The difference in mean catch per gill-net set before Pre-2000 and Post-2005 six northern Minnesota lakes.

Means from the Pre-2000 and Post-2005 period are calculated using a hierarchical model that accounts for non-random spatial dispersion of fish (Poisson-lognormal). Differences with 95% credible intervals that do not overlap zero are highlighted with bold text. Positive differences indicate an increase in catch per gill-net set.