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1

Heywood, Chloe Anne. "Subsurface microbial communities of the Waikato Basin, New Zealand." Thesis, Cardiff University, 2008. http://orca.cf.ac.uk/54753/.

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The aim of this study was to understand the microbial communities of deep terrestrial subsurface environments associated with high-organic-matter coal and lignite bearing strata. A sedimentary sequence from the Waikato Basin, New Zealand consisting of interbedded organic-rich layers, sandstones, siltstones and mudstones was drilled. Viable microbial communities were enumerated using most probable number (MPN) series with media selective for a) general heterotrophs b) sulfate-reducing bacteria c) iron(III)- and manganese(IV)-reducing bacteria d) acetogens e) methanogens and f) lignite-reducing bacteria. Subcultures were made from positive MPN enrichment cultures and representative strains were isolated from the sediments. Selected isolates were tested for their metabolic capabilities and physiological characteristics and Molecular genetic techniques were used to investigate the microbial diversity. Viable counts for active metabolic groups ranged from 104 to 105 cells gsed"1 and representatives from 5 bacterial phyla (Proteobacteria, Actinobacteria, Firmicutes, Bacteroidetes and Acidobacterid) were detected. Community size and diversity did not decrease with depth and viable microbes were present in deeply buried and previously heated and possibly sterilised sediments. A large and diverse set of isolates was obtained from the sediments. The collection included several genera previously detected in the deep terrestrial biosphere (Acetobacterium, Sporotalea, Microbacterium, Acidovorax, Sphingomonas) and also genera not typically associated with the deep biosphere (sulfurospirilium). Isolates had a wide range of metabolic capabilities and the collection includes both fermentative and respiring strains. There was also a good overlap between organisms detected using molecular genetic methods and cultivated organisms indicating that these may be important bacteria in situ. There is a substantial and diverse community of Bacteria inhabiting the sediments of the Waikato Basin. Although Archaea were detected in the sediments, none were isolated. The presence of these microbial communities implies that carbon and energy sources must persist within these sediments over millions of years.
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2

Allan, Mathew Grant. "Remote Sensing of Water Quality in Rotorua and Waikato Lakes." The University of Waikato, 2008. http://hdl.handle.net/10289/2292.

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Remote sensing has the potential to monitor spatial variation in water quality over large areas. While ocean colour work has developed analytical bio-optical water quality retrieval algorithms for medium spatial resolution platforms, remote sensing of lake water is often limited to high spatial resolution satellites such as Landsat, which have limited spectral resolution. This thesis presents the results of an investigation into satellite monitoring of lake water quality. The aim of this investigation was to ascertain the feasibility of estimating water quality and its spatial distribution using Landsat 7 ETM+ imagery combined with in situ data from Rotorua and Waikato lakes. For the comparatively deep Rotorua lakes, r² values of 0.91 (January 2002) and 0.83 (March 2002) were found between in situ chlorophyll (chl) a and the Band1/Band3 ratio. This technique proved useful for analysing the spatial distribution of phytoplankton, especially in lakes Rotoiti and Rotoehu. For the more bio-optically complex shallow lakes of the Waikato, a linear spectral unmixing (LSU) approach was investigated where the water surface reflectance spectrum is defined by the contribution from pure pixels or endmembers. The model estimates the percentage of the endmember within the pixel, which is then used in a final regression with in situ data to map water quality in all pixels. This approach was used to estimate the concentration of chl a (r² = 0.84). Total suspended solid (TSS) concentration was mapped using the traditional Band 3 regression with in situ data, which combined atmospherically corrected reflectance for both images into a single relationship (r² = 0.98). The time difference between in situ data collection and satellite data capture is a potential source of error. Other potential sources of error include sample location accuracy, the influence of dissolved organic matter, and masking of chl a signatures by high concentrations of TSS. The results from this investigation suggest that remote sensing of water quality provides meaningful and useful information with a range of applications and could provide information on temporal spatial variability in water quality.
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3

Brick, Samuel William. "MEM Project - Tender Internship Waikato Expressway (Tamahere to Cambridge Section)." Thesis, University of Canterbury. Engineering Management, 2013. http://hdl.handle.net/10092/7446.

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The following report gives an overview of my internship completed with HEB Construction Limited on the tender for Tamahere to Cambridge section of the Waikato Expressway. The focus of the internship was on quantity surveying and the process of tendering. An emphasis was also put on investigating and understanding aspects of tendering related to the New Zealand Transport Authority. After analysing the work completed during the internship, the main finding was that efficiency during the early stages of quantity surveying can be increased. In the future, this will be achieved through replacing scale rulers with computer software which simplify many of the time consuming processes currently used to capture the information on design drawings.
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Dewstow, Ross Albert. "Using the Internet to Enhance Teaching at The University of Waikato." The University of Waikato, 2006. http://hdl.handle.net/10289/2241.

