Dataset called: weekly_fin_nosum.csv include weekly call rate index for each call type (20-Hz and 40-Hz) and the corresponding simulated zooplankton biomass. This dataset is then used in the R code supplied for modelling through Generalised linear models. The code is self-explanatory. Dataset called: fin_month_year.csv includes call rate index for the two call types and is used for the code to create figure 2A & B. Dataset called: all_prey.csv includes weekly simulated prey biomass that is used for the code to create Fig. 2C.