subject:(Soil organic matter)

Cornell University

1. Ptak, Corey. Formation Of Iron Complexes In Soil Organic Matter And Their Influence On Mobility And Bioavailability Of Antimony.

Degree: PhD, Environmental Toxicology, 2013, Cornell University

URL: http://hdl.handle.net/1813/33832

► Antimony (Sb) is a metalloid belonging to group 15 of the periodic table. Chemical similarities between arsenic (As) and Sb produce concerns about potential health… (more)

▼ Antimony (Sb) is a metalloid belonging to group 15 of the periodic table. Chemical similarities between arsenic (As) and Sb produce concerns about potential health effects of Sb and enrichment in the Environment. Sb is found in the environment as an oxyanionic species, antimonate (Sb(OH)6-). As a result of its net negative charge, antimonate was not initially predicted to have strong interactions with natural organic matter. It has been suggested that oxyanionic species could bind the negatively charged organic matter via a ternary complexation mechanism, in which cationic metals mediate the strong association between organic matter functional groups and oxyanions. The structure of these complexes remains poorly characterized. XANES spectroscopy was performed on organic soils amended with increasing iron levels in order to elucidate the structure of organically complexed iron. Humic acid complexes of iron were also synthesized and examined using XANES and Mossbauer spectroscopy. Two distinct iron sites were found in organic materials. A monomeric iron site and an oligomeric site consisting of small clusters of iron at sub-oxide levels. Phosphate exchangeable Sb was predicted to represent the majority of soil bound Sb. However, phosphate extractable Sb from soils is lower than anticipated. The affect to phosphate on Sb retention in organic soils was examined. Phosphate addition significantly reduced Sb retention in organic soils treated with Fe. The influence of organically complexed Fe on the mobility of Sb was assessed. Increasing Fe amendments resulted in an increase in Sb retention in organic soils. Further examination of the bioavailability of Sb to maize seedlings as a function of organically complexed Fe was examined using a greenhouse study. An unexpected increase in plant tissue Sb was observed as organically complexed Fe increased, which was not predicted by extractions commonly used to assess bioavailable Sb. Extraction of soils with organic acids common to the maize rhizosphere suggested that organic acid exudation can readily mobilize Sb bound by organic iron complexes. Overall, iron complexes in soil organic materials were found to have significant implications on mobility and bioavailability of Sb. Additionally, methods used to assess bioavailable Sb underestimate Sb mobility in organic soils. Advisors/Committee Members: McBride, Murray Brian (chair), Ahner, Beth A (committee member), Duxbury, John M (committee member).

Subjects/Keywords: Antimony; Soil Organic Matter; Iron

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ptak, C. (2013). Formation Of Iron Complexes In Soil Organic Matter And Their Influence On Mobility And Bioavailability Of Antimony. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/33832

Chicago Manual of Style (16^th Edition):

Ptak, Corey. “Formation Of Iron Complexes In Soil Organic Matter And Their Influence On Mobility And Bioavailability Of Antimony.” 2013. Doctoral Dissertation, Cornell University. Accessed March 04, 2021. http://hdl.handle.net/1813/33832.

MLA Handbook (7^th Edition):

Ptak, Corey. “Formation Of Iron Complexes In Soil Organic Matter And Their Influence On Mobility And Bioavailability Of Antimony.” 2013. Web. 04 Mar 2021.

Vancouver:

Ptak C. Formation Of Iron Complexes In Soil Organic Matter And Their Influence On Mobility And Bioavailability Of Antimony. [Internet] [Doctoral dissertation]. Cornell University; 2013. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1813/33832.

Council of Science Editors:

Ptak C. Formation Of Iron Complexes In Soil Organic Matter And Their Influence On Mobility And Bioavailability Of Antimony. [Doctoral Dissertation]. Cornell University; 2013. Available from: http://hdl.handle.net/1813/33832

University of Minnesota

2. Bye, Erik. Chemical Characterization Of Soil Organic Matter In A Chesapeake Bay Salt Marsh: Analyzing Microbial And Vegetation Inputs.

Degree: MS, Water Resources Science, 2018, University of Minnesota

URL: http://hdl.handle.net/11299/216311

► Blue carbon ecosystems play an outsized role in the burial and storage of organic matter compared to other ecosystems. Increasing CO2 levels, sea level rise,… (more)

Subjects/Keywords: lignin; matter; organic; soil

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bye, E. (2018). Chemical Characterization Of Soil Organic Matter In A Chesapeake Bay Salt Marsh: Analyzing Microbial And Vegetation Inputs. (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/216311

Chicago Manual of Style (16^th Edition):

Bye, Erik. “Chemical Characterization Of Soil Organic Matter In A Chesapeake Bay Salt Marsh: Analyzing Microbial And Vegetation Inputs.” 2018. Masters Thesis, University of Minnesota. Accessed March 04, 2021. http://hdl.handle.net/11299/216311.

MLA Handbook (7^th Edition):

Bye, Erik. “Chemical Characterization Of Soil Organic Matter In A Chesapeake Bay Salt Marsh: Analyzing Microbial And Vegetation Inputs.” 2018. Web. 04 Mar 2021.

Vancouver:

Bye E. Chemical Characterization Of Soil Organic Matter In A Chesapeake Bay Salt Marsh: Analyzing Microbial And Vegetation Inputs. [Internet] [Masters thesis]. University of Minnesota; 2018. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/11299/216311.

Council of Science Editors:

Bye E. Chemical Characterization Of Soil Organic Matter In A Chesapeake Bay Salt Marsh: Analyzing Microbial And Vegetation Inputs. [Masters Thesis]. University of Minnesota; 2018. Available from: http://hdl.handle.net/11299/216311

University of Adelaide

3. Moata, Melinda Rosita Secentin. Investigating the role of stoichiometry as an influence on soil phosphorus content and forms.

Degree: 2016, University of Adelaide

URL: http://hdl.handle.net/2440/102557

► The elemental composition (stoichiometry) of soil organic matter (SOM) plays an important role in the dynamics of nutrient transformations in terrestrial ecosystems. Many previous studies… (more)

▼ The elemental composition (stoichiometry) of soil organic matter (SOM) plays an important role in the dynamics of nutrient transformations in terrestrial ecosystems. Many previous studies have reported several factors affect the stoichiometry of SOM (e.g. climate, land use, soil properties) and confirmed a relatively constrained stoichiometry of carbon (C) and nitrogen (N). On the other hand, correlations of C and N to phosphorus (P) in SOM are usually much weaker. This can partly be attributed to the fact that soils contain substantial quantities of inorganic as well as organic P. Some studies have reported stronger correlations of organic P than total P to the key elements of SOM (i.e. C and N), though are still not as strong as between C and N (mostly present as organic N). There are multiple possible reasons for this, including limitations in the way organic P is measured and the diversity of organic P forms that may be present in soils. Recent advances in solution ³¹P NMR (nuclear magnetic resonance) analysis provide an opportunity to reassess the stoichiometry of P in SOM, as NMR provides a detailed and quantitative assessment of the various classes of organic P present in soils. Thus the implementation of solution ³¹P NMR analysis facilitates investigation of whether the weak overall stoichiometric relationships of P in SOM may be masking stronger stoichiometric control of particular SOM components or chemical forms. These issues are agronomic and environmental importance because organic phosphorus represents a substantial pool of P in soils. Although organic P is not directly plant available, it can become available to plants through microbial mineralisation. Understanding the processes involved would be of potential benefit to agricultural producers in assessing P fertility of soils and better estimating P fertiliser requirements and also to environmental managers in assessing the risk of P transfer from soils to water ways where excess P is a major cause of eutrophication. This thesis describes a range of activities aimed at improving understanding the role of stoichiometry of P in SOM. The main limitation of solution ³¹P NMR spectroscopy as a method for analysis of soil P is the inherently low sensitivity of NMR. This results in long acquisition times (typically one day per sample) and hence low sample throughput. Furthermore, low sensitivity limits detection and quantification of species present in low concentrations. The first part of this thesis reports on efforts to improve sensitivity by tightening the ratio of soil to solution in the extraction step preceding NMR analysis. The most commonly used procedure involves extraction with a mixture of NaOH and EDTA at a ratio of 1:20. A range of tighter extraction ratios down to 1:4 were tested for a set of four Red Chromosol topsoils with low P contents, and it was shown that at lower extraction ratios the signal to noise ratio of spectra was improved with little or no loss in extraction efficiency, there was no loss in signal resolution and no difference in… Advisors/Committee Members: McNeill, Ann Marie (advisor), Smernik, Ronald Josef (advisor), Macdonald, Lynne (advisor), Doolette, Ashlea (advisor), School of Agriculture, Food and Wine (school).

Subjects/Keywords: soil phosphorus; stoichiometry; soil organic matter

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Moata, M. R. S. (2016). Investigating the role of stoichiometry as an influence on soil phosphorus content and forms. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/102557

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Moata, Melinda Rosita Secentin. “Investigating the role of stoichiometry as an influence on soil phosphorus content and forms.” 2016. Thesis, University of Adelaide. Accessed March 04, 2021. http://hdl.handle.net/2440/102557.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Moata, Melinda Rosita Secentin. “Investigating the role of stoichiometry as an influence on soil phosphorus content and forms.” 2016. Web. 04 Mar 2021.

Vancouver:

Moata MRS. Investigating the role of stoichiometry as an influence on soil phosphorus content and forms. [Internet] [Thesis]. University of Adelaide; 2016. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/2440/102557.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Moata MRS. Investigating the role of stoichiometry as an influence on soil phosphorus content and forms. [Thesis]. University of Adelaide; 2016. Available from: http://hdl.handle.net/2440/102557

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Technical University of Lisbon

4. Morillo Sierra, Alberto. Estudo do comportamento de residuos orgânicos no solo.

Degree: 2012, Technical University of Lisbon

URL: http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/5468

►

Mestrado em Engenharia do Ambiente - Instituto Superior de Agronomia

The food production is not only one of the main pillars of the Society but… (more)

Subjects/Keywords: organic waste; soil; mineralization; organic matter

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Morillo Sierra, A. (2012). Estudo do comportamento de residuos orgânicos no solo. (Thesis). Technical University of Lisbon. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/5468

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Morillo Sierra, Alberto. “Estudo do comportamento de residuos orgânicos no solo.” 2012. Thesis, Technical University of Lisbon. Accessed March 04, 2021. http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/5468.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Morillo Sierra, Alberto. “Estudo do comportamento de residuos orgânicos no solo.” 2012. Web. 04 Mar 2021.

