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Enhancing nutrient retention in soils through management of microbial biomass. Soil microbial-processes are generally studied in relation to mineralisation of nutrients but rarely for their potential to retain nutrients and reduce nutrient leaching. We hypothesise that management of microbial immobilisation will enhance nutrient retention in nutrient enriched soils during seasonal rains. This hypothesis will be tested under strongly seasonal environments of southwest Australia where nutrient lea ....Enhancing nutrient retention in soils through management of microbial biomass. Soil microbial-processes are generally studied in relation to mineralisation of nutrients but rarely for their potential to retain nutrients and reduce nutrient leaching. We hypothesise that management of microbial immobilisation will enhance nutrient retention in nutrient enriched soils during seasonal rains. This hypothesis will be tested under strongly seasonal environments of southwest Australia where nutrient leaching from soils degrades quality of surface and groundwater. We will first investigate pathways and conditions leading to microbial immobilisation. We will then explore the regulation of substrate and nutrient conditions to promote such retention, and subsequently develop management interventions based on microbially-mediated nutrient retention.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
Special Research Initiatives - Grant ID: SR0354582
Funder
Australian Research Council
Funding Amount
$20,000.00
Summary
Australia-NZ Network for Vegetation Function and Futures. Plants shape our landscapes and drive ecosystem processes from local to global scale. Plant species vary widely in quantitative functional traits. Global datasets about functional variation are emerging, with Australian and NZ leadership. A network would be supported in both Australia and NZ and with strong links elsewhere. It would target seven ambitious but achievable research developments. Each of them demands intensive conversation be ....Australia-NZ Network for Vegetation Function and Futures. Plants shape our landscapes and drive ecosystem processes from local to global scale. Plant species vary widely in quantitative functional traits. Global datasets about functional variation are emerging, with Australian and NZ leadership. A network would be supported in both Australia and NZ and with strong links elsewhere. It would target seven ambitious but achievable research developments. Each of them demands intensive conversation between separate disciplines. Networking across all seven strands will create a broader linkage, spanning across palaeobiology, ecosystem function, vegetation structure, global change, ecophysiology, phylogeny, genomics, ecoinformatics and evolutionary theory.Read moreRead less
ARC Australia-New Zealand Research Network for Vegetation Function. Plant species vary widely in quantitative functional traits, and in their relations to climate, soils and geography. Global generalizations are emerging. Vegetation Function network will reach from plant function into genomics and crop breeding, into palaeoecology and vegetation history, into landscape management for carbon, water and salinity outcomes, into forecasting future ecosystems under global change, and into phylogeny, ....ARC Australia-New Zealand Research Network for Vegetation Function. Plant species vary widely in quantitative functional traits, and in their relations to climate, soils and geography. Global generalizations are emerging. Vegetation Function network will reach from plant function into genomics and crop breeding, into palaeoecology and vegetation history, into landscape management for carbon, water and salinity outcomes, into forecasting future ecosystems under global change, and into phylogeny, ecoinformatics and evolutionary theory. Across this span, working groups will target nine identified opportunities for breakthrough research. Each research target needs input from two or more disciplines. Together, the nine targets link across disciplines, as a network that spans from genomic to planetary scales.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.
Changing water availability and the conservation of wide-ranging species. Changing water availability and the conservation of wide-ranging species. This project aims to examine the factors that influence conservation in multiple-use zones, using a functional habitat approach to study hollow-dependent black-cockatoos and parrots in the jarrah forest of south-western Australia as a model system. It will focus on how water availability influences landscape use, and its potential as a management too ....Changing water availability and the conservation of wide-ranging species. Changing water availability and the conservation of wide-ranging species. This project aims to examine the factors that influence conservation in multiple-use zones, using a functional habitat approach to study hollow-dependent black-cockatoos and parrots in the jarrah forest of south-western Australia as a model system. It will focus on how water availability influences landscape use, and its potential as a management tool, and use this information to effectively conserve wide-ranging species in multiple-use landscapes in a changing climate. The project is anticipated to reduce the negative effects of competing land uses on biodiversity and improve the efficiency of conservation and landscape management.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.
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.
How does soil fertility affect jarrah forest rehabilitation after mining? This project will examine the effect of fertiliser additions on the species composition and functional diversity of jarrah forest that develops after bauxite-mining. It is directly relevant to the achievement of the sustainable use of natural resources in Australia. Expected outcomes are best-practice management guidelines regarding the amount of fertiliser that results in the most effective achievement of completion cri ....How does soil fertility affect jarrah forest rehabilitation after mining? This project will examine the effect of fertiliser additions on the species composition and functional diversity of jarrah forest that develops after bauxite-mining. It is directly relevant to the achievement of the sustainable use of natural resources in Australia. Expected outcomes are best-practice management guidelines regarding the amount of fertiliser that results in the most effective achievement of completion criteria, and also an improved understanding of the consequences of fertiliser application on the biodiversity (plants and soil biota) and ecosystem function of rehabilitated forest ecosystems. Read moreRead less
Integrating seagrass recruitment and growth at the shoot scale with temporal and spatial dynamics of seagrass meadows in marine landscapes. In Australia, seagrass loss associated with human activity is one of the most serious issues affecting the marine environment. Despite this, processes contributing to maintenance of seagrass meadows are poorly understood. This project addresses meadow maintenance through measuring seedling recruitment, clonal growth and patch dynamics for 3 species of seagra ....Integrating seagrass recruitment and growth at the shoot scale with temporal and spatial dynamics of seagrass meadows in marine landscapes. In Australia, seagrass loss associated with human activity is one of the most serious issues affecting the marine environment. Despite this, processes contributing to maintenance of seagrass meadows are poorly understood. This project addresses meadow maintenance through measuring seedling recruitment, clonal growth and patch dynamics for 3 species of seagrasses, and modeling emergent patterns of meadow expansion. The outcomes will be integration of shoot-scale and meadow-scale dynamics in shallow subtidal landscapes, resulting in a clearer understanding of and ability to manage large-scale changes in seagrass meadows caused by natural and anthropogenic influences.
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