Rozprawy doktorskie na temat „Australian Alps”

In this thesis I examine the population ecology of wild horses (Equus caballus) in the Australian Alps. Wild horses were first introduced into the Alps over 150 years ago. Paradoxically, they are a feral animal impacting on the environment, but are also a cultural icon. Managing wild horse populations is contentious and needs to be founded on knowledge of their population ecology. This is the first study of its kind in the Australian Alps and therefore has a broad focus. Four general areas were addressed: distribution, estimation of abundance and density, population dynamics and the influence of brumby-running. The study was conducted between 1999 and 2002 inclusive in the Australian Alps national parks, which form a contiguous protected area in south-eastern Australia from the Australian Capital Territory (ACT) in the north, through New South Wales (NSW) and into Victoria in the south. The current distribution of wild horses in the Australian Alps national parks is patchy. There are five major discrete populations in NSW and Victoria with the northern most population in Kosciuszko National Park (NSW) bordering on the ACT. A review of published material and oral history reveals historic influences on distribution. The presence of each population is associated with introductions by people. The distribution of some populations expanded after introductions and many have fluctuated over time. Distributions have been contained or reduced through control by people, natural events such as snow and drought and by geographical barriers. Park managers eliminated a population of wild horses in the ACT in the 1980s. Distributions have expanded in areas without active management (notably northern Kosciuszko National Park) and are likely to continue expanding under a policy of no management. In February and March 2001, abundance and density of wild horses were estimated by helicopter aerial survey in areas where the mapping showed horses to occur. This was the first time that these parameters have been estimated empirically. I compared three different aerial survey techniques (strip, mark-recapture and line transect) based on relative accuracy and precision and found that line transect analysis gave the highest, most precise estimate. Given that aerial surveys usually underestimate abundance, this method was also likely to be the most accurate. Mark-recapture over a 50m wide strip gave a similar result but lacked precision. Strip and mark-recapture techniques performed poorly over 200m strips because animals were missed. Numbers observed dropped off dramatically beyond the 50m strip. Line transect analysis (for both observers combined) gave an estimate of 5010 (+/- 1408SE) horses while mark recapture over 50 metres gave an estimate of 4915 (+/-2733SE). These estimates correspond to a density of 1.8 horses km-2 over the area surveyed (2789km2). The results suggest that aerial surveys of large mammals using a wide strip width (200m) and mark recapture analysis may seriously underestimate population density. The population dynamics and demography of wild horses were estimated at three sites, Big Boggy, Cowombat and Currango, every spring and autumn over 3 years. The sites were spread widely across the Alps with the aim of obtaining a broad understanding of population dynamics. The survey used Pollock�s robust design and natural markings were used to identify individuals. There was a seasonal spring peak in population size at Big Boggy with no clear seasonal trend at the other two sites. Mean wild horse densities determined at Big Boggy (2.01km-2) and Currango (2.13km-2) were not significantly (p<0.5) different to the density calculated in the aerial survey, whereas density was significantly higher at Cowombat (6.4 km-2). Census techniques were of limited use in estimating annual population growth rate because of low precision. Demographic analysis showed that none of the populations were increasing at the maximum intrinsic rate (l = 1.2), and the Big Boggy and Cowombat populations may be stable (l = 1.0/yr). There was an apparent trend of food limitation across the sites. Body condition was positively related (p<0.01) to pasture biomass. The Currango population was increasing (l = 0.09) associated with higher recruitment, body condition and pasture biomass than in the other two populations studied. The Cowombat population had the lowest annual finite rate of increase (l = 1.03), and horses at this site were in the poorest condition and pasture biomass was lowest. The Big Boggy population was intermediate between the two. Annual adult survival was constant in all populations at 0.91. Survival in the first three years of life was more variable with the average at each site ranging from 0.63/yr to 0.76/yr. An average of 0.26 female foals was born per adult female per year. Sensitivity analysis showed that population growth rate is most sensitive to changes in adult survival, followed by fecundity and then survival in the first three years of life. The dynamics observed at each site was representative of the demography of wild horses in other parts of the world and is typical for large mammalian herbivores. Brumby-running is a form of harvesting that is currently being used to control wild horses in the Alpine National Park (Victoria) and is soon to be trialled in Kosciuszko National Park (NSW). The effectiveness of brumby-running has not been assessed prior to this study. Data collected by the Alpine Brumby Management Association and predictive modelling were used to examine the influence of brumby-running on the wild horse population in Alpine National Park. Brumby-runners remove about 200 horses per year with a preference for young animals and adult females. More horses are caught in autumn (61/yr) and least in summer (30/yr) (p<0.05). Brumby-runners do not appear (p>0.05) to target horses in poor condition. One skilled brumby-runner caught an average of 1.16 horses/day, while his companions caught an average of 0.55 horses/day. Brumby-runners show behaviour analogous to social carnivores. Predictive modelling suggests that brumby-runners could suppress the population of wild horses in Alpine National Park similar to the effects of predators, or human harvesting of other large mammals. Selecting young animals in the harvest reduces the impact of harvesting on the population compared to unselective harvesting, while selecting adult females increases the predicted impact. There are several management recommendations based on the findings of this thesis that address concerns for both environmental impact and the cultural value of wild horses. The distribution of wild horses should not be allowed to expand further, and the size of the wild horse population should be prevented from increasing further. Other management recommendations that are more complex involve reducing some populations so that the level of environmental impact they are causing is acceptable. This requires a definition of �acceptable impact.� Finally managers should consider eradicating smaller populations.

This research investigated carbon dynamics, water dynamics and peat formation at Wellington Plain peatland in the Victorian Alps. The properties of bog peat and dried peat were measured, and the ensuing results are outlined below. The carbon chemistries of both bog peat and dried peat displayed changes with depth consistent with an increase in the extent of decomposition of the organic material. Representative changes in the alkyl:O-alkyl ratio down the profile were 0.14 to 0.96 for bog peat and 0.28 to 1.07 for dried peat. Laboratory incubations on the influence of chemistry, particle size, water content and sample preparation indicated that, in the absence of confounding factors, peat chemistry was the most important factor in determining the size of the mineralisable carbon pool. Water content was the most important factor in determining the rate of carbon mineralization. In the field, both bog peat and dried peat emitted an average of 2 g CO2/m2/d from the surface. Carbon mineralisation was related to both soil temperature and soil water content, and this relationship was used to model peat mineralisation under a range of possible future climate scenarios. Below the surface, however, I measured lower rates of decomposition in the dried peat than in the bog peat. The water-holding capacity of peat was measured in the laboratory, as was the rate of water movement through peat. Specific yield decreased down the profile in both bog peat (0.88 to 0.45 cm3/cm3) and dried peat (0.36 to 0.11 cm3/cm3). Hydraulic conductivity also decreased down the profile in both peats: 5.1x10-4 to 3.0x10-6 m/s in bog peat, and 1.0x10-4 to 7.0x10-6 m/s in dried peat. Relationships between the hydrologic properties of peat and its physical and chemical properties were identified. In the field, fluctuations in the watertable were monitored in concert with rainfall. These laboratory and field measurements enabled me to develop models of the hydrology of bog peat and dried peat. Radioisotope dating indicated that both bog peat and dried peat began forming around 3300 years ago. The bog peat appeared to have drained to form dried peat between 131 and 139 years ago. Since that time, erosion appeared to have contributed more to the loss of organic material from dried peat than carbon mineralisation had.

