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Braz. j. biol ; 62(3)Aug. 2002.
Article in English | LILACS-Express | LILACS, VETINDEX | ID: biblio-1467635

ABSTRACT

This paper deals with variations in biomass and in the production of Eichhornia crassipes (water hyacinth) in a eutrophic tropical reservoir. Net production was assessed by both a traditional method and a demographic approach. The initial biomass ranges from 96 g DW.m-2 to a maximum of 2027 g DW.m-2. Net production estimates varied greatly according to which method was used to calculate them (traditional: 20.6 ton DW.hectare-1.year-1, demographic: 226.9 ton DW.year-1).


Este estudo mostra as variações da biomassa e da produção de Eichhornia crassipes em um reservatório eutrófico tropical. A produção líquida foi estimada por intermédio do método tradicional e do demográfico. A biomassa inicial de 96 g PS.m-2chegou ao máximo de 2.027 g PS.m-2 A produção líquida variou de acordo com o método utilizado para sua estimativa (tradicional: 20,6 ton PS. ha-1.ano-1, demográfico: 226,9 ton PS.ano-1).

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