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Island Hopping in the Tropics: Conservation Genetics, Speciation, and Biogeography in the Iconic Flowering Plant Group Hibiscus Sect. Lilibiscus
Island Hopping in the Tropics: Conservation Genetics, Speciation, and Biogeography in the ...
Island Hopping in the Tropics: Conservation Genetics, Speciation, and Biogeography in the Iconic Flowering Plant Group Hibiscus Sect. Lilibiscus

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20250211152800
ISBN  
9798383685020
DDC  
574
저자명  
Mashburn, Brock.
서명/저자  
Island Hopping in the Tropics: Conservation Genetics, Speciation, and Biogeography in the Iconic Flowering Plant Group Hibiscus Sect. Lilibiscus
발행사항  
[Sl] : Washington University in St Louis, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
215 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-02, Section: B.
주기사항  
Advisor: Edwards, Christine E.;Olsen, Kenneth M.
학위논문주기  
Thesis (Ph.D.)--Washington University in St. Louis, 2024.
초록/해제  
요약Islands have played a crucial role in evolutionary biology, providing key insights for both Charles Darwin and Alfred Russel Wallace in formulating their theories of evolution. The development of Island Biogeography Theory and the General Dynamic Model of oceanic island biogeography have formed the theoretical foundation of island studies over the last sixty years, leading to substantial advancements in our understanding of biodiversity evolution. Despite their critical value for evolutionary theory, islands face unprecedented ecological collapse, with species on islands facing significantly higher extinction rates than on continents. The island extinction crisis highlights the need for integrating conservation perspectives into evolutionary research. This dissertation uses Hibiscus section Lilibiscus as a model group in which to examine three fundamental evolutionary processes - dispersal, speciation, and extinction - that have produced the incredible but vulnerable biodiversity exhibited by oceanic islands across the globe. Chapter 1 assesses ongoing conservation activities for the critically endangered Hibiscus liliiflorus in the Mascarene Islands, revealing a gap in the conservation of extant genetic diversity and making recommendations for improved conservation actions. Chapters 2 and 3 focus on speciation within the Mascarene Islands, resolving taxonomic confusion and producing a population-level genetic study that shows unique support for speciation predictions fundamental to the General Dynamic Model. Chapter 4 presents a global phylogeny of sect. Lilibiscus, revealing dispersal patterns that suggest islands may not be evolutionary dead ends, as is generally assumed, and may instead act as the launching point for the global diversification of the group. Together, these studies contribute to a deeper understanding of island biogeography while making a significant contribution to the conservation of sect. Lilibiscus. By linking evolutionary theory with practical conservation strategies, this dissertation underscores the importance of a holistic approach to studying and preserving island biodiversity.
일반주제명  
Biology
일반주제명  
Plant sciences
일반주제명  
Systematic biology
일반주제명  
Evolution & development
키워드  
Conservation genetics
키워드  
Evolutionary biology
키워드  
Island biogeography
키워드  
Long distance dispersal
키워드  
Malvaceae
기타저자  
Washington University in St. Louis Biology & Biomedical Sciences (Evolution Ecology & Population Biology)
기본자료저록  
Dissertations Abstracts International. 86-02B.
전자적 위치 및 접속  
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MARC

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■035    ▼a(MiAaPQ)AAI31556419
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a574
■1001  ▼aMashburn,  Brock.▼0(orcid)0000-0001-7426-4461
■24510▼aIsland  Hopping  in  the  Tropics:  Conservation  Genetics,  Speciation,  and  Biogeography  in  the  Iconic  Flowering  Plant  Group  Hibiscus  Sect.  Lilibiscus
■260    ▼a[Sl]▼bWashington  University  in  St  Louis▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a215  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-02,  Section:  B.
■500    ▼aAdvisor:  Edwards,  Christine  E.;Olsen,  Kenneth  M.
■5021  ▼aThesis  (Ph.D.)--Washington  University  in  St.  Louis,  2024.
■520    ▼aIslands  have  played  a  crucial  role  in  evolutionary  biology,  providing  key  insights  for  both  Charles  Darwin  and  Alfred  Russel  Wallace  in  formulating  their  theories  of  evolution.  The  development  of  Island  Biogeography  Theory  and  the  General  Dynamic  Model  of  oceanic  island  biogeography  have  formed  the  theoretical  foundation  of  island  studies  over  the  last  sixty  years,  leading  to  substantial  advancements  in  our  understanding  of  biodiversity  evolution.  Despite  their  critical  value  for  evolutionary  theory,  islands  face  unprecedented  ecological  collapse,  with  species  on  islands  facing  significantly  higher  extinction  rates  than  on  continents.  The  island  extinction  crisis  highlights  the  need  for  integrating  conservation  perspectives  into  evolutionary  research.  This  dissertation  uses  Hibiscus  section  Lilibiscus  as  a  model  group  in  which  to  examine  three  fundamental  evolutionary  processes  -  dispersal,  speciation,  and  extinction  -  that  have  produced  the  incredible  but  vulnerable  biodiversity  exhibited  by  oceanic  islands  across  the  globe.  Chapter  1  assesses  ongoing  conservation  activities  for  the  critically  endangered  Hibiscus  liliiflorus  in  the  Mascarene  Islands,  revealing  a  gap  in  the  conservation  of  extant  genetic diversity  and  making  recommendations  for  improved  conservation  actions.  Chapters  2  and  3  focus  on  speciation  within  the  Mascarene  Islands,  resolving  taxonomic  confusion  and  producing  a  population-level  genetic  study  that  shows  unique  support  for  speciation  predictions  fundamental  to  the  General  Dynamic  Model.  Chapter  4  presents  a  global  phylogeny  of  sect.  Lilibiscus,  revealing  dispersal  patterns  that  suggest  islands  may  not  be  evolutionary  dead  ends,  as  is  generally  assumed,  and  may  instead  act  as  the  launching  point  for  the  global  diversification  of  the  group.  Together,  these  studies  contribute  to  a  deeper  understanding  of  island  biogeography  while  making  a  significant  contribution  to  the  conservation  of  sect.  Lilibiscus.  By  linking  evolutionary  theory  with  practical  conservation  strategies,  this  dissertation  underscores  the  importance  of  a  holistic  approach  to  studying  and  preserving  island  biodiversity.
■590    ▼aSchool  code:  0252.
■650  4▼aBiology
■650  4▼aPlant  sciences
■650  4▼aSystematic  biology
■650  4▼aEvolution  &  development
■653    ▼aConservation  genetics
■653    ▼aEvolutionary  biology
■653    ▼aIsland  biogeography
■653    ▼aLong  distance  dispersal
■653    ▼aMalvaceae
■690    ▼a0306
■690    ▼a0479
■690    ▼a0423
■690    ▼a0412
■71020▼aWashington  University  in  St.  Louis▼bBiology  &  Biomedical  Sciences  (Evolution,  Ecology  &  Population  Biology).
■7730  ▼tDissertations  Abstracts  International▼g86-02B.
■790    ▼a0252
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17163843▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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