Millennial climate change in southern Australia during the Last Glacial. Abrupt warming and cooling events were a persistent feature of Earth's most recent climate cycle. Surprisingly, little is known of how these events affected the climate of Australia. This project will produce precisely dated reconstructions of rainfall and temperature trends in southern Australia during these events. These new terrestrial and ocean data will be compared with model simulations to determine how rapidly abrupt ....Millennial climate change in southern Australia during the Last Glacial. Abrupt warming and cooling events were a persistent feature of Earth's most recent climate cycle. Surprisingly, little is known of how these events affected the climate of Australia. This project will produce precisely dated reconstructions of rainfall and temperature trends in southern Australia during these events. These new terrestrial and ocean data will be compared with model simulations to determine how rapidly abrupt climate perturbations in the Northern Hemisphere reached our region, and the processes by which this occurred. The results will advance theory on how abrupt climate change propagates globally and provide a long-awaited climatic context for capstone events in Australia's natural history.Read moreRead less
New insights on the forcing of Quaternary ice-age terminations. This project investigates the period when Earth's climate last experienced a major step change. Using novel techniques, it combines information from an exceptional archive of cave deposits and ocean sediments to precisely determine the timing of ice-age cycles. The results will provide the first robust test of hypotheses proposed to explain these cycles, leading to refinements in the astronomical theory of the ice ages. They will al ....New insights on the forcing of Quaternary ice-age terminations. This project investigates the period when Earth's climate last experienced a major step change. Using novel techniques, it combines information from an exceptional archive of cave deposits and ocean sediments to precisely determine the timing of ice-age cycles. The results will provide the first robust test of hypotheses proposed to explain these cycles, leading to refinements in the astronomical theory of the ice ages. They will also provide an essential reference record of Northern Hemisphere ice-sheet history, which will complement data from forthcoming Antarctic ice cores. Together, this will better contextualise current and projected greenhouse warming.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE210101923
Funder
Australian Research Council
Funding Amount
$411,073.00
Summary
Characteristics and controls of ice sheet loss on centennial timescales. This project aims to unearth the characteristics and controls of Antarctic ice sheet loss on timescales of 100s to 1000s of years. The polar ice sheets are getting smaller at an accelerating rate in response to a warming climate, but modern observations are not yet sufficient to determine whether current ice sheet loss marks the start of irreversible retreat. Through a combination of novel geological approaches and numerica ....Characteristics and controls of ice sheet loss on centennial timescales. This project aims to unearth the characteristics and controls of Antarctic ice sheet loss on timescales of 100s to 1000s of years. The polar ice sheets are getting smaller at an accelerating rate in response to a warming climate, but modern observations are not yet sufficient to determine whether current ice sheet loss marks the start of irreversible retreat. Through a combination of novel geological approaches and numerical ice-flow modelling, this project expects to generate new knowledge on the rates and magnitudes of ice sheet loss, and the processes that will dictate the amount of ice loss in this century and beyond. This work should be beneficial for managing the societal, economic and environmental impacts of future sea-level rise.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE200100890
Funder
Australian Research Council
Funding Amount
$427,082.00
Summary
Rapid climate change, early modern human dispersal, and Neanderthal demise. Why are we the only surviving human species? This project aims to investigate whether seasonal environmental changes associated with rapid climate change events played a role in the expansion of our own species and the demise of Neanderthals between 60,000-30,000 years ago. The project will generate quantitative, sub-seasonal records of past climate variability using novel multi-proxy analyses from key archaeological sit ....Rapid climate change, early modern human dispersal, and Neanderthal demise. Why are we the only surviving human species? This project aims to investigate whether seasonal environmental changes associated with rapid climate change events played a role in the expansion of our own species and the demise of Neanderthals between 60,000-30,000 years ago. The project will generate quantitative, sub-seasonal records of past climate variability using novel multi-proxy analyses from key archaeological sites, offering a framework for understanding early human responses to extreme climate fluctuations. This may inform our strategies for coping with future extreme scenarios. These unparalleled records will also provide data to test and refine climate models, enabling a better understanding of Earth’s climate system. Read moreRead less
Has it always burned so hot? Fuel and fire in southeast Australian forests. Indigenous cultural burning has been raised as a way of mitigating against climate-driven catastrophic bushfires in southeast Australian forests. It is argued that returning an Indigenous style fire regime will keep landscape fuel loads low, thus reducing the frequency and intensity of bushfires and mitigating against large catastrophic bushfires. While based on enormous reservoirs of traditional fire knowledge in Indige ....Has it always burned so hot? Fuel and fire in southeast Australian forests. Indigenous cultural burning has been raised as a way of mitigating against climate-driven catastrophic bushfires in southeast Australian forests. It is argued that returning an Indigenous style fire regime will keep landscape fuel loads low, thus reducing the frequency and intensity of bushfires and mitigating against large catastrophic bushfires. While based on enormous reservoirs of traditional fire knowledge in Indigenous communities, this assertion needs empirical testing within these highly flammable forests. This project aims to empirically test how fuel loads, fuel type, fire frequency and fire intensity have changed over the past 500 years in southeast Australian forests, spanning the period of indigenous to British management.Read moreRead less
