A new Griffith-led study shows that, contrary to popular belief, organic suspended particulate matter on the Great Barrier Reef doesn't come from land derived river run-off.
," said Professor Chengrong Chen, the head of the Soil Environmental Biogeochemistry Research Group and the 4R Waste Hub at the Australian Rivers Institute.
Using advanced fingerprinting techniques, this study revealed rapid change in the isotopic, structural and genetic make-up of the suspended particulate matter from catchment to reef and particularly within the river-estuarine mixing zones. "The genetic and biogeochemical signatures of the suspended particulate matter in the Great Barrier Reef lagoon were more consistent with that formed locally by marine phytoplankton."
Contrary to what was long believed, very little material suspended in river water columns, if any, is transported offshore to reef environment. These results are a revelation when it comes to the focus of water management and regulations for the Great Barrier Reef.
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