Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/18090
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dc.contributor.authorScoles, Ricardo-
dc.contributor.authorGribel, Rogério-
dc.date.accessioned2020-06-15T21:51:33Z-
dc.date.available2020-06-15T21:51:33Z-
dc.date.issued2012-
dc.identifier.urihttps://repositorio.inpa.gov.br/handle/1/18090-
dc.description.abstractThis study examined the harvest of nuts from Brazil nut trees (Bertholletia excelsa) in the valley of the Trombetas River, a 760-km tributary on the northern bank of the Amazon River in Pará state, Brazil. The region is characterised by old-growth forests dominated by Brazil nut trees. Demographic data were obtained from twenty-five 50-m × 1000-m transects with different harvest intensities (total area = 125. ha) established approximately along the trails used by Brazil nut harvesters. For each transect, correlations were calculated between regeneration indicators (seedling, sapling, and juvenile densities) and potential ecological and demographic variables. The Brazil nut populations in the region were characterised by a low proportion of juveniles (7.8% of trees had a 10 cm < diameter at breast height - DBH < 40 cm), a dominance of large trees (DBH > 100 cm), and a tendency towards old growth (25.5% of trees had a DBH > 160cm). There were no seedlings in 52% of the transects, and 80% of the transects had no saplings. The low regeneration levels observed were independent of both harvest intensity and the dispersive activity of agoutis. An analysis of the regeneration indicators and the possible explanatory variables showed that harvests were not responsible for the low regeneration levels observed in the region. Furthermore, in areas with shorter distances between the points of harvest and first transport, the densities of saplings and juveniles were greater. We conclude that the restrictions on Brazil nut harvesting that are intended to improve the regeneration of Brazil nut trees are of little or no value. We propose the implementation of compensatory measures involving local communities and the promotion of seedling enrichment in gaps, forest edges, and disturbed areas, with the goal of promoting the growth of new generations of Brazil nut trees in the region. © 2011 Elsevier B.V.en
dc.language.isoenpt_BR
dc.relation.ispartofVolume 265, Pags. 71-81pt_BR
dc.rightsRestrito*
dc.subjectAmazon Riveren
dc.subjectAmazoniaen
dc.subjectBertholletia Excelsaen
dc.subjectBrazil Nuten
dc.subjectCompensatory Measureen
dc.subjectDemographic Dataen
dc.subjectDemographic Variablesen
dc.subjectDiameter-at-breast Heightsen
dc.subjectExplanatory Variablesen
dc.subjectForest Edgeen
dc.subjectHarvest Intensityen
dc.subjectJuvenile Densityen
dc.subjectLocal Communityen
dc.subjectOld Growthen
dc.subjectOld-growth Foresten
dc.subjectRegenerationen
dc.subjectRiver Valleyen
dc.subjectConservationen
dc.subjectHarvestingen
dc.subjectPopulation Statisticsen
dc.subjectRiversen
dc.subjectReforestationen
dc.subjectDicotyledonen
dc.subjectDominanceen
dc.subjectForest Edgeen
dc.subjectForest Managementen
dc.subjectHabitat Conservationen
dc.subjectJuvenileen
dc.subjectOld-growth Foresten
dc.subjectRegenerationen
dc.subjectSaplingen
dc.subjectSeedling Establishmenten
dc.subjectTimber Harvestingen
dc.subjectBertholletiaen
dc.subjectBiological Populationsen
dc.subjectConservationen
dc.subjectGrowthen
dc.subjectHarvestingen
dc.subjectReforestationen
dc.subjectRiversen
dc.subjectStatisticsen
dc.subjectAmazon Riveren
dc.subjectAmazoniaen
dc.subjectPara [brazil]en
dc.subjectTrombetas Riveren
dc.subjectTrombetas Valleyen
dc.subjectBertholletia Excelsaen
dc.subjectDasyproctaen
dc.titleThe regeneration of Brazil nut trees in relation to nut harvest intensity in the Trombetas River valley of Northern Amazonia, Brazilen
dc.typeArtigopt_BR
dc.identifier.doi10.1016/j.foreco.2011.10.027-
dc.publisher.journalForest Ecology and Managementpt_BR
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