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In 1974, Hardin published two articles describing his view of "lifeboat ethics" in Psychology Today [2] and BioScience. [3] At the time, based on per-capita gross national product, Hardin asserted that approximately two-thirds of the world's population was "desperately poor" and the remaining one-third was "comparatively rich" before launching his metaphor of each rich country being in a full ...
Thomas Robert Malthus FRS (/ ˈmælθəs /; 13/14 February 1766 – 29 December 1834) [1] was an English economist, cleric, and scholar influential in the fields of political economy and demography. [2] In his 1798 book An Essay on the Principle of Population, Malthus observed that an increase in a nation's food production improved the well ...
Malthusianism. Malthusianism is a theory that population growth is potentially exponential, according to the Malthusian growth model, while the growth of the food supply or other resources is linear, which eventually reduces living standards to the point of triggering a population decline. This event, called a Malthusian catastrophe (also known ...
Ecological Economics (journal) Related topics. v. t. e. The Limits to Growth (LTG) is a 1972 report [2] that discussed the possibility of exponential economic and population growth with finite supply of resources, studied by computer simulation. [3] The study used the World3 computer model to simulate the consequence of interactions between the ...
I = (PAT) is the mathematical notation of a formula put forward to describe the impact of human activity on the environment. I = P × A × T. The expression equates human impact on the environment to a function of three factors: population (P), affluence (A) and technology (T). [1] It is similar in form to the Kaya identity, which applies ...
Carrying capacity is applied to the maximum population an environment can support in ecology, agriculture and fisheries. The term carrying capacity has been applied to a few different processes in the past before finally being applied to population limits in the 1950s. [1] The notion of carrying capacity for humans is covered by the notion of ...
Human overpopulation (or human population overshoot) is the idea that human populations may become too large to be sustained by their environment or resources in the long term. The topic is usually discussed in the context of world population, though it may concern individual nations, regions, and cities. Since 1804, the global living human ...
Tourism carrying capacity (TCC) is an imperfect [1] but useful approach to managing visitors in vulnerable areas. [2] The TCC concept evolved out of the fields of range, habitat and wildlife management. In these fields, managers attempted to determine the largest population of a particular species that could be supported by a habitat over a ...