Comparison of the role of the sea club-rush Scirpus maritimus and the sea rush Juncus maritimus in terms of concentration, speciation and bioaccumulation of metals in the estuarine sediment

The capability of Scirpus maritimus and of Juncus maritimus to accumulate metals and the role of each plant on the physico-chemical composition of sediments, from Douro river estuary (NW Portugal), were investigated through a year of plants' life. The contents of Al, Cd, Cr, Cu, Fe, Mn, Ni, Pb...

Full description

Saved in:
Bibliographic Details
Published in:Environmental pollution (1987) 2006-07, Vol.142 (1), p.151-159
Main Authors: Almeida, C. Marisa R., Mucha, Ana P., Vasconcelos, M. Teresa S.D.
Format: Article
Language:English
Subjects:
Applied sciences
bioaccumulation
Biomass
Biotransformation
Bolboschoenus maritimus
Brackish
Cadmium - metabolism
chemical speciation
Decontamination. Miscellaneous
Earth sciences
Earth, ocean, space
Ecosystem
Engineering and environment geology. Geothermics
Environmental Monitoring - methods
Estuarine sediment
estuarine sediments
Exact sciences and technology
Geologic Sediments
heavy metals
Juncus
Juncus maritimus
Lead - metabolism
Marine
Metals - analysis
Metals - metabolism
phytoremediation
Phytostabilization
Plant Roots - chemistry
Plant Roots - metabolism
Plants - metabolism
Pollution
Pollution, environment geology
Portugal
Rhizosphere
rivers
Salt marsh plant
salt marsh plants
Scirpus maritimus
Seasonality
Seasons
Seawater
sediment contamination
Soil and sediments pollution
Water Pollutants, Chemical - analysis
Water Pollutants, Chemical - metabolism
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The capability of Scirpus maritimus and of Juncus maritimus to accumulate metals and the role of each plant on the physico-chemical composition of sediments, from Douro river estuary (NW Portugal), were investigated through a year of plants' life. The contents of Al, Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn were determined (by atomic absorption spectrophotometry) in sediment, rhizosediments (those in contact with each plant roots and rhizomes) and different tissues of S. maritimus and of J. maritimus. Both plants influenced the sediment composition (concentrating metals around its roots) and were able to bioaccumulate Cd, in spite of some seasonal variations in the metal levels in the system (both in rhizosediments and plants' roots). Therefore, both plants showed to have potential for Cd phytostabilization. S. maritimus could also concentrate Pb in its roots, probably by sorption on the root surface in (hydr)oxide forms, therefore, denoting capability for Pb phytostabilization. Both Juncus maritimus and Scirpus maritimus have potential for the phytostabilization of Cd, and the last one also for Pb phytostabilization.
ISSN:0269-7491
1873-6424
DOI:10.1016/j.envpol.2005.09.002