Trent University Graduate Thesis Collection

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    tula:etd
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    1 item
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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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    Habitat patch size and breeding site quality drive relative abundance of Ambystoma salamander larvae

    Year: 2025, 2025
    Member of: Trent University Graduate Thesis Collection
    Name(s): Creator (cre): McDonald, Jordan, Thesis advisor (ths): Hossie, Thomas J, Thesis advisor (ths): Murray, Dennis, Degree committee member (dgc): Wilson, Chris, Degree granting institution (dgg): Trent University
    Abstract: <p>Amphibian biodiversity is in global decline, driven primarily by habitat loss and fragmentation arising from landcover alteration. For pond-breeding amphibians, larval abundance should be governed by aquatic breeding site quality, surrounding terrestrial habitat characteristics, and proximity to neighbouring populations. If safeguarding salamander populations is a priority, conservation… more

    Variable Sensitivity of Growth Rate to Calcium Limitation and Sodium Chloride Toxicity Tolerance Among Populations of Daphnia pulicaria from Kawartha Highland Lakes

    Year: 2025, 2025
    Member of: Trent University Graduate Thesis Collection
    Name(s): Creator (cre): Cook, Sarah Katelyn, Thesis advisor (ths): Frost, Paul C, Degree committee member (dgc): Shafer, Aaron BA, Degree committee member (dgc): Hossie, Thomas J, Degree granting institution (dgg): Trent University
    Abstract: <p>Calcium (Ca) limitation and sodium chloride (NaCl) toxicity tolerance are potential controllers of Daphnia populations. D. pulicaria neonates collected from 14 Kawartha Highland lakes were exposed to 6 Ca concentrations (0.5-5.0 mg Ca L-1) over 6 days. We did not find differences in maximum mass-specific growth rate or half-maximum thresholds between source lakes. Growth rates were… more

    Summer Movement Ecology of Showshoe Hares (Lepus americanus) during a Population Cycle

    Year: 2024, 2024
    Member of: Trent University Graduate Thesis Collection
    Name(s): Creator (cre): Miller, Hannah, Thesis advisor (ths): Murray, Dennis L, Degree committee member (dgc): Schaefer, Jim, Degree committee member (dgc): Burness, Gary, Degree committee member (dgc): Raby, Graham, Degree granting institution (dgg): Trent University
    Abstract: <p>I tracked summer movements and activity of snowshoe hares (Lepus americanus) in southwestern Yukon, Canada, during their population cycle (2015–2022) to assess the primary drivers of movement. Hares exhibited variable movement and activity during the cycle, exhibiting increased home range size and higher daily displacement during low population densities. Males exhibited more dramatic… more
    Full Text: SUMMER MOVEMENT ECOLOGY OF SNOWSHOE HARES (LEPUS AMERICANUS) DURING A POPULATION CYCLE A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Masters of Science in the Faculty of Arts and …

    Summer Movement Ecology of Showshoe Hares (Lepus americanus) during a Population Cycle

    Year: 2024, 2024
    Member of: Trent University Graduate Thesis Collection
    Name(s): Creator (cre): Miller, Hannah, Thesis advisor (ths): Murray, Dennis L, Degree committee member (dgc): Schaefer, Jim, Degree committee member (dgc): Burness, Gary, Degree committee member (dgc): Raby, Graham, Degree granting institution (dgg): Trent University
    Abstract: <p>I tracked summer movements and activity of snowshoe hares (Lepus americanus) in southwestern Yukon, Canada, during their population cycle (2015–2022) to assess the primary drivers of movement. Hares exhibited variable movement and activity during the cycle, exhibiting increased home range size and higher daily displacement during low population densities. Males exhibited more dramatic… more