NDLI: Mercury uptake and allocation in <i>Juncus maritimus</i>: implications for phytoremediation and restoration of a mercury contaminated salt marsh

Content Provider	Royal Society of Chemistry (RSC)
Author	Duarte, Armando Figueira, Etelvina Freitas, Rosa Pereira, Eduarda
Copyright Year	2012
Abstract	Juncus maritimus is the most abundant macrophyte in Laranjo bay, a Portuguese salt marsh heavily polluted by mercury (Hg). With the aim to elucidate the role of this species in the salt marsh Hg cycling and restoration, plants were harvested between March 2006 and January 2008 from four locations differing in Hg contamination. Metal uptake and distribution between plant organs were evaluated, biomass and Hg pools were also determined. Results showed that J. maritimus may influence the sediment pH and Eh, thus increasing the Hg available for uptake. Most (95–98%) of the absorbed Hg was retained belowground, phytostabilizing the metal and reducing the amount of Hg in the sediments. These results suggest that in salt marshes dominated by J. maritimus the approach could be phytostabilization, where these plants can be used to immobilize metals and store them belowground, reducing the pool of bioavailable Hg within contaminated marshes and acting as a sink rather than a source of contamination to the surrounding areas.
Starting Page	2181
Ending Page	2188
Page Count	8
File Format	HTM / HTML PDF
ISSN	14640325
Volume Number	14
Issue Number	8
Journal	Journal of Environmental Monitoring
DOI	10.1039/c2em30076a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Laranjo Juncus maritimus Macrophyte Portugal Salt marsh Methylmercury Biomass Sediment PH
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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