Abstract
Coral reef fisheries support tens of millions of people, mostly in developing countries. Fishing on reefs can be classified into three stages: manageable, ecosystem-overfished, and Malthusian-overfished. Fishing with blasting devices and poisons is often associated with the third stage. Reductions in herbivory caused by overfishing may enhance the likelihood of organic pollution causing a coral–algal phase shift following major disturbances. However, cage studies indicate that reduction in herbivory can lead to the proliferation of algae even in the absence of eutrophication. A major concern with
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