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Coral Reef Arks: Molecular Mechanisms Underlying the Demise and Recovery of Coral Reef Ecosystems
Coral Reef Arks: Molecular Mechanisms Underlying the Demise and Recovery of Coral Reef Ecosystems
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211151001
- ISBN
- 9798383125663
- DDC
- 576
- 서명/저자
- Coral Reef Arks: Molecular Mechanisms Underlying the Demise and Recovery of Coral Reef Ecosystems
- 발행사항
- [Sl] : University of California, San Diego, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 357 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-12, Section: B.
- 주기사항
- Advisor: Rohwer, Forest L.
- 학위논문주기
- Thesis (Ph.D.)--University of California, San Diego, 2024.
- 초록/해제
- 요약Viruses and microbes are foundational to the healthy functioning of coral reef ecosystems. However, dysregulation among viral and microbial communities owing to global and local pressures is driving widespread coral reef collapse. The objective of this dissertation was to investigate the drivers of this ecosystem degradation process, termed microbialization, on coral reefs and to identify mechanisms associated with ecosystem recovery from microbialized states.To begin the dissertation, I review the biochemistry underlying coral reef function and describe how ecosystem energy is differentially stored in predominantly the macroorganisms on healthy coral reefs versus the microbes on degraded coral reefs as a result of positive feedback loops. In this review, I develop hypotheses concerning how microbes, organic matter, and oxygen interact to drive shifts to microbialized states and propose a tool to manipulate reef biochemistry to counter microbialization. To begin testing these hypotheses, I build midwater mesocosm tools called Coral Arks, develop protocols for designing, deploying, and monitoring them in situ, and demonstrate their structural integrity in the marine environment. Next, I use Coral Arks in a long-term field experiment, demonstrating that microbial ecology, water quality, and biogeochemistry are improved on Arks relative to seafloor sites at the same depth. Lower microbialization on the Arks enhanced survival and growth of transplanted corals and recruited diverse assemblages of reef organisms, including fish and benthic invertebrates. These findings highlight the role of microbes in shaping the coral reef abiotic environment and suggest microbialization can be countered by reducing organic matter inputs, enhancing dissolved oxygen, and reinstating viral predatory control over microbes. Lastly, I discuss the future of coral reef restoration, identify explicit goals for reinstating reef ecosystem services, and through a literature review, summarize potential interventions for manipulating coral reefs. Using this information, I propose a restoration framework based in control theory that uses Coral Arks as experimental platforms for identifying effective restoration interventions and scaling these interventions to a natural reef.
- 일반주제명
- Microbiology
- 일반주제명
- Biogeochemistry
- 일반주제명
- Ocean engineering
- 일반주제명
- Ecology
- 일반주제명
- Biology
- 키워드
- Coral reef
- 키워드
- Deoxygenation
- 키워드
- Microbialization
- 키워드
- Restoration
- 기타저자
- University of California, San Diego Biology (Joint Doctoral with SDSU)
- 기본자료저록
- Dissertations Abstracts International. 85-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211151001
■006m o d
■007cr#unu||||||||
■020 ▼a9798383125663
■035 ▼a(MiAaPQ)AAI30993933
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a576
■1001 ▼aBaer, Jason Lajos.
■24510▼aCoral Reef Arks: Molecular Mechanisms Underlying the Demise and Recovery of Coral Reef Ecosystems
■260 ▼a[Sl]▼bUniversity of California, San Diego▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a357 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-12, Section: B.
■500 ▼aAdvisor: Rohwer, Forest L.
■5021 ▼aThesis (Ph.D.)--University of California, San Diego, 2024.
■520 ▼aViruses and microbes are foundational to the healthy functioning of coral reef ecosystems. However, dysregulation among viral and microbial communities owing to global and local pressures is driving widespread coral reef collapse. The objective of this dissertation was to investigate the drivers of this ecosystem degradation process, termed microbialization, on coral reefs and to identify mechanisms associated with ecosystem recovery from microbialized states.To begin the dissertation, I review the biochemistry underlying coral reef function and describe how ecosystem energy is differentially stored in predominantly the macroorganisms on healthy coral reefs versus the microbes on degraded coral reefs as a result of positive feedback loops. In this review, I develop hypotheses concerning how microbes, organic matter, and oxygen interact to drive shifts to microbialized states and propose a tool to manipulate reef biochemistry to counter microbialization. To begin testing these hypotheses, I build midwater mesocosm tools called Coral Arks, develop protocols for designing, deploying, and monitoring them in situ, and demonstrate their structural integrity in the marine environment. Next, I use Coral Arks in a long-term field experiment, demonstrating that microbial ecology, water quality, and biogeochemistry are improved on Arks relative to seafloor sites at the same depth. Lower microbialization on the Arks enhanced survival and growth of transplanted corals and recruited diverse assemblages of reef organisms, including fish and benthic invertebrates. These findings highlight the role of microbes in shaping the coral reef abiotic environment and suggest microbialization can be countered by reducing organic matter inputs, enhancing dissolved oxygen, and reinstating viral predatory control over microbes. Lastly, I discuss the future of coral reef restoration, identify explicit goals for reinstating reef ecosystem services, and through a literature review, summarize potential interventions for manipulating coral reefs. Using this information, I propose a restoration framework based in control theory that uses Coral Arks as experimental platforms for identifying effective restoration interventions and scaling these interventions to a natural reef.
■590 ▼aSchool code: 0033.
■650 4▼aMicrobiology
■650 4▼aBiogeochemistry
■650 4▼aOcean engineering
■650 4▼aEcology
■650 4▼aBiology
■653 ▼aCoral reef
■653 ▼aDeoxygenation
■653 ▼aMicrobial ecology
■653 ▼aMicrobialization
■653 ▼aRestoration
■690 ▼a0410
■690 ▼a0425
■690 ▼a0547
■690 ▼a0306
■690 ▼a0329
■71020▼aUniversity of California, San Diego▼bBiology (Joint Doctoral with SDSU).
■7730 ▼tDissertations Abstracts International▼g85-12B.
■790 ▼a0033
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17160343▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


