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Biogeography of Carabidae (Coleoptera) in the Boreal forest
Basic biogeographic information is lacking for many species, such as where species are found, and how they dispersed there. Using ground beetles collected during 2008-2015 from across northern Ontario and Akimiski Island, Nunavut, I present new information on ground beetle distribution in this eastern Nearctic boreal forest, including 2 first Canadian records, 9 first provincial and 48 first territorial records, as well as 74 new records that extend the known range of many large and common ground beetles several hundred kilometres. I used these distributions to redress the knowledge gap that includes fundamental distribution data, i.e. the Wallacean shortfall, and to inform later chapters in my thesis.In Chapter 3, I examine the range expansion pattern of Carabus granulatus, a non-native species, as it spread across northeastern North America and I provide a new range record. Northern Ontario is already under threat from non-native species entering the region and it is important to conduct studies in the region before more disturbance associated with development occurs. In Chapter 4, I examine the hypothesis that northern Ontario effectively acts as a climate plateau for poikilotherms, using the predictions from Bergmann's rule as my metric. The body length of ground beetles does not appear to change over the small temperature gradient that exists across northern Ontario latitudes, supporting the climate plateau hypothesis. In Chapter 5, I test hypotheses about dispersal mechanisms that contributed to post glacial re-establishment of ground beetles using predictions of geographic distribution patterns as metrics. I found that ground beetles were likely carried downstream by rivers which aided their dispersal northward from southern refugia. I infer from the current geographic distributions that flightless ground beetle species are still expanding their range in this boreal region. Finally, I argue that there is an urgent need for more basic research on species distributions while it is still possible in regions like northern Ontario, before increased industrial and agricultural development, and expanding resource extraction projects obliterate evidence of historic ecological processes.
Author Keywords: Boreal forest, Carabidae, Coleoptera, Passive dispersal, Post-glacial distribution, Range extension
Effects of Opioids on the Development and Reproductive Capacity of Japanese Medaka, Oryzias latipes
Opioid drugs are among the microcontaminants that are discharged with domestic wastewater into the aquatic environment with the potential to affect the development and reproductive capacity of aquatic organisms. To study the effects of exposure of fish to opioid drugs, Japanese medaka (Oryzias latipes) were exposed over a full life cycle to environmentally relevant (i.e. ng/L) concentrations of two opioids, codeine and fentanyl. Acute exposure of early life stage (ELS) of medaka to codeine resulted in slightly extended times to hatch, but no increase in embryo mortalities or reduced hatching success. Chronic exposure to codeine at a nominal concentration of 25,000 ng/L over a full life cycle interfered with growth, reducing the weight of the fish at maturity. Life cycle treatments with codeine at all test concentrations resulted in a significant reduction in the number of eggs produced in reproductive trials, as well as a reduction in the numbers of mature oocytes in adult females. High treatments with codeine also increased the percentage of immature sperm cells in adult males. Life cycle exposures to codeine also resulted in reduced whole-body concentrations of several hypothalamic-pituitary-gonadal (HPG) axis hormones, including reduced levels of luteinizing hormone in male and female fish and a reduction in 11-ketotestosterone in males and 17β-estradiol in females. Fentanyl did not affect reproduction or HPG hormones at the exposure concentrations tested, but high fentanyl exposures increased the mortality rate among ELS's of the F1 generation offspring from life cycle exposed adults. The results of this thesis contribute to the literature on the environmental impacts of microcontaminants of wastewater origin and, the potential for effects in fish exposed to opioids.Keywords: Opioids, microcontaminants, fentanyl, codeine, sexual development, reproduction.
Author Keywords: codeine, fentanyl, microcontaminants, opioids, reproduction, sexual development
Mindful or Mind Full? Exploring the Associations Between Relationships, Mindfulness, and Stress
Past research has indicated a relationship between attachment and mindfulness; however, less is known about the behavioural outcomes of this relationship. The purpose of the present study was to test a new, more in-depth structural model of the relationship between attachment and mindfulness, and further explore the effects of attachment and mindfulness session type (group or individual) on attendance and willingness to continue mindfulness. As predicted, both the self and other model of attachment were positively associated with mindfulness. Surprisingly, individuals who were initially interested in the follow up sessions reported significantly more negative models of others than individuals who were not interested. For the in-person sessions, no significant differences were found for participant attendance or willingness to continue based on attachment and/or type of session. The discussion of results highlights the importance of people's view of others for developing mindfulness traits and developing strong client-provider relationships in therapeutic and intervention settings.
