Population - Geography, Urbanization, Distribution: It goes without saying that populations are scattered across space. The typical measure of population in relation to land area, that of population density, is often a meaningless one, since different ar
Ecologists use population density as part of population ecology, which studies the distribution and abundance of animal and plant populations. Both low and high population densities can present challenges for a species. Increased competition for food, predation, migration, and disease are common in are...
Revision 11 consists of estimates of human population density based on counts consistent with national censuses and population registers with respect to relative spatial distribution, but adjusted to match the 2015 Revision of UN World Population Prospects country totals for the years 2000, 2005, 2010...
When we investigate the enrichment of genic alleles across DAnc values, results largely agree with the two-population differentiation results above, showing an enrichment of genic alleles in the two tails of the DAnc distribution (Fig. 1c). The enrichment in genic alleles is slightly stronger in...
"Human Population Distribution Modelling at Regional Level Using Very High Resolution Satellite Imagery." Applied Geography 41: 36-45. doi:10.1016/j.apgeog.2013.03.002.Lung, T.; Ngochoch, J.K.; Lubker, T.; Schaab, G. Human population distribution modelling at regional level using very high-...
Chapter 2: Population http://apod.nasa.gov/apod/ap001127.html Courtesy of NASA Where in the World People Live and Why Population density: a country’s total population relative to land size Assumes an even distribution of population to the land © H.J. de Blij, P.O. Muller, and John...
In the second step, the similarity between two doculects is quantified as the degree to which the distribu- tion of string similarities between synonymous word pairs exceeds the distribution of string similarities between non-synonymous pairs. The distance between two doculects is defined as a ...
Geographical distribution, individual dose rate (ITDR) and body condition of sampled frogs. a Map showing the sampling sites (letters) in the Chernobyl Exclusion Zone (dashed line) and the Slavutych region. b Distribution of the ITDR (μGy.h−1) in the different sampled populations. c Rel...
The distribution reflects the ancestral diversity in Africa, the connectivity of Eurasia, the isolation & drift of the Americas and Oceania, and the separate Denisovan introgression event in Oceania. Oceania is notable for having private high-frequency variants that are all shared with the Denisovan ...
demography, statistical study of human populations, especially with reference to size and density, distribution, and vital statistics (births, marriages, deaths, etc.). Contemporary demographic concerns include the “population explosion,” the interplay between population and economic development, the effe...