Vancouver:

Morillo Sierra A. Estudo do comportamento de residuos orgânicos no solo. [Internet] [Thesis]. Technical University of Lisbon; 2012. [cited 2021 Mar 04]. Available from: http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/5468.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Morillo Sierra A. Estudo do comportamento de residuos orgânicos no solo. [Thesis]. Technical University of Lisbon; 2012. Available from: http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/5468

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toronto

5. Mitchell, Perry. Wastewater Contaminant Sorption and Dissolved Organic Matter Characterization.

Degree: 2013, University of Toronto

URL: http://hdl.handle.net/1807/35643

►

Irrigation using reclaimed wastewater can introduce organic contaminants and dissolved organic matter (DOM) to soils. Sorption of three common organic wastewater contaminants to five soils… (more)

Subjects/Keywords: organic contaminants; dissolved organic matter; sorption; organic geochemistry; soil; soil organic matter; 0486

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mitchell, P. (2013). Wastewater Contaminant Sorption and Dissolved Organic Matter Characterization. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/35643

Chicago Manual of Style (16^th Edition):

Mitchell, Perry. “Wastewater Contaminant Sorption and Dissolved Organic Matter Characterization.” 2013. Masters Thesis, University of Toronto. Accessed March 04, 2021. http://hdl.handle.net/1807/35643.

MLA Handbook (7^th Edition):

Mitchell, Perry. “Wastewater Contaminant Sorption and Dissolved Organic Matter Characterization.” 2013. Web. 04 Mar 2021.

Vancouver:

Mitchell P. Wastewater Contaminant Sorption and Dissolved Organic Matter Characterization. [Internet] [Masters thesis]. University of Toronto; 2013. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1807/35643.

Council of Science Editors:

Mitchell P. Wastewater Contaminant Sorption and Dissolved Organic Matter Characterization. [Masters Thesis]. University of Toronto; 2013. Available from: http://hdl.handle.net/1807/35643

Virginia Tech

6. Sequeira, Cleiton Henrique. Soil Organic Matter Dynamics in Cropping Systems of Virginia's Valley Region.

Degree: PhD, Crop and Soil Environmental Sciences, 2011, Virginia Tech

URL: http://hdl.handle.net/10919/37381

► Soil organic matter (SOM) is a well known indicator of soil quality due to its direct influence on soil properties such as structure, soil stability,… (more)

Subjects/Keywords: soil nitrogen fractions; soil carbon fractions; soil quality; soil organic matter

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sequeira, C. H. (2011). Soil Organic Matter Dynamics in Cropping Systems of Virginia's Valley Region. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/37381

Chicago Manual of Style (16^th Edition):

Sequeira, Cleiton Henrique. “Soil Organic Matter Dynamics in Cropping Systems of Virginia's Valley Region.” 2011. Doctoral Dissertation, Virginia Tech. Accessed March 04, 2021. http://hdl.handle.net/10919/37381.

MLA Handbook (7^th Edition):

Sequeira, Cleiton Henrique. “Soil Organic Matter Dynamics in Cropping Systems of Virginia's Valley Region.” 2011. Web. 04 Mar 2021.

Vancouver:

Sequeira CH. Soil Organic Matter Dynamics in Cropping Systems of Virginia's Valley Region. [Internet] [Doctoral dissertation]. Virginia Tech; 2011. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10919/37381.

Council of Science Editors:

Sequeira CH. Soil Organic Matter Dynamics in Cropping Systems of Virginia's Valley Region. [Doctoral Dissertation]. Virginia Tech; 2011. Available from: http://hdl.handle.net/10919/37381

University of Vermont

7. Hampsch, Alyson. Using Aqueous Soil Extracts to Study Organic Matter Leaching From Soils of Different River Corridor Land Covers in Vermont.

Degree: MS, Geology, 2016, University of Vermont

URL: https://scholarworks.uvm.edu/graddis/660

► Soils represent an important terrestrial carbon (C) sink, storing up to three times the amount of atmospheric C, however climate and land use changes… (more)

▼ Soils represent an important terrestrial carbon (C) sink, storing up to three times the amount of atmospheric C, however climate and land use changes may transform soils into C sources. River corridor (RC) soils and associated C are at risk to become mobilized by erosion such as bank failure and scour events. Once soil-derived organic C is transferred into the stream, microbial processes and photodegradation of the dissolved, labile (or bioavailable) fractions can lead to the production of CO2, which can evade and increase atmospheric CO2 levels. Because predicted increases in heavy precipitation will likely increase this type of riverine erosion, it is important to better understand the potential for the release of bioavailable C from RCs. One objective of this thesis was therefore to identify and characterize representative samples of soils from a typical Vermont RC for common land covers and simulate the production of dissolved organic matter (DOM) during riverine soil erosion. Field sites representative of typical agricultural and forested land uses were selected based on the analysis of 106 existing samples and resampled multiple times over the summer of 2015. Production of DOM from riverine erosion was simulated using aqueous soil extracts (ASE), where soil and water were shaken at fixed ratios followed by the separation of the extract. To study the characteristics of these extracts (which serve as analogue of stream water after erosion), water extractable C (WEOC) concentrations, water extractable nitrogen, fluorescence properties of DOM, and bioavailability were determined. Results indicated a common, dominantly terrestrial source material for all land covers, but C concentrations and fluorescence properties differed. High but variable amounts of soil organic C and WEOC were observed in agricultural riparian and agricultural stream bank samples, and lower concentrations in agricultural field, forest, forest riparian, and forest stream banks. WEOC bioavailability was high in all agricultural land covers and low in forested land covers. Because this study is the first in which ASE are used as analogues for stream water after riverine erosion, a second objective was to test laboratory methods used in this study for their effect on WEOC, fluorescence properties, and bioavailability. Specifically, the effects of soil drying, soil storage, and the effects of the extraction solution were tested. For this, ASE were prepared from soils that were field moist, dried, and after two years of storage. In addition, dried soils were extracted using different solutions including a salt solution, river water, and double deionized (DDI) water. Results indicated WEOC concentration and microbial humic-like fluorescence from extracts of dried soils were higher than those in extracts of field moist soils, while WEOC concentration and microbial humic-like fluorescence was highest in extracts of soils stored long term. In addition, the bioavailability of WEOC was higher in dried soils than field moist soils. The… Advisors/Committee Members: Julia N. Perdrial.

Subjects/Keywords: Aqueous Soil Extract; River Corridor; Soil Organic Carbon; Soil Organic Matter; Soil Science

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hampsch, A. (2016). Using Aqueous Soil Extracts to Study Organic Matter Leaching From Soils of Different River Corridor Land Covers in Vermont. (Thesis). University of Vermont. Retrieved from https://scholarworks.uvm.edu/graddis/660

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hampsch, Alyson. “Using Aqueous Soil Extracts to Study Organic Matter Leaching From Soils of Different River Corridor Land Covers in Vermont.” 2016. Thesis, University of Vermont. Accessed March 04, 2021. https://scholarworks.uvm.edu/graddis/660.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hampsch, Alyson. “Using Aqueous Soil Extracts to Study Organic Matter Leaching From Soils of Different River Corridor Land Covers in Vermont.” 2016. Web. 04 Mar 2021.

Vancouver:

Hampsch A. Using Aqueous Soil Extracts to Study Organic Matter Leaching From Soils of Different River Corridor Land Covers in Vermont. [Internet] [Thesis]. University of Vermont; 2016. [cited 2021 Mar 04]. Available from: https://scholarworks.uvm.edu/graddis/660.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hampsch A. Using Aqueous Soil Extracts to Study Organic Matter Leaching From Soils of Different River Corridor Land Covers in Vermont. [Thesis]. University of Vermont; 2016. Available from: https://scholarworks.uvm.edu/graddis/660

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Missouri – Columbia

8. Veum, Kristen Sloan. Characterization of soil organic matter under varying conservation management practices.

Degree: 2012, University of Missouri – Columbia

URL: https://doi.org/10.32469/10355/35195

► This study examined the effects of three conservation management practices (i.e., no-till, grass vegetative filter strips (VFS) and agroforestry VFS) and four landscape positions (i.e.,… (more)

Subjects/Keywords: conservation management; landscape positions; soil organic matter

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Veum, K. S. (2012). Characterization of soil organic matter under varying conservation management practices. (Thesis). University of Missouri – Columbia. Retrieved from https://doi.org/10.32469/10355/35195

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Veum, Kristen Sloan. “Characterization of soil organic matter under varying conservation management practices.” 2012. Thesis, University of Missouri – Columbia. Accessed March 04, 2021. https://doi.org/10.32469/10355/35195.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Veum, Kristen Sloan. “Characterization of soil organic matter under varying conservation management practices.” 2012. Web. 04 Mar 2021.

Vancouver:

Veum KS. Characterization of soil organic matter under varying conservation management practices. [Internet] [Thesis]. University of Missouri – Columbia; 2012. [cited 2021 Mar 04]. Available from: https://doi.org/10.32469/10355/35195.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Veum KS. Characterization of soil organic matter under varying conservation management practices. [Thesis]. University of Missouri – Columbia; 2012. Available from: https://doi.org/10.32469/10355/35195

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Minnesota

9. Ryan, Maeve Elizabeth. Factors Controlling the Decomposition of Ectomycorrhizal Fungal Tissue and the Formation of Soil Organic Matter.

Degree: MS, Chemistry, 2019, University of Minnesota

URL: http://hdl.handle.net/11299/206142

► The turnover of ectomycorrhizal (ECM) fungi accounts for up to half of the organic carbon found in forest soils and therefore represents an important pathway… (more)

▼ The turnover of ectomycorrhizal (ECM) fungi accounts for up to half of the organic carbon found in forest soils and therefore represents an important pathway for the removal of carbon from the atmosphere to be stored belowground as long-lived soil organic matter (SOM). Understanding the flux of fungal necromass inputs to SOM, and their subsequent stabilization potential in forest soils, requires an understanding of the chemical changes that occur during the degradation of fungal tissue. Additionally, it is hypothesized that degradation of fungal necromass is slowed by high melanin content and accelerated by high nitrogen content. A field degradation study was carried out at the Cedar Creek Ecosystem Science Reserve in East Bethel, Minnesota. Necromass from four species of ECM fungi with varying degrees of melanization was buried in litter bags in a Pinus-dominated forest below the soil litter layer, allowed to degrade naturally, and harvested nine times over a period of 90 days. Harvest was more frequent during the first week to gain insight into the dynamic early decomposition period. Elemental analysis (EA), Fourier-transform infrared spectroscopy (FTIR), and thermochemolysis-gas chromatography-mass spectrometry (pyGCMS), including novel methods of quantifying the contribution from various types of biopolymers to the total remaining tissue, supplement mass loss data to provide an overview of the chemical changes that occur as fungal necromass decomposes. Each of the four species lost a significant amount of mass in the first seven days of incubation but, at the end of the three-month degradation sequence, a significant fraction of fungal necromass remained. This necromass was chemically distinct from undegraded necromass, containing more aromatic compounds, suggesting that the relative abundance of melanin, which is highly aromatic, increased as other cellular components degraded away. Although melanin content was hypothesized to slow degradation, a high-melanin species degraded at effectively the same rate as the two low-melanin species. Differences in degradation rates across species can be attributed to initial nitrogen content, while melanin content could explain differences in degradation rate within a species.

