Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.07.011 |
Extensive sib-mating in a refugial population of beech (Fagus sylvatica) growing along a lowland river | |
Ouayjan, Adib; Hampe, Arndt | |
2018 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2018 |
卷号 | 407页码:66-74 |
文章类型 | Article |
语种 | 英语 |
国家 | France |
英文摘要 | Many temperate and boreal tree species have small and scattered populations near the low-latitude margins of their range that have persisted over extended periods of time in microrefugia. It remains poorly understood how patterns of mating and gene flow influence key components for their long-term persistence such as effective population size or genetic diversity. Yet such information is critical for designing effective protection measures and informing programs for the conservation of forest genetic resources. Here we investigate the mating system and pollen dispersal of a long-term refugial population of beech (Fagus sylvatica), a major European forest tree. This population stretches over ca. 7 km along the ravines of a small lowland river in SW France. We exhaustively mapped the adult population (n = 932 trees) and collected seed families (n = 450 seeds) from 30 mother trees spread across the stand. All individuals were genotyped at 113 SNP markers and submitted to paternity analyses. We estimated various mating parameters and tested whether among-individual variation was related with the ecological neighbourhood of the mother tree. A unique father could be identified for all seeds analysed. We detected neither pollen immigration nor selfing events. Instead, we observed extensive mating between neighbouring trees that resulted in a very steep decline of the pollen dispersal kernel and a low effective number of fathers (median N-ep = 7.9). In turn, male fecundity was tightly related with the distance between mates. The adult population showed an exceptionally strong and far-reaching spatial genetic structure indicating that neighbouring trees are most often sibs. The predominant mating between these neighbours suggests that patterns of reproduction and pollen flow are not constrained by cross-compatibility issues. Instead, dense conspecific neighbourhoods even tend to bar long-distance pollen flow by saturating the stigmas of mother trees through pollen swamping. The observed patterns are a direct consequence of the refugial habitat that imposes the population's linear distribution and whose dense vegetation represents a further obstacle to pollen dispersal. The elevated capacity of sib-mating might be a microevolutionary consequence of the population's long-term persistence in isolation. The resulting spatial genetic structure and the critical role of tree density in assuring an effective reproduction have important consequences for the design of forest genetic resources programs as well as for the conservation management of refugial and other riparian tree populations. (C) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | Forest genetic resources Long-term population persistence Mating system Pollen cloud Riparian forest Spatial genetic structure |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418214300009 |
WOS关键词 | SPATIAL GENETIC-STRUCTURE ; POLLEN DISPERSAL ; EUROPEAN BEECH ; HABITAT FRAGMENTATION ; PLANT-POPULATIONS ; TREE POPULATIONS ; SEED DISPERSAL ; CLIMATE-CHANGE ; NATURAL-POPULATIONS ; COMPUTER-PROGRAM |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/22328 |
专题 | 气候变化 |
作者单位 | Univ Bordeaux, INRA, BioGeCo, F-33610 Cestas, France |
推荐引用方式 GB/T 7714 | Ouayjan, Adib,Hampe, Arndt. Extensive sib-mating in a refugial population of beech (Fagus sylvatica) growing along a lowland river[J]. FOREST ECOLOGY AND MANAGEMENT,2018,407:66-74. |
APA | Ouayjan, Adib,&Hampe, Arndt.(2018).Extensive sib-mating in a refugial population of beech (Fagus sylvatica) growing along a lowland river.FOREST ECOLOGY AND MANAGEMENT,407,66-74. |
MLA | Ouayjan, Adib,et al."Extensive sib-mating in a refugial population of beech (Fagus sylvatica) growing along a lowland river".FOREST ECOLOGY AND MANAGEMENT 407(2018):66-74. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Ouayjan, Adib]的文章 |
[Hampe, Arndt]的文章 |
百度学术 |
百度学术中相似的文章 |
[Ouayjan, Adib]的文章 |
[Hampe, Arndt]的文章 |
必应学术 |
必应学术中相似的文章 |
[Ouayjan, Adib]的文章 |
[Hampe, Arndt]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论