INFLUENTIAL, but seriously flawed research suggesting agricultural pesticides killed mature stands of mangroves at Mackay in Queensland was based on experiments with mangrove seedlings that were dosed with concentrations of Diuron orders of magnitude higher than anything found in waterways.
Seedling were used because it was claimed that it was impossible to grow mature mangrove plants under controlled conditions, and because of the urgency of proving a causal connection between agriculture and damage to the Great Barrier Reef high concentrations were applied.
In April 2011, with funding from the B. Macfie Family Foundation, and a permit from the Department of Fisheries, John Abbot and I oversaw the excavation (with a 10 tonne excavator) of 10 mature mangrove plants from the Koorana Crocodile Park on the Capricorn Coast. Eight of the 10 plants survived. In fact the eight have thrived under our cultivation system that includes an irrigation system that simulates diurnal tidal inundation of the large containers with the mangroves.
Jennifer Marohasy BSc PhD has worked in industry and government. She is currently researching a novel technique for long-range weather forecasting funded by the B. Macfie Family Foundation.