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Filtering by: Creator Johnson, Ben Remove constraint Creator: Johnson, Ben Degree Field Integrative Biology Remove constraint Degree Field: Integrative Biology

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  • Effects of Diversity on Emerging Infectious Diseases of Amphibians

    Creator:
    Snyder, Paul W.
    Abstract:
    Species declines and extinctions have been recorded across taxa as evidence of an ongoing global biodiversity crisis. Amphibians are at the forefront of these declines with nearly one third of amphibian species estimated to be at risk of extinction. While many factors contribute to population declines and extinctions, the role...
    Resource Type:
    Dissertation
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    provided a shoulder to cry on. Dr. Ben Dalziel, whose door is always open, helped me to prioritize and

  • The Effects of Host and Pathogen Variation on Infection Dynamics in the Amphibian-Chytrid System

    Creator:
    Dang, Trang D.
    Abstract:
    This dissertation uses manipulative experiments to explore amphibian-Bd infection dynamics. Although there has been almost two decades research since the discovery of Bd, many questions still remain regarding what conditions mediate chytridiomycosis virulence. My research shows how certain host and pathogen factors can influence disease virulence. Identifying how host and...
    Resource Type:
    Dissertation
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    always helped remind me to ‘zoom out.’ Ben Dalziel’s inclusion in my committee was extremely helpful

  • Drivers of Kelp Forest Responses to Global Change: From Populations to Policies

    Creator:
    Hamilton, Sara L.
    Abstract:
    Kelps are large brown algae in the order Laminariales and are foundation species that form the basis of kelp forests. Present across a quarter of the world’s coastlines, kelp forests provide diverse services to coastal communities, as habitat for commercially and culturally important species, as a food source for humans...
    Resource Type:
    Dissertation
    Full Text:
    , Christi Kruse, Steven Johnson, Meredith McPherson, Rebecca Mostow, Ciera Villegas, Sloane Rittner

  • Amphibian Population Declines and Extinctions: Disease in Amphibian Communities with Cascading Effects in Freshwater Communities

    Creator:
    Harjoe, Carmen C.
    Abstract:
    Earth is experiencing unprecedented biodiversity loss. Amphibians are at the forefront of this biodiversity loss, with species declines estimated to be more severe than those of birds and mammals. Amphibian population declines and extinctions are driven by a number of factors including climate change, habitat destruction, contaminants and disease but...
    Resource Type:
    Dissertation
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    work. Dr. Ben Dalziel, thank you for serving as a brilliant sounding board for my ideas and working

  • Emergent Properties of Animal Social Networks: Five Stories in Five Systems

    Creator:
    Devan-Song, E. Anne
    Abstract:
    Animals aggregate and interact in nonuniform and nonrandom patterns, which lead to group level characteristics that have important evolutionary and ecological consequences. Network analysis provides a useful conceptual framework for linking animal interactions at all scales from dyads to communities, to populations and ecosystems. Despite exciting theoretical and applied advances...
    Resource Type:
    Dissertation
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    , Steven Johnson, Nico Gomez, Ernesto Villarino, John Woodill, Ginny Katz, and Val Chang. Thank you

  • The evolutionary stability of partial migration

    Creator:
    Ohms, Haley A.
    Abstract:
    Natural selection, in its most basic form, is described as a process in which traitsincrease or decrease in frequency depending on their fitness, and only the trait withthe highest fitness will remain in the population. Yet, populations rarely have asingle `optimal' trait. The way natural selection maintains this observed variationwithin...
    Resource Type:
    Dissertation
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    family Jeanne and Ben Sponsel, Tristan Ohms and Emily Prest, Jacob Ohms, Dan and Carol Braaten, Alison

  • Navigating food and foes in the savanna : nutrition, infections and spatial ecology in African buffalo

    Creator:
    Combrink, Hendrik J.
    Abstract:
    The intricate relationship between wildlife health and the quality of their environment is well established, with technological advances increasing our understanding and aiding the unraveling of underlying mechanisms. Large herbivores require forage of sufficient quality to maintain their condition to reproduce and survive, all while warding off parasites and predators...
    Resource Type:
    Dissertation
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    graduate committee, Michelle Steinauer, Ben Dalziel, and Lisa Madsen, I really appreciate your support and

  • Adaptive Potential of Coastal Invertebrates to Environmental Stressors and Climate Change

    Creator:
    Burton, Andrea R.
    Abstract:
    Climate change presents multiple stressors that are impacting marine life. As carbon dioxide emissions continue to increase in the atmosphere, atmospheric and sea water temperatures increase. In addition, more carbon dioxide is absorbed into the oceans, reducing pH and aragonite saturation state, resulting in ocean acidification (OA). Tightly coupled with...
    Resource Type:
    Dissertation

  • Explorations Into Who is Doing Freshwater Science and How We are Altering Waterscapes

    Creator:
    Abernethy, Erin F.
    Abstract:
    The United States of America and the world are faced with three massive intertwining challenges at this time: COVID-19, racial inequity, and climate change. As a species, humans must come together and collectively address these challenges to preserve our humanity and make our world a more just and livable place...
    Resource Type:
    Dissertation

  • Grazer-resource Behavior, Interactions, and Feedbacks Control Kelp-forest Dynamics and Stability

    Creator:
    Randell, Zachary H.
    Abstract:
    How the direct and indirect effects of species interactions cascade to affect community structure, functioning, and stability is a fundamental question in ecology. In temperate kelp forests, species interactions, in conjunction with environmental processes, produce rich spatiotemporal dynamics. Arguably the most dramatic of these are abrupt shifts in community state,...
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    Dissertation
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    ; Johnson 2006). Kelp exhibit rapid growth that has the potential to sequester significant amounts of