heavy harvesting of all herbivores is incompatible with vigorous coral growth; see section Overfishing of this chapter, further below;
p.255-257; in ....
Pennings S.C.; 1997; Indirect Interactions on Coral Reefs; in Birkeland C. (ed.); Life and Death of Coral Reefs; Chapman and Hall London - UK;

online ....
De Bruin G.H., Russell B.C., Bogusch A.; 1994; Species Identification Field Guide for Fishery Purposes; Food and Agriculture Organization of the United Nations; Rome - ITA;
FAO

online ...
Vecchi P.; 1996; Fish Watching in the Maldives - A Snorkellers Guide; ITA;
Maldive

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