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Parasites of the grunion, Leuresthes tenuis (Ayres)

Creator:: Olson, Andrew Clarence
Resource Type:: Dissertation
Full Text:: ) PARASITES OF THE GRUNION, LEURES'l'BES TENUIS (AYRES) -. by ANDREW CLARENCE OLSON, JR. A THESIS

Early succession in beds of the red alga, Iridaea cornucopiae Post. & Rupr. (Gigartinaceae) : alternate pathways

Creator:: Olson, Annette M.
Abstract:: Multiple successional sequences have been observed following disturbance in communities on marine hard substrata. Observations of the turf-forming alga, Iridaea cornucopiae Post. & Rupr. (Gigartinaceae), suggest that I. cornucopiae may assume its dominance by its ability to vegetatively pre-empt space. High limpet densities in the natural community, suggest that I....
Resource Type:: Masters Thesis
Full Text:: . Olson for the degree of Master of Science in Zoology presented on May 13, 1985 Title: Early Succession

The Effects of Nitrate and a Pathogenic Fungus, Batrachochytrium dendrobatidis, on Amphibians

Creator:: Negru, Delia
Abstract:: The current rate of global biodiversity loss and extinctions is unparalleled and a major concern. Freshwater organisms are facing particularly rapid rates of biodiversity loss. Amphibians, which require an aquatic environment for part of their life cycle, are one of the most vulnerable vertebrate groups. Amphibians are experiencing population declines,...
Resource Type:: Masters Thesis
Full Text:: Andrew R. Blaustein The current rate of global biodiversity loss and extinctions is

The effects of pathogens, UV-B radiation, and introduced species on amphibians in the Pacific Northwest

Creator:: Kiesecker, Joseph Michael
Abstract:: I examined two amphibian communities to assess factors that may impact amphibian biodiversity. The results suggest that the potential factors which influence the maintenance of amphibian biodiversity are multi-faceted and thus, attempts to understand these factors must reflect these complexities. I investigated factors that influenced the susceptibility of western toad...
Resource Type:: Dissertation
Full Text:: approved: Andrew R. Blaustein I examined two amphibian communities to assess factors that may

Evolutionary and ecological interactions affecting seaweeds

Creator:: Olson, Annette M.
Abstract:: The term "interaction" in evolutionary biology and ecology describes the relationships among variables in two classes of causal models. In the first, "interaction" refers to the influence of a single putatively causal variable on a variable of interest. In the second class of models, the term applies when a third...
Resource Type:: Dissertation
Full Text:: seaweeds AN ABSTRACT OF THE THESIS OF Annette M. Olson for the degree of Doctor of Philosophy in

The ecological and behavioral dynamics of breeding in three sympatric anuran amphibians

Creator:: Olson, Deanna H.
Abstract:: Breeding ecology and behavior were investigated in a field study of three sympatric anuran amphibians in the Oregon Cascade Mountains: the western toad (Bufo boreas), the Cascades frog (Rana cascadae) and the Pacific treefrog (Hyla regilla). A comprehensive study of the western toad mating system was conducted at three populations...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Deanna H. Olson for the degree of

Population and conservation genetic structure of the Cascades frog, Rana cascadae throughout the species' range

Creator:: Monsen, Kirsten J.
Abstract:: A major goal of conservation biology is to elucidate the population genetic structure in threatened species and assess the relative importance of the evolutionary forces that shape that population genetic structure. I conducted three studies in the declining amphibian Rana cascadae to assess levels of population genetic differentiation and the...
Resource Type:: Dissertation
Full Text:: , Andrew Blaustein, Deanna Olson, and Fredrick Stormshak for their support and encouragement. I would

All hosts are not created equal : variation in amphibian responses to an emerging fungal pathogen and why it matters

Creator:: Gervasi, Stephanie S.
Abstract:: Emerging infectious diseases are increasing globally and are a threat to human, wildlife, and ecosystem health. The emerging fungal pathogen, Batrachochytrium dendrobatidis (Bd), or amphibian chytrid fungus, is associated with worldwide amphibian population declines and extinctions. Bd has been found on every continent where amphibians exist and has been documented...
Resource Type:: Dissertation
Full Text:: Responses to an Emerging Fungal Pathogen and Why it Matters Abstract approved: Andrew R. Blaustein

Unpalatability as an antipredator defense in anuran larvae

Creator:: Peterson, Jeffrey A.
Abstract:: The tadpoles of several anuran species with groupforming larvae are relatively unpalatable to many of their potential predators. To more fully understand the role of palatability and its relationship to group formation as an antipredator defense in anuran amphibian larvae, I investigated the palatabilities of the larvae of three species...
Resource Type:: Masters Thesis
Full Text:: approved: Redacted for Privacy 'Andrew R. Bldis`tein-77 The tadpoles of several anuran species with group

Complexity in host-pathogen dynamics : dispersal uncertainties, metapopulation persistence and the role of a changing climate

Creator:: Xie, Yang
Abstract:: Emerging infectious diseases impact both human and wildlife populations. Infectious agents, in particular the aquatic fungus Batrachochytrium dendrobatidis (chytrid), have an influential role in driving global amphibian population declines. The emergence of the chytrid fungus has aspects of both geographic spread as well as climate shifts altering environmental conditions and...
Resource Type:: Dissertation
Full Text:: Abstract approved: _____________________________________________________________________ Andrew R

ScholarsArchive@OSU

Parasites of the grunion, Leuresthes tenuis (Ayres)

Early succession in beds of the red alga, Iridaea cornucopiae Post. & Rupr. (Gigartinaceae) : alternate pathways

The Effects of Nitrate and a Pathogenic Fungus, Batrachochytrium dendrobatidis, on Amphibians

The effects of pathogens, UV-B radiation, and introduced species on amphibians in the Pacific Northwest

Evolutionary and ecological interactions affecting seaweeds

The ecological and behavioral dynamics of breeding in three sympatric anuran amphibians

Population and conservation genetic structure of the Cascades frog, Rana cascadae throughout the species' range

All hosts are not created equal : variation in amphibian responses to an emerging fungal pathogen and why it matters

Unpalatability as an antipredator defense in anuran larvae

Complexity in host-pathogen dynamics : dispersal uncertainties, metapopulation persistence and the role of a changing climate

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