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Definition The generally accepted definition of Allee effect is positive density dependence, or the positive correlation between population density and individual fitness. It is sometimes referred to as "undercrowding" and it is analogous (or even considered synonymous by some) to "depensation" in the field of fishery sciences. [1] [4] Listed below are a few significant subcategories of the ...
Demographic features of the population of Hong Kong include population density, ethnicity, education level, the health of the populace, religious affiliations, and other aspects. Hong Kong is one of the most densely populated areas in the world, with an overall density of some 6,300 people per square kilometre. [2]
Population inversion. In physics, specifically statistical mechanics, a population inversion occurs while a system (such as a group of atoms or molecules) exists in a state in which more members of the system are in higher, excited states than in lower, unexcited energy states. It is called an "inversion" because in many familiar and commonly ...
As of 2016, the United Nations estimates the total population at 38,140,000. [4] It covers an area of approximately 13,500 km 2 (5,200 mi 2 ), [5] giving it a population density of 2,642 people/km 2. It is the second-largest single metropolitan area in the world in terms of built-up or urban function landmass at 8,547 km 2 (3,300 mi 2 ), behind only the New York City metropolitan area at ...
^ For determining population density of India and the State of Jammu and Kashmir, the data excludes areas claimed by India but controlled by Pakistan (78,114 km2) and China (5,180 km2 in Shaksgam Valley and 37,555 km2 under Aksai Chin and other areas).
Urban area. An urban area, built-up area or urban agglomeration is a human settlement with a high population density and an infrastructure of built environment. This is the core of a metropolitan statistical area in the United States, if it contains a population of more than 50,000.
Nassau County on Long Island, New York (above) is emblematic of the continuous sprawl making up the inner suburbs of New York City, in contrast with Monroe Township, New Jersey (below), characteristic of an outer suburb, or exurb, of New York City, with a lower population density.