Index Catalog // ScholarsArchive@OSU

Estuarine Dissolved Oxygen History Inferred from Sedimentary Trace Metal and Organic Matter Preservation

Creator:: Johnson, Geoffrey M., Sutherland, David A., Roering, Josh J., Mathabane, Nathan, and Gavin, Daniel G.
Abstract:: Environmental history recorded in estuarine sediment describes water quality regimes through the use of geochemical and biological proxies. We collected sediment cores from two locations in the Coos Estuary, Oregon, at South Slough and Haynes Inlet, spanning from ~ 1680 AD to the present. To reconstruct the historical water column oxygen...
Resource Type:: Article

High resolution lake sediment record reveals self-organized criticality in erosion processes regulated by internal feedbacks

Creator:: Colombaroli, D., Gavin, D. G., Morey, A. E., and Thorndycraft, V. R.
Abstract:: Reconstruction of high-frequency erosion variability beyond the instrumental record requires well-dated, high-resolution proxies from sediment archives. We used computed tomography (CT) scans of finely laminated silt layers from a lake-sediment record in southwest Oregon to quantify the magnitude of natural landscape erosion events over the last 2000years in order to...
Resource Type:: Article
Full Text:: stability and therefore post-fire erosion events (Colombaroli and Gavin 2010). 97 Additionally, the

Are great Cascadia earthquakes recorded in the sedimentary records from small forearc lakes?

Creator:: Morey, A. E., Goldfinger, C., Briles, C. E., Gavin, D. G., Colombaroli, D., and Kusler, J. E.
Abstract:: Here we investigate sedimentary records from four small inland lakes located in the southern Cascadia forearc region for evidence of earthquakes. Three of these lakes are in the Klamath Mountains near the Oregon–California border, and one is in the central Oregon Coast range. The sedimentary sequences recovered from these lakes...
Resource Type:: Article
Full Text:: erosion after land clearance and road building (Colombaroli and Gavin, 2010). There are no definitive

Nrf2 status affects tumor growth, HDAC3 gene promoter associations, and the response to sulforaphane in the colon

Creator:: Rajendran, Praveen, Dashwood, Wan-Mohaiza, Li, Li, Kang, Yuki, Kim, Eunah, Johnson, Gavin, Fischer, Kay A., Löhr, Christiane V., Williams, David E., Ho, Emily, Yamamoto, Masayuki, Lieberman, David A., and Dashwood, Roderick H.
Abstract:: Background: The dietary agent sulforaphane (SFN) has been reported to induce nuclear factor erythroid 2 (NF-E2)-related factor 2 (Nrf2)-dependent pathways as well as inhibiting histone deacetylase (HDAC) activity. The current investigation sought to examine the relationships between Nrf2 status and HDAC expression in preclinical and translational studies. Results: Wild type...
Resource Type:: Article

Development of the Global Earthquake Model's neotectonic fault database

Creator:: Christophersen, Annemarie, Litchfield, Nicola, Berryman, Kelvin, Yeats, Robert, Thomas, Richard, Basili, Roberto, Wallace, Laura, Ries, William, Hayes, Gavin P., Haller, Kathleen M., Yoshioka, Toshikazu, Koehler, Richard D., Clark, Dan, Wolfson-Schwehr, Monica, Boettcher, Margaret S., Villamor, Pilar, Horspool, Nick, Ornthammarath, Teraphan, Zuniga, Ramon, Langridge, Robert M., Stirling, Mark W., Goded, Tatiana, Costa, Carlos, and Yeats, Robert
Abstract:: The Global Earthquake Model (GEM) aims to develop uniform, openly available, standards, datasets and tools for worldwide seismic risk assessment through global collaboration, transparent communication and adapting state-of-the-art science. GEM Faulted Earth (GFE) is one of GEM’s global hazard module projects. This paper describes GFE’s development of a modern neotectonic...
Resource Type:: Article
Full Text:: • Richard Thomas1 • Roberto Basili2 • Laura Wallace3 • William Ries1 • Gavin P. Hayes4 • Kathleen M

The Influence of fire on the Radiocarbon Signature and Character of Soil Organic Matter in the Siskiyou National Forest, Oregon, USA

