Assessing the bioavailability and degradation rates of marine dissolved organic matter by fluorescence spectroscopy

The time course of colored dissolved organic matter (CDOM) absorption and fluorescence were monitored during 50 to 70 days of laboratory incubations with water collected in the coastal upwelling system of the Ria de Vigo (NW Iberian Peninsula) under contrasting hydrographic conditions. CDOM fluoresc...

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Bibliographic Details
Published in:Marine Chemistry
Main Authors: Lonborg, Christian, Alvarez-Salgado, Xose, Davidson, Keith, Teira, E, Miller, Axel
Format: Article in Journal/Newspaper
Language:English
Published: 2010
Subjects:
MARINE
DYNAMICS
CARBON
NITROGEN
Chemistry
Multidisciplinary
NW SPAIN
Oceanography
AMINO-ACIDS
DECOMPOSITION
ENVIRONMENTS
DOM
NORTH-ATLANTIC
North Atlantic
Online Access:https://pure.uhi.ac.uk/en/publications/b8c546af-bbca-4553-b392-7caefc643ba1
https://doi.org/10.1016/j.marchem.2010.02.001
Description
Summary:The time course of colored dissolved organic matter (CDOM) absorption and fluorescence were monitored during 50 to 70 days of laboratory incubations with water collected in the coastal upwelling system of the Ria de Vigo (NW Iberian Peninsula) under contrasting hydrographic conditions. CDOM fluorescence at peak-T (Ex/Em, 280/350 nm), characteristic of protein-like materials, decayed at a 1st order degradation rate constant (k(T)) of 0.28 +/- 0.13 day(-1) (average +/- SD). k(T) covaried (R-2 = 0.86, p

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