Indicator species & biotic index

IB Biology: Indicator species & biotic index

Indicator species are species who can be easily identified and sampled and which are sensitive to some type of air pollution. There are many examples of such species including Lichens growing on trees and the larvae of Mayfly, Stonefly and Cadissfly. The presence and absence of groups of indicator species are sometimes combined into a system known as a biotic index. In this activity students will experience the use of...


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