Thesis (Ph.D.) -- La Trobe University, 2006.
Research. "A thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy, [to the] Centre for Applied Alpine Ecology, Department of Agricultural Sciences, School of Life Sciences, Faculty of Science, Technology and Engineering, La Trobe University, Bundoora". Includes bibliographical references (leaves 172-186). Also available via the World Wide Web.

Exotic plants are a threat to natural areas world wide including the Australian Alps, one of the largest relatively undisturbed natural areas remaining in Australia. This thesis examines the diversity, abundance and distribution of exotic plants in the Australian Alps, including Kosciuszko National Park and then focuses on Achillea millefolium (L.) (Asteraceae) as a case study of the biology and ecology of an important environmental weed. To determine the diversity and abundance of exotics in the Australian Alps published records of exotic species were reviewed. A total of 175 exotic taxa were recorded in the alpine and subalpine areas representing 41 families and 122 genera. The distribution of exotics was associated with human activities with 80% of exotic taxa found along roads and tracks and nearly 60% around ski resorts. Just over 20% of exotic species were naturalised with some species presenting an environmental threat to the region. To examine the relationship between human disturbance and exotics, vegetation was surveyed and soil analysed on road verges, in runoff areas and in adjacent vegetation along a gravel road in the subalpine zone of Kosciuszko National Park. The road verge was dominated by exotics, the area 10 m from the road verge was dominated by natives and the road drainage areas were dominated by the exotic, A. millefolium. There were also clear differences in the soils, with coarse nutrient poor soils on the road verge, highly organic fine soils in the areas 10 m from the road, and soils with high nutrients and water content in the road drainage areas. The potential for exotics to colonise areas adjacent to roads after disturbance was examined in an experiment conducted along a subalpine road. The composition of plants colonising small gaps created in the existing vegetation (50 cm x 100 cm) was dependant on the distance from the road. In general, gaps one metre from the road verge were recolonised by exotic species while gaps five or ten metres from the road verge were predominantly recolonised by native early succession species. However the exotics A. millefolium and Acetosella vulgaris were present in many sites prior to disturbance, and were the major exotics to recolonise gaps five and ten metres from the road. Therefore disturbance of natural areas where there are exotic propagules present may not necessarily result in a native climax community, but in a community with an even higher cover of exotics than prior to disturbance. These initial studies highlighted the importance of A. millefolium as an environmental weed in the Australian Alps. Therefore further research was carried out on this species. A review of literature highlighted the capacity of this species to colonise and invade both disturbed and natural habitats. Based on current weed risk assessment methodologies this species presents a serious threat to both agricultural and natural environments in Australia. Data on the distribution of A. millefolium was used to develop a CLIMEX® model of its distribution worldwide and in Australia under current and changing climatic conditions. The models indicate that cool, temperate and Mediterranean climates are suitable for this species, while deserts and tropics are unsuitable. Under climate warming scenarios, there would be an overall reduction in the area suitable for A. millefolium, including within Australia, but an increase in suitable sites at higher altitudes. Field and glasshouse experiments were conducted examining the distribution, phenology, resource allocation, seed ecology and competitive abilities of A. millefolium, including any variation in these characteristics associated with increasing altitude. Field surveys and published records of A. millefolium indicate that A. millefolium populations are primarily associated with disturbance, with some limited spread into native vegetation. It occurs along more than 100 km of walking tracks, roads and trails within the Park. Achillea millefolium populations were observed growing between 800 m and 2100 m a.s.l., with the majority of populations occurring in areas above 1200 m a.s.l. The vegetative and flowering phenology studies of A. millefolium confirm that it is able to grow and flower from the tableland to high subalpine with flowering commencing earlier and lasting longer at lower altitude sites. However, even at sites 1760 m altitude, flowering occurred for approximately 80 days with large numbers of inflorescences (19 per m2) at the peak of flowering in early March. The effect of altitude on the allocation of biomass in A. millefolium between above ground, below ground and reproductive structures indicates that with increasing altitude there was a decrease in the relative and absolute allocation of biomass to reproductive structures (average 2.7 kg/m2), although the total number of flower heads was not affected (average 129 flowering heads/inflorescence). There was no effect of altitude on the absolute allocation to below ground (average 3.1 kg/m2) and above ground vegetative structures (average 0.7 kg/m2). The seed ecology of A. millefolium was examined including estimating the potential maximum seed production (51400 seeds/m2), seed rain, and seed viability. There was 60% viability of seed remaining after three years dry storage and 16% viability of seed remaining after three years of burial in the field. All these seed characteristics were highly variable among sites, with either no, or limited effect of increasing altitude. In a glasshouse competition experiment between A. millefolium and the dominant native snowgrass Poa fawcettiae, the weed produced four times as much biomass as the native grass at the end of the 12 week experiment. As a result, when grown together, A. millefolium significantly decreased the root and shoot biomass of P. fawcettiae while P. fawcettiae had no effect on the biomass of A. millefolium. Root interaction from the weed on the grass appeared to be the primary source of competition. Population dynamics modelling using data from this research and from the literature indicated that without human induced control this species has the potential to continue to spread from current populations in subalpine and alpine areas. Therefore a strategy to effectively control this species must include the removal of flowers to decrease the input of seed into the seed bank, limiting the establishment of seedlings and removal of the underground rhizome system. This study has shown that the high altitude areas of the Australian Alps are susceptible to exotic plant invasions. The results also highlight the importance of human induced disturbance in the introduction and distribution of exotics, including the case study species A. millefolium. Increasing severity of conditions with increasing altitude does not appear to be limiting the establishment, growth and reproduction of A. millefolium, even though altitude did affect some components of the ecology of this species in Kosciuszko National Park.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environmental and Applied Science
Full Text

Alpine ecosystems occur above the bioclimatic treeline and support cryophilic plant communities with high endemism, which are governed by low temperatures and short growing seasons. However, the climate of many alpine ecosystems is changing rapidly with warming temperatures, declining snow cover and lengthening growing seasons. Alpine vegetation dynamics in response to changes in climate over recent decades have been observed via long-term ecological monitoring techniques, but such studies are less common in the southern hemisphere including in the marginal alpine ecosystems of the Australian Alps. Therefore, the scale, ecological processes and implications of climate-induced dynamics are less clear for this important ecological, cultural and socioeconomic region. The central aim of this thesis is to understand the responses of vegetation in the largest contiguous alpine area in the Australian Alps, the Kosciuszko alpine area, to climate change over recent decades across varying spatial scales.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environment and Sc
Science, Environment, Engineering and Technology
Full Text