Deep-time history of culturally significant lands and waters in Timor-Leste. This project aims to provide a new framework for understanding and managing lands and waters of exceptional biological and cultural value. The project expects to generate the first long-term records of ecological change in Timor-Leste's unique forest and tropical savanna ecosystems, providing novel insights into ancient cultural landscapes threatened by climate change. Expected outcomes include enhanced collaboration be ....Deep-time history of culturally significant lands and waters in Timor-Leste. This project aims to provide a new framework for understanding and managing lands and waters of exceptional biological and cultural value. The project expects to generate the first long-term records of ecological change in Timor-Leste's unique forest and tropical savanna ecosystems, providing novel insights into ancient cultural landscapes threatened by climate change. Expected outcomes include enhanced collaboration between Australia and Timor-Leste and comprehensive data and educational resources relevant to managing climate impacts on livelihoods. This should provide significant benefits to scientific dialogue in the Asia-Pacific region and help support economic opportunities that respect indigenous environmental knowledge.Read moreRead less
Archaeology and natural history. This project aims to provide critical new information on the archaeology and natural history of one of the world’s largest unregulated desert river systems. Mithaka country incorporates the highly significant Channel Country on the eastern edge of Australia's arid centre. Preliminary research has identified more than 70 large site complexes that provide critical insights on how the Mithaka people adapted to this unique environment and took part in Australia's mos ....Archaeology and natural history. This project aims to provide critical new information on the archaeology and natural history of one of the world’s largest unregulated desert river systems. Mithaka country incorporates the highly significant Channel Country on the eastern edge of Australia's arid centre. Preliminary research has identified more than 70 large site complexes that provide critical insights on how the Mithaka people adapted to this unique environment and took part in Australia's most extensive long distance trade systems. The project will study the archaeological landscape, artefacts and an extensive in-situ skeletal record in the context of a detailed palaeoenvironmental study. It will provide a new cultural-environmental history of this landscape and provide the Mithaka with multiple strands of connection to their ancestral land and culture and support their aspirations to create employment through rangers programs, education and cultural tourism.Read moreRead less
Early desert settlement of Arabia following out-of-Africa human dispersals. This project aims to improve our understanding of the nature, timing and climatic context of early human expansion into SW Asia, from a new extensive archaeological complex with associated palaeoenvironmental sequences on the Arabian Peninsula – a strategic out-of-Africa migratory corridor. It will combine innovative approaches in archaeology, geochronology and palaeoenvironmental research to evaluate the environmental a ....Early desert settlement of Arabia following out-of-Africa human dispersals. This project aims to improve our understanding of the nature, timing and climatic context of early human expansion into SW Asia, from a new extensive archaeological complex with associated palaeoenvironmental sequences on the Arabian Peninsula – a strategic out-of-Africa migratory corridor. It will combine innovative approaches in archaeology, geochronology and palaeoenvironmental research to evaluate the environmental and cultural adaptability of early desert settlement, providing critical new insights into globally significant human dispersal debates spanning multiple continents, including Australia. The aim is a fundamental new perspective on long-term human occupation dynamics of deserts and new understanding of regional dispersals.Read moreRead less
Early African woodworking and tool use at the transition to modern humans. Our archaeological excavations and preliminary dating of Amanzi Springs (South Africa) to between 515,000 and 163,000 years ago shows that the site covers a critical time period that led to the origins of our species, Homo sapiens. Amanzi documents, in never before seen resolution, the technological leaps that our ancestors made during this transition. At ~400,000 years ago this includes the oldest evidence for woodworkin ....Early African woodworking and tool use at the transition to modern humans. Our archaeological excavations and preliminary dating of Amanzi Springs (South Africa) to between 515,000 and 163,000 years ago shows that the site covers a critical time period that led to the origins of our species, Homo sapiens. Amanzi documents, in never before seen resolution, the technological leaps that our ancestors made during this transition. At ~400,000 years ago this includes the oldest evidence for woodworking and tool use and >163,000 years ago the oldest heat treatment of rock to make stone tools. The organic preservation at the site means that we can reconstruct changing environment, linked to sea level changes and spring activity, for this period in the evolution of our ancestors at a level of detail not previously possibleRead moreRead less
ARC Centre of Excellence for Indigenous and Environmental Histories and Futures. ARC Centre of Excellence for Indigenous and Environmental Histories and Futures. The proposed Centre aims to generate a new direction in knowledge creation based on Aboriginal- and Torres Strait Islander-led approaches to managing Land and Sea Country. The Centre expects to make a legacy contribution by developing complementary Indigenous and Western knowledge frameworks for modelling environmental, cultural, and hi ....ARC Centre of Excellence for Indigenous and Environmental Histories and Futures. ARC Centre of Excellence for Indigenous and Environmental Histories and Futures. The proposed Centre aims to generate a new direction in knowledge creation based on Aboriginal- and Torres Strait Islander-led approaches to managing Land and Sea Country. The Centre expects to make a legacy contribution by developing complementary Indigenous and Western knowledge frameworks for modelling environmental, cultural, and historical change in Australia over the last millennium and into the near future. Expected outcomes focus on sustainable Indigenous land and sea management planning for future decades. Benefits include improved forecasting of the trajectory of environmental change, an increase in the capacity of Indigenous research, creation of a pipeline for Indigenous students into research, and evidence-based policy-making.Read moreRead less