Mercury in salt marshes ecosystems: Halimione portulacoides as biomonitor
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چکیده
منابع مشابه
Mercury in salt marshes ecosystems: Halimione portulacoides as biomonitor.
Mercury concentrations were quantified in Halimione portulacoides (roots, stems and leaves) as well as in sediments from eight Portuguese estuarine systems, covering seventeen salt marshes with distinct degrees of mercury contamination. The concentration of mercury in the sediments ranged from 0.03 to 17.0 microg g(-1). The results show that the accumulation of mercury differed according to the...
متن کاملMercury mobility in a salt marsh colonised by Halimione portulacoides.
The present study intends to increase the knowledge on the mobility of mercury in a salt marsh colonised by Halimione portulacoides. Mercury distribution in the sediment layers and its incorporation into the plant biomass were assessed, as well as the potential export of mercury from the contaminated area to the adjacent environment. Mercury pools in the sediments ranged from 560 to 943 mg m(-2...
متن کاملMercury intracellular partitioning and chelation in a salt marsh plant, Halimione portulacoides (L.) Aellen: strategies underlying tolerance in environmental exposure.
In the presence of metal stress, plants can resort to a series of tolerance mechanisms. Therefore field studies should be undertaken in order to evaluate the real role of these mechanisms in stress coping. The aim of this paper was to clarify the biochemical processes behind mercury tolerance in Halimione portulacoides (L.) Aellen (Caryophyllales: Chenopodiaceae) collected in a mercury contamin...
متن کاملCopper, zinc and lead speciation in salt marsh sediments colonised by Halimione portulacoides and Spartina maritima.
Total concentrations and fractionation of Cu, Zn and Pb in seven operationally defined phases (exchangeable, carbonates, manganese oxides, organic complexes, amorphous iron oxides, crystalline iron oxides and residual) were determined in sediments colonised by the halophyte species Halimione portulacoides and Spartina maritima in a Tagus estuary salt marsh (Portugal). We aimed to determine whet...
متن کاملCarbon Sequestration in Tidal Salt Marshes and Mangrove Ecosystems
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ژورنال
عنوان ژورنال: Chemosphere
سال: 2008
ISSN: 0045-6535
DOI: 10.1016/j.chemosphere.2008.07.053