Dissertations / Theses on the topic 'Australian flora'
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Robertson, Luke. "Anti-malarial Drug Discovery from Australian Flora." Thesis, Griffith University, 2018. http://hdl.handle.net/10072/381516.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environment and Sc
Science, Environment, Engineering and Technology
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D’Agui, Haylee Marie. "Evolutionary Adaptations to Climate Change in Australian Flora." Thesis, Curtin University, 2017. http://hdl.handle.net/20.500.11937/57124.
Full textHill, Robert S. "Evolution of the Australian flora in response to Cenozoic climate change /." Title page, contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09S.D/09s.dh6469.pdf.
Full textRyan, John C. "Plants, people and place : cultural botany and the Southwest Australian flora." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2011. https://ro.ecu.edu.au/theses/426.
Full textHandley, Michelle Anne. "The distribution pattern of algal flora in saline lakes in Kambalda and Esperance, Western Australia." Thesis, Curtin University, 2003. http://hdl.handle.net/20.500.11937/413.
Full textGrowcock, Andrew Jason William. "Impacts of Camping and Trampling on Australian Alpine and Subalpine Vegetation and Soils." Thesis, Griffith University, 2006. http://hdl.handle.net/10072/366707.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environmental and Applied Science
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Handley, Michelle Anne. "The distribution pattern of algal flora in saline lakes in Kambalda and Esperance, Western Australia." Curtin University of Technology, Department of Environmental Biology, 2003. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=14435.
Full textDiatoms and cyanobacteria were dominant in all lakes except the most eutrophic, Lake Warden, in which benthic green algae were most abundant. All algal species recorded were known for their wide geographic distribution and their distribution in Australian coastal waters. Characteristically coastal diatom species included Achnanthes brevipes, Achnanthes coarctata, Achnanthes lanceolata var. dubia, Achnanthidium cruciculum, Campylodiscus clypeus, Cyclotella atomus, Cyclotella meneghiniana, Cyclotella striata, Mastogloia elliptica, Mastoglia pumila, Nitzschia punctata and Thalassiosira weissflogii. The inland salt lakes of the Kambalda region form part of an extensive palaeodrainage system, and were much less predictable in terms water regime than lakes in Esperance. Water depth was determined by seasonal variability in rainfall and evaporation, and by summer cyclonic rainfall events that were unreliable from year to year. In addition, rainfall varied spatially within the region. As such, most lakes were classified as intermittent. Two lakes in the region were not classified on the basis of water regime as they were too highly impacted by mining activities including water diversion and impoundment, water extraction and discharge of groundwater. Salinity varied in accordance with drying and filling cycles in the lakes except the most hypersaline as the volume of water received during rainfall events was insufficient to dilute the extensive surface salt crusts they each supported when dry. Salinities recorded in the region ranged from subsaline to hypersaline, and ionic compositions exhibited the same spectrum as seawater.
Calcium levels were significantly higher than in lakes from the Esperance region due to weathering of calcium rich sediments, and pH ranged from weakly acidic in the most hypersaline lakes to alkaline in the least saline lakes. All were well mixed in terms of oxygen and temperature. Kambalda salt lakes support distinctive algal communities dominated by diatoms and cyanobacteria that are adapted to intermittent water regimes, extended periods of desiccation and variable salinity. Not surprisingly then, none of the algal taxa recorded from the region were regionally restricted, all noted previously in the literature to have wide geographic distributions, and to be tolerant of a range of physicochemical conditions. Canonical correspondence analysis showed that, of the physicochemical parameters that were investigated in this study, both salinity and pH interacted in determining algal community structure. Both of these attributes were correlated with water depth, which varied according to climatic conditions in a seasonal drying and filling cycle. The general relationship between species richness and pH and salinity, and species diversity and pH and salinity was simple and linear; with increasing pH and salinity, species diversity and species richness decreased. What was less simple, and non-linear, was the nature of the relationship between species richness and diversity and salinity within more narrowly defined ranges of salinity. As salinity increased from <1ppt to 30ppt there was a dramatic reduction in species richness and diversity, then, as salinity increased from 30ppt to 100ppt the rate of decrease slowed. Between 100ppt and 250ppt there was almost no relationship between salinity and species richness and species diversity, but after 250ppt both species diversity and species richness declined markedly.
