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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
71

Interpreting Barriers to Energy Efficiency within Southern Ontario Municipal Buildings: A Case Study

San Filippo, Amanda January 2012 (has links)
Recent concerns regarding climate change, environmental degradation, human health and energy security associated with the consumption of energy have raised questions about the sustainability of current energy systems. Increasing energy efficiency is considered a core strategy for ultimately achieving a sustainable energy system by offering a cost-effective method for reducing energy use for organisations. However, the slow execution of energy efficiency solutions is said to be reflective of a much wider debate within energy economics, and lead to what is commonly referred to as the “efficiency gap”. Historically, the debate involves theoretical differences between engineering-economic, or “bottom-up”, models which suggest there is ample room for profitable energy efficiency measures; and, orthodox economic, or “top-down”, models which argue that there are significant costs associated with reducing energy consumption. The result has been a diversity of opinions on the potential for, and costs of, energy efficiency, the nature and significance of associated barriers and the appropriateness of various policies in overcoming these barriers. In reality, there is no one-size-fits-all solution to resolving the debate. Rather, the differences across energy service markets require that the existence of an efficiency gap be assessed within the context of these parameters. This requires understanding the nature and significance of barriers to energy efficiency and their economic and organisational impacts within various contexts. This paper explores a taxonomy of barriers to energy efficiency within one potentially influential sub-sector within the country’s most densely populated and highest energy consuming region – Southern Ontario municipalities. The information was collected in three phases. First, a review of the literature was conducted which helped identify and understand potential barriers to energy efficiency and the instances in which they would merit policy intervention. Secondly, 26 questionnaires from individuals responsible for various aspects of energy management and municipal decision-making were completed to gain further insight into municipal structures, policies, decision-making procedures and perception of barriers. These questionnaires were supplemented with 6 detailed interviews conducted with municipal energy managers, or the equivalent. The results presented in this study confirm the presence of an energy efficiency gap within the participating municipalities and that barriers to cost-effective energy efficiency measures do in fact exist. These barriers are most often associated with a lack of information on obtaining appropriate measures and difficulties accessing available capital required for initial investments. The findings support the claims of “bottom-up” models which indicate that policy intervention may rationally overcome many of these barriers. For example, organisational policy measures such as the implementation of energy reserve funds for individual departments may be implemented at low costs. Other barriers that do not justify policy intervention, such as risk, were considered to be less relevant to the participating municipalities. The case studies suggest that with adequate public and organisational policy intervention, the energy efficiency gap may be reduced within these municipalities, thus increasing overall energy efficiency.
72

Suitable Habitat Modelling for the Yellow-breasted Chat (Icteria virens virens) in Point Pelee National Park, Canada.

