Why conserve genetic variation? Is this misdirected effort or a crucial concern? In attempting to conserve populations of threatened plants, ecosystem managers must prioritise allocation of resources to both immediate and long-term threats, including loss of genetic variation. This study will determine the importance of maintaining existing genetic variation within populations of several species in a major Australian plant group. As well as advancing theory in the area of plant ecological genet ....Why conserve genetic variation? Is this misdirected effort or a crucial concern? In attempting to conserve populations of threatened plants, ecosystem managers must prioritise allocation of resources to both immediate and long-term threats, including loss of genetic variation. This study will determine the importance of maintaining existing genetic variation within populations of several species in a major Australian plant group. As well as advancing theory in the area of plant ecological genetics and evolutionary biology, our results will provide a stronger scientific basis for the development of conservation policy and management decisions for conserving threatened plant species. Read moreRead less
Managing the evolutionary potential of fragmented native plant populations. Many previously widespread plant species now exist in small fragmented populations threatened with extinction due to genetic decline. We will apply a novel and powerful new genetic approach for the assessment of the evolutionary potential of these populations. Through the most detailed characterisation of realized mating yet possible, we will determine if recently fragmented populations are in genetic decline, and how ....Managing the evolutionary potential of fragmented native plant populations. Many previously widespread plant species now exist in small fragmented populations threatened with extinction due to genetic decline. We will apply a novel and powerful new genetic approach for the assessment of the evolutionary potential of these populations. Through the most detailed characterisation of realized mating yet possible, we will determine if recently fragmented populations are in genetic decline, and how anciently fragmented species avoid extinction. Our aim is to generate general principles for the early measurement and/or prediction of genetic decline in species most at risk, that will enable us to determine how and when remediation measures are required.Read moreRead less
Fire, bees and other disturbances: the basis for variation in genetic diversity in long-lived plants. An understanding of processes generating temporal and spatial patterns of genetic diversity in perennial plants must underpin successful conservation. Our long-term study will exploit systems in the family Proteaceae in which we have completed foundation studies. We will develop and extend molecular techniques to measure (i) genetic changes from seed to adult, (ii) gene flow by different pollina ....Fire, bees and other disturbances: the basis for variation in genetic diversity in long-lived plants. An understanding of processes generating temporal and spatial patterns of genetic diversity in perennial plants must underpin successful conservation. Our long-term study will exploit systems in the family Proteaceae in which we have completed foundation studies. We will develop and extend molecular techniques to measure (i) genetic changes from seed to adult, (ii) gene flow by different pollinator classes, and (iii) genetic contamination by foreign gene pools, in systems affected by introduced pollinators and natural and cultivar hybridization. Most importantly, we will use fire as an accelerant of generational change and test fitness consequences of changes in genotypic diversity.Read moreRead less
Testing the costs and benefits of gene flow. The mixing of individuals from different populations has traditionally been viewed as beneficial because it maintains genetic variation and offsets the deleterious effects of inbreeding. However, this practice can also have detrimental effects on the fitness of populations. In this project field and laboratory experiments will test whether the benefits gained by mixing of individuals from different populations outweigh the costs or vice versa. In add ....Testing the costs and benefits of gene flow. The mixing of individuals from different populations has traditionally been viewed as beneficial because it maintains genetic variation and offsets the deleterious effects of inbreeding. However, this practice can also have detrimental effects on the fitness of populations. In this project field and laboratory experiments will test whether the benefits gained by mixing of individuals from different populations outweigh the costs or vice versa. In addition to providing information essential for the management of endangered species, the results will provide valuable insights on the processes that determine species' ranges and how new species evolve.Read moreRead less
Metapopulation and habitat quality: towards an integrated approach to the conservation of an endangered grassland lizard. Our research will provide the basis upon which the grassland earless dragon can be removed from its endangered status and provide a template for the future science based management of other endangered species. Australia will gain through this project by reducing its risk of losing yet another species through inappropriate management.
