Index Catalog // ScholarsArchive@OSU

Evaluating Spatial Patterns of Heavy Metal Levels and Pb Isotopic Compositions of Peat Soils along the Red Dog Mine Haul Road in Northwest Alaska

Creator:: Melby, Kali M.
Abstract:: This study evaluates ore transport and other mining activities on metal levels in the remote Arctic ecosystem of Cape Krusenstern National Monument (CAKR) in northwestern Alaska. This monument is 50 km SW of Red Dog Mine, one of the world’s largest Pb–Zn mines. The Delong Mountain Transportation System (DMTS) haul...
Resource Type:: Masters Thesis
Full Text:: approved: ______________________________________________________ Alyssa E. Shiel This study

Cover crop effect on soil microbial biomass after fumigation in potato fields in the Columbia Basin

Creator:: Kim, Esther
Abstract:: In the Columbia Basin, pre-plant soil fumigation is commonly used in potato production for pest control, but fumigation can kill non-target organisms within the soil, result in unintended shifts in the microbial community, and disrupt long-term soil health. Cover crops have been shown to strongly influence the numbers and communities...
Resource Type:: Masters Thesis
Full Text:: . Columbia root-knot nematode, Meloidogyne spp., is found in abundance in sandy soils and quite problematic

Use of decision tree analysis for predictive soils mapping and implementation on the Malheur County, Oregon initial soil survey

Creator:: Hash, Sarah Jane
Abstract:: Soil surveys provide essential information for making land use and management decisions on publicly-owned lands in the semi-arid Great Basin. Soil maps produced with conventional mapping techniques are time-consuming, costly, and do not explicitly document the soil scientist's mental soil-landscape model. Predictive soils mapping using decision tree analysis (DTA) can...
Resource Type:: Masters Thesis
Full Text:: Oregon: A Geological and Natural History, E. M. Bishop (2003) states that the youngest 7 of

Influence of Soil Texture on Carbon Storage of PNW Coastal Blue Carbon Ecosystems

Creator:: Fox, Conner S.
Abstract:: Coastal blue carbon ecosystems offer a variety of important ecosystem services, including exceptional rates of carbon sequestration and long-term carbon storage. Because these ecosystems disproportionately influence global carbon cycling, understanding their soil characteristics may help guide long-term climate change mitigation and adaptation strategies. Recently, Kauffman et al. (2020) observed the...
Resource Type:: Honors College Thesis
Full Text:: relatively uniform across depths. The predominant soil textures across all sites were loam and sandy loam

Artificial means of distinguishing smooth-line map unit boundaries : an examination of Oregon soil survey maps

Creator:: Sun, Yulin
Abstract:: Soil is a complex living system with high heterogeneity, which makes locating soil map boundaries a challenge. In traditional soil survey, the placement of soil map boundaries relies largely (at least initially) on identifying the soil-forming factors of biota and topographic relief through stereo aerial photo pairs. Future soil survey...
Resource Type:: Masters Thesis
Full Text:: ...................................................16 4.1.4 Group D Keel and Sifton….…………………………………….....17 4.1.5 Group E Powell

Carbon cycling and priming of soil organic matter decomposition in a forest soil following glucose additions

Creator:: Diaz, David D.
Abstract:: Soils are a globally significant carbon (C) pool and have the potential to respond to elevated CO2 and environmental changes through positive feedback cycles that enhance the turnover of soil organic matter (SOM). Understanding the mechanisms governing the turnover of SOM is particularly important for modeling the fate of C...
Resource Type:: Masters Thesis
Full Text:: Effects Non-significant Enzyme Effects Source glucose (300) alkaline phosphatase (sandy

Using Algal Biomass as a Fertilizer

Creator:: Cappellazzi, Shannon B.
Abstract:: Algae can be used in a variety of wastewater systems to capture nutrients while fixing carbon dioxide from the atmosphere. I conducted field trials at three locations in Oregon with both corn and potato crops to assess the agronomic value and environmental impact of using the resulting algal biomass as...
Resource Type:: Dissertation
Full Text:: trial is mapped as Poe, a sandy, mixed, mesic Typic Durochrept. Site characteristics are available in

Scaling, ash-driven bistability, and other agents of soilscape genesis discovered while digitally mapping soils of the Blue Mountains, Oregon

Creator:: Almquist, Vance Warner
Abstract:: This dissertation reports on four related, though separate projects. The first project details the process of carrying out a digitally augmented soil mapping (DSM) effort alongside an ongoing survey in Oregon's Ochoco National Forest (ONF) using a Random Forest algorithm. The second chapter describes a initial soil survey in Oregon's...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . 88 d Surface Irregularity . . . . . . . . . . . . . . . . . . . . . . . 88 e Fuzzy Surface

Contributions of ammonia-oxidizing bacteria and archaea to nitrification in forest soils

Creator:: Lu, Xinda
Abstract:: Prior to 2005, ammonia oxidation, the first step of nitrification, was thought mediated mainly by ammonia-oxidizing bacteria (AOB). However, the discovery of Thaumarchaeota carrying the genes coding for the ammonia monooxygenase (AMO) enzyme led to the discovery that ammonia-oxidizing archaea (AOA) also contribute to nitrification. Despite the uptick in studies...
Resource Type:: Masters Thesis

The legacy of Dr. Francis Hole : examining soil organic carbon after 50 years of detrital manipulation

Creator:: Townsend, Kimberly L.
Abstract:: Models of ecosystem carbon (C) balance generally assume a strong relationship between net primary productivity (NPP), litter inputs, and soil C accumulation, but there is little direct evidence for such a coupled relationship. Using a unique 50-year detrital manipulation experiment in a in a mixed deciduous forest and restored prairie...
Resource Type:: Masters Thesis
Full Text:: bulk soil by treatment from Noe Woods (A, B), Wingra Woods (C, D), Curtis Prairie 1 (E, F), and Curtis

ScholarsArchive@OSU

Evaluating Spatial Patterns of Heavy Metal Levels and Pb Isotopic Compositions of Peat Soils along the Red Dog Mine Haul Road in Northwest Alaska

Cover crop effect on soil microbial biomass after fumigation in potato fields in the Columbia Basin

Use of decision tree analysis for predictive soils mapping and implementation on the Malheur County, Oregon initial soil survey

Influence of Soil Texture on Carbon Storage of PNW Coastal Blue Carbon Ecosystems

Artificial means of distinguishing smooth-line map unit boundaries : an examination of Oregon soil survey maps

Carbon cycling and priming of soil organic matter decomposition in a forest soil following glucose additions

Using Algal Biomass as a Fertilizer

Scaling, ash-driven bistability, and other agents of soilscape genesis discovered while digitally mapping soils of the Blue Mountains, Oregon

Contributions of ammonia-oxidizing bacteria and archaea to nitrification in forest soils

The legacy of Dr. Francis Hole : examining soil organic carbon after 50 years of detrital manipulation

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