Subjects/Keywords: degradation; fungus; mycorrhiza; soil organic matter

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ryan, M. E. (2019). Factors Controlling the Decomposition of Ectomycorrhizal Fungal Tissue and the Formation of Soil Organic Matter. (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/206142

Chicago Manual of Style (16^th Edition):

Ryan, Maeve Elizabeth. “Factors Controlling the Decomposition of Ectomycorrhizal Fungal Tissue and the Formation of Soil Organic Matter.” 2019. Masters Thesis, University of Minnesota. Accessed March 04, 2021. http://hdl.handle.net/11299/206142.

MLA Handbook (7^th Edition):

Ryan, Maeve Elizabeth. “Factors Controlling the Decomposition of Ectomycorrhizal Fungal Tissue and the Formation of Soil Organic Matter.” 2019. Web. 04 Mar 2021.

Vancouver:

Ryan ME. Factors Controlling the Decomposition of Ectomycorrhizal Fungal Tissue and the Formation of Soil Organic Matter. [Internet] [Masters thesis]. University of Minnesota; 2019. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/11299/206142.

Council of Science Editors:

Ryan ME. Factors Controlling the Decomposition of Ectomycorrhizal Fungal Tissue and the Formation of Soil Organic Matter. [Masters Thesis]. University of Minnesota; 2019. Available from: http://hdl.handle.net/11299/206142

University of Minnesota

10. Bruner, Valerie. Chemical Characterization of the Degradation of Necromass from Four Ascomycete Fungi: Implications for Soil Organic Carbon Turnover and Storage.

Degree: MS, Chemistry, 2020, University of Minnesota

URL: http://hdl.handle.net/11299/218666

► Terrestrial soils store approximately twice as much carbon as is currently in the atmospheric CO2 pool. Despite its importance in the global carbon cycle, much… (more)

Subjects/Keywords: fungi; GCMS; soil organic matter; thermochemolysis

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bruner, V. (2020). Chemical Characterization of the Degradation of Necromass from Four Ascomycete Fungi: Implications for Soil Organic Carbon Turnover and Storage. (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/218666

Chicago Manual of Style (16^th Edition):

Bruner, Valerie. “Chemical Characterization of the Degradation of Necromass from Four Ascomycete Fungi: Implications for Soil Organic Carbon Turnover and Storage.” 2020. Masters Thesis, University of Minnesota. Accessed March 04, 2021. http://hdl.handle.net/11299/218666.

MLA Handbook (7^th Edition):

Bruner, Valerie. “Chemical Characterization of the Degradation of Necromass from Four Ascomycete Fungi: Implications for Soil Organic Carbon Turnover and Storage.” 2020. Web. 04 Mar 2021.

Vancouver:

Bruner V. Chemical Characterization of the Degradation of Necromass from Four Ascomycete Fungi: Implications for Soil Organic Carbon Turnover and Storage. [Internet] [Masters thesis]. University of Minnesota; 2020. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/11299/218666.

Council of Science Editors:

Bruner V. Chemical Characterization of the Degradation of Necromass from Four Ascomycete Fungi: Implications for Soil Organic Carbon Turnover and Storage. [Masters Thesis]. University of Minnesota; 2020. Available from: http://hdl.handle.net/11299/218666

11. Abney, Rebecca Brianne. The role of erosion in soil organic matter and pyrogenic carbon dynamics in fire-prone temperate forests.

Degree: Environmental Systems, 2017, University of California – Merced

URL: http://www.escholarship.org/uc/item/0mb6v7p2

► Wildfire and erosion are major perturbations to the global carbon cycle in dynamic, fire-affected ecosystems around the world, including temperate forest ecosystems in the Sierra… (more)

▼ Wildfire and erosion are major perturbations to the global carbon cycle in dynamic, fire-affected ecosystems around the world, including temperate forest ecosystems in the Sierra Nevada. As a byproduct of fires, pyrogenic carbon (PyC) is formed due to incomplete combustion of biomass. PyC constitutes an important component of the soil carbon pool and has been noted for its long residence time in soil and its susceptibility to erosion. As part of my dissertation research, I determined the rate of PyC, bulk soil carbon, and other soil constituents erosion after two wildfires: the Gondola Fire that occurred in South Lake Tahoe in 2002, and the Rim Fire that affected parts of Yosemite National Park in 2013. I found significant and preferential erosion of PyC, and vertical mobilization of PyC down into the soil profile after the fires. The preferential erosion of PyC, and overall quality of the soil and eroded sediments were controlled by burn severity, with PyC from higher burn severity sites being more preferentially eroded. To assess the fate of PyC post-fire in dynamic landscapes, I incubated chars formed at different temperatures in soils from eroding and depositional landform positions. Both charring temperature and landform position played significant roles in controlling soil respiration, with the lower temperature chars and the soil from the depositional landform position having much higher respiration than higher temperature chars and the soil from the eroding landform position. The difference in breakdown rates of PyC in soil from different landform positions demonstrates the importance of considering landform position as a control on PyC persistence in soil and that the interaction between charring temperature and landform position plays a significant role in the persistence of PyC. The post-fire erosional transport of PyC may act in a feedback to enhance or decrease overall PyC and bulk carbon stocks in soil. In a modeling exercise, I showed that explicit consideration for erosional loss (from eroding slope positions) and depositional gain (in lower-lying depositional landform positions) of PyC in soil can have its mean residence time in soil. I found that ignoring the role of erosional lateral distribution on PyC dynamics can introduce error in estimated turnover times of up to 150 years. Among the major accomplishments of my dissertation project include the realistic integration of biogeochemical and geomorphological approaches to derive improved representation of mechanisms that regulate soil carbon persistence in dynamic landscapes that routinely experience more than one perturbation. Findings from my dissertation research will have far reaching implications for improving our understanding of fate of terrestrial carbon after it enters streams and other aquatic systems. Furthermore, results of this project will play important role in establishing how the interaction of fire and erosion will play out under anticipated climate change scenarios, and the implications of these interactions on biogeochemical…

Subjects/Keywords: Soil sciences; Biogeochemistry; Ecology; Erosion; Fire; organic matter stabilization; Pyrogenic carbon; Soil organic matter

10 more images…

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Abney, R. B. (2017). The role of erosion in soil organic matter and pyrogenic carbon dynamics in fire-prone temperate forests. (Thesis). University of California – Merced. Retrieved from http://www.escholarship.org/uc/item/0mb6v7p2

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Abney, Rebecca Brianne. “The role of erosion in soil organic matter and pyrogenic carbon dynamics in fire-prone temperate forests.” 2017. Thesis, University of California – Merced. Accessed March 04, 2021. http://www.escholarship.org/uc/item/0mb6v7p2.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Abney, Rebecca Brianne. “The role of erosion in soil organic matter and pyrogenic carbon dynamics in fire-prone temperate forests.” 2017. Web. 04 Mar 2021.

Vancouver:

Abney RB. The role of erosion in soil organic matter and pyrogenic carbon dynamics in fire-prone temperate forests. [Internet] [Thesis]. University of California – Merced; 2017. [cited 2021 Mar 04]. Available from: http://www.escholarship.org/uc/item/0mb6v7p2.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Abney RB. The role of erosion in soil organic matter and pyrogenic carbon dynamics in fire-prone temperate forests. [Thesis]. University of California – Merced; 2017. Available from: http://www.escholarship.org/uc/item/0mb6v7p2

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Colorado State University

12. Campbell, Eleanor Elizabeth. Modeling soil organic matter: theory, development, and applications in bioenergy cropping systems.

Degree: PhD, Ecology, 2015, Colorado State University

URL: http://hdl.handle.net/10217/167140

► Soil organic matter (SOM) is a complex, dynamic, and highly variable soil constituent that is of fundamental importance to many soil functions, terrestrial ecosystem processes,… (more)

▼ Soil organic matter (SOM) is a complex, dynamic, and highly variable soil constituent that is of fundamental importance to many soil functions, terrestrial ecosystem processes, and biogeochemical cycles. Its importance extends across scales, ranging from site-specific impacts on soil fertility to the global net exchange of carbon between terrestrial systems and the atmosphere. Soil organic matter is impacted by human activities, as seen most directly in agricultural systems. In this context, SOM models play an important role in integrating the understanding of complex, interacting soil processes across temporal and spatial scales, contributing to land use decision making by providing comparative evaluation of soil impacts associated with different management practices. Crop-based bioenergy feedstock productions systems are an emerging area for these types of SOM model applications. However, model evaluations are dependent on the theoretical basis of a given SOM model, as well as the quality of data used to drive the model for a given system or management scenario. This study therefore explores linkages between advances in the theoretical understanding of SOM dynamics, the development of SOM models to reflect these advances, and the application of SOM models to assess crop-based bioenergy production systems. First, five emerging areas in SOM research were reviewed in the context of SOM models, including SOM stabilization mechanisms, saturation kinetics, temperature sensitivity, dynamics in deep soils, and incorporation into earth system models. These reviews demonstrated the importance of identifying where SOM model development and applications are most limited, whether in theoretical understanding, in model implementation, or in data availability. For example, SOM saturation kinetics is theoretically well understood but remains difficult to implement in SOM models, only yielding improvements in a narrow set of ecological conditions. SOM temperature sensitivity and deep soil dynamics, however, are more limited by poor data availability in addition to poor theoretical understanding of interacting processes. A selection of shortfalls in SOM modeling were then addressed and explored with the Litter Decomposition and Leaching (LIDEL) model, a litter decomposition model that incorporates dynamic microbial carbon use efficiency (CUE) and yields dissolved organic carbon (DOC) as one of the byproducts of litter decomposition. In this analysis a hierarchical Bayesian statistical approach was used to test model performance and estimate unknown model parameters using experimental data. While this analysis showed the LIDEL model successfully integrates hypotheses for litter nitrogen and lignin controls on dynamic microbial CUE and the generation of DOC from litter decomposition, there remains a great deal of uncertainty in the rate of microbial biomass turnover as well as the proportioning of biomass from microbial turnover between solid versus soluble microbial products. Targeted experimental evaluation of the generation of… Advisors/Committee Members: Paustian, Keith (advisor), Parton, William B. (committee member), Cotrufo, M. Francesca (committee member), Reardon, Kenneth F. (committee member).

