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The growth of the Hispanic population through immigration and high birth rates is noted as a partial factor for US population gains in the last quarter-century. The 2000 census revealed that Native Americans had reached their highest documented population, 4.5 million, since the US was founded in 1776. [3]
Diversity index. A diversity index is a method of measuring how many different types (e.g. species) there are in a dataset (e.g. a community). Some more sophisticated indices also account for the phylogenetic relatedness among the types. [1]
Population geography. Satellite image of Earth at night. Population geography relates to variations in the distribution, composition, migration, and growth of populations. Population geography involves demography in a geographical perspective. [a] It focuses on the characteristics of population distributions that change in a spatial context.
Biodiversity is commonly measured in terms of taxonomic richness of a geographic area over a time interval. In order to calculate biodiversity, species evenness, species richness, and species diversity are to be obtained first. Species evenness[ 181 ] is the relative number of individuals of each species in a given area.
Genetic diversity. A graphical representation of the typical human karyotype. Genetic diversity is the total number of genetic characteristics in the genetic makeup of a species. It ranges widely, from the number of species to differences within species, and can be correlated to the span of survival for a species. [1]
Cultural diversity is the quality of diverse or different cultures, as opposed to monoculture. It has a variety of meanings in different contexts, sometimes applying to cultural products like art works in museums or entertainment available online, and sometimes applying to the variety of human cultures or traditions in a specific region, or in ...
Population size is directly associated with amount of genetic drift, and is the underlying cause of effects like population bottlenecks and the founder effect. [1] Genetic drift is the major source of decrease of genetic diversity within populations which drives fixation and can potentially lead to speciation events. [1]
This index of cultural diversity is biased towards linguistic variations as opposed to genetic diversity and other variations. It should also be noted that the date of collection for data regarding ethnicity varies drastically between countries from 1981 to 2001 while data for linguistic and religious fractionalisation was collected in 2001.