{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/108013"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/108013","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"The role of agricultural intensification in modulating ecosystem properties of embedded subtropical wetlands","abstract":"Natural wetlands are unique ecosystems that offer substantial services to the surrounding landscape, are host to immense biodiversity, and are the largest global emitters of biogenic methane to the atmosphere. The unique nature of wetland ecosystems cater to an extensive diversity of microorganisms – essential regulators of biogeochemical and ecosystem-level processes including the production of methane. However, wetlands reside at the lowest elevational point in a landscape making them particularly vulnerable to inputs from the surrounding area. This is especially problematic for wetlands embedded in agricultural systems where surrounding management practices may indirectly impact wetland function and sustainability, including the relative influences on methane emission. The impact of surrounding management intensity on methane emissions from embedded wetlands is uncertain, in part because most studies on this subject focus on temperature and high latitude regions where agriculture is lacking. As humans continue to reduce global biodiversity through agricultural expansion and intensification, it remains unclear the degree this trend will impact wetland microbial populations. This thesis examines how management of the surrounding agricultural landscape, including intensity and/or grazing, influences net methane emissions and microbial populations from embedded, seasonal subtropical wetlands. This research further determined key mechanisms by which management decisions at the landscape scale modulate CH4 emissions from embedded wetlands. The goals of this research were to: 1) quantify the effects of surrounding agriculture on net CH4 emissions from embedded wetlands, 2) assess the impact management intensity has on the diversity and composition of wetland microbial populations, and 3) examine the relationship between ecosystem and microbial functionality with particular emphasis on methanogenic microorganisms. The findings presented here show that agricultural management strategies to optimize cattle production have significant and holistic impacts on functions important for CH4 production and the microbial diversity of embedded wetlands. Wetlands, but also tropical and subtropical regions in general, are largely underrepresented in literature, and the context of these results reflect the importance of expanding consideration of these regions regarding the impacts of agriculture on local ecosystems.","abstract_html":"Natural wetlands are unique ecosystems that offer substantial services to the surrounding landscape, are host to immense biodiversity, and are the largest global emitters of biogenic methane to the atmosphere. The unique nature of wetland ecosystems cater to an extensive diversity of microorganisms – essential regulators of biogeochemical and ecosystem-level processes including the production of methane. However, wetlands reside at the lowest elevational point in a landscape making them particularly vulnerable to inputs from the surrounding area. This is especially problematic for wetlands embedded in agricultural systems where surrounding management practices may indirectly impact wetland function and sustainability, including the relative influences on methane emission. The impact of surrounding management intensity on methane emissions from embedded wetlands is uncertain, in part because most studies on this subject focus on temperature and high latitude regions where agriculture is lacking. As humans continue to reduce global biodiversity through agricultural expansion and intensification, it remains unclear the degree this trend will impact wetland microbial populations. This thesis examines how management of the surrounding agricultural landscape, including intensity and/or grazing, influences net methane emissions and microbial populations from embedded, seasonal subtropical wetlands. This research further determined key mechanisms by which management decisions at the landscape scale modulate CH4 emissions from embedded wetlands. The goals of this research were to: 1) quantify the effects of surrounding agriculture on net CH4 emissions from embedded wetlands, 2) assess the impact management intensity has on the diversity and composition of wetland microbial populations, and 3) examine the relationship between ecosystem and microbial functionality with particular emphasis on methanogenic microorganisms. The findings presented here show that agricultural management strategies to optimize cattle production have significant and holistic impacts on functions important for CH4 production and the microbial diversity of embedded wetlands. Wetlands, but also tropical and subtropical regions in general, are largely underrepresented in literature, and the context of these results reflect the importance of expanding consideration of these regions regarding the impacts of agriculture on local ecosystems.","abstract_has_math":false,"creators":["Delucia, Nicholas J."],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Plant Biology","degree_department":null,"school":null,"contributors":["Bernacchi, Carl J","Gomez-Casanovas, Nuria","Ainsworth, Elizabeth A","Yang, Wendy H"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2020,"date_issued":"2020-08-26T21:54:59Z","date_published":"2020-08-26T21:54:59Z","updated_at":"2026-07-22T22:24:47Z","subjects":["Plant Biology","Wetlands","Subtropics: Subtropical","Florida","Methane","CH4","green house gases","GHG"],"languages":["en"],"rights":["Copyright 2020 Nicholas Delucia"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/108013","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Bernacchi, Carl J","Gomez-Casanovas, Nuria","Ainsworth, Elizabeth A","Yang, Wendy H"]},{"key":"dc:creator","label":"Author","values":["Delucia, Nicholas J."