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The University of Waikato brought the Internet to New Zealand, was one of the first Universities in New Zealand to graduate students who had completed a bachelor's degree online, and recently won an award for innovative use of video software in an online classroom. The video software was created by a company that had its beginnings within the University. However, the use of the Internet for teaching and learning in the University has reached a plateau in the last few years, as measured by the daily page views of the online platform (Moodie, 2004), the number of courses taught online and staff teaching online remaining fairly constant. This thesis sets out to investigate why the use of online teaching at the University has not increased to a point where a majority of staff are using online teaching to at least supplement their classroom teaching. Previous research into online teaching and learning focused heavily on technology barriers and lack of access to computers and the Internet. It is the position of the researcher that this lack of access is no longer a valid reason for academics not to use online environments for teaching and learning in a tertiary environment. This study hypothesized that enhancing their teaching using online technologies may be related to the culture of different subjects, disciplines and Schools of study. Accordingly three groups of lecturers from different Schools within the University were invited to participate in focus group interviews. Questions asked were related to their approach to teaching in their subject areas, the culture of their Schools and the University, as well as their reflections on teaching online. The study found that there was a strong relationship between the use of online technologies and subject areas as well as the culture that exists within the School of study. The influence of University management on the use of online technologies was also highlighted. But more surprising was the relationship between trained teachers in the University, and their uptake and use of online technologies. To take advantage of the changing student population, with their greater awareness and use of computing and new technologies, the University of Waikato, and indeed many other similar institutions, are now at a technological and educational crossroad. Decisions need to be made by senior management regarding the importance of the Internet and emerging media technologies in shaping the teaching and learning environment of tomorrow's University.
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5

Dewstow, Ross. "Using the internet to enhance teaching at the University of Waikato /." Click here to download thesis from Australasian Digital Theses Program, 2006. http://adt.waikato.ac.nz/public/adt-uow20060926.111717/index.html.

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6

Strang, Daniel Rodney. "Engineering Geological Characterisation and Slope Stability Assessment of Whitehall Quarry, Waikato." Thesis, University of Canterbury. Geological Sciences, 2010. http://hdl.handle.net/10092/5617.

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Whitehall Quarry is located 4 km east of Karapiro, near Cambridge within the Waikato District. Current quarrying operations produce between 150,000 and 300,000 tonnes of aggregate for use in the surrounding region. This study is an investigation into the engineering geological model for the quarry and pit slope stability assessment. Pit slope stability is an integral aspect of quarrying and open-pit mining since slopes should be as steep as possible to minimise waste material which needs to be removed, yet shallow enough to minimise potential hazards to personnel and equipment below pit slopes. This study also assesses the stability of complex wedge located within the north western corner of the quarry. Initial estimates approximate a wedge mass volume of 500,000 m3; failure was triggered during the late 80‟s due a stripping programme at the head of the mass. Field and laboratory investigations were carried out to identify and quantify engineering geological parameters. Photogrammetric and conventional scanline analytical techniques identified two domains within the quarry divided by the Main Quarry Shear Zone (MQSZ). Discontinuity orientations are the key differences between the two domains. Bedding planes appear to have slightly different orientations and each domain has very different joint sets identified. Point load, shear box, ring shear testing approximated intact rock strength, shear strength and fault gouge behaviour properties. The main geological units at the quarry are greywacke sandstone interbedded with argillaceous mudstone. Uniaxial compressive strength estimates approximated the intact rock strength for sandstone to be between 30 and 230 MPa depending on weathering grade, while the strength of mudstone was approximated at 5 MPa. Residual shear strength was carried out to estimate the approximate effective angle of internal friction for both a smooth UW-SW sandstone joint and a mudstone bedding plane, these being 37o and 34o respectively. Laboratory testing on fault gouge indicated an approximate angle of internal friction of 13o and the presence of kaolinte and montmorillonite was identified. Pit slope stability analysis utilised the Markland test for identification of potential failures within slopes. Wedge failures are the most common potential failure type, then planar failures along bedding planes. Potential failures are most likely to be less than 10 m3 due to the high fracture frequency and low persistence of common joint sets. However, larger failures in the order of 100 m3 are possible along fault and bedding planes where persistence is typically greater than 20 m. Kinematic analysis of the Northern Wedge Failure estimated a mean factor of safety of 0.97. Currently the wedge is assessed as marginally unstable. Electronic distance measurement over 11 months recorded an approximate mean wedge velocity of 19 mm/month. Sensitivity analysis identified pore water pressure as a key parameter. De-watering the wedge via a series of inclined drainage holes appears to be the best mitigation method. However, the mine and monitor approach is also acceptable but with anticipated risk to personnel and equipment. Monitoring instrumentation such as a wireline and crack-meters should be implemented.
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7

Hall, Steven Leon. "Controls on deposition of coal and clastic sediment in the Waikato coal measures." Thesis, University of Canterbury. Geological Sciences, 2003. http://hdl.handle.net/10092/1516.

