Question

2. A small lake is capable of supporting both bluegill and small- mouth bass. These two bony fish species compete for similar food resources. The carrying capacity of this lake for bluegill (K1) is 1,500 and for bass (K2) is 500. After some careful measurement, we find that a is 0.5 and that Bis 0.25. We stock the lake with 250 bluegill and 750 bass. Over time, will both species be able to co-exist? If not, which one will be driven to extinction in this lake? If so, approximately how many of each species will be present?

Answer 1

Effect of species 2 on species 1

K1' = K1 - alpha*N2

= 1500 - 0.5(750)

= 1500-375

= 1125

effect of species 1 on species 2

K2' = K2 - beta*N1

= 500- 0.25(250)

=500-62.5

= 437.5

they will not co evolve . Bass population outcompetes bluegill

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