Matrix dominance and landscape resistance affect genetic variability and differentiation of an Atlantic Forest pioneer tree

Página do item simplificado
dc.creatorSantos, Juliana Silveira dos
dc.creatorVitorino, Luciana Cristina
dc.creatorGonçalves, Renata Fabrega
dc.creatorCortes, Marina Correa
dc.creatorAlves, Rafael Souza Cruz
dc.creatorRibeiro, Milton Cezar
dc.creatorCollevatti, Rosane Garcia
dc.date.accessioned2023-08-31T14:08:42Z
dc.date.available2023-08-31T14:08:42Z
dc.date.issued2022
dc.description.abstractContext Despite the importance of secondary forests for the maintenance of biodiversity, the impact of pioneer trees on habitat loss and fragmentation is poorly understood. Objectives We analyzed the efects of landscape structure on genetic variability (node level analyses) and genetic diferentiation (link level analyses) of the pioneer tree Cecropia hololeuca in the Atlantic Forest of southeastern Brazil. At the node level, we analyzed the efects of landscape structure (forest and pasture amount, compositional heterogeneity, number and shape of patches, and matrix dominance), topography (slope and elevation), and efective population size (Ne) on allelic richness (AR), genetic diversity (He) and inbreeding coefcient (f). At the link level, we analyzed the efect of four resistance surfaces (isolation by geographic distance, land cover, elevation, and slope) on genetic diferentiation between populations (FST, G’ST, Jost’s D). Methods We genotyped 257 individuals of C. hololeuca using eight microsatellite loci. At the node level, we calculated landscape and topographic variables at six spatial scales. At the link level, we optimized the resistance surfaces using ResistanceGA. We used a model selection approach to select the most parsimonious models. Results At the node level, matrices dominated by pastures had higher AR than landscapes dominated by Eucalyptus at the 1500 m spatial scale. At the link level, FST was best explained by slope, with lower values imposing more resistance. All resistance surfaces explained G’ST. Conclusions In addition to conserving and restoring habitats, management practices that improve matrix permeability should be adopted to favor the movement of dispersers, consequently improving natural regeneration, increasing allelic richness, and decreasing genetic diferentiation of natural populations.pt_BR
dc.identifier.citationSANTOS, Juliana Silveira dos et al. Matrix dominance and landscape resistance affect genetic variability and differentiation of an Atlantic Forest pioneer tree. Landscape Ecology, Berlin, v. 37, p. 2481–2501, 2022. DOI: 10.1007/s10980-022-01498-6. Disponível em: https://link.springer.com/article/10.1007/s10980-022-01498-6. Acesso em: 29 ago. 2023.pt_BR
dc.identifier.doi10.1007/s10980-022-01498-6
dc.identifier.issn0921-2973
dc.identifier.issne- 1572-9761
dc.identifier.urihttps://link.springer.com/article/10.1007/s10980-022-01498-6
dc.language.isoengpt_BR
dc.publisher.countryAlemanhapt_BR
dc.publisher.departmentInstituto de Ciências Biológicas - ICB (RMG)pt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectCecropiapt_BR
dc.subjectTropical forestpt_BR
dc.subjectConnectivitypt_BR
dc.subjectPasturept_BR
dc.subjectLandscape geneticspt_BR
dc.subjectSecondary forestpt_BR
dc.titleMatrix dominance and landscape resistance affect genetic variability and differentiation of an Atlantic Forest pioneer treept_BR
dc.typeArtigopt_BR

Arquivos

Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Baixar

Coleções

ICB - Artigos publicados em periódicos