Activity 3.1- Human Populations
Oceania-More Developed
Oceania is home to roughly 46 million people in mid-2024, and the population is expected to grow to 53 million by 2035 and 61 million by 2050. Population growth comes from both natural increase, more births than deaths, and migration. The rate of natural increase is about 0.8% per year, with around 15 births and 7 deaths per 1,000 people. Migration plays a significant role, particularly in Australia and New Zealand, contributing to an overall growth rate of roughly 2.2% per year. The region shows a clear divide between the more developed countries and the smaller Pacific islands. Australia and New Zealand have older populations, low fertility (about 1.5–1.6 children per woman), and high life expectancy (over 80 years). On the other hand, Pacific Island nations like Papua New Guinea, Samoa, and Vanuatu have high fertility rates (3–4 children per woman), youthful populations, and lower life expectancy (mid-60s to low 70s). This means Oceania combines features of both developed and developing regions. Urbanization also varies a lot across the region. About 70% of Oceania’s population lives in cities, but this is mainly in Australia and New Zealand, where urbanization is above 80%. Many island nations are more rural, with less than half their populations in urban areas. Economically, Oceania shows significant differences. The average income is around $47,800 per person, but that hides a lot of inequality. Australia and New Zealand are wealthy, while countries like Papua New Guinea and Vanuatu have much lower incomes. Fertility, life expectancy, and urbanization patterns all reflect these economic differences. In short, Oceania is a mix of highly developed, aging societies and young, lower-income island nations. This diversity makes the region unique but also presents challenges, especially in terms of population growth, economic development, and migration. While Australia and New Zealand resemble developed countries, many Pacific islands face slower development and higher population growth, creating a complex demographic landscape.
South Asia-Least Developed
South Asia is home to over 2 billion people in 2024, and it’s a region with a lot of diversity when it comes to population and social indicators. It includes countries like Afghanistan, Bangladesh, Bhutan, India, Iran, the Maldives, Nepal, Pakistan, and Sri Lanka. Altogether, the region has a birth rate of 18 per 1,000 people and a death rate of 6 per 1,000, giving a natural population growth of about 1.2%. That means the population is still growing steadily, though the pace isn’t the same everywhere because some countries are having more kids than others. Fertility rates vary widely: Afghanistan has the highest at nearly 5 kids per woman, while Pakistan is at 3.6. Meanwhile, countries like the Maldives, Bhutan, and Iran have much lower fertility rates, around 1.5–1.7 kids per woman. Infant mortality rates also differ: Afghanistan and Pakistan have the highest numbers, while Sri Lanka and the Maldives have very low rates, showing better survival for babies. Life expectancy reflects similar trends—people in the Maldives and Sri Lanka can expect to live into their 80s. In contrast, in Afghanistan and Pakistan, life expectancy is in the mid to late 60s or early 70s, reflecting differences in living conditions and general development. Most people in South Asia still live in rural areas, with the regional urban population averaging about 27%. Pakistan and Nepal are a little more urbanized, while Afghanistan and Bhutan are primarily rural. Economic differences are huge too: Afghanistan’s GNI per person is only about $2,100, while the Maldives is way ahead at over $21,700, showing just how varied the region is economically. Looking ahead, South Asia’s population is expected to keep growing, reaching roughly 2.27 billion by 2035 and 2.48 billion by 2050. That growth, combined with differences in fertility, mortality, and wealth, highlights the challenges the region faces in terms of sustainable development. Overall, South Asia’s demographic picture shows both opportunities and challenges, with some countries doing very well and others still working to catch up.
Compare and contrast Oceania and South Asia:
Comparison to the world:
Citations:
Chapter 2 - Population Ecology and Human Demography
Mutiti, S., Mutiti, C., Manoylov, K., VandeVoort, A., & Bennett, D. (2018). Introduction to environmental science (3rd ed.). Biological Science Open Textbooks. University System of Georgia.


Comments
Post a Comment