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Next-generation models to predict cyanobacteria harmful algal blooms. This project aims to address the need for improved predictions of cyanobacteria (blue-green algae) harmful algal blooms. Accurate predictions of blooms with computer models are important to support management strategies to prevent their occurrence. This project is expected to generate new knowledge of strain-level variation in cyanobacteria that leads to toxic blooms. This project will lead to new knowledge of the significance ....Next-generation models to predict cyanobacteria harmful algal blooms. This project aims to address the need for improved predictions of cyanobacteria (blue-green algae) harmful algal blooms. Accurate predictions of blooms with computer models are important to support management strategies to prevent their occurrence. This project is expected to generate new knowledge of strain-level variation in cyanobacteria that leads to toxic blooms. This project will lead to new knowledge of the significance of strain-level variation in cyanobacteria harmful algal blooms, how strains influence toxin production and models for prediction of bloom and toxins. The project will generate significant benefits for water security for the purposes human consumption and recreation, and ecosystem health.Read moreRead less
Assessing the ecological costs and benefits of artificial wetlands in urban landscapes. The nature and distribution of wetlands around cities is changing at an unprecedented rate, with artificial wetlands increasingly dominating urban landscapes. The consequences of these changes for animals, however, are largely unknown. Some artificial wetlands may be poor quality habitats that pose considerable risks to urban biodiversity, while others may play an important role in conservation. The project a ....Assessing the ecological costs and benefits of artificial wetlands in urban landscapes. The nature and distribution of wetlands around cities is changing at an unprecedented rate, with artificial wetlands increasingly dominating urban landscapes. The consequences of these changes for animals, however, are largely unknown. Some artificial wetlands may be poor quality habitats that pose considerable risks to urban biodiversity, while others may play an important role in conservation. The project aims to examine the ecological costs and benefits of artificial wetlands for native animals, and provide guidelines to help ensure wetland construction and management is cost effective and maximises biodiversity outcomes.Read moreRead less
Identifying how a non-stationary environment affects species persistence. This project aims to achieve the first application of new ecological theory that accounts for environmental change and species’ ability to respond to that change, using caddisflies that lay eggs on rocks in rivers as a case study. Long-term change in climate has always occurred but is often not accounted for when estimating future population sizes and extinction risk in species. Outcomes will include new knowledge on chang ....Identifying how a non-stationary environment affects species persistence. This project aims to achieve the first application of new ecological theory that accounts for environmental change and species’ ability to respond to that change, using caddisflies that lay eggs on rocks in rivers as a case study. Long-term change in climate has always occurred but is often not accounted for when estimating future population sizes and extinction risk in species. Outcomes will include new knowledge on changing habitat availability, species’ ability to move in the landscape and successfully lay and hatch eggs, while creating a general template for use in other species. This will lead to significant benefits for conservation efforts worldwide, via the template’s inclusion in accepted extinction assessment protocols.Read moreRead less
Plant species economics and strategy-dimensions of plant ecology. Ecological strategies of plant species are differentiated mainly along economic dimensions. Four key dimensions are the leaf lifespan - leaf mass per area tradeoff, the seed mass - seed output tradeoff, the leaf size - twig size spectrum, and canopy height at maturity. Each dimension reflects a spectrum of allocation patterns. Costs, benefits, tradeoffs and correlations underpinning these strategy-dimensions will be investigated w ....Plant species economics and strategy-dimensions of plant ecology. Ecological strategies of plant species are differentiated mainly along economic dimensions. Four key dimensions are the leaf lifespan - leaf mass per area tradeoff, the seed mass - seed output tradeoff, the leaf size - twig size spectrum, and canopy height at maturity. Each dimension reflects a spectrum of allocation patterns. Costs, benefits, tradeoffs and correlations underpinning these strategy-dimensions will be investigated within Australia, and in collaboration with partner investigators overseas.Read moreRead less
Plant ecological strategies across species and an evolutionary-ecology vegetation model. This proposal is aimed at fundamental science about plant traits and water use and flammability. These vegetation processes underpin management of bushfires, water, salinity and carbon storage, which are national priorities for An Environmentally Sustainable Australia. The proposal pursues cost-benefit understanding of stem-leaf relations and of flammability, and aims also to develop an evolutionary-ecology ....Plant ecological strategies across species and an evolutionary-ecology vegetation model. This proposal is aimed at fundamental science about plant traits and water use and flammability. These vegetation processes underpin management of bushfires, water, salinity and carbon storage, which are national priorities for An Environmentally Sustainable Australia. The proposal pursues cost-benefit understanding of stem-leaf relations and of flammability, and aims also to develop an evolutionary-ecology vegetation model (EEVM). An EEVM will encapsulate the next generation of fundamental ecological science, with direct application for global change scenarios and for ecosystem management. This proposal forms a network among outstanding laboratories internationally for the purpose, and gives Australia a lead role.Read moreRead less
