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Ciência Florestal
Centro de Pesquisas Florestais - CEPEF, Departamento de Ciências Florestais - DCFL, Programa de Pós Graduação em Engenharia Florestal - PPGEF
ISSN: 0103-9954
EISSN: 0103-9954
Vol. 21, No. 3, 2011, pp. 479-486
Bioline Code: cf11048
Full paper language: Portuguese
Document type: Research Article
Document available free of charge

Ciência Florestal, Vol. 21, No. 3, 2011, pp. 479-486

 en Dominant species in litter deposition in a seasonal deciduous forest fragment in Rio Grande do Sul state
Schumacher, Mauro Valdir; Trüby, Peter; Marafiga, Joseane Marian; Viera, Márcio & Szymczak, Denise Andréia

Abstract

This study had as objective to evaluate litter total deposition and litter from main species from Seasonal Deciduous Forest, in Itaara, RS. Thirty circular metal collectors were allocated in six plots. The litter was collected monthly, from January 2006 to December 2007. The litter was separated in leaves, thin branches (diameter < 0.5 cm) and miscellany (flowers, fruits, seeds and non identified plants). The leaves were separated considering the most representative species in the forest and the others were classified as "others". The average annual litter deposition was 5.85 Mg ha-1 year-1, composed 63.2% of leaves, 19.6% of miscellany and 17.1% of thin branches. Parapiptadenia rigida check for this species in other resources , Ocotea pulchella check for this species in other resources and Matayba elaeagnoides check for this species in other resources were responsible for about 30% from total litter deposition. The leaves deposition of Lithraea molleoides check for this species in other resources , Cupania vernalis check for this species in other resources , Nectandra megapotamica check for this species in other resources and Matayba elaeagnoides check for this species in other resources increased significantly when rainfall increased and Parapiptadenia rigida check for this species in other resources increased when the air temperature decreased.

Keywords
native species; organic material; forest sustainability

 
 pt Espécies predominantes na deposição de serapilheira em fragmento de Floresta Estacional Decidual no Rio Grande do Sul
Schumacher, Mauro Valdir; Trüby, Peter; Marafiga, Joseane Marian; Viera, Márcio & Szymczak, Denise Andréia

Resumo

Objetivou-se avaliar a deposição total de serapilheira e das principais espécies encontradas na Floresta Estacional Decidual no município de Itaara, RS. Foram utilizados 30 coletores metálicos de formato circular alocados em seis parcelas. O material depositado foi coletado mensalmente entre janeiro de 2006 a dezembro de 2007. A serapilheira foi separada nas frações folhas, galhos finos (diâmetro < 0,5 cm) e miscelânea (flores, frutos, sementes e restos vegetais não identificáveis). Além disso, as folhas foram separadas de acordo com as espécies mais representativas da floresta e as demais foram classificadas como "outras". A deposição média anual de serapilheira foi de 5,85 Mg ha-1 ano-1, sendo composta por 63,2% de folhas, 19,6% de miscelânea e 17,1% de galhos finos. Parapiptadenia rigida check for this species in other resources , Ocotea pulchella check for this species in other resources e Matayba elaeagnoides check for this species in other resources , foram responsáveis por cerca de 30% da deposição total de serapilheira. A deposição de folhas da Lithraea molleoides check for this species in other resources , Cupania vernalis check for this species in other resources , Nectandra megapotamica check for this species in other resources e Matayba elaeagnoides check for this species in other resources aumentaram significativamente com o aumento da pluviosidade e a da Parapiptadenia rigida check for this species in other resources com a diminuição da temperatura do ar.

Palavras-chave
espécies nativas; material orgânico; sustentabilidade florestal

 
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