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Topic: Population density


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In the News (Mon 11 Dec 17)

  
  World population and density by year and by area | Time for change
World population density by geographical area and by year from 1950 to 2050
Population density by year and by geographical area:
Population by country for 2007 and 2050 (ordered by population in 2050)
www.timeforchange.org /growing-world-population   (264 words)

  
  Population Dynamics
he "dynamics" of bird populations, the ways in which their numbers grow and shrink as time goes by, are controlled by the same general factors that control the size of human populations.
Population density is, technically, the number of individuals per unit area.
In an average lifetime, the average female in each bird population lays many more eggs than are required to replace her and her mate, if the chicks from all of her eggs were to mature into reproducing adults.
www.stanford.edu /group/stanfordbirds/text/essays/Population_Dynamics.html   (1144 words)

  
  Population density - Wikipedia, the free encyclopedia
Population density is a measurement of population per unit area or unit volume.
Population density is a common biological measurement and is often used by conservationists as a more appropriate measure than absolute numbers.
City population is however, heavily dependent on the definition used for the urban area: densities will be far higher for the central municipality than when more recently-developed and as yet administratively unincorporated suburbs are included, as in the concepts of agglomeration or metropolitan area, the latter including sometimes neighbouring cities.
en.wikipedia.org /wiki/Population_density   (706 words)

  
 NationMaster.com - Encyclopedia: Population density
Population genetics is the study of the distribution of and change in allele frequencies under the influence of the four evolutionary forces: natural selection, genetic drift, mutation, and migration.
Population health is an approach to health that aims to improve the health of the entire population and to reduce health inequities among population groups.
Population density, according to the definition above, depends on the scale of the sampling area used, and is difficult to define as a real-valued continuous function over the area in question.
www.nationmaster.com /encyclopedia/Population_density   (2343 words)

  
 Introduction to Population Ecology
The first significant contribution to the theory of population ecology was that of Thomas Malthus, an English clergyman, who in 1798 published his Essay on the Principle of Population.
Populations of prey and predator were predicted to flucuate in a regular manner (Volterra termed this "the law of periodic cycle").
Generalized relationship between population density of a herbivore species, natality, mortality caused by enemies (with a peak at moderatly low low population density) and intraspecific competition (with a peak at relatively high population density) (after Southwood 1975).
ipmworld.umn.edu /chapters/ecology.htm   (3477 words)

  
 Lesson Plans - A Look at the Population Density of the United States   (Site not responding. Last check: )
"Population density" is the term that describes the number of individuals occupying an area in relation to the size of that area.
The population density is derived by dividing the number of people by the area they occupy.
On their outline maps of the United States, have students use different colors or patterns to indicate those states that have a population density greater than the United States average (70 people per square mile) and those states with a population density less than the United States average.
www.nationalgeographic.com /xpeditions/lessons/01/g912/density.html   (1046 words)

  
 population density
On top of all that, the population density in a dorm is ridiculously high, with roommate pairs crammed into 10-foot by 12-foot boxes with neighbors literally...
Census Bureau population estimates show that the seven south Texas coastal counties in the hurricane warning area have an overall population density of 153.3...
In contrast, the population density in Shanghai, Beijing and Guangzhou was respectively 2,902, 881 and 975 people per square kilometre at the end of 2003.
www.mongabay.com /igapo/biotech/population_density.html   (3355 words)

  
 Density Using Land Area
Population, Housing Units, Area, and Density for Counties: 2000
The 1970, 1980, and 1990 census counts from this source are revised from the tabulated versions.
Population Density of the United States and Selected Maps of Race and Hispanic Origin: 2000
www.census.gov /population/www/censusdata/density.html   (297 words)

  
 Communities At Risk: Population Density
Population density for determining geographic areas that meet the population density requirements of the National Fire Plan.
Population density was determined using tax lot data, where it existed and was available.
WUI Code was used to deliniate areas meeting the population density criteria in the National Fire Plan and determine a value for Life.
www.oregon.gov /DAS/EISPD/GEO/docs/metadata/wuicode.htm   (336 words)

  
 EPA-MAIA - Population Density and Change   (Site not responding. Last check: )
According to the United States Census Bureau, the population of the mid-Atlantic region in 1990 was about 26,000,000 people, which represents about 10% of the total population of the United States.
As would be expected, the watersheds with the highest density of people located around the larger metropolitan areas - Norfolk, Washington-Baltimore, Philadelphia, and Pittsburgh - and the watersheds with the least density are located in rural and mountainous areas.
The watershed with the highest population density has over 3,500 people per square kilometer, while the watershed with the lowest population density has about 11 people per square kilometer.
www.epa.gov /maia/html/dens-chg.html   (402 words)