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Coal seams in the Waikato Coal Measures can vary significantly in thickness over distances of hundreds of meters to kilometers. Previously, the primary depositional controls on these variations have been inferred to be syn-depositional normal faulting and pre-depositional paleotopography. The data presented in support of these models are typically equivocal and which, if any, of these processes provide the principal control on the geometry and spatial distribution of coal seams in the Waikato Coal Region is uncertain. This study utilizes a large database of drill-logs, seismic-reflection lines and mine exposures in four areas (Huntly, Maramarua, North HuntlylWaikare and Rotowaro Coalfields) to test whether syn-depositional faulting and/or paleotopography influence coal seam architecture. These data were used to construct cross sections across faults and basement topography, which in turn, offer information on the relative timing of faulting and coal measure deposition, together with information on the spatial relations between seam thicknesses, faulting and paleotopography. Cross sections and isopach maps together with examination of spatial and temporal variations in fault displacements reveal that syn-depositional normal faulting had little or no impact on the deposition of the Waikato Coal Measures. Only in the Maramarua study area was any evidence found of fault control on coal measure deposition, with the Landing Fault accruing displacement between deposition of the Kupalrupa Seam and the end of coal measure sedimentation. The vast majority of faults in the Waikato Coalfield were, however, active following coal measure deposition. For example, the Foote, Kimihia and Pukekapia faults show evidence of displacement accrual, which commenced during deposition of the Mangakotuku Formation (37-35 Ma BP). The duration of this episode of faulting is difficult to determine, but may have ceased about 30 Ma ago. In addition, a number of faults (e.g. Foote Fault) display evidence oflate stage extension during the last 5 Ma. Given the lack of stratigraphic evidence for fault displacements during deposition of coal measures, it is suggested that the Mangakotuku and Waipuna basement scarps are erosional rather than tectonic features. Cross sections, together with structure contour and isopach maps in each of the four study areas examined, indicate that basement topography was the dominant control on the spatially variable accumulation of peat. These data show coal seams both thinning into, and away from, topographic lows. To account for this observation a model is proposed, in which peat accumulation is controlled by basement relief and sediment supply to parts of the depositional system. In the model it is postulated that the Waikato Coal Measures depositional system was a continuum between two end members. In one end member, with a high sediment supply, sediment is channeled into the lowest topographic areas and peat accumulates mainly on topographic highs. In the other end member, with little or no sediment supply, peat accumulates to its greatest thickness in areas of relatively low topography, in addition to on basement ridges. In the Rotowaro and North Huntly/Waikare study areas, the thickest peat developed on basement highs and the lows acted as a conduit for sedimentation. On basement highs, peat mires were largely sheltered from clastic sediment influx. In the Huntly East and Maramarua study areas, the thickest peat accumulated in basement lows, with comparable clastic sedimentation in highs and lows. The proposed model has application to other coalfields where peat accumulated on an undulating topographic surface and sediment supply was channelised. Prediction of coal seam thickness, as well as lithological types, is crucial in coal exploration and development. The methodology developed and employed in this study can be applied to other basins to access and model coal and clastic sediment distribution.
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8

Burnett, Zavier. "Keeping Chooks at Home in the Waikato: Exploring Postcolonial, Feminist and Kaupapa M ori Perspectives." The University of Waikato, 2006. http://hdl.handle.net/10289/2513.

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This thesis considers the narratives of eight M ori chook keepers from the Waikato rohe, Aotearoa. The Waikato rohe has been selected due to its significant history of M ori horticultural and agricultural practises, including chook keeping. I build on the growing corpus of m tauranga about indigenous studies. Using a postcolonial, feminist and Kaupapa M ori theoretical framework, I undertook five semi-structured interviews and one focus r p with M ori kaum tua. This thesis does not attempt to represent all M ori. There may be considerable difference between wh nau, hap and iwi practices. However, the rangahau provides insights into the views of eight individuals and their experiences with chooks. I have also utilised Country Calendar (1970; 1977a; 1977b and 1980) episodes and children's pukapuka such as Nanny Mihi's Garden (Drewery 2002) for the purposes of discourse analysis. By listening to these stories, kaupapa including race, class and ethnicity emerge that affect the participants' everyday lives as chook keepers. The participants view chooks in a variety of ways. First, as a means of food production. By integrating chooks into their communities, the participants are able to provide a nutritious and low-cost kai source for themselves and their wh nau. This attempts to at least in part address their poverty problems. Second, as a hybridised P keh and M ori kararehe. Third, as hysterical, comical, silly and helpless. I explore these issues within the broader context of colonial, neocolonial and anticolonial practices.
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9

West, David William. "Responses of wild freshwater fish to anthropogenic stressors in the Waikato River of New Zealand." The University of Waikato, 2007. http://hdl.handle.net/10289/2601.

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To assess anthropogenic impacts of point-source and diffuse discharges on fish populations of the Waikato River, compare responses to different discharges and identify potential sentinel fish species, we sampled wild populations of brown bullhead catfish (Ameiurus nebulosus, (LeSueur, 1819)), shortfin eel (Anguilla australis Richardson, 1848), and common bully (Gobiomorphus cotidianus McDowall, 1975) in the Waikato River. Sites upstream and downstream of: geothermal; bleached kraft mill effluent (BKME); sewage and thermal point-source discharges were sampled. At each site, the population parameters, relative abundance, age structure and individual indices such as: condition factor; and organ (gonad, liver, and spleen) somatic weight ratios; and number and size of follicles per female were assessed. Indicators of fish residence and in some cases exposure to contaminants in discharges were analyzed. Bile chemistry of brown bullhead and shortfin eel was assayed, liver and muscle metal levels were analyzed for brown bullhead and shortfin eel respectively, and stable isotopes of C and N in common bully were measured. Bile, metal and isotopic signatures gave strong evidence that fish had been resident at sites for some time before sampling. Signatures of bile and metal contaminants showed contamination was localised to discharge areas. Gradients in stable isotopes in common bully showed evidence of changes in water sources and anthropogenic effects along the river. Biochemical variables, hepatic ethoxyresorufin-O-deethylase (EROD) and plasma steroids indicated exposure and response of brown bullhead and shortfin eel to pulp and paper contaminants at the BKME site. Physiological (blood) variables showed fish largely responded in a predictable way to elevated water temperatures at discharge sites at time of sampling, however total haemoglobin of brown bullhead and common bully blood failed to increase at the BKME site despite elevated temperatures and low dissolved oxygen. Growth rates, condition factor, age structure, and gonadosomatic index (GSI) suggest that discharges with significant heat or nutrients benefit brown bullhead despite physiological impairment at the BKME site. Shortfin eel individuals also benefited from heated water discharges. No consistent impacts on common bully health were obvious at individual discharge sites, or cumulatively along the river due to the gradual deterioration in water quality downstream. Common bully individuals also benefited from heat in discharges but lack of juveniles at sites where numerous juvenile brown bullhead were found, suggest that unlike brown bullhead populations, common bully populations were not responding with significant recruitment. Although I found little evidence of toxic effects of discharges on shortfin eel, caution is required in assessing the potential of contaminants to impact eel populations due to the life history of shortfin eel, and exploited nature of populations. For example, reproductive damage suffered by adult eels may not immediately manifest itself in the effected population due to temporal delays in gonadal maturation, and recruitment, and single panmictic populations supplementing recruitment of impacted populations. Distinct changes in population parameters at each of the paired sites and changes in individual variables showed that fish responded to discharges. The range of responses in species suggests different sensitivity to contaminants and amount of benefit which each species receives from heat in discharges. In these terms shortfin eel would be the most resistant, then brown bullhead and lastly common bully. Interpretation of population-level impacts at the geothermal and BKME discharge sites is made difficult due to benefits of additional heat. There is also the possibility that detection of sub-lethal or chronic effects on sensitive juvenile life-stages may be being hidden by compensatory density population responses. Responses and life history of common bully made them the preferred indicator species of the three species sampled, and supported overseas examples using small-bodied fish species as sentinels.
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Jay, Grace Mairi McIntyre. "Symbolic order and material agency a cultural ecology of native forest remnants on Waikato dairy farms /." Connect to this title online, 2004. http://adt.waikato.ac.nz/public/adt-uow20060125.120921/.

