Steps in the population model over time to simulate the dynamics of the complete life cycle for reproducing adult oysters and spat including survival for all steps. The adult scenarios start with the number of females in the adult (reproductive) population, the number of spat produced from this population depends on the number of offspring produced and survival of both larvae and spat. The spat scenarios start with the number of spat settled on the settlement material which will result in a reproductive population in year 4 see Table 4 for parameter estimates.