Mixed species plantations: does diversity help tropical eucalypts grow faster, better, longer? To test the assumption that mixtures are better than monocultures, using data from experiments (QFRI) and community plantings. Growth rate, habit (form, branching), timber and soil characteristics in Eucalyptus pellita (Red Mahogany) plantings should elucidate whether mixtures:
1. grow (above-ground woody biomass) faster than pure plantings;
2. have straighter trees with smaller branches;
3. improve ....Mixed species plantations: does diversity help tropical eucalypts grow faster, better, longer? To test the assumption that mixtures are better than monocultures, using data from experiments (QFRI) and community plantings. Growth rate, habit (form, branching), timber and soil characteristics in Eucalyptus pellita (Red Mahogany) plantings should elucidate whether mixtures:
1. grow (above-ground woody biomass) faster than pure plantings;
2. have straighter trees with smaller branches;
3. improve soil fertility; and whether
4. differences are accentuated in subsequent rotations.
E. pellita has valuable dark-red timber, and is widely planted in north Queensland, despite variable performance (3-30 m3/ha/yr, average 10m3/ha/yr). Analyses will reveal opportunities for conservation outcomes and sustainable timber production.Read moreRead less
Protecting Australia's pine plantations from exotic pests and climate change. This project will protect pine plantations (representing 57% of Australia's $3.3 billion pa forestry industry) from the dual threat of exotic pests and climate change. Sirex wood wasp has been well controlled until the recent, unprecedented, increase of ips bark beetles. The ips beetle is now disrupting biological control of sirex by its feeding activity so work is required to understand and combat this effect. The wor ....Protecting Australia's pine plantations from exotic pests and climate change. This project will protect pine plantations (representing 57% of Australia's $3.3 billion pa forestry industry) from the dual threat of exotic pests and climate change. Sirex wood wasp has been well controlled until the recent, unprecedented, increase of ips bark beetles. The ips beetle is now disrupting biological control of sirex by its feeding activity so work is required to understand and combat this effect. The work is made more urgent by looming climate change because storm-damage, drought and heat stressed trees are especially vulnerable to sirex attack. It is estimated that this novel pest management approach could save the industry at least $188 million pa based on a conservative estimate of reducing losses by 10%.Read moreRead less
Pest Status and Management of a Creiss psyllid in Eucalyptus plantations. Research studies are required on the ecology and epidemiology of a Creiis psyllid, recently found causing significant damage in young Eucalyptus dunnii plantations. The susceptibility to psyllid damage to a range of selected clonal types will be examined. With increasing community concerns associated with insecticide usage and to reduce costs, exploitation of natural resistance is an avenue that counters economic threat f ....Pest Status and Management of a Creiss psyllid in Eucalyptus plantations. Research studies are required on the ecology and epidemiology of a Creiis psyllid, recently found causing significant damage in young Eucalyptus dunnii plantations. The susceptibility to psyllid damage to a range of selected clonal types will be examined. With increasing community concerns associated with insecticide usage and to reduce costs, exploitation of natural resistance is an avenue that counters economic threat from herbivorous insects. Since Australia is currently planting 100,000 ha of eucalypts per year results from this project are essential to build better management strategies for reduce the impact of this and all pests on tree survival and growth.Read moreRead less
The physiological ecology of forest succession: explaining shade tolerance variation in evergreen and deciduous trees. This work will strengthen both the theoretical framework and the local knowledge base for sustainable timber production from natural forests, and for habitat restoration programs (National Research Priority 1.5: Sustainable Use of Australia's Biodiversity). These same advances of global and local relevance will also enable better quality input into models predicting vegetation d ....The physiological ecology of forest succession: explaining shade tolerance variation in evergreen and deciduous trees. This work will strengthen both the theoretical framework and the local knowledge base for sustainable timber production from natural forests, and for habitat restoration programs (National Research Priority 1.5: Sustainable Use of Australia's Biodiversity). These same advances of global and local relevance will also enable better quality input into models predicting vegetation dynamics under climate change scenarios (Research Priority 1.7: Responding to climate change & variability). Furthermore, by clarifying relationships of shade tolerance with other stress-tolerance strategies, this work will help us understand the evolutionary potential of local floras to respond to global change.Read moreRead less
Wood quality improvement for spotted gum. Eucalypts are one of the world's top sources of hardwood saw and pulp logs. This project will provide a model for accelerated tree improvement for wood quality. The aim is to link genes for wood formation with wood quality phenotypes in spotted gum, a priority hardwood eucalypt for Northern Australia. The significance of the approach is time and costs saved in the deployment of plantations of higher wood quality through the circumvention of delays to gen ....Wood quality improvement for spotted gum. Eucalypts are one of the world's top sources of hardwood saw and pulp logs. This project will provide a model for accelerated tree improvement for wood quality. The aim is to link genes for wood formation with wood quality phenotypes in spotted gum, a priority hardwood eucalypt for Northern Australia. The significance of the approach is time and costs saved in the deployment of plantations of higher wood quality through the circumvention of delays to generate populations required for alternative approaches and early selection available with molecular breeding.Read moreRead less
