Original paper
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-Guaçu (São Paulo, Brazil)
Camargo, A. F. M.; Esteves, F. A.
Archiv für Hydrobiologie Volume 135 Number 3 (1996), p. 423 - 432
25 references
published: Jan 22, 1996
DOI: 10.1127/archiv-hydrobiol/135/1996/423
ArtNo. ESP141013503007, Price: 29.00 €
Abstract
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-Guaçu, 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 µg/l of the water. This fertilization, associated with other factors, determines a typical seasonal variation in the biomass and chemical composition of the macrophyte.
Keywords
water level • macrophyte • nitrogen • fertilization • Rio Mogi-Guaçu • State of São Paulo • Brazil