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11

Jay, Grace Mairi M. "Symbolic order and material agency: A cultural ecology of native forest remnants on Waikato dairy farms." The University of Waikato, 2004. http://hdl.handle.net/10289/2603.

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Loss of native biological diversity is a world-wide problem of growing international concern. One of the main causes of native biodiversity loss is destruction and degradation of native habitat through land development for agriculture. The Waikato region is an example of the destruction and degradation of native habitat in association with the development and intensification of farming, including dairy farming. This thesis explores cultural reasons for the loss of native forest in the Waikato region, and reasons why fragments of native forest remain. The research involves a participant observation study of 'typical' dairy farm families for 9 months of the dairy year, in-depth interviews of dairy farmers who have protected a significant proportion of their land for conservation of native habitat, a questionnaire of dairy farmers, and an examination of dairy farm magazines and other literature to identify the values and attitudes that motivate dairy farmers in relation to land management and protection of native habitat. The title of the thesis suggests two elements that are important for understanding the loss and persistence of native forest in Waikato's farmed landscapes. Symbolic reason refers to the values, attitudes and perceptions of farmers that derive from socio-political and economic forces which encourage productivist practises that leave little opportunity for native forest to survive. Material agency refers to the local circumstances of particular farms and individual people which enable native forest to persist. The thesis argues that persistence of native forest depends on the idiosyncrasies of material circumstance in the face of relentless pressure to transform the production landscape for economic purposes. The thesis concludes with a suggestion that policies to assist survival of native habitat in farmed landscapes need to include ones that encourage the odds in favour of fortuitous circumstance. In the face of globalised economic pressures, policies for conservation of native biodiversity need to involve a 'portfolio' of measures that apply to individual landowners and the wider rural community by recognising, assisting and rewarding management for non-production values.
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Kuske, Tehani Janelle. "Fluxes of Energy and Water Vapour from Grazed Pasture on a Mineral Soil in the Waikato." The University of Waikato, 2009. http://hdl.handle.net/10289/2772.

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The eddy covariance (EC) technique was used to measure half hourly fluxes of energy and evaporation from 15 December 2007 to 30 November 2008 at the Scott Research Farm, located 7 km east of Hamilton. Many other supporting measurements of climate and soil variables were also made. The research addressed three objectives: 1. To examine the accuracy of the eddy covariance measurement technique. 2. Understand the surface partitioning of energy and water vapour on a diurnal to annual timescale. 3. Compare measurements of evaporation to methods of estimation. Average energy balance closure at Scott Farm was deficient by 24%, comparable to published studies of up to 30%. Three lysimeter studies were carried out to help verify eddy covariance data. These resulted in the conclusions that; 1) lysimeter pots needed to be deeper to allow for vegetation rooting depths to be encompassed adequately; 2) forcing energy balance closure was not supported by two of the studies (summer and winter); 3) latent heat flux (λE) gap filling of night time EC data during winter over estimated values by about 10 W m-2; and 4) the spring lysimeter study verified eddy covariance measurements including the closure forcing method. Some uncertainty still exists as to the accuracy of both lysimeter and EC methods of evaporation measurement because both methods still have potential biases, however for the purpose of this study, it would appear data are sufficiently accurate to have confidence in results. Energy and water vapour fluxes varied on both a diurnal and seasonal timescale. Diurnally, fluxes were small or negative at night and were highest during the day, usually at solar noon. Seasonally, spring and summer had the highest energy and evaporation fluxes and winter rates were small but tended to exceed available energy supply. Evaporation was constrained by soil moisture availability during summer and by energy availability during winter. Estimated annual evaporation at Scott Farm was 755 mm, 72% of precipitation. Two evaporation models were compared to eddy covariance evaporation (EEC) measurements; the FAO56 Penman-Monteith model (Eo) and the Priestley-Taylor model (EPT). Both models over estimated evaporation during dry conditions and slightly under estimated during winter. The α coefficient that is applied to EPT was not constant and a seasonally adjusted value would be most appropriate. A crop coefficient of 1.13 is needed for Eo measurements during moist conditions. Eo began over estimating evaporation when soil moisture contents dropped below ~44%. A water stress adjustment was applied to both models which improved evaporation estimates, however early onset of drying was not able to be adjusted for. The adjusted Eo model is the most accurate overall, when compared to EEC.
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Waipara, Nicholas William. "A study of the taxonomy and pathogenicity of microfungi in the roots of Waikato pasture plants." Thesis, University of Canterbury. Plant and Microbial Sciences, 1997. http://hdl.handle.net/10092/6557.

