Lexi Webster
Australia is highly susceptible to the effects of climate change due to its existing warm climate, high annual rainfall variability, and extensive arid and semi-arid areas. Climate change is expected to have a significant impact on Australia's coastal communities, where a large portion of the population resides, and a rise in sea levels could lead to the displacement of human populations. Additionally, the country's unique ecosystems, such as the Great Barrier Reef, and its agriculture and public health are also at risk. Indigenous Australians, particularly Aboriginal and Torres Strait Islander communities in the coastal north, are especially vulnerable to the impacts of climate change due to existing socioeconomic disadvantages and their reliance on traditional land.
| Characteristics | Values |
|---|---|
| Climate change impact on Australia's population distribution | The population is highly concentrated in coastal areas that are at risk from rising sea levels, with Queensland being the state most at risk. |
| Climate change impact on Indigenous Australians | Indigenous Australians are disproportionately affected by climate change due to existing socio-economic disadvantages and their reliance on traditional land for food, culture, and health. They experience higher rates of climate-sensitive health conditions. |
| Population concentration in coastal areas | 80% of Australians are concerned about the impact of climate change on crop production and food supply due to droughts and flooding. |
| Impact on water supply | Existing pressures on water supply will be exacerbated by climate change, with Australia already being the driest inhabited continent. |
| Impact on economy | Climate change is expected to have negative economic ramifications, with the energy sector being the biggest greenhouse gas emitter. |
| Impact on ecosystems | Australia's unique ecosystems, such as the Great Barrier Reef, are at risk due to rising sea temperatures and erosion. |
| Health impacts | Climate change will exacerbate health issues, especially for vulnerable communities, with potential impacts on cultural practices and well-being. |
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What You'll Learn
Climate change and population displacement
Australia is highly susceptible to the effects of climate change due to its existing warm climate, high annual rainfall variability, and extensive arid and semi-arid areas. Climate change is expected to have a significant impact on Australia's environment, ecosystems, economy, agriculture, and public health.
One of the key concerns related to climate change in Australia is the potential displacement of human populations, particularly in coastal areas. Australia's population is highly concentrated in these low-lying regions, which are vulnerable to rising sea levels, coastal erosion, and increased flooding due to higher storm surges and wind speeds. Queensland, known for its valuable beachfront housing, is identified as the state most at risk. A projected 1-metre rise in sea level within the next 30 to 60 years would have massive implications for property and economic systems, as well as population displacement throughout the continent.
Indigenous Australians, particularly Aboriginal and Torres Strait Islander communities in the coastal north, are among the most vulnerable to the impacts of climate change. They constitute 30% of the population in these regions and face socio-economic disadvantages linked to colonial and post-colonial marginalisation. These communities rely on traditional land for food, culture, and health, and are disproportionately exposed to climate extremes such as heat, rainfall, drought, and severe cyclones during the cyclone season. Climate change may also adversely affect their cultural practices and exacerbate existing health disparities.
Climate change is also expected to exacerbate existing pressures on Australia's water supply and increase the frequency and intensity of bushfires. The combination of high temperatures, drought, and bushfires has significant impacts on wildlife, flora, and livelihoods in Australia. These factors influence population distribution as communities seek safer and more sustainable environments.
While climate change may not trigger large-scale migration movements into Australia, it is important to recognise that those adversely affected within the country often lack the resources to migrate over large distances. Instead, they may adapt in situ or move to nearby places, leading to internal population redistribution.
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Impact on Indigenous Australians
Australia's Indigenous communities are particularly vulnerable to the impacts of climate change. Aboriginal and Torres Strait Islander communities located in the coastal north are the most disadvantaged due to social and economic issues and their reliance on traditional land for food, culture, and health. This has raised the question for many community members: "Should we stay or move away?".
Indigenous Australians have a high level of traditional knowledge about climate change, and their knowledge systems are interconnected with the environment. However, their exposure to climate change impacts is exacerbated by existing socioeconomic disadvantages linked to colonial and post-colonial marginalization. Aboriginal populations are disproportionately exposed to climate extremes in heat, rainfall, and drought, and this exposure is predicted to increase with climate change.
The health and well-being of Indigenous Australians are also at risk. They currently experience higher rates of climate-sensitive health conditions, and climate change may adversely affect their cultural practices. Unbearable living conditions due to heat and poor water quality and supply will force Indigenous people to leave their traditional lands, harming their connection to their homelands and culture. Additionally, climate change can limit their access to healthy bush foods and disconnect them from their traditional lands, further impacting their health and well-being.
To adapt to these challenges, Indigenous communities can contribute their traditional land management techniques and knowledge systems to disaster planning and recovery. This includes practices such as cool burning and managing feral animals to reduce the impact on the environment. However, there has been a lack of Indigenous representation in government committees involved in decision-making, planning, and implementation of disaster risk management.
The impacts of climate change on Indigenous Australians are not just practical but also cultural and spiritual. As Djungan Neal from the Djungan people shared, even as places on their traditional lands go underwater, these places will still hold cultural significance for the community.
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Health consequences
Climate change has a range of impacts on human health in Australia. The World Health Organization has described climate change as the biggest threat to health in the 21st century. The health and well-being of Australians have been significantly affected by climate change and extreme weather events.
Infectious Diseases
Climate change has led to an increase in infectious diseases in Australia. Warmer temperatures and changing rainfall patterns increase the risk of food-borne infections such as gastroenteritis (caused by pathogens like Campylobacter, Salmonella, and E. coli) and vector-borne diseases (malaria, COVID-19, and Ross River Virus). Climate change affects pathogen development, increases vector growth rates, and shortens the extrinsic incubation period, leading to more food-, water-, and vector-borne disease cases.
