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This thesis explores the social history of the Marange people of eastern Zimbabwe from the 1960s to 2015. It uses historical episodes like the recurring droughts, the 1970s war of independence, the 'crisis in Zimbabwe,' that has been traced from the late - 1990s, and the diamond mining story to demonstrate how the inhabitants interacted with their environment. It argues that the relocation project that began in 2010 had a severely disruptive impact on the families relocated to the relocation area - ARDA Transau - making the case that the Marange relocation project was a 'development disaster.' While the provision of accommodation had a notable positive impact on the majority of the displaced households, family needs were not always met. For instance, large families such as those of the dominant polygamous followers of the African Apostolic Church of Johanne Marange were not provided with adequate housing. Also, the livelihoods of the displaced households were shattered by the relocation exercise. In their efforts to creatively adapt to these new constraints, the displacees had diverse coping strategies like selling firewood, illegally extending space for crop cultivation, artisanal mining, vending and begging for food to eke out a living.

Author Keywords: Coping Strategies, Crisis in Zimbabwe, Development, Displacement, Land, Livelihoods

The Places to Grow Act (2005) and the Growth Plan for the Greater Golden Horseshoe (2006) are two pieces of legislature passed by the Government of Ontario to help govern and limit urban sprawl in major cities across Ontario through to 2041. These policies are framed around the development and maintenance of large-scale cities. While there are some provisions within these policies for mid-sized cities that are part of the Greater Golden Horseshoe (GGH), there are few resources, case studies, and models for successful revitalization, and intensification in mid-sized cities. The goal of this thesis is to answer questions related to planning and development in Peterborough, Ontario and to assess its progress as it relates to Places to Grow (2005) and the Growth Plan for the Greater Golden Horseshoe (2006) guidelines. Through the use of library research, policy document analysis, interviews with key stakeholders, and GIS analysis, I identify both strategies and challenges related to development and growth in Peterborough, ON. I conclude that the policies are proving to be initially favorable in their results, however it is not without significant challenge to Planners and stakeholders in Peterborough, ON. Finally, I suggest further research take place in order to further assess the effectiveness of these policies in other mid-sized cities in Ontario, as well as to measure the success of the policies closer towards the 2041 deadline.

Author Keywords: GIS, Peterborough, planning, policy, revitalization, Smart Growth

Sustainability-related issues have been drawing considerable attention in the resort and hotel industry. This research explores the meaning of a "sustainable resort" and to identify the opportunities and challenges of developing a "sustainable resort" as well as the opportunities and challenges of engaging employees in this process, through a case study of a family resort in Central Ontario, Canada. A significant finding is that a "sustainable resort" in the context of a family business highlights cultural sustainability, which emphasizes on keeping family roots and passing on family legacy, as well as addresses economic, social, and environmental sustainability. The nature of the selected case, a traditional family resort, provides some valuable insights on the issues of sustainability and employee engagement in the resort and hotel industry. To improve sustainable outcomes for the resort, a holistic approach of collaborating with different key stakeholders, particularly emphasizing employee engagement as a core strategy, is proposed.

Author Keywords: employee engagement, family resort, resort and hotel industry, sustainability, sustainable development

Puccinia triticina, wheat leaf rust (WLR), is the most economically damaging fungal rust of wheat on a global scale. This study identified transcriptome changes in a recently emerged race of WLR in Ontario with a new virulence type relative to a possible ancestor race. Also, this study focused on detecting variation in candidate virulence genes and uncovering novel insight into WLR virulence evolution. Various race-by-variety interactions were evaluated using RNA-seq experiments. A list of genes with statistically significant expression changes in each comparison was prepared and predicted effectors were retained for further analysis. Proteins with nonsynonymous substitutions were run through BLASTx to identify potential orthologs. Over 100 candidate effectors with a 2-fold or higher change in transcript level were identified. Seven of these candidate effector genes were recognized to contain single nucleotide polymorphisms (SNPs) which altered the amino acid sequence of the resulting protein. The information gained may aid in targeted breeding programs to combat new WLR races as well as provide the basis for functional analysis of WLR using potential orthologs in a model basidiomycete.

Author Keywords: effectors, RNA-seq, rust fungi, SNPs, transcriptome, wheat leaf rust

In this thesis, water mass distribution of dissolved organic matter (DOM) characteristics (i.e. molecular weight, fluorescent components, thiols and humic substances concentration) was observed in the Arctic Ocean. For the first time, DOM molecular weight (MW) in Beaufort Sea was assessed using asymmetrical flow field-flow fractionation, as well as the first monitoring of thiols and humic substances (HS) using cathodic stripping voltammetry (CSV) in the Arctic Ocean. Based on fluorescence property, DOM characterization was carried out using parallel factor analysis – excitation-emission matrices. Pacific winter waters in the Canada Basin showed higher MW DOM associated with higher fluorescence intensity. High HS was associated with the Arctic outflow waters in top 300 m of the Canadian Arctic Archipelago. Interestingly, maximum thiol concentration was associated with the subsurface chlorophyll-a maximum at most sites, but not universal along the study area. Comparable distributions of CSV-based HS and humic-like fluorescent components suggest similar sources/ processes in the Arctic Ocean. The findings in this thesis suggested DOM characteristics could be used as fingerprints in tracing water masses in the Arctic Ocean.

