Iron, zinc, copper, lead and cadmium contents in Ruppia maritima from a Mediterranean coastal lagoon: monthly variation and distribution in different plant fractions
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Paraskevi Malea
Abstract
Metal concentrations and quantities were determined monthly in different fractions of the submerged angiosperm Ruppia maritima in Monolimni Lagoon, Aegean Sea. Concentrations were the highest in the roots, suggesting that the sediment-to-root pathway is a principal uptake route of metals. Most metals were equally distributed between rhizomes plus stems and leaves; Fe accumulated greatly in the rhizomes plus stems, whereas Cu occurred mostly in the leaves. Positive correlations were found between metal concentrations in different plant parts, suggesting metal translocation. Most metal concentrations in the different parts declined during the growing season. Iron and Cd accumulation was found to be associated with temperature, which strongly influences the plant growth; additionally, Fe and Cd concentrations in plant tissues were negatively correlated with leaf, rhizome plus stem biomass. Copper concentrations in the roots showed a converse monthly pattern. No metal concentration in plant fractions was positively correlated with concentrations in the water or sediments. Metal quantities (μg m-2) stored in the plant generally increased 2- to 4-fold during the growing season. Evidence that return to sediments is a major fate of these quantities is provided by the seasonal pattern in sediment metal concentrations.
©2008 by Walter de Gruyter Berlin New York
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Articles in the same Issue
- Review
- Alien marine macrophytes in Greece: a review
- Research articles
- Effects of erosion and macroalgae on intertidal eelgrass (Zostera marina) in a northeastern Pacific estuary (USA)
- A reassessment of Halophila species (Hydrocharitaceae) diversity with special reference to Japanese representatives
- Survey and phytochemical analysis of seagrasses in the Gulf of Mannar, southeast coast of India
- Temperature response in a shallow-water Mediterranean population of Caulerpa racemosa var. cylindracea (Caulerpales, Chlorophyta), and a possible strategy of season anticipation
- Dynamics and patterns of algal colonization on mechanically damaged and dead colonies of the coral Porites lutea
- Toxicity, morphology and distribution of Pseudo-nitzschia calliantha, P. multistriata and P. multiseries (Bacillariophyta) from the northwestern Sea of Japan
- Ceramium periconicum sp. nov. (Ceramiaceae, Rhodophyta): a new subtidal species from Baja California Sur, Mexico
- Seaweed polysaccharides with anticancer potential
- Iron, zinc, copper, lead and cadmium contents in Ruppia maritima from a Mediterranean coastal lagoon: monthly variation and distribution in different plant fractions
- Taxonomy and molecular phylogeny of Arthrobotrys mangrovispora, a new marine nematode-trapping fungal species
- Meetings
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