This thesis examined vegetation change over the last 43 years in Australia's largest contiguous alpine area, the Kosciuszko alpine zone in south-eastern Australia. Using historical and current data about the state of the most common vegetation community, tall alpine herbfield, this thesis addressed the questions: (1) what were the patterns of change at the species/genera and life form levels during this time period; (2) what were the patterns of recovery, if recovery occurred, from anthropogenic disturbances such as livestock grazing or trampling by tourists; (3) what impacts did natural disturbances such as drought have on the vegetation and how does it compare to anthropogenic disturbances; and (4) What are the benefits, limitations and management considerations when using long-term data for assessing vegetation changes at the species/genera, life form and community levels? The Kosciuszko alpine zone has important economic, cultural and ecological values. It is of great scientific and biological importance, maintaining an assemblage of vegetation communities found nowhere else in the world. It is one of the few alpine regions in the world with deep loamy soils, and contains endemic flora and fauna and some of the few periglacial and glacial features in Australia. The area also forms the core of the Australian mainland's most important water catchment and is a popular tourist destination, offering a range of recreational opportunities. The vegetation of the Kosciuszko alpine zone is recovering from impacts of livestock grazing and is increasingly exposed to pressures from tourism and anthropogenic climate change. At the same time, natural disturbances such as drought and fire can influence the distribution, composition and diversity of plants. Thus, there is a need for detailed environmental data on this area in order to: (1) better understand ecological relationships; (2) understand existing and potential effects of recreational and management pressures on the region; (3) provide data against which future changes can be assessed; and (4) provide better information on many features of this area, including vegetation, for interpretation, education and management. The research in this thesis utilised three types of ecological information: (1) scientific long-term datasets; (2) photographic records; and (3) a comparison of disturbed and undisturbed vegetation. This research analysed data from one of the longest ongoing monitoring programs in the Australian Alps established by Alec Costin and Dane Wimbush in 1959. Permanent plots (6 transects and 30 photoquadrats) were established at two locations that differed in the time since grazing and have been repeatedly surveyed. Plots near Mt Kosciuszko had not been grazed for 15 years and had nearly complete vegetation cover in 1959, while plots near Mt Gungartan showed extensive impacts of grazing and associated activities which only ceased in 1958. Some transect data from 1959 to 1978 have been analysed by the original researchers. The research presented in this thesis extends this monitoring program with data from additional surveys in 1990, 1999 and 2002 and applies current methods of statistical evaluation, such as ordination techniques, to the whole data set for the first time. Results indicated that the recovery from livestock grazing and the effects of drought have been the main factors affecting vegetation. Recovery from livestock grazing at the three transects at Gungartan was slow and involved: (1) increasing genera diversity; (2) increasing vegetation cover; (3) decreasing amounts of bare ground; and (4) a directional change over time in species composition. Patterns of colonisation and species succession were also documented. In 2002, 44 years after the cessation of grazing, transects near Mt Gungartan had similar vegetation cover and genera diversity to the transects near Mt Kosciuszko, but cover by exposed rock remained higher. A drought in the 1960s resulted in a temporary increase of litter and a shift in the proportional cover of life forms, as grasses died and herb cover increased at both locations. Proportions of cover for life forms reverted to pre-drought levels within a few years. The results also highlighted the spatial variability of tall alpine herbfield. The photoquadrats were surveyed in the years 1959, 1964, 1968, 1978 and 2001 and are analysed for the first time in this thesis. After comparing a range of methods, visual assessment using a 130 point grid was found to be the most suitable technique to measure vegetation cover and genera diversity. At the 18 quadrats near Mt Gungartan, there was a pattern of increasing vegetation cover as bare areas were colonised by native cudweeds and the naturalized herb Acetosella vulgaris. Revegetation from within bare areas largely occurred by herb species, while graminoids and shrub species predominately colonised bare ground by lateral expansion from the edges, eventually replacing the colonising herbs. At the 12 quadrats near Mt Kosciuszko, vegetation cover was almost complete in all years surveyed except 1968, which was at the end of a six year drought. Similar to the results from the transect study, the drought caused an increase in litter at both locations as graminoid cover declined. Initially herb cover increased, potentially as a result of decreased competition from the graminoids and a nutrient spike from decaying litter, but as the drought became more severe, herb cover also declined. Graminoid cover rapidly recovered after the drought, reaching pre-drought levels by 1978, and was at similar levels in 2001. Herb cover continued to decline after peaking in 1964. The photoquadrat study also documented the longevity and growth rates of several species indicating that many taxa may persist for several decades. It further provided insights into replacement patterns amongst life forms. In addition to assessing vegetation change following livestock grazing and drought at the long-term plots, recovery from tourism impacts was examined by comparing vegetation and soils on a closed walking track, with that of adjacent undisturbed tall alpine herbfield at a series of 22 paired quadrats. Fifteen years after the track was closed there was limited success in restoration. Over a quarter of the closed track was still bare ground with non-native species the dominant vegetation. Plant species composition differed and vegetation height, soil nutrients and soil moisture were lower on the track which had a higher compaction level than adjacent natural vegetation. The results presented in this thesis highlight that tall alpine herbfield is characterised by nearly entire vegetation cover which is dominated by graminoids, followed by herbs and shrubs in the absence of disturbance by livestock grazing, trampling or drought. The studies also showed that under quot;average" conditions, the relative cover of herbs and graminoids remained fairly stable even though there can be considerable cycling between them. Spatial variability in terms of taxa composition was high. The only common introduced species in unrehabilitated sites was Acetosella vulgaris, which was effective at colonising bare ground but was eventually replaced by other native species. However, in areas actively rehabilitated, such as on the closed track, non-native species introduced during revegetation efforts still persist with high cover 15 years after their introduction. Monitoring of vegetation change is also important at the landscape scale. This thesis provides a review of the potential use, the limitations and the benefits of aerial photography to examine vegetation change in the Kosciuszko alpine zone. Numerous aerial photography runs have been flown over the area since the 1930s for government agencies, industry and the military. Some of these records have been used to map vegetation communities and eroding areas at a point in time. Other studies compared different types and scales of photographs, highlighting in particular the benefits and potential of large scale colour aerial photography to map alpine vegetation. However, despite their potential to assess vegetation change over time, a temporal comparison of vegetation in the Kosciuszko alpine zone from aerial photographs has not been completed to this date. Historical photographs may not be easy to locate or access and difficulties with vegetation classification may restrict the practicality of using historical aerial photographs to assess vegetation change. Despite these issues, aerial photography may provide a very useful and efficient tool to assess changes over time when applied appropriately, even in alpine environments. The development of digital classification techniques, the application of statistical measures of error to both methodology and data, and the application of geographic information systems are likely to further improve the practicality of historical aerial photographs for the detection of vegetation change and assist in overcoming some of the limitations. The results presented in this thesis highlight the need for limiting disturbance, for ongoing rehabilitation of disturbed areas and for long-term monitoring in the Kosciuszko alpine zone. The results contribute to our understanding of how vegetation may change in the future and may be affected by new land use activities and climate change. This type of information, which otherwise would require the establishment of long-term studies and years of monitoring, can assist land managers of this and other important protected areas. The study highlights how the use and expansion of already existing datasets to gather ecological information can save considerable money and time, providing valuable data for current and emerging issues.

