Journal
SCIENCE
Volume 336, Issue 6085, Pages 1175-1177Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1219805
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Funding
- Pappalardo Fellowship
- NIH
- NSF
- Sloan Research Fellowship
- Pew Scholars Program
- Division Of Physics
- Direct For Mathematical & Physical Scien [1055154] Funding Source: National Science Foundation
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Theory predicts that the approach of catastrophic thresholds in natural systems (e. g., ecosystems, the climate) may result in an increasingly slow recovery from small perturbations, a phenomenon called critical slowing down. We used replicate laboratory populations of the budding yeast Saccharomyces cerevisiae for direct observation of critical slowing down before population collapse. We mapped the bifurcation diagram experimentally and found that the populations became more vulnerable to disturbance closer to the tipping point. Fluctuations of population density increased in size and duration near the tipping point, in agreement with the theory. Our results suggest that indicators of critical slowing down can provide advance warning of catastrophic thresholds and loss of resilience in a variety of dynamical systems.
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