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Carbon Cycling and Functional Redundancy in Closed Microbial Ecosystems
Carbon Cycling and Functional Redundancy in Closed Microbial Ecosystems
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103636
- ISBN
- 9798314842621
- DDC
- 574.191
- 서명/저자
- Carbon Cycling and Functional Redundancy in Closed Microbial Ecosystems
- 발행사항
- [Sl] : University of Illinois at Urbana-Champaign, 2023
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2023
- 형태사항
- 200 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-11, Section: B.
- 주기사항
- Advisor: O'Dwyer, James.
- 학위논문주기
- Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2023.
- 초록/해제
- 요약Life on Earth depends on ecologically driven nutrient cycles to regenerate resources. Understanding how nutrient cycles emerge from a complex web of ecological processes is a central challenge in ecology. However, we lack model ecosystems that can be replicated, manipulated, and quantified in the laboratory, making it challenging to determine how changes in composition and the environment impact cycling. The goals of my work were to understand how carbon cycling arises in microbial communities and how community structure impacts the capacity to cycle carbon. Enabled by a new high-precision method to quantify carbon cycling, we show that materially closed microbial ecosystems (CES) provided with only light self-organized to robustly cycle carbon. Studying replicate CES that support carbon cycles revealed variable community composition but a conserved set of metabolic capabilities. We demonstrate that carbon cycling arises in functionally redundant communities in CES.We then focused on studying how community structure impacts the carbon cycling capacity of CES. To explore the functional landscape of carbon cycling CES within a reasonable timeframe, we constructed a consumer-resource model of a CES. The model incorporates thermodynamics, autotroph and heterotroph consumers and necromass recycling. A library of CES were simulated and regression methods were employed to find a mapping between community composition and carbon cycling rates. Our model supports that functionally redundant communities are mainly composed of consumer generalists. Furthermore, we find that communities composed of generalists are more amenable to our regression approach than communities composed of specialists. We argue that this difference in predictive power might arise from disparities in the ruggedness of the functional landscapes of CES composed of generalist versus specialists.Our study helps establish CES as model biospheres for studying how ecosystems persistently cycle nutrients and provides one of the few concrete physical instances of functional redundancy in ecology.
- 일반주제명
- Biophysics
- 일반주제명
- Home economics
- 일반주제명
- Microbiology
- 키워드
- Carbon cycling
- 기타저자
- University of Illinois at Urbana-Champaign Physics
- 기본자료저록
- Dissertations Abstracts International. 86-11B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■040 ▼aMiAaPQ▼cMiAaPQ
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■1001 ▼ade Jesus Astacio, Luis Miguel.
■24510▼aCarbon Cycling and Functional Redundancy in Closed Microbial Ecosystems
■260 ▼a[Sl]▼bUniversity of Illinois at Urbana-Champaign▼c2023
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2023
■300 ▼a200 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-11, Section: B.
■500 ▼aAdvisor: O'Dwyer, James.
■5021 ▼aThesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2023.
■520 ▼aLife on Earth depends on ecologically driven nutrient cycles to regenerate resources. Understanding how nutrient cycles emerge from a complex web of ecological processes is a central challenge in ecology. However, we lack model ecosystems that can be replicated, manipulated, and quantified in the laboratory, making it challenging to determine how changes in composition and the environment impact cycling. The goals of my work were to understand how carbon cycling arises in microbial communities and how community structure impacts the capacity to cycle carbon. Enabled by a new high-precision method to quantify carbon cycling, we show that materially closed microbial ecosystems (CES) provided with only light self-organized to robustly cycle carbon. Studying replicate CES that support carbon cycles revealed variable community composition but a conserved set of metabolic capabilities. We demonstrate that carbon cycling arises in functionally redundant communities in CES.We then focused on studying how community structure impacts the carbon cycling capacity of CES. To explore the functional landscape of carbon cycling CES within a reasonable timeframe, we constructed a consumer-resource model of a CES. The model incorporates thermodynamics, autotroph and heterotroph consumers and necromass recycling. A library of CES were simulated and regression methods were employed to find a mapping between community composition and carbon cycling rates. Our model supports that functionally redundant communities are mainly composed of consumer generalists. Furthermore, we find that communities composed of generalists are more amenable to our regression approach than communities composed of specialists. We argue that this difference in predictive power might arise from disparities in the ruggedness of the functional landscapes of CES composed of generalist versus specialists.Our study helps establish CES as model biospheres for studying how ecosystems persistently cycle nutrients and provides one of the few concrete physical instances of functional redundancy in ecology.
■590 ▼aSchool code: 0090.
■650 4▼aBiophysics
■650 4▼aHome economics
■650 4▼aMicrobiology
■653 ▼aMicrobial ecology
■653 ▼aClosed microbial ecosystem
■653 ▼aCarbon cycling
■653 ▼aFunctional redundancy
■653 ▼aConsumer-resource model
■690 ▼a0786
■690 ▼a0410
■690 ▼a0386
■71020▼aUniversity of Illinois at Urbana-Champaign▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g86-11B.
■790 ▼a0090
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358051▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
