caa a22 4500 445857358 CHVBK 20180317145432.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10592-011-0183-3 doi (NATIONALLICENCE)springer-10.1007/s10592-011-0183-3 Genetic diversity, genetic drift and mixed mating system in small subpopulations of Dyckia ibiramensis , a rare endemic bromeliad from Southern Brazil [Elektronische Daten] [Karina Hmeljevski, Ademir Reis, Tiago Montagna, Maurício dos Reis] Dyckia ibiramensis is a naturally rare, endemic and threatened bromeliad which occurs naturally on 4km of rocky river outcroppings in Southern Brazil. For this study, subpopulations of the species were characterized based on size and genetics, to compile information for in situ and ex situ conservation strategies. A census of the rosettes was undertaken for each subpopulation and seven allozyme polymorphic loci were used to estimate genetic diversity and structure of adults and offspring and assess the mating system. In general, the subpopulations were small and most of the rosettes were aggregated into clumps. The species showed a high genetic diversity ($$ \hat{H}_{e} = 0.219 $$) and significant fixation index ($$ \hat{f} = 0.642, $$P≤0.05). The estimate of differentiation among all adult subpopulations indicate pronounced genetic structure ($$ \hat{G}^{\prime}_{ST} = 0.674 $$). D. ibiramensis has a mixed mating system and multilocus outcrossing rates $$ \hat{t}_{m} $$ were variable between subpopulations. This study demonstrates the importance of in situ preservation of all subpopulations for the maintenance of species diversity. For effective ex situ conservation, it would be necessary to collect seeds from 52 to 99 seed-rosettes, depending on the target population. Springer Science+Business Media B.V., 2011 Allozyme nationallicence Bromeliaceae nationallicence Conservation nationallicence Founder effects nationallicence Metapopulation nationallicence Hmeljevski Karina Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Pacheco Leão 915, Jardim Botânico, 22460-030, Rio de Janeiro, RJ, Brazil aut Reis Ademir Laboratório de Restauração Ambiental Sistêmica, Departamento de Botânica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, CP 476, 88040-900, Florianópolis, SC, Brazil aut Montagna Tiago Núcleo de Pesquisas em Florestas Tropicais, Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Rodovia Admar Gonzaga 1346, Itacorubi, 88034-001, Florianópolis, SC, Brazil aut dos Reis Maurício Núcleo de Pesquisas em Florestas Tropicais, Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Rodovia Admar Gonzaga 1346, Itacorubi, 88034-001, Florianópolis, SC, Brazil aut Conservation Genetics Springer Netherlands 12/3(2011-06-01), 761-769 1566-0621 12:3<761 2011 12 10592 https://doi.org/10.1007/s10592-011-0183-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10592-011-0183-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hmeljevski Karina Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Pacheco Leão 915, Jardim Botânico, 22460-030, Rio de Janeiro, RJ, Brazil aut NATIONALLICENCE 700 1- Reis Ademir Laboratório de Restauração Ambiental Sistêmica, Departamento de Botânica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, CP 476, 88040-900, Florianópolis, SC, Brazil aut NATIONALLICENCE 700 1- Montagna Tiago Núcleo de Pesquisas em Florestas Tropicais, Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Rodovia Admar Gonzaga 1346, Itacorubi, 88034-001, Florianópolis, SC, Brazil aut NATIONALLICENCE 700 1- dos Reis Maurício Núcleo de Pesquisas em Florestas Tropicais, Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Rodovia Admar Gonzaga 1346, Itacorubi, 88034-001, Florianópolis, SC, Brazil aut NATIONALLICENCE 773 0- Conservation Genetics Springer Netherlands 12/3(2011-06-01), 761-769 1566-0621 12:3<761 2011 12 10592 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer