Answer
In Fig. 57.14, the fish ate herbivores, allowing algae more growth. In Fig. 57.15, the fish ate predators of herbivores, allowing the herbivores to grow and eat more algae.
Work Step by Step
This is an example of how the complexity of ecosystem biology can lead to seemingly contradictory results. Careful examination always allows us to see the logic behind what happens and to resolve apparent contradictions.