Cardiovascular and Respiratory Issues
Increasing temperatures and more frequent heatwaves can worsen symptoms of heart and lung disease. Warmer temperatures also contribute to higher air pollution levels, particularly in cities due to the "heat island effect," which further exacerbates cardiovascular and respiratory issues.
Mental Health
Extreme weather events such as floods, droughts, and bushfires can lead to psychological distress due to trauma, illness, loss of loved ones, destruction of property, displacement, and disruption of communities. Climate change may also negatively impact the mental health of Western Australians, especially those who are socially disadvantaged, individuals in remote regions, and First Nations peoples.
Bushfire Risks
Bushfires, also known as wildfires, pose significant health risks to Australians, including burns, injuries, mental health issues, and death. Exposure to bushfire smoke can cause eye irritation, corneal abrasions, cardiorespiratory mortality and morbidity, and adverse birth outcomes. Elderly people, children, pregnant women, outdoor workers, and those with pre-existing cardiorespiratory conditions are particularly vulnerable to the health risks associated with bushfires.
Other Impacts
Climate change can also lead to malnutrition, forced displacement, and increased emergency room visits, hospitalizations, and deaths due to more frequent and intense weather events. Additionally, vulnerable groups, including Indigenous communities, may experience worsened health inequities due to climate change.
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Economic impacts
Australia is highly vulnerable to the effects of climate change due to its extensive arid and semi-arid areas, already warm climate, and high annual rainfall variability. The country's high fire risk, unique ecosystems, and concentration of population, commerce, and industry in coastal areas further exacerbate its susceptibility to climate change.
The economic impacts of climate change in Australia are significant and wide-ranging. Here are some key ways in which climate change affects Australia's economy:
Property Loss and Damage
Climate change-driven disasters such as bushfires, droughts, cyclones, and flooding cause physical damage to properties and infrastructure. These events also lead to economic disruption, loss of productivity, and increased health costs. According to Munich Re research, these disasters resulted in global economic losses of A$272 billion in 2020, with Australia's share estimated at A$129 billion per year.
Agricultural Sector
Australia's agricultural sector is particularly vulnerable to climate change. Extreme events like droughts, heatwaves, and floods negatively impact agriculture and food production. By 2050, it is projected that extreme events related to climate change will halve the agricultural output of the Murray-Darling Basin, which currently accounts for 50% of Australia's irrigated agricultural output by value. Additionally, rising temperatures and changing rainfall patterns will affect crop yields and the types of crops grown in certain regions.
Tourism
Tourism in Australia is also at risk due to climate change. Rising sea levels and increased frequency and severity of natural disasters threaten the nation's sandy coastline and top tourist attractions. The impact of climate change on tourism can result in significant economic losses for the country.
Trade and Export
Australia's slow progress in cutting greenhouse gas emissions has put it at risk of carbon border tariffs from its trading partners. If key export markets like South Korea, China, and the G7 follow the European Union in introducing Carbon Border Adjustment Mechanisms (CBAMs), Queensland and New South Wales could face significant economic losses and job losses.
Financial System
Climate change poses risks to Australia's financial system, including increased insurance premiums due to the higher risk of natural disasters. Additionally, properties in areas vulnerable to climate impacts, such as bushfires, flooding, or sea-level rise, may become non-insurable, forcing property owners to bear the risk or relocate. Banks and lenders are also exposed to financial risks if the collateral they lend against decreases in value due to climate change.
Overall, climate change has far-reaching economic implications for Australia, affecting various sectors and impacting productivity, infrastructure, trade, and financial stability. Addressing climate change and transitioning to low-emissions industries are crucial for mitigating these economic impacts and seizing new economic opportunities.
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Australia's contribution to climate change
Australia is one of the world's biggest per capita greenhouse gas emitters, and its climate change policies have been criticised as inadequate. The country is highly reliant on coal and other fossil fuels, and it is among the world's largest exporters of coal, natural gas, uranium, and iron ore.
In 2020, the Australian government calculated that the country's net emissions for the 12-month period ending in September were 510.10 million tonnes of CO2-equivalent. The electricity sector was responsible for 33.4% of these emissions, followed by stationary energy at 20.0%, transport at 17.6%, agriculture at 14.1%, fugitive emissions at 10.0%, industrial processes at 5.9%, and waste at 2.6%.
Australia has set a target of reducing its emissions by 26-28% by 2030 compared to 2005 levels, as part of the Paris Climate Agreement. However, the United Nations (UN) has reported that Australia is not on track to meet this target, and the country has been criticised for its lack of commitment to reducing emissions and addressing climate change.
The Climate Change Performance Index ranked Australia last out of 57 countries responsible for over 90% of greenhouse gas emissions, citing its absence from a UN climate summit and withdrawal from an international fund to tackle climate change. Despite these criticisms, the Australian government maintains that it is on course to meet its 2030 commitments and has defended its approach to emission reduction.
While Australia's share of global emissions is relatively small, at around 1.5%, the country's actions and influence on the global response to climate change are still significant.
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Frequently asked questions
Climate change is expected to disproportionately affect Australia's coastal communities, where a large percentage of the population, commerce, and industry are concentrated. A rise in sea levels will result in flooding and beach erosion, which will have a significant impact on property and the economy. Queensland is the state that is most at risk.
Indigenous Australians are more vulnerable to the impacts of climate change due to existing socioeconomic disadvantages linked to colonial and post-colonial marginalization. Aboriginal and Torres Strait Islander communities located in the coastal north are the most disadvantaged due to social and economic issues and their reliance on traditional land for food, culture, and health. Climate change may also adversely affect their cultural practices.
Climate change is expected to exacerbate existing health issues in Australia, particularly for Aboriginal populations who experience higher rates of climate-sensitive health conditions. Aboriginal populations are also disproportionately exposed to climate extremes in heat, rainfall, and drought.