Subjects/Keywords: crop-based bioenergy; soil organic matter; sugarcane; DayCent; corn stover; soil organic matter modeling

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Campbell, E. E. (2015). Modeling soil organic matter: theory, development, and applications in bioenergy cropping systems. (Doctoral Dissertation). Colorado State University. Retrieved from http://hdl.handle.net/10217/167140

Chicago Manual of Style (16^th Edition):

Campbell, Eleanor Elizabeth. “Modeling soil organic matter: theory, development, and applications in bioenergy cropping systems.” 2015. Doctoral Dissertation, Colorado State University. Accessed March 04, 2021. http://hdl.handle.net/10217/167140.

MLA Handbook (7^th Edition):

Campbell, Eleanor Elizabeth. “Modeling soil organic matter: theory, development, and applications in bioenergy cropping systems.” 2015. Web. 04 Mar 2021.

Vancouver:

Campbell EE. Modeling soil organic matter: theory, development, and applications in bioenergy cropping systems. [Internet] [Doctoral dissertation]. Colorado State University; 2015. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10217/167140.

Council of Science Editors:

Campbell EE. Modeling soil organic matter: theory, development, and applications in bioenergy cropping systems. [Doctoral Dissertation]. Colorado State University; 2015. Available from: http://hdl.handle.net/10217/167140

Colorado State University

13. Soong, Jennifer L. Moving beyond mass loss: advancing understanding about the fate of decomposing leaf litter and pyrogenic organic matter in the mineral soil.

Degree: PhD, Ecology, 2014, Colorado State University

URL: http://hdl.handle.net/10217/83819

► Leaf litter decomposition recycles the energy and nutrients fixed by plants during net primary productivity back to the soil and atmosphere from where they came.… (more)

▼ Leaf litter decomposition recycles the energy and nutrients fixed by plants during net primary productivity back to the soil and atmosphere from where they came. Traditionally, leaf litter decomposition studies have focused on litter mass loss rates, without consideration for where that mass ends up in the ecosystem. However, during litter decomposition by soil microbes a fraction of the litter mass lost is truly lost to the ecosystem as respired CO2, while another fraction remains in the ecosystem stored in the soil as soil organic matter (SOM). SOM is heterogeneous in composition, with various SOM pools remaining stored in the soil for time spans ranging from days to millennia depending on their biochemical and physical properties. Pyrogenic organic matter (py-OM) is the partially combusted plant residue left behind by fires, and has been found to contribute to long term SOM pools. SOM accounts for the largest terrestrial pool of carbon (C) in the global C cycle and stores nitrogen (N) and other nutrients for plant productivity. Therefore the formation of SOM during litter decomposition is critical to terrestrial C and N cycling and its feedback to global biogeochemical cycles. The focus of my dissertation is the study of leaf litter and py-OM decomposition, and quantitatively tracing how much decomposing litter and py-OM is used by soil microbes, how much is lost as CO2, and how much remains in the soil and contributes to SOM formation under different conditions. In order to best address my research questions, I first studied the methods of leaching of dissolved organic carbon (DOC) and 13C and 15N isotope labeling of plant material in the laboratory. Then, I conducted a laboratory incubation where I found that the amount of hot water extractable C and the lignocellulose index (Lignin/(lignin+cellulose)) can be used to predict DOM leaching, and the partitioning of C loss between DOC and CO2 from leaves and py-OM during decomposition. I also conducted two field studies using 13C and 15N labeled Andropogon gerardii leaf litter and py-OM to trace the fate of C and N losses during their decomposition in a fire affected tallgrass prairie, and understand the role of soil microarthropods in this process. I found that soil microarthropods increase the amount of leaf litter C that contributes to stabilized SOM formation during litter decomposition, by increasing litter inputs to the soil where they can be utilized by soil microbes. Finally, I found that frequent inputs of py-OM, rather than litter, due to annual burning of the tallgrass prairie alters the SOM formation process by removing relatively labile litter inputs to the soil and replacing it with py-OM that is unusable by soil microbes. Overall, my dissertation has focused on taking a mechanistic approach to understanding the process of litter and py-OM decomposition, and how their decomposition contributes to SOM formation and ecosystem CO2 fluxes. My results have helped to improve our understanding of terrestrial biogeochemistry, and the… Advisors/Committee Members: Cotrufo, M. Francesca (advisor), Wallenstein, Matthew (committee member), Knapp, Alan (committee member), Parton, William (committee member).

Subjects/Keywords: pyrogenic organic matter; soil respiration; soil ecology; dissolved organic matter; litter decomposition; microbial ecology

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Soong, J. L. (2014). Moving beyond mass loss: advancing understanding about the fate of decomposing leaf litter and pyrogenic organic matter in the mineral soil. (Doctoral Dissertation). Colorado State University. Retrieved from http://hdl.handle.net/10217/83819

Chicago Manual of Style (16^th Edition):

Soong, Jennifer L. “Moving beyond mass loss: advancing understanding about the fate of decomposing leaf litter and pyrogenic organic matter in the mineral soil.” 2014. Doctoral Dissertation, Colorado State University. Accessed March 04, 2021. http://hdl.handle.net/10217/83819.

MLA Handbook (7^th Edition):

Soong, Jennifer L. “Moving beyond mass loss: advancing understanding about the fate of decomposing leaf litter and pyrogenic organic matter in the mineral soil.” 2014. Web. 04 Mar 2021.

Vancouver:

Soong JL. Moving beyond mass loss: advancing understanding about the fate of decomposing leaf litter and pyrogenic organic matter in the mineral soil. [Internet] [Doctoral dissertation]. Colorado State University; 2014. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10217/83819.

Council of Science Editors:

Soong JL. Moving beyond mass loss: advancing understanding about the fate of decomposing leaf litter and pyrogenic organic matter in the mineral soil. [Doctoral Dissertation]. Colorado State University; 2014. Available from: http://hdl.handle.net/10217/83819

University of Saskatchewan

14. Mycock, Amanda. Characterizing organic matter and nutrient status in smelter-affected soils.

Degree: 2011, University of Saskatchewan

URL: http://hdl.handle.net/10388/ETD-2011-07-17

► Forest vegetation dieback has occurred around Flin Flon, Manitoba and Creighton, Saskatchewan since the beginning of the 20th century, when sulphide ore smelting began in… (more)

Subjects/Keywords: Soil; soil organic matter; smelter; forest dieback; carbon; nitrogen; soil quality.

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mycock, A. (2011). Characterizing organic matter and nutrient status in smelter-affected soils. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/ETD-2011-07-17

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mycock, Amanda. “Characterizing organic matter and nutrient status in smelter-affected soils.” 2011. Thesis, University of Saskatchewan. Accessed March 04, 2021. http://hdl.handle.net/10388/ETD-2011-07-17.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mycock, Amanda. “Characterizing organic matter and nutrient status in smelter-affected soils.” 2011. Web. 04 Mar 2021.

Vancouver:

Mycock A. Characterizing organic matter and nutrient status in smelter-affected soils. [Internet] [Thesis]. University of Saskatchewan; 2011. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10388/ETD-2011-07-17.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mycock A. Characterizing organic matter and nutrient status in smelter-affected soils. [Thesis]. University of Saskatchewan; 2011. Available from: http://hdl.handle.net/10388/ETD-2011-07-17

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Colorado State University

15. Leichty, Sarah I. Residue-derived carbon transformations with altered residue management in an irrigated corn system in Colorado.

Degree: MS(M.S.), Ecology, 2019, Colorado State University

URL: http://hdl.handle.net/10217/197335

► Soil plays an essential role in storing carbon (C) and nutrients regulating climate and sustaining food production. As such, it is important to understand how… (more)

▼ Soil plays an essential role in storing carbon (C) and nutrients regulating climate and sustaining food production. As such, it is important to understand how human activities affect C cycling in soil. Agricultural lands, particularly croplands, comprise some of the most managed areas of the world. We have the potential to positively impact C sequestration in croplands by understanding how residue management affects the C mineralization as well as the formation and stabilization of soil organic C (SOC). No-till (NT), which leaves residue on the surface, has been proposed as the superior residue management for building SOC due to a decreased rate of residue and existing SOC decomposition. Conventional tillage (CT), which breaks aggregates while incorporating residue into the soil, is thought to result in less SOC storage through increased residue and SOC decomposition, and soil erosion. However, NT does not always result in higher SOC storage than CT when measuring total profile stocks and the gains might not be stable in a changing climate. I studied a semi-arid, irrigated, corn system where gains in surface SOC but losses at depth had been observed because of conversion to NT. I studied the effect of altered residue management by mimicking NT and CT residue placement and soil disturbance and followed the residue-derived C into soil respiration (CO2) and physically defined SOC pools. I applied isotopically labeled (13C) residue either on the soil surface (NT) or incorporated into the soil (CT), which allowed me to track losses and transformations of residue C under different residue placement. A third treatment with surface-applied residue following soil disturbance tested the effect of disturbing aggregates during tillage. I collected soil respiration measurements and determined its isotopic composition for twelve months following residue addition to understand how residue location and soil disturbance affected the rate of total CO2 efflux, and of their component fractions (i.e., derived from residue vs. derived from soil). As reported in Chapter 2, I found that incorporated residue had higher residue-derived respiration in the first six months ("off season"), but surface-applied residue had higher residue-derived respiration during the later six months ("growing season"). Growing season respiration rates were higher and driven largely by warmer temperature and more available water (i.e. irrigation events) than in the off season. Thus, the growing season trend dictated the full year trend with surface residue more vulnerable to loss as CO2 efflux compared to incorporated residue that was likely protected from decomposition by the soil matrix presumably from either aggregation or mineral associations. Following, I tracked the fate of the remaining residue C by measuring SOC pools with varying levels of stability and report these results in Chapter 3. I harvested incorporated and surface-applied residue treatments six months after residue addition. I found that incorporated residue had more residue-derived C in… Advisors/Committee Members: Cotrufo, M. Francesca (advisor), Stewart, Catherine (advisor), Conant, Richard (committee member).

Subjects/Keywords: soil carbon; soil organic matter; tillage; soil health; irrigation; stable isotopes

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Leichty, S. I. (2019). Residue-derived carbon transformations with altered residue management in an irrigated corn system in Colorado. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/197335

Chicago Manual of Style (16^th Edition):

Leichty, Sarah I. “Residue-derived carbon transformations with altered residue management in an irrigated corn system in Colorado.” 2019. Masters Thesis, Colorado State University. Accessed March 04, 2021. http://hdl.handle.net/10217/197335.

