Data underlying the article "Timing matters: sampling frequency for early-warning indicators across food web components in a virtual lake".

This dataset contains all files to run PCLake+ with GRIND for MATLAB and the final output. PCLake+ is an aquatic ecosystem model used to simulate food web dynamics in lakes (Janssen et al., 2019). We used the ecosystem model PCLake+ to simulate a default lake of 2 m depth and a fetch of 1000 m going through a critical transition from either clear to turbid (eutrophication) or turbid to clear (oligotrophication). We simulated these critical transitions by respectively linearly increasing (from 0.00001 to 0.008 gP m-2 d-1) or decreasing (0.008 to 0.00001 gP m-2 d-1) the phosphorus load over 50 years and a constant N:P ratio of 10. Before the simulation, we allowed the model to run to equilibrium (spin-off time of 50 years) as a start position for the initial states of the final runs. Daily weather variations as perturbations were simulated by adding stochasticity to the temperature function in PClake+ using the “Dwiener” function available in Matlab (Siegert and Friedrich, 2001).