Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/28385
Registro completo de metadados
Campo DCValorIdioma
dc.creatorTeodoro, Grazielle Sales-
dc.creatorBerg, Eduardo van den-
dc.creatorArruda, Rafael-
dc.date.accessioned2018-01-12T15:43:31Z-
dc.date.available2018-01-12T15:43:31Z-
dc.date.issued2013-06-11-
dc.identifier.citationTEODORO, G. S.; BERG, E. V. D.; ARRUDA, R. Metapopulation dynamics of the mistletoe and its host in savanna areas with different fire occurrence. PLoS ONE, [S. l.], v. 8, n. 6, 11 June 2013. doi: https://doi.org/10.1371/journal.pone.0065836.pt_BR
dc.identifier.urihttp://journals.plos.org/plosone/article?id=10.1371/journal.pone.0065836pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/28385-
dc.description.abstractMistletoes are aerial hemiparasitic plants which occupy patches of favorable habitat (host trees) surrounded by unfavorable habitat and may be possibly modeled as a metapopulation. A metapopulation is defined as a subdivided population that persists due to the balance between colonization and extinction in discrete habitat patches. Our aim was to evaluate the dynamics of the mistletoe Psittacanthus robustus and its host Vochysia thyrsoidea in three Brazilian savanna areas using a metapopulation approach. We also evaluated how the differences in terms of fire occurrence affected the dynamic of those populations (two areas burned during the study and one was fire protected). We monitored the populations at six-month intervals. P. robustus population structure and dynamics met the expected criteria for a metapopulation: i) the suitable habitats for the mistletoe occur in discrete patches; (ii) local populations went extinct during the study and (iii) colonization of previously non-occupied patches occurred. The ratio of occupied patches decreased in all areas with time. Local mistletoe populations went extinct due to two different causes: patch extinction in area with no fire and fire killing in the burned areas. In a burned area, the largest decrease of occupied patch ratios occurred due to a fire event that killed the parasites without, however, killing the host trees. The greatest mortality of V. thyrsoidea occurred in the area without fire. In this area, all the dead trees supported mistletoe individuals and no mortality was observed for parasite-free trees. Because P. robustus is a fire sensitive species and V. thyrsoidea is fire tolerant, P. robustus seems to increase host mortality, but its effect is lessened by periodic burning that reduces the parasite loads.pt_BR
dc.languageen_USpt_BR
dc.publisherPLoS ONEpt_BR
dc.rightsrestrictAccesspt_BR
dc.sourcePLoS ONEpt_BR
dc.subjectSavanna - Mistletoept_BR
dc.subjectHmiparasitespt_BR
dc.subjectSavanas - Viscopt_BR
dc.subjectHemiparasitaspt_BR
dc.titleMetapopulation dynamics of the mistletoe and its host in savanna areas with different fire occurrencept_BR
dc.typeArtigopt_BR
Aparece nas coleções:DBI - Artigos publicados em periódicos

Arquivos associados a este item:
Não existem arquivos associados a este item.


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.