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2020-08-26T21:54:59Z","2020-05-08","2020-05"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Plant Biology"]},{"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":["Plant Biology","Wetlands","Subtropics: Subtropical","Florida","Methane","CH4","green house gases","GHG"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2020 Nicholas Delucia"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/108013"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Natural wetlands are unique ecosystems that offer substantial services to the surrounding landscape, are host to immense biodiversity, and are the largest global emitters of biogenic methane to the atmosphere. The unique nature of wetland ecosystems cater to an extensive diversity of microorganisms – essential regulators of biogeochemical and ecosystem-level processes including the production of methane. However, wetlands reside at the lowest elevational point in a landscape making them particularly vulnerable to inputs from the surrounding area. This is especially problematic for wetlands embedded in agricultural systems where surrounding management practices may indirectly impact wetland function and sustainability, including the relative influences on methane emission. The impact of surrounding management intensity on methane emissions from embedded wetlands is uncertain, in part because most studies on this subject focus on temperature and high latitude regions where agriculture is lacking. As humans continue to reduce global biodiversity through agricultural expansion and intensification, it remains unclear the degree this trend will impact wetland microbial populations. This thesis examines how management of the surrounding agricultural landscape, including intensity and/or grazing, influences net methane emissions and microbial populations from embedded, seasonal subtropical wetlands. This research further determined key mechanisms by which management decisions at the landscape scale modulate CH4 emissions from embedded wetlands. The goals of this research were to: 1) quantify the effects of surrounding agriculture on net CH4 emissions from embedded wetlands, 2) assess the impact management intensity has on the diversity and composition of wetland microbial populations, and 3) examine the relationship between ecosystem and microbial functionality with particular emphasis on methanogenic microorganisms. The findings presented here show that agricultural management strategies to optimize cattle production have significant and holistic impacts on functions important for CH4 production and the microbial diversity of embedded wetlands. Wetlands, but also tropical and subtropical regions in general, are largely underrepresented in literature, and the context of these results reflect the importance of expanding consideration of these regions regarding the impacts of agriculture on local ecosystems.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2020-08-25 without embargo terms","The student, Nicholas Delucia, accepted the attached license on 2020-05-07 at 17:19.","The student, Nicholas Delucia, submitted this Dissertation for approval on 2020-05-07 at 17:38.","This Dissertation was approved for publication on 2020-05-08 at 15:53.","DSpace SAF Submission Ingestion Package generated from Vireo submission #15284 on 2020-08-25 at 17:13:18","Made available in DSpace on 2020-08-26T21:54:59Z (GMT). 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This thesis examines how management of the surrounding agricultural landscape, including intensity and/or grazing, influences net methane emissions and microbial populations from embedded, seasonal subtropical wetlands. This research further determined key mechanisms by which management decisions at the landscape scale modulate CH4 emissions from embedded wetlands. The goals of this research were to: 1) quantify the effects of surrounding agriculture on net CH4 emissions from embedded wetlands, 2) assess the impact management intensity has on the diversity and composition of wetland microbial populations, and 3) examine the relationship between ecosystem and microbial functionality with particular emphasis on methanogenic microorganisms. The findings presented here show that agricultural management strategies to optimize cattle production have significant and holistic impacts on functions important for CH4 production and the microbial diversity of embedded wetlands. 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