Maximum production from a complex of stocks with local adaptation of subpopulations. Endangered or rare species 2. Harvested species 3. Controlling harmful species 4. The following list very briefly outlines the contribution of some early demographers to the understanding of population processes.
Increase tends to be prevented by certain limiting factors acting on birth and death rates.
Plato - attributed population regulation to the balance between fertility and immigration on one side, and mortality and emigration on the other. He noted wars and pestilence as leading causes of mortality, and mentioned relative sterility due to social conditions. He stated that under such circumstances, they were then controlled by want and disease. He recognized that increased density tended to intensify mortality due to disease and various aggressive acts such as war, murder, etc. This was the first life table.