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Time Flies: Insights From Historical and Contemporary Data on the Temporal Trends and Conservation of Hawaiian Drosophilids.
Time Flies: Insights From Historical and Contemporary Data on the Temporal Trends and Conservation of Hawaiian Drosophilids.

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자료유형  
 학위논문
Control Number  
0017163288
International Standard Book Number  
9798384049005
Dewey Decimal Classification Number  
595
Main Entry-Personal Name  
O'Hearn, Kyla Briene.
Publication, Distribution, etc. (Imprint  
[S.l.] : Cornell University., 2024
Publication, Distribution, etc. (Imprint  
Ann Arbor : ProQuest Dissertations & Theses, 2024
Physical Description  
175 p.
General Note  
Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
General Note  
Advisor: O'Grady, Patrick.
Dissertation Note  
Thesis (Ph.D.)--Cornell University, 2024.
Summary, Etc.  
요약Hawaii's remarkable biodiversity, with over 9,300 endemic species of plants, animals, and fungi, serves as an exceptional example of evolutionary diversification. The Hawaiian Drosophilidae, a unique radiation of flies originating from a single colonization event approximately 25 million years ago, exemplify adaptive radiation within this unique ecosystem. This dissertation explores the intricate relationships between the distribution and vulnerability of Hawaiian Drosophilidae and various environmental variables, providing comprehensive insights into their ecological requirements and informing conservation strategies.In the first chapter, I conducted a detailed analysis of distribution data at different taxonomic hierarchies, employing statistical models such as random forest and generalized additive models to assess the influence of moisture zone, land cover, and elevation on species richness and diversity. The findings revealed that agricultural land, shrub and brush rangeland, and evergreen forestland are significant predictors of richness and diversity, with species group-specific responses across islands. Host specialists, particularly those utilizing bark, were found to be commonly restricted to high elevation environments and are more at risk for extinction. These results highlight the need for tailored conservation strategies to address the complexity of factors influencing Hawaiian Drosophila distribution and vulnerability.The second chapter revisits historical data from the Waikamoi Forest Preserve, collected by J.P. Murphy between 1965-1968, to evaluate shifts in community composition in response to invasive species, habitat modification, and climate change. Analyses of this historical data underscore the sensitivity of Hawaiian Drosophila to ecological changes and the significant seasonal impacts on their richness and abundance. This work emphasizes the importance of incorporating historical survey data into conservation efforts to effectively address the challenges posed by rapid environmental changes and the escalating threats of invasive species.The third chapter compiles surveys of Hawaiian Drosophila conducted in the Waikamoi Preserve on Maui from the 1960s to modern collections to examine species persistence and potential declines over the past 50 years. The study found a stark decline in Hawaiian Drosophila populations, largely driven by fluctuations in precipitation and exacerbated by the introduction of invasive species such as habitat-modifying invasive ginger and predatory Vespula wasps. Various management strategies employed in the East Maui watershed are discussed, with recommendations to maximize native plant and insect diversity while preserving access to water for agriculture and human consumption.Collectively, this dissertation provides a comprehensive analysis of the factors shaping the diversity and abundance of Hawaiian Drosophilidae. By understanding these relationships, we can contribute to conservation efforts aimed at preserving these unique species and their habitats in the face of ongoing environmental threats.
Subject Added Entry-Topical Term  
Entomology.
Subject Added Entry-Topical Term  
Conservation biology.
Subject Added Entry-Topical Term  
Forestry.
Subject Added Entry-Topical Term  
Toxicology.
Index Term-Uncontrolled  
Computational biology
Index Term-Uncontrolled  
Drosophilidae
Index Term-Uncontrolled  
Hawaii
Index Term-Uncontrolled  
Fungi
Index Term-Uncontrolled  
Plants
Added Entry-Corporate Name  
Cornell University Entomology
Host Item Entry  
Dissertations Abstracts International. 86-03B.
Electronic Location and Access  
로그인을 한후 보실 수 있는 자료입니다.
Control Number  
joongbu:656441

