Lichen 1

 

 

 

 

     
Lichen 2

 

 

 

 

     
Lichen 3

 

 

 

 

 

     
Lichen 4

 

 

 

 

 

 

     
Lichen 5

 

 

 

 

 

 

     
 

 

Area 2

     
  Sketch or photo Category: fruticose, foliose, crustose, or squamulose nitrogen sensitive, nitrogen-loving or intermediate
Lichen 1

 

 

 

 

 

 

     
Lichen 2

 

 

 

 

 

 

     
Lichen 3

 

 

 

 

 

 

     
Lichen 4

 

 

 

 

 

 

     
Lichen 5

 

 

 

 

 

 

     

 

  1. Compare your two areas, did you find that one area had more species of lichens than the other?

 

  1. Did one area have more nitrogen sensitive species?

 

 

  1. What does that mean about the levels of air pollution in your two areas?

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