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Ecological physiology of the larvel brine fly Ephydra (Hydropyrus) hians, and alkaline-salt lake inhabiting Ephyrid (Diptera)

Creator:: Herbst, David B.
Abstract:: Dipterans of the family Ephydridae (shore and brine flies) are well known for their ability to tolerate and thrive in a wide variety of physically harsh circumstances. The immature stages of one such species of this family, Ephydra hians, are characteristically limited in distribution as benthic inhabitants of highly alkaline...
Resource Type:: Masters Thesis
Full Text:: (Hydropyrus) hians, and alkaline-salt lake inhabiting Ephyrid (Diptera) AN ABSTRACT OF THE THESIS OF David

Phenotypic variation in the sexual attractiveness pheromone of the red-sided garter snake, Thamnophis sirtalis parietalis

Creator:: LeMaster, Michael P.
Abstract:: Pheromones are chemical cues produced by organisms that affect the behavior and/or physiology of conspecifics. The orchestration of reproductive behaviors in many animals depends on the expression of sex pheromones. In insects, intraspecific variation in sex pheromone expression is commonly observed and often influences social interactions between individuals. To what...
Resource Type:: Dissertation
Full Text:: the red-sided garter snake, Thamnophis sirtalis parietalis AN ABSTRACT OF THE THESIS OF Michael P

Sulfonamide sensitivity of Brine shrimp, Artemia salina, Nauplii : an approach to anion transport mechanism

Creator:: Bartel, Lavon L.
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGMENTS I would like to express my sincere appreciation to Dr. Frank P. Conte for his encouragoment

Seasonal thermoregulation in the dark-eyed junco (Passeriformes: Junco hyemalis)

Creator:: Swanson, David Leslie
Abstract:: Winters in north-temperate climates impose high thermogenic demands upon small birds which are met by seasonal acclimatization. This thesis investigates the extent and mechanisms of seasonal acclimatization in darkeyed juncos (Junco hyemalis) inhabiting western Oregon. Although insulation is significantly increased in winter, acclimatization is primarily metabolic. Increased metabolism is required...
Resource Type:: Dissertation
Full Text:: (Passeriformes: Junco hyemalis) AN ABSTRACT OF THE THESIS OF David L. Swanson for the degree of Doctor of

Larval settlement and juvenile group dynamics in the domino damselfish (Dascyllus albisella)

Creator:: Booth, David J. (David John), 1958-
Abstract:: Patterns of settlement of larvae and population dynamics of juveniles are poorly known for coral reef fishes. During 1987 to 1989, I studied these phenomena in the domino damselfish (Dascyllus albisella), a species endemic to the Hawaiian Islands. Larvae settle onto branching coral heads as new recruits (10-15 mm in...
Resource Type:: Dissertation
Full Text:: domino damselfish (Dascyllus albisella) AN ABSTRACT OF THE THESIS OF David J. Booth for the degree of

Dogs, Death, and Dietary Breadth: Insights into the Macroecology and Macroevolution of Canidae

Creator:: Tanis, Brian P.
Abstract:: The size, shape, and stability of a species’ dietary niche can both influence and reflect a variety of biological patterns, including species interactions, extinction risk, and ecosystem function. This is particularly apparent when dietary changes manifest at ecosystem and clade scales to profoundly affect macroecological and macroevolutionary trajectories. However, many...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Brian P. Tanis for the degree of Doctor of Philosophy in Zoology

Behavioral adaptations and the minimization of reproductive costs in the male red-sided garter snake, Thamnophis sirtalis parietalis.

Creator:: O'Donnell, Ryan P.
Abstract:: The benefits of reproduction are clear, but there are also costs. Much is known about the costs of reproduction in females, but only recently have male costs been investigated in any depth. These costs of reproduction may be minimized by appropriately modifying behavior, but there has been little research on...
Resource Type:: Masters Thesis
Full Text:: Ryan P. O’Donnell for the degree of Master of Science in Zoology presented on December 2, 2003

Aquatic community responses to drought disturbance: experimental manipulations of top predator extinctions and stream drying

Creator:: Boersma, Kate S.
Abstract:: Although it is generally assumed that the intensifying abiotic environment is the primary effect of drought on aquatic organisms, drought-induced top predator extinctions may be an important underlying mechanism. I used manipulative experiments to disentangle the impacts of drying and top predator extinctions on arid-land aquatic invertebrate communities. I then...
Resource Type:: Dissertation
Full Text:: predator extinctions and stream drying Abstract approved: David A. Lytle Although it is

Ecological responses to riverine floods and flow alteration

Creator:: McMullen, Laura E.
Abstract:: Floods are major disturbance events for riverine ecosystems, directly and indirectly impacting organisms and their habitat. In this study I investigated the role of riverine floods and flow alteration in regulating aquatic macroinvertebrate population and community structure. I examined this problem using a variety of methods: a meta-analytic review of...
Resource Type:: Dissertation
Full Text:: : . ________________________________________________ David A. Lytle Floods are major disturbance events for riverine ecosystems, directly and

Aquatic insect adaptations to different flow regimes

Creator:: Yamamuro, Asako Melody
Abstract:: My thesis explored the effects of environmental variability on population dynamics and community composition of aquatic insects. Environmental variability in the form of flow regime in streams can limit the distribution and life-history traits of aquatic insects. I used tributaries to the McKenzie River in Oregon with dramatically different flow...
Resource Type:: Dissertation
Full Text:: : David A. Lytle My thesis explored the effects of environmental variability on population dynamics

ScholarsArchive@OSU

Ecological physiology of the larvel brine fly Ephydra (Hydropyrus) hians, and alkaline-salt lake inhabiting Ephyrid (Diptera)

Phenotypic variation in the sexual attractiveness pheromone of the red-sided garter snake, Thamnophis sirtalis parietalis

Sulfonamide sensitivity of Brine shrimp, Artemia salina, Nauplii : an approach to anion transport mechanism

Seasonal thermoregulation in the dark-eyed junco (Passeriformes: Junco hyemalis)

Larval settlement and juvenile group dynamics in the domino damselfish (Dascyllus albisella)

Dogs, Death, and Dietary Breadth: Insights into the Macroecology and Macroevolution of Canidae

Behavioral adaptations and the minimization of reproductive costs in the male red-sided garter snake, Thamnophis sirtalis parietalis.

Aquatic community responses to drought disturbance: experimental manipulations of top predator extinctions and stream drying

Ecological responses to riverine floods and flow alteration

Aquatic insect adaptations to different flow regimes

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