monaro dieback · number of perennial species (species/400ma2 plot) 13.5 5.5 1.49 22.28 88.75 8.44...
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Monaro Dieback
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Classifying dieback
(5) Healthy tree, (4) canopy thinning from edges, (3) epicormic growth, (4) extensive dead branches and epicormic growth, (1) tree death.
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The mid-1980’s story
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So, what now?
In 2013:
• 2000 km2,
• almost all Eucalyptus viminalis dead
or severely affected.
Recent dieback observed further
east – Numeralla.
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An obvious culprit – Gonipterus sp
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A simple and obvious solution…
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Grazing?
Dieback between Cooma and Berridale. To the left of the fence is a TSR, to the right a frequently grazed private property. There is no difference in the severity of dieback between these different land uses.
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Burning?
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Structure?
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Structural diversity?
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Weather?
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Future directions
Climate Analogue Explorer -
http://www.climatechangeina
ustralia.gov.au/en/climate-
projections/climate-
analogues/analogues-
explorer/
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https://theconversation.com/death-of-a-landscape-why-have-
thousands-of-trees-dropped-dead-in-new-south-wales-48657
http://www.abc.net.au/news/2016-02-11/monaro-dieback-brings-
science-and-aboriginal-knowledge-together/7034204
http://www.abc.net.au/news/2015-10-21/monaro-plains-eucalypt-
dieback-trees-lost-forever/6870542
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Monaro Dieback
Catherine Ross and Cris Brack
Australian National University