application/pdf

An Ecological Analysis of Late Woodland Settlement Patterns in the Rouge River Watershed, Southern Ontario

Type:
Names:
Creator (cre): Davidson, Jamie Lee, Thesis advisor (ths): Conolly, James, Degree committee member (dgc): MacDonald, Robert I, Degree committee member (dgc): Munson, Marit, Degree committee member (dgc): Jamieson, Susan, Degree committee member (dgc): Fox, William, Degree granting institution (dgg): Trent University
Abstract:

This thesis seeks to understand the influences of environmental variables on site location selection during the Late Woodland period (ca. A.D. 1000-1650) in south-central Ontario, specifically variables considered to be favourable to maize agriculture. Four analyses were undertaken: a geographic information system (GIS) comparative analysis of Late Woodland sites compared to random points; population estimates of four sites for which settlement pattern data was available; maize consumption estimates for these same sites, and; a maize resources catchment analysis of these sites. The analysis conducted did not produce conclusive results to answer questions related to maize-driven site selection, however it did show that requirements for maize resources at these sites could have been met in catchment areas of a 500 m radius, in one case in 250m. The results led to an important question for future research: if agricultural needs were not driving settlement location selection in this area, what was?

Author Keywords: Environmental Modeling, GIS, Late Woodland, Maize Agriculture, Movement of Communities, Ontario Archaeology

2014

Carbon and Nitrogen Isotope Changes in Streams along an Agricultural Gradient

Type:
Names:
Creator (cre): Graham, Lisa, Thesis advisor (ths): Xenopoulos, Marguerite, Degree committee member (dgc): Dunlop, Erin, Degree committee member (dgc): Fox, Michael, Degree granting institution (dgg): Trent University
Abstract:

Nitrogen is a major constituent of agricultural fertilizers, and nitrogen inputs to stream water via runoff and groundwater lead to a variety of negative environmental impacts. In order to quantify the movement of nitrogen through aquatic food webs, fourteen streams with varying land uses across South-Central Ontario were sampled for two species of fish, freshwater mussels, and water for measurement of isotope ratios of δ15N and δ13C. I found that nitrogen isotopes in fish, water, and mussels were related to the percentage of riparian monoculture, and that carbon isotopes were unrelated to monoculture. Though all species were enriched as monoculture increased, the rate of δ15N enrichment as monoculture increased did not vary between species. This study has improved our understanding of how monoculture affects nutrient enrichment in stream food webs, and assesses the validity of using nitrogen isotopes to measure trophic positions of aquatic organisms across an environmental gradient.

Author Keywords: agriculture, fish, food webs, nitrogen, stable isotopes, streams

2014

(un)Natural Provocation: Abjection, Otherness, and Nonhuman Representation in Isabella Rossellini's Green Porno Webseries

Type:
Names:
Creator (cre): Hall, Joshua, Thesis advisor (ths): Chivers, Sally, Degree committee member (dgc): Eddy, M. Charmaine, Degree committee member (dgc): Hladki, Janice, Degree granting institution (dgg): Trent University
Abstract:

My thesis examines anthropomorphism and many avenues in which humans represent nonhumans to evaluate their own lives. Using Isabella Rossellini's Green Porno webseries, a collection of two-minute films starring Rossellini as a multitude of nonhumans with costumes transforming her into nonhuman, I posit that a new form of anthropomorphism -- one that values the nonhuman in all his or her nonhumanity -- is emerging in contemporary media. Rossellini describes the mating, seduction, and maternal instincts of these nonhumans, regularly drawing parallels between nonhuman and human behavior and uncovering crucial intersections in femininity, masculinity, queer theory, and abjection. In more recent films, I see Rossellini performing certain nonhumans to critique particular characteristics of Western human society and incredulously addressing the human viewer as a member of a species that might not be as high in the caste system of living beings as he or she is led to believe. In turning this sense of grotesque Otherness onto the human, I identify Rossellini as engaging in counterabjection, or the reversal of extreme degradation often projected upon nonhuman bodies by humans.

Author Keywords: abjection, animal studies, nonhuman, queer studies

2014

Seasonal variation in nutrient and particulate inputs and outputs at an urban stormwater pond in Peterborough, Ontario

Type:
Names:
Creator (cre): Geraldi, Jason, Thesis advisor (ths): Eimers, Catherine, Degree committee member (dgc): Watmough, Shaun, Degree committee member (dgc): Buttle, Jim, Degree granting institution (dgg): Trent University
Abstract:

