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Global tipping point not backed by science: Study
Date:2/28/2013

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"These criteria, however, are very unlikely to be met in the real world," says Professor Brook. "First, ecosystems on different continents are not strongly connected. Second, the responses of ecosystems to human pressures like climate change or land-use change depend on local circumstances and will therefore differ between localities."

The scientists examined four principal drivers of terrestrial ecosystem change ‒ climate change, land-use change, habitat fragmentation and biodiversity loss ‒ and found they were unlikely to induce global tipping points.

Co-author Associate Professor Erle Ellis, University of Maryland, Baltimore County, says: "As much as four fifths of the biosphere is today characterised by ecosystems that locally, over centuries and millennia, have undergone human-driven regime shifts of one or more kinds. Recognising this reality and seeking appropriate conservation efforts at local and regional levels might be a more fruitful way forward for ecology and global change science."


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Contact: Professor Barry Brook
barry.brook@adelaide.edu.au
61-420-958-400
University of Adelaide
Source:Eurekalert

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