Surveys identify wetlands for waterbird

University of NSW researchers have identified Australia’s most important wetlands for waterbirds following extensive aerial surveys.

Teams of observers in light aircraft surveyed 4858 wetlands across Australia in late 2008.

A subsequent analysis was released by the National Water Commission on Thursday and estimated there are 4.6 million waterbirds from more than 100 species across these wetlands.

“This is the first time in Australia that we have attempted a national audit of the value of our wetlands for waterbirds,” said Professor Richard Kingsford, director of the Australian Wetlands and Rivers Centre at UNSW.

“We can now make some relative comparisons about the importance of different wetlands across the continent, which will help long-term decision-making about water resource management and conservation.”

The survey found that few wetlands supported large numbers of waterbirds (more than 10,000) and that the top 20 wetlands held about 40 per cent of all waterbirds.

Wetlands with extremely high concentrations of waterbirds (between 30,000 and 300,000) were found in northern Australia, Western Australia, central Queensland and western NSW.

“This provides management authorities with an excellent opportunity to measure long-term changes for waterbird communities, using the most important subset of wetlands,” Professor Kingsford said.

“Many of them are already identified as important under the Ramsar Convention, for which governments have reporting responsibilities.”

The team also analysed long-term changes in waterbird numbers, using annual data collected during aerial surveys of eastern Australia.

They found long-term declines, although the recent floods have provided evidence of some recovery.

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