Received: 20 September 2016 | Revised: 9 January 2017 | Accepted: 28 January 2017 DOI: 10.1002/ece3.3038 ORIGINAL RESEARCH Do plant populations on distinct inselbergs talk to each other? A case study of genetic connectivity of a bromeliad species in an Ocbil landscape Karina Vanessa Hmeljevski1 | Alison Gonçalves Nazareno2 | Marcelo Leandro Bueno3 | Maurício Sedrez dos Reis4 | Rafaela Campostrini Forzza1 1Rio de Janeiro Botanical Garden, Rio de Janeiro, RJ, Brazil Abstract 2Department of Botany, University of São Here, we explore the historical and contemporaneous patterns of connectivity among Paulo, São Paulo, SP, Brazil Encholirium horridum populations located on granitic inselbergs in an Ocbil landscape 3Department of Botany, Laboratory of Ecology within the Brazilian Atlantic Forest, using both nuclear and chloroplast microsatellite and Evolution of Plants, University of Viçosa, Viçosa, MG, Brazil markers. Beyond to assess the E. horridum population genetic structure, we built spe- 4Federal University of Santa Catarina, cies distribution models across four periods (current conditions, mid- Holocene, Last Florianópolis, SC, Brazil Glacial Maximum [LGM], and Last Interglacial) and inferred putative dispersal corridors Correspondence using a least- cost path analysis to elucidate biogeographic patterns. Overall, high and Alison Gonçalves Nazareno, Department of Botany, University of São Paulo, São Paulo, significant genetic divergence was estimated among populations for both nuclear and SP, Brazil. plastid DNA (ΦST(n) = 0.463 and ΦST(plastid) = 0.961, respectively, p < .001). For nuclear Email:
[email protected] and genome, almost total absence of genetic admixture among populations and very low Rafaela Campostrini Forzza, Rio de Janeiro migration rates were evident, corroborating with the very low estimates of immigra- Botanical Garden, Rio de Janeiro, RJ, Brazil.