caa a22 4500 445857560 CHVBK 20180317145432.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10592-010-0165-x doi (NATIONALLICENCE)springer-10.1007/s10592-010-0165-x Genetic insights into the historical distribution of Polylepis pauta (Rosaceae) in the northeastern Cordillera Oriental of Ecuador [Elektronische Daten] [Sheika Aragundi, J. Hamrick, Kathleen Parker] Scattered patches of Polylepis forest that occur within the 3,000-4,500m altitudinal belt of the Andean Cordillera from Venezuela to Argentina have been hypothesized to be remnants of once continuous forests whose range became fragmented through anthropogenic activities that probably preceded the Spanish conquest. Allozyme variation of Polylepis pauta from 12 forest populations in three adjacent watersheds in Northeastern Ecuador was investigated to assess whether observed patterns of gene diversity were consistent with a more continuous historical range of the species and to evaluate the populations' potential for restoration. Genetic diversity and polymorphism in P. pauta populations were higher than mean values for most wind pollinated and dispersed temperate and tropical tree species with regional distributions. Genetic differentiation among watersheds was lower than among populations within each watershed. Isolation by distance was not evident and several populations from different watersheds were more genetically similar than populations from the same watershed. Larger forest patches with broader altitudinal ranges had more alleles. Forest patches on steeper slopes and at higher elevations supported populations with less genetic diversity; this might have resulted from the predominance of vegetative reproduction in these landslide prone areas. The amount of genetic diversity maintained by P. pauta, coupled with low genetic differentiation among populations within and among watersheds, is consistent with a more continuous historical range of the species in Northeastern Ecuador and point to the Oyacachi basin as having the highest levels of genetic diversity. Springer Science+Business Media B.V., 2010 Polylepis pauta nationallicence Allozyme variation nationallicence Isolation by distance nationallicence Historical range nationallicence Landscape genetics nationallicence Forest restoration nationallicence Aragundi Sheika Escuela de Geografía, PUCE, Av. 12 de Octubre y Roca, Torre 2, Piso 9, Quito, Ecuador aut Hamrick J. Department of Plant Biology, University of Georgia, 30602, Athens, GA, USA aut Parker Kathleen Department of Geography, University of Georgia, 30602, Athens, GA, USA aut Conservation Genetics Springer Netherlands 12/3(2011-06-01), 607-618 1566-0621 12:3<607 2011 12 10592 https://doi.org/10.1007/s10592-010-0165-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10592-010-0165-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Aragundi Sheika Escuela de Geografía, PUCE, Av. 12 de Octubre y Roca, Torre 2, Piso 9, Quito, Ecuador aut NATIONALLICENCE 700 1- Hamrick J. Department of Plant Biology, University of Georgia, 30602, Athens, GA, USA aut NATIONALLICENCE 700 1- Parker Kathleen Department of Geography, University of Georgia, 30602, Athens, GA, USA aut NATIONALLICENCE 773 0- Conservation Genetics Springer Netherlands 12/3(2011-06-01), 607-618 1566-0621 12:3<607 2011 12 10592 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer