4
Chapter



                    Population dynamics
                    Population change
                    The populat...
Core concepts in human geography                   AS Module 2

    At a national government level, a census:             ...
4
Chapter                Population dynamics




                                                                         ...
Core concepts in human geography                     AS Module 2

example Kuwait (2 per 1,000), Bahrain (3 per 1,000) and ...
4
Chapter       Population dynamics

              Stage 1 (high fluctuating) A period of high birth rate and high death r...
Core concepts in human geography                                             AS Module 2


  Case study Demographic change...
4
Chapter                Population dynamics

administer more effective drug treatments. Surgery         compulsory. Betwe...
Core concepts in human geography                                      AS Module 2

   It was hoped that such countries wou...
4
Chapter              Population dynamics


                     Migration
                     The relationship between ...
Core concepts in human geography                                   AS Module 2

Lee’s model
                              ...
4
Chapter              Population dynamics

                                              those seeking asylum (see below)...
Core concepts in human geography                   AS Module 2

Asylum seekers
One definition of asylum is ‘the formal app...
4
Chapter               Population dynamics

Figure 4.6                Males                                              ...
Upcoming SlideShare
Loading in...5
×

Demographic Change in the UK

21,757

Published on

Published in: Technology, News & Politics
2 Comments
4 Likes
Statistics
Notes
  • Mate, Words can't descibe this... Truely Unbelievable!!!!
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • AMAZING!!!!!!!!!!!!
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
No Downloads
Views
Total Views
21,757
On Slideshare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
326
Comments
2
Likes
4
Embeds 0
No embeds

No notes for slide

Demographic Change in the UK

  1. 1. 4 Chapter Population dynamics Population change The population of an area alters as a consequence of both natural change and migration. The annual population change of an area is the cumulative change in the size of a population after both natural change and migration have been taken into account. Table 4.1 Infant Life expectancy Global population Region Birth rate Fertility Death rate mortality rate at birth data World 21 2.8 9 56 67 MEDCs 11 1.6 10 7 76 LEDCs 24 3.1 8 62 65 Africa 38 5.1 14 90 52 North America 14 2.0 8 7 78 Latin America 22 2.6 6 29 72 Asia 20 2.6 7 54 67 Europe 10 1.4 12 7 74 Oceania 17 2.1 7 26 75 Source: World Population Data Sheet (2004) Natural population change The measurement of population characteristics Most of the countries in the world collect data about their populations, usually in the form of a census. This is a detailed collection of information on a regular basis — for example, every 10 years. The data collected include employment char- acteristics, ethnicity, educational attainment, patterns of social activity, and housing type and ownership. In the UK, the data are collated by areas of local government and by postcode. The smallest area is that covered by one census collector — an area known as an enumeration district. The information collected is of use to: I governments — to provide a basis for the allocation of resources to services such as health, education and employment I non-governmental bodies — retailers, advertisers, financial services, property developers and utilities Censuses are not without problems. Some people object to them on the grounds that they infringe privacy. Some people do not return their census forms. Political conditions in some countries make censuses difficult to organise. 108
  2. 2. Core concepts in human geography AS Module 2 At a national government level, a census: Key terms records trends over the previous 10 years which I Birth rate A measure of an area’s fertility. can be projected forward to enable planning in a It is expressed as the number of live births range of social services per 1,000 people in 1 year. helps with prediction of natural population I Death rate The number of deaths per 1,000 change and migration patterns people in 1 year. enables the estimation of national housing I demands Fertility The number of live births per 1,000 women aged 15–49 in 1 year. It is also defined enables the planning of national transport I as the average number of children each demands woman in a population will bear. If this is a snapshot of the diversity of the country I number is 2.1 or higher, a population will replace itself. For businesses and commerce, a census: I can be linked to other data sources, such as credit Infant mortality The number of deaths of card data, to provide information on regional children under the age of 1 year expressed lifestyles per 1,000 live births per year. I enables targeted marketing, based on postcode Life expectancy The average number of areas years from birth that a person can expect to I enables the insurance industry to assess risk more live. effectively Longevity The increase in life expectancy I enables retailers to invest in optimum locations over a period of time. It is a direct result of where spending power is highest improved medical provision and increased I allows firms to target goods to stores according to levels of economic development. People live longer and this creates an older population. the profile of the population. For example, super- markets stock more prepared foods in areas Natural change The change in size of a where there are greater numbers of young single population caused by the interrelationship between birth and death rates. If birth rate adults exceeds death rate, a population will increase. It is easy to see, therefore, that censuses are a If death rate exceeds birth rate, a population useful source of information for geographers and will decline. demographers. Changes over time and factors influencing change Factors affecting fertility In most parts of the world, fertility exceeds both mortality and migration. It is, therefore, the main determinant of population growth. Its importance has increased over time with the worldwide fall in mortality. Several African countries (e.g. Niger, Angola, Uganda and Somalia) have very high birth rates of over 50 per 1,000 per year. At the other end of the scale, Belarus, Bulgaria, Estonia, Italy, Russia and Spain have birth rates of only 9 per 1,000 per year. Why does fertility vary? I The relationship with death rate can be important. Countries in sub-Saharan Africa have high birth rates that counter the high rates of infant mortality (often over 100 per 1,000 live births). One study of sub-Saharan Africa concluded that a woman must have, on average, ten children to be 95% certain of a surviving adult son. 109