Author Keywords: Adult attachment, Mindfulness, Stress
Olives in the Mountains: A Case Study of the Roman city of Sagalassos
Olives have been grown in the Mediterranean region for millennia and have been a staple crop in many of its cultures. This was never more true than during the Hellenistic (323 – 133 BC) and Roman (133 BC – AD 450) periods in the Mediterranean. This thesis examines the territory of the Roman city of Sagalassos in the region of Pisidia, modern province of Burdur, and determines if olives could have been cultivated in the territory. While there have been studies that state olives were cultivated in the territory during the Hellenistic and Roman periods, modern farmers as well as agronomic manuals state that such growth is not possible. This thesis present data that indicates that olives were grown in the territory of Sagalassos, but also examines the conditions olives require to grow and if such conditions existed in Pisidia. Through this I will be able to conclude whether the past presentation of data has does indeed prove that olives were grown within the territory of Sagalassos.
Author Keywords: Agricultural Decision Making, Olives, Pisidia, Roman Agriculture, Sagalassos, Turkey
Hibernian Imagination: A Study of Ireland's Violent Cultural Imaginary through Writing, Music, and Film
Artistic expressions such as writing, theatrical productions, music, and film arguably contribute to a culture's representation of itself to the outside world. Most cultures have been either read or misread through their artistic outputs over the course of history, although the Irish culture stands as a particularly misunderstood one. Through years of colonization and rebel warfare, the country's culture has acquired a particularly imagined depiction; violent, which through centuries has resulted in a flawed cultural imaginary today. This thesis presents this issue and proposes a means to better understand the Irish culture through a deeper understanding of the factors that have led the country's cultural imaginary to its current misrepresentative state. Through an exploration of texts, theatre, music, and film, this thesis uncovers the factors which have led to Ireland's current cultural depiction in hopes of creating a better understanding of the Irish culture.
Author Keywords: cultural imaginary, Ireland, Irish culture, Irish stereotypes, public image, stereotypes
"The Darkest Tapestry": Indian Residential School Memorialization at the Keeping Place at Fort Qu'Appelle, Saskatchewan.
This doctoral research project is a part of the quest for an inclusive telling of Canada's national identity and will focus on the creation of a memorialization Keeping Place model to commemorate the Indian Residential School system in Canada. My dissertation is interdisciplinary and contributes to the fields of cultural history, memory and post-colonial studies. In response to the TRC recommendation that calls on all Canadians to "develop and implement a national heritage plan and strategy for commemorating residential school sites, the history and legacy of residential schools, and the contributions of Indigenous peoples to Canada's history", this project aims to contribute a unique analysis and discourse to the existing literature as it will focus on developing a process of commemoration of the IRS system by uniting the architectural/geographical location not only as a place/space of colonizing "perpetrator architecture" but also as a Keeping Place and "site of memory/lieu de memoire" or conscience. This project will also engage the concepts of "Indigenous Métissage" and "Cultural Interface" to aid in the creation of an educational commemoration and reconciliation Keeping Place model for all Canadians.
Author Keywords: canada, indian residential schools, keeping place , memory, saskatchewan, sites of memory
Monitoring and fate of selected tire-derived organic contaminants
Road runoff is a vector for the transport of potentially toxic chemicals into receiving waters. In this study, selected tire-derived chemicals were monitored in surface waters of rivers adjacent to two high traffic highways in the Greater Toronto Area in Ontario, Canada. Composite samples were collected from the Don River and Highland Creek in the GTA during 5 hydrological events that occurred in the period between early October 2019 and late March 2020, as well as an event in August 2020. Grab samples were collected from these rivers during a period of low flow in August 2020, as well as during a storm event in July of 2020. Analysis was performed using ultra-high pressure liquid chromatography with high resolution mass spectrometric detection (UHPLC-HRMS). Hexamethoxymethylmelamine (HMMM), a cross-linker of tire material, was detected at elevated concentrations (> 1 µg/L) during rain events in the fall and winter of 2019-20 and during a period of rapid snow melt in early March of 2020. These samples were also analyzed for the tire additive, 6PPD, and its oxidation by-product, 6PPD-quinone, as well as 1,3-diphenylguanidine (DPG). In many samples collected from the Don River and Highland Creek during storm events, the estimated concentrations of 6PPD-quinone exceeded the reported LC50 of 0.8 µg/L for Coho salmon exposed to this compound. Temporal samples collected at 3-hour intervals throughout rain event the October 2020 showed that there was a delay of several hours after the start of the event before these compounds reached their peak concentrations. In addition, 26 candidate transformation products and precursor compounds of HMMM were monitored; 15 of these compounds were detected in surface waters in the GTA. The maximum total concentration of this class of methoxymethylmelamine compounds in surface water samples was estimated to be 18 µg/L. There is limited knowledge about the properties of HMMM, its precursor contaminants, and its transformation compounds, as well as their fate in the environment. COSMO-RS solvation theory was used to estimate the physico-chemical properties of HMMM and its derivatives. Using the estimated values for these properties (e.g., solubility, vapour pressure, log Kow) as inputs to the Equilibrium Criterion (EQC) fugacity-based multimedia model, the compounds were predicted to readily partition into aqueous media, with mobility in water increasing with the extent of loss of methoxymethyl groups from HMMM. Overall, this study contributes to the growing literature indicating that potentially toxic tire-wear compounds are transported via road runoff into urban surface waters. In addition, this study provides insight into the environmental behaviour of HMMM and its transformation products.
