Explanation
This compares the fidality, distribution, and abundance of a specific species to all the other zones and samples within a zone, where zones are specific to the factor being tested. For instance, Zone 1 is a heavy pollution zone, Zone 2 medium pollution, and Zone 3 light pollution, if one is to set up zones to obtain an indicator value of lichen abundance and fidelity in relation to pollution. 100 is multiplied to the end result to get a percentage, while a percentage of 25% or higher is usually considered indicative of the specific zone. Student t-tests and other statistical tests can further establish conclusive results.
Read more about this topic: Indicator Value
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