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Population genetic structure and ecology of Rhizobium leguminosarum

Creator:: Strain, Steven R.
Resource Type:: Dissertation
Full Text:: Population genetic structure and ecology of Rhizobium

Ecology of a soil population of Rhizobium leguminosarum bv. trifolii

Creator:: Leung, Kam-tin
Resource Type:: Dissertation
Full Text:: Ecology of a soil population of Rhizobium leguminosarum

The ecology of parasite interactions within Chinook salmon

Creator:: Hurst, Charlene N.
Abstract:: The within-host interactions that can occur as a result of mixed infections in wildlife likely influence the outcome of an infection. We investigated the infection frequency and outcome as well as the potential mechanisms regulating mixed infections with two Ceratonova shasta genotypes within the Chinook salmon host. Previous research in...
Resource Type:: Dissertation
Full Text:: : The Ecology of Parasite Interactions within Chinook Salmon. Abstract approved

Chemical and Genetic Investigations of Toxic Freshwater Cyanobacterial Blooms for Improved Monitoring and Understanding of Lake Ecology

Creator:: Collart, Lindsay P.
Abstract:: Toxin production by cyanobacterial harmful algal blooms (cyanoHABs) in freshwater systems has lasting ecological and human impacts. Nutrients, light availability, hydrology, and microbial community composition impact the frequency and intensity of toxic cyanoHABs. Climate change will exacerbate toxic cyanoHABs, making real time and predictive monitoring a vital tool for managing...
Resource Type:: Dissertation
Full Text:: Understanding of Lake Ecology Abstract approved: ______________________________________________________

Molecular markers from fecal anaerobes to identify nonpoint source pollution in coastal waters

Creator:: Bernhard, Anne E.
Resource Type:: Dissertation
Full Text:: . In addition to the uncertainties regarding phage ecology, there are some problems associated with

Bacterial Predation in Host Microbiomes

Creator:: Welsh, Rory M.
Abstract:: In host-associated microbiomes, the mechanisms that regulate community composition or the principles that govern dynamics remain far from clear. However, understanding how the structure of microbial communities shift as the system moves away from a healthy state is critical to assessing disease progression and to formulate any potential mitigation strategy....
Resource Type:: Dissertation
Full Text:: ecology of microorganisms and host-associated microbiomes. Host-associated microbial community dynamics

Marine bacterioplankton abundances and distributions

Creator:: Morris, Robert M.
Abstract:: Microorganisms play key roles in ocean biogeochemistry. However, several predominant groups of uncultured bacterioplankton thought to contribute to important biogeochemical processes in the oceans are known primarily from gene cloning studies. Although these studies have greatly expanded our view of microbial diversity in the oceans, they are not quantitative and...
Resource Type:: Dissertation
Full Text:: studies described herein provide important information about the ecology of some significant clades of

Microbial diversity, metabolic potential, and transcriptional activity along the inner continental shelf of the Northeast Pacific Ocean

Creator:: Bertagnolli, Anthony D.
Abstract:: Continental shelves located along eastern boundary currents occupy relatively small volumes of the world’s oceans, yet are responsible for a large proportion of global primary production. The Oregon coast is among these ecosystems. Recent analyses of dissolved oxygen at shallow depths in the water column has suggested increasing episodes of...
Resource Type:: Dissertation
Full Text:: global biogeochemistry. Several molecular ecology tools were used to answer questions about the

Impacts of multispecies parasitism on coho salmon (Oncorhynchus kisutch) in Oregon

Creator:: Ferguson, Jayde A.
Abstract:: Diseases caused by parasites are recognized as significant sources of mortality in wild fish populations. I assessed the impacts of multispecies parasitism on a threatened stock of juvenile coho salmon (Oncorhynchus kisutch). A crucial prerequisite to this research was proper identification of parasites, which can be difficult for species lacking...
Resource Type:: Dissertation

Culturing uncultured environmental microorganisms

Creator:: Connon, Stephanie A.
Abstract:: Research on natural environments, over the last decade, is replete with microbial diversity studies that used culture-independent approaches. The cloning and sequencing of the 16S rRNA genes has been the driving force in the expansion of awareness about the great diversity of previously undiscovered microorganisms. Well-known uncultured groups of microorganisms...
Resource Type:: Dissertation
Full Text:: ecology, and in most cases is necessary for the formal systematic description of a new species. For

ScholarsArchive@OSU

Population genetic structure and ecology of Rhizobium leguminosarum

Ecology of a soil population of Rhizobium leguminosarum bv. trifolii

The ecology of parasite interactions within Chinook salmon

Chemical and Genetic Investigations of Toxic Freshwater Cyanobacterial Blooms for Improved Monitoring and Understanding of Lake Ecology

Molecular markers from fecal anaerobes to identify nonpoint source pollution in coastal waters

Bacterial Predation in Host Microbiomes

Marine bacterioplankton abundances and distributions

Microbial diversity, metabolic potential, and transcriptional activity along the inner continental shelf of the Northeast Pacific Ocean

Impacts of multispecies parasitism on coho salmon (Oncorhynchus kisutch) in Oregon

Culturing uncultured environmental microorganisms

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