Reconstructing changes in atmospheric circulation over the mid-latitudes of the Southern Hemisphere during the past 3000 years. The climate of the mid-latitudes of the southern hemisphere is of global significance and yet past changes have proved difficult to reconstruct due to the dearth of records. Working across the Southern Ocean region using tree rings, lake sediments and ice cores, the project will produce the first comprehensive reconstruction spanning the last 3000 years.
First use of the gravity field and steady-state ocean circulation explorer for earth sciences in Oceania and Antarctica. The research seeks to improve satellite measurements of earth's gravitational field over the Australian region, Oceania and Antarctica. These data will be used to create a new reference surface for accurate mapping of earth's relief, geographic landmarks, sea level change as well as the currents of the encircling oceans.
Behavioural resilience to climatic variability. Despite Australian biota being adapted to high natural climate variability, modern climate change is leading to population collapses and shifts into novel ecosystems. This Project, which studies a unique native mammal in the Pilbara, aims to uncover whether changes in behaviour are effective for dealing with environmental extremes and unpredictable climatic conditions. It will integrate laboratory- and field-based investigations to examine behaviou ....Behavioural resilience to climatic variability. Despite Australian biota being adapted to high natural climate variability, modern climate change is leading to population collapses and shifts into novel ecosystems. This Project, which studies a unique native mammal in the Pilbara, aims to uncover whether changes in behaviour are effective for dealing with environmental extremes and unpredictable climatic conditions. It will integrate laboratory- and field-based investigations to examine behavioural responses to climatic variability and establish how these responses influence individual fitness and future population resilience. This research will advance knowledge on climate-driven behavioural adaptation and improve understanding of how species will cope with Australia’s changing climate.Read moreRead less
Ancient Ecology: Changes in penguin diet over ~30,000 years in Antarctica. This project proposes the first direct study of ancient ecology using a combination of second-generation DNA sequencing and targeted gene recovery. The food web of the Antarctic Ocean is a classic textbook example of energy and nutrient cycling in the marine environment. Although a great deal is known about the current status of this food web, understanding how this complex set of predator / prey relationships have change ....Ancient Ecology: Changes in penguin diet over ~30,000 years in Antarctica. This project proposes the first direct study of ancient ecology using a combination of second-generation DNA sequencing and targeted gene recovery. The food web of the Antarctic Ocean is a classic textbook example of energy and nutrient cycling in the marine environment. Although a great deal is known about the current status of this food web, understanding how this complex set of predator / prey relationships have changed over long periods of time is vital to understanding the nature of the system itself. The project intends to track changes in the diet of Adélie penguins from serially preserved ancient fecal (guano) remains dating back approximately 30,000 years. These remains are known to contain microscopic remnants of penguin prey.Read moreRead less
Why ocean deserts matter: Phytoplankton productivity in oligotrophic waters. This project aims to revisit the role of ocean deserts in the global ocean primary production. Because of their extent, these areas are paradoxically responsible for about half the global ocean carbon fixation. The project will use a unique combination of optical and biogeochemical data from a research voyage in the Indian Ocean, biogeochemical models and satellite observations, expecting to generate new knowledge on th ....Why ocean deserts matter: Phytoplankton productivity in oligotrophic waters. This project aims to revisit the role of ocean deserts in the global ocean primary production. Because of their extent, these areas are paradoxically responsible for about half the global ocean carbon fixation. The project will use a unique combination of optical and biogeochemical data from a research voyage in the Indian Ocean, biogeochemical models and satellite observations, expecting to generate new knowledge on the link between biogeochemical and optical quantities accessible to satellite remote sensing. Expected outcomes are improved estimates of phytoplankton carbon biomass and productivity, in particular in the Indian Ocean. A key benefit will be an improved end-user relevance of satellite monitoring of Australia’s oceans.Read moreRead less
