Memorization of heavy metals by scales of the seagrass Posidonia oceanica, collected in the NW Mediterranean

Roméo, Michèle; Gnassia‐Barelli, M.; Juhel, T.; Meinesz, A.

doi:10.3354/meps120211

Cited by 53 publications

(44 citation statements)

References 16 publications

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“…Although an increasing trend in Cd has been reported as a worldwide phenomenon, because 99% of Cd in the atmosphere is due to anthropogenic emissions [31], no univocal trend was found for all the sites. Cadmium concentrations in scales were in the same range as in dated scale samples of the same period from northern Corsica and the Cote d'Azur [12]. Cadmium concentrations in scales were in the same range as in dated scale samples of the same period from northern Corsica and the Cote d'Azur [12].…”

Section: Cadmiumsupporting

confidence: 54%

See 1 more Smart Citation

Posidonia oceanica as a biomonitor of trace elements in the gulf of naples: Temporal trends by lepidochronology

Ancora¹,

Bianchi²,

Butini³

et al. 2004

Enviro Toxic and Chemistry

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Levels of Hg, Cd, Pb, Cu, Zn, Fe, and Mn were assessed by using Posidonia oceanica as a bioindicator in the Gulf of Naples (southern Italy). Lepidochronology, which enables retroactive dating of scales and rhizomes of this seagrass, was combined with atomic spectrometry to assess temporal trends of trace elements in dated scales and rhizomes over a 10-year period. Lepidochronology occasionally has been used to monitor Hg in dated scales, but never has been used to determine concentrations of other trace elements in dated rhizomes. Data were compared between various structural parts of seagrass and between sampling sites. Concentrations of some elements found in dated scales or rhizomes showed a similar trend in most of the sites; increasing for Hg and Cu and decreasing for Pb, Fe, and Zn. Contaminant levels indicated by seagrass meadows varied from metal to metal. Concentrations of Hg, Cd, and Pb fell within the ranges measured in other areas considered to have low levels of heavy metal pollution, whereas Cu, Mn, and Zn had higher concentrations only in some years. However, on the basis of other studies, none of the sampling sites are considered to have high contamination levels.

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Section: Cadmiumsupporting

confidence: 54%

“…Heavy metals are significant environmental contaminants of seagrass systems [4,[9][10][11][12]. Previous field studies of seagrasses have shown that several species accumulate an array of trace metals [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Posidonia oceanica as a biomonitor of trace elements in the gulf of naples: Temporal trends by lepidochronology

Ancora¹,

Bianchi²,

Butini³

et al. 2004

Enviro Toxic and Chemistry

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“…This is astonishing in the case of scales which are dead tissues constituted by the dead sheathes, remaining after the leaf decay. The 15 N measured in scales was probably passively absorbed during the labelling by the same mechanism involved as for Fe accumulation (Roméo et al, 1995). The 15 N abundance in scales does not show a clear temporal variation.…”

Section: Discussionmentioning

confidence: 78%

Nitrogen dynamics in Posidonia oceanica cuttings: implications for transplantation experiments

Lepoint

Vangeluwe

Eisinger

et al. 2004

Marine Pollution Bulletin

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A 15 N tracer study was performed during an experimental transplantation trial of natural Posidonia oceanica cuttings. The experiment was done in situ at 17 m depth in the Revellata Bay (Calvi, NW Corsica, France). Despite high survival rates of transplants (>90%) after one year, the weight and the N content of transplants are significantly lower than those of reference plants. In absence of roots, the transplants are not able to meet their N requirement because, leaf uptake is insufficient to replenish the N lost during the natural leaf decay. This could constitute a major cause of long-term failure for transplantation experiments or natural re-colonisation processes. The increase of the 15 N content in the roots shows that the plant re-allocates the nitrogen of one organ (i.e. leaves, rhizomes) to ensure the growth of another (i.e. roots).

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“…3 km) to the main sewer of Marseille (Delmas 1990). Although poorly documented on a quantitative basis, differences in the global metal contamination of the three meadows are supported by time-series investigations through analysis of the scales of P. oceanica (Pergent-Martini 1992;Roméo et al 1995).…”

Section: Samplings and Sample Preparationmentioning

confidence: 99%

Heavy Metals in the Sea CucumberHolothuria tubulosa(Echinodermata) from the MediterraneanPosidonia oceanicaEcosystem: Body Compartment, Seasonal, Geographical and Bathymetric Variations

Warnau

Dutrieux

Ledent³

et al. 2006

Environmental Bioindicators

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The concentrations of Cd, Cu, Fe, Pb and Zn were measured in holothuroids Holothuria tubulosa collected during different seasons and at several depths in three N W Mediterranean Posidonia oceanica meadows (Calvi, Corsica; Ischia, Italy; Marseille, France). Metals were found to be selectively distributed among the holothuroid body compartments (i.e. body wall, gut, and haemal system). Among the sources of variation taken into account, the major part of the variability observed in metal concentrations was associated to the body compartment factor, then to the seasonal one and, finally, to the geographical and bathymetric factors. Our results suggest that, if one uses H. tubulosa as a bioindicator species for surveying and monitoring metal contamination in the Mediterranean P. oceanica meadows, attention should be paid to compare only concentrations measured in the same body compartments of individuals collected during the same period of the year. Body compartments that should be preferably considered for metal analyses are the haemal system and, secondarily, the gut (i.e. the compartments concentrating metals most efficiently). Due to the peculiar ecological characteristics of H. tubulosa (i.e. a deposit feeder living in close relationships with the sediments), this species could be effectively used to complement the small set of bioindicators available so far for surveying metal contamination in the P. oceanica ecosystem (viz. the phanerogam P. oceanica itself and the grazing echinoid Paracentrotus lividus).

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Memorization of heavy metals by scales of the seagrass Posidonia oceanica, collected in the NW Mediterranean

Cited by 53 publications

References 16 publications

Posidonia oceanica as a biomonitor of trace elements in the gulf of naples: Temporal trends by lepidochronology

Posidonia oceanica as a biomonitor of trace elements in the gulf of naples: Temporal trends by lepidochronology

Nitrogen dynamics in Posidonia oceanica cuttings: implications for transplantation experiments

Heavy Metals in the Sea CucumberHolothuria tubulosa(Echinodermata) from the MediterraneanPosidonia oceanicaEcosystem: Body Compartment, Seasonal, Geographical and Bathymetric Variations

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