  
 Population Density   (Site not responding. Last check: )
Beijing conducted a sampling survey of 1% of its population, and the result reveals that the population density of urban areas recorded 22,210 per square...
Furthermore, the population density of each broad region has remained roughly similar.
Allahabad, March 15 (UNI): The Allahabad district of Uttar Pradesh holds the dubious disntinction of having the maximum density of population in the country.
www.wikiverse.org /population-density   (788 words)

  
 Population Density vs. Cryonics   (Site not responding. Last check: )
Since the Netherlands have the > highest population density of any country in the world (I feel pretty > claustrophobic when I go there), that may well be na most obvious > explanation why there seems to be no one there who wants to get even close > to this topic.
England has a high population density (not to be confused with the lower averaged population density of Great Britain), yet England is the only place other than the US where cryonics facilities exist.
Finally, Hong Kong has a population density more than 10 times that of the Netherlands, and Monaco is also more densely populated; but I don't know what attitudes are to cryonics in those countries.
www.cryonet.org /cgi-bin/dsp.cgi?msg=10329   (251 words)

  
 Population Density   (Site not responding. Last check: )
Therefore, it can be said that the population density in the coastal counties is increasing faster than in the rest of the state.
The greatest percent change in coastal county population density occurred between 1950 and 1960, when the density increased by 60.58 persons per square mile, or 90.20 percent.
The largest increase in the state’s population density also occurred between 1950 and 1960, whereas the greatest change for the non-coastal countiespopulation density occurred between 1970 and 1980.
www.pepps.fsu.edu /FACT/sec_A/dense.html   (518 words)

  
 PAI: Resources   (Site not responding. Last check: )
Projected increases in population density are shown as progressively darker shades of orange and decreases in density in blue.
Population density varies widely, from the one or two people who may inhabit a square mile of scrub to the hundreds of thousands on the same amount of land in Hong Kong.
Given the diversity of population change between 1990 and 1995, there’s no easy or obvious way to bring all the grid cells smoothly to the point where a nation’s population equals the total that UN demographers project for 2025.
www.populationaction.org /resources/publications/mappingthefuture/index.htm   (1338 words)

  
 Checks on Population Growth
The lower population densities of the previous summer had permitted most of the animals to complete their life cycle.
The house finch, Carpodacus mexicanus, — native to western North America — is a recent immigrant to the eastern United States where it is parasitized by a mycoplasma that reduces the lifespan and fecundity of the birds.
Because of this lag, one might expect that the lemming population would continue to outstrip the weasel population until the lemmings bumped into the carrying capacity of their environment (e.g., availability of food and nesting sites).
users.rcn.com /jkimball.ma.ultranet/BiologyPages/P/Populations2.html   (3620 words)

  
 CanadaInfoLink is everything you wanted to know about Canada and canadian information about provinces, provincial ...
Population density is made up of two variables.
Population is unevenly distributed for a number of reasons.
Over 90% of the world's population is found in the northern hemisphere, where there is most land.
www.canadainfolink.ca /chartten.htm   (285 words)

  
 Soil erosion and population density
For example, in Sudano-Sahelian zones, when the population exceeds 20-40 inhabitants/km², the fallow period is shortened to the point of ineffectiveness, and one speaks of a densely populated degraded area when the population reaches about 100 inh/km².
It may then be concluded that the environment becomes degraded as population density grows, until it reaches a certain level after which farmers are obliged to change their production systems.
By contrast, bench terracing or irrigated Mediterranean terraces coincide with a dense population and a shortage of land for cultivation (especially in mountain areas) and occur where labour is cheap.
www.fao.org /docrep/T1765E/t1765e06.htm   (1610 words)

  
 U.S. Census 2000 - Population Density   (Site not responding. Last check: )
What I discovered is that out of the 3140 counties listed in the Census population data only 178 counties were calculated to have a population density over one person per acre.
The lowest calculated population density was the Yuokon-Koyukuk Census Area with a calculated population density of 0.000044923 persons per acre.
with a population density of 25.62 people per acre), all of the ten most densely population counties in the United States are along the East Coast.
www.gislounge.com /features/aa041101c.shtml   (222 words)

  
 Lesson Exchange: A Look at the Population Density of the United States (Middle, Geography)
Have them research the land area in square miles (or square kilometers) and resident population for each state, then calculate the population density.
Use the formula Population density = Population/Land Area to calculate the density for each state and the entire United States.
On their outline maps of the United States, have students use different colors or patterns to indicate those states that have a population density greater than the United States average (70 people per square mile) and those states with a population density less than the United States average.
www.teachers.net /lessons/posts/3303.html   (842 words)