Understanding fungal diversity and functioning in forest soils using molecular and stable isotope approaches. The project aims to investigate fungal community structure and functioning in forest soils using novel molecular, stable isotope and physiological approaches. This will provide new insights into the linkage between diversity and functioning in forest soil fungal communities and the importance of these organisms in ecosystem processes. In addition, this pioneering research will facilitate ....Understanding fungal diversity and functioning in forest soils using molecular and stable isotope approaches. The project aims to investigate fungal community structure and functioning in forest soils using novel molecular, stable isotope and physiological approaches. This will provide new insights into the linkage between diversity and functioning in forest soil fungal communities and the importance of these organisms in ecosystem processes. In addition, this pioneering research will facilitate development and refinement of methodologies that will pave the way for future investigations of fungal ecology. The on-going collaboration will produce high quality joint publications and provide significant opportunities for early career researchers to gain international experience in a dynamic research environment.Read moreRead less
Soil physical limitations to growth in sub-tropical hardwood plantations. Large areas of eucalypt plantations are being established to replace native forest wood production in many areas of Australia. A major impediment facing the industry in subtropical eastern Australia is inappropriate site species matching. This is largely due to lack of understanding of the major soil types in the region and the effect on growth of different species. This project will compare site productivity and soil ch ....Soil physical limitations to growth in sub-tropical hardwood plantations. Large areas of eucalypt plantations are being established to replace native forest wood production in many areas of Australia. A major impediment facing the industry in subtropical eastern Australia is inappropriate site species matching. This is largely due to lack of understanding of the major soil types in the region and the effect on growth of different species. This project will compare site productivity and soil characteristics in two major hardwood species and investigate fundamental relationships between soil characteristics and tree root growth. The outcome will be a mechanistic understanding of soil physical limitations to tree growth.Read moreRead less
Integrating human operators into large-scale sensor networks. Information awareness is critical in many applications of national importance: from bush fire fighting and defence to transportation and health care. These applications involve tasks in which timely delivery and fusion of heterogeneous information streams is of critical importance. They can all benefit from the use of robotic and embedded sensor networks considered in this project. Human operators, acting as users or supervisors, will ....Integrating human operators into large-scale sensor networks. Information awareness is critical in many applications of national importance: from bush fire fighting and defence to transportation and health care. These applications involve tasks in which timely delivery and fusion of heterogeneous information streams is of critical importance. They can all benefit from the use of robotic and embedded sensor networks considered in this project. Human operators, acting as users or supervisors, will remain at the centre of these systems. The technology and algorithms developed in this project will efficiently structure information exchange between humans and sensor networks. Establishing Australian leadership in this fast-evolving high-technology field will spur growth and job creation.Read moreRead less
The Sustainable Effluent Irrigation Project - Effects of effluent irrigation on soil sodicity and groundwater quality. The land application of recycled municipal effluent is now regularly practised by a number of local authorities and agencies responsible for centralised collection of wastewater, its treatment and disposal. Treated municipal effluent is often land applied and used to grow hardwood plantations. Hardwood plantations are very effective in producing large amounts of biomass and also ....The Sustainable Effluent Irrigation Project - Effects of effluent irrigation on soil sodicity and groundwater quality. The land application of recycled municipal effluent is now regularly practised by a number of local authorities and agencies responsible for centralised collection of wastewater, its treatment and disposal. Treated municipal effluent is often land applied and used to grow hardwood plantations. Hardwood plantations are very effective in producing large amounts of biomass and also assist agencies in off-setting wastewater treatment and disposal costs associated with advanced wastewater treatment to remove nutrients. This project will examine the effects of effluent irrigation on soil chemistry and groundwater quality at two hardwood plantations in the Hunter Valley, NSW. It is increasingly clear that large-scale reuse schemes, particularly those involving hardwood plantations, must be designed to be sustainable and have no significant impact on soil chemistry (increasing sodicity) and groundwater. This project will develop irrigation regimes for hardwood plantations which will promote soil productivity and optimize effluent application rates for pollutant removal and biomass production.
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Future climate change: consequences for decomposition and pathways of carbon flow through rhizosphere fungal communities. The proposed collaboration will provide novel insights into likely consequences of global climate change on decomposition and pathways of carbon flow through forest soils. This will refine predictive models of future climate change and its impacts on the sustainability of Australia's forests. It will also enhance the protection of our valued habitats and their important soil ....Future climate change: consequences for decomposition and pathways of carbon flow through rhizosphere fungal communities. The proposed collaboration will provide novel insights into likely consequences of global climate change on decomposition and pathways of carbon flow through forest soils. This will refine predictive models of future climate change and its impacts on the sustainability of Australia's forests. It will also enhance the protection of our valued habitats and their important soil biodiversity. The knowledge gained will help land managers to adapt current practices to meet the demands of future climate change. This will maximize the opportunities for sequestering carbon in Australia's forests and so contribute to meeting Australia's global responsibility for mitigation of climate change.Read moreRead less