Denitrification Rates in the Low-Oxygen Waters of the Stratified Baltic Proper
AUTOR(ES)
Rönner, Ulf
RESUMO
Denitrification activity was shown in the deep, low-oxygen waters of the Baltic proper by both in vitro and in situ methods. The vertical distribution of NO3− in the water column showed nitrate consumption and NO2− and N2O maxima in the deep waters when O2 was below 0.2 ml liter−1, which is suggestive evidence for denitrification. Direct in situ evidence for denitrification was obtained by finding an N2 saturation of up to 108% in the deep waters. When these waters were incubated with 15NO3−, 15N2 was produced. Quantification of the denitrification rate done by the addition of C2H2 to water samples from the active depths showed a rate of about 0.10 μmol liter−1 day−1.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=291751Documentos Relacionados
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