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Carolina Murcia, James Aronson, Gustavo Kattan, David Moreno-Mateos, Kingsley Dixon and Daniel Simberloff (2014)

A critique of the ‘novel ecosystem’ concept

Trends in Ecology & Evolution, 29(10):548-553.

The ‘novel ecosystem’ concept has captured the attention of scientists, managers, and science journalists, and more recently of policymakers, before it has been subjected to the scrutiny and empirical validation inherent to science. Lack of rigorous scrutiny can lead to undesirable outcomes in ecosystem management, environmental law, and policy. Contrary to the contentions of its proponents, no explicit, irreversible ecological thresholds allow distinctions between ‘novel ecosystems’ and ‘hybrid’ or ‘historic’ ones. Further, there is no clear message as to what practitioners should do with a ‘novel ecosystem’. In addition, ecosystems of many types are being conserved, or restored to trajectories within historical ranges of variation, despite severe degradation that could have led to their being pronounced ‘novel’.

novel ecosystems, global change, ecological thresholds, ecological restoration
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