Walker, Jessica Rose January 2012 (has links)
In order for conservation managers to preserve species within an area, an in-depth knowledge of the distributional patterns of focal species within a landscape is required. This is especially true when the species of concern is Threatened or Endangered and conservation of habitat is essential for species preservation. The yellow-breasted chat (Icteria virens virens) is one such species that is listed as Special Concern under the Species at Risk Act of Canada; the virens subspecies meets the criteria for Endangered. Populations within Canada are limited due the bird’s natural range, which extends north into the extreme southern part of Ontario. Point Pelee National Park is one of two strongholds for this species. However, populations within the park have been declining greatly over the past few years with a 70% rate of decline between 1982 and 2008 (n =10, n=3). This decline is likely due to the lack of natural disturbance such as fire, as well as land use change to agriculture and urbanization that has resulted in a decrease of suitable habitat, outside the park. To examine these hypotheses, habitat suitability modelling is a useful tool. It offers conservation managers insight into current distributions of species, especially species of concern. The purpose of this research was to examine environmental variables relating to three bird species and use these variables to model suitable habitat within the study site (Anders Field Complex). In my study, ArcMap 10 was used to model and map suitable habitat within the Anders Field Complex of Point Pelee National Park, as this is the last known nesting grounds for the yellow-breasted chat within the park. The willow flycatcher (Empidonax traillii) and the white-eyed vireo (Vireo griseus) were also studied as they fill a similar niche and therefore strengthen the results of the study. Environmental variables were modeled to predict suitable habitat and therefore predict potential species distribution. The model used predictors such as vegetation composition of breeding territories and nest patch vegetation composition to identify potential suitable habitat within the study site. Results of the models show that there is likely no suitable habitat (0.04 ha) available for the yellow-breasted chat within the complex. Some suitable habitat was available for the willow flycatcher but seemed limited within the study site (4.1 ha), while an absence of available data on nest scale vegetation characteristics rendered modelling of the white-eyed vireo’s habitat moot. Conditions within the Anders Field Complex have succumbed to succession resulting in mature conditions in vegetation structure and composition, as low dense shrub with high herbaceous cover is being replaced with tall thicket with very little ground cover. Height of vegetation has succeeded the requirements of the yellow-breasted chat. These results show that habitat succession and therefore the loss of suitable habitat is a likely factor influencing chat populations within the Anders Field Complex. There are also factors outside the park likely affecting chat distribution including habitat loss and fragmentation at the landscape scale. Management practices, such as the re-introduction of lost mechanisms or processes within the park should focus on a broad-scale ecological approach that considers novel thinking to restoring ecological integrity. Human induced influences including land use change and introduction of exotic species have forever changed conditions within and surrounding the park, therefore restoration should be mindful to new ecosystems, as restoring to past conditions is likely unproductive. Implementing a disturbance regime such as prescribed burnings, is recommended in order to restore a lost mechanism for the renewal of early-successional habitat. Concentrating on restoration of ecosystems and the re-establishment of a shifting mosaic will provide habitat for a plethora of species including the chat, which is legally mandated by law. However, restoring habitat for the chat will likely not result in the increase of chat abundance within the park until factors outside of the park, including habitat loss and fragmentation are rectified.
73

Investigating the sustainability and resilience criteria for evaluation of land use plans and related policies: The case of rural Niagara

Mahboob, Azzam 08 1900 (has links)
Most land use plans and policies, including those concerning growth management, are created in urban hubs (Afshar, 1994; Summer, 2005). My interest in this thesis started by asking the question: What are the criteria that ensure that land use plans and related policies serve rural livelihoods and stewardship under the lens of sustainability and resilience? Being a citizen residing in Niagara Region, I was inspired to find out the criteria to judge plans and policies in rural Niagara as a case study. This thesis uncovers the categories of consideration for rural areas close to urban centres in developed countries, and the context-specific criteria pertaining to rural Niagara. The eight context-specific categories, merged with sustainability and resilience imperatives, are presented as evaluation criteria in a brief form as follows: 1. Plans and policies should provide for building communities’ capacity in participative and collaborative governance including overlap in governance; 2. provide means for reconciling different interests in a way that celebrates diversity and ensures sufficiency and opportunity for all towards intragenerational equity while supporting community solidarity to acknowledge slow variables and feedback signals; 3. provide for the support of viable farming by fostering livelihood sufficiency and preserving resources for future generations within a regional character; 4. provide for strengthening the socio-economic base integrity in ways that also maintain/ rehabilitate the socio-ecological base by reducing threats to its long-term integrity while encouraging diversity and innovation. 5. Plans and policies are to be used as tools to reduce intragenerational and intergenerational inequities in livelihood sufficiency and opportunity through collective responsibility, and innovative solutions to the local poverty problems. 6. Plans and policies should allot specific clauses to alleviate land stressors through institutionalized adoption of the precautionary principle, socio-ecological system integrity and the application of all sustainability imperatives while rewarding voluntary stewardship. 7. Plans and policies should acknowledge and foster multi-functionality in agriculture as one of the means to foster livelihoods, socio-ecological system integrity, and sustainable use of resources through the integration of all sustainability imperatives. Multi-functionality entails fostering diversification, the building of a regional modular character while acknowledging slow variables and system feedbacks through innovative local solutions 8. Plans and policies should cater for Preparedness for the Future by institutionalizing the adoption of precaution and adaptation as one of the means to prepare for uncertainty and applying all sustainability imperatives to seek mutually supportive benefits while nurturing a resilient Niagara character through all resilience imperatives The above eight categories relate to all the sustainability imperatives (listed in appendix C) and all the resilience imperatives (listed in appendix D) in various ways. The research used the technique of triangulation for corroborating evidence. By reviewing a purposeful sample of Niagara government and non-government documents, the presence of the eight categories was confirmed. A sample of articles in a local paper also confirmed the presence of the categories. By counting the number of mentions for each category, the priority order was inferred. In the case of Niagara the top priority is given to “Viable Farming” as concerns grow over the mounting challenges faced by family farms. “Stewardship” is the second priority to enable the rural and farming communities to play the role of land stewards.
74

