The loss of an indigenous constructed landscape following British invasion of Australia: An insight into the deep human imprint on the Australian landscape

Indigenous people play an integral role in shaping natural environments, and the disruption to Indigenous land management practices has profound effects on the biosphere. Here, we use pollen, charcoal and dendrochronological analyses to demonstrate that the Australian landscape at the time of British invasion in the 18th century was a heavily constructed one-the product of millennia of active maintenance by Aboriginal Australians. Focusing on the Surrey Hills, Tasmania, our results reveal how the removal of Indigenous burning regimes following British invasion instigated a process of ecological succession and the encroachment of cool temperate rainforest (i.e. later-stage vegetation communities) into grasslands of conservation significance. This research provides empirical evidence to challenge the long-standing portrayal of Indigenous Australians as low-impact 'hunter-gatherers' and highlights the relevance and critical value of Indigenous fire management in this era of heightened bushfire risk and biodiversity loss.

Automated summary

The study demonstrates how the Australian landscape was heavily influenced by Indigenous land management practices prior to British invasion in the 18th century, and how the disruption of these practices led to ecological succession and encroachment of cool temperate rainforest into important grasslands. It challenges the traditional portrayal of Indigenous Australians as low-impact 'hunter-gatherers' and emphasizes the importance of Indigenous fire management in the face of increased bushfire risk and biodiversity loss.