
Description:Two populations may compete by means of negative interactions. The competing populations are without food limitations and each population has a self crowding limitation. With sufficient negative effects, one population may drive out the other. Examples: 

Variables:E = Energy sourceQ, Q2 = two populations K1, K2 = growth rates K3, K4 = mortality rates K5, K6 = interaction coefficients Equations:DQ1 = K1*E*Q1  K3*Q1*Q1  K5*Q1*Q2DQ2 = K2*E*Q2  K4*Q1*Q1  K6*Q1*Q2 Simulation:The graph shows the changes of Q1 (blue) and Q2 (green) over a time period.Source code: Interact.java 

"What if" Experiments: 