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  2. Push and pull factors in migration - Wikipedia

    en.wikipedia.org/wiki/Push_and_pull_factors_in...

    Push and pull factors in migration according to Everett S. Lee (1917-2007) are categories that demographers use to analyze human migration from former areas to new host locations. Lee's model divides factors causing migrations into two groups of factors: push and pull.

  3. Immigration - Wikipedia

    en.wikipedia.org/wiki/Immigration

    Escape from poverty (personal or for relatives staying behind) is a traditional push factor, and the availability of jobs is the related pull factor. Natural disasters can amplify poverty-driven migration flows. Research shows that for middle-income countries, higher temperatures increase emigration rates to urban areas and to other countries.

  4. Push and pull factors - Wikipedia

    en.wikipedia.org/?title=Push_and_pull_factors&...

    Retrieved from "https://en.wikipedia.org/w/index.php?title=Push_and_pull_factors&oldid=1165381847"

  5. Population bottleneck - Wikipedia

    en.wikipedia.org/wiki/Population_bottleneck

    Population bottleneck followed by recovery or extinction. A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events such as famines, earthquakes, floods, fires, disease, and droughts; or human activities such as genocide, speciocide, widespread violence or intentional culling.

  6. Human migration - Wikipedia

    en.wikipedia.org/wiki/Human_migration

    Human migration is the movement of people from one place to another, [1] with intentions of settling, permanently or temporarily, at a new location (geographic region). The movement often occurs over long distances and from one country to another (external migration), but internal migration (within a single country) is the dominant form of human migration globally.

  7. Gene flow - Wikipedia

    en.wikipedia.org/wiki/Gene_flow

    The level of gene flow among populations can be estimated by observing the dispersal of individuals and recording their reproductive success. [4] [11] This direct method is only suitable for some types of organisms, more often indirect methods are used that infer gene flow by comparing allele frequencies among population samples.

  8. Push–pull agricultural pest management - Wikipedia

    en.wikipedia.org/wiki/Push–pull_agricultural...

    Push-pull technology has also been more widely seen as culturally acceptable and congruent because of the way it provides traditional roles for men and women in the agriculture work. [15] Because push-pull technology can fit within existing family frameworks, the practice does not demand an overhaul of existing dynamics. [ 15 ]

  9. Push factors - Wikipedia

    en.wikipedia.org/?title=Push_factors&redirect=no

    This page was last edited on 2 November 2010, at 04:48 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.