Fresh doubts over WA Labor election commitments to boost Perth’s tree canopy
The WA government is facing fresh questions over its plans to boost Perth’s tree cover, with experts saying…
#NewsBeep #News #Headlines #AU #Australia #boostingwa'streecanopy #dieback #johncarey #Perth #perthnews #perthtreecanopy #reecewhitby #rogercook #shotholeborer #treecanopy #treedisease #treeplanting #treebate #trees #wa #wanews #watreecanopy
https://www.newsbeep.com/181597/
During the 1990s #ash #dieback, caused by Hymenoscyphus fraxineus, has spread from Asia to Europe where it can cause up to 85% mortality of ash trees during outbreak - review of the disease with focus on the history of the disease and management efforts in Britain and Ireland in the journal "Plant Pathology" by Dáire Carroll and Eric Boa - https://doi.org/10.1111/ppa.13859
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- "Consequently, this would result in a #dieback of substantial parts of the #rainforest" [1]
[1] Bochow, N., Boers, N., 2023. The South American monsoon approaches a critical transition in response to deforestation. Science Advances 9 (40), eadd9973+. https://doi.org/10.1126/sciadv.add9973
[2] Sierra, J.P., Junquas, C., Espinoza, J.C., Segura, H., et al. 2022. Deforestation impacts on Amazon-Andes hydroclimatic connectivity. Climate Dynamics 58, 2609–2636. https://doi.org/10.1007/s00382-021-06025-y
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The authors [1] conclude
- "After the #dieback of the #rainforest, the soil moisture approaches an #alternative #equilibrium consistent with the reduced #precipitation and #evapotranspiration of the #savanna vegetation"
- "At the #CriticalPoint, the atmospheric moisture content does not suffice anymore to maintain precipitation and, thus, latent heating rates that could switch the system back into the annual wet season, resulting in a permanent dry season state"
To highlight just one aspect of the many important results: Compared to the ‘no overshoot’ case, a temporary CO2 overshoot results in 10% higher global mean #SeaLevelRise in 2100, that keeps increasing over centuries thereafter.
Further findings relate to #ocean circulation, #permafrost, #fires, #landuse, #CDR, #coral #dieback, #economic #risks and #damages, lifetime #extreme event exposure (see below) & more.
The habitat of small endangered #mammals such as bandicoots is at risk from #dieback.
"The antechinus, the little pygmy possums, the potoroos and bandicoots, they actually live in our grass trees. When [the trees are] killed they've got no #habitat."
https://www.abc.net.au/news/2023-01-10/plant-disease-phytophthora-dieback-trial-endangered-species/101787108
#Phytophthora #driving #walking #pathogens
Going through preliminary #analysis of my field data from #Somaliland. The black dots are the locations of dead #juniper #trees at my #field site, which is located in an area that has been experiencing #dieback (red shade), and borders an area that has been rehabilitated through #soil and #water conservation (green shade).