MLA Handbook (7^th Edition):

Leichty, Sarah I. “Residue-derived carbon transformations with altered residue management in an irrigated corn system in Colorado.” 2019. Web. 04 Mar 2021.

Vancouver:

Leichty SI. Residue-derived carbon transformations with altered residue management in an irrigated corn system in Colorado. [Internet] [Masters thesis]. Colorado State University; 2019. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10217/197335.

Council of Science Editors:

Leichty SI. Residue-derived carbon transformations with altered residue management in an irrigated corn system in Colorado. [Masters Thesis]. Colorado State University; 2019. Available from: http://hdl.handle.net/10217/197335

University of Manchester

16. Ashton, Nicola Jane. Holistic characterisation of soils developed on contrasting lithologies, in a temperate climate.

Degree: PhD, 2014, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/holistic-characterisation-of-soils-developed-on-contrasting-lithologies-in-a-temperate-climate(3e0b006c-60f5-4814-8f2a-101c2b9c7bba).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.626971

► The influence of parent lithology on the development of soil biogeochemical environments and their microbial diversity is explored by characterising soil profiles with respect to… (more)

▼ The influence of parent lithology on the development of soil biogeochemical environments and their microbial diversity is explored by characterising soil profiles with respect to their mineral, solution and organic chemistry. Soil profiles were collected from a total of 17 sites, above basalt, granodiorite, shale, sandstone and limestone, across Northern Ireland. The soil system developed above basalt was examined to assess the development of soil bio-physicochemical properties and microbial diversity through the profile. These basalt soils showed two distinct horizons have developed in the previous 15’000 years, where soils from the top 20 cm of the profile were highly influenced by the interactions of soil minerals with soil organic and biological processes. In line with the observed differences in soil properties the microbial community structure varied; in the surface soils the community composition was dominated by root-associated bacteria. However the relative abundance of phyla affiliated with nutrient-limited conditions increased in samples from the base of the profile. Detailed examination of the soil profiles above granodiorite, shale, sandstone and limestone revealed large variations in soil geochemistry between profiles, reflecting the mineral geochemistry of the parent rock. Molecular analysis of SOM revealed compositional changes with depth were comparable between profiles; however TOC concentrations were consistently higher in the soil profiles above basalt suggesting greater stabilisation of SOM in these soils. The chemistry of the soil waters was not reflective of the parent rocks; however variations in soil texture, specifically the abundance of less reactive residual minerals in the sandstone and limestone soils, led to higher concentrations of soluble elements in these soils. Soil pH and DOC were found to have a large control on buffering the release of free Al, Cr and Fe ions into solution. The microbial communities in near-surface soils were similar to each other, regardless of lithology, and were dominated by Proteobacteria, Actinobacteria, and Acidobacteria. However microbial diversity shifted with depth; the abundance of Actinobacteria decreased and Nitrospirae increased, and between rock types where soils next to the basalt, shale and granodiorite bedrock contained sequences affiliated with novel Candidate Phyla AD3 and GAL15. In these soils differences in SOM composition were the main driver of the observed variation with depth, however where labile SOM was depleted, mineral and solution geochemistry may have a larger control on the community composition. To assess the influence of parent lithology on selenium mobility, soils above basalt and granodiorite were amended with sodium selenate. Under anaerobic conditions, the proportion of soluble selenate removed varied (39-77 %) depending on the sample through a combination of abiotic and microbial reduction processes. However, under aerobic conditions, larger concentrations of selenate remained in solution (79-100%).

Subjects/Keywords: 551.9; Soil; Soil Geochemistry; Soil Parent Lithology; Soil Organic Matter; Microbial Diversity; Soil Waters; Selenium

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ashton, N. J. (2014). Holistic characterisation of soils developed on contrasting lithologies, in a temperate climate. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/holistic-characterisation-of-soils-developed-on-contrasting-lithologies-in-a-temperate-climate(3e0b006c-60f5-4814-8f2a-101c2b9c7bba).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.626971

Chicago Manual of Style (16^th Edition):

Ashton, Nicola Jane. “Holistic characterisation of soils developed on contrasting lithologies, in a temperate climate.” 2014. Doctoral Dissertation, University of Manchester. Accessed March 04, 2021. https://www.research.manchester.ac.uk/portal/en/theses/holistic-characterisation-of-soils-developed-on-contrasting-lithologies-in-a-temperate-climate(3e0b006c-60f5-4814-8f2a-101c2b9c7bba).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.626971.

MLA Handbook (7^th Edition):

Ashton, Nicola Jane. “Holistic characterisation of soils developed on contrasting lithologies, in a temperate climate.” 2014. Web. 04 Mar 2021.

Vancouver:

Ashton NJ. Holistic characterisation of soils developed on contrasting lithologies, in a temperate climate. [Internet] [Doctoral dissertation]. University of Manchester; 2014. [cited 2021 Mar 04]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/holistic-characterisation-of-soils-developed-on-contrasting-lithologies-in-a-temperate-climate(3e0b006c-60f5-4814-8f2a-101c2b9c7bba).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.626971.

Council of Science Editors:

Ashton NJ. Holistic characterisation of soils developed on contrasting lithologies, in a temperate climate. [Doctoral Dissertation]. University of Manchester; 2014. Available from: https://www.research.manchester.ac.uk/portal/en/theses/holistic-characterisation-of-soils-developed-on-contrasting-lithologies-in-a-temperate-climate(3e0b006c-60f5-4814-8f2a-101c2b9c7bba).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.626971

University of California – Berkeley

17. Dane, Laura Jennifer. Soil Microorganisms as Precursors and Mediators of Soil Carbon Stailization.

Degree: Environmental Science, Policy, & Management, 2014, University of California – Berkeley

URL: http://www.escholarship.org/uc/item/6b22948f

► Soil organic matter (SOM) results from a suite of microbial and geochemical processes that in combination convert carbon (C) of biological origin to stabilized, potentially… (more)

▼ Soil organic matter (SOM) results from a suite of microbial and geochemical processes that in combination convert carbon (C) of biological origin to stabilized, potentially long-lived materials. While it is well established that soil microorganisms are involved in the conversion of plant biomass into SOM, the conversion of microbial bodies themselves to stabilized soil organic materials is not well understood. Recent studies suggest that microbial products such as polysaccharides, amino acids, fatty acids, and a number of other biomolecules of microbial origin can remain in soils for long periods of time, and that microbial bodies play a much more important role as the precursors to SOM than previously considered. In this dissertation, I examine the flow of microbial carbon in two soil types as it is assimilated into the living microbial biomass under different climate regimes, how long it remains in the living microbial biomass, and ultimately the flow of this microbial C out of the living biomass as it is respired out as CO2 or is incorporated into SOM. The influence of soil type and climate were examined because both are key drivers of soil biogeochemical processes and strongly affect organic matter stabilization in soils. In Chapter 1, I report the results of a field study conducted to understand not only whether different microbial groups preferentially assimilate carbon from different microbial sources of C, but also whether climate and edaphic characteristics alter either the assimilation of necrotic microbial carbon and/or the length of residence of this carbon within the living biomass. This study followed the fate of 13C labeled dead microbial bodies for three years after they were injected into field soils located in a Temperate mixed-conifer forest and a Tropical wet forest. The 13C was subsequently assimilated into the standing microbial biomass and ultimately lost from the biomass over a 3 year period. In general, the saprophytic microbial groups preferentially assimilated carbon from their same groups or groups with similar molecular compositions; however, only the Gram-positive bacteria in the Tropical site and Gram-positive and Gram-negative bacteria in the Temperate site demonstrated an affinity for assimilating C from dead actinobacteria. At each harvest throughout the study, the Temperate soils retained more labeled 13C from the labeled necromass groups than the Tropical soils. The faster loss of labeled carbon from the living biomass in Tropical soils may have significant implications for the relative contributions of microbial biomass to the formation of SOM. As evidenced in Chapter 3, the retention time of C in living microbial biomass may be positively correlated to the sorption of microbial C to mineral surfaces in the heavy fraction (HF) of SOM. Since the HF is generally the longest-lived SOM pool, an increase in the proportion of microbial C sorbed to mineral surfaces in the HF due to longer residence times of C in the living biomass of Temperate soils may lead to a higher proportion of…

Subjects/Keywords: Environmental science; Carbon cycling; Carbon stabilization; Soil microbiology; Soil organic matter

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dane, L. J. (2014). Soil Microorganisms as Precursors and Mediators of Soil Carbon Stailization. (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/6b22948f

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dane, Laura Jennifer. “Soil Microorganisms as Precursors and Mediators of Soil Carbon Stailization.” 2014. Thesis, University of California – Berkeley. Accessed March 04, 2021. http://www.escholarship.org/uc/item/6b22948f.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dane, Laura Jennifer. “Soil Microorganisms as Precursors and Mediators of Soil Carbon Stailization.” 2014. Web. 04 Mar 2021.

Vancouver:

Dane LJ. Soil Microorganisms as Precursors and Mediators of Soil Carbon Stailization. [Internet] [Thesis]. University of California – Berkeley; 2014. [cited 2021 Mar 04]. Available from: http://www.escholarship.org/uc/item/6b22948f.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dane LJ. Soil Microorganisms as Precursors and Mediators of Soil Carbon Stailization. [Thesis]. University of California – Berkeley; 2014. Available from: http://www.escholarship.org/uc/item/6b22948f

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Nairobi

18. Basweti, C N. Effect of organic matter quality, soil temperature and moisture on soil organic matter decomposition of a forest -cropland chronosequence .

Degree: 2009, University of Nairobi

URL: http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/18790

► Temperature sensitivity of soil carbon decomposition is a key factor in determining the response of the terrestrial carbon balance to climate change. However, the effect… (more)

Subjects/Keywords: Organic matter quality; Soil temperature; Soil moisture; Decomposition; Forest-cropland

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Basweti, C. N. (2009). Effect of organic matter quality, soil temperature and moisture on soil organic matter decomposition of a forest -cropland chronosequence . (Thesis). University of Nairobi. Retrieved from http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/18790

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Basweti, C N. “Effect of organic matter quality, soil temperature and moisture on soil organic matter decomposition of a forest -cropland chronosequence .” 2009. Thesis, University of Nairobi. Accessed March 04, 2021. http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/18790.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Basweti, C N. “Effect of organic matter quality, soil temperature and moisture on soil organic matter decomposition of a forest -cropland chronosequence .” 2009. Web. 04 Mar 2021.

