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

Brazilian Journal of Biology

M. K. B. GRECO¹  J. R. de FREITAS¹ 

[1] Universidade Federal de Minas Gerais;

关键词: Eichhornia crassipes (water hyacinth);    biomass production;    modular demography;    macrophytes;   

DOI  :  10.1590/S1519-69842002000300010

来源: DOAJ

【 摘 要 】

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).

【 授权许可】

Unknown