Artigo
Influence of water level variation on biomass and chemical composition of the aquatic macrophyte Eichhornia azurea (Kunth) in an oxbow lake of the Rio Mogi-Guacu (São Paulo, Brazil)
Fecha
1996-01-01Registro en:
Archiv Fur Hydrobiologie. Stuttgart: E Schweizerbart'sche Verlags, v. 135, n. 3, p. 423-432, 1996.
0003-9136
WOS:A1996TT86100008
Autor
Universidade Federal do Rio de Janeiro (UFRJ)
Universidade Estadual Paulista (Unesp)
Resumen
The influence of water level variation (flood pulse) on the biomass and chemical composition of the aquatic macrophyte Eichhornia azurea, was investigated in a tropical oxbow lake of the Rio Mogi-Guacu, State of São Paulo, Brazil. The flood pulse causes an increase in total nitrogen content from 0.67 to 1.35 mg/L and total phosphorus content from 10.5 to 101.0 mu g/L of the water. This fertilization, associated with other factors, determines a typical seasonal variation in the biomass and chemical composition of the macrophyte.