Index Catalog // ScholarsArchive@OSU

Toward understanding the nature of the soil microsite in relation to nitrogen and carbon cycling

Creator:: Cliff, John B.
Abstract:: My research has focused on understanding N and C cycling in soils at small scales. Isotope dilution methods commonly used to estimate gross rates of soil chemical transformations assume homogeneous distribution of label. I explored the effects of diffusion limitations on isotope dilution experiments in soil aggregates using spherical diffusion-reaction...
Resource Type:: Dissertation
Full Text:: OF THE SOIL MICROSITE IN RELATION TO NITROGEN AND CARBON CYCLING. Abstract approved: David D

A procedure for estimating the carbon budget of terrestrial ecosystems in the former Soviet Union by geographic information system analysis and classification of AVHRR derived Global Vegetation Index

Creator:: Gaston, Greg G.
Abstract:: The purpose of this research was to develop methods for using geographic information system (GIS) analysis and unsupervised classification of Global Vegetation Index (GVI) images to improve carbon budget estimates of the former Soviet Union (FSU). A GIS was used to locate the geographic distribution and estimate the area of...
Resource Type:: Dissertation
Full Text:: management. The effects of various tillage practices on the carbon cycle were estimated. Four year average

Microbial community dynamics associated with rhizosphere carbon flow

Creator:: Butler, Jessica L.
Abstract:: The cycling of root-deposited photo synthate (rhizodeposition) through the soil microbial biomass is widely recognized as a critical component of ecosystem functioning. Little is currently known about the flow of photosynthate through the microbial biomass however. My research goal was to examine if and how the flow of root-deposited photo...
Resource Type:: Masters Thesis
Full Text:: Dynamics Associated with Rhizoshere Carbon Flow. Abstract approved: Tbavid D. Myrold The cycling of

The distribution and partitioning of dissolved organic matter off the Oregon Coast : a first look

Creator:: Hill, Jon K.
Abstract:: The purpose of this thesis is to provide a first look at the spatial and temporal distributions of dissolved organic material (DOM) off the Oregon coast of North America. While this paper is not a comprehensive examination of these distributions, several patterns are identified as promising candidates for continued research....
Resource Type:: Masters Thesis
Full Text:: role in the carbon cycle, which involves biological, chemical, geological, and atmospheric aspects of

High-frequency measurements of total CO₂ : Method development and first oceanographic observations

Creator:: Bandstra, Leah M.
Abstract:: As concern grows about the long-term effects of increasing atmospheric CO₂ concentrations, it becomes increasingly important to understand the cycling of carbon on Earth, particularly in the dynamic marine reservoir. Gas exchange and relatively rapid ocean mixing times mean that the oceans play a significant role in determining the atmospheric...
Resource Type:: Masters Thesis
Full Text:: organic carbon and carbonate minerals contain the largest carbon reservoir on Earth, they cycle slowly in

Dynamics of water-soluble carbon in forest soils of contrasting fertility

Creator:: Wagai, Rota
Abstract:: Most soil organic C is in a stable form, associated with clay minerals in the upper soil profile. Upon environmental and land-use changes, stable soil C is subject to losses, which influence the global C cycle and the productivity of terrestrial ecosystems. However, mechanisms controlling soil C destabilization are not...
Resource Type:: Masters Thesis

NMR study of 1,4-phenilene-bis(dithiadiazolyl), soil organic matter and copper aluminum oxide

Creator:: Monte, Francesca
Resource Type:: Dissertation
Full Text:: ofglobal warming on the global carbon cycle. We describe how global warming can affect the global carbon

Linking soluble C to microbial community composition and dynamics during decomposition of ¹³C-labeled ryegrass

Creator:: McMahon, Shawna K.
Abstract:: Ryegrass residue consists of three main C fractions: readily available soluble C, intermediately available cellulose and hemicellulose, and slowly available lignin. Changes in chemical composition during decomposition influence rate of degradation as well as composition of the microbial community involved. Use of ¹³C-labeled plant material coupled with analysis of phospholipid...
Resource Type:: Masters Thesis
Full Text:: (PLFA5) 9 Stable Carbon Isotope: '3C 19 Summary 25 References 27 Microbial Dynamics During

Carbon and energy exchange of semi-arid ecosystems with heterogeneous canopy structure

Creator:: Anthoni, Peter M.
Abstract:: Carbon and energy fluxes were measured with the eddy covariance technique above two semi-arid ecosystems, ponderosa pine and juniper/sagebrush, located in central Oregon. The two ecosystems have low LAI and a very open canopy structure. The energy closure was ~70-80% at both ecosystems, equivalent to an imbalance of 150-250 W...
Resource Type:: Dissertation
Full Text:: ). To balance the global carbon cycle (years 1980-1989) with emissions from fossil fuel (-5.5 ± 0.5 Gt

Potential carbon storage at the landscape scale in the Pacific Northwest, U.S.A.

Creator:: Smithwick, Erica Ann Hoffa
Abstract:: Estimates of potential carbon (C) storage can be used to constrain predictions of future carbon sequestration and to understand the degree to which disturbances, both natural aid anthropogenic, affect C storage. An upper bound on C storage in the Pacific Northwest (PNW) of the United States was estimated using field...
Resource Type:: Dissertation
Full Text:: the carbon (C) cycle due to evidence of increasing carbon dioxide (CO2) in the atmosphere

ScholarsArchive@OSU

Toward understanding the nature of the soil microsite in relation to nitrogen and carbon cycling

A procedure for estimating the carbon budget of terrestrial ecosystems in the former Soviet Union by geographic information system analysis and classification of AVHRR derived Global Vegetation Index

Microbial community dynamics associated with rhizosphere carbon flow

The distribution and partitioning of dissolved organic matter off the Oregon Coast : a first look

High-frequency measurements of total CO₂ : Method development and first oceanographic observations

Dynamics of water-soluble carbon in forest soils of contrasting fertility

NMR study of 1,4-phenilene-bis(dithiadiazolyl), soil organic matter and copper aluminum oxide

Linking soluble C to microbial community composition and dynamics during decomposition of ¹³C-labeled ryegrass

Carbon and energy exchange of semi-arid ecosystems with heterogeneous canopy structure

Potential carbon storage at the landscape scale in the Pacific Northwest, U.S.A.

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