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Resource Partitioning and Ecomorphology Across Levels of Biological Organization in Spiny Lizards, Genus Sceloporus
Resource Partitioning and Ecomorphology Across Levels of Biological Organization in Spiny Lizards, Genus Sceloporus
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211152705
- ISBN
- 9798384450269
- DDC
- 574
- 서명/저자
- Resource Partitioning and Ecomorphology Across Levels of Biological Organization in Spiny Lizards, Genus Sceloporus
- 발행사항
- [Sl] : University of California, Berkeley, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 88 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-04, Section: B.
- 주기사항
- Advisor: Wang, Ian J.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Berkeley, 2024.
- 초록/해제
- 요약This dissertation focuses primarily on closely-related species' coexistence and how it is both a function and a driver of phenotypic evolution. To understand how phenotypic diversity evolves in relation to a species' interactions and evolutionary history, I focus on ecomorphology-an organism's ecological role and morphological adaptations. My dissertation uses field and museum-based methods to quantify the dynamics of ecomorphological evolution within the genus Sceloporus, a radiation of ~100 lizard species, and how it influences species' resource use and distributions, from sites to landscapes to continents, and from populations to communities to the entire genus.Chapter I of my dissertation examines the relationship between resource use and phenotypic variation among four species of co-occurring lizards in a sky island system, the Chiricahua Mountains of southeastern Arizona. This isolated environment provides an opportunity to quantify resource use where forces of selection are expected to be strong. I quantified niche use of 300+ co-occurring lizards across multiple axes to determine their relative importance and found that perch height and type explained most variance between species, but I also uncovered variation in the temporal and thermal activity of these interacting species. By measuring phenotypic traits for all individuals, I found that species differed in traits associated with climbing ability, suggesting a coevolved relationship between physical traits and divergent niches.In Chapter II, I explored another resource axis along which many co-occurring species differentiate by quantifying the trophic ecology of the Sceloporus species in the Chiricahua Mountains. Using DNA metabarcoding, I found significant differences in species' diets concomitant with their respective ecologies as uncovered in Chapter 1. As sit-and-wait predators, diet is a function of microhabitat, underscoring the importance of spatial niche partitioning in allowing co-occurrence in this system.In Chapter III, I examined the dynamics of ecomorphological evolution in Sceloporus and its role in facilitating coexistence between congeners. By collecting ecological and morphological data for 80 taxa from 300+ specimens at 5 museums, I found that multivariate morphology is a good predictor of ecology and that Sceloporus species occur in six ecological modes with associated morphologies (ecomorphs). I show that the evolution of arboreality at the base of a rapid radiation led to further ecological and morphological evolution. Examination of the spatial distribution of ecomorphology revealed a pattern of spatial overdispersion: across their range Sceloporus assemblages are comprised of more ecomorphs than expected by chance, suggesting ecological and morphological diversity play a key role in spatial sorting.Together, the results of my dissertation suggest that across the Sceloporus radiation, ecology and morphology have evolved in concert and these traits influence the spatial distribution of populations, species, and assemblages.
- 일반주제명
- Biology
- 일반주제명
- Environmental science
- 키워드
- Ecomorphology
- 키워드
- Sceloporus
- 기타저자
- University of California, Berkeley Environmental Science Policy & Management
- 기본자료저록
- Dissertations Abstracts International. 86-04B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211152705
■006m o d
■007cr#unu||||||||
■020 ▼a9798384450269
■035 ▼a(MiAaPQ)AAI31488268
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a574
■1001 ▼aWesteen, Erin Paige.
■24510▼aResource Partitioning and Ecomorphology Across Levels of Biological Organization in Spiny Lizards, Genus Sceloporus
■260 ▼a[Sl]▼bUniversity of California, Berkeley▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a88 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-04, Section: B.
■500 ▼aAdvisor: Wang, Ian J.
■5021 ▼aThesis (Ph.D.)--University of California, Berkeley, 2024.
■520 ▼aThis dissertation focuses primarily on closely-related species' coexistence and how it is both a function and a driver of phenotypic evolution. To understand how phenotypic diversity evolves in relation to a species' interactions and evolutionary history, I focus on ecomorphology-an organism's ecological role and morphological adaptations. My dissertation uses field and museum-based methods to quantify the dynamics of ecomorphological evolution within the genus Sceloporus, a radiation of ~100 lizard species, and how it influences species' resource use and distributions, from sites to landscapes to continents, and from populations to communities to the entire genus.Chapter I of my dissertation examines the relationship between resource use and phenotypic variation among four species of co-occurring lizards in a sky island system, the Chiricahua Mountains of southeastern Arizona. This isolated environment provides an opportunity to quantify resource use where forces of selection are expected to be strong. I quantified niche use of 300+ co-occurring lizards across multiple axes to determine their relative importance and found that perch height and type explained most variance between species, but I also uncovered variation in the temporal and thermal activity of these interacting species. By measuring phenotypic traits for all individuals, I found that species differed in traits associated with climbing ability, suggesting a coevolved relationship between physical traits and divergent niches.In Chapter II, I explored another resource axis along which many co-occurring species differentiate by quantifying the trophic ecology of the Sceloporus species in the Chiricahua Mountains. Using DNA metabarcoding, I found significant differences in species' diets concomitant with their respective ecologies as uncovered in Chapter 1. As sit-and-wait predators, diet is a function of microhabitat, underscoring the importance of spatial niche partitioning in allowing co-occurrence in this system.In Chapter III, I examined the dynamics of ecomorphological evolution in Sceloporus and its role in facilitating coexistence between congeners. By collecting ecological and morphological data for 80 taxa from 300+ specimens at 5 museums, I found that multivariate morphology is a good predictor of ecology and that Sceloporus species occur in six ecological modes with associated morphologies (ecomorphs). I show that the evolution of arboreality at the base of a rapid radiation led to further ecological and morphological evolution. Examination of the spatial distribution of ecomorphology revealed a pattern of spatial overdispersion: across their range Sceloporus assemblages are comprised of more ecomorphs than expected by chance, suggesting ecological and morphological diversity play a key role in spatial sorting.Together, the results of my dissertation suggest that across the Sceloporus radiation, ecology and morphology have evolved in concert and these traits influence the spatial distribution of populations, species, and assemblages.
■590 ▼aSchool code: 0028.
■650 4▼aBiology
■650 4▼aEnvironmental science
■653 ▼aEcomorphology
■653 ▼aSceloporus
■653 ▼aChiricahua Mountains
■653 ▼aEcomorphological evolution
■690 ▼a0306
■690 ▼a0768
■690 ▼a0474
■71020▼aUniversity of California, Berkeley▼bEnvironmental Science, Policy, & Management.
■7730 ▼tDissertations Abstracts International▼g86-04B.
■790 ▼a0028
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17163418▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
