Trent University Graduate Thesis Collection

Item Description

Identifier

tula:etd

Type

Collection

Language

eng

Extent

1 item

Rights

Displaying 1 - 8 of 8

Results per page

Displaying 1 - 8 of 8

Host Population Immunogenetics in a Changing World: Signatures of Selection in the Context of Endemic and Invasive Diseases in Wildlife

Baecklund_trentu_0513D_11232-Thumbnail Image.png

Year: 2025, 2025

Member of: Trent University Graduate Thesis Collection

Name(s): Creator (cre): Baecklund, Tristan Mackenzie, Thesis advisor (ths): Kyle, Christopher J, Degree committee member (dgc): Donaldson, Michael, Degree committee member (dgc): Shafer, Aaron, Degree committee member (dgc): Brown, Glen, Degree granting institution (dgg): Trent University

Abstract: Heterogeneous environments impose discordant selective pressures on natural populations, where disparate biotic/abiotic factors and variable population connectivity, yield mosaic patterns of genetic variation on the landscape. The ability to maintain or change genetic mosaics of populations becomes key to persistence, as species increasingly need to adapt to rapidly changing… more

Effects of a Topographical Gradient on Food Availability, Nest Site Selection, Nest Initiation, and Nest Success for Two Small, Low Arctic Breeding Bird Species

Bonnett_trentu_0513N_11253-Thumbnail Image.png

Year: 2025, 2025

Member of: Trent University Graduate Thesis Collection

Name(s): Creator (cre): Bonnett, Sarah, Thesis advisor (ths): Nol, Erica, Thesis advisor (ths): Smith, Paul A, Degree committee member (dgc): Nol, Erica, Degree committee member (dgc): Smith, Paul A, Degree committee member (dgc): Brown, Glen, Degree granting institution (dgg): Trent University

Abstract: Climate change affects birds' reproductive ecology by altering breeding timing, distribution, and habitat suitability. Snowmelt patterns complicate these changes affecting habitat availability and suitability for birds and their arthropod prey. Snow varies as a function of both large-scale climate patterns and local-scale topography. I used elevational gradients as a proxy for local… more

An evaluation of quantitative methods to estimate abundance of nesting Canada geese in the Hudson Bay Lowlands

Poppleton_trentu_0513N_11230-Thumbnail Image.png

Year: 2024, 2024

Member of: Trent University Graduate Thesis Collection

Name(s): Creator (cre): Poppleton, Matthew, Thesis advisor (ths): Brown, Glen, Thesis advisor (ths): Schaefer, Jim, Degree committee member (dgc): Koen, Erin, Degree granting institution (dgg): Trent University

Abstract: Estimation of population abundance from samples has inherent practical challenges. Moreover, analytical methods to estimate abundance may vary in statistical assumptions and prediction uncertainties. I evaluated the performance of design-based and model-based methods to estimate Canada geese (Branta canadensis) abundance based on aerial fixed-width transect surveys in the Hudson Bay… more

Direct and indirect effects of nest predation risk on Arctic breeding shorebirds: Does availability of alternative prey contribute to nest mortality?

Huang_trentu_0513N_11217-Thumbnail Image.png

Year: 2024, 2024

Member of: Trent University Graduate Thesis Collection

Name(s): Creator (cre): Huang, Richard Kin Keung, Thesis advisor (ths): Nol, Erica, Thesis advisor (ths): Brown, Glen, Degree granting institution (dgg): Trent University

Abstract: Arctic breeding shorebirds are often considered alternate or secondary prey to avian and terrestrial predators that primarily feed on cyclic populations of rodents. Predation risk can strongly influence habitat selection; however, there is limited understanding of how nest placement by shorebirds and subsequent risk of nest predation are affected by spatiotemporal patterns involving the… more

Active layer thermal regime in subarctic wetlands at the southern edge of continuous permafrost in Canada

Year: 2022, 2022

Member of: Trent University Graduate Thesis Collection

Name(s): Creator (cre): Muir, Gillian, Thesis advisor (ths): Brown, Glen, Degree committee member (dgc): Nol, Erica, Degree committee member (dgc): Metcalfe, Robert, Degree committee member (dgc): Hu, Baoxin, Degree granting institution (dgg): Trent University

Abstract: The fine-scale controls of active layer dynamics in the subarctic at the southern edge of continuous permafrost are currently poorly understood. The goal of this thesis was to understand how environmental conditions associated with upland tundra heath, open graminoid fen, and palsas/peat plateaus affected active layer thermal regime in a subarctic peatland in northern Canada. Indices of… more

Full Text: Active layer thermal regime in subarctic wetlands at the southern edge of continuous permafrost in Canada A Thesis Submitted to the Committee of Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the Faculty …

Breeding Phenology and Migration Habits of Whimbrel (Numenius phaeopus) in the Hudson Bay Lowlands, Canada

Year: 2020, 2020

Member of: Trent University Graduate Thesis Collection

Name(s): Creator (cre): Mackellar, Hannah, Thesis advisor (ths): Nol, Erica, Thesis advisor (ths): Brown, Glen, Degree committee member (dgc): Burness, Gary, Degree committee member (dgc): Smith, Paul, Degree granting institution (dgg): Trent University

Abstract: Understanding breeding and migration habits of Whimbrel (Numenius phaeopus) in the Hudson Bay Lowlands is important for the conservation of this population. I monitored Whimbrel at two breeding sites: the Churchill region of Manitoba and Burntpoint, Ontario. Annual average nest initiation timing was highly variable and successful nests were initiated significantly earlier than those that… more

Full Text: BREEDING PHENOLOGY AND MIGRATION HABITS OF WHIMBREL (Numenius phaeopus) IN THE HUDSON BAY LOWLANDS, CANADA A Thesis submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the …