CO 



c 



E 



o 



DC 



3 



DC 

 O 



d 



z 

 i- 

 o 



0) 



>- 



B. 



0.5 k 



Population Numbers (N) 



0.5 k 



Population Numbers (N) 



Figure 1 . 1 



Typical density-dependent logistic models for 

 recruitment (A) and yield (B) in relation to 

 animal numbers as an assumed stable carrying 

 capacity (K) is reached. 



CO 



CE 



C 

 o> 



E 



o 



o> 

 cr 



o 



<D 



oc 

 o 



6 



z 



o 



a> 



>- 



B. 



Population 



0.5 k 

 Numbers 



(N) 



— K 



0.5 k 

 Population Numbers (N) 



Figure 1.2 



Modified density-dependent 

 recruitment (A) and yield (B) 

 animal numbers as an assumed 

 capacity (K) is reached. These 

 that most 

 near K. 



models for 



in relation to 



stable carrying 



models assume 



density dependent change takes place 



10 



