Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/18128
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dc.contributor.authorCarneiro, Francimary da Silva-
dc.contributor.authorLacerda, André Eduardo Biscaia de-
dc.contributor.authorLemes, Maristerra R.-
dc.contributor.authorGribel, Rogério-
dc.contributor.authorKanashiro, Milton-
dc.contributor.authorWadt, Lúcia Helena de Oliveira-
dc.contributor.authorMagno Sebbenn, Alexandre-
dc.date.accessioned2020-06-15T21:51:53Z-
dc.date.available2020-06-15T21:51:53Z-
dc.date.issued2011-
dc.identifier.urihttps://repositorio.inpa.gov.br/handle/1/18128-
dc.description.abstractUsing nine microsatellite loci, we studied the effects of selective logging on genetic diversity, mating system and pollen dispersal in a population of the tree species Hymenaea courbaril, located in a 546ha plot in the Tapajós National Forest, Pará State, Brazil. We analyzed 250 offspring (nursery reared seedlings) collected after a logging episode from 14 open-pollinated seed trees. These were compared to 367 seedlings from 20 open-pollinated seed trees previously collected from the pre-logging primary forest. The genetic diversity was significantly lower in the post-logging seed cohort. In contrast to the pre-logging population, significant levels of selfing were detected in the post-logging population (tm=0.962, P<0.05). However, correlated matings were reduced and the effective number of pollen donors almost doubled after harvesting (3.8 against 7.2). Logging also reduced pollen immigration into the plot (from 55% to 38%) and we found no significant correlation between the size of the pollen donors and the number of seeds fathered. Inside the plot, pollen dispersal distance was shorter before logging than after (827 and 952m, respectively) and the reproductive pollination neighbor area (Aep) was larger (average of 178ha). The individual and average variance effective population size within families (ranged from 1.80 to 3.21, average of 2.47) was lower than expected in panmictic populations (Ne=4). The results indicate that while logging greatly reduced the levels of genetic diversity after logging, it also increased genetic recombination within the population and constrained crossing among related individuals. The results show that low-density tropical tree species such as H. courbaril, when harvested in moderate levels may be resilient to a reduction in the reproductive population and may maintain similar levels of outcrossing and pollen dispersal after logging. © 2011 Elsevier B.V.en
dc.language.isoenpt_BR
dc.relation.ispartofVolume 262, Número 9, Pags. 1758-1765pt_BR
dc.rightsRestrito*
dc.subjectGene Flowsen
dc.subjectPollen Dispersalen
dc.subjectReduced-impact Loggingen
dc.subjectSsr Locien
dc.subjectTropical Treeen
dc.subjectBiodiversityen
dc.subjectDna Sequencesen
dc.subjectForestryen
dc.subjectGenesen
dc.subjectPlant Extractsen
dc.subjectSeeden
dc.subjectPopulation Statisticsen
dc.subjectAutogamyen
dc.subjectDispersalen
dc.subjectEffective Population Sizeen
dc.subjectEpisodic Eventen
dc.subjectGene Flowen
dc.subjectGenetic Markeren
dc.subjectLegumeen
dc.subjectSelective Loggingen
dc.subjectTropical Foresten
dc.subjectBiodiversityen
dc.subjectBiological Populationsen
dc.subjectExtractivesen
dc.subjectForestryen
dc.subjectGenesen
dc.subjectLoggingen
dc.subjectNucleic Acidsen
dc.subjectPlantsen
dc.subjectPollenen
dc.subjectRiversen
dc.subjectSeedsen
dc.subjectStatisticsen
dc.subjectTropical Atmospheresen
dc.subjectAmazonasen
dc.subjectFabaceaeen
dc.subjectHymenaeaen
dc.subjectHymenaea Courbarilen
dc.titleEffects of selective logging on the mating system and pollen dispersal of Hymenaea courbaril L. (Leguminosae) in the Eastern Brazilian Amazon as revealed by microsatellite analysisen
dc.typeArtigopt_BR
dc.identifier.doi10.1016/j.foreco.2011.07.023-
dc.publisher.journalForest Ecology and Managementpt_BR
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