  3. 3. 4 Chapter Population dynamics Mark Edwards/Still Pictures Photograph 4.1 A large rural family in the Philippines watching television. Fertility rates depend on a number of factors, including economic issues, education and religion In many parts of the world, tradition demands high rates of reproduction. I Intense cultural expectations may override the wishes of women. Education for women, particularly female literacy, is a key to lower fertility. I With education comes knowledge of birth control, more opportunities for employment and wider choices. Social class is important. Fertility decreases from lower to higher classes or I castes. Religion is of major significance because both Islam and the Roman Catholic I church oppose the use of artificial birth control. However, adherence to religious doctrine tends to lessen with economic development. This is particu- larly well illustrated in Italy. Although it is the location of the Vatican — the home of the pope — the fertility rate in Italy is very low (1.2). This suggests that some form of artificial birth control is taking place. Economic factors are important, particularly in LEDCs, where children are an I economic asset. They are viewed as producers rather than consumers. In MEDCs, this is reversed. The length of time children spend in education makes them expensive, as does the cost of childcare if both parents work. In eastern Europe, economic uncertainty is a major factor causing low fertility rates. There have been several cases in recent years of countries seeking to influence I the rate of population growth. Such political influences have been either to increase the population (as in 1930s Germany and Japan, and more recently in Russia and Romania) or to decrease it (as in China, with its one-child policy). Factors affecting mortality Some of the highest death rates are found in the LEDCs, particularly in sub- Saharan Africa. The Gambia, Mali, Sierra Leone, Malawi, Uganda and Zambia all have death rates of 20 per 1,000 or more. However, some of the lowest mortality rates are also found in countries at the lower end of the development range, for 110
  4. 4. Core concepts in human geography AS Module 2 example Kuwait (2 per 1,000), Bahrain (3 per 1,000) and Mexico (5 per 1,000). Why does mortality vary? I Infant mortality is a prime indicator of socioeconomic development. It is the most sensitive of the age-specific rates. Sierra Leone has an infant mortality rate of 195 per 1,000 live births. Infant mortality is falling across the world, but there are still wide variations between nations. Areas with high rates of infant mortality have high rates of mortality overall. I Age structure: countries with high percentages of people below the age of 15 have low death rates. Both Kuwait and Bahrain (see above) have populations in which more than 25% are under 15. I Areas with high levels of medical infrastructure have low levels of mortality. I Life expectancy is higher in countries with higher levels of economic development. Poverty, poor nutrition, a lack of clean water and sanitation (all associated with low levels of economic development) increase mortality rates. Table 4.2 MEDCs LEDCs Major causes of Heart disease and strokes Respiratory diseases: influenza, pneumonia, death in MEDCs tuberculosis (collectively 25% of all deaths) and LEDCs Cancers Parasitic diseases: malaria, sleeping sickness (15%) Wars: international (e.g. two World Wars) Wars: civil wars (e.g. Ethiopia, Sudan) Transport-related accidents Natural disasters (e.g. earthquakes) AIDS (greater impact than in MEDCs) Around the world, mortality has fallen steadily because of medical advances. It seems people are more willing to control mortality than they are to control fertility. The demographic transition model The demographic transition model (DTM) describes how the population of a country changes over time (Figure 4.1). It gives changes in birth and death rates, and shows that countries pass through five stages of population change. Figure 4.1 Stage 1 Stage 2 Stage 3 Stage 4 Stage 5 The demographic High High Early Late Low transition model fluctuating expanding expanding fluctuating Decline Birth rate Births and deaths per 1,000 people Total Natural population increase in Natural population decrease in per year population Death rate Low Time 111
  5. 5. 4 Chapter Population dynamics Stage 1 (high fluctuating) A period of high birth rate and high death rate, both of which fluctuate. Population growth is small. Reasons for the high birth rate include: I limited birth control/family planning I high infant mortality rate, which encourages the birth of more children I children are a future source of income I in many cultures, children are a sign of fertility I some religions encourage large families Reasons for the high death rate include: I high incidence of disease I poor nutrition and famine I poor levels of hygiene I underdeveloped and inadequate health facilities Stage 2 (early expanding) A period of high birth rate but falling death rate. The population begins to expand rapidly. Reasons for the falling death rate include: I improved public health I better nutrition I lower child mortality I improved medical provision Stage 3 (late expanding) A period of falling birth rate and continuing falling death rate. Population growth slows down. Reasons for the falling birth rate include: I changing socioeconomic conditions, greater access to education for women I preferences for smaller families I changing social trends and fashions, and a rise in materialism I increased personal wealth I compulsory schooling, making the rearing of children more expensive I lower infant mortality rate I the availability of family planning systems, which are often supported by governments. Stage 4 (low fluctuating) A period of low birth rate and low death rate, both of which fluctuate. Population growth is small and fertility continues to fall. There are significant changes in personal lifestyles. There are more women in the workforce, with many people having high personal incomes and more leisure interests. Stage 5 (decline) A later period, during which the death rate slightly exceeds the birth rate. This causes population decline. This stage has only been recognised in recent years and only in some western European countries. Reasons for the low birth rate in this stage include: I a rise in individualism, linked to the emancipation of women in the labour market I greater financial independence of women I concern about the impact of increased population numbers on the resources for future generations I an increase in non-traditional lifestyles, such as same-sex relationships I a rise in the concept of childlessness 112
