Destruction of kelp forests by tropical fish shows impact of ocean temperature rises

Deforestation near Coffs Harbour coincided with 0.6C temperature rise, which had ‘catastrophic’ effect of attracting fish

Herbivorous tropical fish have destroyed kelp forests in northern New South Wales, showing that even small increases in ocean temperature can lead to kelp deforestation, an Australian study has found.

The University of NSW study, published in the Proceedings of the National Academy of Sciences on Tuesday, found that the disappearance of kelp from waters near Coffs Harbour coincided with a threefold increase in the number of tropical fish in the region.

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