jarrah forest

A wildfire burning over five days would do more damage to vegetation and biodiversity in the northern jarrah forest than five decades of climate change has done ..."This forest has survived for some four to five million years. I am confident it can survive for a few decades longer. We humans must recognise that the ecosystem is never static, and be able to live with and accept some level of change": Frank Batini, professional forester and environmental consultant.

Deep in the forests of Western Australia, jarrah has left a remarkable legacy. In the late 1800s, this mighty hardwood—then called Swan River mahogany—revolutionised city life. The noise on London's streets changed from the familiar harsh clang of hooves on cobblestones to the softer clippity-clop of horses trotting over wooden blocks. Those blocks were made from jarrah, and soon that timber paved an empire.

While politicians and activists agonise over the merits of the wars in Gaza and Ukraine, a far more insidious war rages on — not between nations, but between species. It’s the war we barely talk about, yet one we’re losing badly: the war against invasive pests. From farmland to forest, the frontlines are everywhere, and the casualties aren’t measured in headlines but in trees, crops, ecosystems — and billions of taxpayer dollars.

Frank Batini. In summer 2011, following a very dry winter there was limited but noticeable tree crown scorch and some deaths of jarrah (Eucalyptus marginata) on sites with shallow soil. This event was repeated in summer 2024. On both of these occasions the forest growing on deeper soils was healthy. Academic and media comment immediately linked these deaths to human induced climate change ... ARR.News asked some further questions of Frank.

Dr Lachlan McCaw AFSM. Federal environmental approval recently granted for expansion of the South 32 Worsley bauxite mine has given the green light to clearing of a further 3855 hectares of native forest around Boddington south-east of Perth ... the community should question how much bauxite mining is enough, and whether closure of the native forest timber industry is simply a convenient smokescreen for increased mining in the jarrah forest.

Conservation group Denmark Nannas for Native Forests found a bleak aftermath of a 1123ha prescribed burn in November of Sheepwash North in Mt Lindesay National Park. They were shocked to see big areas of tree canopy defoliated and most of the remaining canopy scorched.

Gavin Butcher. Forest sustainability has taken on different meanings in Western Australia – changing depending on the audience. In one corner the Minister for Forestry, Jackie Jarvis, has repeatedly claimed the closure of the native forest industry was necessary because it was unsustainable. In the other corner is Stuart West, the General Manager of the Minister’s agency, the Forest Products Commission, overseeing harvesting operations in the jarrah and karri forests which have been independently certified as being sustainable.

Jack Bradshaw. Having killed off the native forest timber industry by edict, the WA government is now taking the next step to cement its hypocrisy in legislation. Reece Whitby, the Minister for the Environment has recently introduced an amendment to the Conservation and Land Management Act 1984 (WA) to “lock in this Labor government’s historic decision to stop the unsustainable practice of commercial native logging”.

Frank Batini. I have observed patterns of foliage scorch, some tree deaths and then recovery in the northern jarrah forest for 22 years. These can be readily explained in terms of soil depth, water-holding capacity, winter rainfall and summer drought ... My hypothesis is that this forest has repeatedly shown resilience to drought ... This is the “good news”, as opposed to the alarmism of other commentators.

A scientific survey is being carried out in the Perth Hills, near Mundaring. Scientists are seeking to better understand the health of the forest through the simple art of listening. Using the emerging science of eco-acoustics, researchers are monitoring forest soundscapes to better understand and benchmark ecosystem health.