Can't equate climate with weather
Noel Watson is right. Weather has been a topic of conversation for years (BDN Letters, 15/10). But he wrongly equates climate change with changeable weather.
Climate change is about unprecedented levels of greenhouse gases in the atmosphere and the unrelenting steady rise in average global temperature. Anyone who bothers to look at the NASA graph at climate.nasa.gov/evidence/ showing how CO2 levels have not been this high for 800,000 years and are rising steeply will be shocked.
Noel is to be thanked for his service to the local brigade, but the bushfire royal commission's final report said controlled burning to reduce fuel loads "may have no appreciable effect under extreme conditions."
Former Fire & Rescue NSW Commissioner Greg Mullins has said "hotter temperatures and drier conditions, driven by climate change, are the root cause of these fires. It is a dangerous distraction to suggest otherwise."
Ray Peck, Hawthorn, Vic
Myth of forever-full Menindee
Below where the Darling joins the Murray, the river is perennial only because it is regulated by major storages: 40 in NSW, 3 in the ACT, 27 in Victoria, 7 in Queensland and 7 (mainly locks and weirs) in SA (Forgotten River, BDN online).
Above Wentworth at Menindee, the Darling River ceased to flow 48 times between 1885 and 1960, including for 364 days in 1902-03, which was driest year on record. The inter-War drought that ended in 1947 was relentless and devastating, and counting no-flows forward from 1950 is a data-fiddle that distorts our history.
The Menindee Lakes were originally a series of shallow depressions that filled during floods and drained back as the river receded, and prior to their enlargement in the 1960s they regularly ran dry. It's a myth to paint them forever-full and brimming with fish. It is also not possible to store water in lakes with a surface area of 48,000 hectares, an average depth of 7 metres, where evaporation accounts for about 2000 mm/year, and not expect them to occasionally run dry.
The Menindee Lakes provide water to Broken Hill, water for irrigation along the lower Darling and augment flows in the River Murray, which assists supplying water to South Australia. Facts matter and it seems that those who have forgotten about the 'forgotten river' and the Menindee Lakes in particular, either don't want to know or can't be bothered to find out.
Bill Johnston, Port Macquarie (ex-Bemboka)
Why doesn't SEFR take National Parks to court for mismanagement of the environment, instead of trying to attack a company that sustainably manages their forest along with the Forestry commission.
ANWE has invested a lot into our region's future, just to be attacked by people that have way too much spare time on their hands. Balance is good and sustainable.
SEFR should donate their time to manage National Parks, because its clear they can't do it themselves.
David Wilson, Pambula
No advantage to development
Put simply l object to the development/building of cabins and/or huts in Ben Boyd National Park. This would seem to be a purely commercial venture with no obvious advantage for the park.
Our parks need to be protected to conserve the environment, flora and fauna to enable/assist life to continue on this earth for now and future generations.
Australians lead the world with species extinction, land clearance is out of control. Rubbish and weed infestation are problems that will ensue. Leave our natural wonderlands as they are. I say no to development in our national parks - providing accommodation outside of the parks is the answer