160 



140 



120 



100 



20 



^j(E) 



Stable November 1 Population 

 Doe Hunting O'i 

 Fawn Hunting OX 



( (F) Stable November 1 Population 

 Doe Hunting 30% 

 Fawn Hunting 15% 



JCF) Yield at Stable Population 

 Doe Hunting 30% 

 Fawn Hunting 15% 



30 40 50 60 

 Percent Bucks Taken Annually 



Fi^re 6. — Yield and population numbers at equilibrium for two doe- 

 fawn hunting strategies and variable buck hunting percentages. 



research plans and data collection procedures 

 for monitoring the real system. Outside of this 

 important research administration outcome, 

 information about consequences of manage- 

 ment policies which might otherwise not be 

 obvious can be provided. For example, our 

 results to date indicate that annual revisions 

 of the hunting regulations will not, in general, 

 cause management objectives to be attained 

 more rapidly than following a fixed hunting 

 strategy. This is due to the compounding ef- 

 fects of random variability and the difficulties 

 in monitoring the system. 



The systems analysis approach, and its con- 

 comitant technique of computer simulation, 

 can and has been used to study other wildlife 

 resources such as fish populations. Models de- 

 veloped for fish populations would necessarily 

 incorporate the unique features of each system, 

 and the output would be designed according 

 to the special needs of the resource manager. 

 However, further exploration of the usefulness 

 of computer simulation in studying fish popu- 

 lations is needed before the optimism shown 

 for big game management can be expressed 

 for management of fisheries. 



132 



