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Articles 1 - 10 of 10
Full-Text Articles in Life Sciences
The Fringing Halophytic Vegetation Of Lake Austin: A Study Of Mining Impacts And Vegetation Dynamics, Simone Vellekoop
The Fringing Halophytic Vegetation Of Lake Austin: A Study Of Mining Impacts And Vegetation Dynamics, Simone Vellekoop
Theses : Honours
Mining operations in arid regions of Western Australia are faced with many environmental management issues. One such issue is the disposal of mine water to the environment. Mine water is commonly discharged to nearby salt lakes under licence by the Department of Environmental Protection. Licence conditions dictate that the discharge water and the receiving environment be monitored to allow impacts on the environment to be detected. Salt lakes are associated with vegetation communities dominated by halophytic members of the Chenopodiaceae, While these plants are tolerant of salinity extremes, the germination stage of many species requires periods of lowered salinity. There …
Changes In Muscle Function And Motorneuron Excitability Of The Triceps Surae Following A Bout Of Fatiguing Eccentric Exercise, Mikala Pougnault
Changes In Muscle Function And Motorneuron Excitability Of The Triceps Surae Following A Bout Of Fatiguing Eccentric Exercise, Mikala Pougnault
Theses : Honours
A reduction in capacity of the neuromuscular system associated with exercise can occur from a wide range of physiological and psychological factors. Many researchers have investigated neural activation during exercise, or the effects of muscle damage associated with eccentric exercise, but few have studied the prolonged effects of a bout of eccentric exercise on strength and motorneuron excitability. Eleven male and female subjects (aged 20-43 years) were tested to determine the effects of a fatiguing bout of eccentric exercise upon maximal isometric plantarflexion strength, motorneuron excitability, and neural activation of the soleus (SOL) and medial gastrocnemius (MG). The exercise consisted …
A Comparison Of Training Methods To Increase Neck Muscle Strength [Thesis], Ryan Stuart Price
A Comparison Of Training Methods To Increase Neck Muscle Strength [Thesis], Ryan Stuart Price
Theses : Honours
The purpose of this study WHS to determine if increases in isometric cervical muscle strength and range of movement (ROM) generated from ten weeks of training on the Multi-cervical unit (MCU) is significantly greater than the increase gained by training with the dynaband. The high rate of neck injury in the Air Force from pilots exposed to high +Gz force has instigated this research. 32 healthy subjects were split into three groups, with one group as the control, one group training on the MCU and one group training on the dynaband. Training groups completed ten weeks of resistance training in …
Development Of A Chromatographic Method For The Analysis Of Carbohydrates In Posidonia Coriacea In Artificial Cultures, Olivia J. Oldfield
Development Of A Chromatographic Method For The Analysis Of Carbohydrates In Posidonia Coriacea In Artificial Cultures, Olivia J. Oldfield
Theses : Honours
Carbohydrates in P. coriacea leaves were analysed to determine if, when in artificial culture, they were unable to replenish their carbohydrate stores once the seed starch reserve was consumed. While no evidence was found to suggest that this was happening, other findings were made. Soluble carbohydrates determined in P. coriacea were sucrose, fructose, glucose, trehalose, myo-inositol and mannitol. However, mannitol was only found in in situ plants sampled in June. This may be due to high epiphyte coverage elevating plant stress and therefore mannitol levels. P. coriacea grown in tissue culture has soluble carbohydrate levels up to 20-fold higher than …
An Exploration Of Relationships Between Environmental Change And Place Identity: An Analysis Of Personal Stories From The South Coast Of Western Australia, Ruth E. Rogan
Theses : Honours
The complex relationships between people and places have been investigated by philosophic and scientific writers of the 19th and 20th centuries and more recently by researchers within the discipline of environmental psychology. A plethora of concepts have been developed to describe the relationship between people and their environments, including place identity and place attachment. Complex relationships exist between place identity, place attachment and the physical environment. Despite this, research situated within the discipline of environmental management, which addresses changes within the biophysical environment, rarely considers the psychological impacts of such change on individuals interacting within those environments. This study investigates …