This thesis examined vegetation change over the last 43 years in Australia's largest contiguous alpine area, the Kosciuszko alpine zone in south-eastern Australia. Using historical and current data about the state of the most common vegetation community, tall alpine herbfield, this thesis addressed the questions: (1) what were the patterns of change at the species/genera and life form levels during this time period; (2) what were the patterns of recovery, if recovery occurred, from anthropogenic disturbances such as livestock grazing or trampling by tourists; (3) what impacts did natural disturbances such as drought have on the vegetation and how does it compare to anthropogenic disturbances; and (4) What are the benefits, limitations and management considerations when using long-term data for assessing vegetation changes at the species/genera, life form and community levels? The Kosciuszko alpine zone has important economic, cultural and ecological values. It is of great scientific and biological importance, maintaining an assemblage of vegetation communities found nowhere else in the world. It is one of the few alpine regions in the world with deep loamy soils, and contains endemic flora and fauna and some of the few periglacial and glacial features in Australia. The area also forms the core of the Australian mainland's most important water catchment and is a popular tourist destination, offering a range of recreational opportunities. The vegetation of the Kosciuszko alpine zone is recovering from impacts of livestock grazing and is increasingly exposed to pressures from tourism and anthropogenic climate change. At the same time, natural disturbances such as drought and fire can influence the distribution, composition and diversity of plants. Thus, there is a need for detailed environmental data on this area in order to: (1) better understand ecological relationships; (2) understand existing and potential effects of recreational and management pressures on the region; (3) provide data against which future changes can be assessed; and (4) provide better information on many features of this area, including vegetation, for interpretation, education and management. The research in this thesis utilised three types of ecological information: (1) scientific long-term datasets; (2) photographic records; and (3) a comparison of disturbed and undisturbed vegetation. This research analysed data from one of the longest ongoing monitoring programs in the Australian Alps established by Alec Costin and Dane Wimbush in 1959. Permanent plots (6 transects and 30 photoquadrats) were established at two locations that differed in the time since grazing and have been repeatedly surveyed. Plots near Mt Kosciuszko had not been grazed for 15 years and had nearly complete vegetation cover in 1959, while plots near Mt Gungartan showed extensive impacts of grazing and associated activities which only ceased in 1958. Some transect data from 1959 to 1978 have been analysed by the original researchers. The research presented in this thesis extends this monitoring program with data from additional surveys in 1990, 1999 and 2002 and applies current methods of statistical evaluation, such as ordination techniques, to the whole data set for the first time. Results indicated that the recovery from livestock grazing and the effects of drought have been the main factors affecting vegetation. Recovery from livestock grazing at the three transects at Gungartan was slow and involved: (1) increasing genera diversity; (2) increasing vegetation cover; (3) decreasing amounts of bare ground; and (4) a directional change over time in species composition. Patterns of colonisation and species succession were also documented. In 2002, 44 years after the cessation of grazing, transects near Mt Gungartan had similar vegetation cover and genera diversity to the transects near Mt Kosciuszko, but cover by exposed rock remained higher. A drought in the 1960s resulted in a temporary increase of litter and a shift in the proportional cover of life forms, as grasses died and herb cover increased at both locations. Proportions of cover for life forms reverted to pre-drought levels within a few years. The results also highlighted the spatial variability of tall alpine herbfield. The photoquadrats were surveyed in the years 1959, 1964, 1968, 1978 and 2001 and are analysed for the first time in this thesis. After comparing a range of methods, visual assessment using a 130 point grid was found to be the most suitable technique to measure vegetation cover and genera diversity. At the 18 quadrats near Mt Gungartan, there was a pattern of increasing vegetation cover as bare areas were colonised by native cudweeds and the naturalized herb Acetosella vulgaris. Revegetation from within bare areas largely occurred by herb species, while graminoids and shrub species predominately colonised bare ground by lateral expansion from the edges, eventually replacing the colonising herbs. At the 12 quadrats near Mt Kosciuszko, vegetation cover was almost complete in all years surveyed except 1968, which was at the end of a six year drought. Similar to the results from the transect study, the drought caused an increase in litter at both locations as graminoid cover declined. Initially herb cover increased, potentially as a result of decreased competition from the graminoids and a nutrient spike from decaying litter, but as the drought became more severe, herb cover also declined. Graminoid cover rapidly recovered after the drought, reaching pre-drought levels by 1978, and was at similar levels in 2001. Herb cover continued to decline after peaking in 1964. The photoquadrat study also documented the longevity and growth rates of several species indicating that many taxa may persist for several decades. It further provided insights into replacement patterns amongst life forms. In addition to assessing vegetation change following livestock grazing and drought at the long-term plots, recovery from tourism impacts was examined by comparing vegetation and soils on a closed walking track, with that of adjacent undisturbed tall alpine herbfield at a series of 22 paired quadrats. Fifteen years after the track was closed there was limited success in restoration. Over a quarter of the closed track was still bare ground with non-native species the dominant vegetation. Plant species composition differed and vegetation height, soil nutrients and soil moisture were lower on the track which had a higher compaction level than adjacent natural vegetation. The results presented in this thesis highlight that tall alpine herbfield is characterised by nearly entire vegetation cover which is dominated by graminoids, followed by herbs and shrubs in the absence of disturbance by livestock grazing, trampling or drought. The studies also showed that under quot;average" conditions, the relative cover of herbs and graminoids remained fairly stable even though there can be considerable cycling between them. Spatial variability in terms of taxa composition was high. The only common introduced species in unrehabilitated sites was Acetosella vulgaris, which was effective at colonising bare ground but was eventually replaced by other native species. However, in areas actively rehabilitated, such as on the closed track, non-native species introduced during revegetation efforts still persist with high cover 15 years after their introduction. Monitoring of vegetation change is also important at the landscape scale. This thesis provides a review of the potential use, the limitations and the benefits of aerial photography to examine vegetation change in the Kosciuszko alpine zone. Numerous aerial photography runs have been flown over the area since the 1930s for government agencies, industry and the military. Some of these records have been used to map vegetation communities and eroding areas at a point in time. Other studies compared different types and scales of photographs, highlighting in particular the benefits and potential of large scale colour aerial photography to map alpine vegetation. However, despite their potential to assess vegetation change over time, a temporal comparison of vegetation in the Kosciuszko alpine zone from aerial photographs has not been completed to this date. Historical photographs may not be easy to locate or access and difficulties with vegetation classification may restrict the practicality of using historical aerial photographs to assess vegetation change. Despite these issues, aerial photography may provide a very useful and efficient tool to assess changes over time when applied appropriately, even in alpine environments. The development of digital classification techniques, the application of statistical measures of error to both methodology and data, and the application of geographic information systems are likely to further improve the practicality of historical aerial photographs for the detection of vegetation change and assist in overcoming some of the limitations. The results presented in this thesis highlight the need for limiting disturbance, for ongoing rehabilitation of disturbed areas and for long-term monitoring in the Kosciuszko alpine zone. The results contribute to our understanding of how vegetation may change in the future and may be affected by new land use activities and climate change. This type of information, which otherwise would require the establishment of long-term studies and years of monitoring, can assist land managers of this and other important protected areas. The study highlights how the use and expansion of already existing datasets to gather ecological information can save considerable money and time, providing valuable data for current and emerging issues.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Australian School of Environmental Studies
Full Text

