{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/110779"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/110779","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"The assessment of physicochemical factors influencing phosphorus mineralization and immobilization in an Illinois floodplain soil","abstract":"Persistent losses of phosphorus (P) from soil to aquatic environments, provoked by human activity, degrade downstream water quality. Thus, it is critical to gain a deeper understanding of the biogeochemical processes that govern P bioavailability/mobility in the soil, including P mineralization and immobilization. Through microbially mediated immobilization, inorganic P is transformed into an organic form while during mineralization, organic P is converted into a labile, inorganic form, which is more susceptible to loss. In this study, the occurrence of mineralization/immobilization in Illinois floodplain soils was thoroughly examined. First, a comprehensive examination of mineralization and immobilization parameters in a floodplain and its adjacent upland was carried out. Due to higher total organic P and microbial P relative to the upland soil, it was concluded that the floodplain soil buffers P in part through microbial immobilization (Chapter 2). However, the degree of P immobilization varied throughout the floodplain, which motivated further investigation of physicochemical parameters that may be influencing the process, namely organic C and inorganic N. The following objectives were subsequently developed: 1) to evaluate the influence of native leaf residue on P reaction dynamics as a function of the C composition of the residue and the soil organic C:P ratio and 2) to investigate if the P mineralization rates vary as a function of inorganic nitrogen (N) species. Separately, floodplain soils were amended with 1) three species of native leaf residue with varying C compositions and 2) nitrate (NO3-N) and ammonium (NH4-N). Phosphorus mineralization/immobilization dynamics (i.e., wet chemistry analysis and NMR spectroscopy) were examined during long-term laboratory incubations. In the C study, residues with low aromaticity promoted P mineralization, and residues with high aromaticity and hydrophobicity led to P immobilization (Chapter 3). In the N study, NH4-N was more effective at boosting phosphatase activity and P mineralization rates than NO3-N (Chapter 4). It was concluded that both C and N have a large influence on P mineralization and immobilization in floodplain soil. On one hand, the incorporation of vegetation that specifically produces litter with more recalcitrant C compounds could optimize soil P sequestration in constructed floodplain buffers and improve downstream water quality. On the other hand, excess inorganic N, especially NH4-N, could promote mineralization and reduce P sequestration. These conclusions should be considered in the management of floodplains, wetlands, and P rich agricultural soils to minimize the release of P to aquatic environments.","abstract_html":"Persistent losses of phosphorus (P) from soil to aquatic environments, provoked by human activity, degrade downstream water quality. Thus, it is critical to gain a deeper understanding of the biogeochemical processes that govern P bioavailability/mobility in the soil, including P mineralization and immobilization. Through microbially mediated immobilization, inorganic P is transformed into an organic form while during mineralization, organic P is converted into a labile, inorganic form, which is more susceptible to loss. In this study, the occurrence of mineralization/immobilization in Illinois floodplain soils was thoroughly examined. First, a comprehensive examination of mineralization and immobilization parameters in a floodplain and its adjacent upland was carried out. Due to higher total organic P and microbial P relative to the upland soil, it was concluded that the floodplain soil buffers P in part through microbial immobilization (Chapter 2). However, the degree of P immobilization varied throughout the floodplain, which motivated further investigation of physicochemical parameters that may be influencing the process, namely organic C and inorganic N. The following objectives were subsequently developed: 1) to evaluate the influence of native leaf residue on P reaction dynamics as a function of the C composition of the residue and the soil organic C:P ratio and 2) to investigate if the P mineralization rates vary as a function of inorganic nitrogen (N) species. Separately, floodplain soils were amended with 1) three species of native leaf residue with varying C compositions and 2) nitrate (NO3-N) and ammonium (NH4-N). Phosphorus mineralization/immobilization dynamics (i.e., wet chemistry analysis and NMR spectroscopy) were examined during long-term laboratory incubations. In the C study, residues with low aromaticity promoted P mineralization, and residues with high aromaticity and hydrophobicity led to P immobilization (Chapter 3). In the N study, NH4-N was more effective at boosting phosphatase activity and P mineralization