Index Catalog // ScholarsArchive@OSU

Drought, dispersal, and community dynamics in arid-land streams

Creator:: Bogan, Michael T.
Abstract:: Understanding the mechanisms that regulate local species diversity and community structure is a perennial goal of ecology. Local community structure can be viewed as the result of numerous local and regional processes; these processes act as filters that reduce the regional species pool down to the observed local community. In...
Resource Type:: Dissertation
Full Text:: . © Copyright by Michael T. Bogan July 10, 2012 All Rights Reserved Drought, Dispersal, and

Diversity and community structure of aquatic insects in isolated montane desert streams

Creator:: Bogan, Michael T.
Abstract:: Local aquatic insect diversity and community structure is the result of multiple local and regional factors, and observed patterns depend upon the spatial and temporal scale under examination. Isolated stream systems in arid regions represent a new challenge in understanding the drivers of diversity and community structure, as most studies...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Michael T. Bogan for the degree of

Severe Drought Drives Novel Community Trajectories in Desert Stream Pools

Creator:: Bogan, Michael T. and Lytle, David A.
Abstract:: 1. Ecological communities can be relatively stable for long periods of time, and then, often as a result of disturbance, transition rapidly to a novel state. When communities fail to recover to pre-disturbance configurations, they are said to have experienced a regime shift or to be in an alternative stable state....
Resource Type:: Article
Full Text:: Freshwater Biology 2011 Bogan, Michael T. Department of Zoology, Oregon State University

The role of costimulation and adjuvants in the development of T cell effector and memory responses

Creator:: Maxwell, Joseph R.
Abstract:: T cells are one of the key cells in the immune system. Although they are not the first line of defense against a pathogen, their functions can greatly enhance the phagocytosis and destruction of pathogens as well as the development of antibody responses. Furthermore, even when responding T cells have...
Resource Type:: Dissertation
Full Text:: Costimulation and Adjuvants in the Development of T Cell Effector and Memory Responses. Abstract approved

The effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin on T cell activation

Creator:: Shepherd, David M.
Abstract:: The immune system has been identified as a very sensitive target for the toxic effects of 2,3,7,S-tetrachlorodibenzo-p-dioxin (TCDD). Exposure to TCDD has been shown to disrupt the generation of both cell-mediated and humoral T cell-dependent immunity in laboratory animals; however, the mechanism remains unknown. In this dissertation, the hypothesis is...
Resource Type:: Dissertation
Full Text:: -Tetrachlorodibenzo-p-dioxin on T Cell Activation by David M. Shepherd A DISSERTATION submitted to

Broad-scale patterns of invertebrate richness and community composition in temporary rivers : effects of flow intermittence

Creator:: Datry, T., Larned, S. T., Fritz, K. M., Bogan, M. T., Wood, P. J., Meyer, E. I., and Santos, A. N.
Abstract:: Temporary rivers are increasingly common freshwater ecosystems, but there have been no global syntheses of their community patterns. In this study, we examined the responses of aquatic invertebrate communities to flow intermittence in 14 rivers from multiple biogeographic regions covering a wide range of flow intermittence and spatial arrangements of...
Resource Type:: Article
Full Text:: ., Fritz, K. M., Bogan, M. T., Wood, P. J., Meyer, E. I. and Santos, A. N. (2014), Broad-scale patterns of

Investigation of the mechanism of 2,3,7,8-tetrachlorodibenzo-p-dioxin-induced immunotoxicity in C57B1/6 mice : effects on T cell activation

Creator:: Prell, Rodney A.
Resource Type:: Dissertation
Full Text:: of 2,3,7,8-tetrachlorodibenzo-p- dioxin-Induced Immunotoxicity in C57B1/6 Mice: Effects on T Cell

Testing for location after transformation to normality

Creator:: Halawa, Adel Mahmoud
Abstract:: In the problem of testing the median using a random sample from a certain distribution, and if no other parametric family is suggested, the t-test is known to be the optimal procedure when this distribution is normal. If the sample appears to be non-normal, one has the choice either to...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Adel M. Halawa for the degree of Doctor of Philosophy in Statistics

Uncovering the mechanism of IL-4-mediated T cell survival

Creator:: Moscibrocki, Cathleen M.
Abstract:: Although IL-4 is a well-characterized multi-functional cytokine, its role as a survival factor in T cells is not completely understood. In an attempt to uncover IL-4-mediated survival, we studied caspase activation in primary mouse T lymphocytes undergoing death by neglect, activation-induced or steroid-induced cell death. Here, we identify the executioner...
Resource Type:: Masters Thesis
Full Text:: Mechanism of IL-4-mediated T Cell Survival by Cathleen M. Moscibrocki A THESIS submitted to Oregon State

The influence of aryl hydrocarbon receptor activation on T cell fate

Creator:: Funatake, Castle J.
Abstract:: 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) and related compounds are well-recognized for their immunosuppressive activity, which is mediated through an intracellular receptor and transcription factor, aryl hydrocarbon receptor (AhR). Laboratory animals exposed to TCDD are less resistant to infection and have severely impaired humoral and cell-mediated immune responses. This dissertation addressed the hypothesis that...
Resource Type:: Dissertation
Full Text:: Hydrocarbon Receptor Activation on T Cell Fate. approved: 2,3,7, 8-Tetrachlorodibenzo-p-dioxin (TCDD) and

ScholarsArchive@OSU

Drought, dispersal, and community dynamics in arid-land streams

Diversity and community structure of aquatic insects in isolated montane desert streams

Severe Drought Drives Novel Community Trajectories in Desert Stream Pools

The role of costimulation and adjuvants in the development of T cell effector and memory responses

The effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin on T cell activation

Broad-scale patterns of invertebrate richness and community composition in temporary rivers : effects of flow intermittence

Investigation of the mechanism of 2,3,7,8-tetrachlorodibenzo-p-dioxin-induced immunotoxicity in C57B1/6 mice : effects on T cell activation

Testing for location after transformation to normality

Uncovering the mechanism of IL-4-mediated T cell survival

The influence of aryl hydrocarbon receptor activation on T cell fate

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