Introduction
| During the route, in the black pine forest, we find different types of lichens. Lichens are associations between two organisms, a fungus and a seaweed, living in symbiosis. |
| On the rocks we find crustacean lichens, which make like a crust which is very attached to the rock. |
| In the trees, either on the trunk or on the branches, we find two more types: the fruity lichens, hanging from the branches, and the foliacis, which make a structure similar to small leaves on the trunks. |
| Lichens, especially arbores, are great bioindicators, since they are very sensitive to atmospheric pollution. Its presence indicates that the area's environment is excellent. |
Images not available