F_1=Uniform(0,200) b=0.005 R_1=Uniform(0,200) c=0.2 e=0.2 F_1 e b R_1 c F=F_1+e*b*R_1*F_1-c*F_1+Normal(0,2) a=0.04 R_1 a b F_1 R=R_1+a*R_1-b*R_1*F_1+Normal(0,2) F 127 53 188 91 R 136 198 178 224 a 239 15 279 40 b 309 56 350 81 F-1 9 54 70 92 R-1 18 198 67 228 e 339 150 379 175 c 332 99 372 124 R(n+1) = R(n) + a*R(n) - b*R(n)*F(n)\nF(n+1) = F(n) + e*b*R(n)*F(n) - c*F(n)\n\nwhere the parameters are defined by:\n\na - the natural growth rate of rabbits in the absence of predation,\nc - the natural death rate of foxes in the absence of food (rabbits),\nb - the death rate per encounter of rabbits due to predation,\ne - the efficiency of turning predated rabbits into foxes. 410 59 902 230 Source of the model:\nhttps://www.stolaf.edu/people/mckelvey/envision.dir/nonDE.lotka-volt.html 14 253 578 291