title: On two methods to estimate production of Eichhornia crassipes in the eutrophic Pampulha reservoir (MG, Brazil).
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).
authors.affiliation: Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, CEP 31270-901, Belo Horizonte, MG, Brazil. greco@icb.ufmg.br
authors.forename: M K B
authors.initials: MK
authors.lastname: Greco
authors.forename: J R
authors.initials: JR
authors.lastname: de Freitas
mesh_terms: D018533:Biomass; D001938:Brazil; D031806:Eichhornia / Q000254:growth & development*; D005068:Eutrophication; D005618:Fresh Water; D011156:Population Density; D012621:Seasons