An examination of environmental policy regarding the 2008 Koi Herpesvirus (CyHV-3) outbreak in Lake Simcoe, Ontario, Canada: the disposal of Cyprinus carpio carpio L. on First Nation and off-reserve land

Cooper, Kira Jade 02 May 2013 (has links)
Koi Herpesvirus (KHV), a species-specific DNA virus of the family Herpesviridae, is responsible for mass mortalities of common carp (Cyprinus carpio carpio L.) throughout the world. KHV’s broad geographical distribution and relatively high mortality rate among infected fish, creates significant disposal issues when die-offs occur, especially taking into account the body burden of contaminants in the fish. In locales where adequate disposal facilities are unavailable, or are unable to accommodate additional loadings of contaminated fish carcasses, concerns regarding human and environmental health are raised. During the summer of 2008, residents of the Lake Simcoe Region of southern Ontario, Canada, were faced with a massive die-off of carp, infected with KHV. Carp within the Great Lakes and much of the world are known to bioaccumulate (and biomagnify) contaminants, such as, polychlorinated biphenyls (PCBs), pesticides (e.g., dichlorodiphenyltrichloroethane, DDT, and toxic metals (e.g., mercury). These contaminants have been associated with numerous adverse effects on both human and environmental health, and are thus of important considerations when planning for large-scale carcass disposal, following fish die-offs. Although suites of microbiological tests and water quality assessments are frequently conducted to identify causative factors during extensive fish-kills - assessments of relative contaminant burdens in the carcasses, which should dictate the most appropriate method of carcass disposal - are rarely performed. A case study on Snake Island, Lake Simcoe, Ontario was conducted to further examine the implications of this policy. Soil samples from two known disposal sites and three presumed control locations were sampled on Snake Island and sent to the Analytical Services Unit of Queen’s University for chemical analysis. Although none of the soil samples exceeded any legal guidelines in the present study, there is still concern as future die-offs of other fish species or piscivorous birds and the disposal of large numbers of carcasses may be an issue.
75

Capital Brownfields: An Assessment of Brownfield Planning Policy in the City of Ottawa, Ontario

Ouseley, Mark 14 May 2013 (has links)
A brownfield is previously developed land which suffers from actual or perceived contamination due to past uses. The City of Ottawa, like many of Canada's municipalities, is faced with a significant inventory of brownfields. As the legacy of industrial activities in earlier times, these sites have become an environmental threat, blight to the community and economic loss for their owners and the City. Unlike many of Ontario's more highly industrialized municipalities, Ottawa has a less industrialized history and, as the Nation's Capital, faces unique brownfield challenges and development climate, requiring a policy approach that is tailored to the Ottawa development market. Ottawa's major brownfield sites are owned by different levels of governments and private firms, ranging from the National Capital Commission owned LeBreton Flats to the City of Ottawa owned Bayview Yards. This thesis intends to examine current development trends for brownfields, impediments and opportunities for development, assess the efficacy of current policies and provide suggestions for the improvement of the existing brownfield development planning process in Ottawa, using an applied research method. This study is developed through interviews with key informants, a collective case study analysis, a literature review and site visits. This thesis intends to study current policy and provide recommendations to improve Ottawa's approach to brownfield development. The City of Ottawa has developed a Brownfield Community Improvement Plan, featuring multiple grant programs which has proved to be successful in incentivizing the development of brownfield sites which otherwise would have remained idle. However, the creation and development of this policy was a challenging process, requiring review and improvement in light of ongoing development applications. The findings of this paper indicate the policy has been successful due to its encouragement of brownfield projects which otherwise would not have occurred. In addition, case studies of Bayview Yards, CLC Rockcliffe Lands, Lansdowne Park, LeBreton Flats, 1357 Baseline Road and 300 West Hunt Club Road illustrate the pursuit of significant brownfield development projects in the City. However, despite its success, some challenges still exist which the City of Ottawa must endeavour to overcome. By tackling these challenges, the City could further aid in erasing brownfields from Ottawa's urban fabric and leave a legacy to its residents, characterized by a robust urban centre free from severe environmental contamination.
76