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A diverse and characteristic mycoflora was obtained from Waikato pasture plant root tissues. In general these fungi were not specific to host, site or soil type and although forming a natural ecological group were diverse in their systematic affinities. The fungi examined were dominated by hyphomycete and zygomycete genera, sterile fungi and coelomycetous pycnidial fungi. The sterile dark and hyaline sterile fungi isolated comprised almost 40% of isolates and a variety of methods were utilised to induce sporulation as well as separate this assemblage of amorphous isolates into 15 taxonomic groups on the basis of their morphological and physiological characters. Two sterile groups were induced to sporulate in culture and were identified as Thozetella tocklaiensis and a species of Phialophora. Most fungal species including the sterile fungi were tested for pathogenicity to pasture species and found to be non-pathogenic root-colonising fungi, however, a minority of fungi present in Waikato pastures were pathogenic to both grass and legume seedlings and plants. Pathogenicity of these fungi was demonstrated by a series of laboratory and pot experiments where seed emergence, plant dry weight yield and root growth were reduced, while disease symptoms and root death were increased compared to the controls and those inoculated with non-pathogenic fungi. Pot trials also demonstrated that temperature and moisture could affect the pathogenicity of pasture root pathogens. The potential importance of fungi in a pastoral agricultural ecosystem is discussed.
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Blair, Jennifer Marie. "An investigation of koi carp (Cyprinus carpio) movement in the Waikato region using laser ablation otolith microchemistry." The University of Waikato, 2008. http://hdl.handle.net/10289/2765.

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The koi carp Cyprinus carpio is an invasive fish that has reached high numbers and biomass in the North Island of New Zealand, particularly in the Waikato region. This species has a variety of negative effects on aquatic ecosystems, increasing turbidity, uprooting aquatic macrophytes, and affecting water column nutrient levels. Recent research in Australia and New Zealand has shown that adult carp, though largely restricted to small scale movements, are capable of moving long distances. Movement in adult carp may be underestimated by these studies, and comparatively little is known about the movement of smaller carp. This study examined the feasibility of using laser ablation otolith microchemistry to track koi carp movement and identify spawning areas. Water samples from six locations (Lake Waahi, Lake Whangape, Lake Waikare, the Whangamarino River, and the Waikato River at Aka Aka and Rangiriri) were analysed using inductively coupled plasma mass spectrometry (ICP-MS). Significant differences between sites were found in the water concentrations of many elements. Koi carp were collected from the above locations, as well as from Opuatia Stream, Pungarehu Stream, the Maramarua River and Lake Hakanoa. The elemental concentrations in the asteriscus otoliths were analysed using laser ablation inductively coupled plasma mass spectrometry (LA‐ICP-MS). Elemental concentrations in the edges and nuclei of adult koi carp and the edges of young-of-the-year (YOY) koi carp were significantly different between capture sites. No significant differences were found in elemental concentrations between sites in the nuclei of YOY koi carp. A discriminant function analysis (DFA) was carried out using the otolith edge elemental signatures of koi carp. The model used Ba, Sr, Mg, Rb and Zn concentrations to differentiate between four capture locations: the Waikato River, Pungarehu Stream, Lake Waahi, and Lake Waikare and Pungarehu Stream. The DFA was able to correctly predict the capture location of 82% of koi carp using their otolith edge elemental signatures. The classification functions created using koi carp otolith edge signatures were then used as a training set to classify otolith nucleus signatures. The otolith nuclei of 80% of YOY koi carp were classified to their site of capture, suggesting they had not moved between locations. The majority of adult koi carp caught at Lake Waikare, Whangamarino River, Pungarehu Stream and Opuatia Stream had nucleus signatures matching their capture sites, indicating that these fish originated from their capture location. Koi carp from other sites likely moved there from another location. The majority of adult koi carp (88%) caught at the Waikato River at Rangiriri had otolith nucleus signatures matching Lake Waikare and Pungarehu Stream. Adult koi carp caught at Lake Waahi and the Waikato River at Aka Aka had otolith signatures corresponding to a range of locations. While some areas (Lake Waikare, Pungarehu Stream) appear to have resident koi carp populations that likely originated there, others (Lake Waahi, the Waikato River) appear to have koi carp populations of mixed origin. These results indicate that Lake Waikare, Pungarehu Stream and the Whangamarino River may be important sources of koi carp recruits in the lower Waikato region.
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Mahuta, Dean P. S., and n/a. "Ko taku rau kotahi." University of Otago. Te Tumu - School of Maori, Pacific and Indigenous Studies, 2005. http://adt.otago.ac.nz./public/adt-NZDU20070430.115046.

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Raupatu (conquest of land) has been and still is a threat to the sovereignty and self-management of the Maori people. For the people of Waikato, raupatu has had such a significant impact that it has become a part of the people's identity. The New Zealand Land Wars of the 1860s signalled the beginning of the troubles for Waikato that would plague them for generations. Many Waikato people died for the land that had once nourished them, which was 'stolen' by the Crown and its colonial forces under the guise of 'confiscation' by way of the New Zealand Settlement Act 1863. This thesis examines raupatu in relation to the Waikato people, and the effects raupatu has had on them. This thesis also illustrates the connection between the Waikato people and whenua tupu (ancestral lands) through countless generations of people who committed their lives to the struggle to have their lands returned as proclaimed in the decree 'i haere whenua atu, me hoki whenua mai.' This decree is examined in relationship to the Deed of Settlement 1995 whereby the Crown addressed the grievances of the Waikato people and some hope was once again instilled within the people.
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Dravitzki, Stacey Maree. "Precipitation in the Waikato River catchment : a thesis submitted to the Victoria University of Wellington in fulfilment of the requirements for the degree of Doctor of Philosophy in Geophysics /." ResearchArchive@Victoria e-thesis, 2009. http://researcharchive.vuw.ac.nz/handle/10063/955.

