Trent University Graduate Thesis Collection

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    tula:etd
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    Copyright for all items in the Trent University Graduate Thesis Collection is held by the author, with all rights reserved, unless otherwise noted.
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    Displaying 81 - 85 of 85

    Cities of the Future or a Relic of the Past? The Universality of Low-Density Urbanism Among the Ancient Maya

    Year: 2024, 2024
    Member of: Trent University Graduate Thesis Collection
    Name(s): Creator (cre): Koch, Timothy Alexander Eland, Thesis advisor (ths): Haines, Helen, Thesis advisor (ths): McLellan, Alec, Degree committee member (dgc): Fitzsimons, Rodney, Degree granting institution (dgg): Trent University
    Abstract: <p>Low-density urbanism is ubiquitous in the industrialized world, with suburbs and sprawling urban zones like the American Northeastern Seaboard being classified as such. Due to
    outsized environmental impacts and perceived unsustainability, this settlement pattern is often
    maligned. As one of the few prominent examples of agrarian-based low-density urbanism, the
    ancient Maya can provide… more

    Accuracy and reliability of microscopic characteristics to identify Typha species and their hybrids

    Year: 2024, 2024
    Member of: Trent University Graduate Thesis Collection
    Name(s): Creator (cre): Kowalczyk, Olivia Samantha, Thesis advisor (ths): Freeland, Joanna, Thesis advisor (ths): Dorken, Marcel, Degree committee member (dgc): Bowman, Jeff, Degree granting institution (dgg): Trent University
    Abstract: <p>Advanced generation/backcrossed (non-F1) hybrids can be challenging to identify when their traits are similar to those of parental taxa, F1 hybrids, or both. This is particularly evident in the North American hybrid zone involving Typha latifolia, T. angustifolia, F1 T. × glauca and non-F1 hybrids. Cattails are challenging to differentiate based on gross morphological characteristics.… more

    Short-Term Impacts of Agricultural Land Use Change on Soil Health and Nitrogen Cycling Microbial Communities

    Year: 2024, 2024
    Member of: Trent University Graduate Thesis Collection
    Name(s): Creator (cre): Kularathne, Ridmani Hansika, Thesis advisor (ths): Thompson, Karen, Degree committee member (dgc): Eimers, Catherine, Degree committee member (dgc): Power, Ian, Degree granting institution (dgg): Trent University
    Abstract: <p>Glyphosate burndown and tillage, followed by the cultivation of cash crops, are frequently used techniques in LUC from perennial cropping systems (PS) to annual cropping systems (AS). Agricultural LUC can result in the loss of soil nitrogen (N) via emission of nitrous oxide (N2O), a potent greenhouse gas (GHG). The purpose of this thesis is to investigate the short-term impacts of… more

    Nutrient dynamics and stoichiometry in stormwater management ponds

    Year: 2024, 2024
    Member of: Trent University Graduate Thesis Collection
    Name(s): Creator (cre): Lamond, Marisha, Thesis advisor (ths): Xenopoulos, Marguerite A., Degree committee member (dgc): Frost, Paul C., Degree committee member (dgc): Eimers, M. Catherine, Degree granting institution (dgg): Trent University
    Abstract: <p>Although stormwater management ponds (SWMPs) are frequently used to mitigate flooding in urban areas, we still do not fully understand how these systems impact water quality in a watershed. Currently, most research focuses on the effectiveness of SWMPs to retain nutrients during high flows, even though there is potential for internal nutrient releases to occur in these systems during low… more

    Impacts of embryo incubation temperature on ontogenic thermal tolerance of brook trout (Salvelinus fontinalis)

    Year: 2024, 2024
    Member of: Trent University Graduate Thesis Collection
    Name(s): Creator (cre): Lechner, Emily Rebekka, Thesis advisor (ths): Raby, Graham D, Thesis advisor (ths): Wilson, Chris C, Degree committee member (dgc): Kapron, Carolyn, Degree granting institution (dgg): Trent University
    Abstract: <p>I investigated the climate vulnerability of a cold-water salmonid by observing the upper thermal tolerance of brook trout (Salvelinus fontinalis) across multiple life stages. Using hatchery- and wild-ancestry fish, I assessed variation in thermal tolerances and carryover effects within and among brook trout life stages and populations that were reared under varying winter thermal regimes… more