Regime shifts in southern forests: feedbacks, fire and mammals

Authors: George Perry*, University of Auckland
Topics: Biogeography
Keywords: fire, invasive species, regime shifts, stable states, forests
Session Type: Virtual Paper
Day: 4/7/2021
Start / End Time: 3:05 PM / 4:20 PM
Room: Virtual 9
Presentation File: No File Uploaded

Changes in fire regime and the effects of exotic mammals, including herbivory and predation, have shaped temperate forests in New Zealand and elsewhere in the Southern Hemisphere. Complex feedbacks between fire, mammals and vegetation can slow succession and potentially drive landscapes into 'fire traps'. Drawing on model-based research from northern New Zealand and empirical studies from elsewhere in New Zealand and South America, I will describe how these processes can lead to the generation and maintenance of highly resilient alternative stable states and the challenges that these dynamics pose for landscape-level conservation and restoration.

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