Natural selection is any consistent difference in fitness among different classes of biological entities.

TLS Online TPP Program

#Id: 9117

#Unit 10. Ecological Principles

The number of predators, P, increase when prey numbers are high and decrease when prey numbers, N

TLS Online TPP Program

#Id: 9118

#Unit 10. Ecological Principles

The predator zero isocline

A specific number of prey will keep the predator population at zero growth.

N=m/es

TLS Online TPP Program

#Id: 9119

#Unit 10. Ecological Principles

TLS Online TPP Program

#Id: 9120

#Unit 10. Ecological Principles

I-Predator carrying capacity: Predator can no longer drive prey to extinction. Stable coexistence

TLS Online TPP Program

#Id: 9121

#Unit 10. Ecological Principles

II- if a predator has multiple prey

If prey abundances are not strongly positively correlated then as one prey species becomes scarce, the predator can continue to feed and increase its population size

TLS Online TPP Program

#Id: 9122

#Unit 10. Ecological Principles

One organism feeds on another but does not normally kill it.