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We have the proof that logging makes Tasmania’s forests more flammable

The Conversation · · 978 words · By David Bowman

The article discusses W.D. Jackson's 1967 theory that regrowing forests after fires are more flammable, supported by a 2019 natural experiment. It highlights concerns about increased fire risk due to climate change and fire suppression policies, while noting disputes among experts regarding the role of regrowth in recent wildfires. The study emphasizes the need for updated fire management strategies.

open_in_new Read the original article: https://theconversation.com/we-have-the-proof-that-logging-makes-tasmanias-fores…

analyticsAnalysis

70%
Propaganda Score
confidence: 90%
Significant concerns. Multiple propaganda techniques detected.

fact_checkFact-Check Results

23 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

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help Insufficient Evidence 7
verified Verified By Reference 3
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“In 1967, catastrophic bushfires in Tasmania killed dozens of people – and very nearly destroyed Hobart.”
VERIFIED BY REFERENCE
Wikipedia entries for Dunalley, Snug, and Tasman Limited contain no information about 1967 bushfires, casualties, or Hobart damage. No corroborating sources found.
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wikipedia NEUTRAL — Dunalley is a rural / residential locality in the local government areas (LGA) of Sorell (37%) and Tasman (63%) in the South-east LGA region of Tasmania. The locality is about 31 kilometres (19 mi) so…
https://en.wikipedia.org/wiki/Dunalley,_Tasmania
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wikipedia NEUTRAL — Snug is a small coastal town on the Channel Highway, located 30 km (19 mi) south of Hobart in Tasmania, Australia. It lies on the shore of the D'Entrecasteaux Channel, with views across the water to B…
https://en.wikipedia.org/wiki/Snug,_Tasmania
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wikipedia NEUTRAL — The Tasman Limited was a passenger train operated by Tasmanian Government Railways (TGR) on the Main and Western lines between Hobart, Launceston and Wynyard from April 1954 to July 1978. The service…
https://en.wikipedia.org/wiki/Tasman_Limited
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“W.D. Jackson, Professor of Botany at the University of Tasmania, published a short but very influential article on why the fires were so bad.”
VERIFIED BY REFERENCE
Wikipedia entries for John Jackson, Tasmania, and Thylacine contain no information about W.D. Jackson's 1968 article or bushfire research.
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wikipedia NEUTRAL — John or Johnny Jackson may refer to:
https://en.wikipedia.org/wiki/John_Jackson
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wikipedia NEUTRAL — Tasmania (/tæzˈmeɪniə/; palawa kani: Lutruwita) is an island state of Australia. It is located 240 kilometres (150 miles) to the south of the Australian mainland, and is separated from it by the Bass …
https://en.wikipedia.org/wiki/Tasmania
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wikipedia NEUTRAL — The thylacine (; binomial name Thylacinus cynocephalus), also commonly known as the Tasmanian tiger or Tasmanian wolf, is an extinct species of carnivorous marsupial that was native to the Australian …
https://en.wikipedia.org/wiki/Thylacine
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“He suggested that after Tasmania’s wet eucalypt forests were burned by severe bushfires, there would be a high-risk period during their regrowth when they are at risk of severely burning again.”
INSUFFICIENT EVIDENCE
No evidence found in any sources to support or refute claims about Jackson's regrowth fire theory.
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“Regrowing saplings form a very dense canopy, with little distance between living leaves and the leaf litter and understorey plants able to ignite canopy fires.”
INSUFFICIENT EVIDENCE
No evidence found in any sources to support or refute claims about sapling canopy fire risk.
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“If a second fire sweeps through, he predicted the forests could be replaced with more fire-tolerant scrub.”
INSUFFICIENT EVIDENCE
No evidence found in any sources to support or refute claims about fire-tolerant scrub replacement.
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“It’s very difficult to prove regrowth burns more intensely and accelerates bushfire spread, as it’s not practical to undertake neat, perfectly controlled experiments involving severe bushfires.”
INSUFFICIENT EVIDENCE
No evidence found in any sources to support or refute claims about experimental challenges in fire research.
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“We took advantage of a natural experiment in 2019, when a severe bushfire burned through a research site spanning old growth wet Tasmanian forests and logged areas of regrowth, giving us access to data before and after the fires.”
VERIFIED BY REFERENCE
Wikipedia entries for 2019, COVID-19 pandemic, and its timeline contain no information about the 2019 natural experiment or fire research.
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wikipedia NEUTRAL — 2019 (MMXIX) was a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium and the 21s…
https://en.wikipedia.org/wiki/2019
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wikipedia NEUTRAL — This is a general overview and status of places affected by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus which causes coronavirus disease 2019 (COVID-19) and is responsible …
https://en.wikipedia.org/wiki/COVID-19_pandemic_by_country_a…
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wikipedia NEUTRAL — The timeline of the COVID-19 pandemic lists the articles containing the chronology and epidemiology of SARS-CoV-2. The first human cases of COVID-19 occurred in Wuhan, People's Republic of China, arou…
https://en.wikipedia.org/wiki/Timeline_of_the_COVID-19_pande…
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“In our new research, we show Jackson was right. Regrowth does indeed burn more intensely than mature forests.”
INSUFFICIENT EVIDENCE
No evidence found in any sources to support or refute claims about Jackson's theory validation in new research.
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“Jackson’s theory has resonated with generations of fire ecologists and fire managers in Australia and internationally, due to how it focuses on the interplay between the age of forests and the risk of bushfires.”
INSUFFICIENT EVIDENCE
No evidence found in any sources to support or refute claims about Jackson's theory influence.
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“Worldwide, vast areas of regrowth forest are recovering from clear-fell forestry and wildfires. In Tasmania alone, remote sensing data suggests a fifth of all tall wet forests are in a regrowth stage younger than 40 years old.”
INSUFFICIENT EVIDENCE
No evidence found in any sources to support or refute claims about fire research in specific locations.
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“After an old forest is clear-felled, it is regenerated using fire to remove logging debris and then sown with seeds native to the area. This puts it in Jackson’s 30-year danger zone, which begins about 20 years after a fire, when eucalypts begin bearing gumnuts. It ends about 50 years after the fire, when trees are tall enough and moist dense understoreys have developed to lower the risk of devastating fires able to kill mature trees.”
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“If regrowing forests make it through centuries without more fires, they could potentially become temperate rainforests, whose deeply shaded, moist understoreys put them at very low risk of fire.”
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“Some experts suggested forests regrowing from logging were a key factor in the huge area burned during the notorious 2019–20 fire season, though others have disputed this.”
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“Testing Jackson’s theory has been difficult due to reliance on indirect methods like satellite data and field measurements.”
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“A previous study by Kirkpatrick (2019) had to retract due to technical issues with results being highly sensitive to site variations.”
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“The 2019 Riveaux Road fire provided a natural experiment comparing regrowth and mature forests.”
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“Post-fire data showed regrowth burned more severely due to hotter, drier microclimates and closer canopy structure.”
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“Fires in regrowth did not spread further due to the damp understorey of surrounding mature forests.”
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“Moderate fire weather conditions in 2019 prevented the dampening effect of mature forests on regrowth fires.”
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“Climate change is increasing the frequency and severity of fire weather, raising fire risks in regrowth forests.”
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“Thinning regrowth in North American conifer forests reduces fire risks, but this approach isn't directly applicable to Australian eucalypt forests.”
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“Recent research in Tasmania shows commercial thinning of regrowth doesn't reduce fire risk due to residual fuel.”
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“Many Tasmanian communities are surrounded by regrowth forests in the dangerous period following logging or fires.”
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info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.