Index Catalog // ScholarsArchive@OSU

Quantifying Marine Microplastic Ingestion in Black Rockfish (Sebastes melanops) on the Oregon Coast

Creator:: Laundry, Jordan G.
Abstract:: 1. To determine whether plastics are being ingested by black rockfish at three sites along the Oregon coast 2. To determine if there is a significant difference in rates of plastic ingestion between marine reserve locations and Newport location. 3. To quantify the extent of plastic ingestion and to identify...
Resource Type:: Research Paper
Full Text:: Justification Marine plastic pollution is an area of growing concern for both the scientific community and

Partial purification of endo-1,4-β-D-glucanase I of Trichoderma reesei and use in small-scale enzymatic hydrolysis of cellulose

Creator:: Pautsch, Lindsay
Abstract:: In order to reduce the cost of lignocellulosic ethanol production, a model was previously developed to predict the amount of fermentable sugar released based on parameters concerning both biomass and enzymes. To validate this model, enzymatic hydrolysis must be carried out using individual purified cellulase enzymes. Endo-1,4-β-D-glucanase I (EG I),...
Resource Type:: Undergraduate Thesis
Full Text:: and endoglucanase II by fast protein liquid chromatography. Journal of Chromatography A 808, 153–165

Visual discrimination and memory of Enteroctopus dofleini, the Giant Pacific Octopus

Creator:: Boyle, Virinda R.
Abstract:: This study evaluated the memory and visual discrimination capabilities of Enteroctopus dofleini, the Giant Pacific Octopus. Octopuses have been known to have advance sensory capabilities and through this study we challenged our specimen to remember and actively choose a specific patterned jar based on a visual pattern and positive reinforcement....
Resource Type:: Research Paper
Full Text:: ., Bennet, A., and Montgomery, R.B. 1972. Conditioning of a free operant in Octopus cyaneus Gray. Journal

Comparing Metacarcinus magister settlement preferences among the seagrasses Z. marina and Z. japonica

Creator:: Jaco, Erin M. and Heidmann, Sarah
Abstract:: Metacarcinus magister, the Dungeness crab, is a commercially important species on the Pacific Northwest coast as the most profitable fishery in Oregon and an important ecological player as both predator and prey. Understanding the spatial distribution of Dungeness throughout different life history stages is beneficial both ecologically and economically. Zostera...
Resource Type:: Research Paper
Full Text:: artificial seagrass units and sampling of natural beds. Journal of Experimental Marine Biology and Ecology

Diet manipulations and color changes in Pisaster ochraceus

Creator:: Taylor, Katlyn R.
Abstract:: It has been observed and documented that Pisaster ochraceus has very striking colors, but the reasons behind the coloration are still unknown. Three coloration categories were determined and used for a feeding trial study to investigate the effects of diet on coloration in Pisaster ochraceus. This study involved 30 hand...
Resource Type:: Research Paper
Full Text:: episodic upwelling. Journal of Experimental Marine Biology and Ecology 273: 199-218

Coralline and fleshy algae volume density on epifaunal communities

Creator:: Field, Samuel J. and Gani, Christopher D.
Abstract:: Carbon dioxide emissions greatly affect the carbon chemistry mechanisms within the ocean. Carbon absorbed by the ocean, drops the pH level and creates an environment that is acidic. Acidic conditions prevent calcification mechanisms in coralline algae, and hinder their ability to establish within the intertidal. Coralline algae display structural relevance...
Resource Type:: Research Paper
Full Text:: . Mechanisms linking habitat complexity with diversity. Journal of Experimental Marine Biology and Ecology

Detecting changes in whelk abundance using hermit crab shell utilization in Oregon's rocky marine intertidal

Creator:: Van Orman, Bryan G.
Abstract:: Utilization and preference of whelk shells by the hairy hermit crab are examined in the following to further define the ecology of Oregon’s mid to low intertidal ecosystems. The study was conducted at Tokatee Kloochman State Natural Area (TK) where I made observations before collecting data. My observations were of...
Resource Type:: Research Paper
Full Text:: in marine rocky intertidal habitats. Journal of Experimental Marine Biology and Ecology 250:257-289

Diver observations of community structure on a subarctic marine artificial reef in Whittier, Alaska

Creator:: Levy, Charlotte
Abstract:: Increased coastal development poses a potential threat to nearshore habitats in Alaska, and artificial reefs (AR) are an increasingly popular tool for mitigating habitat loss. Although well studied in tropical and temperate locations, less is known about AR efficacy in high latitude locations. Since ARs are heavily influenced by ecological...
Resource Type:: Poster
Full Text:: , Department of Fisheries and Wildlife, 2Alaska Pacific University DISCUSSION •  Significant increases

Site and Light: Looking at factors that affect the growth rate of Saccharina sessilis

Creator:: Beem, Kristin, Meltvedt, Ariana, and Carsh, Alexander
Abstract:: Saccharina sessilis, lettuce kelp, is a macroalgae that contributes to the primary production in the intertidal zone off of the Oregon Coast. Macroalgae can serve as a bioindicator of increased nutrient input, water quality, and shifts in the intertidal environment. Competition for light exists between macroalgae species and with other...
Resource Type:: Research Paper and Presentation

Diurnal variations in the corrosiveness and acidification of porewater and its effects on populationdynamics of marine bivalves

Creator:: Miller, Cale A.
Abstract:: The undergradtuate research project was the completion, manipulation and assessment of a population model. The stage based population model assessed the late larval and juveniles stages of the hard shell clam Mercenaria mercenaria. There were seven class sizes input into the model starting with pediveligers and ending with juveniles at...
Resource Type:: Poster and Presentation

ScholarsArchive@OSU

Quantifying Marine Microplastic Ingestion in Black Rockfish (Sebastes melanops) on the Oregon Coast

Partial purification of endo-1,4-β-D-glucanase I of Trichoderma reesei and use in small-scale enzymatic hydrolysis of cellulose

Visual discrimination and memory of Enteroctopus dofleini, the Giant Pacific Octopus

Comparing Metacarcinus magister settlement preferences among the seagrasses Z. marina and Z. japonica

Diet manipulations and color changes in Pisaster ochraceus

Coralline and fleshy algae volume density on epifaunal communities

Detecting changes in whelk abundance using hermit crab shell utilization in Oregon's rocky marine intertidal

Diver observations of community structure on a subarctic marine artificial reef in Whittier, Alaska

Site and Light: Looking at factors that affect the growth rate of Saccharina sessilis

Diurnal variations in the corrosiveness and acidification of porewater and its effects on populationdynamics of marine bivalves

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