Index Catalog // ScholarsArchive@OSU

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

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

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

Hidden dynamics : community ecology and costs of parasite infection in African buffalo (Syncerus caffer)

Creator:: Henrichs, Brian
Abstract:: Most wild animals are concurrently infected with multiple parasite species for most of their lives. These parasite species assemble into rich and diverse communities, with parasites using host tissues for growth and reproduction as well as evolving strategies to evade the host immune system. The net effect of these ecological...
Resource Type:: Masters Thesis
Full Text:: the department. Thanks to Kojun Kanda, Angela Poole, Paul Bradley, Kate Boersma, Kaitlin Bonner and

Giant otters (Pteronura brasiliensis) and humans in the lower Yasuní Basin, Ecuador : spacio-temporal activity patterns and their relevance for conservation

Creator:: Carrera-Ubidia, Paola M.
Abstract:: Giant otters (Pteronura brasiliensis) and humans in the Lower Yasuní Basin (Ecuador) have similar food and space requirements: they consume comparable arrays of fish species, and they use similar aquatic and terrestrial habitats. Resource partitioning could facilitate coexistence by allowing each species exclusive access to some resources. My research examines...
Resource Type:: Masters Thesis
Full Text:: , Marisa Litz, Craig Tinus, Josie Thompson, Kate Boersma, Jeremiah Osborne-Gowey, and Jed Moore, for

Children's conceptions of nature as influenced by a residential environmental education program

Creator:: Rebar, Bryan M.
Abstract:: The majority of research in environmental education (EE) has focused on measuring knowledge, attitudes, and behavior using quantitative tools and methods. Few studies have attempted to elicit and characterize children's conceptions of the environment or nature, particularly those resulting from a residential EE experience, which contextualize knowledge, attitudes, and may...
Resource Type:: Masters Thesis
Full Text:: initiating contact, and Brad Barker and Kate Boersma for welcoming and orienting me to the OMSI Outdoor

ScholarsArchive@OSU

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

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

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

Hidden dynamics : community ecology and costs of parasite infection in African buffalo (Syncerus caffer)

Giant otters (Pteronura brasiliensis) and humans in the lower Yasuní Basin, Ecuador : spacio-temporal activity patterns and their relevance for conservation

Children's conceptions of nature as influenced by a residential environmental education program

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