Drayson, Nick English Australian Defence Force Academy UNSW. "Early developments in the literature of Australian natural history : together with a select bibliography of Australian natural history writing, printed in English, from 1697 to the present." Awarded by:University of New South Wales - Australian Defence Force Academy. School of English, 1997. http://handle.unsw.edu.au/1959.4/38674.
Full textEaston, Lyndlee Carol, and lyndlee easton@flinders edu au. "LIFE HISTORY STRATEGIES OF AUSTRALIAN SPECIES OF THE HALOPHYTE AND ARID ZONE GENUS FRANKENIA L. (FRANKENIACEAE)." Flinders University. Biological Sciences, 2008. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20081124.105244.
Full textScrivan, Leonie Jane. "Diversity of the mid-Eocene Maslin Bay flora, South Australia /." Title page, contents and abstract only, 1993. http://web4.library.adelaide.edu.au/theses/09PH/09phs434.pdf.
Full textKloot, P. M. "Studies in the alien flora of the cereal rotation areas of South Australia /." Title page, contents and summary only, 1985. http://web4.library.adelaide.edu.au/theses/09PH/09phk655.pdf.
Full textGoodsell, Paris Justine. "Consequences of disturbance for subtidal floral and faunal diversity /." Title page, abstract and table of contents only, 2004. http://web4.library.adelaide.edu.au/theses/09PH/09phg6555.pdf.
Full textForster, Paul I. "The pursuit of plants : studies on the systematics, ecology and chemistry of the vascular flora of Australia and related regions /." [St. Lucia, Qld], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18317.pdf.
Full textReiter, Noushka Hedy, and noushka reiter@dse vic gov au. "Borya mirabilis steps in the recovery of a critically endangered Australian native plant." RMIT University. Applied Sciences, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20090227.160625.
Full textPang, Chun-chiu, and 彭俊超. "Floral biology, pollination ecology and breeding systems of selected Dasymaschalon, Desmos, Pseuduvaria and Uvaria species (Annonaceae) inSouthern China and Australia." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B47752737.
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Biological Sciences
Doctoral
Doctor of Philosophy
Roe, Brett, and b. roe@cqu edu au. "Ecologically Engineered Primary Production in Central Queensland, Australia - Integrated Fish and Crayfish Culture, Constructed Wetlands, Floral Hydroponics, and Industrial Wastewater." Central Queensland University. Sciences, 2005. http://library-resources.cqu.edu.au./thesis/adt-QCQU/public/adt-QCQU20080717.092551.
Full textDavila, Yvonne Caroline. "Pollination ecology of Trachymene incisa (Apiaceae): Understanding generalised plant-pollinator systems." University of Sydney, 2006. http://hdl.handle.net/2123/1896.
Full textA renewed focus on generalised pollinator systems has inspired a conceptual framework which highlights that spatial and temporal interactions among plants and their assemblage of pollinators can vary across the individual, population, regional and species levels. Pollination is clearly a dynamic interaction, varying in the number and interdependence of participants and the strength of the outcome of the interaction. Therefore, the role of variation in pollination is fundamental for understanding ecological dynamics of plant populations and is a major factor in the evolution and maintenance of generalised and specialised pollination systems. My study centred on these basic concepts by addressing the following questions: (1) How variable are pollinators in a generalised pollination system? To what degree do insect visitation rates and assemblage composition vary spatially among populations and temporally among flowering seasons? (2) How does variation in pollinators affect plant reproductive success? I chose to do this using a model system, Trachymene incisa subsp. incisa (Apiaceae), which is a widespread Australian herbaceous species with simple white flowers grouped into umbels that attract a high diversity of insect visitors. The Apiaceae are considered to be highly generalist in terms of pollination, due to their simple and uniform floral display and easily accessible floral rewards. Three populations of T. incisa located between 70 km and 210 km apart were studied over 2-3 years. The few studies investigating spatial and temporal variation simultaneously over geographic and yearly/seasonal scales indicate that there is a trend for more spatial than temporal variation in pollinators of generalist-pollinated plants. My study showed both spatial and temporal variation in assemblage composition among all populations and variation in insect visitation rates, in the form of a significant population by year interaction. However, removing ants from the analyses to restrict the assemblage to flying insects and the most likely pollinators, resulted in a significant difference in overall visitation rate between years but no difference in assemblage composition between the Myall Lakes and Tomago populations. These results indicate more temporal than spatial variation in the flying insect visitor assemblage of T. incisa. Foraging behaviour provides another source of variation in plant-pollinator interactions. Trachymene incisa exhibits umbels that function as either male or female at any one time and offer different floral rewards in each phase. For successful