This thesis explores the influence of the Australian Labor Party's (ALP's) national factions on Party policy. The specific emphasis is on policy development during Labor's 1996-2004 period in opposition. Through a total of 88 interviews, predominantly with members of Caucus including Kim Beazley, Simon Crean and Mark Latham, this thesis has been able to examine not only the formal policy development processes but, significantly, also the informal processes within the Party. The thesis begins with an overview of the national factions' organisation and operations in relation to policy development in both the organisational and parliamentary wings. It concentrates on exploring how the informal processes of the faction system dominate the formal Party structures, and demonstrates how the factional elite control these decision-making forums. The thesis then concentrates on analysing in-depth the factional influences on policies developed within the Immigration, Trade and Family and Community Services portfolios. These case studies were selected because they provoked debate, to varying degrees, in the Party. An understanding of how consensus was reached among the diverse perspectives, particularly between the factions, within the Party is critical to exploring the relationship between the national factions and policy development. The case studies cover a range of policy development modes, and therefore provide ample opportunity to explore factional dynamics in relation to policy formulation under different circumstances throughout the 1996-2004 period. This thesis utilises Arend Lijphart's theory of the Politics of Accommodation, which was originally developed to explain inter-party negotiations within the Dutch coalition government during the twentieth century. This theory is relevant to the study of the ALP's modern factions because, similar to the Dutch political system, the faction system operates on the power-sharing principle of proportional representation (PR). By applying Lijphart's theoretical framework, this thesis provides a rigorous and comprehensive analysis of the ALP's factional dynamics in relation to policy. It gives an in-depth analysis of the elite control of the faction system in the domain of policy development. It demonstrates that faction leaders resolve contentious policy issues by negotiating in a 'spirit of accommodation' and when the factions adopt a policy position, the unwritten rules of the 'factional game' are applied to ensure the national factions reach a consensus on Party policy. Given that the national factions compete for power and sometimes pursue a different set of policy objectives, this 'spirit of accommodation' appears to be paradoxical; this palliative application of factional power is arguably in contrast to the general perception of faction politics. Through the presentation and analysis of original primary data this thesis makes a valuable contribution to the study of the ALP and factions in general, significantly advancing existing knowledge.

This thesis explores the influence of the Australian Labor Party's (ALP's) national factions on Party policy. The specific emphasis is on policy development during Labor's 1996-2004 period in opposition. Through a total of 88 interviews, predominantly with members of Caucus including Kim Beazley, Simon Crean and Mark Latham, this thesis has been able to examine not only the formal policy development processes but, significantly, also the informal processes within the Party. The thesis begins with an overview of the national factions' organisation and operations in relation to policy development in both the organisational and parliamentary wings. It concentrates on exploring how the informal processes of the faction system dominate the formal Party structures, and demonstrates how the factional elite control these decision-making forums. The thesis then concentrates on analysing in-depth the factional influences on policies developed within the Immigration, Trade and Family and Community Services portfolios. These case studies were selected because they provoked debate, to varying degrees, in the Party. An understanding of how consensus was reached among the diverse perspectives, particularly between the factions, within the Party is critical to exploring the relationship between the national factions and policy development. The case studies cover a range of policy development modes, and therefore provide ample opportunity to explore factional dynamics in relation to policy formulation under different circumstances throughout the 1996-2004 period. This thesis utilises Arend Lijphart's theory of the Politics of Accommodation, which was originally developed to explain inter-party negotiations within the Dutch coalition government during the twentieth century. This theory is relevant to the study of the ALP's modern factions because, similar to the Dutch political system, the faction system operates on the power-sharing principle of proportional representation (PR). By applying Lijphart's theoretical framework, this thesis provides a rigorous and comprehensive analysis of the ALP's factional dynamics in relation to policy. It gives an in-depth analysis of the elite control of the faction system in the domain of policy development. It demonstrates that faction leaders resolve contentious policy issues by negotiating in a 'spirit of accommodation' and when the factions adopt a policy position, the unwritten rules of the 'factional game' are applied to ensure the national factions reach a consensus on Party policy. Given that the national factions compete for power and sometimes pursue a different set of policy objectives, this 'spirit of accommodation' appears to be paradoxical; this palliative application of factional power is arguably in contrast to the general perception of faction politics. Through the presentation and analysis of original primary data this thesis makes a valuable contribution to the study of the ALP and factions in general, significantly advancing existing knowledge.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Griffith Business School
Griffith Business School
Full Text

In the two decades between 1970 and 1990, hundreds of people passed through the ALP branches of Leichhardt Municipality. These were predominantly members of what this thesis calls a 'middle class Left', employed in professions and para-professions like teaching or the public service and motivated, to one degree or another, by the social movements and politics of the late 1960's and early 1970's. This is a social history incorporating the life histories of a selection of these people. It is set against the backdrop of conflicts with incumbent, conservative, working class-based political machines and the political climate of the times. The thesis is in four parts. Part I, the introduction, establishes the point of view of the writer as it shapes what is also a 'participant history'. In this context, and that of the oral history interviews, the introduction addresses the relationship between memory and history. Parts II and III are the body of the thesis and each is lead by a 'photo-essay', recognising the complimentary importance of a visual narrative. Part II sets out the broad political topography of the 1970's and early 1980's. Chapter one describes the middle-classing of the ALP in Leichhardt Municipality, set against a review of the principal literature. It then moves through chapters two to four to examine the three loci of middle-classing: Annandale, Balmain and Glebe. Part III moves on into the 1980's when the middle class Left 'takes power'. It examines, in chapter five, the emerging, sharp, divisions among the Left on Leichhardt Council and in the contests for federal and state parliamentary seats. Chapter six examines the deepening of these divisions in the mid to late 1980's, concluding with the climactic struggle over the Mort Bay public housing project. Chapter seven looks at the diaspora of the Labor Left in Leichhardt at the end of the 1980's as the branch membership declined and many sought out political alternatives to the ALP. Part IV brings the thesis to its conclusion, focussing on the complexities and ambiguities of the middle class Left and drawing out the main socio-political themes of the two decades.