  6. 6. Core concepts in human geography AS Module 2 Case study Demographic change in the UK 1833 Factories Stage 1 Stage 2 Stage 3 Stage 4 ban child labour 1874 Compulsory Birth rate 1834 Poor Law registration Amendment Act Death rate 1801 1876 Rev. Bradlaugh First census 40 Rates per thousand per annum spreads birth-control 1836 Voluntary information: size of registration of families controlled births and deaths Voluntary 1798 Jenner 35 hospitals discovers founded vaccination 1868 Local authorities against Cheap gin First condemn unfit buildings smallpox 30 drinking World 1874 War: 1848 Public Health Act Dispensary Compulsory drop in (established boards of health movement begins. registration births for pure water supply and Postwar 25 Outpatients drainage) baby boom 1875 Public Health Act: treated at hospitals (establishes local 1921 Short period sanitary district) Local of natural 20 Rise in child deaths in large councils decrease towns due to food shortage, treat TB bad housing and poor sanitation 15 Source: Guinness, P. and Nagle, G. Advanced 1911 National Insurance Geography, Hodder & Stoughton. 0 1700 1720 1740 1760 1780 1800 1820 1840 1860 1880 1900 1920 1940 1960 1980 2000 Year Figure 4.2 Demographic transition model in the UK, 1700–2000 During medieval times, both birth and death rates in incidence of diarrhoeal diseases and typhoid fall the UK were high, at around 35 per 1,000. Generally, rapidly. Greater disposable income from factory the birth rate was a little higher than the death rate, wages led to more food being consumed by the resulting in a slow rate of natural increase. working class and to a wider range of food products being demanded. At the same time improvements in The birth rate tended to remain at a relatively stable farming practices and transport systems allowed this level, but the death rate varied considerably. In demand to be met. Better nutrition played a signifi- 1348–49, the epidemic of bubonic plague, called the cant role in the decline in infant mortality. Black Death, killed one-third of the population. Other plagues followed in the seventeenth century, The combination of better nutrition and the general including the Great Plague of 1665. There was an improvements in health brought about by legislation increase in mortality between 1720 and 1740, which such as the Public Health Acts of 1848 and 1869, is attributed to the availability of cheap gin. This was caused the incidence of common infectious diseases ended by the introduction of a ‘gin tax’ in 1751. such as scarlet fever and tuberculosis to diminish markedly. Public perception of cleanliness was also Falling death rate a major factor. Soap was a well-advertised product The period from the mid-eighteenth century to and the availability of cheaper cotton clothing about 1875 was a time of rapid urbanisation, which (which is easier to wash than woollen clothing) was alerted public officials and enlightened industrialists important. to the urgent need for improvements in public Falling birth rate health. Factory owners soon recognised that an unhealthy workforce had a huge impact on produc- After 1875, the continued decrease in the death rate tivity. The provision of clean, piped water and the was accompanied by a reduction in the birth rate. installation of sewage systems, together with Medical science began to play an important role in improved personal and domestic cleanliness, saw the the control of mortality, with doctors being able to 113
  7. 7. 4 Chapter Population dynamics administer more effective drug treatments. Surgery compulsory. Between 1890 and 1930, the birth rate grew more advanced and anaesthesia became avail- fell from 32 per 1,000 to 17 per 1,000. able. From the early part of the twentieth century, By 1940, the birth rate had fallen again to 14 per increasing attention was paid to maternity and child 1,000, partly due to the uncertainties of war. welfare, and to the health of schoolchildren. There Immediately following the war, birth rates rose for a were further advances in nutrition – for example short while — the postwar baby boom. However by cheap American wheat, and refrigerated meat and 1980, birth rates had again fallen to 14 per 1,000 fruit from Australia and New Zealand began to be and have remained at this level. The introduction of imported. the oral contraceptive pill and the wider use of The decline in fertility began with the celebrated trial condoms have meant that the relationship between of two social reformers, Charles Bradlaugh and Annie desired family size and achieved family size has Besant. They were prosecuted, and later acquitted, remained strong. The rise in the importance of for publishing a book that gave contraceptive females in the employment structure of the UK in advice. The desire for smaller families