The Short Term Effects Of A Fire Fighting Foam And Fire Retardant On Selected Flora From Australia's Southwest, Andrew B. Kennedy
The Short Term Effects Of A Fire Fighting Foam And Fire Retardant On Selected Flora From Australia's Southwest, Andrew B. Kennedy
Theses : Honours
Chemical fire suppressants arc used extensively throughout Australia's Southwest to contain and suppress wildfires. Despite several studies being conducted into their effects on terrestrial vegetation in North America and Eastern Australia, where a variety of significant effects were found, no such investigation has been carried out in Australia's Southwest. This study examined the short-term effects of a fire fighting foam and fire retardant on selected flora from Australia's Southwest. Various concentrations of fire fighting foam and fire retardant were applied to seeds and seedlings of several native species. Native species were chosen for their high abundance and widespread distribution throughout …
Improving Management Of Nuisance Midges (Chironomidae: Diptera) In Perth (Western Australia) Wetlands Based On Their Response To Temperature And Seditment Type, Kirsty Suffell
Theses : Honours
The eutrophication of wetlands has created ideal breeding and growth conditions for certain species of Chironomidae (midge). In urban areas, high abundances can cause adult midges to become a nuisance to nearby residents. The shallow and often eutrophic wetlands of Perth (Western Australia) provide ideal conditions for the growth of certain Chironomid species, resulting in common nuisance problems. To control nuisance plagues a range of management options are available, including light traps, biological controls, insect growth regulators and pesticides. In Australia, Abate00 is the only registered pesticide for the control of midges. Little is known about the life histories of …
Does Plant Morphology Influence Fish Fauna Associated With Seagrass Meadows?, Michael C. Burt
Does Plant Morphology Influence Fish Fauna Associated With Seagrass Meadows?, Michael C. Burt
Theses : Honours
Three distinct seagrass habitats were sampled to determine whether fish assemblages differed between meadows comprising of different seagrass species with different morphological characteristics and whether plant morphology influences species assemblages. Three seagrass habitats consisting of Posidonia sinuosa, Posidonia coriacea and meadows of a mixture of P. coriacea and Heterozostera tasmanica in the Success Bank region, off the coast of Fremantle, Western Australia were selected. For each habitat, sampling was carried out using a 1m wide beam trawl over a distance of 50m at six replicated locations, on three occasions between June and September 2002. Seagrass samples were collected at each …
Invasion Of Indigenous Vegetation In South-Western Australia By Leptospermum Laevigatum (Gaertn.) F. Muell. (Myrtaceae), Anya Lam
Theses : Honours
The current paradigm of biodiversity conservation requires the assessment of alien plant invaders, and their potential negative impacts on indigenous species and communities. Leptospermum laevigatum (Gaertn.) F. Muell. (Victorian tea tree/ Coast tea tree) is indigenous to eastern Australia. It has invaded ecosystems within its natural biogeographic range, within new ranges in Australia and overseas. The species is listed as a high priority weed in the Environmental Weed Strategy for Western Australia. However, the basis for its listing has been casual observation rather than focussed research. This study of L. laevigatum is unique in being the first to …
The Relationship Between Movement Confidence And Level Of Physical Activity In Older Adults, Alastair Stewart
The Relationship Between Movement Confidence And Level Of Physical Activity In Older Adults, Alastair Stewart
Theses : Honours
The movement confidence model proposed by Griffin and Keogh (1982) determined level of movement confidence by including sensations of enjoyment and fear of harm as well as perceived competence. Whilst this has been studied in children there is a paucity of research into older Australian adults. For the purposes of this study Australian older adults were defined as people over 50 years of age, permanently residing in Australia. Therefore, this study had four major purposes. The first purpose was to identify the relative contributions of (a) perceived competence (PC), (b) enjoyment (EN), and (c) fear of harm (FH) to movement …