Vancouver:

Basweti CN. Effect of organic matter quality, soil temperature and moisture on soil organic matter decomposition of a forest -cropland chronosequence . [Internet] [Thesis]. University of Nairobi; 2009. [cited 2021 Mar 04]. Available from: http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/18790.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Basweti CN. Effect of organic matter quality, soil temperature and moisture on soil organic matter decomposition of a forest -cropland chronosequence . [Thesis]. University of Nairobi; 2009. Available from: http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/18790

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Colorado State University

19. Bowen, Eric C. Assessing the effects of grazing and land use change on soil carbon stocks in pastures of the Virginia Blue Ridge.

Degree: MS(M.S.), Ecology, 2013, Colorado State University

URL: http://hdl.handle.net/10217/79011

► The impact of livestock on our climate and the environment has been a hot topic since the 2006 FAO report "Livestock's Long Shadow" (Steinfeld et… (more)

Subjects/Keywords: grazing; livestock; pastures; rotational grazing; soil carbon; soil organic matter

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bowen, E. C. (2013). Assessing the effects of grazing and land use change on soil carbon stocks in pastures of the Virginia Blue Ridge. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/79011

Chicago Manual of Style (16^th Edition):

Bowen, Eric C. “Assessing the effects of grazing and land use change on soil carbon stocks in pastures of the Virginia Blue Ridge.” 2013. Masters Thesis, Colorado State University. Accessed March 04, 2021. http://hdl.handle.net/10217/79011.

MLA Handbook (7^th Edition):

Bowen, Eric C. “Assessing the effects of grazing and land use change on soil carbon stocks in pastures of the Virginia Blue Ridge.” 2013. Web. 04 Mar 2021.

Vancouver:

Bowen EC. Assessing the effects of grazing and land use change on soil carbon stocks in pastures of the Virginia Blue Ridge. [Internet] [Masters thesis]. Colorado State University; 2013. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10217/79011.

Council of Science Editors:

Bowen EC. Assessing the effects of grazing and land use change on soil carbon stocks in pastures of the Virginia Blue Ridge. [Masters Thesis]. Colorado State University; 2013. Available from: http://hdl.handle.net/10217/79011

University of Adelaide

20. Mavi, Manpreet Singh. Dissolved organic matter dynamics and microbial activity in salt-affected soils.

Degree: 2012, University of Adelaide

URL: http://hdl.handle.net/2440/78914

► Salt-affected soils (comprising saline and sodic soils) contain excessive amounts of salts and cover over 10 % of the world’s arable land. They are a… (more)

Subjects/Keywords: dissolved organic matter; soil respiration; salinity; sodicity; soil texture

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mavi, M. S. (2012). Dissolved organic matter dynamics and microbial activity in salt-affected soils. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/78914

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mavi, Manpreet Singh. “Dissolved organic matter dynamics and microbial activity in salt-affected soils.” 2012. Thesis, University of Adelaide. Accessed March 04, 2021. http://hdl.handle.net/2440/78914.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mavi, Manpreet Singh. “Dissolved organic matter dynamics and microbial activity in salt-affected soils.” 2012. Web. 04 Mar 2021.

Vancouver:

Mavi MS. Dissolved organic matter dynamics and microbial activity in salt-affected soils. [Internet] [Thesis]. University of Adelaide; 2012. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/2440/78914.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mavi MS. Dissolved organic matter dynamics and microbial activity in salt-affected soils. [Thesis]. University of Adelaide; 2012. Available from: http://hdl.handle.net/2440/78914

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Edinburgh

21. Burns, Nancy Rosalind. Soil organic matter stability and the temperature sensitivity of soil respiration.

Degree: PhD, 2012, University of Edinburgh

URL: http://hdl.handle.net/1842/9922

► Soil respiration is an important source of atmospheric CO2, with the potential for large positive feedbacks with global warming. The size of these feedbacks will… (more)

▼ Soil respiration is an important source of atmospheric CO2, with the potential for large positive feedbacks with global warming. The size of these feedbacks will depend on the relative sensitivity to temperature of very large global pools of highly stable soil organic matter (SOM), with residence times of centuries or longer. Conflicting evidence exists as to the relationships between temperature sensitivity of respiration and stability of SOM, as well as the temperature sensitivity of individual stabilisation mechanisms. This PhD considers the relationship between different stabilisation mechanisms and the temperature sensitivity of SOM decomposition. I used physical fractionation to isolate SOM pools with a variety of turnover rates, from decadal to centennially cycling SOM, in a peaty gley topsoil from Harwood Forest. Mean residence times of SOM as determined by 14C dating was most strongly affected by depth, providing stability on a millienial scale, while OM-mineral associations and physical protection of aggregates provided stability to around 500 years. Chemical characteristics of organic material in these fractions and whole soils (13C CP-MAS NMR spectroscopy, mass spectrometry, FTIR spectroscopy, thermogravimetric analysis, ICP-OES) indicated the relative contribution of different stabilisation mechanisms to the longevity of each of these fractions. Two long-term incubations of isolated physical fractions and soil horizons at different temperatures provided information about the actual resistance to decomposition in each SOM pool, as well as the temperature sensitivity of respiration from different pools. Naturally 13C-labelled labile substrate additions to the mineral and organic horizons compared the resistance to priming by labile and recalcitrant substrates. Manipulation of soil pore water was investigated as a method for isolating the respiration of SOM from physically occluded positions within the soil architecture. Contadictory lines of evidence emerged on the relative stability of different SOM pools from 14C dating, incubation experiments and chemical characterisation of indicators of stability. This led to the interpretation that physical aggregate protection primarily controls SOM stability within topsoils, while mineral and Fe oxide stability provides more lasting stability in the mineral horizon. Less humified and younger SOM was found to have a higher sensitivity to temperature than respiration from well-humified pools, in contrast to predictions from thermodynamics.

Subjects/Keywords: 631.4; soil respiration; soil organic matter quality; stable isotopes; temperature sensitivity

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Burns, N. R. (2012). Soil organic matter stability and the temperature sensitivity of soil respiration. (Doctoral Dissertation). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/9922

Chicago Manual of Style (16^th Edition):

Burns, Nancy Rosalind. “Soil organic matter stability and the temperature sensitivity of soil respiration.” 2012. Doctoral Dissertation, University of Edinburgh. Accessed March 04, 2021. http://hdl.handle.net/1842/9922.

MLA Handbook (7^th Edition):

Burns, Nancy Rosalind. “Soil organic matter stability and the temperature sensitivity of soil respiration.” 2012. Web. 04 Mar 2021.

Vancouver:

Burns NR. Soil organic matter stability and the temperature sensitivity of soil respiration. [Internet] [Doctoral dissertation]. University of Edinburgh; 2012. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1842/9922.

Council of Science Editors:

Burns NR. Soil organic matter stability and the temperature sensitivity of soil respiration. [Doctoral Dissertation]. University of Edinburgh; 2012. Available from: http://hdl.handle.net/1842/9922

University of Toledo

22. McMillan, Cameron Kyle. Do the availability and accessibility of soil saccharides and nutrients vary with the phenology of Acer rubrum and Lonicera maackii?.

Degree: MS, Biology (Ecology), 2015, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1492775083219861

► Stable soil organic carbon (SOC) is a globally important carbon (C) pool with the potential to significantly alter atmospheric greenhouse gas concentrations, and it is… (more)

▼ Stable soil organic carbon (SOC) is a globally important carbon (C) pool with the potential to significantly alter atmospheric greenhouse gas concentrations, and it is believed to originate primarily from microbial necromass. However, we are not always capable of accurately predicting the magnitude and occasionally the direction of C fluxes into and out of the soil, in part due to a lack of understanding of how C moves from plants through the microbial community. C moves from the atmosphere into the soil primarily through plant uptake and incorporation followed by senescence and decomposition, or by exudation directly from roots, which especially stimulates production of readily stabilized microbial biomass in mineral soils. Root exudation rates depend on the plant species, but variations among plant species in the timing and rate of exudation have not yet been fully characterized. The primary question this study addresses is: How different are concentrations of root exudates for plant species with varying phenology? We hypothesized that plants varying in seasonal leaf expansion/senescence times also vary in seasonal concentrations of root exudation because of the difference in the timing of leaf presence and C fixation. To test this hypothesis, we measured root exudation between two species with varying leaf expansion and senescence times from April-December 2015 by measuring soil pore water saccharides as a proxy for root exudation. We also measured nitrate, ammonium, and phosphate concentrations in soil pore water and 0.5 M K2SO4 extracts to determine their distribution within the soil matrix. We observed microbial responses to root exudation by measuring soil microbial respiration, biomass, and ecoenzyme (enzymes existing/functioning outside of cells) activities. Two woody plants with different light acquisition strategies were chosen within the same temperate deciduous forest stand and soil type (coarse-loamy, mixed, nonacid, mesic Aeric Haplaquepts): Honeysuckle (Lonicera maackii), whose leaves expand early and senesces late, and red maple (Acer rubrum), which has its leaves for a much shorter time but obtains more light and shades L. maackii when its canopy is open due to its height. These were compared with plant-free control plots that were trenched in order to reduce root inputs. Saccharide concentrations varied less in soil pore water than expected, and did not track leaf expansion and senescence as predicted, with the exception of May 18, when saccharide concentrations significantly increased in L. maackii soils just before leaf expansion was complete, at which time the L. maackii would become maximally shaded by the A. rubrum canopy (A. rubrum leaf expansion was complete one week later). Soil microbial biomass and activity also varied little between the two plant species, but all ecoenzyme activities varied significantly by date due to a decrease in December, apparently associated with seasonal temperature decline. Furthermore, although leaf litter was removed, the legacy of L. maackii’s high quality… Advisors/Committee Members: Weintraub, Michael (Committee Chair).

Subjects/Keywords: Ecology; Soil Sciences; Soil organic matter, saccharides, reducing sugars, spatially inaccessible

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

McMillan, C. K. (2015). Do the availability and accessibility of soil saccharides and nutrients vary with the phenology of Acer rubrum and Lonicera maackii?. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1492775083219861

Chicago Manual of Style (16^th Edition):

McMillan, Cameron Kyle. “Do the availability and accessibility of soil saccharides and nutrients vary with the phenology of Acer rubrum and Lonicera maackii?.” 2015. Masters Thesis, University of Toledo. Accessed March 04, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1492775083219861.

MLA Handbook (7^th Edition):

McMillan, Cameron Kyle. “Do the availability and accessibility of soil saccharides and nutrients vary with the phenology of Acer rubrum and Lonicera maackii?.” 2015. Web. 04 Mar 2021.

