Activity 3.1- Human Populations

 Oceania-More Developed



-Birth Rate: 15 per 1000 population
-Death Rate: 7 per 1000 population
-Population Growth Rate: 2.2% per year
-Life expectancy for males and females: 78 years overall (Men: 76, Women: 81)
-Fertility Rate: 2.0
-Gross National Income (GNI)- $47812 

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



-Birth Rate: 18 per 1000 population
-Death Rate: 6 per 1000 population
-Population Growth Rate: 1.2 per year
-Life expectancy for males and females: 73 years overall (Men: 71, Women: 74)
-Fertility Rate: 2.2 
-Gross National Income (GNI)- $9,671

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:

Oceania and South Asia are very different in size and development. South Asia is huge, with over 2 billion people, while Oceania has only 46 million. South Asia’s population is growing faster because countries like Afghanistan and Pakistan have high fertility, while Oceania’s growth is slower and driven mainly by migration. Life expectancy is higher in Oceania, especially in Australia and New Zealand, compared to South Asia, where some countries like Afghanistan have much lower life spans. Economically, Oceania is much richer overall, though small Pacific Islands lag behind, while South Asia has significant differences between countries like the Maldives and Afghanistan. Oceania is also more urbanized and has better access to healthcare, while South Asia is less urban with higher infant mortality. Overall, Oceania reflects a mix of developed nations and small islands, whereas South Asia is essentially developing, young, and growing quickly. Despite their differences, both regions have inequalities within their countries that affect health, income, and quality of life.


Comparison to the world: 

Compared to the rest of the world, Oceania is small in population but relatively wealthy and developed. Countries like Australia and New Zealand have high life expectancy, low fertility, and strong health systems, which are similar to other developed regions like North America and Western Europe. Many Pacific Islands, however, are less developed, which reveals significant internal disparities. South Asia, on the other hand, is huge in population and still essentially developing. Its fertility rates are higher, life expectancy is lower, and income per person is far below the world average, similar to other developing regions in Africa and parts of Southeast Asia.

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. 

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