Lichens may not be able to survive just a few centimeters away from where they live?

Lichens are highly specialized organisms formed from a symbiotic relationship between fungi and algae or cyanobacteria, allowing them to thrive in specific environmental conditions. They often require precise factors such as humidity, light, and substrate type to survive. Even slight changes in these conditions, such as variations in moisture levels or exposure to pollutants, can make it impossible for them to establish nearby. Consequently, their distribution can be very limited, leading to significant sensitivity to environmental changes.