Stormwater ponds (SWPs) are a common feature in new urban developments where they are designed to minimize runoff peaks from impervious surfaces and retain particulate matter. As a consequence, SWPs can be efficient at retaining particle-bound nutrients, but may be less efficient at retaining nutrients that are present primarily in the dissolved form, like nitrogen (N). However, the forms of nutrients (e.g. particulate vs. dissolved) likely differ with hydrologic and seasonal conditions and few studies have examined year-round differences in nutrient forms and concentrations at urban SWPs. In order to contrast total suspended solids (TSS), phosphorus (P) and nitrogen (N) levels between low and high flow conditions, sampling was conducted at an urban SWP in Peterborough, ON between November 2012 and October 2013. Only an increase in TSS levels at the outflow between low and high flow conditions was observed, as well as a decrease in TSS levels at the outflow compared to Inflow 1 under low flow conditions. Nitrate-N (NO3-N) was the dominant form of N entering the pond under all flow conditions, whereas the fraction of total-P (TP) that was particulate increased under high flow conditions. Nevertheless, the dissolved fraction of TP was consistently high in these urban inlets. Only NO3-N was significantly greater in the inflows than outflow and only under low flow conditions. Increases in the proportions of organic-N and ammonium-N

in the outlet suggest that biological processing is important for N retention.

Author Keywords: nitrogen, Ontario, phosphorus, stormwater ponds, total suspended solids

2014

Genome annotation, gene characterization, and the functional analysis of natural antisense transcripts in the fungal plant pathogen Ustilago maydis

Type:
Names:
Creator (cre): Donaldson, Michael Edward, Thesis advisor (ths): Saville, Barry J, Degree committee member (dgc): Brunetti, Craig R, Degree committee member (dgc): Yee, Janet, Degree granting institution (dgg): Trent University
Abstract:

Ustilago maydis (DC) Corda is the causal agent of 'common smut of corn'. Completion of the U. maydis lifecycle is dependent on development inside its host, Zea mays. Symptoms of U. maydis infection include chlorosis and the formation of tumours on all aerial corn tissues. Within the tumours, thick-walled diploid teliospores form; these are the reproductive and dispersal agent for the fungus. U. maydis is the model to study basidiomycete biotrophic plant-pathogen interactions. It holds this status in part because of the completely sequenced 20.5 Mb genome; however, thorough genome annotation is required to fully realize the value of this resource. The research presented here improved U. maydis genome annotation through the analysis of cDNA library sequences and comparative genomics. These analyses identified and characterized pathogenesis-related genes, and identified putative meiosis genes. This enabled the use of U. maydis as a model for investigating 'host-induced' meiosis. Further, the cDNA library analyses identified non-coding RNAs (ncRNAs) and natural antisense transcripts (NATs). NATs are endogenous RNA molecules with regions complementary to a protein-coding transcript. Although NATs have been identified in a wide variety of mammals, plants, and fungi, very few have been functionally characterized. Over 200 U. maydis NATs were annotated by analyzing full-length cDNA sequences. NAT structural features were characterized. Strand-specific RT-PCR was used to detect NATs in U. maydis and in a related smut fungus, U. hordei. The data supported a common role for NATs in smut teliospore development, independent of the RNA interference pathway. Analysis of the expression of one U. maydis NAT, as-um02151, in haploid cells, led to a model for NAT function in U. maydis during teliospore dormancy. This model proposed NATs facilitate the maintenance of stored mRNAs through the formation of double-stranded RNA. In testing this model, it was determined that the deletion of two separate upstream regulatory regions, one of which contained a ncRNA (ncRNA1), altered NAT levels and decreased pathogenesis. These studies strengthened U. maydis as a model organism, and began the functional investigation of NATs in U. maydis, which identified a new class of fungal pathogenesis genes.

Author Keywords: cDNA library analysis, genome annotation, mRNA stability, natural antisense transcripts, pathogenesis, Ustilago maydis

2014

Motivating Policy Responses to Climate Change: A Case Study of The City of Vancouver's Climate Change Adaptation Strategy

Type:
Names:
Creator (cre): Fralin, Sara, Thesis advisor (ths): Hill, Stephen, Degree committee member (dgc): Holdsworth, David, Degree granting institution (dgg): Trent University
Abstract:

This research investigates urban climate governance through a case study of climate change adaptation policy making in the Canadian municipality of Vancouver, British Columbia (BC). It investigates the context in which the City of Vancouver was motivated to develop its climate change adaptation strategy (CCAS) by exploring the motivating factors and drivers behind the formulation of this plan. The research approach involved content analysis of policy documents underlying the CCAS as well as interviews with key politicians and policy makers familiar with the strategy. I conceptualize the development of the CCAS using Kingdon's Multiple Streams Framework, leading me to conclude that the convergence of three streams, namely: 1) knowledge of local climate change impacts and their cost to city assets, 2) political leadership and 3) green policy coordination in the City of Vancouver, created an opportunity that was seized upon by policy champions to address adaptation.

