Index Catalog // ScholarsArchive@OSU

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:: , Columbus Zoo, Zoology Research Fund OSU, Bayley Fellowship from Oregon State University, and Teaching and

An Osteo-archaeological Investigation of Pinniped Remains at Seal Rock, Oregon (35 LNC 14)

Creator:: Snyder, Sandra L.
Abstract:: Analysis of the pinniped remains from site 35 LNC 14 reveal the presence of four species: Eumetopias jubata (Stellar sea lion), Zalophus californianus (California sea lion), Callorhinus ursinus (Northern fur seal),'and Phoca vitulina (Harbor seal). Ratios based on minimum number of individuals calculations disclose a high incidence of mature Stellar...
Resource Type:: Masters Thesis
Full Text:: ; Oregon coastal storms wearing down the face of the sand bluff have caused the erosion and subsequent

Abiotic and biotic predictors of coastal giant salamander (Dicamptodon tenebrosus) in headwaters of the Oregon Coast Range

Creator:: Neal, Nathaniel G.
Abstract:: From British Columbia to northern California, coastal giant salamanders (Dicamptodon tenebrosus) are a dominant vertebrate predator in headwater streams. Though widespread, salamander health and abundance levels differ greatly between locations, provoking the question as to what factors may influence this variation and whether habitat features or biotic variables play a...
Resource Type:: Honors College Thesis
Full Text:: Abiotic and biotic predictors of coastal giant salamander (Dicamptodon tenebrosus) in headwaters of the

Oceanographic influences on rocky intertidal communities : coastal upwelling, invertebrate growth rates, and keystone predation

Creator:: Sanford, Eric (Eric David)
Abstract:: The influence of large-scale processes on natural communities has become one of the central issues of modern ecology. I combined field and laboratory studies to investigate the effects of variation in coastal upwelling on rocky intertidal communities along the central Oregon coast. I examined whether the growth of intertidal barnacles...
Resource Type:: Dissertation
Full Text:: Influences on Rocky Intertidal Communities: Coastal Upwelling, Invertebrate Growth Rates, and Keystone

The role of oxygen and other environmental variables on survivorship, abundance, and community structure of invertebrate meroplankton of Oregon nearshore coastal waters

Creator:: Eerkes-Medrano, Dafne I.
Abstract:: The high productivity of Eastern Boundary Upwelling Ecosystems (EBUE), some of the most productive ecosystems in the globe, is attributed to the nutrient rich waters brought up through upwelling. Climate change scenarios for coastal upwelling systems, predict an intensification of coastal upwelling winds. Associated with intensification in upwelling are biogeochemical...
Resource Type:: Dissertation
Full Text:: pelagic communities, and open coastal habitats. Hypoxia thresholds are species specific; thus predicting

Informal Education on an Estuary Nature Trail : A Study of Visitor Knowledge, Attitudes and Behavior

Creator:: Osterman-Sussman, Irene
Abstract:: The Mark 0. Hatfield Marine Science Center (HMSC) public education opportunities include interpretive programs offered along the Estuary Nature Trail. The purpose of this study was to determine the effectiveness of three informal education programs, interpretive signs, a self-guided trail brochure, and guided naturalist walks, in imparting information on the...
Resource Type:: Masters Thesis
Full Text:: degree of Master of Arts in Interdisciplinary Studies in the co-departments of Fisheries and Wildlife

Aboriginal fishing at Seal Rock (35-LC-14) and Neptune (35-LA-3) : late-prehistoric archaeological sites on the central Oregon coast

Creator:: Zontek, Terry
Abstract:: A sample of fish remains from two late-prehistoric archaeological sites on the central coast of Oregon were analyzed to partially evaluate two models of aboriginal subsistence-settlement systems. One model is based upon ethnograhpic data, primarily Drucker's (1939), for Yakonen speakers collected in the late 19th and early 20th centuries. The...
Resource Type:: Masters Thesis
Full Text:: small streams. Except for the Umpqua River, coastal streams and rivers originate within the Coast

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:: experimental flood program in an arid-land river, and a field investigation of flood recovery behaviors in a

Phytoplankton shading of marine benthic macrophytes: Implications for intertidal community structure

Creator:: Kavanaugh, Maria T.
Abstract:: Previous observations of light levels and phytoplankton abundances along the Oregon coast demonstrated that phytoplankton attenuated light sufficiently to potentially limit the growth of intertidal macrophytes and therefore structure local intertidal communities. Inspired by this observation, in spring 2004, I initiated a study to quantify the direct and indirect benthic...
Resource Type:: Masters Thesis
Full Text:: the coastal environment, modeling efforts that looked at changes in both pelagic and benthic

A biological and taxonomic study of selected myxosporida of some Oregon fresh-water fishes

Creator:: Wyatt, Ellis Junior
Abstract:: Biological studies were conducted on a histozoic myxosporidan Myxobolus insidiosus (Wyatt and Pratt, 1963) from the musculature of Oncorhynchus tshawytscha (Walbaum). This organism is known to occur in spring chinook salmon in Oregon and coho salmon O. kisutch (Walbaum) in Washington. In addition Myxobolus kisutchi (Yasutake and Wood, 1957) was...
Resource Type:: Dissertation
Full Text:: , Oregon, which are used by Oregon State University, Department of Fisheries and Wildlife, for studies on

ScholarsArchive@OSU

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

An Osteo-archaeological Investigation of Pinniped Remains at Seal Rock, Oregon (35 LNC 14)

Abiotic and biotic predictors of coastal giant salamander (Dicamptodon tenebrosus) in headwaters of the Oregon Coast Range

Oceanographic influences on rocky intertidal communities : coastal upwelling, invertebrate growth rates, and keystone predation

The role of oxygen and other environmental variables on survivorship, abundance, and community structure of invertebrate meroplankton of Oregon nearshore coastal waters

Informal Education on an Estuary Nature Trail : A Study of Visitor Knowledge, Attitudes and Behavior

Aboriginal fishing at Seal Rock (35-LC-14) and Neptune (35-LA-3) : late-prehistoric archaeological sites on the central Oregon coast

Ecological responses to riverine floods and flow alteration

Phytoplankton shading of marine benthic macrophytes: Implications for intertidal community structure

A biological and taxonomic study of selected myxosporida of some Oregon fresh-water fishes

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