Cascading effects of Australia's ecological extinctions on biodiversity and ecosystem function. The current rate of species extinctions is so extensive that it has been described as the “sixth mass extinction”. In Australian ecosystems, extinctions and declines of mammals have been dramatic, with formerly abundant species now “ecologically extinct”, meaning they are too rare to continue to play important ecological roles. The loss of entire functional guilds may have cascading effects on biodive ....Cascading effects of Australia's ecological extinctions on biodiversity and ecosystem function. The current rate of species extinctions is so extensive that it has been described as the “sixth mass extinction”. In Australian ecosystems, extinctions and declines of mammals have been dramatic, with formerly abundant species now “ecologically extinct”, meaning they are too rare to continue to play important ecological roles. The loss of entire functional guilds may have cascading effects on biodiversity and ecosystem function. This project uses a multi-scalar experimental approach to investigate the broader impacts of mammal declines on Australian ecosystems, accounting for interactions with climate. The outcomes will include new insights into the pre-European state of Australian ecosystems and more realistic targets for ecosystem restoration.Read moreRead less
Testing the Flood Pulse Concept for rivers with variable flow regimes. For floodplain rivers the major unifying conceptual model linking hydrology, biogeochemistry and ecology is the Flood Pulse Concept (FPC). The model is based on rivers that have a seasonally predictable and long duration inundation of floodplain habitats. Recent reviews of the FPC indicate that the model needs to be broadened to describe the function of rivers with more variable flow regimes. This project will test some of th ....Testing the Flood Pulse Concept for rivers with variable flow regimes. For floodplain rivers the major unifying conceptual model linking hydrology, biogeochemistry and ecology is the Flood Pulse Concept (FPC). The model is based on rivers that have a seasonally predictable and long duration inundation of floodplain habitats. Recent reviews of the FPC indicate that the model needs to be broadened to describe the function of rivers with more variable flow regimes. This project will test some of the predictions of the FPC for variable dryland rivers by investigating how food webs in the channels of a floodplain reach respond to flows of different magnitude, seasonal timing and duration.Read moreRead less
The origins of electroreception and nocturnality in the earliest known jawed vertebrates and their bearing on vertebrate diversification. This project aims to discover primary new data to pinpoint the timing, anatomical origins and phylogenetic significance when two key sensory systems first appeared in modern vertebrates: electroreception and specialised nocturnal vision. Such abilities today allow high diversity of vertebrates to co-exist within the same geographical range, for example on trop ....The origins of electroreception and nocturnality in the earliest known jawed vertebrates and their bearing on vertebrate diversification. This project aims to discover primary new data to pinpoint the timing, anatomical origins and phylogenetic significance when two key sensory systems first appeared in modern vertebrates: electroreception and specialised nocturnal vision. Such abilities today allow high diversity of vertebrates to co-exist within the same geographical range, for example on tropical reefs or rainforest communities, through careful temporal niche partitioning where reliance on other sensory systems takes over from vision and olfaction as the principal method of prey detection. This project aims to elucidate how the modern fish diversity was shaped by such significant early evolutionary events.Read moreRead less
Effects of physical disturbance on kelp-dominated reef communities across a broad temperate-tropical transition zone. The outcomes of this project will improve the understanding of the interactions between physical disturbances, nutrient enrichment and climate change. This addresses the national research priority of an environmentally sustainable Australia (priority goals sustainable use of biodiversity and responding to climate changes) and will contribute directly to Australia's commitments on ....Effects of physical disturbance on kelp-dominated reef communities across a broad temperate-tropical transition zone. The outcomes of this project will improve the understanding of the interactions between physical disturbances, nutrient enrichment and climate change. This addresses the national research priority of an environmentally sustainable Australia (priority goals sustainable use of biodiversity and responding to climate changes) and will contribute directly to Australia's commitments on marine ecosystem management and conservation.Read moreRead less
Functional links between estuaries and their catchments: How does land use change affect estuarine ecological and bio-geochemical function? Estuaries are iconic recreational areas of high ecological and socio-economic value. Estuarine health is strongly linked to the catchments that feed them, yet we have no detailed understanding of these links. This project will use a number of state of the art approaches to better understand how land use affects estuarine health.