Establishing an ecological basis for stocking density of Australian bass in freshwaters: Experimental field tests of a general numerical model. Large numbers of the Australian public go fishing, particularly in rivers and impoundments. Angling in these waterways provides a strong source of income for rural and regional communities. The stocking of native fish to support inland angling also sustains much of the aquaculture industry in western NSW and Queensland. This study will develop an optimal ....Establishing an ecological basis for stocking density of Australian bass in freshwaters: Experimental field tests of a general numerical model. Large numbers of the Australian public go fishing, particularly in rivers and impoundments. Angling in these waterways provides a strong source of income for rural and regional communities. The stocking of native fish to support inland angling also sustains much of the aquaculture industry in western NSW and Queensland. This study will develop an optimal approach to stocking Australian bass which is relevant for other stocked freshwater species, and will allow stocking to be undertaken in an environmentally responsible manner. This will both enhance the outcome of investment of public funds in stocking, and enhance the recreational fishing experience that is so important to rural regional communities.Read moreRead less
Assessing the Groundwater Dependence of Nearshore Coastal Ecosystems in the South East of South Australia. Groundwater in the SE region of SA is a valuable resource. The South East Catchment Water Management Board is responsible for planning sustainable management of these resources. The Board seeks to discover whether any marine ecosystems are dependent upon these groundwater resources, to inform their water-allocation planning decisions. This research combines field-based marine ecology with ....Assessing the Groundwater Dependence of Nearshore Coastal Ecosystems in the South East of South Australia. Groundwater in the SE region of SA is a valuable resource. The South East Catchment Water Management Board is responsible for planning sustainable management of these resources. The Board seeks to discover whether any marine ecosystems are dependent upon these groundwater resources, to inform their water-allocation planning decisions. This research combines field-based marine ecology with groundwater hydrology to assess the influence of groundwater outflow upon small estuaries, sandy beaches and lagoonal seagrass meadows that exist along the coastline from Kingston SE to the Victorian border. Our multidisciplinary approach will set a benchmark nationally and internationally for such applied research.Read moreRead less
Contemporary ecological threats from historical pollution events and their modification by environmental conditions. Many Australian ports have contaminated sediments that are a legacy of industrial pollution. The resuspension of these sediments through shipping or dredging activity represents an obvious, yet unsubstantiated, threat to the biodiversity and health of marine communities living well above the seafloor. This research proposal addresses a strategic knowledge gap with implications for ....Contemporary ecological threats from historical pollution events and their modification by environmental conditions. Many Australian ports have contaminated sediments that are a legacy of industrial pollution. The resuspension of these sediments through shipping or dredging activity represents an obvious, yet unsubstantiated, threat to the biodiversity and health of marine communities living well above the seafloor. This research proposal addresses a strategic knowledge gap with implications for appropriate management of port operations. Identifying the conditions under which contaminated sediments may cause an impact, and the environmental factors that modify these effects, will produce significant advances in scientific understanding and the results will be of strategic interest to all Australian Port Authorities. Read moreRead less
Reconstructing the historical frequency and intensity of Australian droughts: A multi-species dendrochronological approach. Drought directly and indirectly impacts every Australian. Severe droughts devastate rural communities, lead to increased water restrictions and bushfire activity, slows the national economy and threatens diverse ecosystems. Our research will improve understanding of where, when, and how intensely droughts have occurred across eastern Australia in the past. The results will ....Reconstructing the historical frequency and intensity of Australian droughts: A multi-species dendrochronological approach. Drought directly and indirectly impacts every Australian. Severe droughts devastate rural communities, lead to increased water restrictions and bushfire activity, slows the national economy and threatens diverse ecosystems. Our research will improve understanding of where, when, and how intensely droughts have occurred across eastern Australia in the past. The results will provide unique insights into the processes that generate Australian droughts and how future droughts might be anticipated. The results will provide farmers, hydrologists, and policy-makers with better data on long-term variability in water supplies to improve local, regional, and national water planning initiatives and infrastructure development.Read moreRead less
Are nutrients the key driver in stimulating toxic algae in subtropical water reservoirs? This project aims to determine the key factors causing blooms of the toxic algae, Cylindrospermopsis raciborskii, which dominates many freshwater reservoirs throughout Queensland. Little is known of why blooms of this species occur. Without the development of this understanding and research capacity to tackle this issue in Queensland, the severity of the problem is likely to increase, putting ever-greater ....Are nutrients the key driver in stimulating toxic algae in subtropical water reservoirs? This project aims to determine the key factors causing blooms of the toxic algae, Cylindrospermopsis raciborskii, which dominates many freshwater reservoirs throughout Queensland. Little is known of why blooms of this species occur. Without the development of this understanding and research capacity to tackle this issue in Queensland, the severity of the problem is likely to increase, putting ever-greater pressure on drinking water supplies. The outcomes from this project would therefore be an increased capacity to predict blooms, and identification of management options for reducing the occurrence of blooms to ensure a cost-effective and safe water supply.Read moreRead less