The effects of habitat fragmentation on the dispersal behaviour of a rainforest restricted bird, the logrunner. Dispersal is thought to be critical for the persistence of small avian populations in fragmented landscapes. However, our knowledge of avian dispersal behaviour is limited. I will combine behavioural observations on radiotagged birds and powerful genetic markers to examine the effects of habitat fragmentation on the dispersal behaviour of a rainforest restricted bird, the logrunner. ....The effects of habitat fragmentation on the dispersal behaviour of a rainforest restricted bird, the logrunner. Dispersal is thought to be critical for the persistence of small avian populations in fragmented landscapes. However, our knowledge of avian dispersal behaviour is limited. I will combine behavioural observations on radiotagged birds and powerful genetic markers to examine the effects of habitat fragmentation on the dispersal behaviour of a rainforest restricted bird, the logrunner. This study will determine how landscape structure influences the movement of juvenile logrunners, investigate the causes and consequences of variation in dispersal behaviour, and use genetic data to test predictions about connectivity between populations made using behavioural observations on dispersal.Read moreRead less
Conservation genetics and socio-ecology of marsupials in fragmented populations of south-eastern South Australia: towards a regional biodiversity management plan. Habitat destruction and fragmentation is causing the decline of many species in native forests of eastern and southern Australia. Our project will investigate the interplay between the human activities of agriculture and forestry and their effects on native forest ecosystems. It will provide new data on the consequences of fragmentati ....Conservation genetics and socio-ecology of marsupials in fragmented populations of south-eastern South Australia: towards a regional biodiversity management plan. Habitat destruction and fragmentation is causing the decline of many species in native forests of eastern and southern Australia. Our project will investigate the interplay between the human activities of agriculture and forestry and their effects on native forest ecosystems. It will provide new data on the consequences of fragmentation to native mammal species in the rural and regional communities of south-east South Australia and western Victoria. It will establish a strong collaborative partnership between two forestry companies, conservation agencies and university conservation biologists to develop strategies to sustainably manage biodiversity in native forests and conserve populations of rare and threatened native mammals species. Read moreRead less
How to stop a range expansion: A molecular ecological examination of the European starling. This project is a test-case for a new integrated proactive management of invading pest species. The partner industries are responsible for controlling European starling invasions that threaten agriculture and Australia's only internationally-recognised terrestrial biodiversity hotspot. This project combines traditional ecology, novel molecular approaches, and new statistics to establish source populatio ....How to stop a range expansion: A molecular ecological examination of the European starling. This project is a test-case for a new integrated proactive management of invading pest species. The partner industries are responsible for controlling European starling invasions that threaten agriculture and Australia's only internationally-recognised terrestrial biodiversity hotspot. This project combines traditional ecology, novel molecular approaches, and new statistics to establish source population(s), and disperser characteristics. This will enable a focused control effort, and training of a graduate student and partner industries in this approach. This project is of great significance to rural Australia, and falls within several research priority areas: protection from pests (RP4, PG2) and an environmentally sustainable Australia (RP1, PG2,3).Read moreRead less
Conserving species in human-modified landscapes: incorporating spatial population processes. Many regions of Australia are experiencing rapid population growth and urban expansion and these are predominantly located in areas that are rich in biodiversity. Therefore, conserving biodiversity in these regions is critical for the conservation of Australia's unique flora and fauna. This project will make a major national contribution to this by developing new conservation planning tools to conserve b ....Conserving species in human-modified landscapes: incorporating spatial population processes. Many regions of Australia are experiencing rapid population growth and urban expansion and these are predominantly located in areas that are rich in biodiversity. Therefore, conserving biodiversity in these regions is critical for the conservation of Australia's unique flora and fauna. This project will make a major national contribution to this by developing new conservation planning tools to conserve biodiversity in areas where people live and work. This will have substantial benefits for achieving environmentally sustainable development in Australia, maintaining quality of life in urban areas, and sustaining Australia's important nature-based tourism industry.Read moreRead less
Rapid delineation of genetic provenance for rehabilitation and revegetation of native plant communities. The rehabilitation and/or revegetation of degraded, remnant or post-mining bushland is an increasingly important activity. Data and general principles for the delineation of genetic provenance are urgently required for effective rehabilitation, as well as for the conservation of genetic diversity. We will apply a new and powerful genetic technique for the rapid delineation of provenance in ....Rapid delineation of genetic provenance for rehabilitation and revegetation of native plant communities. The rehabilitation and/or revegetation of degraded, remnant or post-mining bushland is an increasingly important activity. Data and general principles for the delineation of genetic provenance are urgently required for effective rehabilitation, as well as for the conservation of genetic diversity. We will apply a new and powerful genetic technique for the rapid delineation of provenance in over 30 native plant species in south west Australia. Our aim is to generate provenance guidelines and principles, as well as provenance data for the most important species for bushland rehabilitation, which will be produced for rehabilitation practitioners through a "provenance atlas" book.Read moreRead less