Navegando por Autor "MENDES, Fernanda da Silva"
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Item Acesso aberto (Open Access) Crescimento de espécies arbóreas em uma floresta natural de terra firme após a colheita de madeira e tratamentos silviculturais, no município de Paragominas, Pará, Brasil(Universidade Federal de Santa Maria, 2015-12) SOUZA, Deivison Venício; CARVALHO, João Olegário Pereira de; MENDES, Fernanda da Silva; MELO, Lia de Oliveira; SILVA, José Natalino Macedo; JARDIM, Fernando Cristóvam da SilvaThis paper deals with the effects of silvicultural treatments on growth rates of a terra firme natural forest after reduced impact logging (RIL). The study was carried out in the Rio Capim Forest Management Unit, which belongs to Cikel Brasil Verde Madeiras Ltda., located in the municipality of Paragominas, PA. The experimental area comprised 500 ha, where five treatments (100 ha each) each with four replications (25 ha each) were established. The replications were randomly distributed in the 500 ha sample area. The following treatments were applied: T1 - RIL + classical liberation thinning (girdling of competing trees) and climber cutting; T2 - RIL + modified liberation thinning (girdling of competing trees) and climber cutting; T3 - RIL + climber cutting; T6 - only RIL; T7 - unlogged forest (control). In the four years of monitoring forest, after logging and silvicultural treatments, T2 and T3 had the highest diameter growth rates. But the four-year period is not enough to suggest the best treatment, based on diameter growth rate, in response to girdling trees and climber cutting. At species level, growth rate varied between treatments and within treatments. In general, the lower diameter growth rates were observed in the unlogged forest.Item Acesso aberto (Open Access) Dinâmica da estrutura da vegetação do sub-bosque sob influência da exploração em uma floresta de terra firme no município de Moju - PA(Universidade Federal de Santa Maria, 2013-06) MENDES, Fernanda da Silva; JARDIM, Fernando Cristóvam da Silva; CARVALHO, João Olegário Pereira de; SOUZA, Deivison Venício; ARAÚJO, Clívia Bezerra; LEAL, Eduardo da Silva; OLIVEIRA, Mariana Gomes deThe structure dynamics of an understorey vegetation influenced by gaps caused by reduced impact logging was analyzed during 12 years in a terra firme rain forest in the municipality of Moju, Pará state, eastern Brazilian Amazon forest. Angiosperm individuals from 10 cm height up to 5 cm DBH were surveyed in a 468 m² sample area in six occasions (1998, 1999, 2000, 2001, 2007 and 2010), they were analyzed considering their life-forms (trees, shrub, lianas, herbs and palms), abundance, frequency, size classes (CT1 = 10 cm ≤HT <50 cm; CT2 = 50 cm ≤HT ≤ 130 cm; CT3 = 130 cm