The objective of this Ph.D. research was to identify new and novel mechanisms of wild radish (Raphanus raphanistrum L.) resistance to photosystem II (PSII) inhibitors, auxinics, and acetohydroxyacid synthase (AHAS) inhibitors. PSIIinhibitor resistance was demonstrated to be target-site based, and conferred by a Ser264 to Gly substitution of the D1 protein. Auxinic resistance was associated with reduced herbicide translocation to the meristematic regions of resistant wild radish plants. Two new resistance mutations of wild radish AHAS were discovered, including one encoding the globally rare Asp376 to Glu substitution, and another encoding an Ala122 to Tyr substitution, which has never been identified or assessed for resistance in plants previously. Characterization of the frequency and distribution of AHAS resistance mutations in wild radish from the WA wheatbelt revealed that Glu376 was widespread, and that some mutations of AHAS are more common than others. Computer simulation was used to examine the molecular basis of resistance-endowing AHAS target-site mutations. Furthermore, through the computer-aided analysis, residues were identified with the potential to confer resistance upon substitution, but which have not previously been assessed for this possibility. Results from this Ph.D. research demonstrate that diverse, unrelated mechanisms of resistance to PSII inhibitors, auxinics, and AHAS inhibitors have evolved in wild radish of the WA wheatbelt, and that these mechanisms have accumulated in some populations.

The effects of fire on plant communities are a subset of a broader range of spatial and temporal influences on plant community dynamics. Widespread unplanned fires in the Australian Alps in 2003 provided a unique opportunity to investigate the response of vascular plant species to high severity fire and to test whether there was a differential response to variations in fire severity that may affect long term vegetation dynamics within and between subalpine, montane and tablelands plant communities. A series of pre-existing sites established in the late 1990s in the northern parts of the Australian Alps in Brindabella National Park, Bimberi Nature Reserve and Burrinjuck Nature Reserve were resurveyed and monitored from 2003-2012. Two research questions were posed: 1) what is the response to high severity fire of vascular plant species found in subalpine, montane and tablelands plant communities? 2) does high severity fire result in significant or permanent change to vascular plant species richness and plant community composition as compared to low severity fire in subalpine, montane and tablelands plant communities and does the recovery rate vary with severity? The fire responses of over 400 vascular plant species in 21 plant communities were documented. There was no loss of plant species from the study areas and all vascular plant species recovered rapidly post-fire, but some fire-killed species exhibited slow recovery rates. Although vegetation structure is affected by fire severity, it is fire severity interacting with fire frequency that has the potential to change vegetation structure in the long term, particularly via the loss of structurally dominant obligate seeder species. The overall trend in vascular plant species richness was an increase in species richness post-fire irrespective of fire severity, with a time since fire decline. Significantly for forest ecosystems, this peak and decline response of vascular plant species richness post-fire is modified and varies over time in relation to rainfall, decreasing in dryer years. While there was an initial difference in floristic compositional dissimilarity between low and high severity sites in the Brindabella sites and greater dissimilarity in the short to medium term, this dissimilarity diminished over time and there was no evidence of permanent compositional change in high severity sites. In high severity sites, there was an increase in the density of many dominant shrub species leading to differences in the short term post-fire but by 10 years post-fire any compositional difference due to severity was not detectable. The Burrinjuck study area did not exhibit these differences in relation to fire severity but did exhibit differences in richness and composition based on season of sampling. The results of this research show that site identity is strong and that the plant communities investigated are buffered against long term shifts in composition, even after a large infrequent disturbance event such as the 2003 fires. Post-fire effects are transient rather than permanent. Infrequent high severity fire events in the Australian Alps should be regarded as natural disturbances, and not as disruptive perturbations, as they do not lead to permanent changes in the plant communities investigated. However, if high severity fire events become more frequent under climate change then resultant changes in structure, composition and richness are likely to occur.This research has vastly improved our understanding of how subalpine, montane and tablelands plant communities respond to high severity fire and provides reserve managers with detailed species and community level responses to better inform fire management. The research also provides a baseline with which to compare the effects of future changes to fire regimes in these communities under climate change. The research has shown how long term monitoring plays a crucial role in understanding vegetation dynamics.

