Hydrological regime and salinity alter the bioavailability of Cu and Zn in wetlands.

Clicks: 263
ID: 26873
2010
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Ranked #101 of 145 articles by views in Environmental pollution (Barking, Essex : 1987)

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Abstract
In the context of the European Water Framework Directive, controlled flooding of lowlands is considered as a potential water management strategy to minimise the risk of flooding of inhabited areas. However, due to historical pollution and overbank sedimentation, metal levels are elevated in most wetlands, which can cause adverse effects on the ecosystem's dynamics. Additionally, salinity affects the bioavailability of metals present or imported into these systems. The effect of different flooding regimes and salinity exposure scenarios (fresh- and brackish water conditions) on Cu and Zn accumulation in the oligochaete Tubifex tubifex (Müller, 1774) was examined. Metal mobility was closely linked to redox potential, which is directly related to the prevalent hydrological regime. Flooded, and thus more reduced, conditions minimized the availability of metals, while oxidation of the substrates during a drier period was associated with a rapid increase of metal availability and accumulation in the oligochaetes.
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speelmans2010hydrologicalenvironmental Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Speelmans, M;Lock, K;Vanthuyne, D R J;Hendrickx, F;Du Laing, G;Tack, F M G;Janssen, C R;
Journal Environmental pollution (Barking, Essex : 1987)
Year 2010
DOI
10.1016/j.envpol.2009.10.040
URL
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