Presentation on theme: "We now look at another way population changes"— Presentation transcript:
1 We now look at another way population changes MigrationWe now look at another way population changes
2 Migration vs Circulation Migration is a permanent or long term relocation of an individual or group from one place to another. EX: moving from Mexico to the United StatesCirculation is a temporary, often cyclical, relocation of an individual or group from one place to another. EX: going to college, farm workers
3 Moving in or out – migration involves both Emigration is moving out or departingImmigration is moving in or arrivingNet migration is the change in population of a location as a result of both immigration and emigration.Net Migration=Number of immigrants-number of emigrants
4 Total population change – can be calculated with a demographic equation EX:2009 population=2008 population + natural increase(birth-deaths)+net migration
5 Types of migrationForced migration occurs when a person, group, government, or other entity insists another group must relocate. What examples of forced migration do you know about?Voluntary migration is a long-term or permanent move that is made by choice
6 Ravenstein’s laws of migration Most cover short distances are don’t cross international boundariesMigrants moving to urban areas create gaps that are filled by migrants moving to distant spacesInvolves two opposite processes: dispersion (departure) and absorption (arrival)Migration produces counter flows
7 Ravenstein’s laws cont. Most people migrate to urban areasUrban residents are less likely to migrate that rural residentsWomen migrate more within their own country of birth, men migrate more frequently beyond their country of birth. This trend has changed in the recent years.How does distance decay
8 Push and Pull FactorsAll voluntary migrations involve push and pull factorsPush factors are unfavorable conditions of a place that encourage migrationPull factors are favorable conditions that attract migrantsRefugee – a person who flees to another country because they’re worried about their personal safety.Asylum – protection from persecution. People can seek asylum in another country.
9 Patterns of Global Migration International migrationNorth America: U.S. and Canada are major destinations, why?Authorized immigrants – legal permanent residents, (green card holders)Unauthorized immigrants – people who come on a temporary visa and stay after their visa expires or people who cross a border without being detected. (illegal immigrants)
10 Latin AmericaSince 1950 Latin America has become a region of emigration. Why do you think this is?Transnationalism is when immigrants develop and cultivate ties in more than one country. Have you seen an example of this?
11 EuropeIn the last 60 years Europe has become a region of in-migration.Most of Europe’s population growth in the last few years has been fueled by immigration rather natural increase.
12 Africa African’s make up about 9% of international migrants. Much of migration in Africa was impacted by colonialism. European colonists established mines and plantations and brought workers from one section of the continent to another.Africa has had a serious problem with brain drain. Brain drain is when skilled professionals leave a country to seek a higher paying job and better life elsewhere.
13 Africa contAfrica has a serious problem with brain drain with 10% of their health care professionals leaving.This impacts the areas ability to deal with the AIDS epidemicCivil unrest in Africa has also resulted in internally displaced persons, people who are forcibly driven from their homes to another part of their country.
14 Asia Asia supplies 25% of the worlds migrants, the largest part. Many Asians move in search of jobs.