Original Articles
Vol. 68 No. 2 (2009)
https://doi.org/10.4081/jlimnol.2009.368

Eutrophication and its effect on dissolved Si concentrations in the Garonne River (France)

Publisher's note
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.
Received: 6 December 2011
Accepted: 6 December 2011
Published: 1 August 2009
2486
Views
707
Downloads
phytoplankton, diatoms, benthic biofilms, silica, eutrophication, Garonne River

Authors

Koenraad MUYLAERT
koenraad.muylaert@kuleuven-kortrijk.be
José Miguel SANCHEZ-PÉREZ
Samuel TEISSIER
Sabine SAUVAGE
Alain DAUTA
Philippe VERVIER
Dissolved nutrient and chlorophyll-a concentrations were monitored on 17 occasions and at 16 sites in the Garonne River (France). Concentrations of dissolved inorganic nitrogen (DIN) and soluble reactive phosphorus (SRP) increased about threefold downstream of the urban area of Toulouse. Chlorophyll-a concentrations increased concomitantly with DIN and SRP downstream of Toulouse. Chlorophyll-a concentrations were maximal in late winter to early spring and in summer, in-between the snow-melt driven spring flood and rainfall-driven autumn flood. Dissolved silica (DSi) concentrations were negatively correlated with chlorophyll-a concentrations, suggesting uptake by algae. DSi depletion was more severe downstream of Toulouse, suggesting that eutrophication may affect DSi consumption in the Garonne River.

Downloads

Download data is not yet available.

Citations

Crossref
Scopus
Google Scholar
Europe PMC

How to Cite



1.
MUYLAERT K, SANCHEZ-PÉREZ JM, TEISSIER S, SAUVAGE S, DAUTA A, VERVIER P. Eutrophication and its effect on dissolved Si concentrations in the Garonne River (France). J Limnol [Internet]. 2009 Aug. 1 [cited 2026 Mar. 9];68(2):368-74. Available from: https://www.jlimnol.it/jlimnol/article/view/jlimnol.2009.368