Catastrophic Collapse Can Occur without Early Warning: Examples of Silent Catastrophes in Structured Ecological Models
Figure 6
Early warning signals with correlated noise and discrete noise.
Coefficient of variation and autocorrelation are monitored for increasing predator death rate towards the catastrophic collapse at µP≈0.553. Bifurcation procedure, parameters and colors are identical to Figure 2. (A) Coefficient of variation when pink noise (1/f correlated noise) is added to the death rate of the adult population. (B) Coefficient of variation when discrete white noise is applied directly to the adult population numbers after each time step.