On two methods to estimate production of Eichhornia crassipes in the eutrophic Pampulha reservoir (MG, Brazil)

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...

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Bibliographic Details
Published in:Brazilian journal of biology 2002-08, Vol.62 (3), p.463-471
Main Authors: Greco, M K B, de Freitas, J R
Format: Article
Language:English
Subjects:
BIOLOGY
Biomass
biomass production
Brazil
Eichhornia - growth & development
Eichhornia crassipes (water hyacinth)
Eutrophication
Fresh Water
macrophytes
modular demography
Population Density
Seasons
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Summary: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).
ISSN:1519-6984
1678-4375
1519-6984
1678-4375
DOI:10.1590/s1519-69842002000300010