Question

You should be able to complete a logistic growth curve for a population of snakes that colonized a Pacific island but then stabilized at about 1000 individuals. Describe how rr changes along the length of the curve and suggest factors responsible for each change in rr.

Answer 1

When a species organism starts living on a land, its population starts to increase if conditions are favorable for its survival. The population will increase rapidly at first because there will be enough resources such as water, food, light, shelter etc. This will be the R constant in a graph.

As the population will increase rapidly, the resources will start getting depleted and competition will begin among the snake population for resources. As a result, the population will start to decline which will be the R declining phase.

Finally, the population will achieve its carrying capacity rate which will be R 0, after the declining phase. This phase will be ideal for the survival of the snake population on the Pacific Island.