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Old 03-03-2021, 05:18   #1
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Australian ecosystems face ‘existential threat’

Aussie ecosystems face ‘existential threat’

Nineteen key Australian ecosystems are collapsing, because of combined pressure from climate change, and other human impacts, write ecologist Dana Bergstrom and colleagues. From tropical savannahs, to kelp forests, these ecosystems have changed in a substantial, negative way, from their original state, and are unlikely to recover without a major course correction.
“Evidence of their demise shows we’re exceeding planetary boundaries,” write the researchers. They suggest a framework for positive actions — many of which build upon existing efforts — that can help to protect, or restore, ecosystems at local and global levels.

‘Existential threat to our survival’: see the 19 Australian ecosystems already collapsing” ~ by Dana M Bergstrom et al
“... This grave reality is what our major research paper, published February 25/21 [1], confronts.
In what may be the most comprehensive evaluation of the environmental state of play in Australia, we show major and iconic ecosystems are collapsing across the continent and into Antarctica. These systems sustain life, and evidence of their demise shows we’re exceeding planetary boundaries.
We found 19 Australian ecosystems met our criteria to be classified as “collapsing”. This includes the arid interior, savannas and mangroves of northern Australia, the Great Barrier Reef, Shark Bay, southern Australia’s kelp and alpine ash forests, tundra on Macquarie Island, and moss beds in Antarctica ...”


[1] “Combating ecosystem collapse from the tropics to the Antarctic” ~ by Dana M. Bergstrom and Barbara C. Wienecke et al

[1] Data

[1] Methods
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