Question

Extrinsic mechanism for population regulation

Answer 1

hey...

In population ecology, density-dependent processes occur when population growth rates are regulatedby the density of a population. ... The data shows that denser populations of the parasite exhibit lower fecundity: they contained fewer eggs.

Answer 2

Extrinsic mechanisms for population regulation are as follows:

• Density-dependent factors are given more importance in extrinsic mechanisms and also external biotic factors are emphasized.
• From outside the population, the extrinsic factors are imposed such as predation, food supply, disease, and parasitism play an effective role in population regulation.
• Weather plays a significant role as the extrinsic factor of regulation. Other components that help in population regulations are water currents, pollution, and chemical limiting factors.