Comparison of different control strategies on bigheaded carps in the Illinois River.

Proportional change in the abundance of bigheaded carp in Dresden Island Pool (i.e. invasion front) of the Illinois River after 25-year simulations of varying harvest scenarios. Proportional change is relative to the reference scenario (i.e. zero harvest mortality, baseline movement rates). A harvest of 1 represents 100% of fish being removed annually and a harvest of 0 indicates no harvest. A proportional change of zero indicates that a scenario had the same effect as the no-harvest reference scenario (red line), and the blue line indicates a 90% decrease in the population size relative to the no-harvest reference scenario (target reduction levels). Outliers are not displayed.. First published in Kallis et al. (2023).