Journal
ENVIRONMENTAL POLLUTION
Volume 197, Issue -, Pages 295-308Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2014.11.022
Keywords
Sediment; Trace metal; Phosphorus; Resuspension; Boat traffic; Water framework directive; River canal
Categories
Funding
- Region Nord-Pas de Calais, Voies Navigables de France
- l'Agence de l'Eau Artois-Picardie
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In Northern France, channelized rivers facilitate greatly the waterway transport that should still increase in the coming years to replace as much as possible the road traffic, considered as a heavier source of pollution. These rivers are now subjected to the good potential status objectives required by the Water Framework Directive. The impact of the recurrent resuspension by the current boat traffic of polluted sediments (due to strong historical pollution) on the water quality is the main concern of this work. Our study reveals that the navigation seems to play a limited role on the enrichment of the water columns by dissolved metals and phosphorus, as well as on the oxygenation of surface waters. Conversely, the cycling of the phytoplankton over the year appears to partly control the physico-chemical and chemical evolutions of the overlying waters. (C) 2014 Elsevier Ltd. All rights reserved.
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