La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Optical Changes in a Eutrophic Estuary During Reduced Nutrient Loadings
Auteurs :	Troels Moller Pedersen, Auteur ; Kaj Sand-Jensen, Auteur ; Stiig Markager, Auteur ; Soren Laurentius Nielsen, Auteur
Type de document :	Article
Dans :	Estuaries and Coasts (37(4) JUL 2014)
Article en page(s) :	880-892
Résumé :	Loss of water clarity is one of the consequences of coastal eutrophication. Efforts have therefore been made to reduce external nutrient loadings of coastal waters. This paper documents improvements to water clarity between 1985 and 2008-2009 at four stations in the microtidal estuary Roskilde Fjord and find significant relationships to freshwater nutrient loadings. The paper then investigates to which extent changes in phytoplankton biomass (chlorophyll a (Chl a)), non-algal particulate organic matter (POM*), and residual attenuation in the water (K (b)), respectively, can account for this optical improvement. Vertical light attenuation (K (d)) declined, on average, by

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