Index Catalog // ScholarsArchive@OSU

Amphibian communities and climate change : Where ecological processes meet evolutionary interactions

Creator:: Thurman, Lindsey L.
Abstract:: Forecasts of the impacts of climate change have traditionally focused on individual species and their phenotypes, phenology, or distribution. However, shifts in species distributions and the resulting reorganization of community composition represent an important violation to the assumption of species acting in isolation. Whereas species may respond individualistically to climate...
Resource Type:: Dissertation
Full Text:: : Amphibian Communities and Climate Change: Where Ecological Processes Meet Evolutionary Interactions

The effects of alternative future development scenarios on ecological processes and social-ecological resilience in Central Oregon

Creator:: Duncan, James A.
Abstract:: This research sought to explore the implications of different tenure regimes for both landscape-level ecological processes and the overall resilience of a social-ecological system in Central Oregon. The purchase by an investor of former industrial timberlands known as the Bull Springs tract raised the specter of dispersed residential development on...
Resource Type:: Masters Thesis
Full Text:: , 2010. Title: The Effects of Alternative Future Development Scenarios on Ecological Processes and

Spatial analysis of Phellinus weirii infection centers in the central Cascades of Oregon : inferring ecological processes from patterns

Creator:: Lattin, Peter D.
Abstract:: This study was conducted to investigate why root disease centers east of the Cascade crest tend to be larger in diameter and more abundant than their counterparts to the west, within subalpine forest stands of central Oregon. The trend in a 290 km² study area appeared opposite of what was...
Resource Type:: Masters Thesis

Spatial Ecological Processes and Local Factors Predict the Distribution and Abundance of Spawning by Steelhead (Oncorhynchus mykiss) across a Complex Riverscape

Creator:: Falke, Jeffrey A., Dunham, Jason B., Jordan, Christopher E., McNyset, Kristina M., and Reeves, Gordon H.
Abstract:: Processes that influence habitat selection in landscapes involve the interaction of habitat composition and configuration and are particularly important for species with complex life cycles. We assessed the relative influence of landscape spatial processes and local habitat characteristics on patterns in the distribution and abundance of spawning steelhead (Oncorhynchus mykiss),...
Resource Type:: Article

Life cycle assessment of energy and GHG emissions during ethanol production from grass straws using various pretreatment processes

Creator:: Kumar, Deepak and Murthy, Ganti S.
Abstract:: Background, aim and scope: The aim of this study was to perform a well-to-pump life cycle assessment (LCA) to investigate the overall net energy balance and environmental impact of bioethanol production using Tall Fescue grass straw as feedstock. The energy requirements and green house gas (GHG) emissions were compared to...
Resource Type:: Article
Full Text:: straws using 3 various pretreatment processes 4 Affiliations: Deepak Kumar 1 , Ganti S. Murthy 1* 5

Quantitative Metatranscriptomics and Biogeochemical Rate Measurements Reveal Microbial Pathways Driving Carbon and Nitrogen Cycles in an Arctic Lagoon

Creator:: Griffin, Natasha A.
Abstract:: Microbial communities in Arctic coastal lagoons drive biogeochemical cycles at the terrestrial-marine interface and help to determine the fate and form of resources like nitrogen (N) and carbon (C) as they are delivered to the Arctic Ocean. Though rising rates of primary production in the Arctic Ocean are well-characterized, the...
Resource Type:: Masters Thesis
Full Text:: -Term Ecological Research group who mentored me both in and out of the field, and to all the BLE

Ecological genetics of two polymorphic enzymes in three species of Megalorchestia (Amphipoda:Talitridae)

Creator:: McDonald, John H.
Resource Type:: Masters Thesis
Full Text:: Master of Science in Oceanography presented on December 16, 1983. Title: Ecological Genetics of Two

Are meta-ecosystems organized hierarchically? A model and test in rocky intertidal habitats

Creator:: Menge, Bruce A., Gouhier, Tarik C., Hacker, Sally D., Chan, Francis, and Nielsen, Karina J.
Abstract:: Ecosystems are shaped by processes occurring and interacting over multiple temporal and spatial scales. Theory suggests such complexity can be simplified by focusing on processes sharing the same scale as the pattern of interest. This scale-dependent approach to studying communities has been challenged by multiscale meta-ecosystem theory, which recognizes that...
Resource Type:: Article

Bringing an ecological view of change to Landsat-based remote sensing

Creator:: Kennedy, Robert E., Andréfouët, Serge, Cohen, Warren B., Gómez, Cristina, Griffiths, Patrick, Hais, Martin, Healey, Sean P., Helmer, Eileen H., Hostert, Patrick, Lyons, Mitchell B., Meigs, Garrett W., Pflugmacher, Dirk, Phinn, Stuart R., Powell, Scott L., Scarth, Peter, Sen, Susmita, Schroeder, Todd A., Schneider, Annemarie, Sonnenschein, Ruth, Vogelmann, James E., Wulder, Michael A., and Zhu, Zhe
Abstract:: When characterizing the processes that shape ecosystems, ecologists increasingly use the unique perspective offered by repeat observations of remotely sensed imagery. However, the concept of change embodied in much of the traditional remote-sensing literature was primarily limited to capturing large or extreme changes occurring in natural systems, omitting many more...
Resource Type:: Article

Interactive visual analysis promotes exploration of long-term ecological data

Creator:: Pham, Tuan, Jones, Julia A., Metoyer, Ronald, Swanson, Frederick, and Pabst, Robert
Abstract:: Long-term ecological data are crucial in helping ecologists understand ecosystem function and environmental change. Nevertheless, these kinds of data sets are difficult to analyze because they are usually large, multivariate, and spatiotemporal. Although existing analysis tools such as statistical methods and spreadsheet software permit rigorous tests of pre-conceived hypotheses and...
Resource Type:: Article
Full Text:: distribution patterns and temporal trends in ecological data sets, and (2) an understanding of processes

ScholarsArchive@OSU

Amphibian communities and climate change : Where ecological processes meet evolutionary interactions

The effects of alternative future development scenarios on ecological processes and social-ecological resilience in Central Oregon

Spatial analysis of Phellinus weirii infection centers in the central Cascades of Oregon : inferring ecological processes from patterns

Spatial Ecological Processes and Local Factors Predict the Distribution and Abundance of Spawning by Steelhead (Oncorhynchus mykiss) across a Complex Riverscape

Life cycle assessment of energy and GHG emissions during ethanol production from grass straws using various pretreatment processes

Quantitative Metatranscriptomics and Biogeochemical Rate Measurements Reveal Microbial Pathways Driving Carbon and Nitrogen Cycles in an Arctic Lagoon

Ecological genetics of two polymorphic enzymes in three species of Megalorchestia (Amphipoda:Talitridae)

Are meta-ecosystems organized hierarchically? A model and test in rocky intertidal habitats

Bringing an ecological view of change to Landsat-based remote sensing

Interactive visual analysis promotes exploration of long-term ecological data

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