Survival of seedlings planted in gaps after harvesting in a terra firme rain forest in Paragominas region in the Brazilian Amazonia

Survival of seedlings planted in 400 gaps created by reduced impact logging in a terra firme forest in the Eastern Amazonia was evaluated. 3,818 seedlings from 17 species occurring in the study area, except for Schizolobium amazonicum (parica), which is rare in natural forests of Paragominas region,...

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Bibliographic Details
Published in:Acta amazonica 2010-03, Vol.40 (1), p.171-178
Main Authors: Gomes, J M, de Carvalho, JOP, da Silva, MG, Nobre, DNV, Taffarel, M, Ferreira, JER, Santos, RNJ
Format: Article
Language:Portuguese
Subjects:
Amara
Cedrela odorata
Cordia
Jacaranda
Manilkara
Parkia
Pouteria
Schefflera
Simarouba
Sterculia
Tabebuia
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Summary:Survival of seedlings planted in 400 gaps created by reduced impact logging in a terra firme forest in the Eastern Amazonia was evaluated. 3,818 seedlings from 17 species occurring in the study area, except for Schizolobium amazonicum (parica), which is rare in natural forests of Paragominas region, were planted in the gaps. Spacing of planted seedlings was 5m. According to survival of seedlings during 11 months after planting, the species Schizolobium amazonicum, Cedrela odorata, Jacaranda copaia, Manilkara huberi, Astronium gracile, Pouteria bilocularis, Tabebuia impetiginosa, Pseudopiptadenia suaveolens, Cordia goeldiana, Parkia gigantocarpa, Simarouba amara, Sterculia pilosa, Laetia procera, Dinizia excelsa and Schefflera morototoni can be suggested for enriching in gaps created by reduced impact logging. Complementary studies, mainly related to growth rates of seedlings, must be carried out and in a period longer than the present study to confirm the benefits of enrichment planting in gaps as an alternative to boost forest productivity and economic value of managed natural forest in the Brazilian Amazon.Original Abstract: Analisou-se a sobrevivencia de mudas plantadas em 400 clareiras causadas por exploracao florestal de impacto reduzido, em floresta de terra firme na Amazonia Oriental. Foram plantadas 3.818 mudas de 17 especies, das quais apenas Schizolobium amazonicum nao ocorre na area de estudo. A distancia entre as mudas plantadas foi de aproximadamente 5m. As avaliacoes ocorreram em 2005 e 2006. Com base na sobrevivencia das mudas aos 11 meses apos o plantio, as especies indicadas para o enriquecimento de clareiras sao: Schizolobium amazonicum, Cedrela odorata, Jacaranda copaia, Manilkara huberi, Astronium gracile, Pouteria bilocularis, Tabebuia impetiginosa, Pseudopiptadenia suaveolens, Cordia goeldiana, Parkia gigantocarpa, Simarouba amara, Sterculia pilosa, Laetia procera, Dinizia excelsa e Schefflera morototoni. Estudos sobre a taxa de crescimento, em periodos mais longos, sao necessarios para confirmar a utilizacao dessas especies em plantios de enriquecimento de clareiras oriundas de exploracao florestal, como alternativa para aumentar a produtividade e o valor economico das florestas naturais manejadas na Amazonia brasileira.
ISSN:0044-5967