Index Catalog // ScholarsArchive@OSU

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:: DISSERTATION OF Kate S. Boersma for the degree of Doctor of Philosophy in Zoology presented on October 10th

Divergent anti-predator strategies and risk allocation in juveniles of three NorthPacific flatfishes

Creator:: Boersma, Kate S.
Abstract:: Frequent or lengthy predation risk can cause one of two modifications of prey feeding behavior: 1) postponement of feeding to less risky periods, or 2) resumption of feeding behavior despite persistent risk. North Pacific flatfishes exhibit both of these responses when confronted with temporal variation in risk, and this experimental...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Kate S. Boersma for the degree of

The Role of Plant-soil Feedback in the Invasion of Brachypodium sylvaticum in Douglas-fir Forests

Creator:: Esterson, Andrew
Abstract:: Invasive plants have the capacity to transform landscapes and alter ecosystem function, causing significant economic and ecological damage. These effects include displacement and reduction of native flora and fauna, altered fire regimes, modification of biotic and abiotic soil properties, as well as local, regional, and global economic impacts. With such...
Resource Type:: Masters Thesis

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:: , including Asako Yamamuro, Deb Finn, Emily Hartfield, Ivan Phillipsen, Kate Boersma, and Laura McMullen

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:: intellectual stimulation, help in the field and in the lab, and warm friendships. These people include Kate

Effects of pollen collected by honey bees from pollination dependent agricultural cropping systems on honey bee nutrition

Creator:: Topitzhofer, Ellen
Abstract:: Managed honey bee (Apis mellifera L.) colonies are important pollinators of many cultivated crops. Honey bee colony declines averaging 30% annually in the United States for the past 7 years have caused significant concern and hence have been a topic of intensive investigation. These declines are reportedly due to multiple...
Resource Type:: Masters Thesis
Full Text:: , and Kate Boersma for providing statistical support, laboratory protocols, and use of multimedia

Underlying Mechanisms of the Anti-inflammatory and Antioxidant Effects of Quercetin in Human Aortic Endothelial Cells : Implications for Vascular Inflammation and Atherosclerosis

Creator:: Li, Chuan
Abstract:: Atherosclerosis is the underlying cause of ischemic heart disease and stroke and is the leading cause of death worldwide, especially in developed countries. As an inflammatory disease of arteries in a hyperlipidemic milieu, expression of adhesion molecules, such as endothelial-leukocyte adhesion molecule-1 (E-selectin) and intercellular adhesion molecule-1 (ICAM-1), on endothelial...
Resource Type:: Dissertation
Full Text:: progress. I am also deeply grateful to Dr. Jaewoo Choi, Dr. Kate Shay, Dr. Debbie Mustacich for

Neuroanatomical distribution of androgen and estrogen receptors in the brain of the roughskin newt, Taricha granulosa

Creator:: Davis, Glen Andrew
Abstract:: The gonadal steroids, testosterone and estradiol, are known to be important modulators of neuronal functions and behaviors in most vertebrate species. These steroid hormones also elicit changes in neuropeptide synthesis and secretion, alter specific neurohormone receptor levels, and alter neuronal morphology and electrophysiology. Many of the actions of androgens and...
Resource Type:: Masters Thesis
Full Text:: , I'd like to thank KaTe B. Finally, special thanks to my wonderful family; particularly my parents

Growth rates and species composition of juvenile rockfish (Sebastes spp.) in Oregon’s nearshore and estuarine habitats

Creator:: Gallagher, M. Brett
Abstract:: Identification of critical habitat for all life stages of commercially exploited fish populations is critical for effective management. Despite a clear need for basic biological information on juvenile rockfish life history, there have been very few efforts to describe distribution and habitat of this life stage, particularly along the Oregon...
Resource Type:: Masters Thesis
Full Text:: buds (in no particular order): Kate Boersma, Dan Smith, Brock Roberts, Amy Simmons, Abby McCarthy

The Effects of Phytoplankton Prey Species and Nutrient Limitation on Microzooplankton

Creator:: McBeain, Kelsey Ann
Abstract:: Phytoplankton and microzooplankton comprise the base and the first link of the marine food web, respectively. These microbes are key drivers of marine carbon and nutrient cycles. Phytoplankton convert atmospheric CO₂ into organic carbon, and microzooplankton consume phytoplankton, packaging phytoplankton carbon into particulate forms that have a variety of fates:...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

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

Divergent anti-predator strategies and risk allocation in juveniles of three NorthPacific flatfishes

The Role of Plant-soil Feedback in the Invasion of Brachypodium sylvaticum in Douglas-fir Forests

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

Ecological responses to riverine floods and flow alteration

Effects of pollen collected by honey bees from pollination dependent agricultural cropping systems on honey bee nutrition

Underlying Mechanisms of the Anti-inflammatory and Antioxidant Effects of Quercetin in Human Aortic Endothelial Cells : Implications for Vascular Inflammation and Atherosclerosis

Neuroanatomical distribution of androgen and estrogen receptors in the brain of the roughskin newt, Taricha granulosa

Growth rates and species composition of juvenile rockfish (Sebastes spp.) in Oregon’s nearshore and estuarine habitats

The Effects of Phytoplankton Prey Species and Nutrient Limitation on Microzooplankton

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search