Vancouver:

McMillan CK. Do the availability and accessibility of soil saccharides and nutrients vary with the phenology of Acer rubrum and Lonicera maackii?. [Internet] [Masters thesis]. University of Toledo; 2015. [cited 2021 Mar 04]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1492775083219861.

Council of Science Editors:

McMillan CK. Do the availability and accessibility of soil saccharides and nutrients vary with the phenology of Acer rubrum and Lonicera maackii?. [Masters Thesis]. University of Toledo; 2015. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1492775083219861

University of Alberta

23. Norris, Charlotte E. Soil organic matter cycling in novel and natural boreal forest ecosystems.

Degree: PhD, Department of Renewable Resources, 2013, University of Alberta

URL: https://era.library.ualberta.ca/files/hx11xf74r

► The western boreal forest of Canada, where the upland regions are dominated by stands of aspen (Populus tremuloides Michx.) and spruce (Picea glauca (Moench) Voss),… (more)

▼ The western boreal forest of Canada, where the upland regions are dominated by stands of aspen (Populus tremuloides Michx.) and spruce (Picea glauca (Moench) Voss), is now home to novel ecosystems, i.e.; ecosystems composed of reclaimed stands formed from trees planted on constructed anthropogenic soils. This study set out to determine if soils from these natural and novel ecosystems differed in terms of their biogeochemical functioning. Using a multi-faceted approach this study examined several ecosystem function variables linked to soil organic matter composition, microbial communities and nitrogen fluxes. A survey of 42 sites showed that soil n-alkanes, biomarkers of vegetation inputs, were more concentrated and had distinct signatures in natural compared to novel ecosystems. Mineral soils from reclaimed stands, natural aspen and spruce stands showed a distinct microbial community structure as was demonstrated using phospholipid fatty acids (PLFAs) as microbial biomarkers following addition of 13C-glucose in a laboratory incubation. Further probing by compound specific analysis (CSA) of the 13C-enriched PLFAs determined that microbial incorporation of 13C-glucose was different among soils. Solid-state nuclear magnetic resonance characterization of double-labeled (13C, 15N) aspen leaves and roots generated for tracer studies confirmed that isotopic enrichment across biopolymers and tissues was time dependent. In a subsequent field incubation, where the labeled aspen leaf litter was added to the forest floors of aspen and spruce stands, soil microorganisms maintained an active nitrogen cycle between fresh litter and live vegetation at both stands, yet remained structurally distinct. However, CSA indicated overlap in the 13C enrichment of some PLFA biomarkers between stands. Finally, the addition of 15N labelled aspen leaf litter to reclaimed and natural forest stands demonstrated the importance of vegetation inputs not only as a source of nitrogen for growing vegetation but also as a way to improve soil moisture and soil microbial biomass on all sites. Cumulatively, these results not only enhance our understanding of organic matter cycling in natural and novel boreal forest ecosystems but, more importantly, they also provide results on conceptual ideas to guide future research.

Subjects/Keywords: novel ecosystem; boreal forest; soil organic matter; soil science

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Norris, C. E. (2013). Soil organic matter cycling in novel and natural boreal forest ecosystems. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/hx11xf74r

Chicago Manual of Style (16^th Edition):

Norris, Charlotte E. “Soil organic matter cycling in novel and natural boreal forest ecosystems.” 2013. Doctoral Dissertation, University of Alberta. Accessed March 04, 2021. https://era.library.ualberta.ca/files/hx11xf74r.

MLA Handbook (7^th Edition):

Norris, Charlotte E. “Soil organic matter cycling in novel and natural boreal forest ecosystems.” 2013. Web. 04 Mar 2021.

Vancouver:

Norris CE. Soil organic matter cycling in novel and natural boreal forest ecosystems. [Internet] [Doctoral dissertation]. University of Alberta; 2013. [cited 2021 Mar 04]. Available from: https://era.library.ualberta.ca/files/hx11xf74r.

Council of Science Editors:

Norris CE. Soil organic matter cycling in novel and natural boreal forest ecosystems. [Doctoral Dissertation]. University of Alberta; 2013. Available from: https://era.library.ualberta.ca/files/hx11xf74r

Iowa State University

24. Khaledian, Yones. The application of machine learning algorithms in predicting soil organic carbon/matter.

Degree: 2020, Iowa State University

URL: https://lib.dr.iastate.edu/etd/18024

► Digital soil mapping (DSM) increasingly makes use of machine learning algorithms to identify relationships between soil properties and multiple covariates that can be detected across… (more)

Subjects/Keywords: Digital Soil Mapping; Machine Learning; Optimized Sampling Design; Soil Organic Matter

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Khaledian, Y. (2020). The application of machine learning algorithms in predicting soil organic carbon/matter. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/18024

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Khaledian, Yones. “The application of machine learning algorithms in predicting soil organic carbon/matter.” 2020. Thesis, Iowa State University. Accessed March 04, 2021. https://lib.dr.iastate.edu/etd/18024.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Khaledian, Yones. “The application of machine learning algorithms in predicting soil organic carbon/matter.” 2020. Web. 04 Mar 2021.

Vancouver:

Khaledian Y. The application of machine learning algorithms in predicting soil organic carbon/matter. [Internet] [Thesis]. Iowa State University; 2020. [cited 2021 Mar 04]. Available from: https://lib.dr.iastate.edu/etd/18024.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Khaledian Y. The application of machine learning algorithms in predicting soil organic carbon/matter. [Thesis]. Iowa State University; 2020. Available from: https://lib.dr.iastate.edu/etd/18024

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toronto

25. Mitchell, Perry Joseph. The Fate of Organic Matter in Biochar-amended Soil.

Degree: PhD, 2016, University of Toronto

URL: http://hdl.handle.net/1807/92663

►

Biochar, an aromatic carbon-rich biomass pyrolysis product, has been proposed as a soil amendment to enhance soil properties and fertility. Biochar production also converts labile… (more)

▼

Biochar, an aromatic carbon-rich biomass pyrolysis product, has been proposed as a soil amendment to enhance soil properties and fertility. Biochar production also converts labile biomass carbon to a recalcitrant aromatic form, slowing CO2 emissions from biomass decomposition. However, biochar may stimulate soil microbial activity, potentially enhancing soil organic matter (OM) degradation. A laboratory incubation study was conducted to assess biochar-induced changes in microbial activity and soil OM molecular composition in a temperate forest soil using biomarker and nuclear magnetic resonance (NMR) techniques. Increased soil bacterial activity and enhanced degradation of plant waxes and polysaccharides were detected after 24 weeks, while lignin was more degraded after 32 weeks. NMR analysis of water- and base-extractable OM showed a reduction of labile components and an accumulation of recalcitrant soil OM constituents. The laboratory findings were tested at the field-scale via a three-year amendment study which examined changes in soil microbial activity and native OM composition following biochar, phosphorus (P) and biochar + P addition. P fertilization stimulated soil bacterial activity, whereas biochar and biochar + P addition increased both bacterial and fungal activity and shifted the soil microbial community toward fungi. P fertilization induced soil priming, resulting in an accumulation of primarily recalcitrant OM. Biochar and biochar + P shifted the soil OM composition toward a greater proportion of aliphatic lipids and lignin and a reduction in carbohydrates. The microbial community and native OM compositional shifts observed with biochar amendment may alter soil OM turnover and nutrient cycling rates in the long-term. Higher microbial activity following biochar addition may increase the production of dissolved organic matter (DOM) in soil. The role of OM-OM interactions in DOM sorption and layering on organo-clay complexes was examined through the repeated sorption of DOM onto three minerals with contrasting properties (kaolinite, montmorillonite and gibbsite). DOM sorption was initially controlled by mineral properties, but with increased DOM loading, OM-OM interactions also influenced the composition and concentration of DOM sorbed. Aliphatic-aliphatic and aromatic-aliphatic interactions were observed for organo-clay complexes containing all three minerals, and may represent important mechanisms by which DOM sorbs to minerals with diverse properties.

2018-11-30 00:00:00

Advisors/Committee Members: Simpson, Myrna J, Chemistry.

Subjects/Keywords: biochar; biomarker; clay mineral; organic geochemistry; organic matter; soil; 0486

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mitchell, P. J. (2016). The Fate of Organic Matter in Biochar-amended Soil. (Doctoral Dissertation). University of Toronto. Retrieved from http://hdl.handle.net/1807/92663

Chicago Manual of Style (16^th Edition):

Mitchell, Perry Joseph. “The Fate of Organic Matter in Biochar-amended Soil.” 2016. Doctoral Dissertation, University of Toronto. Accessed March 04, 2021. http://hdl.handle.net/1807/92663.

MLA Handbook (7^th Edition):

Mitchell, Perry Joseph. “The Fate of Organic Matter in Biochar-amended Soil.” 2016. Web. 04 Mar 2021.

Vancouver:

Mitchell PJ. The Fate of Organic Matter in Biochar-amended Soil. [Internet] [Doctoral dissertation]. University of Toronto; 2016. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1807/92663.

Council of Science Editors:

Mitchell PJ. The Fate of Organic Matter in Biochar-amended Soil. [Doctoral Dissertation]. University of Toronto; 2016. Available from: http://hdl.handle.net/1807/92663

University of Minnesota

26. Liebman, Alexander. Legumes and soil organic matter transformations in upper Midwest agroecosystems.

Degree: MS, Applied Plant Sciences, 2018, University of Minnesota

URL: http://hdl.handle.net/11299/200129

► Cover crops are an agroecological approach that can increase ecosystem service provisioning, reducing erosion, providing spatial and temporal biotic diversification, and increasing soil organic matter… (more)

▼ Cover crops are an agroecological approach that can increase ecosystem service provisioning, reducing erosion, providing spatial and temporal biotic diversification, and increasing soil organic matter (SOM). However, implementation of cover crops in the upper Midwest is limited by short growing seasons and harsh winters with variable temperatures and snowfall. Our objective was to explore the potential of winter annual legume cover crops to stabilize and augment soil C and organic N stocks in upper Midwest agricultural systems in which cover crop biomass production is quite limited, and without major impacts on crop yield. We compared hairy vetch (VET), winter rye (RYE), red clover (CLO), hairy vetch/rye biculture (MIX), and bare-ground control (NOCC), planted in a randomized complete block design at two University of Minnesota Research and Outreach Centers in southwest (LAMB) and north-central (GR) Minnesota. Cover crops were established in fall and terminated in spring prior to sweet corn planting. To measure linked soil C and N dynamics, we determined microbial biomass C (MB-C), permanganate-oxidizable C (POX-C), size-fractionated particulate organic matter C and N (POM-C and POM-N), extractable soil N (EXT-N) and potentially mineralizable N (PMN). We hypothesized that 1) MIX has intermediate biomass and biomass N levels, compared to legumes (high N, low biomass) and RYE (low N, high biomass) monocrops 2) MIX treatment increases both soil C and N, legumes primarily increase N and RYE influences labile C parameters, and 3) RYE exhibit sweet corn yield declines due to low N and high residue. Our results indicate winter annual legume cover crops are a viable tool for increasing soil N but had limited impact on labile SOM parameters. Vetch biomass exceeded 2.00 Mg dry matter ha-1, resulting in > 80 kg N ha-1. Extractable N increased after cover crop termination approaching 25 mg N kg soil-1 in VET. Post-termination PMN increased at GR Y1 and LAMB Y2, to 30-65 mg N kg soil-1, from baseline values of ~ 20 mg N kg soil -1 pre-termination. Yet soil N results displayed major site differences, with PMN declining in LAMB Y1 and GR Y2 pre-termination to post-termination. Soil C results were variable, indicating significant effect of sampling time and environment yet no treatment differences for MB-C or POX-C. However, MB-C was correlated with PMN (R2= 0.24, p = 0.002), indicating labile C may be an effective indicator of N dynamics. Corn yields were highest in LAMB 2015, VET and MIX exceeded 13 Mg ha-1 and out-yielded RYE (~ 8 Mg ha-1). Our project suggests winter annual legume cover crops may achieve multiple ecosystem services including winter soil coverage, SOM development, and coupled C and N cycling.

