Refining Restoration Ecology: Is Range of Historical Variability an appropriate concept to guide ecosystem management and restoration? Ecosystem restoration is an urgent task in many Australian landscapes. Range of Historical Variability (RHV) theory provides an influential but largely untested framework to guide restoration activities. We will test the RHV proposition that biodiversity conservation is enhanced if the structure of altered ecosystems is restored within the pre-settlement range. P ....Refining Restoration Ecology: Is Range of Historical Variability an appropriate concept to guide ecosystem management and restoration? Ecosystem restoration is an urgent task in many Australian landscapes. Range of Historical Variability (RHV) theory provides an influential but largely untested framework to guide restoration activities. We will test the RHV proposition that biodiversity conservation is enhanced if the structure of altered ecosystems is restored within the pre-settlement range. Plants, vertebrates and invertebrates will be compared between ?unrestored? Callitris woodlands dominated by post-settlement regrowth, and ?restored? stands where regrowth has been reduced within the RHV. This will be the first test of RHV theory to encompass a range of taxonomic and functional groups at both local and landscape scales.Read moreRead less
Fire severity, habitat heterogeneity and life histories. Resolving the persistence ability of plants in frequently fired landscapes. The wise management of Australia's biodiversity has major economic and social benefits for the nation through the provision of ecosystem services, bio-products and tourism. Fire is a pivotal environmental factor that will continue to influence plant biodiversity in fire-prone ecosystems. Inappropriate fire regimes, however, threaten biodiversity through disruption ....Fire severity, habitat heterogeneity and life histories. Resolving the persistence ability of plants in frequently fired landscapes. The wise management of Australia's biodiversity has major economic and social benefits for the nation through the provision of ecosystem services, bio-products and tourism. Fire is a pivotal environmental factor that will continue to influence plant biodiversity in fire-prone ecosystems. Inappropriate fire regimes, however, threaten biodiversity through disruption of life cycles. If too many or too few fires occur in an area this can lead to decline and extinction of plant and animal species. This research will provide a risk-assessment tool for the management of biodiversity to reverse population declines and prevent extinctions.
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Managing tree densities in western New South Wales: development of a process-based model to predict woodland dynamics. This project will enhance woodland management in inland NSW by: (1) advancing our understanding of factors controlling woodland dynamics and (2) refining predictions of the effects of landuse scenarios on long-term vegetation dynamics. Outcomes will assist policy development and on-ground decision making by natural resource managers. Results will be used by managers of biodivers ....Managing tree densities in western New South Wales: development of a process-based model to predict woodland dynamics. This project will enhance woodland management in inland NSW by: (1) advancing our understanding of factors controlling woodland dynamics and (2) refining predictions of the effects of landuse scenarios on long-term vegetation dynamics. Outcomes will assist policy development and on-ground decision making by natural resource managers. Results will be used by managers of biodiversity, salinity, erosion, tree clearing, silviculture, rehabilitation and protected areas. Our findings will reduce conflicting perceptions about past and future vegetation changes in regional areas, thereby advancing uptake of sustainability plans to ensure long-term social, economic and environmental benefits for an environmentally sustainable Australia.Read moreRead less
Mistletoe as a keystone resource---an experimental test. My recent synthesis of known interactions between animals and mistletoe suggests that mistletoe functions as a keystone resource, influencing diversity patterns in forested ecosystems worldwide. This project tests the keystone hypothesis explicitly for woodland communities using landscape-scale manipulation. In 40 woodland remnants, all mistletoes will be removed from 20, with subsequent seasonal censuses of woodland birds, arboreal mars ....Mistletoe as a keystone resource---an experimental test. My recent synthesis of known interactions between animals and mistletoe suggests that mistletoe functions as a keystone resource, influencing diversity patterns in forested ecosystems worldwide. This project tests the keystone hypothesis explicitly for woodland communities using landscape-scale manipulation. In 40 woodland remnants, all mistletoes will be removed from 20, with subsequent seasonal censuses of woodland birds, arboreal marsupials and butterflies. Incorporating data on spatial and temporal variation in fruit, nectar and arthropod availability, this study represents a model system for understanding the ecosystem-wide role of ecological keystones and the influence of resource distribution on diversity patterns in fragmented habitats generally.Read moreRead less
Novel experimental and longitudinal analyses to promote woodland biota. Novel experimental and longitudinal analyses to promote woodland biota. This project aims to close important scientific and practical application gaps around the most effective ways to restore and manage vegetation on farms. Although restoration programs to increase native vegetation cover are essential for integrating agricultural production with biodiversity conservation, critical scientific questions remain about how biot ....Novel experimental and longitudinal analyses to promote woodland biota. Novel experimental and longitudinal analyses to promote woodland biota. This project aims to close important scientific and practical application gaps around the most effective ways to restore and manage vegetation on farms. Although restoration programs to increase native vegetation cover are essential for integrating agricultural production with biodiversity conservation, critical scientific questions remain about how biota responds to temporal increases in vegetation cover. This project will combine novel spatiotemporal analyses of long-term datasets and a blocked and replicated experiment comparing planting strategies that connect woodland patches vs augmentation strategies that increase individual patch size. Anticipated outcomes are better designed and implemented restorations to maximise benefits for biota.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE170101466
Funder
Australian Research Council
Funding Amount
