Nutrient inputs and hydrology together determine biogeochemical status of the Loire River (France): Current situation and possible future scenarios

The Science of the Total Environment
Josette GarnierFlorentina Moatar

Abstract

The Grafs-Seneque/Riverstrahler model was implemented for the first time on the Loire River for the 2002-2014 period, to explore eutrophication after improvement of wastewater treatments. The model reproduced the interannual levels and seasonal trends of the major water quality variables. Although eutrophication has been impressively reduced in the drainage network, a eutrophication risk still exists at the coast, as shown by the N-ICEP indicator, pointing out an excess of nitrogen over silica and phosphorus. From maximum biomass exceeding 120 μgChla l-1 in the 1980's, we observed decreasing maximum values from 80 to 30 μgChla l-1 during the period studied. Several scenarios were explored. Regarding nutrient point sources, a low wastewater treatment scenario, similar to the situation in the 1980's, was elaborated, representing much greater pollution than the reference period (2002-2014). For diffuse sources, two agricultural scenarios were elaborated for reducing nitrogen, one with a strict application of the agricultural directives and another investigating the impact of radical structural changes in agriculture and the population's diet. Although reduced, a risk of eutrophication would remain, even with the most drastic scena...Continue Reading

References

Jan 26, 2005·Chemosphere·Julio A CamargoAnnabella Salamanca
Jan 16, 2007·The Science of the Total Environment·Denis RuellandJosette Garnier
Jan 30, 2007·The Science of the Total Environment·A DucharneP Viennot
Jan 15, 2010·The Science of the Total Environment·Vincent ThieuGilles Billen
Nov 10, 2012·The Science of the Total Environment·M FlouryY Souchon
Nov 28, 2012·The Science of the Total Environment·Rémi DupasPatrick Durand
Sep 1, 2014·Journal of Environmental Management·Keith DavidsonGrigorios Moschonas
Feb 19, 2015·Environmental Science & Technology·Christopher WellenGeorge B Arhonditsis
Jul 8, 2016·Environmental Health Perspectives·Andria M CiminoMelissa J Perry
Jun 20, 2017·The Science of the Total Environment·Anna MalagóMarco Pastori
Dec 1, 2008·Harmful Algae·J HeislerM Suddleson
Dec 24, 2017·The Science of the Total Environment·Benjamin W AbbottOlivier Ragueneau
Feb 17, 2018·Environmental Science and Pollution Research International·Josette GarnierAlexandra Coynel
May 2, 2018·The Science of the Total Environment·X DesmitG Lacroix

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