Exploring the Common Ground Between Social Innovation and Indigenous Resurgence: Two Critical Indigenist Case Studies in Indigenous Innovation in Ontario, Canada

Alexiuk, Erin January 2013 (has links)
Preliminary reading and research with Anishanaabe Maamwaye Aki Kiigayewin and the Mississaugas of the New Credit First Nation (MNCFN) indicated that integrating Indigenous Knowledge and Practices into existing social innovation strategies is not always sufficient to provide useful tools for Indigenous innovation process. However, it became clear that social innovation shares common ground with the Indigenous resurgence movement and, when considered along with critical indigenist research strategies, can provide direction for Indigenous innovations at multiple scales. The purpose of this thesis is to provide a preliminary exploration of social innovation from a critical indigenist perspective to increase its utility in Indigenous contexts. Together with Anishanaabe Maamwaye Aki Kiigayewin and MNCFN, and following Indigenous scholars, I have strived to implement
critical indigenist methodologies by linking critical and Indigenous methodologies through action-oriented research to address the asserted
needs and interests of Indigenous partners. Through this critical indigenist approach, I have strived to implement participant observation, reflexivity, and settler storytelling to fulfill my research objectives. Through a discussion of current initiatives undertaken by Anishanaabe Maamwaye Aki Kiigayewin, I demonstrate that major themes and strategies of social innovation are useful in supporting the resurgence of Indigenous Knowledge and Practices. This discussion results in the conclusion that Indigenous innovation is a unique type of social innovation informed by Indigenous Knowledge to promote the resurgence of Indigenous Knowledge and Practices. From this position, I propose a conceptual model for Indigenous innovation that links resilience, social innovation, Indigenous resurgence, and critical indigenist research strategies with the intent to lay a foundation for further development of a historicized, culturally appropriate model that promotes the resurgence of Indigenous Knowledge and Practice. I demonstrate the utility of this model by using it to organize a description of current initiatives underway in MNCFN and then using it to speculate on future initiatives that may foster successful innovation(s) in MNCFN Traditional Territory. In conclusion, articulating Indigenous innovation as a unique type of social innovation may lead to developing approaches to relationship building and knowledge integration that are culturally appropriate and ultimately more useful for Indigenous innovators looking to implement them.
77

Adolescent Perceptions and Attitudes towards Invasive Species and Nature

Creelman, Kyle 26 September 2011 (has links)
Invasive species are one of many important environmental issues facing Canadians today. A great deal of research has explored both the scientific and social aspects of invasive species. However, the cumulative research has not yet thoroughly explored people’s thoughts and feelings about, or perceptions of, invasive species and the influence these may have on management of, or policy decisions regarding, invasive species. This thesis research project was designed to assess the attitudes and perceptions that high school students have towards invasive species and to determine to what extent learning about invasive species alters their connection with nature. The study group was comprised of students from four Grade 11 Environmental Science classes from three high schools within the city of Guelph, Ontario. The students received regular classroom instruction from their teachers covering the course content, including invasive species. Students also made weekly visits to a local nature centre, providing them with hands-on learning experiences related to the course content. Students responded to an 80-question survey that assessed their knowledge of local invasive species and attitudes towards them as well as students’ connection to nature. Their connection to nature was assessed using a modified version of the Connectedness to Nature Scale (Mayer & Frantz, 2004). The surveys were administered by the classroom teachers in October, 2010, prior to the presentation of instructional material covering invasive species and then again in December, 2010 when the presentation of instructional material concerning invasive species was complete. The results showed that the students’ knowledge of invasive species upon entering the course was quite low and each of the classes witnessed a significant increase in knowledge. The survey results did not reveal any change to the students’ connection to nature; however, they did reveal three underlying themes in students’ attitudes towards invasive species: a concern about invasive species as a threat or problem; feelings of acceptance towards invasive species; and feelings of anxiety about invasive species. These attitudes remained relatively unchanged after the course.
78

