Intern Home Institution Major(s) Project Mentor
AnnaRose Adams Oregon State University, Corvallis, Oregon Bioresource Research/ CSS

Title: Influence of Anthropogenic Aerosols on Marine Stratocumulus in the Southeast Pacific

Summary: Current understanding of aerosol interactions with marine stratocumulus in the Southeast Pacific (SEP) is limited. To address this issue, I'm studying the impact of polluted aerosols on stratocumulus microphysical properties in this region. I will be interpreting aerosol and microphysical cloud data collected from VAMOS-Ocean-Cloud-Atmosphere Land Systems 2008 research flights using AEROS and IGOR Pro software. The resulting time-series and size distribution graphs will provide insight into the distribution of polluted aerosol particles in the SEP, as well as their correlation to patterns in stratocumuli microphysical and radiative properties. These results will contribute towards evaluating the role of anthropogenic aerosol and marine stratocumulus interactions on global climate change.

Cindy Twohy, Professor, OSU
Emily Batt Northeastern University Physics

Title: Observations on the structure of shoaling nonlinear waves in Massachusetts Bay

Summary: Nonlinear internal waves are a ubiquitous feature of Massachusetts Bay in the summer. This summer I will be studying the unknown behavior of shoaling internal waves in this area as the amplitude of the disturbance approaches the water depth. Understanding this circumstance will help interpret the role of internal bores and active turbulence in energy and mass transport and by shoaling internal waves. I will be aboard a ten-day research cruise with an echo sounder used to record subsurface acoustic backscatter data that will be used to produce images of the internal waves. Visual analysis of these images can detect signatures of bores and turbulence to determine how the waves react to rapidly shoaling topography.

Jim Lerczak, Professor, OSU
Hilary Browning Eckerd College, St. Petersburg, Florida Biology

Title: Isotopic analysis of Chinook salmon (Oncorhynchus tshawytscha) otoliths to determine oceanic migration patterns

Summary: Future Chinook salmon management practices hinge upon a better understanding of oceanic salmon migration patterns and river population dynamics. The objective of my summer research is to study whether or not oxygen isotope ratios are stock-specific, and if they are, to begin making some inferences about migratory paths based on the relationship between stocks and isotope ratios. I will be collecting oxygen isotopic ratios from the otoliths (ear stones) of Chinook from different natal streams to determine if the fish experienced different conditions, and thus moved in different water masses.

Jessica Miller, Fisheries & Wildlife and Jennifer McKay, , CEOAS
Xerónimo Castaneda California State University, Monterey Bay, Seaside, California Earth Science Technology & Policy

Title: Use of Lipofusicn to determine age structure of a threatened mud shrimp population, Upogebia pugettensis, in Yaquina Bay, Oregon

Summary: Mud shrimp (Upogebia pugettensis) was once an abundant crustacean in many estuaries and play an important role in determining community composition and structure of benthic estuarine habitats along the Pacific coast. The rapid loss and local extinction of U. pugettensis populations in the past decade has prompted studies to learn more about their life-history. This summer I will be studying the growth and age structure of U. pugettensis, via detection of the neural pigment lipofuscin, to determine age and growth and therefore assess population dynamics of these shrimp.

John Chapman, Fisheries & Wildlife; Brett Dumbauld, USDA-Agriculture Research Service
Sarah Dewey Yale University, New Haven, CT Geology and Geophysics
Title: Satellite Observations of Oregon Coastal Upwelling
Research Su

Title: Satellite Observations of Oregon Coastal Upwelling

Summary: A holistic understanding of upwelling along the Oregon Coast requires many methods for data collection, remote or otherwise. The objective of this study is to optimally combine altimeter data with in-situ measurements in order to fully describe seasonal coastal upwelling. Altimeter data are widely available, and AUVs (gliders) are a prime source of in-situ information on the coastal water column. Using altimeter data to calculate expected fluid flow, I will compare this information to the properties of the water off the coast of Newport in 2008 as measured by the gliders. In addition to these data, remotely-sensed AVHRR temperature values are available, as is coastal meteorological buoy data detailing water properties. Together these data should show an overturn of the water on the coast, with an intrusion of cold, salty water as the summer goes on.

Ted Strub, Professor, College of Oceanic and Atmospheric Sciences
Patrick Donovan Western Michigan University, Kalamazoo, MI Geochemistry/ Environmental Studies

Title: The Bioavailability and Transport of Bottom Boundary Layer Iron in the Oregon Coastal Upwelling System

Summary: This summer I will be investigating the transport of Bottom Boundary Layer (BBL) iron (Fe) during upwelling and relaxation events to determine bioavailability and delivery of iron to surface water. The bioavailability of Fe, and therefore the productivity of the Oregon upwelling system results in a potential for carbon dioxide sequestration in the system. During a recent SUCCES cruise on the R/V Wecoma, we completed incubation experiments along with the observation and sampling of a natural phytoplankton bloom. These incubation experiments will allow us to study the bioavailability and form of the BBL Fe in surface water, in the BBL, and the natural bloom will allow for comparison with the incubated samples.

