Extrinsic threats and biological predisposition in animal extinction and rediscovery. A global extinction crisis looms, and Australia has a shocking record, especially of mammal extinctions. The results of this project to find how different threats affect each species will lead to management that focusses on species- and region-specific causes. This will help to prevent further extinctions of Australian mammals and other fauna. Many people hope that species of particular importance to us such as ....Extrinsic threats and biological predisposition in animal extinction and rediscovery. A global extinction crisis looms, and Australia has a shocking record, especially of mammal extinctions. The results of this project to find how different threats affect each species will lead to management that focusses on species- and region-specific causes. This will help to prevent further extinctions of Australian mammals and other fauna. Many people hope that species of particular importance to us such as the thylacine have defied extinction, and will be rediscovered. This project will test which predictive factors can increase the chance of species rediscovery, and help management agencies plan for the expected number of future rediscoveries.Read moreRead less
Improving the Accuracy and Intelligibility of Decisions for Conservation using the Informed Regulator Rule. Standard conservation biology uses some obsolete statistical and experimental design methods that may damage conservation biology, the environment and the economy. This project intends to refine and test a methodology (the Informed Regulator Rule) to improve the quality and transparency of conservation studies, compliance monitoring and auditing. Building on research in the psychology of ....Improving the Accuracy and Intelligibility of Decisions for Conservation using the Informed Regulator Rule. Standard conservation biology uses some obsolete statistical and experimental design methods that may damage conservation biology, the environment and the economy. This project intends to refine and test a methodology (the Informed Regulator Rule) to improve the quality and transparency of conservation studies, compliance monitoring and auditing. Building on research in the psychology of statistical (mis)understanding, the project will test the Informed Regulator Rule by computer simulation and empirical tests of impact scenarios with emphasis on data from recent studies. The cognitive accessibility and utility of the rule will be assessed theoretically and in practice.Read moreRead less
Landscape Fragmentation and Rare Plant Species: Can We Develop a General Framework of Population Responses? The project aims to categorise threatened plant taxa on the basis of functional attributes, and choose taxa for detailed investigation on the basis of their distribution across the landscape and potential to deliver quantitative data. Models will then be developed for each functional group of how rates of pollination, seed production, genetic diversity and seed fitness are affected by popu ....Landscape Fragmentation and Rare Plant Species: Can We Develop a General Framework of Population Responses? The project aims to categorise threatened plant taxa on the basis of functional attributes, and choose taxa for detailed investigation on the basis of their distribution across the landscape and potential to deliver quantitative data. Models will then be developed for each functional group of how rates of pollination, seed production, genetic diversity and seed fitness are affected by population size and landscape context. Information from models for each functional group will then be extrapolated, where possible, to other taxa in that group to provide guidelines for flora conservation, including translocations, threatened ecological communities and restoration / revegetation programs.Read moreRead less
Minimum sizes and habitat areas for viable populations. This project will address two critical issues in conservation biology: How large do wildlife populations need to be to ensure long-term persistence? How large an area needs to be preserved? At present, no such estimates exist for most species. I will develop realistic population viability analysis (PVA) models (encompassing all threats to persistence) on many bird, mammal, reptile, amphibian, invertebrate and plant species, and estimate the ....Minimum sizes and habitat areas for viable populations. This project will address two critical issues in conservation biology: How large do wildlife populations need to be to ensure long-term persistence? How large an area needs to be preserved? At present, no such estimates exist for most species. I will develop realistic population viability analysis (PVA) models (encompassing all threats to persistence) on many bird, mammal, reptile, amphibian, invertebrate and plant species, and estimate the minimum population sizes and habitat areas required for long-term survival. My prior research has validated the predictive accuracy of PVA. This research will deliver practical guidelines for managing threatened species.Read moreRead less
Climate change and phenotypic divergence at a landscape scale. Birds provide key ecosystem functions like pollination, insect control, and seed dispersal in Australia. Climate change is well documented and has a pronounced effect on birds, commonly leading to range shifts. This study will quantify patterns of gene flow at a landscape scale in declining and common birds in Australia and abroad. The project builds on strong international links to the Galapagos Islands as well as a regional focus f ....Climate change and phenotypic divergence at a landscape scale. Birds provide key ecosystem functions like pollination, insect control, and seed dispersal in Australia. Climate change is well documented and has a pronounced effect on birds, commonly leading to range shifts. This study will quantify patterns of gene flow at a landscape scale in declining and common birds in Australia and abroad. The project builds on strong international links to the Galapagos Islands as well as a regional focus for South Australia. The linkage organisations are committed to implementing management outcomes for native flora and fauna, which need to be underpinned with quality baseline data. The outcomes will also inform climate modelling for the State and Australia. Read moreRead less