The spring reverse migration of landbirds in the Pelee region: 2010-2012

Burrell, Kenneth 20 September 2013 (has links)
The spring reverse migration of landbirds (i.e., birds flying in the direction opposite to be expected), within the Great Lakes region is controversial because it is not understood if the extent or reversal of flight direction in spring is truly a change in migratory patterns or a brief anomaly. It is also not clear what the fitness and community level impacts are. My objective was to determine what and how weather influences reverse migration and to determine which species and families of birds participate the most frequently in this form of flight. I examined species which are participatory (and those that are not) as well as the impacts of specific weather covariates on the abundance of landbirds and focused explicitly on the putative reverse migration of landbirds. Field sites were located at the extreme southern tip of Fish Point, Pelee Island (2010-2012) and Point Pelee National Park (2012), where my field assistant and I visually recorded the total number of birds observed to be reverse migrating, while identifying all birds to species or family as best possible. This study was conducted over 97 days during April 26 – May 20, in 2010-2012. Information pertaining to potential reverse migration has only been formally documented twice in the Great Lakes region, most recently in 1951. I undertook a descriptive analysis to compare the numbers of individuals of bird species and families. Temperate and neotropical migrants were examined, compared, and divided into sub-sets based on their geographic ranges. I identified species at risk and vagrants which I observed during reverse migrations. Based on provincial population estimates, I determined the proportion of all reverse migrants where ≥200 individuals were observed. A descriptive analysis was undertaken to determine differences between sites (i.e., Point Pelee and Fish Point) in the final year of surveys (2012). Species and abundance were comparatively differentiated between each site and subsequently compared. While very few birds were observed flying anything but south, a total of 61,677 birds of 80 species was documented flying south. My results indicate temperate migrants vastly outnumbered neotropical migrants (as much as 4:1) and numbers of birds varied between study sites. Temperate migrants were noted to be more common (in the final study year) at Point Pelee compared to Fish Point, while neotropical migrants were more numerous at Fish Point than Point Pelee. Despite the fact that most migrant species participated in reverse migrations (i.e., of the species regularly occurring in the Pelee region at this time of year), complete absences were noted, most notably in Catharus thrushes, while species such as Rose-breasted Grosbeak and Scarlet Tanager, and families such as Tyrant Flycatchers, Vireos and Sparrows were observed to be less prevalent than anticipated. Species at risk and vagrants were noted relatively frequently during this study, suggesting that these surveys are an efficient and potentially important tool for migration monitoring in this region. Diurnal migrants, most notably Blackbirds, were observed to engage in reverse migration in higher numbers than nocturnal migrants, such as Wood Warblers. Seven weather covariates were measured and modeled with the total number of birds detected using R to determine which covariates explain the most amount of variation of the total number of birds during my surveys. I used an AICc approach to select the best model for each hypothesis. After selecting the top weather covariates with time lags according to the best (lowest) AICc values, I built general models by comparing all possible combinations of the covariates identified in the top models for each hypothesis. I included a random effect intercept for study site to discern any site difference or similarities between Point Pelee and Fish Point and specified a Poisson distribution (log-link function as implemented in the LMER package) because the data set was continuous (time-series) and count oriented. My adjusted time lag results show that most migrants tend to migrate during and ahead of inclement weather and/or periods of south winds. I also found that all identified covariates influence reverse migration to some degree. Wind direction and barometric pressure were the most significant of the covariates examined (β = 0.718 and -0.213, respectively). Specifically, wind direction is the most important covariate in explaining reverse migration, with days of south winds dramatically increasing the probability of higher numbers of birds during surveys. Low barometric pressure is also important for explaining the number of observed reverse migrants; therefore, days with lower barometric pressure have a greater likelihood of increased bird observations. Based on my observations and results I theorized that while reverse migration pertains to a distinct form of flight, it is likely not an actual form of migration. This form of flight at its simplest is likely a form of reorientation, whereby migratory birds take advantage of local weather conditions by flying south for extended distances. I anticipate that this form of flight must have serious consequences for the fitness levels and life-cycles of migratory birds. Studies looking at reverse migration provide a useful tool for migration monitoring, particularly as it is an underexplored phenomenon. Observations of thousands of birds, many of which are either species at risk or vagrants, collected in an efficient manner are vital for determining population trends related to migratory birds. Continuing this study would aid on-going monitoring programs assessing bird populations passing through the lower Great Lakes region. These studies will also help us understand the impacts of climate and climate change on migratory birds.
79

