DR GERALD GOEDEN'S MARINE ECOLOGY

Series of trawls in inter-reef areas produced patterns of weak community zonation. Patterns were most closely allied with depth and expressed more clearly by fishes. These could be defined as a relatively rich offshore assemblage and a depauperate inshore assemblage.

Analysis indicates that fishes are probably the best indicator of zonation in the inter-reef regions.

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For many years the management of fisheries resources on the Great Barrier Reef was based on the notions of minimum sizes at capture. With this research, bag limits were also introduced to try to stem the depletion of particular species through overfishing.

What was never anticipated was that Coral Trout would be so heavily fished that entire communities would be altered in terms of species composition. It has taken from 1986 (the date of publication) until now for coral reef managers to understand the relationship between keystone species abundance and coral reef community 'health'. Sadly, understanding has come too late.

Gerald Goeden