Author Keywords: Asymmetrical flow field-flow fractionation, Cathodic stripping voltammetry, DOM, Metal-binding ligands, Molecular weight, PARAFAC-EEMs

Environmental DNA (eDNA) detection uses species-specific markers to screen DNA from bulk samples, such as water, to infer species presence. This study involved the development and testing of species-specific markers for four freshwater pearly mussels (Unionidae). The markers were applied to water samples from intensively sampled mussel monitoring sites to compare species detections from eDNA with established sampling method detections. Target species were detected using eDNA at all sites where they had previously been detected by quadrat sampling. This paired design demonstrated that eDNA detection was at least as sensitive as quadrat sampling and that high species specificity can be achieved even when designing against many sympatric unionids. Detection failures can impede species conservation efforts and occupancy estimates; eDNA sampling could improve our knowledge of species distributions and site occupancy through increased sampling sensitivity and coverage.

Author Keywords: conservation genetics, cytochrome oxidase subunit I (COI), environmental DNA (eDNA), quantitative PCR (qPCR), species at risk (SAR)

A set of experiments was designed to investigate the factors—atmospheric and surficial—controlling fugitive dust emissions from the tailings ponds of UNIMIN Canada, a mining company that extracts and produces nepheline syenite (feldspar) at two adjacent sites (Nephton and Blue Mountain) located north of Havelock, Ontario. Using wind tunnel measurements, the combined influence of relative humidity and temperature (represented by the absolute matric potential,

Athletes' concussion risk is part of a complex system of personal and contextual factors. This study differentiated athletes based on attitudes and intentions towards protective behaviours. A cross-sectional survey design was used to sample varsity athletes. Three intention response subgroups (indifferent, reactive, and proactive) were identified. The indifferent group (28%) reported little-to-no intent to engage in risk reduction behaviours. These athletes reported lower belief in the efficacy of concussion management behaviours and greater risk acceptance attitudes. The proactive group (32%) reported intent to actively reduce personal concussion risk through engaging in behaviours such as confronting aggressive opponents about the risk they pose to others. The reactive group (40%) only reported intent to engage in concussion management behaviours. Indifferent athletes had the highest likelihood of concussion exposure followed by reactive athletes. The proactive athletes had the lowest likelihood. Concussion programs must address beliefs and intentions towards protective behaviours to improve effectiveness.

Author Keywords: Athlete, Attitudes, Concussion, Injury Prevention, Intentions, Risk

Timber harvest can influence the rate of transfer of organic matter from the terrestrial catchment to streams, which may have both direct and indirect effects on in-stream nutrient pools and dynamics. In the interest of developing sustainable forestry practices, the continued study of the effects of forestry on nutrient dynamics in aquatic systems is paramount, particularly in sensitive nutrient-poor oligotrophic systems. The goal of this study was to investigate the impacts of harvest-related woody debris on stream nutrient status in streams located in the Canadian Shield region of south-central Ontario. Surveys showed greater large (> 10 cm) and small (< 10 cm) woody debris dry masses and associated nutrient pools in streams located in recently (2013) selectively harvested catchments, when compared with catchments not harvested for at least 20 years. Experimental releases of flagging tape underlined the importance of woody debris as a mechanism of coarse particulate organic matter (CPOM) retention. Sediment surveys showed a significant exponential decline in both OM content and nutrients associated with coarse sediment with distance upstream from debris dams. Laboratory leaching experiments suggest that fresh woody debris may be an important short-term source of water-soluble nutrients, particularly phosphorus and potassium. This study suggests that woody debris from timber harvest is both a direct and indirect source of nutrients, as trapped wood and leaves that accumulate behind debris dams can augment stream nutrient export over long time periods.

Author Keywords: nutrient leaching, nutrient pools, organic matter retention, selection harvest, southern Ontario, woody debris

Population aging has become a worldwide concern since the nineteenth century. The decrease in birth rate and the increase in life expectancy will make China's population age rapidly. If the growth rate of the number of workers is less than that of the number of retirees, in the long run, there will be fewer workers per retiree. This will apply great pressure to China's public pension system in the next several decades. This is a global problem known as the "pension crisis". In this thesis, a long-term vision for China's urban pension system is presented. Based on the mathematical models and the projections for demographic variables, economic variables and pension scheme variables, we test how the changes in key variables affect the balances of the pension fund in the next 27 years. This thesis applies methods of deterministic and stochastic modeling as well as sensitivity analysis to the problem. Using sensitivity analysis, we find that the pension fund balance is highly sensitive to the changes in retirement age compared with other key variables. Monte Carlo simulations are also used to find the possible distributions of the pension fund balance by the end of the projection period. Finally, according to my analysis, several changes in retirement age are recommended in order to maintain the sustainability of China's urban basic pension scheme.

Author Keywords: China, demographic changes, Monte Carlo simulation, pension fund, sensitivity tests, sustainability