Snow is an important factor in the lives of flora and fauna in those regions where it occurs. Despite this, there is a relative lack of information about the ecological role of snow. In addition, on a global scale the majority of the research on snow ecology has been based in the boreal regions of North America and Eurasia. Insights from these areas may not extrapolate well to Australia. The distribution and physical characteristics of snow are highly variable both temporally and spatially. Its occurrence is affected by a range of factors acting at multiple scales. Working in snow covered areas, however, presents considerable practical problems, particularly for researchers attempting to sample organisms in the subnivean space between the base of the snowpack and the ground surface. As a result, most research has focused on small-scale projects because of logistical and animal-welfare issues. A technique was developed for this study for sampling small mammals beneath the snow using hairtubes fitted with bait and a removable adhesive surface that could be inserted into the subnivean space through a vertical PVC pipe. The technique provided a 39% detection rate with only 0.2% of tubes visited but not collecting hair samples. Using. this technique, it was possible to expand systematic sampling of small mammals in the subnivean space to larger scales at which snow cover can vary spatially and temporally particularly at the landscape scale. The main part of this research was conducted over two winters (2002-2003) at sites established in a series of valleys close to the Summit Road in Kosciuszko National Park, south-eastern Australia. Selection of sites was based on factors considered important in influencing the distribution of snow in the landscape and representative of the key vegetation types occurring in the subalpine zone. The resulting design consisted of 72 sites stratified by elevation (1501-1600 m, 1601-1700 m, 1701-1800 m), aspect (accumulating, ablating) and vegetation type (woodland, wet heath, dry heath, grassland) with each combination replicated three times. Each site consisted of three hairtube plots approximately 10 metres apart, at which small mammals were sampled. In addition, a range of biotic and abiotic factors including snow cover characteristics were measured throughout the winter at these same sites. In January 2003, a major bushfire burned 70% of the subalpine area of Kosciuszko National Park and damaged 83% of the sites established in 2002. As a result sampling during winter 2003 was limited to high elevation sites, along with a fifth habitat type (boulderfields). The snow cover that occurs in the main alpine and subalpine region of the· Snowy Mountains is primarily maritime in areas where there is sufficient accumulation, and ephemeral at lower elevations and ort higher ablating aspects. Maritime snow is generally deep (> lOOcm), with a density >0.30gcm-3, as a result of destructive metamorphism throughout the winter. The formation of depth hoar, which is considered to be important in acilitating the development of the subnivean space, does not occur under these conditions. Ephemeral snow is characterised by warm shallow snow that often melts before new snow is deposited. When snow was present, detections of dusky antechinus, Antechinus swainsonii and the bush rat, Rattus fuscipes were negatively correlated with snow depth and duration, and positively correlated with the complexity of structures and microtopography. At high elevations, detections were largely confined to boulderfields, and at mid- and low elevations, small mammals were detected primarily in habitats where the subnivean space was most extensive. Antechinus swainsonii and R. fuscipes responded differently to snow cover with the latter seeming better able to overwinter where snow cover was shallow and patchy. In contrast, A. swainsonii occurrence was correlated with the size of the subnivean space. The development of the subnivean space in the Snowy Mountains is dependent on the presence of structures such as shrubs, boulders and microtopographic features that are capable of supporting a snow layer above ground level. The temperature in the subnivean space was virtually constant beneath the snowpack, ranging between 0 and + 1 °C. When snow was patchy or absent, temperatures at ground level were highly variable with a minimum as low s -13°C and maximum as high as +47.5°C. Antechinus swainsonii and R. fuscipes were detected more regularly at sites that were thermally variable. At sites with deep and persistent snow cover (maritime snow), subnivean temperatures were stable, but small mammals were detected at low frequencies. At high elevations, boulderfields were favoured by small mammals during the nival period but were no different thermally from other habitats. The limitations imposed by snow cover on small mammals were further verified by a radio tracking study conducted during 2003 at Perisher Creek. That study investigated the home range size and activity patterns of R. fuscipes and A. swainsonii in relation to snow cover. Once continuous snow cover became established, the home range of both species contracted dramatically and there was an increase in home range overlap. Neither species showed any change in diurnal activity patterns. Rattus fascipes showed signs of social interaction during both seasons in contrast to A. swainsonii, which appeared to remain solitary. In winter, R. fuscipes nested communally at a single location, while during autumn the species appeared to use a number of nest sites. There was no significant change in daily activity patterns between autumn and winter in either species. R. fuscipes remained primarily nocturnal during both pre-nival and nival periods while A. swainsonii continued to be active throughout the diel cycle, although there was a slight shift in its peak activity time. Human activities can, have significant effects on the subnivean space and its residents. The physical characteristics of a range of modified snow types were investigated in the vicinity of several ski resorts in Kosciuszko National Park. Human activities associated with snow-based recreation, such as the creation of ski pistes, surface ski lifts and over-snow routes, involve compression of the snowpack and resulted in small or absent subnivean spaces and high snow cover densities compared to unmodified snow cover. To test the effects of the loss of the subnivean space on small mammals, the snowpack was experimentally compressed in high quality subnivean habitats. Detections of R. fascipes and A. swainsonii declined by 75-80%. Burnt sites from the 2002 study were used in 2003 to investigate the effect of removing vegetation on the subnivean space, to simulate the loss of structure associated with ski slope preparation. There was a significant reduction (p<0.0001) in the size of the subnivean space compared to unburnt sites regardless of habitat type. The key conclusions of the work reported in this thesis are listed below: • Snow conditions in the Australian Alps are markedly different from those of higher northern latitudes and altitudes. As a result, conclusions about snow/fauna interactions based on research in regions with particular snow cover types need to be carefully considered before attempting to extrapolate generalisations to other parts of the world. • The subnivean space can be formed either by passive or active processes. The former occurs when there are sufficient competent structures to permit the support of the snow pack above the ground surface, while the latter refers to the ability of small mammals to actively tunnel through relatively low density snow (depth hoar) and thus create their own subnivean space. In Australia the passive process dominates. • The widely held assumption that small mammals are dependent on the thermally stable conditions in the subnivean space was not confirmed. Rattus fascipes and A. swainsonii survive in the Australian Alps because they are able to exploit thermally variable environments. • Management of human activities in nival areas should focus on avoiding disturbance in areas where a subnivean space forms, particularly in high quality winter habitats such as boulderfields. • Global warming resulting from climate change is likely to provide conditions in the Australian Alps that favour an expansion of the distribution and population of R. fuscipes and A. swainsonii, but nival endemics such as Burramys parvus and possibly Mastacomys fuscus may be at a disadvantage. • The extent of alpine and subalpine environments in Australia will decrease in future, imposing greater pressure on a shrinking resource and raising the possibility of conflict between user groups and conservation imperatives.

The research detailed in this dissertation focuses on plant and faunal remains preserved in the accumulating sediments at aestivation sites of the Bogong Moth (Agrotis infusa), in the crevices of granite tors in the northern Australian Alps. Analyses have confirmed the preservation of a diverse range of fossil material, including bird feathers, hairs of small marsupials occupying the rock crevice niche, fossil pollen and spores derived from the summit vegetation, and charcoal from fires in the immediate vicinity of the aestivation sites. The fieldwork focused on the sampling of deposits at various aestivation sites representative of different biogeographical areas to ascertain the sedimentary characteristics of each region. Three aestivation study areas were located and sampled for the study, the Brindabella Ranges, the Bogong Peaks and the Tinderry Range in NSW. The Tinderry Range sites represent the most easterly geographical region, while the Bogong Peaks site and Brindabella Ranges sites represent, respectively, the western and central aestivation site regions of the northern Australian Alps area. Since preservation of organic material typically occurs in a stable low oxygen environment, investigation into the depositional environment is an important aspect of the study to taphonomically contextualise the environmental proxies. The palynological preparation of material from the three regions revealed abundant pollen derived from local vegetation. A rich assemblage of mammal hair was found in the Bogong Peaks and Mt Gingera sediments. This record provides a unique faunal proxy of sub-alpine ecosystems. Levels of charcoal in the sediments reflect past fire frequency, and are presented in both micro- and macro-charcoal graphs. Aestivation site deposits are a unique terrestrial archive recording ecological change in the montane and sub-alpine environments for over 1000 years. Despite some chronometric difficulties, they provide an excellent record of the effects of local disturbance, such as fires, on the biome and provide insights into the impact of European settlement, on both vegetation structure and faunal biodiversity. The study provides evidence of massive cultural, ecological and climatic upheaval at sub-alpine elevations in the northern Australian Alps from the late Holocene up to the present, and illustrates the great value that aestivation sites hold as terrestrial archives, signalling a need for further utilisation and investigation in light of rapid human induced climate change.

