Index Catalog // ScholarsArchive@OSU

Assessing the role of reactive metal species in soil organic matter cycling using chemical imaging

Creator:: Keiluweit, Marco
Abstract:: Intimate associations with reactive metal species permanently protect soil organic matter (SOM) from microbial access and oxidation, contributing to the build-up of organic carbon (C) stocks in soils. It is increasingly recognized, however, that such associations can be reversible and that reactive metal species might even facilitate the oxidation of...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Marco Keiluweit for the degree of Doctor of Philosophy in Soil Science

Changes in soil respiration patterns induced by altering carbon-to-nitrogen ratio with nitrate nitrogen

Creator:: McCarthy, Charlotte Marie
Resource Type:: Masters Thesis
Full Text:: LITERATURE REVIE Woilny d1scvcred in 1880 that the carbon dioxide content of the soil rises and falls

Effects of 20 years of litter and root manipulations on soil organic matter dynamics

Creator:: Wig, Jennifer D.
Abstract:: Globally, the forestry sector is the second largest contributor of greenhouse gases, and sustainable forest management is a major target of international environmental policy. However, there is the assumption underlying many policy recommendations that an increase in above-ground carbon stocks correspond to long term increases in ecosystem carbon stocks, the...
Resource Type:: Masters Thesis
Full Text:: in soil respiration rates, probably due to decreases in moisture and organic matter content, but

Understory vegetation effects on soil nitrogen and soil carbon in thinned and unthinned Douglas-fir forests

Creator:: Geyer, Eric A.
Abstract:: The optimum goal of forest management is to foster long-term productivity and ecological integrity while maintaining or increasing short-term growth and yield through sustainable practices. Understory vegetation plays a definite role in forest functions through nutrient cycling and habitat provisions. The objective of this study was to determine how salal,...
Resource Type:: Masters Thesis
Full Text:: 5.3% N. Nutrient content is controlled by the soil's ability, determined by the soil type, to supply

Soluble carbon and respiration of forest humus

Creator:: Hu, Lily Jho-yuan
Abstract:: Humus is one of the important factors controlling the soil formation process. The nutrients released from it during the decomposition process also affect the growth and reproduction of the forest. The type of humus formed is influenced by the nature of the forest litter and the environment in which it...
Resource Type:: Masters Thesis
Full Text:: content, but to the available organic matter in the soil. Stotzky and Mortensen (1957) found that N was

Association of hydrophobic organic compounds with dissolved soil organic carbon

Creator:: Ochs, Michael
Abstract:: Volatile hydrophobic compounds (HOCs) brought into soil and sediment systems represent a serious threat to the environment. Dissolved organic carbon (DOC) may exert an important influence over the total aqueous solubility and mobility of organic pollutants through their incorporation into micelles or the formation of soluble complexes. To date, however,...
Resource Type:: Masters Thesis
Full Text:: soil organic carbon AN ABSTRACT OF THE THESIS OF Michael Ochs for the degree of Master of Science

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

Distinguishing biological and physical controls on soil respiration

Creator:: Phillips, Claire L.
Abstract:: Soil respiration, or the combined CO₂ emissions from roots and soil microorganisms, constitutes one of the largest losses of carbon (C) from terrestrial ecosystems. The major drivers of soil respiration, which include soil moisture, temperature, and substrate quality, have been known for some time. Nevertheless, correlations between these drivers and...
Resource Type:: Dissertation
Full Text:: October 23, 2009 Title: Distinguishing Biological and Physical Controls on Soil Respiration Abstract

Soil organic carbon response to six years of warming : assessing the impacts of altered diurnal temperature range

Creator:: Murphey, Virginia L. W.
Abstract:: There is a growing consensus that anthropogenic warming will impact soil organic matter (SOM). Globally, soil contains 2-3 times more carbon (C) than plants, and like plants, temperature induced change of SOM could have significant climate repercussions. Although, the majority of warming experiments have increased day and night temperatures equally,...
Resource Type:: Masters Thesis
Full Text:: content (mean ± s.e.) of soil density fractions at a) 0-10cm and b) 10-20cm for ambient (AMB), symmetric

Exploring Soil-Landscape Relationships on the Pacific Slope of Monteverde, Costa Rica

Creator:: Hesson, Kevin M.
Abstract:: Landscape positions have been used to determine soil properties. My soil study in Monteverde on the Pacific slope of Costa Rica was designed to examine soil-landscape relationships for sites with various land use histories and management. Soil pits were dug at Nacimiento y Vida, Crandell, Curi-cancha, La Calandria, and Finca...
Resource Type:: Masters Thesis
Full Text:: information on soil carbon content and clay content for the probe points. Statistical analysis revealed a

ScholarsArchive@OSU

Assessing the role of reactive metal species in soil organic matter cycling using chemical imaging

Changes in soil respiration patterns induced by altering carbon-to-nitrogen ratio with nitrate nitrogen

Effects of 20 years of litter and root manipulations on soil organic matter dynamics

Understory vegetation effects on soil nitrogen and soil carbon in thinned and unthinned Douglas-fir forests

Soluble carbon and respiration of forest humus

Association of hydrophobic organic compounds with dissolved soil organic carbon

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

Distinguishing biological and physical controls on soil respiration

Soil organic carbon response to six years of warming : assessing the impacts of altered diurnal temperature range

Exploring Soil-Landscape Relationships on the Pacific Slope of Monteverde, Costa Rica

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