Light-driven tipping points in polar ecosystems.

  title={Light-driven tipping points in polar ecosystems.},
  author={Graeme F. Clark and Jonathan Stark and Emma L. Johnston and John W. Runcie and Paul M. Goldsworthy and Ben Raymond and Martin J. Riddle},
  journal={Global change biology},
  volume={19 12},
Some ecosystems can undergo abrupt transformation in response to relatively small environmental change. Identifying imminent 'tipping points' is crucial for biodiversity conservation, particularly in the face of climate change. Here, we describe a tipping point mechanism likely to induce widespread regime shifts in polar ecosystems. Seasonal snow and ice-cover periodically block sunlight reaching polar ecosystems, but the effect of this on annual light depends critically on the timing of cover… CONTINUE READING