rates than NO3-N (Chapter 4). It was concluded that both C and N have a large influence on P mineralization and immobilization in floodplain soil. On one hand, the incorporation of vegetation that specifically produces litter with more recalcitrant C compounds could optimize soil P sequestration in constructed floodplain buffers and improve downstream water quality. On the other hand, excess inorganic N, especially NH4-N, could promote mineralization and reduce P sequestration. These conclusions should be considered in the management of floodplains, wetlands, and P rich agricultural soils to minimize the release of P to aquatic environments.","abstract_has_math":false,"creators":["Arenberg, Mary"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Natural Res & Env Sciences","degree_department":null,"school":null,"contributors":["Arai, Yuji","Mulvaney, Richard","Matthews, Jeffrey W","Chu, Maria L"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2021,"date_issued":"2021-09-17T04:03:59Z","date_published":"2021-09-17T04:03:59Z","updated_at":"2026-07-22T22:24:52Z","subjects":["Soil Chemistry","Nutrient Cycling","Biogeochemistry","Phosphorus","Mineralization"],"languages":["en"],"rights":["Copyright 2021 Mary Arenberg"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/110779","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Arai, Yuji","Mulvaney, Richard","Matthews, Jeffrey W","Chu, Maria L"]},{"key":"dc:creator","label":"Author","values":["Arenberg, Mary"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2021-09-17T04:03:59Z","2023-09-17T04:07:01Z","2021-03-18","2021-05"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Natural Res & Env Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Soil Chemistry","Nutrient Cycling","Biogeochemistry","Phosphorus","Mineralization"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2021 Mary Arenberg"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/110779"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Persistent losses of phosphorus (P) from soil to aquatic environments, provoked by human activity, degrade downstream water quality. Thus, it is critical to gain a deeper understanding of the biogeochemical processes that govern P bioavailability/mobility in the soil, including P mineralization and immobilization. Through microbially mediated immobilization, inorganic P is transformed into an organic form while during mineralization, organic P is converted into a labile, inorganic form, which is more susceptible to loss. In this study, the occurrence of mineralization/immobilization in Illinois floodplain soils was thoroughly examined. First, a comprehensive examination of mineralization and immobilization parameters in a floodplain and its adjacent upland was carried out. Due to higher total organic P and microbial P relative to the upland soil, it was concluded that the floodplain soil buffers P in part through microbial immobilization (Chapter 2). However, the degree of P immobilization varied throughout the floodplain, which motivated further investigation of physicochemical parameters that may be influencing the process, namely organic C and inorganic N. The following objectives were subsequently developed: 1) to evaluate the influence of native leaf residue on P reaction dynamics as a function of the C composition of the residue and the soil organic C:P ratio and 2) to investigate if the P mineralization rates vary as a function of inorganic nitrogen (N) species. Separately, floodplain soils were amended with 1) three species of native leaf residue with varying C compositions and 2) nitrate (NO3-N) and ammonium (NH4-N). Phosphorus mineralization/immobilization dynamics (i.e., wet chemistry analysis and NMR spectroscopy) were examined during long-term laboratory incubations. In the C study, residues with low aromaticity promoted P mineralization, and residues with high aromaticity and hydrophobicity led to P immobilization (Chapter 3). In the N study, NH4-N was more effective at boosting phosphatase activity and P mineralization rates than NO3-N (Chapter 4). It was concluded that both C and N have a large influence on P mineralization and immobilization in floodplain soil. On one hand, the incorporation of vegetation that specifically produces litter with more recalcitrant C compounds could optimize soil P sequestration in constructed floodplain buffers and improve downstream water quality. On the other hand, excess inorganic N, especially NH4-N, could promote mineralization and reduce P sequestration. These conclusions should be considered in the management of floodplains, wetlands, and P rich agricultural soils to minimize the release of P to aquatic environments.