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Fat ducks equal fat cows

By Jennifer Marohasy - posted Tuesday, 18 April 2006


Graziers like water, and the cheaper it is, the better. Environmentalists thrive on crises - no environmental problems, no crusades. In the Macquarie Marshes both groups have formed a symbiotic relationship with graziers diverting water to their own uses, creating a perceived “crisis” in native bird populations, leading to them receiving even more water, but with zero effect on the “crisis”.

All this at the expense of the taxpayer, who should be getting paid for the water, with the blame being sheeted home to the innocent bystander, the irrigators, who are not only the most profitable industry in the area, but pay full freight for the minimal amount of water they get. Confused? Here’s how it works.

Last September, New South Wales Environment Minister Bob Debus announced that 30,000 megalitres of water, worth about $3 million dollars on the open market, would be released into the Macquarie Marshes as environmental flow. Because of subsequent rainfall this was increased to 120,000 megalitres worth about $12 million. A best kept secret is that most of this water was used to fatten cattle on private land.

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The Macquarie Marshes cover an area of 220,000 hectares in central western NSW and are famous for their water birds. But few realise that 88 per cent of the marshes are privately owned and through the construction of levies, diversions and channels, marsh graziers have ensured environmental water goes to private land first. There is a northern and southern nature reserve, where grazing has been excluded: these areas make up the remaining 12 per cent and are managed by the NSW Government.

With the construction of the Burrendong Dam in 1967 and subsequent development of irrigation and a local cotton industry, there has been a widespread perception that the marshes have suffered and the fault is all the irrigators. In reality the marshes still receive 85 per cent of the water they received before the dam was built - this was 32 per cent of the total inflows into the Macquarie system and is now 27 per cent.

The only real monitoring of the biodiversity of the marshes has been the breeding of water birds. Bird-breeding sites were first mapped in the late 1970s. At this time the major breeding colonies were along the Macquarie River and most within the nature reserve. But over the past 30 years there has been a migration east to the Terrigal-Gum Cowal wetland, which is all on private land.

The last big waterbird breeding event in the marshes was in 2000, and ten of the 12 main breeding colonies were located on private land with only two in the nature reserve.

When the numbers of water birds breeding during major flood events over this period are compared, it is evident that, contrary to popular perception, there has not been an overall decline in the total number of birds, but there has been a decline in the number of birds breeding within the nature reserve. The movement of birds out of the nature reserve reflects the channelling of water out of the nature reserve to private land.

In 2002, 18 per cent (12,000 megalitres) of an environmental flow allocation for the marshes was directed to the Terrigal system that supplies private landholders rather than the core marsh area. In 2003, 27 per cent (15,000 megalitres) of an environmental flow allocation for the marshes was directed to the Terrigal system.

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Last year, the 30,000 megalitres of water, so proudly announced by the minister as being for the marshes was blocked from reaching the southern marsh nature reserve for a period of days. It is unclear how much of the total 120,000 megalitres of water, worth $12 million, eventually got through and then how much water would have made it further down stream to the northern marsh nature reserve.

Does it matter that environmental flow is being directed away from the nature reserve to privately owned land if 88 per cent of the Macquarie Marshes are privately owned and if healthy colonies of birds can coexist with cattle? The local graziers have a saying, “fat ducks equal fat cows”.

The nature reserves were grazed under lease rights until 1990. In 1943 restrictions were placed on grazing and burning in these areas because the reed beds were considered under threat. It became illegal to burn reed beds except with the written consent of the district surveyor. According to the regulations, stock were to be excluded from all reed re-growth until it was 3ft high, and rookeries for bird nesting and breeding were to be completely fenced.

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About the Author

Jennifer Marohasy is a senior fellow with the Institute for Public Affairs.

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