Wt«t* 

 Removal 



Oyttac 



Larva* Production 

 and Migration 



Figure 9. This representation of the major factors controlling the survival and growth 

 of oysters is an example of population-level models. 



Hypothetical Basin Model 



B««ln Hydroloqic PTOc»«f « 



B«»ln N««uf«l R»aoufC« Productivity 



Figure 10. For simplicity, the basin is considered as four interacting sets of processes. 



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