MARC

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■020    ▼a9798384049005
■035    ▼a(MiAaPQ)AAI31486358
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a595
■1001  ▼aO'Hearn,  Kyla  Briene.▼0(orcid)0009-0004-4045-4530
■24510▼aTime  Flies:  Insights  From  Historical  and  Contemporary  Data  on  the  Temporal  Trends  and  Conservation  of  Hawaiian  Drosophilids.
■260    ▼a[S.l.]▼bCornell  University.  ▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a175  p.
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-03,  Section:  B.
■500    ▼aAdvisor:  O'Grady,  Patrick.
■5021  ▼aThesis  (Ph.D.)--Cornell  University,  2024.
■520    ▼aHawaii's  remarkable  biodiversity,  with  over  9,300  endemic  species  of  plants,  animals,  and  fungi,  serves  as  an  exceptional  example  of  evolutionary  diversification.  The  Hawaiian  Drosophilidae,  a  unique  radiation  of  flies  originating  from  a  single  colonization  event  approximately  25  million  years  ago,  exemplify  adaptive  radiation  within  this  unique  ecosystem.  This  dissertation  explores  the  intricate  relationships  between  the  distribution  and  vulnerability  of  Hawaiian  Drosophilidae  and  various  environmental  variables,  providing  comprehensive  insights  into  their  ecological  requirements  and  informing  conservation  strategies.In  the  first  chapter,  I  conducted  a  detailed  analysis  of  distribution  data  at  different  taxonomic  hierarchies,  employing  statistical  models  such  as  random  forest  and  generalized  additive  models  to  assess  the  influence  of  moisture  zone,  land  cover,  and  elevation  on  species  richness  and  diversity.  The  findings  revealed  that  agricultural  land,  shrub  and  brush  rangeland,  and  evergreen  forestland  are  significant  predictors  of  richness  and  diversity,  with  species  group-specific  responses  across  islands.  Host  specialists,  particularly  those  utilizing  bark,  were  found  to  be  commonly  restricted  to  high  elevation  environments  and  are  more  at  risk  for  extinction.  These  results highlight  the  need  for  tailored  conservation  strategies  to  address  the  complexity  of  factors  influencing  Hawaiian  Drosophila  distribution  and  vulnerability.The  second  chapter  revisits  historical  data  from  the  Waikamoi  Forest  Preserve,  collected  by  J.P.  Murphy  between  1965-1968,  to  evaluate  shifts  in  community  composition  in  response  to  invasive  species,  habitat  modification,  and  climate  change.  Analyses  of  this  historical  data  underscore  the  sensitivity  of  Hawaiian  Drosophila  to  ecological  changes  and  the  significant  seasonal  impacts  on  their  richness  and  abundance.  This  work  emphasizes  the  importance  of  incorporating  historical  survey  data  into  conservation  efforts  to  effectively  address  the  challenges  posed  by  rapid  environmental  changes  and  the  escalating  threats  of  invasive  species.The  third  chapter  compiles  surveys  of  Hawaiian  Drosophila  conducted  in  the  Waikamoi  Preserve  on  Maui  from  the  1960s  to  modern  collections  to  examine  species  persistence  and  potential  declines  over  the  past  50  years.  The  study  found  a  stark  decline  in  Hawaiian  Drosophila  populations,  largely  driven  by  fluctuations  in  precipitation  and  exacerbated  by  the  introduction  of  invasive  species  such  as  habitat-modifying  invasive  ginger  and  predatory  Vespula  wasps.  Various  management  strategies  employed  in  the  East  Maui  watershed  are  discussed,  with  recommendations  to  maximize  native  plant  and  insect  diversity  while  preserving  access  to  water  for  agriculture  and  human  consumption.Collectively,  this  dissertation  provides  a  comprehensive  analysis  of  the  factors  shaping  the  diversity  and  abundance  of  Hawaiian  Drosophilidae.  By  understanding  these  relationships,  we  can  contribute  to  conservation  efforts  aimed  at  preserving  these  unique  species  and  their  habitats  in  the  face  of  ongoing  environmental  threats.
■590    ▼aSchool  code:  0058.
■650  4▼aEntomology.
■650  4▼aConservation  biology.
■650  4▼aForestry.
■650  4▼aToxicology.
■653    ▼aComputational  biology
■653    ▼aDrosophilidae
■653    ▼aHawaii
■653    ▼aFungi
■653    ▼aPlants
■690    ▼a0353
■690    ▼a0408
■690    ▼a0478
■690    ▼a0383
■71020▼aCornell  University▼bEntomology.
■7730  ▼tDissertations  Abstracts  International▼g86-03B.
■790    ▼a0058
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17163288▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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