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Bookmark or Share- The Population of Europe: The Demographic Transition and AfterThe acceleration of population growth in the nineteenth century was a direct consequence of declining death rates and stable or even rising fertility rates. In England rising birthrates produced much of the growth, and these were, in turn, the consequence of increased incidence of marriage and earlier age at marriage and not of rising marital ...
- J-shaped Growth Curve - Encyclopedia.comJ-shaped growth curve A curve on a graph that records the situation in which, in a new environment, the population density of an organism increases rapidly in an exponential (logarithmic) form, but then stops abruptly as environmental resistance (e.g. seasonality) or some other factor (e.g. the end of the breeding phase) suddenly becomes effective.
- Population Growth - Encyclopedia.comGrowth from 1950 to 1985 was even more dramatic; by 1985, the human population was 5 billion. World population had doubled in thirty-five years. By 2000 global population was 6 billion and is projected to be 9 billion in 2050. Population growth did not become exponential until around 1750.
- S-shaped Growth Curve - Encyclopedia.comS-shaped growth curve (sigmoid growth curve) A pattern of growth in which, in a new environment, the population density of an organism increases slowly initially, in a positive acceleration phase; then increases rapidly approaching an exponential growth rate as in the J-shaped curve; but then declines in a negative acceleration phase until at zero growth rate the population stabilizes.
- Food Supply and Population - Encyclopedia.comFOOD SUPPLY AND POPULATIONThe relationship between a population and its food supply is a matter of prime importance. Awareness of this is reflected, for example, in the Chinese characters corresponding to the English word population: 人 口. In these characters, a human figure appears on the left; an open mouth–requiring food–is on the right.
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