Author Keywords: adapting cities to climate change, climate change adaptation policy, climate change adaptation policy formulation, local climate governance, municipal adaptation plan, urban climate governance

2014

Widespread changes in growth, diet and depth distribution of lake whitefish (Coregonus clupeaformis) in the Great Lakes are linked to invasive dreissenid mussels

Type:
Names:
Creator (cre): Fera, Shannon A., Thesis advisor (ths): Dunlop, Erin, Thesis advisor (ths): Ridgway, Mark, Degree committee member (dgc): Dillon, Peter, Degree granting institution (dgg): Trent University
Abstract:

Recent declines in growth and condition of Great Lakes' lake whitefish (Coregonus clupeaformis) have been linked to ecosystem-wide changes stemming from the invasion of dreissenid mussels. To test the influence of invasive mussels on this commercially important coregonid species, we collected archived scale samples from ten Great Lake locations and analyzed long-term changes in growth rates, delta 13C and delta 15N stable isotope ratios before and after mussel establishment. There was a decrease in pre-maturation growth after establishment in all four locations where we examined back-calculated growths. In six of the seven locations with dreissenid populations, a significant increase in delta 13C and a significant decrease in delta 15N was found. In dreissenid-absent locations of Lake Superior, we did not see changes in growth or isotope ratios indicative of a major regime shift. Observed shifts in isotopic signatures provide evidence for an increased reliance on nearshore food sources and shallower depth distribution as a result of dreissenids, which likely contributed to lowered growth of lake whitefish.

Author Keywords: Diporeia, Dreissenids, food web, Great Lakes, invasive species, lake whitefish

2014

Flesh Made Real: The Production, Reception, and Interpretation of Transgender Narratives

Type:
Names:
Creator (cre): Deshane, Evelyn, Thesis advisor (ths): Eddy, Charmaine, Degree committee member (dgc): Chivers, Sally, Degree committee member (dgc): McGuire, Kelly, Degree committee member (dgc): Mitchell, Liam, Degree granting institution (dgg): Trent University
Abstract:

This thesis examines what the term "transgender narrative" represents at this particular time and location. I do this by examining various methods of transgender storytelling through different forms of media production, including autobiography, film, novels, and online platforms such as Tumblr and YouTube. In chapter one, I look at the production of novels and the value system by which they are judged ("gender capital") in transgender publics and counterpublics. In chapter two, I examine the history of the autobiography, along with the medical history closely associated with transgender identity and bodily transformation. The third chapter examines notions of violence and memorial behind the deaths of transgender people and the ways in which certain political revolutions are formed within a counterpublic. I deconstruct varying notions of identity, authorship, and cultural production and critically examine what it means to be transgender and what it means to tell stories about transgender people. I will conclude with how these stories are being shaped through social media to become more innovative and move away from the rigid value system of gender capital previously mentioned.

Author Keywords: autobiography, gender, sex, social media, transgender, transsexual

2013

EMPIRE AND ITS PRACTITIONERS: HEALTH, DEVELOPMENT, AND THE U.S. OCCUPATION OF HAITI, 1915-1934

Type:
Names:
Creator (cre): Davidson, Matthew, Thesis advisor (ths): Sheinin, David, Degree committee member (dgc): Dunaway, Finis, Degree committee member (dgc): Wright, Robert, Degree granting institution (dgg): Trent University
Abstract:

In 1915 U.S. Marines invaded Haiti. Driven first by the epidemiological dangers in Haiti, health and medicine was made a central tenet in administering the occupation. Useful for protecting the American Marines from disease, the Service d'Hygiene (the occupation-era Public Health Service) also served a hegemonic purpose. By bringing American biomedicine to sick Haitians, the Service d'Hygiene built support for the occupation and helped foster long-term connections between Haiti and the United States. This hegemonic drive was made possible by the incorporation of non-state actors into the colonial project. To achieve this, the American authorities forged a development strategy for Haiti that was premised upon a relationship between the state and private institutions such as the Rockefeller Foundation. This strategy also encouraged Haiti to look to the United States for support, a goal successfully realized when Haitian politicians continued to do so even after the Marines left Haiti in 1934.

Author Keywords: Haiti, Hegemony, Imperialism, Public Health, Rockefeller Foundation, Service d'Hygiene

2014

The Scientificity of Psychology and the Categorical Paradigm of Mental Illness: A Critique of the History of Clinical Depression and Antidepressants

Type:
Names:
Creator (cre): Gilbert, Shaun Justin, Thesis advisor (ths): Holdsworth, David, Degree committee member (dgc): Coughlan, Rory, Degree committee member (dgc): Bleasdale, Fraser, Degree granting institution (dgg): Trent University
Abstract:

There is little research devoted to exploring psychology's historical and discursive development. Psychological knowledge is generally presented as the contributions of individuals, but without context. The social, political, and economic aspects of psychology's development are scarcely discussed, including how the discipline came to be considered a science. This thesis project explored the history of the development of psychology. Specifically, psychology's claim to scientificity via the appropriation of the medical model of disease, and accordingly, the instantiation of the categorical paradigm of mental illness were examined. The discontinuous events that shaped psychology and its hallmark of scientificity were explored, including extensive concept transformations, political agendas, and marketing strategies. These practices were then explored in a practical way using the conception of clinical depression and the role of antidepressants as the first-line treatment for depression in the USA. This exploration revealed psychology's socio-historical contingencies and its agenda of prediction and control.

Author Keywords: Categorical Paradigm, Concept Transformations, Historicity, Knowledge Products, Psychology, Scientificity

2014