Living at the dry limits: ecological genetics of Tillandsia landbeckii lomas in the Chilean Atacama Desert

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dc.catalogadorpau
dc.contributor.authorKoch, Marcus A.
dc.contributor.authorKleinpeter, Dorothea
dc.contributor.authorAuer, Erik
dc.contributor.authorSiegmund, Alexander
dc.contributor.authorRío López, Camilo del
dc.contributor.authorOsses Mc-Intyre, Pablo
dc.contributor.authorGarcía B., Juan Luis
dc.contributor.authorMarzol, Maria V.
dc.contributor.authorZizka, Georg
dc.contributor.authorKiefer, Christiane
dc.date.accessioned2023-05-19T20:50:11Z
dc.date.available2023-05-19T20:50:11Z
dc.date.issued2019
dc.description.abstractThe 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 Pacifc 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 km2 and demonstrated a fne-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 ftness as measured by fowering frequency, and evidence is provided that outbreeding is linked with a large-distance fying pollinator feeding occasionally as generalist on its fowers, 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 ftness, 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.
dc.fechaingreso.objetodigital2023-07-10
dc.format.extent13 páginas
dc.fuente.origenORCID
dc.identifier.doi10.1007/s00606-019-01623-0
dc.identifier.issn0378-2697
dc.identifier.urihttp://dx.doi.org/10.1007/s00606-019-01623-0
dc.information.autorucInstituto de Geografía ; Río López, Camilo del ; 0000-0002-6817-431X ; 17960
dc.information.autorucInstituto de Geografía ; Osses Mc-Intyre, Pablo ; 0000-0001-8102-7296 ; 91302
dc.information.autorucInstituto de Geografía ; García B., Juan Luis ; 0000-0002-9028-7572 ; 9823
dc.language.isoen
dc.nota.accesoContenido parcial
dc.pagina.final1053
dc.pagina.inicio1041
dc.revistaPlant Systematics and Evolution
dc.rightsacceso restringido
dc.subjectAFLP
dc.subjectAtacama desert
dc.subjectChile
dc.subjectLandscape genetics
dc.subjectTillandsia landbeckii
dc.subjectTillandsia lomas
dc.titleLiving at the dry limits: ecological genetics of Tillandsia landbeckii lomas in the Chilean Atacama Desertes_ES
dc.typeartículo
dc.volumen305
sipa.codpersvinculados17960
sipa.codpersvinculados91302
sipa.codpersvinculados9823
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