Index Catalog // ScholarsArchive@OSU

3D vs. conventional volcanic hazard maps : a user study at Mount Hood

Creator:: Preppernau, Charles A.
Abstract:: Volcanic hazard maps inform the public on the nature and extent of the hazards that threaten them, but these maps are often challenging for those who are not trained in map use or geology. The maps in this study focus on lahars, a dangerous, fast, and far-reaching volcanic hazard that...
Resource Type:: Masters Thesis
Full Text:: research as well as future uses for the methods used to create the maps. I would also like to thank Jay

A General Framework for Predicting the Geospatial Distribution of Botanical Species

Creator:: Chick, Jesse S.
Abstract:: The local presence or absence of individual botanical species can be predicted with high accuracy by a simple feed-forward neural network, using only local climate data to make inference. This study proposes a framework for learning these predictive models, demonstrates highly accurate predictions for species with a sufficiently large area...
Resource Type:: Honors College Thesis
Full Text:: Distribution of Botanical Species Abstract approved: Jay Alder The local presence or absence of individual

Analyzing the present and future Pacific-North American teleconnection using global and regional climate models

Creator:: Allan, Andrea M.
Abstract:: In this thesis I present the results of a comprehensive assessment of the Pacific-North American (PNA) teleconnection pattern in general circulation models (GCMs) and a regional climate model (RCM). The PNA teleconnection pattern is a quasi-stationary wave field over the North Pacific and North America that has long been recognized...
Resource Type:: Dissertation
Full Text:: thanks to Jay Alder for his eagerness and willingness to help me debug many IDL codes, fix computer

Effects of spatial scale and heterogeneity on avian occupancy dynamics and population trends in forested mountain landscapes

Creator:: Frey, Sarah J. K.
Abstract:: Population trends and patterns in species distributions are the major currencies used to examine responses by biodiversity to changing environments. Effective conservation recommendations require that models of both distribution dynamics and population trends accurately reflect reality. However, identification of the appropriate temporal and spatial scales of animal response, and then...
Resource Type:: Dissertation
Full Text:: done a great job of helping me think beyond birds. Jay Sexton also deserves special thanks. Without

Factors Influencing Streamflow Generation Processes in Rain-dominated, Coastal Watersheds in Oregon

Creator:: Pazdral, Rosemary
Abstract:: Relative to other systems in the PNW, the rain-dominated, coastal watersheds of western Oregon have shallow aquifers. Given the seasonality of streamflow and storage limitations in coastal, rain-dominated watersheds, changes in the temporal patterns of precipitation have the potential to magnify the risk of extreme streamflow conditions during both high-...
Resource Type:: Dissertation
Full Text:: helped me collect data in the field. Jay, Loretta, Dan, and many volunteers have been crucial to my

Multi-Centennial Response of ENSO Under Varying Atmospheric CO2

Creator:: Alder, Jay R.
Abstract:: The El Niño/Southern Oscillation (ENSO) affects millions of people via global teleconnections in the form of drought and torrential rainfall that impact agriculture and food production in many countries. Yet how ENSO will respond to a warming world is uncertain and a greatly debated topic. The Intergovernmental Panel on Climate...
Resource Type:: Capstone Project
Full Text:: MULTI-CENTENNIAL RESPONSE OF ENSO UNDER VARYING ATMOSPHERIC CO2 by Jay R. Alder A

Nearshore distribution of barnacle and mussel larvae and oceanographic mechanisms of onshore transport and delivery

Creator:: Tyburczy, Joe A.
Abstract:: Recruitment of larvae from the plankton is an important determinant of community structure in marine systems. In populations of many marine species, recruitment determines the basic demographic parameters of immigration, emigration, and reproduction. Moreover, the effect of recruitment as an "ecological subsidy" can determine the strength of interactions among species...
Resource Type:: Dissertation
Full Text:: , Phoebe and Jay Zarnetske, Catherine Searle, Mark Christie, Lindsay and Jason Biga, Jacob Tennessen

Population genetics of ranid frogs : investigating effective population size and gene flow

Creator:: Phillipsen, Ivan C.
Abstract:: This dissertation focuses on the evolutionary forces of genetic drift and gene flow in frog populations. The balance of these two forces and the force of mutation largely determine the amount of neutral genetic variation within populations as well as the degree of genetic similarity among populations. The stochastic evolutionary...
Resource Type:: Dissertation
Full Text:: Gene Flow Abstract approved: Michael S. Blouin This dissertation focuses on

Post-harvest establishment influences ANPP, soil C and DOC export in complex mountainous terrain

Creator:: Peterson, Fox S.
Abstract:: The link between aboveground net primary productivity (ANPP) and resource gradients generated by complex terrain (solar radiation, nutrients, and moisture) has been established in the literature. Belowground ecosystem stocks and functions, such as soil organic carbon (SOC), dissolved organic carbon (DOC), and belowground productivity have also been related to the...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Fox S. Peterson

Reactive polyphenols and dissolved nutrients in a nitrogen-limited headwater catchment, western Cascades, Oregon, USA

Creator:: Rasmussen, Janet K.
Abstract:: In undisturbed N-limited forested catchments, DON may represent over 90% of the total N lost in streams. Some ecologists have suggested that plant-derived reactive polyphenols may be responsible for DON binding and transport because polyphenol-protein complexes are known to precipitate out of solution, bind to mineral surfaces or organic matter...
Resource Type:: Masters Thesis
Full Text:: . Mark Harmon was willing to step in as Graduate Representative. Jay Frentress assisted with data

ScholarsArchive@OSU

3D vs. conventional volcanic hazard maps : a user study at Mount Hood

A General Framework for Predicting the Geospatial Distribution of Botanical Species

Analyzing the present and future Pacific-North American teleconnection using global and regional climate models

Effects of spatial scale and heterogeneity on avian occupancy dynamics and population trends in forested mountain landscapes

Factors Influencing Streamflow Generation Processes in Rain-dominated, Coastal Watersheds in Oregon

Multi-Centennial Response of ENSO Under Varying Atmospheric CO2

Nearshore distribution of barnacle and mussel larvae and oceanographic mechanisms of onshore transport and delivery

Population genetics of ranid frogs : investigating effective population size and gene flow

Post-harvest establishment influences ANPP, soil C and DOC export in complex mountainous terrain

Reactive polyphenols and dissolved nutrients in a nitrogen-limited headwater catchment, western Cascades, Oregon, USA

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