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Related Concept Videos

Migration00:53

Migration

Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
Gene Flow02:39

Gene Flow

Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
Self-Esteem and Culture01:26

Self-Esteem and Culture

Self-esteem, a core psychological construct, is intricately shaped by cultural context and varies significantly between collectivist and individualistic societies. In collectivist cultures such as Japan, self-esteem tends to be flexible, context-sensitive, and influenced by relationships. A Japanese student, for instance, may show restraint in formal settings like school but behave more openly among close friends, reflecting the flexible and dynamic nature of self-concept in such...
Leaving Groups02:14

Leaving Groups

The nature of leaving groups strongly influences the outcome of a nucleophilic substitution reaction.
In general, in a nucleophilic substitution reaction, a nucleophile displaces a functional group, called the leaving group, from the substrate to give a substituted product. A leaving group departs the substrate molecule through heterolytic cleavage, taking the pair of electrons with it to become a relatively stable weak base in the form of an anion or a neutral molecule.  
In a nucleophilic...
Population Growth00:57

Population Growth

Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.
Conservation of Declining Populations02:07

Conservation of Declining Populations

Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.

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Related Experiment Video

Updated: May 27, 2026

Digital Microfluidics for Automated Proteomic Processing
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Digital Microfluidics for Automated Proteomic Processing

Published on: November 6, 2009

Emigration from Canada in the 1960s.

L W St John-Jones

    Population Studies
    |November 15, 2011
    PubMed
    Summary

    Canadian emigration volume was estimated at 960,000 people between 1961 and 1971, with 42% being Canadian-born. Emigration levels have likely decreased since 1971.

    Area of Science:

    • Demographics
    • Sociology
    • Canadian Studies

    Background:

    • Estimating emigration from Canada relies on indirect measurement methods.
    • Previous data, like that reported to the 1975 Joint Parliamentary Committee, may underestimate the true volume.

    Purpose of the Study:

    • To estimate the volume of emigration from Canada during the 1961-1971 decade.
    • To analyze the characteristics and destinations of emigrants.
    • To identify shifts in emigration patterns.

    Main Methods:

    • Application of survival ratios to the 1961 Census population (total and segmented).
    • Comparison of calculated 1971 population figures with the enumerated 1971 Census data.
    • Analysis of emigrant origins (Canadian-born vs. immigrants) and destinations.

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    Main Results:

    • An estimated 960,000 individuals emigrated from Canada between 1961 and 1971.
    • Canadian-born emigrants constituted 42% of the total, with the United States as a primary destination.
    • Immigrants tended to return to their countries of origin.

    Conclusions:

    • The estimated emigration volume was double that reported in 1975.
    • Recent trends suggest a potential decrease in emigration levels since 1971.
    • Changing patterns, including shorter immigrant stays and reduced emigration to the US, are noted.