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE100100041
Funder
Australian Research Council
Funding Amount
$100,000.00
Summary
A high-resolution isotope facility for low cost analysis of water, plant, and soil/sediment samples to understand environmental change. The most significant environmental challenges facing Australia include ensuring sustainable management of our water resources and conservation of both terrestrial and marine biodiversity, particularly in the face of our changing climate and land-use. The new instruments will accelerate progress across a number of projects aimed at understanding the developme ....A high-resolution isotope facility for low cost analysis of water, plant, and soil/sediment samples to understand environmental change. The most significant environmental challenges facing Australia include ensuring sustainable management of our water resources and conservation of both terrestrial and marine biodiversity, particularly in the face of our changing climate and land-use. The new instruments will accelerate progress across a number of projects aimed at understanding the development of groundwater resources, the relative dependency of ecosystems on groundwater versus soil and surface water, and an assessment of the likely impacts of altered hydrology, especially dewatering and salinisation, on ecosystems. In addition, they will also be used to extend our knowledge of climate variability in the recent past and increase understanding of critical marine resources.Read moreRead less
Does coevolution drive speciation? This project aims to connect micro-evolutionary processes with macro-evolutionary patterns to test the extent to which tightly coupled co-evolutionary interactions between species drive evolutionary diversification. The project will use techniques including the most recent phylogenetic modelling methods, field experiments and molecular genetics. Expected outcomes include advancing understanding of the mechanisms that generate biodiversity and developing new tec ....Does coevolution drive speciation? This project aims to connect micro-evolutionary processes with macro-evolutionary patterns to test the extent to which tightly coupled co-evolutionary interactions between species drive evolutionary diversification. The project will use techniques including the most recent phylogenetic modelling methods, field experiments and molecular genetics. Expected outcomes include advancing understanding of the mechanisms that generate biodiversity and developing new techniques for acquisition of DNA from museum specimens. The project is expected to provide significant benefits, such as insights into the processes that promote new species in nature.Read moreRead less
Sources of genetic and phenotypic variation in sexual selection. This project will contribute towards Australia's reputation as a country where excellent and original research in evolutionary biology is conducted. The project will focus on the evolution of mate choice in the Western Australian rainbowfish, which has never been formally studied. Our research will therefore work towards a better understanding of Australian native fauna. Conceptually, the work encompasses new and innovative experim ....Sources of genetic and phenotypic variation in sexual selection. This project will contribute towards Australia's reputation as a country where excellent and original research in evolutionary biology is conducted. The project will focus on the evolution of mate choice in the Western Australian rainbowfish, which has never been formally studied. Our research will therefore work towards a better understanding of Australian native fauna. Conceptually, the work encompasses new and innovative experimental procedures that will address fundamental questions in sexual selection. The results will ultimately be geared towards publication in the highest ranking journals, thereby promoting Australian science on the international stage. Australian science will further benefit from the training of young scientists.Read moreRead less
Postcopulatory sexual selection and intraspecific variation in sperm competition traits. This project will contribute towards Australia's burgeoning reputation as a country where excellent and original research in behavioural ecology and evolution is conducted. By focusing on the evolution and function of sperm and genitalic traits, the project will address fundamental questions at the core of contemporary evolutionary research, thereby yielding results that will have a significant international ....Postcopulatory sexual selection and intraspecific variation in sperm competition traits. This project will contribute towards Australia's burgeoning reputation as a country where excellent and original research in behavioural ecology and evolution is conducted. By focusing on the evolution and function of sperm and genitalic traits, the project will address fundamental questions at the core of contemporary evolutionary research, thereby yielding results that will have a significant international impact. Australian science will further benefit from the research fellow's established collaborations with international scientists and through the training of young scientists.Read moreRead less
The role of mycorrhizal fungi in the nutrition of temperate terrestrial orchids. This project addresses the role of external mycelial systems in the carbon and mineral nutrition of temperate terrestrial orchids. The project will determine the processes of nutrient transfer in the protocorm and adult phases of development across a range of terrestrial temperate orchids to inform conservation and restoration efforts.