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AAP
AAP
Environment
Tracey Ferrier

REVEALED: Major new threat to great barrier reef identified | Rare Historical Photos

Scientists have identified a new threat to the Great Barrier Reef. (Alison Godfrey/AAP PHOTOS)

Scientists have identified a major new threat to the Great Barrier Reef - invisible groundwater flows delivering nutrients at harmful levels.

It's long been known that nutrient-rich river water is a major cause of poor water quality on the reef.

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