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Impacts of changing detrital source biodiversity on estuarine ecosystems. Coastal development, invasive pests, and climate change are impacting abundances of estuarine aquatic plants. This in turn is affecting the composition and magnitude of detrital enrichment, threatening biodiversity, fisheries production and endangered birds. Our pioneering research will forecast the impacts of changing detrital-source biodiversity on soft-sediment communities and the food webs they support in Australia and ....Impacts of changing detrital source biodiversity on estuarine ecosystems. Coastal development, invasive pests, and climate change are impacting abundances of estuarine aquatic plants. This in turn is affecting the composition and magnitude of detrital enrichment, threatening biodiversity, fisheries production and endangered birds. Our pioneering research will forecast the impacts of changing detrital-source biodiversity on soft-sediment communities and the food webs they support in Australia and the USA. Ecological generalities obtained can be used to support policy development that ensures sustainable management of estuaries. This work will also facilitate training of early career researchers and focus research efforts of leading US researchers towards issues crucial for Australian estuarine management.Read moreRead less
Stress, virulence and bacterial disease in temperate seaweeds: the rise of the microbes. Climate change is predicted to increase the spread and virulence of pathogens, and decrease the resistance to disease via temperature stress on the hosts. Combined with other human impacts (higher nutrients, pollution), we may be facing a major rise in the effect of disease on natural communities. However, these effects are largely unstudied. We will investigate the impact of marine pathogens on kelps and ....Stress, virulence and bacterial disease in temperate seaweeds: the rise of the microbes. Climate change is predicted to increase the spread and virulence of pathogens, and decrease the resistance to disease via temperature stress on the hosts. Combined with other human impacts (higher nutrients, pollution), we may be facing a major rise in the effect of disease on natural communities. However, these effects are largely unstudied. We will investigate the impact of marine pathogens on kelps and other seaweeds when they are stressed by temperature, elevated nutrients or other anthropogenic stressors. Kelp are the 'trees of the oceans', the organisms responsible for creating much of the habitat that fishes and other organisms live in. The loss of kelp forests due to disease would radically change these environments.Read moreRead less
Optimizing the allocation of resources for defending marine protected areas against invasive species. The National Representative System of Marine Protected Areas contributes directly to the protection of marine biodiversity, and to Australia's international obligations under the UN Convention on Biological Diversity. Non-indigenous species have potential to undermine native biodiversity in marine protected areas across Australia. By identifying the most effective strategies for dealing with pot ....Optimizing the allocation of resources for defending marine protected areas against invasive species. The National Representative System of Marine Protected Areas contributes directly to the protection of marine biodiversity, and to Australia's international obligations under the UN Convention on Biological Diversity. Non-indigenous species have potential to undermine native biodiversity in marine protected areas across Australia. By identifying the most effective strategies for dealing with potential incursions of non-indigenous species in Victorian marine national parks and sanctuaries, the project will make a valuable contribution to the viability of local marine ecosystems and the maintenance of biodiversity. Furthermore, it will provide a template to aid similar decision-making in other marine protected areas around the country.Read moreRead less
Winter temperature and salinity profile measurements in the Southern Ocean using elephant seals as ocean sampling platforms. As a result of the paucity of winter data in the Southern Ocean, sophisticated ocean models such as the GFDL MOM are hampered in their ability to properly represent the complex processes in the Antarctic sea ice zone. Elephant seals forage in the Southern Ocean throughout winter, and traverse the water column between 0 and 800 metres many times each day, providing an oppo ....Winter temperature and salinity profile measurements in the Southern Ocean using elephant seals as ocean sampling platforms. As a result of the paucity of winter data in the Southern Ocean, sophisticated ocean models such as the GFDL MOM are hampered in their ability to properly represent the complex processes in the Antarctic sea ice zone. Elephant seals forage in the Southern Ocean throughout winter, and traverse the water column between 0 and 800 metres many times each day, providing an opportunity to collect profiles of temperature and salinity. The resulting data will contribute to oceanographic studies of water mass formation and frontal variability, including comparisons with historical data and assimilation into a complex ocean model.Read moreRead less
Global climate change and the future for coral reef fishes. Australia's coral reefs are icons of immense biological, economic and cultural importance. They are also threatened by climate change. This research will address the serious lack of knowledge about the impact of climate change on coral reef fishes and integrate with other research at the ARC Centre of Excellence for Coral Reef Studies to help find innovative solutions to the problem of climate change and promote the sustainable manageme ....Global climate change and the future for coral reef fishes. Australia's coral reefs are icons of immense biological, economic and cultural importance. They are also threatened by climate change. This research will address the serious lack of knowledge about the impact of climate change on coral reef fishes and integrate with other research at the ARC Centre of Excellence for Coral Reef Studies to help find innovative solutions to the problem of climate change and promote the sustainable management of Australia's extensive coral reef ecosystems.Read moreRead less