Are frogs in fragmented lowland rainforest especially susceptible to both disease and climate change? On a world scale, amphibian declines have been especially severe in Australia. Major causes of amphibian declines here are disease and habitat destruction. Our project will significantly advance our knowledge of frogs in coastal lowland rainforest. These frogs are a key to understanding the evolution of disease resistance to the amphibian disease fungus, and they are also likely to experience ....Are frogs in fragmented lowland rainforest especially susceptible to both disease and climate change? On a world scale, amphibian declines have been especially severe in Australia. Major causes of amphibian declines here are disease and habitat destruction. Our project will significantly advance our knowledge of frogs in coastal lowland rainforest. These frogs are a key to understanding the evolution of disease resistance to the amphibian disease fungus, and they are also likely to experience severe impacts from climate change. Thus, studies in this region will allow us to better understand the mechanisms responsible for frog declines in Australia. Also, this project will be useful to industries constructing infrastructure in rainforest, allowing an assessment of the impacts of works on already stressed frog populations. Read moreRead less
Population genetics and dynamics of orchids and their pollinators in fragmented landscapes of South Australia. Many species of orchids in fragmented landscapes need active management to secure their persistence. The effects of fragmentation can be direct (e.g. reduction in population sizes, environmental quality, increased inbreeding, reduced dispersal ability), or indirect through negative effects on pollinators. Little information exists on the complex interactions between effects of fragmenta ....Population genetics and dynamics of orchids and their pollinators in fragmented landscapes of South Australia. Many species of orchids in fragmented landscapes need active management to secure their persistence. The effects of fragmentation can be direct (e.g. reduction in population sizes, environmental quality, increased inbreeding, reduced dispersal ability), or indirect through negative effects on pollinators. Little information exists on the complex interactions between effects of fragmentation on plants and their pollinators. This project aims to understand how fragmentation affects the genetic diversity and demography of selected populations of orchids and their pollinators in the Mt.Lofty/Flerieu Peninsula area. This information will help to develop and implement more effective conservation plans.Read moreRead less
Life history responses to habitat heterogeneity and implications for conservation. This exciting new research project will provide a novel understanding of how animals respond and adapt to environmental variation. This will fill a critical gap between ecological theory and real-world populations and initiate a major shift in how we view the relationship between environments and the species that inhabit them. Natural resource use practices like forestry are rarely considered compatible with biodi ....Life history responses to habitat heterogeneity and implications for conservation. This exciting new research project will provide a novel understanding of how animals respond and adapt to environmental variation. This will fill a critical gap between ecological theory and real-world populations and initiate a major shift in how we view the relationship between environments and the species that inhabit them. Natural resource use practices like forestry are rarely considered compatible with biodiversity conservation. This research will provide on-the-ground management recommendations to integrate such land uses with conservation, thereby providing both economic and conservation benefits to the Australian community.Read moreRead less
The regeneration niche of invasive plants: managing the weed-shaped hole. In Australia $20 million was spent on weed control in natural areas in 2001-02 and is indicative of the level of funding for weed control programs each year. An understanding of how current weed control programs affect the regeneration of weeds in the system will give us novel insights into the persistence of weed populations despite sustained investment in control. Environmental weeds threaten biodiversity and ecosystem ....The regeneration niche of invasive plants: managing the weed-shaped hole. In Australia $20 million was spent on weed control in natural areas in 2001-02 and is indicative of the level of funding for weed control programs each year. An understanding of how current weed control programs affect the regeneration of weeds in the system will give us novel insights into the persistence of weed populations despite sustained investment in control. Environmental weeds threaten biodiversity and ecosystem function in unique Australian communities, better management of weeds will have conservation, ecosystem service provision and amenity values nationally. This project highlights the importance of understanding the weed regeneration niche for successful long-term and sustainable control.Read moreRead less
BEYOND ABUNDANCE: HOW TOP PREDATORS AFFECT MESOPREDATOR BEHAVIOUR AND LIFE HISTORY. Top predators strongly influence biodiversity. Areas with high biodiversity attract tourism income and provide valuable ecosystem services. In Australia, high biodiversity, and the opportunity to view top predators, increase the experience quality of tourists, and increase the probability that they will visit an area, but Australia has many highly fragmented ecosystems, which lose top predators. Disappearance of ....BEYOND ABUNDANCE: HOW TOP PREDATORS AFFECT MESOPREDATOR BEHAVIOUR AND LIFE HISTORY. Top predators strongly influence biodiversity. Areas with high biodiversity attract tourism income and provide valuable ecosystem services. In Australia, high biodiversity, and the opportunity to view top predators, increase the experience quality of tourists, and increase the probability that they will visit an area, but Australia has many highly fragmented ecosystems, which lose top predators. Disappearance of top predators can lead to expanding populations of mid-level predators, and concomitant losses of biodiversity. In Australia, where lizards are major top- and mid-level predators in terrestrial systems, our study will directly address the consequences of predator disappearance, and provide management strategies to deal with it.Read moreRead less