Equilibrium reference point calculations for the next generation of spatial assessments

Fish populations with spatial structure inherently violate the assumption of a single well-mixed stock, necessitating use spatially-structured population dynamics models. Accounting for accurately and easily is major goal next generation stock assessment software development. Reference points (e.g., limit or target harvest rates their associated biomass) are inherent to assessments often calculated under equilibrium conditions. However, calculation process can be challenging We outline how calculate quantities within models where density-dependence in recruitment local. compare those values equivalent situations when global, thereby extending set on which could based. Results suggest that our method calculating reference local performed using straightforward optimization routine, provide clearer understanding effects fishing population. Finally, we address areas research development needed integrate existing management systems.