The introduction of a large predatory fish species into a lake will lead to declines in populations of smaller fish,which in turn cause an increase in plankton.This series of events is one example of

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The introduction of a large predatory fish causing a decline in smaller fish populations and an increase in plankton is an example of a trophic cascade. The trophic cascade occurs when changes in the abundance of one species at one level of the food chain impact the abundance of species at other levels of the food chain. In this example, the addition of a new predator at the top of the food chain cascades down to affect the populations of smaller fish and ultimately the abundance of plankton.

The Introduction of a Large Predatory Fish Species into a Lake