This thesis provides an update to the Aboriginal and environmental histories of the ‘high country’ in southeastern Australia from the terminal Pleistocene to the recent past. Its focus is the Namadgi Ranges, representing the northern-most outliers of the Australian Alps. The study combines archaeological excavations of rock shelter sites – from Wee Jasper in the north to the southern Namadgi valleys – with environmental reconstructions from adjacent peatlands. In a context of changing local environments, the findings provide new perspectives on when and how Aboriginal people were active in the mountains, and allow for a re-evaluation of existing archaeological models of occupation and technological change. AMS radiocarbon dates, sediment geochemistry, quantitative stone artefact analyses and other proxies contribute to solidifying the chronology and characteristics of high country habitation. Evidence of terminal Pleistocene activities is found at Wee Jasper in the Namadgi foothills, but remains elusive at higher elevations (> 1000 m). The revised datasets also reveal a previously unidentified period of low-intensity habitation across the ranges from the early to mid Holocene period (8000 to 5000 BP), possibly in response to a Holocene ‘climatic optimum’. The new evidence suggests that people may have largely abandoned the high country from 5000 or 4500 BP. From 2000 BP, however, evidence of habitation reappears, culminating in evidence for a maximum of occupation during the past 1000 years. In combination with an evaluation of known archaeological data from the high country and around its margins, the findings presented herein contradict several existing occupational and technological models, and also caution against the application of broad-scale cultural models across southeastern Australia. A regional environmental history is constructed by analyses of sediments that started to build up 16,000 years ago as the climate warmed. Fire event reconstruction based on charcoal, stratigraphic clues in peat sediments, geochemical signatures of landscape productivity and instability, and a faunal record from Wee Jasper provide a detailed record of change. Comparison of the archaeological and palaeoenvironmental datasets reveals a potential link in these two records, in the form of a tentatively identified signal of anthropogenic burning during the early to mid Holocene. More generally, the environmental history provides a backdrop of changing climates and landscape processes to which Aboriginal people adapted and responded over thousands of years.

The following thesis is about the formation of the Democratic Labor Party(DLP). Its prime aim will be to show that ideology was the overriding factor which brought about the DLP's existence. In attempting to prove this contention the following thesis will be subdivided into three parts. Firstly, an emphasis will be placed on outlining the lack of historiographical consensus concerning the DLP's formation. Three main schools of thought will be identified. It is hoped the inconsistencies within each group will allow the reader to see the scope that exists for a new argument. Secondly, this thesis will argue that the DLP's existence was d i r e c t l y related to the Catholic Social Studies Movement (Movement) and ALP Industrial Groups. This connection will be highUghted by drawing together DLP policy, Movement/Industrial Group directives, populist ideals and views from contemporaries associated with Democratic Labor. Issues concerning the family, economics, social decentralisation and patriotism will all be used to illustrate and reinforce this link. Thirdly, this thesis will introduce some key Catholic activists and discuss their definition of "true" Labor ideals. By bringing forward this final point, the following thesis will seek to complete the argument that ideology was at the heart of the DLP's genesis and existence.

Despite increased female participation in sport, there remains an under-representation of women in sport leadership positions, particularly at the elite level (e.g., Acosta & Carpenter, 2010; Cameron, 1996; Hartmann-Tews & Pfister, 2003; McKay, 1997; Robertson, 2010). Researchers have identified barriers that have inhibited women’s progression to elite-level roles. Little is known, however, about the pathways or experiences of women who do advance to elite-level positions. The primary aim of this dissertation research was to explore how women overcome societal, organisational, familial, and personal barriers to obtain employment as elite-level coaches, officials (referees, umpires), and administrators (managers, directors, executives).

The deregistration and dismemberment of the Builders Labourers’ Federation (BLF), which was executed by Federal and State Labor Governments, was one of the most significant events in Australian industrial relations history. The union and its general secretary, Norm Gallagher, continue to excite passionate debate whenever their names are invoked. Portrayed as the ugly face of trade unionism, Gallagher and the BLF provided national and state Labor Party reformers with a timely mechanism through which they could both assert their dominance over the Party and broaden its electoral appeal. This thesis incorporates BLF activities into the larger story of Labor Party transmutation that occurred between the 1960s and 1980s. By examining these shifts in the Labor Party through the prisms of Gallagher and the BLF, we can better understand Labor’s decision to deregister and ultimately destroy the union. The thesis argues that the trajectories taken by the BLF and the ALP were sufficiently divergent that conflict was inevitable. Drawing on a range of key sources, this thesis provides a new assessment of BLF deregistration, the schisms it opened up within both the Labor Party and Conservative interests, and the way in which destruction of a union represented a critical moment in Australian political and industrial history.

The period from 1910 to 1939 was one of the most turbulent chapters in New South Wales labour history. It was defined by intense ideological conflict, winner-take-all factional warfare, widespread accusations of corruption and multiple Labor Party splits. Intertwined within these issues were questions of democracy and oligarchy within the labour movement. To what extent should members control labour institutions? Democracy within unions and parties means control by the ordinary members and, where necessary, their accountable representatives. Oligarchy sits at the opposite end of the spectrum from democracy and entails organisational domination by a small group of leaders. This thesis examines the tensions and struggles between democracy and oligarchy within three key labour organisations. Events inside one major organisation affected what happened inside the others and my study is therefore relational and comparative, examining the Australian Workers Union (AWU), the Miners Federation and the NSW Labor Party. Both the AWU and NSW Labor Party were oligarchies and became more oligarchical over time. Conversely, the Miners Federation was highly democratic, although it too became less democratic over time. The NSW Labor Party was an interconnected oligarchy, both influencing and influenced by its affiliated trade unions. These influences were complicated and sometimes counterintuitive. At times the effects were straightforward, with organisations and leaders transposing their own methods into another organisation, but in other instances the participation of oligarchical unions and union leaders enhanced democracy within the Labor Party and vice versa. Oligarchy predominated in the AWU and NSW Labor Party but it was always contested. Countervailing tendencies against oligarchy were continuously operating in some form, even when the organisations were at their least democratic. My analytical framework comes from the sociological literature on trade union and political party democracy and I compare each organisation’s community, rules, local autonomy, rank-and-file decision-making, internal opposition, free communication and equality between officials and members. The key factor that separated the democratic Miners Federation from the oligarchical AWU and Labor Party was that the miners worked and lived within united, stable occupational communities in which the majority of union members and officials believed in democracy and worked towards its realisation.

This thesis examines the relationship between the various left groupings that constituted the opposition to the war in Vietnam in the late 1960s and early 1970s. The focus is on how the newer radical groups of this period interacted with and influenced the established Left and peace movement. The work concentrates on opposition to the war within the Australian State of Victoria, drawing upon interviews with participants as well as written material from primary and secondary sources.

The rise of the Monash University Labor Club to the most prominent radical student group in Australia by 1967 was the result of those radicalising events and ideologies that had been emerging internationally, nationally and locally during 1965-67. Events such as the escalation of the Vietnam War and the emergence of the Cultural Revolution in China were particularly influential upon the student movement in Australia during this period. Arguably the most influential ideological force upon the Monash Labor Club during this period was the idea of Marxism-Leninism, or Maoism, articulated by the Chairman of the Chinese Communist Party, Mao TseTung. It is this radicalising role of Maoism upon the 1960's student movement in Melbourne that will be the core concern of this thesis. Past studies concerned with the Monash Labor Club in 1965-67 have tended to downplay the role of Maoist ideas at Monash during this period. However, this thesis will attempt to show that it was the Maoist ideas of Labor Club leaders like Albert Langer that allowed the club to rise to such prominence in 1967. Furthermore this thesis will show how the connections achieved by Langer with the Communist Party of Australia (Marxist-Leninist), and certain Maoist-led Unions in Melbourne, played a significant role in the successful aims, actions and campaigns carried out by the Labor Club in 1967.