干旱区生态环境知识资源中心(Arid): Life in the desert: The impact of geographic and environmental gradients on genetic diversity and population structure of Ivesia webberi

Arid

DOI	10.1002/ece3.8389
	Life in the desert: The impact of geographic and environmental gradients on genetic diversity and population structure of Ivesia webberi
	Borokini, Israel T.; Klingler, Kelly B.; Peacock, Mary M.
通讯作者	Borokini, IT (corresponding author), Univ Calif Berkeley, Dept Integrat Biol, Univ & Jepson Herbaria, Berkeley, CA 94720 USA.
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2021
卷号	11 期号:23 页码:17537-17556
英文摘要	For range-restricted species with disjunct populations, it is critical to characterize population genetic structure, gene flow, and factors that influence functional connectivity among populations in order to design effective conservation programs. In this study, we genotyped 314 individuals from 16 extant populations of Ivesia webberi, a United States federally threatened Great Basin Desert using six microsatellite loci. We assessed the effects of Euclidean distance, landscape features, and ecological dissimilarity on the pairwise genetic distance of the sampled populations, while also testing for a potential relationship between I. webberi genetic diversity and diversity in the vegetative communities. The results show low levels of genetic diversity overall (H-e = 0.200-0.441; H-o = 0.192-0.605) and high genetic differentiation among populations. Genetic diversity was structured along a geographic gradient, congruent with patterns of isolation by distance. Populations near the species' range core have relatively high genetic diversity, supporting in part a central-marginal pattern, while also showing some evidence for a metapopulation dynamic. Peripheral populations have lower genetic diversity, significantly higher genetic distances, and higher relatedness. Genotype cluster admixture results suggest a complex dispersal pattern among populations with dispersal direction and distance varying on the landscape. Pairwise genetic distance strongly correlates with elevation, actual evapotranspiration, and summer seasonal precipitation, indicating a role for isolation by environment, which the observed phenological mismatches among the populations also support. The significant correlation between pairwise genetic distance and floristic dissimilarity in the germinated soil seed bank suggests that annual regeneration in the plant communities contribute to the maintenance of genetic diversity in I. webberi.
英文关键词	central marginal hypothesis gene flow isolation by distance isolation by environment Ivesia webberi species-genetic diversity
类型	Article
语种	英语
开放获取类型	Green Accepted, gold
收录类别	SCI-E
WOS记录号	WOS:000721465100001
WOS关键词	LANDSCAPE CONNECTIVITY ; HABITAT FRAGMENTATION ; COMPUTER-PROGRAM ; ALLELE FREQUENCY ; EXTINCTION RISK ; CIRCUIT-THEORY ; GREAT-BASIN ; PLANT ; SIZE ; FLOW
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/373882
作者单位	[Borokini, Israel T.; Peacock, Mary M.] Univ Nevada, Dept Biol, Ecol Evolut & Conservat Biol Grad Program, Reno, NV 89557 USA; [Borokini, Israel T.] Univ Calif Berkeley, Dept Integrat Biol, Univ & Jepson Herbaria, Berkeley, CA 94720 USA; [Klingler, Kelly B.] Univ Massachusetts, Dept Environm Conservat, Amherst, MA 01003 USA; [Peacock, Mary M.] Univ Nevada, Dept Biol, Reno, NV 89557 USA
推荐引用方式 GB/T 7714	Borokini, Israel T.,Klingler, Kelly B.,Peacock, Mary M.. Life in the desert: The impact of geographic and environmental gradients on genetic diversity and population structure of Ivesia webberi[J],2021,11(23):17537-17556.
APA	Borokini, Israel T.,Klingler, Kelly B.,&Peacock, Mary M..(2021).Life in the desert: The impact of geographic and environmental gradients on genetic diversity and population structure of Ivesia webberi.ECOLOGY AND EVOLUTION,11(23),17537-17556.
MLA	Borokini, Israel T.,et al."Life in the desert: The impact of geographic and environmental gradients on genetic diversity and population structure of Ivesia webberi".ECOLOGY AND EVOLUTION 11.23(2021):17537-17556.