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-05-01","The student, Mary Arenberg, accepted the attached license on 2021-03-13 at 18:15.","The student, Mary Arenberg, submitted this Dissertation for approval on 2021-03-13 at 18:37.","This Dissertation was approved for publication on 2021-03-18 at 14:20.","DSpace SAF Submission Ingestion Package generated from Vireo submission #16195 on 2021-09-16 at 20:07:12","Made available in DSpace on 2021-09-17T04:03:59Z (GMT). No. of bitstreams: 2 ARENBERG-DISSERTATION-2021.pdf: 1919839 bytes, checksum: 04c1160a8cc79bcf799f53b82188e8b9 (MD5) LICENSE.txt: 4210 bytes, checksum: 5f903e024fb7a66685663ad1558aa8d0 (MD5) Previous issue date: 2021-03-18","Embargo set by: Seth Robbins for item 118624 Lift date: 2023-09-17T04:04:53Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Embargo set by: Seth Robbins for item 118624 Lift date: 2023-09-17T04:07:01Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["The assessment of physicochemical factors influencing phosphorus mineralization and immobilization in an Illinois floodplain soil"]}]}],"canonical_facts":{"dc:contributor":["Arai, Yuji","Mulvaney, Richard","Matthews, Jeffrey W","Chu, Maria L"],"dc:creator":["Arenberg, Mary"],"dc:date":["2021-09-17T04:03:59Z","2023-09-17T04:07:01Z","2021-03-18","2021-05"],"dc:description":["Persistent losses of phosphorus (P) from soil to aquatic environments, provoked by human activity, degrade downstream water quality. Thus, it is critical to gain a deeper understanding of the biogeochemical processes that govern P bioavailability/mobility in the soil, including P mineralization and immobilization. Through microbially mediated immobilization, inorganic P is transformed into an organic form while during mineralization, organic P is converted into a labile, inorganic form, which is more susceptible to loss. In this study, the occurrence of mineralization/immobilization in Illinois floodplain soils was thoroughly examined. First, a comprehensive examination of mineralization and immobilization parameters in a floodplain and its adjacent upland was carried out. Due to higher total organic P and microbial P relative to the upland soil, it was concluded that the floodplain soil buffers P in part through microbial immobilization (Chapter 2). However, the degree of P immobilization varied throughout the floodplain, which motivated further investigation of physicochemical parameters that may be influencing the process, namely organic C and inorganic N. The following objectives were subsequently developed: 1) to evaluate the influence of native leaf residue on P reaction dynamics as a function of the C composition of the residue and the soil organic C:P ratio and 2) to investigate if the P mineralization rates vary as a function of inorganic nitrogen (N) species. Separately, floodplain soils were amended with 1) three species of native leaf residue with varying C compositions and 2) nitrate (NO3-N) and ammonium (NH4-N). Phosphorus mineralization/immobilization dynamics (i.e., wet chemistry analysis and NMR spectroscopy) were examined during long-term laboratory incubations. In the C study, residues with low aromaticity promoted P mineralization, and residues with high aromaticity and hydrophobicity led to P immobilization (Chapter 3). In the N study, NH4-N was more effective at boosting phosphatase activity and P mineralization rates than NO3-N (Chapter 4). It was concluded that both C and N have a large influence on P mineralization and immobilization in floodplain soil. On one hand, the incorporation of vegetation that specifically produces litter with more recalcitrant C compounds could optimize soil P sequestration in constructed floodplain buffers and improve downstream water quality. On the other hand, excess inorganic N, especially NH4-N, could promote mineralization and reduce P sequestration. These conclusions should be considered in the management of floodplains, wetlands, and P rich agricultural soils to minimize the release of P to aquatic environments.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-05-01","The student, Mary Arenberg, accepted the attached license on 2021-03-13 at 18:15.","The student, Mary Arenberg, submitted this Dissertation for approval on 2021-03-13 at 18:37.","This Dissertation was approved for publication on 2021-03-18 at 14:20.","DSpace SAF Submission Ingestion Package generated from Vireo submission #16195 on 2021-09-16 at 20:07:12","Made available in DSpace on 2021-09-17T04:03:59Z (GMT). No. of bitstreams: 2 ARENBERG-DISSERTATION-2021.pdf: 1919839 bytes, checksum: 04c1160a8cc79bcf799f53b82188e8b9 (MD5) LICENSE.txt: 4210 bytes, checksum: 5f903e024fb7a66685663ad1558aa8d0 (MD5) Previous issue date: 2021-03-18","Embargo set by: Seth Robbins for item 118624 Lift date: 2023-09-17T04:04:53Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Embargo set by: Seth Robbins for item 118624 Lift date: 2023-09-17T04:07:01Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited"],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/110779"],"dc:language":["en"],"dc:rights":["Copyright 2021 Mary Arenberg"],"dc:subject":["Soil Chemistry","Nutrient Cycling","Biogeochemistry","Phosphorus","Mineralization"],"dc:title":["The assessment of physicochemical factors influencing phosphorus mineralization and immobilization in an Illinois floodplain soil"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Natural Res & Env Sciences"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:52Z"}