Table 1. —Cont'd. 



Approach- 

 Technique 



Advantages 



Disadvantages 



Partial 

 Ecosystem 

 (Limited 

 Components) 



Forces modeler to focus 

 on study objectives. 



May miss important interactive 

 mechanisms . 



Increased reliance on assumptions 

 of system functions. 



Holistic 

 Ecosystem 



Potential to represent 

 full system complexity. 



Excellent research tool. 



Data requirements exhaustive. 



Many transformations and func- 

 tional relationships poorly 

 unders tood. 



Full range of impact 

 studies possible. 



Full parameter sensitivity study 

 often impossible. 



Little value in most management 

 scenarios . 



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