Author Keywords: 6PPD-quinone, COSMOtherm, Fugacity, Hexamethoxymethylmelamine, Road runoff, Tire wear
Why fish when you could farm? A stable isotope analysis of changing diet and ritual killing in the Virú Valley, Peru
Stable carbon and nitrogen isotope analyses were performed on individuals from the Virú Valley, Peru to better understand the people and society in this region of early-state development. This analysis also sheds light on the lives of individuals from a ritual killing event at Huaca Santa Clara. Bone collagen stable isotope analysis revealed that all individuals had diets predominantly based on terrestrial resources, while incremental hair segments, skin, tendon, and nails revealed that marine resources made small, non-seasonal contributions to the diet. The prioritization of farming over fishing in the Virú Valley may be indicative of the economic specialization of agricultural and marine subsistence practices by distinct communities and the tendency of state-level societies to monopolize agricultural resources. The isotopic compositions of the individuals from the Huaca Santa Clara ritual killing event showed no evidence of a controlled diet before their death and identified a likely migrant to Virú.
Author Keywords: Diet, Early Intermediate Period, Early-State Development, North Coast Peru, Ritual Killing Event, Stable Isotope Analysis
A Comparison of Nature Activities: Citizen Science, Environmental Education, and Mere Nature Exposure
Research shows spending time in nature can result in many positive effects, including improving mood, connection to nature, and environmental concern. Certain activities may increase these positive effects of nature exposure. Citizen science (non-scientists collecting data to contribute to science) and environmental education (receiving information about the environment) are two potential ways to boost the positive effects of nature exposure. But little research has been done comparing citizen science with environmental education. To address this gap in knowledge, undergraduate participants were randomly assigned to spend five minutes outside daily, for two weeks, either simply observing nature, looking for birds, or looking for and recording bird sightings. Over time, all groups experienced improvements in mood, connection to nature, and environmental concern. However, connection to nature increased the most in people who simply observed nature. Unexpectedly, simply spending time in nature was the most effective intervention. Limitations and future directions are discussed.
Author Keywords: Citizen Science, Emotional Well-Being, Environmental Concern, Environmental Education, Nature Exposure, Nature Relatedness
Untitled (dissertation 4.2)
Untitled (dissertation 4.2) offers a performative take on the political implications of digital archives. I argue that technological developments and their increasing ubiquity has not resulted in more reliable archives; it has facilitated the exacerbation of what Jacques Derrida calls mal d'archive—or archive fever—which refers to the institutionally supported passion to preserve that is perpetually threatened by the inevitably of loss. A performative perspective, specifically derived from the work of contemporary performance theorists and artists, affords a contemporary archival practice that not only accepts, but is informed by mal d'archive because it shifts the focus from what is preserved to how it has become and continues to be preservable through archival acts. This is important in our contemporary moment because the ubiquity of digital technologies has exacerbated the symptoms of mal d'archive: a rapid increase in both the formal and informal production of preservable content, and consequently, as Derrida reminds us, archival violence.
Untitled (dissertation 4.2) also includes a performative engagement with mal d'archive through two interludes. The first interlude features what I am calling "glitch-utterances," which refers to the visual representations of technological mishaps. The documents in the second interlude—an iteration of the exhibition catalogue that resulted from my 2020 artist residency at the Art Gallery of Peterborough—engage with the productive function of the archive because they performatively constitute the exhibition as having happened regardless of whether or not it actually occurred, which, significantly, it did not.
I conclude Untitled (dissertation 4.2) with a look at the ecological impact of digital archives—perhaps an "ecological fever." It is not my intention to offer a solution for this "ecological fever," nor address its full impact. My aim is to conclude this dissertation with a supplement of sorts: a look at the ecological impact of digital archives because I feel it is irresponsible not to given their increasing ubiquity. With this in mind, the glitch-utterances featured in both interludes can perform an important role in calling attention to the technological materialities and computational processes that are rendered invisible by Big Tech companies via metaphors—the ethereal Cloud metaphor, for example. These glitch-utterances point to the very material substrates that support the virtual, and can thus act as an important reminder of the ecological consequences of digital archives, which, like archival practices, are tied to institutional agendas.
Author Keywords: Archive , Curation , Digital Archive, Documentation, Multimedia performance, Performativity