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Title: Influência de variáveis meteorológicas na produção de liteira na Estação Científica Ferreira Penna, Caxiuanã, Pará
Other Titles: Influence of meteorological variables in the litterfall production in the Ferreira Penna Scientific Station, Caxiuanã, Pará, Brazil
metadata.dc.creator: SILVA, Rosecélia Moreira da
COSTA, José Maria Nogueira da
RUIVO, Maria de Lourdes Pinheiro
COSTA, Antonio Carlos Lôla da
ALMEIDA, Samuel Soares
Keywords: Liteira
Floresta amazônica
Variáveis meteorológicas
Deficiência hídrica
Amazon Forest
Meteorological Variables
Water deficit
Issue Date: Sep-2009
Publisher: Instituto Nacional de Pesquisas da Amazônia
Citation: SILVA, Rosecélia Moreira da et al. Influência de variáveis meteorológicas na produção de liteira na Estação Científica Ferreira Penna, Caxiuanã, Pará. Acta Amazonica. Manaus, v. 39, n. 3, p. 573-582, set. 2009. DOI: Disponível em: Acesso em:.
Abstract: The evaluation of the influence on the exclusion of rainfall on the variation of litter production was done in Caxiuanã Forest Reserve at Ferreira Penna Scientific Station (1º 42 ' S, 51º 31 ' W) during the period from March, 2001 to February, 2003 with the objective of identifying the main meteorological variables and the main components of the monthly water balance that affected the production and decomposition of litter. This work was part of the subproject EXPERIMENT OF DROUGHT IN THE FOREST (ESECAFLOR), that aimed to study the long term impacts of drought on the water, energy and carbon dioxide fluxes in the Amazon forest. The sazonality of total litter production and its components (leaves, brushwood and reproductive parts) was well established, with the occurrence of a greater litter production during the months with lower precipitation. The monthly litter production during the experimental period ranged from 294.78 kg.ha-1 to 1758.69 kg.ha-1, with an average of 777.70 kg.ha-1. The total litter production was partitioned in leaves (61.40 %), brushwoods (18.45 %) and reproductive parts (20.14 %). The results obtained in the undisturbed plot showed a higher litter production, about 25 %, compared to the litter production in the plot under the exclusion of water. The variables more strongly correlated with litter production and its components were wind speed, global solar radiation density flux, photosynthetic active radiation density flux, soil temperature at 5 cm depth, precipitation, soil water deficit and water surplus.
ISSN: 1809-4392
Appears in Collections:Artigos Científicos - FAMET/IG

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