at this time was the last few decades, particularly in service indus- due to the financial costs of looking after children, tries, has further impacted on birth rates, particularly especially when education to the age of 13 became in the professional classes. The usefulness and application of the DTM The DTM is useful because: I it is universal in concept — it can be applied to all countries in the world I it provides a starting point for the study of demographic change over time I the timescales are flexible I it is easy to understand I it enables comparisons to be made demographically between countries Limitations of the DTM are that: I the original model did not include the fifth stage I it is eurocentric and assumes that all countries in the world will follow the European sequence of socioeconomic changes I it does not include the role of governments I it does not include the impact of migration In the 1960s, people noted that many countries of the more economically developed world (MEDW) had gone through the first four stages of the model. They also noted that countries of the less economically developed world (LEDW) seemed to be in a situation similar to stage 2 — their death rates had fallen but their birth rates were still very high, leading to rapid population growth. In the UK, as noted in the case study (page 113), stage 2 took over 100 years to complete. This was because social, economic and technological changes were introduced gradually and the death rate fell slowly. In many parts of the LEDW, the death rate has fallen much more rapidly because these changes, partic- ularly the introduction of Western medical practices, have taken place more quickly. The birth rate, however, has stayed high and so the population has increased rapidly. 114
  8. 8. Core concepts in human geography AS Module 2 It was hoped that such countries would move into stage 3, as failure to do so could result in population exceeding available resources. This was one of the reasons that China introduced the one-child policy, forcing its population into stage 3. Malaysia also reduced its birth rate by introducing a government- sponsored nationwide family-planning programme. The outcomes of that programme, begun in the 1960s, are shown in Table 4.3. Table 4.3 Total population Average population Population change Date Birth rate Death rate (millions) change (% per year) in Malaysia, 1960 47 20 8 1960–2000 1970 44 16 10 2.8 (1960–70) 1980 44 13 14 3.1 (1970–80) 1990 37 11 18 2.6 (1980–90) 2000 27 5 23 2.3 (1990–2000) In summary, there are a number of important differences in the way that countries of the LEDW and MEDW have undergone population change. In comparison with countries now in the MEDW, those in the LEDW: I had generally higher birth rates in stages 1 and 2 I had a much steeper fall in death rate (and for different reasons) I had in some cases much larger base populations, so the impact of high population growth in stage 2 and the early part of stage 3 has been far greater I in those countries in stage 3, the fall in fertility has been steeper I had a weaker relationship between population change and economic development — governments have played a more decisive role in population management Case study Population change in Thailand The birth rate in Thailand has fallen rapidly, partly as a result of the National Family Planning 70 Population (millions) Birth/death rates per 1,000 Total population Programme, which has been run by the Ministry 60 Birth rate of Health since 1970. This has included: Death rate 50 50 I public information programmes, to ensure that everyone knows about contraceptive 40 40 methods 30 30 I advertising the benefits of the two-child family 20 20 I establishing health centres throughout the country, to provide mainly free contraception 10 10 I training paramedics and midwives, who are 0 0 mainly from the local villages and are, there- 1930 1940 1950 1960 1970 1980 1990 2000 fore, known and trusted. They provide health- Year care for mothers and babies, so more babies Figure 4.3 are surviving Population change in Thailand, 1930–2000 115
  9. 9. 4 Chapter Population dynamics Migration The relationship between the numbers of births and deaths (natural change) is not the only factor in population change. The balance between immigration and emigration (net migration) must also be taken into account. The relative contri- butions of natural change and net migration can vary both within a particular country and between countries. Migration can be categorised using a number of criteria (Table 4.4). Table 4.4 Criterion Type of migration Types of migration Scale International, regional, local Direction Rural–urban, urban–rural, urban–urban, MEDW to LEDW, LEDW to MEDW Distance Long distance, short distance, regional Decision making Forced (e.g. from hazards or for political safety — refugees) Voluntary (e.g. for work, retirement or family reasons) Cause of movement Economic, social, environmental Migration tends to be subject to distance-decay — the number of migrants declines as the distance between origin and destination increases. Refugees tend to move only short distances; economic migrants travel greater distances. Theories of migration The push–pull model Many factors influence the decision to migrate. They can be categorised into push factors and pull factors: I Push factors are the negative aspects of the current place of residence. They include lack of employment, low wages, poor housing, poor