p.57-74; in ....
Grigg R.W.; 1984; Resource Management of precious corals: A Review and Application to shallow water Reef Building Corals; Mar. Ecology 5 (1): 57-74;

p.230; in ....
Duxbury A.B., Duxbury A.C.; 1999; Fundamentals of Oceonography; 3rd ed.; McGraw-Hill; USA;

Quality versus quantity: although reefs are among the greatest gross primary producers, their fisheries yield and net system productivities are quite low. It was even observed that corals and fishes recycle (fed on) fish feces. This is completely inverse for the Peruvian upwelling where system biodiversity is very restricted, but fisheries yield far greater; p.414; in ....
Birkeland C.; 1997; Implications for Resource Management; in Birkeland C. (ed.) Life and Death of Coral Reefs; Chapman and Hall London - UK;

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