Zanna Chase, Professor, College of Oceanic and Atmospheric Sciences
Natalie Ehrlich Portland Community College, Portland, Oregon Biology

Title: The Effects of Low Dissolved Oxygen (DO) on Juvenile Flatfish Escape Behavior

Summary: Nearshore hypoxia along Oregon’s central coast is a recent phenomenon that may be having a large impact on the economically and ecologically important flatfish communities in the area. Because little research has been conducted on non-anthropogenic nearshore hypoxia, it remains unanswered how low levels of dissolved oxygen (DO) are affecting juvenile flatfish behavior, particularly escape behavior from predators. This summer I will be analyzing in situ video footage of juvenile flatfish escape behavior captured during sampling cruises in 2008 for escape behavior changes. The analysis of this video footage will provide insight into how juvenile flatfish react within varying DO levels and will aid in addressing the broader scope of how hypoxia is affecting the early life stage fish communities in Oregon’s waters.

Lorenzo Ciannelli, Professor, College of Oceanic and Atmospheric Sciences
Kendra Hoekzema Calvin College, Grand Rapids, MI

Biology

Biochemistry

Title: mtDNA identity of stranded New Zealand sperm whales in relationship to global diversity

Summary: This summer I will be comparing the mtDNA control region (D-loop) haplotypes of of sperm whales from New Zealand with samples collected during the Voyage of the Odyssey. The sperm whale samples are from mass strandings and individual beach cast incidents in New Zealand. By quantifying their genetic diversity, this study will provide valuable genetic information about males and colder water populations of sperm whales. I will be comparing the mtDNA control region haplotypes between regions, using a variety of methods (Fst, graphical modeling, genealogical sorting indices), whcich will show how much genetic interchange there is between the New Zealand population and other populations of sperm whales. In addition, I will also be determining the sex of the New Zealand samples, validating field observations where sex was determined, and providing the gender of a sample when the sex was not determined in the field.

Scott Baker, Associate Professor, Fisheries & Wildlife
Alexis Hoffman Washington University, St. Louis, MO

Physics

Earth & Planetary Science

Title: The effect of geothermal heating on the stability of the glacial ocean circulation

Summary: Geothermal heat flux is often disregarded in oceanic global circulation models because surface forcings (i.e. winds and solar heating) are at least three orders of magnitude larger than the output of heat from the ocean floor. This summer I will be investigating whether or not heat flux from the ocean floor has an affect on the stability of ocean circulation during the Last Glacial Maximum utilizing Univeristy of Victoria (Uvic) Earth System Climate Model to determine the changes in (if any) and effects on ocean circulation.

Andreas Schmittner, Assistant Professor, CEOAS
Kate Lavelle SUNY, Stony Brook, NY Marine Sciences

Title: Thermal tolerance and the effect of temperature on morphological plasticity of Pacific cod, Gadus macrocephalus

Summary: Pacific cod, Gadus macrocephalus, are a commercially important species in the Bering Sea and northern Pacific Ocean. They also play a crucial role in the marine food web during all of their life stages. As adults, Pacific cod are benthic, but as juveniles they reside in nearshore vegetated areas and their eggs are demersal. This summer, I am determining the maximum thermal tolerance in larval Pacific cod reared at controlled temperatures. Vertebral counts made from three cohorts of juvenile Pacific cod will allow us to conclude if the morphological trait of vertebral number is indeed plastic in this species and if it can be influenced by thermal history. These data will also show if Pacific cod is a species consistent with Jordan’s rule. The results of these physiological and morphological experiments could be used in models predicting annual recruitment and early life history effects. Results may also show that annual temperature fluctuations can create variable reaction norms on short time scales.

Tom Hurst, Research Fishery Biologist, NOAA - Alaska Fisheries Science Center
Joni Lum CUNY-Hunter College, NY, NY Physics

Title: Using Optical Polarimetry to Measure Wave Height

Summary: Optical sampling of the nearshore region has been used with great success to gain valuable understanding of the morphodynamics of the nearshore system. Information from images have revealed a lot about the region such as depth, current and sandbar formation, but so far scientists have been unable to optically measure the actual height of waves. Developing a tool that will allow the measurement of waves through optical means will make data collection easier and more effective, bettering our understanding of how beaches shift and change, and ultimately, make coastal areas safer for people and better for the environment. Using a polarization camera, and data processing tools such as MATLAB, we hope to successfully measure wave height through optical means. Optically estimating wave height will help us understand the dynamics of the nearshore environment.