educational opportunities, political persecution, natural hazards, starvation and war. I Pull factors are the attractions of the destination. They are often the inverse of the push factors: better employment and educational opportunities, better housing and social services (health services), higher wages, family integration and political stability. If the perceived push or pull factors are strong enough to overcome the forces of inertia (cost of moving, disruption of social networks), then migration will occur. One of the most important factors in any migration is the perception of the individual concerned. Perception is the subjective view that a person has of the environment, which is derived from personal experience, the experience of others and the media. Through perception, a potential migrant builds up a mental image of the destination. This mental image may be partial and distorted but will be the basis of the decision by the migrant. The mental images that migrants have, therefore, often fail to accord with reality. This is one reason why for each migration there is often a movement in the opposite direction — disillusioned migrants returning to their place of origin. 116
  10. 10. Core concepts in human geography AS Module 2 Lee’s model + + – Lee suggested that people: + – – + I assess and perceive the destination – – + + Intervening obstacles – I assess conditions where they are + + + I look at obstacles between the two, such as + + Positive factors + –– distance and cost – Negative factors Destination Origin I consider personal circumstances Neutral factors The decision to migrate depends upon the number of intervening obstacles Figure 4.4 Lee’s model of (negative factors) between origin and destination, such as mountains or inter- migration national boundaries and on the balance between positive and negative factors in the origin and the destination. Causes of migration Migration is more volatile than fertility and mortality. It is affected by changing physical, economic, social, cultural and political circumstances. However, the wish to migrate may not be fulfilled if the constraints are too great. The desire to move within a country is generally inhibited only by economic and social factors. The desire to move to another country is usually constrained by political factors, such as immigration laws. Table 4.5 gives examples of some major causes of migration. It classifies such Table 4.5 movements in terms of their origin and destination; and whether the movement Examples of is voluntary or forced. migration Forced Voluntary Movement The ‘brain drain’ of doctors and scientists from Between the UK and Germany to the USA MEDCs Repatriation of East Germans into the new The movement of East European workers into the unified Germany after 1989 UK following the expansion of the EU in 2004 Movement of large numbers of Movement of Mexicans into the USA to work From LEDCs refugees and asylum seekers in many as casual employees in the farming communities to MEDCs parts of the world of California Movement of evacuees from Montserrat following the volcanic explosions in 1996 Movement of aid workers from EU countries to From MEDCs the Sudan and Ethiopia to LEDCs Movement of Tutsi and Hutu peoples from The movement of migrant labour from Pakistan Between Rwanda to the Democratic Republic of and Bangladesh to the oil-rich states of the LEDCs Congo, because of the fear of genocide Persian Gulf The changing nature of international migration Patterns of international migration have been changing since the late 1980s. There have been increases in: I attempts at illegal, economically motivated migration as a response to legal restrictions 117
  11. 11. 4 Chapter Population dynamics those seeking asylum (see below) Key terms I migration between MEDCs, particularly between countries I Forced migration The migrant within the EU where restrictions have been removed to has to migrate, because of the allow the free movement of labour circumstances. short-term migration, as countries increasingly place I International migration The UN limits on work permits. It is now common for MEDCs defines international migration as (e.g. the UK and USA) to limit the length of work permits, the movement of people across even for qualified migrants coming from other MEDCs national frontiers, for a minimum movement of migrants between LEDCs, particularly I of 1 year. to those where rapid economic development is taking Migration A permanent or semi- place, for example the countries of the Persian Gulf permanent change of residence of and the Asian economic growth areas of Singapore and an individual or group of people. Indonesia Net migration The difference There has been a decline in: between the numbers of in-migrants I legal, life-long migration, particularly from LEDCs to and out-migrants in an area. When in-migrants exceed out-migrants, MEDCs. Host countries provide fewer opportunities for there is net migrational gain. When migrants because the number of available low-skilled jobs out-migrants exceed in-migrants has dropped. Many host countries have also tightened there is net migrational loss. entry requirements, and introduced more rigorous Rural–urban and urban–rural monitoring at the point of entry migration In LEDCs, the net I the number of people who migrate for life. Many newer migrational gain of urban areas at the migrants want to return home at some point. For example, expense of rural areas results in a common