干旱区生态环境知识资源中心(Arid): Living at the dry limits: ecological genetics of Tillandsia landbeckii lomas in the Chilean Atacama Desert

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DOI	10.1007/s00606-019-01623-0
	Living at the dry limits: ecological genetics of Tillandsia landbeckii lomas in the Chilean Atacama Desert
	Koch, Marcus A.1,2; Kleinpeter, Dorothea 1; Auer, Erik 1; Siegmund, Alexander 2,3; del Rio, Camilo 4,5; Osses, Pablo 5; Garcia, Juan-Luis 4,5; Marzol, Maria, V 6; Zizka, Georg 7; Kiefer, Christiane 1
通讯作者	Koch, Marcus A.
来源期刊	PLANT SYSTEMATICS AND EVOLUTION
ISSN	0378-2697
EISSN	2199-6881
出版年	2019
卷号	305 期号:10 页码:1041-1053
英文摘要	The northern Chilean Atacama Desert is among those regions on Earth where life exists at its dry limits. There is almost zero rainfall in its core zone, and the only source of water is a spatio-temporally complex fog system along the Pacific coast, which is reaching far into the hyperarid mainland. Hardly any vascular plants grow in these areas, and, thus, it is intriguing to be faced with a vegetation-type build-up by one single and highly specialized bromeliad species, Tillandsia landbeckii Phil., forming regular linear structures in a sloped landscape. We studied the genetic make-up of a population system extending an area of approximately 1500 km(2) and demonstrated a fine-scale correlation of genetic diversity with spatial population structure and following an elevational gradient of approximately 150 m. Increase in genetic diversity is correlated with increased fitness as measured by flowering frequency, and evidence is provided that outbreeding is linked with a large-distance flying pollinator feeding occasionally as generalist on its flowers, but not using the plant as source for larvae feeding. Our data demonstrate that establishment of linear vegetation structure is in principle a process driven by clonal growth and propagation of ramets over short distances. However, optimal conditions (slope, elevation, fog occurrence) for linear growth pattern formation also increase sexual plant reproductive fitness, thus providing the reservoir for newly combined genetic variation and counteracting genetic uniformity. Our study highlights the Tillandsia vegetation, also called Tillandsia lomas, as unique and genetically diverse system, which is highly threatened by global climate change and disturbance of the coastal fog system.
英文关键词	AFLP Atacama desert Chile Landscape genetics Tillandsia landbeckii Tillandsia lomas
类型	Article
语种	英语
国家	Germany ; Chile ; Spain
收录类别	SCI-E
WOS记录号	WOS:000493949600001
WOS关键词	SPATIAL-DISTRIBUTION ; VEGETATION ; PHYLOGENETICS ; BROMELIACEAE ; INFERENCE ; LATIFOLIA ; SOUTH ; AFLP
WOS类目	Plant Sciences ; Evolutionary Biology
WOS研究方向	Plant Sciences ; Evolutionary Biology
EI主题词	2019-11-04
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310746
作者单位	1.Heidelberg Univ, Ctr Organismal Studies, D-69120 Heidelberg, Germany; 2.Heidelberg Univ, Heidelberg Ctr Environm HCE, D-69120 Heidelberg, Germany; 3.Heidelberg Univ Educ, Dept Geog, Res Grp Earth Observat Rgeo, D-69115 Heidelberg, Germany; 4.Pontificia Univ Catolica Chile, Inst Geog, Santiago, Chile; 5.Pontificia Univ Catolica Chile, Ctr UC Desierto Atacama, Santiago, Chile; 6.Univ La Laguna, Dept Geog & Hist, Tenerife 38200, Spain; 7.Goethe Univ, Inst Ecol Evolut & Divers, Dept Divers & Evolut Higher Plants, D-60323 Frankfurt, Germany
推荐引用方式 GB/T 7714	Koch, Marcus A.,Kleinpeter, Dorothea,Auer, Erik,et al. Living at the dry limits: ecological genetics of Tillandsia landbeckii lomas in the Chilean Atacama Desert[J],2019,305(10):1041-1053.
APA	Koch, Marcus A..,Kleinpeter, Dorothea.,Auer, Erik.,Siegmund, Alexander.,del Rio, Camilo.,...&Kiefer, Christiane.(2019).Living at the dry limits: ecological genetics of Tillandsia landbeckii lomas in the Chilean Atacama Desert.PLANT SYSTEMATICS AND EVOLUTION,305(10),1041-1053.
MLA	Koch, Marcus A.,et al."Living at the dry limits: ecological genetics of Tillandsia landbeckii lomas in the Chilean Atacama Desert".PLANT SYSTEMATICS AND EVOLUTION 305.10(2019):1041-1053.