How effective are environmental flows? Novel approaches for monitoring and assessing ecological responses to large-scale flow alteration. Australia has begun a multi-billion dollar program to return water to stressed rivers as environmental flows. However, during times of unprecedented water scarcity, such an investment in the environment can be controversial because the ecological benefits of released water are mostly poorly understood. This project will demonstrate the effectiveness of environ ....How effective are environmental flows? Novel approaches for monitoring and assessing ecological responses to large-scale flow alteration. Australia has begun a multi-billion dollar program to return water to stressed rivers as environmental flows. However, during times of unprecedented water scarcity, such an investment in the environment can be controversial because the ecological benefits of released water are mostly poorly understood. This project will demonstrate the effectiveness of environmental flows, and promote greater understanding of the links between flow patterns and river health. The project will build upon existing knowledge to create a sound framework for planning, monitoring, and evaluation of environmental watering decisions across regional Australia, greatly improving our ability to sustainably manage rivers into the future.Read moreRead less
How does flow regulation affect food web linkages between juvenile and larval fish and aquatic invertebrates in a coastal river? River regulation to supply water for human demands has altered flow regimes in many Australian rivers. These changes in flow impact on native invertebrate and fish community composition. Environmental flow allocations seek to alleviate these impacts but managers are hampered by lack of data on the effects of flow on food web linkages, particularly for juvenile and lar ....How does flow regulation affect food web linkages between juvenile and larval fish and aquatic invertebrates in a coastal river? River regulation to supply water for human demands has altered flow regimes in many Australian rivers. These changes in flow impact on native invertebrate and fish community composition. Environmental flow allocations seek to alleviate these impacts but managers are hampered by lack of data on the effects of flow on food web linkages, particularly for juvenile and larval fish (JLF). We aim to compare food webs of invertebrates and JLF in six tributaries of the Hunter River, three of which are regulated, to determine how flow regulation changes trophic linkages. A flow release in one tributary will let us test the hypothesis that river regulation restricts food availability to JLF, reducing their viability, growth rates, and abundance.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
Ecological responses of native fishes to dynamic water flows in northwest arid Australia. This project will investigate the biological adaptations and ecology of native fishes of northwest Australia in order to assess their resilience to altered water flows due to mining activities and changing climate. The project findings will contribute to sustainable management of water and biodiversity in arid environments.
Influence of Marine Protected Areas on ecosystem resilience and ecological processes. Australia is implementing a national representative system of marine protected areas (MPAs). The aims of the MPAs include ensuring ecological viability, maintaining ecological processes, and protecting biodiversity. The ability of MPAs to achieve these aims, however, is based largely on theory rather than empirical evidence. Implementation of MPAs is often controversial as it may cause economic hardship to comm ....Influence of Marine Protected Areas on ecosystem resilience and ecological processes. Australia is implementing a national representative system of marine protected areas (MPAs). The aims of the MPAs include ensuring ecological viability, maintaining ecological processes, and protecting biodiversity. The ability of MPAs to achieve these aims, however, is based largely on theory rather than empirical evidence. Implementation of MPAs is often controversial as it may cause economic hardship to communities dependent on fishing. Our project will benefit environmental managers by determining if and how MPAs influence biodiversity, ecological processes, and ecosystem services and resilience. It will benefit the wider community by providing the rigorous scientific evidence in favour of MPAs that is demanded by stakeholders.Read moreRead less