Index Catalog // ScholarsArchive@OSU

Vernalization requirements and seed dormancy of jointed goatgrass (Aegilops cylindrica)

Creator:: Fandrich, Lynn
Abstract:: Jointed goatgrass (Aegilops cylindrica Host) infestations in winter wheat (Triticum aestivum L.) production regions of the central and western USA result in severe economic losses in the wheat market. Field and greenhouse studies were conducted to determine the vernalization requirements of winter wheat, spring wheat, jointed goatgrass, and wheat by...
Resource Type:: Dissertation
Full Text:: 3.3. Effect of vernalization duration and temperature on the time in growing degree days (GDD) from

Variation in the timing of coho salmon (Oncorhynchus kisutch) migration and spawning relative to river discharge and temperature

Creator:: LovellFord, Rachel M.
Abstract:: Coho salmon (Oncorhynchus kisutch) migration and spawning are unique components of the salmon life cycle because they require synchrony of behavior with other individuals as well as with acceptable fluvial conditions. As with other organisms that exhibit group mating behavior, it is likely that environmental cues trigger coho salmon movement...
Resource Type:: Masters Thesis
Full Text:: temperature and the timing of migration of coho salmon, based on coho salmon counts and discharge and

Trophically transmitted parasites as ecosystem indicators : relationships among parasite community structure, juvenile salmon diet composition, and ocean conditions

Creator:: Losee, James P.
Abstract:: Recent research conducted throughout the Northern California Current (NCC) on the ecology of Pacific salmon (Oncorhynchus spp.) indicates that variable ocean conditions affect the community composition of zooplankton in the nearshore environment which, in turn, can affect the quality of prey for fish, sea birds and mammals. Interannual variability in...
Resource Type:: Masters Thesis
Full Text:: Recent research conducted throughout the Northern California Current (NCC) on the ecology of Pacific

The value of short run in-stream temperature forecasts : an application to salmonids in the Klamath and John Day Rivers

Creator:: Huang, Biao
Abstract:: Water temperature is an important measure of water quality, as well as a dominant factor affecting aquatic life within the stream environment. Elevated water temperatures can decrease the survival rate of fish in each life stage. Cold water species, such as salmonids, are particularly susceptible to elevated water temperatures. For...
Resource Type:: Masters Thesis
Full Text:: which may affect hydropower energy production. Greis (1982) incorporated effects of temperature on

The role of herbivores and productivity on community structure of rocky shores of the Galapagos Islands, Ecuador

Creator:: Vinueza, Luis R.
Abstract:: Ecosystems are facing increasing threats from human related activities, such as overfishing, pollution, habitat destruction, species invasions, and diseases, among others. While oceanic islands provide natural laboratories to understand ecological and evolutionary process, they are also particularly vulnerable to these impacts, given their usual isolation from the mainland and the...
Resource Type:: Dissertation
Full Text:: Experimental design to evaluate the interactive effect of temperature and herbivory on algal biomass and

The Role of Diurnal Light, Temperature, and Forced Egg Retention on Spotted Wing Drosophila, Drosophila suzukii Matsumura (Diptera: Drosophilidae) Survival and Ovipositional Rates

Creator:: York, Riki M.
Abstract:: Drosophila suzukii (Diptera: Drosophilidae) is a devastating pest that attacks thin-skinned stone and small fruit in all major production regions of the United States and worldwide. D. suzukii first appeared in the United States in 2008 and is believed to be native to Southeast Asia. This vinegar fly has a...
Resource Type:: Masters Thesis
Full Text:: analysis Effect of temperature on the number of adult individuals that emerged after heat exposure was

The Responses of Slope-spawning Flatfish to Environmental Variability in the Eastern Bering Sea

Creator:: Vestfals, Cathleen D.
Abstract:: When adult spawning and juvenile settling locations of marine fishes are geographically separated, their early life history stages must rely on transport and their own behavior to move them toward suitable habitats for successful recruitment to the juvenile phase. Variations in climate may reduce the availability of spawning and juvenile...
Resource Type:: Dissertation
Full Text:: approximately 1°C. The effect of temperature was not as prominent along the slope, suggesting that slope

The physiology ecology and run diversity of adult Pacific lamprey, Entosphenus tridentatus, during the freshwater spawning migration

Creator:: Clemens, Benjamin J.
Abstract:: Pacific lamprey, Entosphenus tridentatus, have shown recent and rapid declines in abundance. These anadromous fish return to streams where they mature, spawn and die. It has been inferred that Pacific lamprey enter freshwater and reside for ~ 1 year before spawning. This long exposure to the freshwater environment may affect...
Resource Type:: Dissertation
Full Text:: presented on August 23, 2011 Title: The Physiological Ecology and Run Diversity of Adult Pacific Lamprey

The influence of an elevated incubation temperature on the expression of clubbed down in Coturnix embryos

Creator:: Charbonneau, Jack R.
Abstract:: Hatchability of the fertilized avian egg is impacted by factors which can be categorized as being either genetic or environmental in nature. An elevated incubation temperature, > 100 F reduces development time (time, days to hatch), but increases embryonic mortality and lowers the numbers of fertile eggs that will hatch....
Resource Type:: Masters Thesis
Full Text:: of clubbed down drastically increased. Based on the effect of increasing incubation temperature

The Impact of Temperature on Halyomorpha halys (Hemiptera: Pentatomidae) Life Table Parameters and Feeding Pressure

Creator:: Maslen, Erika A.
Abstract:: Halyomorpha halys (Stål) (Hemiptera: Pentatomidae) is an invasive insect pest that has become established and problematic in the Pacific Northwest. Known colloquially as the brown marmorated stink bug (BMSB), H. halys causes direct damage through feeding activity on a wide range of agronomic and horticultural crops. The objectives of this...
Resource Type:: Masters Thesis
Full Text:: Impact of Temperature on Halyomorpha halys (Hemiptera: Pentatomidae) Life Table Parameters and Feeding

ScholarsArchive@OSU

Vernalization requirements and seed dormancy of jointed goatgrass (Aegilops cylindrica)

Variation in the timing of coho salmon (Oncorhynchus kisutch) migration and spawning relative to river discharge and temperature

Trophically transmitted parasites as ecosystem indicators : relationships among parasite community structure, juvenile salmon diet composition, and ocean conditions

The value of short run in-stream temperature forecasts : an application to salmonids in the Klamath and John Day Rivers

The role of herbivores and productivity on community structure of rocky shores of the Galapagos Islands, Ecuador

The Role of Diurnal Light, Temperature, and Forced Egg Retention on Spotted Wing Drosophila, Drosophila suzukii Matsumura (Diptera: Drosophilidae) Survival and Ovipositional Rates

The Responses of Slope-spawning Flatfish to Environmental Variability in the Eastern Bering Sea

The physiology ecology and run diversity of adult Pacific lamprey, Entosphenus tridentatus, during the freshwater spawning migration

The influence of an elevated incubation temperature on the expression of clubbed down in Coturnix embryos

The Impact of Temperature on Halyomorpha halys (Hemiptera: Pentatomidae) Life Table Parameters and Feeding Pressure

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