Rob Holman, Professor, College of Oceanic and Atmospheric Sciences
Erica Pitcavage Whitman College - Walla Walla, WA Geology

Title: Miocene-Pliocene Volcanism in Turkey Related to Arabia-Eurasia Collision

Summary: The igneous deposits of the Cappadocia region of central Turkey, produced by volcanism in the late Miocene and Pliocene, have been studied previously, but uncertainty of the ages and stratigraphy of the ignimbrites and lava flows remains. Determining ages of nine igneous samples through 40Ar/39Ar noble gas spectrometry will provide valuable information on the volcanic history of the Central Anatolian Volcanic Province. A better understanding of this regional volcanism will give us more insight into the frequency and duration of eruptions due to the tectonic collision of Eurasia and Arabia. Precise ages will also give us more information about the chronology of the mammalian fossil record that is available in interbedded sedimentary layers.

Bob Duncan, Associate Dean, College of Oceanic and Atmospheric Sciences
Brandon Reichl Kutztown University - Kutztown, Pennsylvania

Marine Science

Physics

Title: Comparing Vertical Mixing and Upward Nutricline Movement as Driving Forces Behind Biological Productivity

Summary: This summer I'm studying the driving force behind biological variability in the oceans. On the equator at 140˚ W, there seems to be a combination of upward movement of the nutricline and vertical turbulent mixing of nutrients. In order to help determine how these processes work we will take data from CTD casts, satellites, and moorings. Using this data we will create depth profiles so we can compare physical (salinity, temperature, density), chemical (nutrient levels, CO2), and biological values (chlorophyll, POC) in the area. A method must be developed to differentiate between the two processes in order to properly determine which process more directly impacts productivity. This will be achieved by calculating the correlation between the time series of thermocline/nutricline depth, vertical turbulent mixing and surface biological and nutrient data.

Pete Strutton, Associate Professor, College of Oceanic and Atmospheric Sciences
Jasmin Segura Humboldt State University - Arcata, CA Botany

Title: Temporal and Spatial Variations in Species Composition and Toxicity of Pseudo-nitzschia Blooms off the Central Oregon Coast

Summary: While creating a seasonal database of temporal and spatial variations in abundances of Pseudo-nitzschia species and DA toxicity across the continental shelf off central Oregon, I am studying the relationships between DA toxicity of captured blooms and environmental variables to changes in the Pacific Decadal Oscillation and the Multivariate ENSO Index. I will also spend the summer identifying correlations between water column stratification and (a) the occurrence of toxic Pseudo-nitzschia species in the samples (b) the relationship between DA toxicity and key nutrients and (c) the timing of razor clam harvest closures at the coast. Finally, using ratios of dissolved to particulate DA, we will test the hypothesis that offshore blooms originating inshore of the coastal upwelling front do not become toxic until transported to nutrient poor offshore waters.

Bill Peterson, NOAA - Northwest Fisheries Science Center; Linda O'Higgins, Research Associate; CIMRS
Amanda Stewart University of Oregon - Eugene, Oregon Environmental Science

Title: The Limiting Factors Affecting the Reproductive Success of Common Murres, Uria Aalge, at the Yaquina Head Lighthouse Colony

Summary: What are the limiting factors that influence chick and egg reproductive success within the Common Murre colony of Yaquina Head? This summer I will be studying the influence of ocean conditions, parents’ foraging capabilities, predation factors, and location of egg sites on reproductive success of common murre’s. I will focus primarily on location of eggs and chicks within the colony and the number of mortalities associated with these areas, especially related to predation, parents’ ability to deliver food to the chick, and time of fledging. I will be monitoring 12 sample areas of the study within the colony for events that can limit or enhance the success of murre eggs and chicks. Specifically I will be monitoring for predation events, food provisioning, using murre parent time budgets, and whether inner colony or edge-of-colony eggs hatch first.