$372,000.00
Summary
Can Indigenous land management forestall an extinction crisis? This project aims to test the theory that a lack of Indigenous land management precipitated the collapse of Australia's mammal fauna. Current rates of species extinction exceed background rates by 100-1000 times, because of changes to ecosystems by humans. Paradoxically, Australia’s most pressing extinction crisis could be due to too little human disturbance. This project will test Indigenous land management’s capacity to forestall f ....Can Indigenous land management forestall an extinction crisis? This project aims to test the theory that a lack of Indigenous land management precipitated the collapse of Australia's mammal fauna. Current rates of species extinction exceed background rates by 100-1000 times, because of changes to ecosystems by humans. Paradoxically, Australia’s most pressing extinction crisis could be due to too little human disturbance. This project will test Indigenous land management’s capacity to forestall further mammal declines and restore degraded ecosystems, and enhance Indigenous livelihoods. Anticipated outcomes include on-ground principles for integrating Indigenous knowledge into biodiversity conservation, and transformative insights on the interdependence of humans and their environment.Read moreRead less
Integrating the rice industry with biodiversity conservation: the spatial ecology of waterfowl in agricultural and natural landscapes. Waterfowl damage to rice crops is a significant problem for the rice industry worldwide. The management and conservation of waterfowl requires an explicit understanding of the effect of rice bays on habitat structure for waterfowl and how these interact with population processes operating at broad scales. This project will analyse the spatial ecology of waterfowl ....Integrating the rice industry with biodiversity conservation: the spatial ecology of waterfowl in agricultural and natural landscapes. Waterfowl damage to rice crops is a significant problem for the rice industry worldwide. The management and conservation of waterfowl requires an explicit understanding of the effect of rice bays on habitat structure for waterfowl and how these interact with population processes operating at broad scales. This project will analyse the spatial ecology of waterfowl in agricultural and natural landscapes in the Murray-Darling Basin. Specifically we will (1) track waterfowl, (2) analyse wetland distribution at fine and broad scales, (3) develop spatial models to describe the relationships between waterfowl movements and wetland distribution, including rice bays, and (4) develop models of agronomic risk based on landscape structure and the known responses of waterfowl.Read moreRead less
Conserving and recovering the koala populations on NSW Far North Coast. Conserving and recovering the koala populations on NSW Far North Coast. This project aims to develop a novel, integrated socio-ecological approach for connecting landscapes and communities for the recovery of threatened koala populations on the New South Wales far north coast. This should increase understanding of how local landholders and land managers respond to koala recovery programs and why they respond positively and b ....Conserving and recovering the koala populations on NSW Far North Coast. Conserving and recovering the koala populations on NSW Far North Coast. This project aims to develop a novel, integrated socio-ecological approach for connecting landscapes and communities for the recovery of threatened koala populations on the New South Wales far north coast. This should increase understanding of how local landholders and land managers respond to koala recovery programs and why they respond positively and become engaged for the long-term. The intended outcome is a spatial prioritisation framework for species recovery that integrates social and ecological values, and increased global knowledge of how to recover declining wildlife populations.Read moreRead less
Why isn’t the world full of mistletoe? An integrative approach to understanding dispersal, recruitment and distribution of parasitic plants. Parasitic plants are less affected by resource constraints than other plants, but they are characteristically rare in undisturbed habitats?an apparent paradox that challenges current thinking about ecological constraints. To determine which factors limit recruitment and distribution of parasitic plants, we will conduct integrative research on two mistleto ....Why isn’t the world full of mistletoe? An integrative approach to understanding dispersal, recruitment and distribution of parasitic plants. Parasitic plants are less affected by resource constraints than other plants, but they are characteristically rare in undisturbed habitats?an apparent paradox that challenges current thinking about ecological constraints. To determine which factors limit recruitment and distribution of parasitic plants, we will conduct integrative research on two mistletoes and a sandalwood in a structurally simple semi-arid shrubland, combining experimental germination trials and chemical analyses of hosts with ecological studies of seed vectors in a spatially-explicit framework. This study will also yield powerful insights into the general mechanisms underlying the relationships between life-history traits, species distributions and resource availability in dynamic landscapes.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE200101226
Funder
Australian Research Council
Funding Amount
$426,071.00
Summary
Success and the city: biodiversity responses in urban environments. This project aims to quantify the species traits and environmental conditions that enable wildlife to persist in an increasingly urbanised world. Through developing and testing a framework linking unprecedented urban expansion and biodiversity change, this project will identify favourable conditions that support biodiversity in the face of global urbanisation. Project outcomes will inform appropriate real-world management action ....Success and the city: biodiversity responses in urban environments. This project aims to quantify the species traits and environmental conditions that enable wildlife to persist in an increasingly urbanised world. Through developing and testing a framework linking unprecedented urban expansion and biodiversity change, this project will identify favourable conditions that support biodiversity in the face of global urbanisation. Project outcomes will inform appropriate real-world management actions and equip scientists, policy-makers and planners with tools to forecast the persistence of biodiversity in Australian cities. By discovering the attributes species need to survive city life this project will help prevent future catastrophic declines of global biodiversity in our increasingly urbanised world.Read moreRead less