  
 The Hive Group - Creators of Honeycomb Technology
Population, population density, and geographic area estimates used in this map are taken from the CIA Factbook 2004, a wonderful public domain source of information.
Many countries have populations and geographical area added to their totals on the basis of protectorate or commonwealth holdings.
Since Greenland is humungous and not very populous, Denmark's population density ends up being, well, not very high.
www.hivegroup.com /world.html   (525 words)

  
 Election result maps
However, as pointed out by many others, this is misleading because it fails to take into account the fact that most of the red states have small populations, whereas most of the blue states have large ones.
That is, states are drawn with a size proportional not to their sheer topographic acreage -- which has little to do with politics -- but to the number of their inhabitants, states with more people appearing larger than states with fewer, regardless of their actual area on the ground.
The electoral votes are apportioned roughly according to states' populations, as measured by the census, but with a small but deliberate bias in favor of smaller states.
www-personal.umich.edu /~mejn/election   (1238 words)

  
 WWF - Population density
Population density can be described as the number of individuals of a species per unit area.
NASA provides a world population density map to show where people live on Earth.
Some researchers are already calling the human population explosion a tragedy, and insist that we must take measures to strive for a negative growth rate.
www.panda.org /news_facts/education/middle_school/homework_help/webfield_trips/pop_density/index.cfm   (364 words)

  
 The Atlas of Canada - Population Density, 2001   (Site not responding. Last check: )
Canada, with 3.3 people per square kilometre, has one of the lowest population densities in the world.
In 2001, most of Canada's population of 30 million lived within 200 kilometres of the United States.
Human habitation in the solitary north clings largely to scattered settlements: villages among vast expanses of virgin ice, snow, tundra and taiga.
atlas.gc.ca /site/english/maps/peopleandsociety/population/population2001/density2001   (168 words)

  
 Honduras - Population Density   (Site not responding. Last check: )
Although Honduras, with forty-six inhabitants per square kilometer, has a relatively low population density, especially when compared to its neighbors to the west, uneven distribution has contributed to overpopulation in certain areas.
In 1989 the department of Cortés, on the west bank of the Río Ulúa, had a population density of 188 inhabitants per square kilometer.
The two cities are also projected to account for 25 percent of the total population of Honduras by the end of the twentieth century.
countrystudies.us /honduras/41.htm   (232 words)

  
 [No title]   (Site not responding. Last check: )
The objective of the study was to evaluate the HDA for summertime conditions, using population density as a constraint.
The performance results were used to determine the optimum population density threshold at which to score the reliability of the POSH parameter.
Analysis of performance statistics at various population density thresholds helps to determine the optimum threshold at which to score the reliability of the POSH parameter.
www.nssl.noaa.gov /swat/NWA97_HDA/HDAstudy.html   (1241 words)

  
 Population density - Wikipedia, the free encyclopedia   (Site not responding. Last check: )
Low population densities may cause an, where low densities lead to further reduced fertility.
List of Administrative Counties of England by Population Density
Demographics of the Netherlands - Population density comparisons
www.moorpark.us /project/wikipedia/index.php/Population_density   (732 words)

  
 Star: Question was about population density
Gauteng has an area of 17 010 sq km, with a population of 8 837 178, giving it a density of 519,5 people per sq km.
KwaZulu Natal has a population of 9 426 017, but an area of 92 100 sq km, giving it a population density of 102,35 people per sq km.
According to the Microsoft Encarta Encyclopedia: Gauteng is the smallest of the South African provinces, but has the highest population density.
www.thestar.co.za /index.php?fSectionId=228&fArticleId=2135419   (171 words)

  
 POPULATION AND POPULATION DENSITY
the population of the United Kingdom is 57,500,000 and the area is 244,046 square kilometres.
Densely populated is the opposite of sparsely populated.
Mexico has a population of 95,000,000 but it is a big country - 1,973,000 square kilometres - which gives a population density of 48 persons per square kilometre.
website.lineone.net /~dazrussell/population.html   (882 words)

  
 03/28/03 - The New York Times’ Big Lie About Population Growth
According to a recent United Nations report, population growth rates are dropping dramatically round the world.
Then the Times, referencing the U.N. study, writes that America’s population “is projected to be 409 million in 2050 up from 285 million today.” It must not have checked the Population Clock on www.census.gov.
In fact, of course, the consensus among labor economists, as established by the National Research Council’s 1997 report The New Americans, is that immigration does not add significantly to Americans’ wealth — and is a significant cost in some states, because of transfer payments like education, emergency room care and welfare.
www.vdare.com /guzzardi/big_lie.htm   (956 words)

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