Mapping Youth-led Engagement: Impacts of Youth-led Engagement in English Canada over the Last 35 Years

Ho, Elaine January 2013 (has links)
This study explores how youth have inspired social change in Canada from 1978 to 2012. The objectives of the research include defining youth-led engagement in Canada, understanding its role as a change agent, and mapping the relationships between strategies and impacts. The goals of this study are to help current and future youth maximize opportunities that are likely to result in the greatest success, as well as increase opportunities for youth to be involved in decision making processes by validating their contributions. The research includes youth who effect change in a variety of contexts from across Canada. Data collection consists of an online media search and supplementary document reviews. A media content analysis methodology is applied to extract the data, while frequencies and cross tabulations in the form of chi-square tests were used to analyze them. The results show a strong relationship between strategies youth use and the impacts that follow. Further, the data show that youth have made some of their most frequent contributions by participating in political processes to address issues of equality, empowerment and social justice. Patterns between youth efforts and long-term changes in society are discussed, and the measurement of impacts is considered. This research measures three types of impacts youth have had on social change: individual, community/interorganizational, and systemic. It highlights the importance of institutionalizing the inclusion of youth as part of decision making processes in Canada, and validates the argument that youth have important contributions to make to our diverse society.
80

Sustainable Food Security for Local Communities in the Globalized Era: a Comparative Examination of Brazilian and Canadian Case Studies

Bastos Lima, Mairon Giovani January 2008 (has links)
In a world where food production is sufficient to feed everyone, more than 850 million people live in conditions of undernourishment, hunger, or starvation. Much of the problem lies in the current dynamics of the global agri-food system; they have impaired access to food and contributed to environmental damage and social disintegration. This increasingly integrated global system is displacing family farming enterprises in favour of agro-industrial monocultures, with their associated consequences for ecosystem health (biodiversity loss, heavy reliance on fossil fuels, etc.), and in the degradation of traditional food cultures. Conventionally, the term “food insecurity” is used to describe situations of food deprivation. This study, however, adopts a broader perspective on the issue. It has associated the ideas of food security with those related to healthy food systems, suggesting that it is not only important to strive for universal access to adequate food but also to think of the means and processes by which it can be achieved; that is, a food system that promotes equity and environmental sustainability. In addition, food security also emphasizes the need for a healthy and active life unimpaired by overconsumption or inadequate eating habits. Using a systems perspective, this study has devised criteria of sustainable food security, which serve as indicators of health in the food system. These criteria include nutritional and cultural adequacy of food, physical and economic access to it, the setting in which it is offered (i.e. the “food environment”), and the food systems’ social and biophysical impacts. Such criteria were applied to two case studies: first in Canada (Waterloo Region, Ontario) and then in Brazil (Feira de Santana, Bahia), two very different contexts, but both under the influence of global agri-food dynamics. With this case study analysis, this research investigates the current challenges for achieving sustainable food security in local communities, as well as opportunities and benefits that might be available. Feira de Santana exhibits great agro-biodiversity, a very localized food system, and community initiatives to support local food traditions, family agriculture, and sustainable farming practices based on agroecology. These efforts, however, are hindered by poverty, lack of education, poor infrastructure, and little support from the local government. For its part, Waterloo Region counts on a very supportive government that strengthens local food initiatives and combines efforts with non-state organizations in order to promote a healthy food system. Despite possessing notable local food traditions, its food system is much more globalized than Feira de Santana’s. Most of its food is imported, and much of the arable land is used for agro-industrial cash-crops. This has hampered the operations of the smaller local farmers, damaged the environment (due to long transportations and intensive, conventional agriculture), and contributed to poor eating habits. Although Waterloo Region faces less food deprivation than Feira de Santana, it has a much bigger problem with respect to overconsumption and obesity – half of the local population is overweight with associated health concerns. In conclusion, this study stresses the need to consider food security from a systems perspective, taking into account social and environmental factors. Thus, it highlights the need to promote sustainable food systems, and draws some recommendations for achieving it.

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