Understanding coastal biodiversity: The impact of marine production subsidies upon arid coastal environments. Many of the Earth's coastlines have productive seas next to arid terrestrial habitats. Much of the coastline of Western Australia is arid. Our project will determine if biodiversity in fringing terrestrial areas is controlled by the supply of marine plant material that is transported to land by waves, wind and birds. A consequence of increasing coastal usage is associated growing anthrop ....Understanding coastal biodiversity: The impact of marine production subsidies upon arid coastal environments. Many of the Earth's coastlines have productive seas next to arid terrestrial habitats. Much of the coastline of Western Australia is arid. Our project will determine if biodiversity in fringing terrestrial areas is controlled by the supply of marine plant material that is transported to land by waves, wind and birds. A consequence of increasing coastal usage is associated growing anthropogenic pressures on the coastal environment. Our aim is to enhance awareness of the interactions that occur between terrestrial and marine systems, and hence to increase the capacity of the public and private sector to manage marine and terrestrial ecosystems, and the interface between them.Read moreRead less
Diversity of Salinispora actinobacteria producing pharmaceutically relevant natural products from Australian marine sponges. By investigating the distribution of marine microbial resources relevant to drug discovery, we will directly contribute to ARC's Research Priority I - An Environmentally Sustainable Australia Priority Goal and the Priority Goal 'Sustainable use of Australia's biodiversity'. We will determine sources of marine bacteria and their genes useful for discovery of new natural pro ....Diversity of Salinispora actinobacteria producing pharmaceutically relevant natural products from Australian marine sponges. By investigating the distribution of marine microbial resources relevant to drug discovery, we will directly contribute to ARC's Research Priority I - An Environmentally Sustainable Australia Priority Goal and the Priority Goal 'Sustainable use of Australia's biodiversity'. We will determine sources of marine bacteria and their genes useful for discovery of new natural products for treatment of human diseases. We will do this by understanding where new strains of Salinispora bacteria may be isolated and how they are distributed in association with Australian marine sponge fauna, and by determining the distribution and chemical and genetic diversity of novel marine Salinispora bacteria.Read moreRead less
A genetic and experimental assessment of the frequency and importance of hybridisation of Black and Yellow Fin Bream. Bream (Acanthopagrus spp.) species underpin several valuable and heavily exploited fisheries in eastern Australia, but the two principal species, yellowfin (A. australis) and black (A, butcheri), interbreed significantly. This hybridisation is poorly documented and, with increasing harvests, could lead to long-term economic impacts and severe repercussions on biodiversity. It cou ....A genetic and experimental assessment of the frequency and importance of hybridisation of Black and Yellow Fin Bream. Bream (Acanthopagrus spp.) species underpin several valuable and heavily exploited fisheries in eastern Australia, but the two principal species, yellowfin (A. australis) and black (A, butcheri), interbreed significantly. This hybridisation is poorly documented and, with increasing harvests, could lead to long-term economic impacts and severe repercussions on biodiversity. It could, for example, increase the risk of localised extinctions and impact on genetic diversity of both species. We will use an innovative combination of molecular genetics and breeding experiments to: (i) determine frequency and direction of hybridisation; (ii) infer strength of genetic connections among estuaries; and, (iii) explore implications for sustainable fisheries management.Read moreRead less
Effect of deep-sea drilling on sustainability of deep-sea ecosystems. Offshore oil and gas production makes a significant contribution to the Australian economy and enhances our energy security. Australia's vast deep-sea reserves of hydrocarbons lie on the NW Shelf and in Bass Strait, ecological 'hot spots' that are extremely vulnerable to the impact of exploration, extraction and production. Using deep-sea equipment, we will conduct the field experiments that are essential to understanding the ....Effect of deep-sea drilling on sustainability of deep-sea ecosystems. Offshore oil and gas production makes a significant contribution to the Australian economy and enhances our energy security. Australia's vast deep-sea reserves of hydrocarbons lie on the NW Shelf and in Bass Strait, ecological 'hot spots' that are extremely vulnerable to the impact of exploration, extraction and production. Using deep-sea equipment, we will conduct the field experiments that are essential to understanding these ecosystems and the impact of deep-sea structures. Our advances will produce data and develop methodologies that will make Australia a world leader in reconciling our deep-sea energy and environmental needs.Read moreRead less
Stocking of fish and prawns at ecologically determined densities into Australian estuaries. Increasing numbers of people like to go fishing, and to catch a fish, which translates into tourism income and aquaculture business. Restocking is a fisheries management option when the natural supply or survival of larvae is limited. This study will determine for the first time the ecologically appropriate abundance of small mulloway and prawns that an estuary can sustain. We will assess the extra eff ....Stocking of fish and prawns at ecologically determined densities into Australian estuaries. Increasing numbers of people like to go fishing, and to catch a fish, which translates into tourism income and aquaculture business. Restocking is a fisheries management option when the natural supply or survival of larvae is limited. This study will determine for the first time the ecologically appropriate abundance of small mulloway and prawns that an estuary can sustain. We will assess the extra effort needed to release larvae into particular key habitats, and develop new technologies to identify our larvae from the wild. Our findings will be relevant to restocking of Australia's inland rivers, which at present has little ecological basis.Read moreRead less