feature of villages in Italy, Portugal and Greece urbanisation. In MEDCs, movements is new housing built by returnees from urban areas to rural areas have I the number of people migrating with the purpose of led to counter-urbanisation. reuniting family members, as the amount of long-term Voluntary migration The migrant family separation reduces and many migrants eventually makes the decision to migrate. return home Refugees Refugees are defined by the UN as persons unable or unwilling to return to their homeland for fear of persecution, based on reasons of race, religion, ethnicity or political opinion, or those who have been displaced forcibly by other factors. By 2002, the UN estimated that there were over 20 million refugees in the world. Many refugee movements are large-volume, non-selective and over short distances. They are often caused by war. Such migrations are often temporary — when the cause of the migration ends, the refugees return to their former homes. At the end of the twentieth century and the beginning of the twenty-first, major movements have included: I 2 million from Ethiopia, Sudan and Somalia, as a result of famine and civil war I 6 million from Mozambique, as a result of famine, civil war and flooding I 1 million Kurds from northern Iraq fleeing oppression I 1 million Afghans into neighbouring Pakistan, fleeing civil strife and war I 100,000 Tamils fleeing oppression and civil war in Sri Lanka I 7,000 residents of Montserrat fleeing a volcanic eruption in the Soufrière Hills 118
  12. 12. Core concepts in human geography AS Module 2 Asylum seekers One definition of asylum is ‘the formal application by a refugee to reside in a country when they arrive in that country’. The numbers seeking asylum have increased steadily in recent years as countries seek to curtail immigration. The prominence of asylum seeking has increased for the following reasons: I pressure to migrate from the poorest states is increasing because of economic decline and political instability I improved communications enable people to learn more about potential destinations I in real terms, the cost of transport has declined I more gangs of traffickers are preying on would-be migrants and offering a passage to a new life It can be difficult to distinguish between those fleeing from threats to their life and liberty and those seeking to escape poverty and improve their quality of life. Effects of migration Impact on population structure Migration affects the population structure (page 125) of both the area of origin and the area of destination. Impacts on the area of origin include: I the younger adult age groups (20–34) migrate, leaving behind an older population I males are more likely to migrate, causing an indentation on that side of the population pyramid I birth rates will fall and death rates will rise Barra, an island in the Outer Hebrides (Scotland), has long experienced depopu- lation as a result of the poor economic prospects in this remote and isolated location (Figure 4.5). Figure 4.5 Impacts on the area of destination: Population pyramid I the proportion of the younger adult age for Barra, Scotland groups (20–34) increase Males 80+ Females I males are more likely to migrate, causing 75–79 70–74 an expansion on that side of the pyramid 65–69 I birth rates rise and death rates fall 60–64 55–59 Dar-es-Salaam, the capital city of Tanzania, is 50–54 a thriving international port and has long 45–49 been a magnet for those seeking employment 40–44 35–39 in that area of east Africa (Figure 4.6). 30–34 25–29 Social, economic, environmental 20–24 and cultural effects 15–19 10–14 Migration affects both the area of origin and 5–9 the area of destination. The effects of migra- 0–4 tion are social, economic, environmental and 6 3 0 0 3 6 cultural (Tables 4.6 and 4.7). Population (%) 119
  13. 13. 4 Chapter Population dynamics Figure 4.6 Males Females 80+ Population pyramid 75–79 for Dar-es-Salaam, 70–74 Tanzania 65–69 60–64 55–59 50–54 45–49 40–44 35–39 30–34 25–29 20–24 15–19 10–14 5–9 0–4 9 6 3 0 0 3 6 9 Population (%) Table 4.6 Impact In the area of origin The effects of Social Marriage rates fall migration on the area of origin Family structures can break down Economic Those with skills and education leave, causing labour shortages or reduced pressure on resources such as farmland The area benefits from remittances sent back — an economic gain On their return migrants bring back new skills Environmental Farming declines and land is abandoned Cultural Departure of males and young families causes a loss of cultural leadership and tradition Table 4.7 Impact In the area of destination The effects of Social Marriage rates rise migration on the Economic There is a labour surplus; those with skills and education fuel a new area of destination drive to the economy; there is greater take-up of menial jobs Remittances are sent back to the area of origin — an economic loss On returning to the area of origin, migrants export the skills they have learned — a kind of reverse ‘brain drain’ Environmental Pressure on resources Temporary housing and shanty towns in LEDCs; pollution; poor public health Cultural Arrival of a new group of people can cause friction, especially if their cultural identity is retained Attitudes of local people to new migrants may be both negative and positive Social tension may increase New food, clothes, music etc. are introduced into the area 120
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×