La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Dissolved oxygen and nutrient budgets in a phytotreatment pond colonised by Ulva spp.
Auteurs :	M. Bartoli, Auteur ; D. Nizzoli, Auteur ; L. Vezzulli, Auteur ; M. Naldi, Auteur ; G. Fanciulli, Auteur ; P. Viaroli, Auteur ; M. Fabiano, Auteur
Type de document :	Article
Dans :	Hydrobiologia (550 NOV 1 2005)
Article en page(s) :	199-209
Résumé :	Net daily budgets of dissolved oxygen (02), dissolved inorganic carbon (DIC), dissolved inorganic nitrogen (DIN = NH(4)(+)+NO(2)(-)+NO(3)(-)) and soluble reactive phosphorus (SRP) were determined in a pond colonised by Ulva spp. This pond received wastewater from a land-based fish farm and was used as a phytotreatment plant. Three consecutive 24-h cycles of measurements were performed with 8-14 samplings per day. Water samples were collected at the inlet and outlet of the pond and budgets were estimated from differences between inlet and outlet loadings. The first cycle was started when Ulva biomass was 8 kg m(-2), as wet weight. The second cycle was performed after the harvest of similar to 20% of the macroalgal biomass and the third after the harvest of another similar to 20% of the remaining biomass. Ulva removal was very fast (

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