A Bayesian assessment of the PCB temporal trends in Lake Erie fish communities

► We present temporal trends of polychlorinated biphenyls in Lake Erie fish ► PCBs in walleye appear to increase after the mid-90s.► Coho salmon and rainbow trout PCB levels have been decreasing with weak rates. ► White bass trends appear to have been stabilized over the last decade. ► Failure to consider important fish covariates can impede the detection of PCB trends.