Index Catalog // ScholarsArchive@OSU

Magnetotelluric Constraints on Lithospheric Properties in the Southeastern United States

Creator:: Murphy, Benjamin S.
Abstract:: By inverting EarthScope long-period magnetotelluric (MT) data from the southeastern United States (SEUS), we obtain electrical conductivity images that provides key insights into the geodynamics of this region. Significantly, we resolve a highly electrically resistive block that extends to mantle depths beneath the modern Piedmont and Coastal Plain physiographic provinces....
Resource Type:: Dissertation

Restoring Ponderosa Pine: Understanding Individual Tree Defenses, Disturbance Responses, and Resilience

Creator:: Johnson, Christal
Abstract:: The aim of this research was to provide forest managers and researchers with a better understanding of individual tree defenses and tree responses to disturbances, within a Collaborative Forest Landscape Restoration Program area. Forest restoration often aims to increase stand-level resistance to uncharacteristic changes, and stand-level resistance begins with tree-level...
Resource Type:: Dissertation
Full Text:: /10.1016/j.foreco.2018.04.010 Bigler, C., Bugmann, H., 2004. Predicting the time of tree death using

Modeling Tree Size Distribution in Young Douglas-fir Plantations to Facilitate Tree List Generation for Growth Model Initiation at Different Ages and under Differing Silvicultural Regimes

Creator:: Uranga, Martin
Abstract:: Two key challenges emerge when initiating individual-tree growth models for bare ground or very young plantations. Both involve the need for a list of individual trees with known or predicted size and known expansion factor (number of trees per unit of area represented by each tree). In the case of...
Resource Type:: Dissertation

Computational Modeling of Smoldering Combustion in Wildland Fuels

Creator:: Jayasuriya, Waduge Jayani A.
Abstract:: Smoldering combustion in wildland fires is a critical phenomenon that needs in-depth study because it can initiate with weaker ignition sources, can persist for long periods, is difficult to suppress, and can transit to flaming combustion. Cellulose, hemicellulose, and lignin are the major organic constituents within biomass, in varying proportions...
Resource Type:: Dissertation

Impact of Dairy Manure Digestate on Microbial Activities in Soil

Creator:: Waggoner, Ashley L
Abstract:: Amendments and fertilizers applied to optimize crop production and improve soil health also supply inputs of soil organic matter (SOM) and nutrients that affect soil microorganisms. In the dairy-intensive Pacific Northwest, dairy manure is stored as slurry mixtures until conditions are appropriate for soil application. During storage, the manure begins...
Resource Type:: Dissertation
Full Text:: . Soil Biology and Biochemistry 99, 158–166. doi:10.1016/j.soilbio.2016.05.014 Dahlberg, S.P

Carbon Dynamics Associated with Land Cover Change in Tropical Mangrove Ecosystems of the Mahakam Delta, East Kalimantan, Indonesia

Creator:: Arifanti, Virni B.
Abstract:: The Mahakam Delta which was once among the largest mangrove forests in Indonesia, has been subjected to dramatic changes in structure and function due to massive shifts from mangrove forest to shrimp ponds and oil and gas development. To understand the impacts of mangrove loss to the greenhouse gas (GHG)...
Resource Type:: Dissertation
Full Text:: /10.1016/j.cub.2005.06.008 6 Donato, D. C., Kauffman, J. B., Murdiyarso, D., Kurnianto, S

Measuring and Modeling the Structure of Coniferous Trees with Point Clouds Data

Creator:: Fang, Rong
Abstract:: Coniferous trees are a major North American crop that has been intensively managed for its commercial value, while also serving as critical habitat for abundant wildlife and as carbon sinks. Having diverse functions, North American temperate coniferous forests have become a research hotspot for numerous scientific studies aiming to integrate...
Resource Type:: Dissertation
Full Text:: Environment 233, 111355. https://doi.org/10.1016/j.rse.2019.111355 Burkhart, H.E., Tomé, M., 2012

Hyperspectral Disease Detection - Strategies Addressing Time, Space, Machine Learning, and Plant Susceptibility

Creator:: Haagsma, Marja
Abstract:: Finding trees and crops that are resistant to pathogens is key in preparing for current and future disease threats. In this dissertation, we analyzed the potential of using hyperspectral imaging (HSI) to find infection while identifying issues and strategies addressing differences over time, in spatial resolution, the application of machine...
Resource Type:: Dissertation

Ecohydrologic Connections of Rangeland Ecosystems in Central and Eastern Oregon, USA

Creator:: Durfee, Nicole M.
Abstract:: In light of water scarcity and the impacts of climate change, there is an increased need to understand the interaction between land use characteristics and ecohydrologic processes in semiarid regions. Additionally, many semiarid and arid regions face various land management challenges, including woody plant encroachment, decreased snowpack, and increased stream...
Resource Type:: Dissertation

Experiments and Observations on How Changes in Riparian Forests Affect Light and Stream Ecosystems

Creator:: Swartz, Allison G.
Abstract:: Riparian zones are ecotones between terrestrial and aquatic ecosystems. Processes in streams are strongly influenced by riparian forest communities, age, stage and structure. Temperate forests across much of North America, including riparian areas, are recovering from historic land clearing with many stands in the stem-exclusion phase of development in which...
Resource Type:: Dissertation
Full Text:: –142. doi:10.1016/j.foreco.2006.08.005. Keeton, W.S., Kraft, C.E., and Warren, D.R. 2007. Mature and

ScholarsArchive@OSU

Magnetotelluric Constraints on Lithospheric Properties in the Southeastern United States

Restoring Ponderosa Pine: Understanding Individual Tree Defenses, Disturbance Responses, and Resilience

Modeling Tree Size Distribution in Young Douglas-fir Plantations to Facilitate Tree List Generation for Growth Model Initiation at Different Ages and under Differing Silvicultural Regimes

Computational Modeling of Smoldering Combustion in Wildland Fuels

Impact of Dairy Manure Digestate on Microbial Activities in Soil

Carbon Dynamics Associated with Land Cover Change in Tropical Mangrove Ecosystems of the Mahakam Delta, East Kalimantan, Indonesia

Measuring and Modeling the Structure of Coniferous Trees with Point Clouds Data

Hyperspectral Disease Detection - Strategies Addressing Time, Space, Machine Learning, and Plant Susceptibility

Ecohydrologic Connections of Rangeland Ecosystems in Central and Eastern Oregon, USA

Experiments and Observations on How Changes in Riparian Forests Affect Light and Stream Ecosystems

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