pollination, pollinators must visit both male and female umbels during a foraging trip. Insects showed both preferences and non-preferences for umbel phases in natural patches where the gender ratio was male biased. In contrast, insects showed no bias in visitation during a foraging trip or in time spent foraging on male and female umbels in experimental arrays where the gender ratio was equal. Pollinator assemblages consisting of a mixture of different pollinator types coupled with temporal variation in the assemblages of populations among years maintains generalisation at the population/local level. In addition, spatial variation in assemblages among populations maintains generalisation at the species level. Fire alters pollination in T. incisa by shifting the flowering season and reducing the abundance of flying insects. Therefore, fire plays an important role in maintaining spatial and temporal variation in this fire-prone system. Although insect pollinators are important in determining the mating opportunities of 90% of flowering plant species worldwide, few studies have looked at the effects of variation in pollinator assemblages on plant reproductive success and mating. In T. incisa, high insect visitation rates do not guarantee high plant reproductive success, indicating that the quality of visit is more important than the rate of visitation. This is shown by comparing the Agnes Banks and Myall Lakes populations in 2003: Agnes Banks received the highest visitation rate from an assemblage dominated by ants but produced the lowest reproductive output, and Myall Lakes received the lowest visitation rate by an assemblage dominated by a native bee and produced the highest seedling emergence. Interestingly, populations with different assemblage composition can produce similar percentage seed set per umbel. However, similar percentage seed set did not result in similar percentage seedling emergence. Differences among years in reproductive output (total seed production) were due to differences in umbel production (reproductive effort) and proportion of umbels with seeds, and not seed set per umbel. Trachymene incisa is self-compatible and suffers weak to intermediate levels of inbreeding depression through early stages of the life cycle when seeds are self-pollinated and biparentally inbred. Floral phenology, in the form of synchronous protandry, plays an important role in avoiding self-pollination within umbels and reducing the chance of geitonogamous pollination between umbels on the same plant. Although pollinators can increase the rate of inbreeding in T. incisa by foraging on both male and female phase umbels on the same plant or closely related plants, most consecutive insect movements were between plants not located adjacent to each other. This indicates that inbreeding is mostly avoided and that T. incisa is a predominantly outcrossing species, although further genetic analyses are required to confirm this hypothesis. A new conceptual understanding has emerged from the key empirical results in the study of this model generalised pollination system. The large differences among populations and between years indicate that populations are not equally serviced by pollinators and are not equally generalist. Insect visitation rates varied significantly throughout the day, highlighting that sampling of pollinators at one time will result in an inaccurate estimate and usually underestimate the degree of generalisation. The visitor assemblage is not equivalent to the pollinator assemblage, although non-pollinating floral visitors are likely to influence the overall effectiveness of the pollinator assemblage. Given the high degree of variation in both the number of pollinator species and number of pollinator types, I have constructed a model which includes the degree of ecological and functional specialisation of a plant species on pollinators and the variation encountered across different levels of plant organisation. This model describes the ecological or current state of plant species and their pollinators, as well as presenting the patterns of generalisation across a range of populations, which is critical for understanding the evolution and maintenance of the system. In-depth examination of pollination systems is required in order to understand the range of strategies utilised by plants and their pollinators, and I advocate a complete floral visitor assemblage approach to future studies in pollination ecology. In particular, future studies should focus on the role of introduced pollinators in altering generalised plant-pollinator systems and the contribution of non-pollinating floral visitors to pollinator assemblage effectiveness. Comparative studies involving plants with highly conserved floral displays, such as those in the genus Trachymene and in the Apiaceae, will be useful for investigating the dynamics of generalised pollination systems across a range of widespread and restricted species.
Nge, Francis Jason. "Diversification dynamics and evolution of the Australian temperate flora." Thesis, 2021. https://hdl.handle.net/2440/132888.
Full textThesis (Ph.D.) -- University of Adelaide, School of Biological Sciences, 2021
McDonald, John Thomas. "Biogeography of Australian chenopods: landscape in the evolution of an arid flora." Thesis, 2020. http://hdl.handle.net/2440/126029.
