气候变化领域集成服务门户(CCPortal): Temporal changes in population genetics of six threatened Brazilian plant species in a fragmented landscape

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DOI	10.1016/j.foreco.2018.12.058
	Temporal changes in population genetics of six threatened Brazilian plant species in a fragmented landscape
	Lauterjung M.B.; Montagna T.; Bernardi A.P.; da Silva J.Z.; da Costa N.C.F.; Steiner F.; Mantovani A.; dos Reis M.S.
发表日期	2019
ISSN	0378-1127
起始页码	144
结束页码	150
卷号	435
英文摘要	Anthropic pressure has caused several changes in the environment, such as habitat loss and fragmentation. One effective way to evaluate its effects on population genetics is to monitor populations through time. We aimed to characterize the population genetics of six plant species at two different times (cohorts). We asked (1) if populations show genetic divergence between cohorts, (2) if any significant changes are present between the genetic index of cohorts and, if so, (3) whether such changes are related to the adult cohort fixation index. To address these questions, we studied 61 populations of 50 adult and 50 seedling individuals genotyped with allozyme markers. We calculated allelic richness (Ar), observed (Ho) and expected heterozygosity (He), and fixation index (f) for each population cohort; and pairwise F ST between cohorts. Seedlings were genetically similar to the adults (mean pairwise F ST = 0.014). No difference was found in the proportion of populations that showed increases and decreases of the genetic indexes over cohorts, except f, for which more populations showed a decrease. Adult fixation index had a correlation with Ho (r = 0.507, p = 3∙10 −5 ) and He (r = −0.247, p = 0.055). A mean test between cohorts revealed the maintenance of high f values in Araucaria angustifolia and Ocotea catharinensis, as well as a significant decrease in He of Euterpe edulis, species widely explored in the past. Although we only studied two cohorts, general trends and significant changes were detected, which could be important in the conservation of those six species. © 2019 Elsevier B.V.
英文关键词	Apuleia leiocarpa; Atlantic Rainforest; Dicksonia sellowiana; Natural regeneration; Podocarpus lambertii; Population monitoring
语种	英语
scopus关键词	Chromosomes; Forestry; Plants (botany); Apuleia leiocarpa; Atlantic Rainforest; Dicksonia sellowiana; Natural regeneration; Podocarpus lambertii; Population monitoring; Conservation; allele; allozyme; coniferous tree; divergence; genetic marker; heterozygosity; population genetics; rainforest; regeneration; seedling; temporal variation; Chromosomes; Conservation; Decrements; Forestry; Genetics; Natural Reforestation; Plants; Podocarpus Lambertii; Atlantic Forest; Apuleia leiocarpa; Araucaria angustifolia; Dicksonia sellowiana; Euterpe edulis; Ocotea catharinensis; Podocarpus
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156190
作者单位	Universidade Federal de Santa Catarina, Fitotecnia/Núcleo de Pesquisas em Florestas Tropicais, Florianopolis, Santa Catarina 55 48 3721 5322, Brazil; Universidade do Estado de Santa Catarina – Campus III Planalto Serrano, Engenharia Florestal, Lages, Santa Catarina, Brazil
推荐引用方式 GB/T 7714	Lauterjung M.B.,Montagna T.,Bernardi A.P.,et al. Temporal changes in population genetics of six threatened Brazilian plant species in a fragmented landscape[J],2019,435.
APA	Lauterjung M.B..,Montagna T..,Bernardi A.P..,da Silva J.Z..,da Costa N.C.F..,...&dos Reis M.S..(2019).Temporal changes in population genetics of six threatened Brazilian plant species in a fragmented landscape.Forest Ecology and Management,435.
MLA	Lauterjung M.B.,et al."Temporal changes in population genetics of six threatened Brazilian plant species in a fragmented landscape".Forest Ecology and Management 435(2019).