How the First Nations Peoples of Australia adapted to an ever-changing environment
Long before the arrival of European settlers, First Nations Australians had lived peacefully with the land for tens of thousands of years.
Their close connection to the environment allowed them to adjust and respond to various environmental changes, which had helped them survive and had kept their unique cultures alive.
Rising sea levels and lost land bridges
One of the major environmental changes First Nations Australians faced was the rise in sea levels that had occurred between 18,000 and 7,000 years ago.
As the ice caps melted and waters rose, large areas of land that had once been dry had been covered by water.
Rising waters had covered the land bridge that connected mainland Australia to what is now Tasmania.
In the same way, the Torres Strait Islands formed from land that had once been a continuous land bridge between Papua New Guinea and Australia.
These changes separated communities across different land masses, and new local groups had formed that developed their own local traditions.
Still, the memories of these events had not been forgotten. Through oral traditions, stories of these changes had been passed down from generation to generation in traditional art forms that included the Dreamtime myths.
Adapting to arid landscapes
Another challenge First Nations Australians faced was that some areas had become drier.
Places like Lake Mungo had once held water, which later disappeared, and the people did not abandon these areas.
Meanwhile, archaeological evidence suggests that people had stayed in regions like the Willandra Lakes at certain times of the year.
This meant that they returned to it when water had been available, then they sought other regions that had water sources during drier times of the year.
The megafauna of Australia
During the Pleistocene epoch, Australia had been home to a group of large animals called megafauna.
Some well-known examples included the Diprotodon, which was a very large herbivore that resembled a giant wombat and which was the largest marsupial ever to have lived.
Other examples included the Thylacoleo, which people later called the 'marsupial lion' and which was a meat-eating animal with powerful jaws and sharp claws.
People also encountered the Genyornis, which was a large flightless bird, and the giant kangaroo Procoptodon, which grew taller than modern-day humans.
Another animal was the Megalania, which was a very large monitor lizard that was one of the largest lizards that lived on land that scientists know about.
Creatures like these were much larger than the animals that we see today and roamed the land.
As a result, First Nations Australians had to develop strategies that guided the hunt in a way that provided them with a source of food, but also did not kill off the animals, since they relied on them, which was vital for survival.
The presence of these large animals had required careful planning and understanding of the environment to ensure that communities could live well alongside these giants.
By around 40,000 years ago, these creatures and many others had gone extinct.
This had been due to human hunting and ongoing climate changes that had reduced the habitat which these animals needed to survive.
Overall, the history of First Nations Australians is a story of strength that came from their ability to adjust to change and from a lasting connection to the land.
Their detailed understanding of the environment and their commitment to a life that respected it offer lessons for all of us today.