Subjects/Keywords: Cover cropping; Organic agriculture; Soil organic matter; Sweet corn

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Liebman, A. (2018). Legumes and soil organic matter transformations in upper Midwest agroecosystems. (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/200129

Chicago Manual of Style (16^th Edition):

Liebman, Alexander. “Legumes and soil organic matter transformations in upper Midwest agroecosystems.” 2018. Masters Thesis, University of Minnesota. Accessed March 04, 2021. http://hdl.handle.net/11299/200129.

MLA Handbook (7^th Edition):

Liebman, Alexander. “Legumes and soil organic matter transformations in upper Midwest agroecosystems.” 2018. Web. 04 Mar 2021.

Vancouver:

Liebman A. Legumes and soil organic matter transformations in upper Midwest agroecosystems. [Internet] [Masters thesis]. University of Minnesota; 2018. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/11299/200129.

Council of Science Editors:

Liebman A. Legumes and soil organic matter transformations in upper Midwest agroecosystems. [Masters Thesis]. University of Minnesota; 2018. Available from: http://hdl.handle.net/11299/200129

Royal Roads University

27. Munro, Charles. Native and exotic tree leaves contributions to formation of different soil organic matter pools .

Degree: 2018, Royal Roads University

URL: http://hdl.handle.net/10613/5539

► Deforestation around the world contributes to climate change and soil quality loss. The Atlantic Forest in Brazil has been deforested by 93%. Leaf litter from… (more)

Subjects/Keywords: Atlantic Rainforest; Isotopic Dilutiuon; Minas Gerais; Soil Organic Carbon; Soil Organic Matter

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Munro, C. (2018). Native and exotic tree leaves contributions to formation of different soil organic matter pools . (Thesis). Royal Roads University. Retrieved from http://hdl.handle.net/10613/5539

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Munro, Charles. “Native and exotic tree leaves contributions to formation of different soil organic matter pools .” 2018. Thesis, Royal Roads University. Accessed March 04, 2021. http://hdl.handle.net/10613/5539.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Munro, Charles. “Native and exotic tree leaves contributions to formation of different soil organic matter pools .” 2018. Web. 04 Mar 2021.

Vancouver:

Munro C. Native and exotic tree leaves contributions to formation of different soil organic matter pools . [Internet] [Thesis]. Royal Roads University; 2018. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10613/5539.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Munro C. Native and exotic tree leaves contributions to formation of different soil organic matter pools . [Thesis]. Royal Roads University; 2018. Available from: http://hdl.handle.net/10613/5539

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Guelph

28. Graham, Jordan. Influence of herbaceous biomass crops on soil organic carbon in southern Ontario soils.

Degree: MS, School of Environmental Sciences, 2018, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/12956

► Nineteen farms growing herbaceous biomass crops, switchgrass (Panicum virgatum) and Miscanthus (Miscanthus spp.), were sampled for soil organic carbon (SOC) across Ontario, Canada in 2016,… (more)

Subjects/Keywords: Soil organic carbon; soil organic matter; swtichgrass; miscanthus; climate change; biomass crops; land-use change

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Graham, J. (2018). Influence of herbaceous biomass crops on soil organic carbon in southern Ontario soils. (Masters Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/12956

Chicago Manual of Style (16^th Edition):

Graham, Jordan. “Influence of herbaceous biomass crops on soil organic carbon in southern Ontario soils.” 2018. Masters Thesis, University of Guelph. Accessed March 04, 2021. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/12956.

MLA Handbook (7^th Edition):

Graham, Jordan. “Influence of herbaceous biomass crops on soil organic carbon in southern Ontario soils.” 2018. Web. 04 Mar 2021.

Vancouver:

Graham J. Influence of herbaceous biomass crops on soil organic carbon in southern Ontario soils. [Internet] [Masters thesis]. University of Guelph; 2018. [cited 2021 Mar 04]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/12956.

Council of Science Editors:

Graham J. Influence of herbaceous biomass crops on soil organic carbon in southern Ontario soils. [Masters Thesis]. University of Guelph; 2018. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/12956

University of Georgia

29. Jacobsen, Krista Linnae. Turning red clay brown.

Degree: 2014, University of Georgia

URL: http://hdl.handle.net/10724/24939

► In the Southeastern United States, a combination of climatic and management factors have severely degraded soils over the past 200 years. Restoration of soil organic… (more)

Subjects/Keywords: Alley cropping; soil organic matter; organic agriculture; conservation tillage; soil restoration; enterprise budget; CENTURY model

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jacobsen, K. L. (2014). Turning red clay brown. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/24939

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jacobsen, Krista Linnae. “Turning red clay brown.” 2014. Thesis, University of Georgia. Accessed March 04, 2021. http://hdl.handle.net/10724/24939.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jacobsen, Krista Linnae. “Turning red clay brown.” 2014. Web. 04 Mar 2021.

Vancouver:

Jacobsen KL. Turning red clay brown. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10724/24939.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jacobsen KL. Turning red clay brown. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/24939

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Minnesota

30. Wackett, Adrian. Arctic worming: Human-facilitated earthworm invasion transforms soil organic matter budgets and pools in Fennoscandian forests.

Degree: MS, Land and Atmospheric Science, 2018, University of Minnesota

URL: http://hdl.handle.net/11299/218672

► Earth’s high latitude ecosystems are already under dire threat from climate warming, permafrost thaw, and intensifying natural resource exploitation. In addition to these ongoing concerns,… (more)

▼ Earth’s high latitude ecosystems are already under dire threat from climate warming, permafrost thaw, and intensifying natural resource exploitation. In addition to these ongoing concerns, accelerating urbanization, agricultural expansion, and greater opportunities for recreation in high-latitude regions are likely to introduce a less conspicuous but potentially potent threat: non-native geoengineeing earthworms. Earthworms were eradicated from northern N. America (including Minnesota) during the last glaciation, and it is now established that humans are (re-) introducing exotic earthworm species into these forests with dramatic consequences on soil and ecosystem functioning. However, their invasiveness and capacity to modify high-latitude boreal and arctic forests like those in Fennoscandia remains largely unknown. Here I explore two inter-related hypotheses concerning earthworms and soils in Fennoscandian forests: H1) despite their different human history and proximity to the native range of Lumbricidae earthworms (Southern and Central Europe), I predicted that Pleistocene glaciations also extirpated earthworms from Fennoscandia, suggesting that European earthworms (if present) are also non-native and invasive in these landscapes; and H2) if introduced by humans, the invasive earthworms transform Fennoscandian forest soil morphologies and soil organic matter (SOM) dynamics by removing thick organic layers at the forest floor and forming A-horizon (mineral topsoil) in their wake. To address H1, I tested a series of sub-hypotheses stating that: 1) earthworms did not colonize the Fennoscandian landscape via dispersal by brackish seawater, nor were they introduced by early indigenous peoples (Sami) who followed the retreating glaciers into northern Fennoscandia; and 2) earthworms are spreading into Fennoscandian forests from ‘worm point sources’ created by modern human-mediated dispersal vectors such as farming, fishing, gardening, and logging (among others). Although I could not dispel the possibility that small epigeic-type earthworms may have entered the Fennoscandian landscape considerably earlier via water-mediated dispersal and/or by ‘hitch-hiking’ along with Sami settlers, I found that more impactful ‘geoengineering’ species are only present in arctic landscapes associated with more modern (i.e. last two centuries) human disturbance (supporting H1) and are radiating outward from these anthropogenic point sources into virgin arctic and boreal forests. Furthermore, in line with H2, expansion of these geoengineers into adjacent forests consistently induced changes to forest soil morphologies and nutrient cycling regimes, including rapid reduction of the SOM pool in organic horizons and re-allocation of this SOM into mineral horizons: wherein it is sorbed onto mineral surfaces and/or occluded within aggregates. This belowground transformation likely has significant aboveground consequences as well as implications for the long-term carbon balance of boreal and arctic ecosystems, which store more than half (~ 53%) of…

Subjects/Keywords: arctic; bioturbation; Earthworm invasion; ecosystem engineers; soil organic carbon; soil organic matter

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wackett, A. (2018). Arctic worming: Human-facilitated earthworm invasion transforms soil organic matter budgets and pools in Fennoscandian forests. (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/218672

Chicago Manual of Style (16^th Edition):

Wackett, Adrian. “Arctic worming: Human-facilitated earthworm invasion transforms soil organic matter budgets and pools in Fennoscandian forests.” 2018. Masters Thesis, University of Minnesota. Accessed March 04, 2021. http://hdl.handle.net/11299/218672.

MLA Handbook (7^th Edition):

Wackett, Adrian. “Arctic worming: Human-facilitated earthworm invasion transforms soil organic matter budgets and pools in Fennoscandian forests.” 2018. Web. 04 Mar 2021.

Vancouver:

Wackett A. Arctic worming: Human-facilitated earthworm invasion transforms soil organic matter budgets and pools in Fennoscandian forests. [Internet] [Masters thesis]. University of Minnesota; 2018. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/11299/218672.

Council of Science Editors:

Wackett A. Arctic worming: Human-facilitated earthworm invasion transforms soil organic matter budgets and pools in Fennoscandian forests. [Masters Thesis]. University of Minnesota; 2018. Available from: http://hdl.handle.net/11299/218672

Open Access Theses and Dissertations