Showing posts with label Murray river. Show all posts
Showing posts with label Murray river. Show all posts

04 December, 2012

River red gums to face 'ecological thinning'


Ben Cubby and Tom Aru
The Age, December 4, 2012

WHEN is logging not logging? When it is ''ecological thinning'' in national parks, according to the governments of New South Wales and Victoria.


The two states are conducting trials in national parks on both sides of the Murray River. Under the project, trees will be cut down at 22 sites over about 400 hectares of the Barmah National Park in Victoria and the Murray Valley National Park in NSW. Most of the timber will be burnt as firewood.

The study will examine whether felling smaller trees gives more established trees a better chance of surviving in the parched environment.

But environment groups say the practice is an excuse to log in national parks, and will lead to them being opened up to more commercial activity.

The NSW government has advertised for commercial logging contractors and has held a meeting with contractors. The Victorian government will advertise soon.

A spokesman for Victorian Environment Minister Ryan Smith said the trial would determine if ''ecological thinning'' could be used to improve river red gum forest health by reducing competition between trees for nutrients and water. He said no trees over 40 centimetres diameter at chest height would be removed.
''The felled trees removed from the plots will be assessed for suitable byproducts, including domestic firewood, community projects and park furniture. Other felled trees will be left on the forest floor for potential wildlife habitat but managed in a way to minimise fire risks,'' he said.

NSW Environment Minister Robyn Parker said: ''It is estimated that about 3000 tonnes of residue will be created, which can be made available to local Riverina residents as part of the existing river red gum domestic firewood program.''

The state governments have not sought approval from Canberra, saying the project does not have sufficient impact to trigger national environment laws. But that is contested by conservationists, who say the project could harm internationally protected wetlands and endangered species. Federal Environment Minister Tony Burke said: ''My department is seeking clarity to determine what is being proposed.''

Nick Roberts, from the Victorian National Parks Association, said the project was ''logging by stealth'' and called on the federal government to step in.

''First the Baillieu government invented 'scientific grazing', now it's trying its hand at 'scientific logging'. The sanctity of Victoria's national parks is under serious threat,'' he said.

Victorian Association of Forest Industries spokesman Shaun Ratcliff welcomed the project. He said while some groups wanted forests protected as museums, they needed ''active management regimes'' to reflect the impacts of fires, drought and introduced species. The NSW government said the Natural Resources Commission recommended the project when the parks were established, and it had been accepted by the previous Labor government.

The Victorian Environmental Assessment Council gave qualified support in 2008 for ecological thinning in river red gum parks, and it also gained the backing of the former state Labor government.

11 May, 2008

THE AGE: Parched forests get an overdue drink

Melissa Fyfe
The Age, May 11, 2008

Thousands of red gums on the brink of death have been saved — temporarily at least — after 17 billion litres of water were released from dams to boost Victoria's ailing Murray wetlands.

The water sparked an immediate response from the environment. Hundreds of frogs spawned, waterbirds arrived and tortoises laid eggs. Many of the areas targeted had not seen water for two years. Numbers of waterbirds have dropped by two-thirds during the 11-year drought.

About 10,000 red gums — some 500 years old — would have been dead within a year had the environmental flow not occurred, said Dr Jane Doolan, from the Department of Sustainability and Environment.

Water has flowed through the wetlands and creeks for two weeks.

Recent studies have found that 70% of red gums in northern Victoria are dead or dying. This month's watering will cover only 900 hectares, or 1.4% of the state's river red gums.

The environmental allocation consists of 6 billion litres from the Murray-Darling Basin Commission's Living Murray program and 11 billion litres from Victoria's pool of environmental water.

It is flooding the Gunbower Wetlands north-west of Echuca; Little Lake Boort west of Echuca; the Lindsay-Walpolla site in the Mallee; and the Reedy, Kinnaird, Black and Moodies swamps near Shepparton.

State Environment and Climate Change Minister Gavin Jennings said the water had prevented ancient forests from turning into red gum graveyards. "Some of the river red gums were alive when Columbus discovered the Americas. They are part of all Victorians' heritage," he said.

The Murray remains bleak, however. Dried-up wetlands and creeks in the lower parts of the river in South Australia have started to turn acidic and leach heavy metals, including high amounts of aluminium and arsenic, zinc and lead.

The $12.9 billion water package to save the Murray has been finalised, but water specialist Mike Young, from the Wentworth Group of Concerned Scientists, has warned that time is running out and the Federal Government must act quickly to use $3 billion to buy back the 1500 billion litres the river system needs to be healthy.

The Bureau of Meteorology winter forecast for the basin, released last week, suggested another dry El Nino phase could be on the way and there was little hope of good rainfall. The basin commission's chief executive, Dr Wendy Craik, described the situation as not terribly optimistic, but dam levels were slightly higher now than at this time last year.

It is hoped the northern Victorian environmental water will help threatened species such as the regent parrot, the inland carpet python, the barking owl, the painted snipe, the white-bellied sea eagle and the growling grass frog.

It is hoped the royal spoonbill, the great egret and the glossy ibis will benefit from the watering in the Gunbower Wetlands.

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