Is copper an inhibiting factor for primary production in the upwelling waters of Cabo Frio?

The goal of the present work was to test the hypothesis that inorganic species of copper may inhibit primary production in upwelling waters from the Cabo Frio region. Water samples were collected from four different depths up to 50 m at three stations of Cabo Frio and nutrient concentration, pH, dis...

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Bibliographic Details
Published inJournal of the Brazilian Chemical Society Vol. 14; no. 5; pp. 815 - 821
Main Authors Diniz, Antônia G., Hamacher, Claudia, Wagener, Angela de L. R., Gonzalez-Rodriguez, Eliane
Format Journal Article
LanguageEnglish
Published Sociedade Brasileira de Química 01.10.2003
Subjects
CHEMISTRY, MULTIDISCIPLINARY
copper speciation
primary production
upwelling waters
copper speciation
upwelling waters
primary production
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Summary:The goal of the present work was to test the hypothesis that inorganic species of copper may inhibit primary production in upwelling waters from the Cabo Frio region. Water samples were collected from four different depths up to 50 m at three stations of Cabo Frio and nutrient concentration, pH, dissolved oxygen, alkalinity, seston, chlorophyll a, primary production, NPP, copper speciation, Cu(II) and Cu(I) and complexing capacity were determined. The results indicate that the rate of photosynthesis in nutrient rich waters with higher copper content and lower complexing capacity is significantly reduced. Cu(I) made up 2-15% of the total copper, however, there was no evidence to suggest that the photochemical production of Cu(I) affects NPP.
ISSN:0103-5053
1678-4790
0103-5053
DOI:10.1590/S0103-50532003000500018