Climate and environmental history of SE Queensland dunefields. This project aims to generate fundamental information about the timing and mode of formation of sand dunes in the world's largest downdrift sand system, Cooloola and Fraser Island, Queensland. The project aims to provide a world class record of climate variability, sea-level change and long term climate change from the sub-tropics of Australia, an area critical to understanding global climate links and sea-level change but where high ....Climate and environmental history of SE Queensland dunefields. This project aims to generate fundamental information about the timing and mode of formation of sand dunes in the world's largest downdrift sand system, Cooloola and Fraser Island, Queensland. The project aims to provide a world class record of climate variability, sea-level change and long term climate change from the sub-tropics of Australia, an area critical to understanding global climate links and sea-level change but where high quality long-term records are sparse and little investigated. This project will also underpin the outstanding universal value of the Fraser Island World Heritage Area which is based on the area being the world's largest sand island, but for which scientific understanding of the sand dunes is remarkably poor.Read moreRead less
Annual rainfall variability and extreme drought over the late Holocene. This project aims to understand long-term rainfall variability for Australia by developing a network of extended, high resolution rainfall records from tree rings. How anthropogenic changes to the atmosphere have influenced changing rainfall patterns across Australia is unclear. By extracting climatic information from tree growth rings across a latitudinal gradient from the subtropical north to the south coast of western Aus ....Annual rainfall variability and extreme drought over the late Holocene. This project aims to understand long-term rainfall variability for Australia by developing a network of extended, high resolution rainfall records from tree rings. How anthropogenic changes to the atmosphere have influenced changing rainfall patterns across Australia is unclear. By extracting climatic information from tree growth rings across a latitudinal gradient from the subtropical north to the south coast of western Australia, the project will extend hydroclimatic records by several centuries, to identify the frequency and extent of extreme droughts across the continent. Outcomes are expected to provide appropriate context for evaluating and adapting to climate change, allowing climate modellers, agricultural producers and other industries to improve forecasts of likely change for risk management.Read moreRead less
Robotic investigation of water optical properties in the Southern Ocean. The project aims to improve our understanding of light–matter interactions in the waters of the Southern Ocean (SO), in particular the role of phytoplankton and associated material of biological origin. Phytoplankton are the energy source for the food web and a critical component of carbon cycling in the SO. However, their dynamics in the SO cannot be quantified using satellite observations because bio-optical data processi ....Robotic investigation of water optical properties in the Southern Ocean. The project aims to improve our understanding of light–matter interactions in the waters of the Southern Ocean (SO), in particular the role of phytoplankton and associated material of biological origin. Phytoplankton are the energy source for the food web and a critical component of carbon cycling in the SO. However, their dynamics in the SO cannot be quantified using satellite observations because bio-optical data processing algorithms perform poorly due to a lack of field data. This project seeks to remedy this by improving understanding of SO bio-optics, and by providing novel algorithms of known uncertainty, based on in situ data.Read moreRead less
Australian savannah landscapes: past, present and future. Australian savannahs are productive and culturally and biologically significant landscapes but are vulnerable to climate change. The project will determine savannah function (carbon and water balance) for the present and assess how sensitive they have been to past climate variability. The project will then address how they may respond to future climate change.
Deep-sea coral records of Southern Ocean climate and nutrient dynamics . Deep-sea coral and seawater nutrient profiles collected from the Southern Ocean (SO) facing submarine canyons of south-west Australia will be used to provide new insights into the role of the SO overturning circulation in modulating global climate as well as supplying the essential nutrients that make these canyons biodiversity hot-spots for seasonal aggregations of killer and blue whales. This frontier project made possib ....Deep-sea coral records of Southern Ocean climate and nutrient dynamics . Deep-sea coral and seawater nutrient profiles collected from the Southern Ocean (SO) facing submarine canyons of south-west Australia will be used to provide new insights into the role of the SO overturning circulation in modulating global climate as well as supplying the essential nutrients that make these canyons biodiversity hot-spots for seasonal aggregations of killer and blue whales. This frontier project made possible by samples collected using Remote Operated Vehicle (ROV) technology rarely available in Australia, will also help to understand how SO circulation has influenced past changes in global climate and its future role in controlling ocean productivity in a warming world with rapidly increasing atmospheric carbon dioxide. Read moreRead less