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Abstract Biudes JFV, Camargo AFM:
"Changes in biomass, chemical composition and nutritive value of Spartina alterniflora due to organic pollution in the Itanhaem River Basin (SP, Brazil)",
Brazilian Journal of Biology 66 (3) : 781-789 (Aug 2006)

Keywords   biomass, chemical composition, nutritive value, Spartina alterniflora.
Abstract   We compared the values of the biomass, chemical composition and nutritive value of the emergent aquatic macrophyte S. alterniflora in a river affected by the discharge of domestic sewage (Guau River) and in an unpolluted river (Itanhaem River). S. alterniflora, water and sediment samples were obtained in the two rivers in November, 2001. The Guau River presented the highest levels of Total-N and Total-P in the water (415 and 674 µg.L-1, respectively) and in the sediment (0.25 e 0.20% of the Dry Mass, respectively), when compared to the water (TN = 105 µg.L-1; TP = 20 µg.L-1) and the sediment (NT = 0.12% DM; PT = 0.05% DM) of the Itanhaem River. Aerial (316 g DM.m-2) and subterraneous (425 g DM.m-2) biomass of S. alterniflora were significantly higher in the Guau River than in the Itanhaem River (146 and 115 g DM.m-2, respectively). In addition, the values of TN, protein, TP, lipids and soluble carbohydrates were significantly higher in S. alterniflora biomass from the Guau River. On the other hand, the values of the polyphenols and the cell wall fraction were significantly higher in the biomass of S. alterniflora from the Itanhaem River. We concluded that domestic sewage discharge in water bodies may increase the biomass and change the chemical composition of S. alterniflora. The high N and P availability in the water of the Guau River is probably the cause of the higher biomass, TN, TP, protein, lipids and soluble carbohydrates measured in S. alterniflora in this river.
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 2 records found.
Name Affiliation Home page e-mail Total pubs 
Biudes JFVIPrograma de Pos Graduacao em Aquicultura, Centro de Aquicultura da Universidade Estadual Paulista – CAUNESP, UNESP, Via de Acesso Prof. Paulo Donato Castellane, s/n, CEP 14884-900, Jaboticabal, SP, Brazil afmc@rc.unesp.br2
Camargo AFMIPrograma de Pos Graduacao em Aquicultura, Centro de Aquicultura da Universidade Estadual Paulista – CAUNESP, UNESP, Via de Acesso Prof. Paulo Donato Castellane, s/n, CEP 14884-900, Jaboticabal, SP, Brazil afmc@rc.unesp.br2

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