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Ritchie, Helen, of Western Sydney Hawkesbury University, and Faculty of Environmental Management and Agriculture. "Beyond the fences : co-ordinating individual action in rural resource management through Landcare : a case study of managing non-point source discharges to water in Waikato, New Zealand." THESIS_FEMA_ARD_Ritchie_H.xml, 1998. http://handle.uws.edu.au:8081/1959.7/437.

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This study addresses the central problem of how the behaviour of individuals may be co-ordinated to manage collective natural resources, and in particular, to what degree this can be achieved through voluntary, community based means under a free market policy regime. This question was explored by researching how local groups known as Landcare, or Care groups, are managing waterways in Waikato, New Zealand, and specifically by examining their effectiveness in controlling non-point source contaminants to water originating from agricultural land.An action research approach was used to investigate research questions regarding what motivates actors to support activity to enhance water quality, the effectiveness of such activity in addressing non-point source discharges to water, and the equity issues which are associated with environmental management through Landcare. This study suggests that neo-liberal philosophies of governance, while favouring voluntary resource management, disregard the conditions which, in practice, underpin effective and equitable examples of this type of activity. A call is therefore made for a more active role for government, in directly supporting local action, in compensating for the impacts of free-market policies on natural resource use, and in facilitating the representation of the diversity of views in environmental management. Action research, participatory planning, and other learning based and communicative processes could be usefully employed to guide and inform such interventions
Doctor of Philosophy (PhD)
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18

Ritchie, Helen. "Beyond the fences : co-ordinating individual action in rural resource management through Landcare : a case study of managing non-point source discharges to water in Waikato, New Zealand /." View thesis View thesis, 1998. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030507.163239/index.html.

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Cadogan, Bernard Francis. "Constituting the settler colony and reconstituting the indigene : the native administration and constitutionalism of Sir George Grey K.C.B. during his two New Zealand governorships (1845-1853, 1861-68) until the outbreak of the Waikato War in 1863." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:7040311f-6a6e-44d2-be47-b1d895380099.

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Sir George Grey (1812-1898) served as Governor of South Australia, of New Zealand twice, and of the Cape Colony. This thesis explains his policy for the first time for a history of the political ideas of colonization. Grey introduced the policy of racial amalgamation to settler colonies after the 1837 Report of the Select Committee into Aboriginal Affairs, that had advised the policy of segregation as had been North American policy under Sir William Johnson. This thesis demonstrates that Grey was a Liberal Anglican who had adopted neo-Harringtonian thought, and who introduced Jeffersonian native policy into British native policy. He practised the strategic theory of Antoine-Henri Jomini, applying it to native policy. Grey captured the monarchical constitution of the empire for what had been a settler policy of dissent to the segregation of indigenes that dated back to Tudor Ireland and early Viginia. Grey's distinctive intellectual practices were ethnograpical research and speculation, for which he enjoyed an international reputation, and the constitutional design of settler colonies, an activity he came to totally identify with. The thesis concentrates on his first New Zealand governorship (1845-53) and upon the resumption of his second New Zealand governorship (1861-68) because it was in that colony he first fully practised his native policy and participated in constitutional design, and into which he brought about a crisis of indigenous amalgamation on the eve of the Waikato War in 1863, having introduced full responsible government.
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20

Litchfield, Nicola Jane. "Structure and tectonic geomorphology of the Lowry Peaks Range-Waikari Valley District, North Canterbury." Thesis, University of Canterbury. Geology, 1995. http://hdl.handle.net/10092/6693.

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Structures of the Lowry Peaks Range - Waikari Valley district are complex. The majority comprise three members of a predominantly WSW -ENE striking major northwards-directed, leading edge imbricate thrust system, with associated angular, asymmetric fault-propagation folds. This system forms anomalously within a large NESW trending belt of structures characterising the entire east coast of north Canterbury, both onshore and offshore and terminates westwards against N-S striking, east facing fold-fault zone. The objectives of this study address the origin, geometry and kinematics of the interaction between these diversely trending systems. Stratigraphy and small-scale structures denote three periods of deformation, namely: i) Middle Cretaceous deformation of the basement rocks, ii) weak Middle Oligocene deformation associated with the inception of the plate boundary through the South Island, and iii) major Pliocene - Recent deformation that formed the majority of the above-mentioned structures. Stress tensor analyses within competent basement and limestone cover rocks suggest two sets of sub-horizontal compression, NE-SW and NW-SE, the former likely to relate to a localised earlier period of deformation, now overprinted by the latter. NW-SE oriented sub-horizontal compression correlates well with results from other parts of north Canterbury. The result of NW-SE compression on the W-E to WSW-ENE striking structures is a large component of oblique motion, which is manifest in four ways: i) movement on two, differently oriented splays rather than a single fault strand, ii) the development of a sinuous trace for a number of the major folds, whereby the ends are oriented normal to the compression direction, the centres parallel to the strike of the faults, iii) the development of a number of cross-folds, striking NNE-SSW and iv) the apparently recent development of a strike-slip component on at least one of the major thrust faults. The origin of the W-E, or WSW-ENE striking structures may be reactivation of Late Cretaceous faults, stratigraphic evidence for the existence of a "structural high" (the Hurunui High) over the majority of the area in the Late Cretaceous to Early Eocene times suggests the formation of a W-E trending horst structure, with a corresponding asymmetric graben to the south. The junction of WSW-ENE trending structures with N-S trending structures to the west centres on an alluvial-filled depression, Waikari Flat, into which the structures of the WSW-ENE trending imbricate thrust system plunge, locally curling to the SW at their ends to link with N-S trending structures to the south. Roof thrusting on two orientations, W-E and N-S, towards to SE is currently occurring above these structures. Currently the area is not highly seismically active, although a magnitude ~6.4 Ms earthquake in historic times has been recorded. The effects of tectonics on the drainage of the area does suggest that the majority of the systems, are still potentially active, albeit moving at a comparatively slow rate. The majority of the recent motion appears to be concentrated on the roof-thrusting occurring in Waikari Flat, and uplift along the Lowry Peaks Fault System. Increasing amounts of secondary movement on back-thrusts and cross fractures is also implied for western ends of the major imbricate thrust system. In contrast, the southern-most fault system appears to be largely sustaining dextral strike-slip motion, with some local folding in central portions.
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Hobbs, Yvette Anne. "Palaeoenvironments and biostratigraphy of early Miocene Waikari Formation and Mt Brown beds, North Canterbury, New Zealand." Thesis, University of Canterbury. Geological Sciences, 2010. http://hdl.handle.net/10092/6990.

