Are proposed land-based sinks for greenhouse gases resilient to climate change and natural variability? One strategy to reduce the scale of future climate change is to enhance the storage of carbon in vegetation and soils. Evidence suggests carbon stored in vegetation and soils is itself vulnerable to climate change, placing this stored carbon at risk; this project will assess this risk to advise on the reliability of using terrestrial systems as carbon sinks.
Quantifying and mitigating changes in Australia’s rainfall belts. This project aims to understand how past climate changes affected Australia’s rainfall belts, and to reverse recent changes in rainfall belts. Australia’s climate belts are moving, but it is unclear if the effects on tropical and temperate rainfall will be permanent. This project will use past climate records and palaeoclimate databases to assess how natural and human-induced changes during the past millennium affected Australia’s ....Quantifying and mitigating changes in Australia’s rainfall belts. This project aims to understand how past climate changes affected Australia’s rainfall belts, and to reverse recent changes in rainfall belts. Australia’s climate belts are moving, but it is unclear if the effects on tropical and temperate rainfall will be permanent. This project will use past climate records and palaeoclimate databases to assess how natural and human-induced changes during the past millennium affected Australia’s rainfall zones, and specialised climate model simulations to determine whether greenhouse gas reduction could mitigate future rainfall changes. The outcomes are expected to inform policy and mitigation strategies to secure Australia’s precious water resources.Read moreRead less
Can endosymbionts alter climate change resilience in insects? This project aims to establish whether endosymbionts alter climate change vulnerability and investigate the potential for endosymbionts to be used as a tool to modify climate change resilience in insects. Heritable endosymbionts – microscopic bacteria living exclusively within host cells – are widespread in insects. A handful of studies indicate that endosymbionts may influence the thermal tolerance of their host, yet whether they al ....Can endosymbionts alter climate change resilience in insects? This project aims to establish whether endosymbionts alter climate change vulnerability and investigate the potential for endosymbionts to be used as a tool to modify climate change resilience in insects. Heritable endosymbionts – microscopic bacteria living exclusively within host cells – are widespread in insects. A handful of studies indicate that endosymbionts may influence the thermal tolerance of their host, yet whether they alter the upper thermal limits and climate change risk of insects is unknown. This fellowship will provide a greater understanding of the consequences of climate change on species persistence, as well as opening up avenues to utilise endosymbionts as a tool to manipulate the climate change resilience of insects.
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Resolving the role of kelp in blue carbon cycles to enable management. We aim to uncover how kelp forests contribute to carbon storage, biodiversity enhancement and nutrient mitigation in Australia. We will combine mapping and modelling to identify local variation in kelp carbon stocks and sequestration potential and verify kelp carbon export to deep ocean sinks through genetic tracing in seawater and sediments. Co-benefits will be identified through nutrient experiments and reef surveys. We wil ....Resolving the role of kelp in blue carbon cycles to enable management. We aim to uncover how kelp forests contribute to carbon storage, biodiversity enhancement and nutrient mitigation in Australia. We will combine mapping and modelling to identify local variation in kelp carbon stocks and sequestration potential and verify kelp carbon export to deep ocean sinks through genetic tracing in seawater and sediments. Co-benefits will be identified through nutrient experiments and reef surveys. We will also assess the risk that calcification and production of halogenic gas within the kelp forest could offset its climate mitigation potential. Project outcomes will enable management to consider kelp ecosystem services broadly and optimize our capacity to meet current emission reduction and biodiversity commitments.Read moreRead less
Coastal wetlands: are our valuable carbon sinks vulnerable? Saline coastal wetlands store large amounts of carbon and are potentially the most efficient sinks of carbon amongst natural ecosystems. This project will use isotopic tracers to quantify carbon retention within saline coastal wetlands in southeastern Australia, establish the vulnerability of these wetlands to sea-level rise using estimates of sediment accretion and surface elevation change, and use this information to predict the distr ....Coastal wetlands: are our valuable carbon sinks vulnerable? Saline coastal wetlands store large amounts of carbon and are potentially the most efficient sinks of carbon amongst natural ecosystems. This project will use isotopic tracers to quantify carbon retention within saline coastal wetlands in southeastern Australia, establish the vulnerability of these wetlands to sea-level rise using estimates of sediment accretion and surface elevation change, and use this information to predict the distribution of saline coastal wetlands and estimate the carbon sequestration potential of coastal wetlands within a ‘low-carbon economy’. This project will remove impediments to the proper economic evaluation of saline coastal wetlands and enable restoration coastal wetlands to be used to offset carbon emissions.Read moreRead less
Response of estuaries to climate change: investigating their role as sediment sinks. This project will investigate the effect of climate change on estuaries and nearby ecosystems, settlements and infrastructure. Outcomes include a framework for assessing vulnerability, estimates of sedimentation and carbon sequestration, and models to explore the impact of climate change and adaptation options on estuaries and carbon sequestration.