Creator:: Heckman, Katherine, Campbell, John, Powers, Heath, Law, Beverly, and Swanston, Chris
Abstract:: Forest fires contribute a significant amount of CO₂ to the atmosphere each year, and CO₂ emissions from fires are likely to increase under projected conditions of global climate change. In addition to volatilizing aboveground biomass and litter layers, forest fires have a profound effect on belowground carbon (C) pools and...
Resource Type:: Article
Full Text:: (nitrogen) stocks following fire, while other studies find the opposite (Johnson and Curtis 2001, Wan et

Effects of the Positive Action Program on Indicators of Positive Youth Development Among Urban Youth

Creator:: Lewis, Kendra M., Vuchinich, Samuel, Ji, Peter, DuBois, David L., Acock, Alan, Bavarian, Niloofar, Day, Joseph, Silverthorn, Naida, and Flay, Brian R.
Abstract:: This study evaluated effects of Positive Action, a school-based social-emotional and character development (SECD) intervention, on indicators of positive youth development (PYD) among a sample of low-income, ethnic minority youth attending 14 urban schools. The study used a matched-pair, cluster-randomized controlled design at the school level. A multiple-measure self-report protocol...
Resource Type:: Article
Full Text:: 5 taking (Gavin, Catalano, David-Ferdon, Gloppen, & Markham, 2010; Schwartz et al., 2010

Spatially limited mud turbidites on the Cascadia margin: segmented earthquake ruptures?

Creator:: Goldfinger, C., Morey, A. E., Black, B., Beeson, J., Nelson, C. H., and Patton, J.
Abstract:: Abstract: A series of 23 thin, mostly mud-silt turbidites are found interspersed between larger, well-dated and regionally correlated paleoseismic sandy turbidites that extend along most of the Cascadia margin, northwestern United States. Investigation of the structure, distribution, and sedimentology of these thin mud-silt units supports the interpretation of these units...
Resource Type:: Article
Full Text:: a composite thrust ridge formed from seaward and landward vergent thrust faults (Johnson, 2004

Utilizing Fishermen Knowledge and Expertise: Keys to Success for Collaborative Fisheries Research

Creator:: Yochum, Noelle, Starr, Richard M., and Wendt, Dean E.
Abstract:: Collaborative fisheries research provides a mechanism for integrating the unique knowledge, experience, and skills of fishermen and scientists. It is a joint intellectual endeavor that begins with the inception of a project and continues until its final stages, with each group having mutual investment in-and ownership of-the project. Collaborative fisheries...
Resource Type:: Article
Full Text:: Sylvia 2000; Johnson and van Densen 2007; Hart et al. 2008), increased sampling frequency, the ability

Does wildfire likelihood increase following insect outbreaks in conifer forests?

Creator:: Meigs, Garrett W., Campbell, John L., Zald, Harold S. J., Bailey, John D., Shaw, David C., and Kennedy, Robert E.
Abstract:: Although there is acute concern that insect-caused tree mortality increases the likelihood or severity of subsequent wildfire, previous studies have been mixed, with findings typically based on stand-scale simulations or individual events. This study investigates landscape- and regional-scale wildfire likelihood following outbreaks of the two most prevalent native insect pests...
Resource Type:: Article

ScholarsArchive@OSU

Estuarine Dissolved Oxygen History Inferred from Sedimentary Trace Metal and Organic Matter Preservation

High resolution lake sediment record reveals self-organized criticality in erosion processes regulated by internal feedbacks

Are great Cascadia earthquakes recorded in the sedimentary records from small forearc lakes?

Nrf2 status affects tumor growth, HDAC3 gene promoter associations, and the response to sulforaphane in the colon

Development of the Global Earthquake Model's neotectonic fault database

The Influence of fire on the Radiocarbon Signature and Character of Soil Organic Matter in the Siskiyou National Forest, Oregon, USA

Effects of the Positive Action Program on Indicators of Positive Youth Development Among Urban Youth

Spatially limited mud turbidites on the Cascadia margin: segmented earthquake ruptures?

Utilizing Fishermen Knowledge and Expertise: Keys to Success for Collaborative Fisheries Research

Does wildfire likelihood increase following insect outbreaks in conifer forests?

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