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The Waikari Formation and Mount Brown Formation of North Canterbury represent inner to outer shelf deposits of siltstones, sandstones and limestones. The aim of this thesis was to integrate field observations, qualitative macrofossil and trace fossil data, and quantitative foraminiferal data to determine biostratigraphy, palaeoenvironments and reconstruct the palaeogeography of the Waipara/Waikari area through the Early Miocene. Multivariate data analysis of foraminifera data using Bray-Curtis two way and detrended correspondence analysis was key to determining original depositional environments. The Waikari Formation consists of blue grey siltstones and brown fine sandstones of Otaian age. In the study area three members were identified; Pahau Siltstone, Scargill Siltstone and Gowan Hill Sandstone. A key feature of the Pahau Siltstone is the high glauconite content and heavy bioturbation caused by the trace Zoophycos. The Scargill Siltstone is recognised by the lower glauconite content compared to the Pahau Siltstone and a change in dominant trace to Ophiomorpha. The Gowan Hill Sandstone contains light grey siltstones and brown fine sandstones. The faunal component of the Gowan Hill Sandstone includes brachiopods, bryozoa and bivalves; and is distinguished by higher faunal component compared to the two other members of the Waikari Formation. Multivariate analysis indicated that the Waikari Formation was deposited in mid to outer shelf water depths. The Mount Brown Formation is dominated by yellow sandstone and also contains the Whiterock Limestone, the discontinuous Onepunga Shell Beds, North Dean Limestone and Red Crag Limestone members that are late Otaian to Altonian in age. The Whiterock Limestone is a bryozoan rich limestone of Otaian age. Celleporaria papillosa are abundant along with branching bryozoans, and the abundance of bryozoa in the limestone is typical of a cooltemperate environment. The Onepunga Shell Beds are lenses of molluscan dominated cast limestone that was deposited in a mid-shelf environment that is Altonian in age. The North Dean Limestone is characterised by cross bedding and is Altonian in age. The limestone represents a higher energy depositional environment in inner shelf water depths with non crossbedded units from the midshelf. Foraminifera identified in the North Dean Limestone include Elphidium crispum crispum and Amphistegina sp, typical of inner to mid shelf environments in a warm subtropical, temperate depositional environment. The Red Crag Limestone members are Altonian in age and are characterised by brachiopod and molluscan fauna. Red Crag Limestone 1 has limited fauna occurs discontinuously. Red Crag Limestone 2 is characterised by brachiopod and molluscan fauna. The brachiopods are more dominant in this unit. Red Crag Limestone 3 reflects subtle changes from Red Crag Limestone 2 with molluscan fauna being more prominent. Overall, the Waipara-Waikari region, North Canterbury experienced a shallowing from outer shelf to mid shelf environment during the Otaian stage reflected in the Waikari Formation deposits, and mid to inner shelf depositional environment during the Altonian stage, reflected in the Mount Brown Formation deposits.
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22

Hopkins, Aareka. "The potential for Charophyte re-establishment in large, shallow, eutrophic lakes with special reference to Lake Waikare, New Zealand." The University of Waikato, 2006. http://hdl.handle.net/10289/2419.

