Eldorado Posted December 4, 2021 #1 Share Posted December 4, 2021 The drought and heatwaves that seared eastern Australia in the lead-up to the 2019-20 black summer bushfires killed as much as 60% of the trees in some areas that escaped the fires, according to new research. While Australian species are typically hardened to extreme conditions, the record heat and dryness of 2019 pushed some common tree varieties beyond their thresholds, potentially threatening whole ecosystems if they don’t grow back. Working off information about diebacks supplied to the citizen science website the Dead Tree Dectective, researchers at Western Sydney University’s Hawkesbury Institute for the Environment assessed the health of 18 tree species across 15 New South Wales forest and woodlands. Guardian article at MSN 4 Link to comment Share on other sites More sharing options...
Tatetopa Posted December 4, 2021 #2 Share Posted December 4, 2021 I can see it in the forests of Oregon too. Cedar cottonwood and alder trees that require more moisture are dying in areas where fir will replace them. Fir gives way to some species of pine where the environment is drying, especially in summer 1 Link to comment Share on other sites More sharing options...
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