Full textThesis (Ph.D.) -- University of Adelaide, School of Biological Sciences, 2020
Joyce, Elizabeth Marie. "Evolution of the northern Australian flora: role of the Sunda-Sahul Floristic Exchange." Thesis, 2021. https://researchonline.jcu.edu.au/71388/1/JCU_71388_Joyce_2021_thesis.pdf.
Full textHill, Robert S. "Evolution of the Australian flora in response to Cenozoic climate change / Robert S. Hill." Thesis, 1997. http://hdl.handle.net/2440/38512.
Full text4 v. :
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
Thesis (Ph.D.)--University of Adelaide, Depts. of Geology & Geophysics and Botany, 1997?
Franzi, Cathryn Vanessa. "An Australian botanical narrative : a practice-led enquiry into representations of Australian flora on the ceramic vessel as an expression of environmental culture." Phd thesis, 2015. http://hdl.handle.net/1885/109317.
Full textKeaney, Benedict. "Bogong Moth Aestivation Sites as an Archive for Understanding the Floral, Faunal and Indigenous History of the Northern Australian Alps." Phd thesis, 2016. http://hdl.handle.net/1885/119187.
Full text(9808472), Maryanne Jones. "A comparative study of water quality, benthic flora and phytoplankton in four newly developing estuaries of the Australian-Pacific zone and implications for 'sea-change' development." Thesis, 2012. https://figshare.com/articles/thesis/A_comparative_study_of_water_quality_benthic_flora_and_phytoplankton_in_four_newly_developing_estuaries_of_the_Australian-Pacific_zone_and_implications_for_sea-change_development/13459223.
Full textSanecki, Glenn M. "The distribution and behaviour of small mammals in relation to natural and modified snow in the Australian Alps." Phd thesis, 2005. http://hdl.handle.net/1885/12625.
Full textKloot, P. M. (Peter Michael). "Studies in the alien flora of the cereal rotation areas of South Australia." 1986. http://web4.library.adelaide.edu.au/theses/09PH/09phk655.pdf.
Full textKloot, Peter Michael. "Studies in the alien flora of the cereal rotation areas of South Australia." Thesis, 1985. http://hdl.handle.net/2440/20578.
Full textRussell, Bayden D. "The ecology of subtidal turfs in southern Australia." 2005. http://hdl.handle.net/2440/37981.
Full textThesis (Ph.D.)--School of Earth and Environmental Sciences, 2005.
Russell, Bayden D. "The ecology of subtidal turfs in southern Australia." Thesis, 2005. http://hdl.handle.net/2440/37981.
Full textThesis (Ph.D.)--School of Earth and Environmental Sciences, 2005.
Kloot, P. M. (Peter Michael). "Studies in the alien flora of the cereal rotation areas of South Australia / P.M. Kloot." 1985. http://hdl.handle.net/2440/20578.
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2 v. : ill. (some col.) ; 30 cm.
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
Thesis (Ph.D.)--University of Adelaide, Dept. of Agronomy, 1986
Scriven, Leonie Jane. "Diversity of the mid-Eocene Maslin Bay flora, South Australia / by Leonie Jane Scrivan." Thesis, 1993. http://hdl.handle.net/2440/21420.
Full textWhitehead, Michael Robert. "The evolutionary biology of pollination: studies in a genus of australian sexually deceptive orchids." Phd thesis, 2012. http://hdl.handle.net/1885/10260.
Full textSomerville, Doug. "The floral resources of New South Wales of primary importance to commercial beekeeping." Phd thesis, 2004. http://hdl.handle.net/1885/146409.
Full text(9830960), Brett Roe. "Ecologically engineered primary production in Central Queensland, Australia: Integrated fish and crayfish culture, constructed wetlands, floral hydorponics, and industrial wastewater." Thesis, 2005. https://figshare.com/articles/thesis/Ecologically_engineered_primary_production_in_Central_Queensland_Australia_Integrated_fish_and_crayfish_culture_constructed_wetlands_floral_hydorponics_and_industrial_wastewater/13420664.
Full textBann, Glen Robert. "Apparent dryland salinity on the uplands of southeastern Australia; quantification of biotic and abiotic indicators, causes, mechanisms, processes and effects." Phd thesis, 2014. http://hdl.handle.net/1885/101934.
Full textKirby, Ronald Vernon. "A comparative study of the enforcement of environmental law with regard to the conservation of fauna and flora in the RSA." 2002. http://hdl.handle.net/10500/17092.
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