Rob Suryan, Assistant Professor (Sr Res), OSU/Hatfield Marine Science Center
Maryann Tekverk Haverford College - Haverford, PA Geology

Title: Flood Deposition on the Eel Margin, California: Evidence From X-Radiography and Radioisotopes

Summary: During the winter, small mountainous rivers on the Pacific Northwest coast flood episodically, delivering substantial amounts of sediment and particulate organic carbon (POC) to the coastal ocean, depositing flood layers. Sediment cores from the Eel margin were collected during a two-week cruise aboard the RV Wecoma in order to understand the processes involved in oceanic flood deposition, and how these processes influence POC burial. Specifically, a 2.38 meter kasten core was collected at site O450 (40° 51.390’ N 124° 28.889’ W, 458 meters depth) and analyzed using x-radiography, revealing bedding within the core. X-radiography revealed non-steady-state deposition throughout the core. Core O450 was analyzed with gamma detection. The Pb-210 decay profile forms a sinusoidal series of peaks and valleys. Surface activity of excess Pb-210 is 25.0 dpm/g. The background sedimentation rate calculated from log-linear regions of the Pb-210 profile is 0.12-0.13 cm/year. Average sedimentation rate at O450 is 0.9 cm/year from the Pb-210 profile and 1.45 cm/year from the Cs-137 profile. Analysis suggests that deposition at O450 is characterized by periods of steady hemi-pelagic deposition punctuated by rapid deposition events. Sedimentation rates are in agreement with a study of O450 done in 1995 by Alexander and Simoneau. It is unclear whether rapid deposition events observed at O450 are the result of turbidity flows or hyperpycnal flows. Future work will include organic and inorganic carbon fraction analysis as well as grain size analysis, which will allow determination of the transport mechanisms depositing sediment at O450.

Rob Wheatcroft, Professor, College of Oceanic and Atmospheric Sciences
Ashley Van Brink Elmira College - Elmira, NY

Biology

Chemistry

Title: An In Vitro Study of Immune Response in Chinook Salmon

Summary: A wide variety of chemicals are found to pollute the ocean and rivers of the Pacific Northwest United States. Their affect on the wildlife present in these aquatic environments varies with the organisms and concentrations. But, it is not always easy to know which contaminant is widely benign and which allow for detrimental affects to the organisms. This summer, using molecular techniques (cell culturing, gene expression, PCR) I will be examining the immune function of the Chinook salmon (Oncorhynchus tshawytscha) in the study of health in the presence of different environmental contaminants. Specifically, I will be isolating and culturing Immune cells from the head kidney to evaluate the effects of the presence of a contaminant on the immune function of the cells.

Mary Arkoosh, NOAA – Northwest Fisheries Science Center; Linda O'Higgins, CIMRS
Robin Van Dyke College of the Atlantic - Bar Harbor, ME Human Ecology

Title: Parasites of Eastern Banded Killifish (Fundulus diaphanus diaphanus) in the Columbia River

Summary: This summer I will be collecting and identifying an inventory of the parasites found in a sample of 40-50 banded killifish (Fundulus diaphanus diaphanus) taken from the Columbia River. I will also be collecting data on the parasites of threespine stickleback (Gasterosteus aculteatus) and, if time allows, juvenile Chinook salmon (Onchorhynchus tshawytscha) collected at the same time and site and comparing it to the killifish data.

Kym Jacobson, Biologist; NOAA – Northwest Fisheries Science Center
Camilo Vanegas University of Maryland, College Park, MD Microbiology

Title: Identification of Larval Sebastes Samples for Stock Assessment

Summary: This summer I am developing a molecular genetic technique using mitochondrial DNA to genetically identify to the species level unidentified juvenile rockfish (Sebastes spp.) collected during the 2008 Stock Assessment Improvement Project (SAIP) cruises.

Michael Banks, Cooperative Institute for Marine Resources Studies; Ric Brodeur, NOAA/NW/NMFS
Kevin Wakeman Humboldt State University - Arcata, OR

Marine Biology

German

Title: Upper Intertidal Habitat Use by Juvenile Dungeness Crabs (Cancer magister) in the Yaquina Estuary.

Summary: This summer I am studying the use of Zostera japonica habitat by juvenile Dungeness crabs compared to bare substrate and areas dominated by the ghost shrimp, Neotrypaea californiensis. I'm conducting a lot of field work mapping out upper intertidal habitats and comparing juvenile Dungeness crab samples from these three habitat types to understand relative abundance related to each habitat type.

Ted Dewitt, Ecologist, US EPA-Pacific Coastal Ecology
Emily Whitney Whitworth University - Spokane, WA Biology

Title: Long term trends in sea surface temperatures in the Northeast Pacific

Summary: This summer I will be studying crossdated geoduck chronology from Barkley Sound, British Columbia using conventional methods, comparing the chronology with unconventional chronologies from Barkley Sound and Tree Nob Islands, BC and examining any trends that are excluded from the conventional chronology. This comparison will be used to address the question of whether the 1977 warming trend represents a unique upswing or a part of the natural variance caused by PDO.

Bryan Black, OSU/Hatfield Marine Science Center