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Lake Waikare is a large, shallow eutrophic lake devoid of submerged macrophytes. I investigated potential methods for re-establishing submerged macrophytes in the lake. Specifically, I subjected charophyte (Chara corallina) plantlets to two treatments of exposure in the lake (in areas exposed and sheltered from wind) to test for survival and growth under these conditions, and inside and outside fish exclosures to test for growth and survival in the presence of fish. While plantlets grew outside the exclosures in winter, their accumulated biomass over 21 days was less than protected plantlets. In winter, the accumulated biomass was lower outside than inside exclosures (by ~40%) at the sheltered site and was lower outside than inside exclosures (by 43%) at the exposed site. Overall, growth rates in winter were higher at the sheltered site (compared to the exposed site) by ~7%. In summer, charophyte accumulated biomass inside the exclosures increased by 85%, while at the sheltered site accumulated biomass increased by 58%. Outside the exclosures in summer the plantlets were completely removed at both sites. Overall, growth rates where higher at the exposed site than the sheltered site by 31%. Fish were responsible for the partial removal of plantlets in winter and total removal of plantlets in summer, and therefore affect the survival and growth of charophytes in Lake Waikare. The embayment at the sheltered site provides the best location in winter for re-establishment of charophytes from oospores because better growth rates were obtained there, and its sheltered location provides protection from severe wave action found at the exposed site. Oospores did not germinate after being submersed in the lake for 90 days due to heavy sedimentation. To induce an improvement in the present light climate, Alum was tested to determine its effectiveness and longevity for settling lake sediments to allow charophytes to establish and grow. Examining the settling rates of Lake Waikare sediments and water treated with Alum over a range of suspended sediment concentrations and time intervals, sediments settled faster with Alum than without for at least 15 days (at 200 g l^1 suspended sediment concentration) and it remained active to 60 days but at reduced effectiveness. At the other concentrations tested (100 g l^1 and 300 g l^1 suspended sediment concentration), Alum responses were insignificant. An improved light climate achieved by fish removal or Alum treatment will likely not be sufficient to permit the re-establishment of submerged macrophytes due to the turbid, algal-dominated state of the lake. The present nutrient and sediment levels, wave climate and fish influence must be mitigated so charophyte plantlets can be established.
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Burnett, Zavier. "Keeping chooks at home in the Waikato : exploring postcolonial, feminist and kaupapa Māori perspectives /." 2006. http://adt.waikato.ac.nz/public/adt-uow20060626.101221/index.html.

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24

West, D. W. "Responses of wild freshwater fish to anthropogenic stressors in the Waikato River of New Zealand." 2007. http://adt.waikato.ac.nz/public/adt-uow20070828.145414/index.html.

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25

Κανάς, Βασίλειος. "Ταξινόμηση καρκινικών όγκων εγκεφάλου με χρήση μεθόδων μηχανικής μάθησης." Thesis, 2010. http://nemertes.lis.upatras.gr/jspui/handle/10889/4579.

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Σκοπός αυτής της διπλωματικής εργασίας είναι να ερευνηθούν μέθοδοι μηχανικής μάθησης για την ταξινόμηση διαφόρων τύπων καρκινικών όγκων εγκεφάλου με χρήση δεδομένων μαγνητικής τομογραφίας. Η διάγνωση του τύπου του καρκίνου είναι σημαντική για τον κατάλληλο σχεδιασμό της θεραπείας. Γενικά η ταξινόμηση καρκινικών όγκων αποτελείται από επιμέρους βήματα, όπως καθορισμός των περιοχών ενδιαφέροντος (ROIs), εξαγωγή χαρακτηριστικών, επιλογή χαρακτηριστικών, ταξινόμηση. Η εργασία αυτή εστιάζει στα δύο τελευταία βήματα ώστε να εξαχθεί μια γενική επισκόπηση της επίδρασης των εκάστοτε μεθόδων όσον αφορά την ταξινόμηση των διαφόρων όγκων. Τα εξαγόμενα χαρακτηριστικά περιλαμβάνουν χαρακτηριστικά φωτεινότητας και περιγράμματος από συμβατικές τεχνικές απεικόνισης μαγνητικής τομογραφίας (Τ2, Τ1 με έγχυση σκιαγραφικού, Flair,Τ1) καθώς και μη συμβατικές τεχνικές (Μαγνητική τομογραφία αιματικής διήθησης ). Για την επιλογή των χαρακτηριστικών χρησιμοποιήθηκαν διάφορες μέθοδοι φιλτραρίσματος, όπως CFSsubset, wrapper, consistency σε συνδυασμό με μεθόδους αναζήτησης, όπως scatter, best first, greedy stepwise, με τη βοήθεια του πακέτου Waikato Environment for Knowledge Analysis (WEKA). Οι μέθοδοι εφαρμόστηκαν σε 101 ασθενείς με καρκινικούς όγκους εγκεφάλου οι οποίοι είχαν διαγνωστεί ως μετάσταση (24), μηνιγγίωμα (4), γλοίωμα βαθμού 2 (22), γλοίωμα βαθμού 3 (17) ή γλοίωμα βαθμού 4 (34) και επαληθεύτηκαν με τη στρατηγική του αχρησιμοποίητου παραδείγματος (Leave One Out-LOO)
The objective of this study is to investigate the use of pattern classification methods for distinguishing different types of brain tumors, such as primary gliomas from metastases, and also for grading of gliomas. A computer-assisted classification method combining conventional magnetic resonance imaging (MRI) and perfusion MRI is developed and used for differential diagnosis. The characterization and accurate determination of brain tumor grade and type is very important because it influences and specifies patient's treatment planning. The proposed scheme consists of several steps including ROI definition, feature extraction, feature selection and classification. The extracted features include tumor shape and intensity characteristics. Features subset selection is performed using two filtering methods, correlation-based feature selection method and consistency method, and a wrapper approach in combination with three different search algorithms (best first, greedy stepwise and scatter). These methods are implemented using the assistance of the WEKA software [20]. The highest binary classification accuracy assessed by leave-one-out (LOO) cross-validation on 102 brain tumors, is 94.1% for discrimination of metastases from gliomas, and 91.3% for discrimination of high grade from low grade neoplasms. Multi-class classification is also performed and 76.29% accuracy achieved.
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26

Hopkins, Aareka. "The potential for charophtye re-establishment in large, shallow, eutrophic lakes with special reference to Lake Waikare, New Zealand /." 2006. http://adt.waikato.ac.nz/public/adt-uow20060717.162208/index.html.

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27

Squire, Marjorie. "The experiences of older women participating in the workforce a qualitative study of ten registered nurses over the age of 60 working in the Waikato's health sector /." 2008. http://adt.waikato.ac.nz/public/adt-uow20080509.145821/index.html.

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