Trends in pollutants in blue mussel Mytilus edulis and flounder Platichthys flesus from two Dutch estuaries, 1985–1990

Stronkhorst, J.

doi:10.1016/0025-326x(92)90563-l

Cited by 47 publications

(14 citation statements)

References 10 publications

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“…Data on seawater metal levels in the delta area are not available, but mussels from Veerhaven and other sites in the Westerschelde have been shown to have high Tab1.e 1. Spa1 tissue concentrations of mercury, lead, chromium, arsenic, nickel, cadmium, copper, zinc (Luten et al 1986, Stronkhorst 1992, polychlorinated biphenyls (PCB) and pesticides (Hummel et al 1990, Stronkhorst 1992. A neighbouring estuary in the Rhine-Meuse delta system, the Oosterschelde, was almost completely closed off from riverine input by completion of the Volkerakdam in 1969 and is now, as a sea-arm, considered to be unpolluted by comparison with the Westerschelde.…”

Section: Methodsmentioning

confidence: 99%

Variation among populations in the resistance of Mytilus edulis embryos to copper:adaptation to pollution?

Hoare¹,

Beaumont²,

Davenport³

1995

Mar. Ecol. Prog. Ser.

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The effects of copper on embryo development were found to differ between populations of the mussel Mytilus edulis L. (Mollusca: Bivalvia). Concentrations of copper which caused significantly increased rates of abnormality, and thus decreased yields of normal larvae, in populations from an unpolluted site (Menai Straits, Wales, UK) and to a lesser extent in an intermediately polluted site (Oosterschelde, The Netherlands) did not affect development of embryos from a polluted-site (Westerschelde, The Netherlands) population Crosses indicated that tolerance was mostly maternally determined, but there is also evidence of a paternal, i.e, genetic, effect. An appreciable quantity of background, non-treatment, embryo abnormality appeared to be sperm-mediated.

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Section: Methodsmentioning

confidence: 99%

Variation among populations in the resistance of Mytilus edulis embryos to copper:adaptation to pollution?

Hoare¹,

Beaumont²,

Davenport³

1995

Mar. Ecol. Prog. Ser.

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“…(Gosling 1992). The 'clean' site source population was from Gallows Point (53" 15' N, 4" 06' W), Menai Strait, Wales, UK, a (Luten et al 1986, Stronkhorst 1992, polychlorinated biphenyls (PCB) and pesticides (Hummel et al 1990, Stronkhorst 1992. All experiments were carried out in accordance with the provisions of the Sea Fisheries (Shellfish) Act 1967 as varied by the Molluscan Shellfish (Control of Deposit) (Variation) Order 1983, S.I.…”

Section: Methodsmentioning

confidence: 99%

Effects of exposure and previous exposure to copper on growth of veliger larvae and survivorship of Mytilus edulis juveniles

Hoare¹,

Davenport²,

Beaumont³

1995

Mar. Ecol. Prog. Ser.

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Exposure of Mytilus edulis L. (Molluscs: Bivalvia) to 8 ppb (ppb = 1-lg I-') added copper during the vellger larval or post-larval (spat) stages has no significant effects on survivorship or shell growth However, previous exposure to 8 ppb added copper d u r~n g the embryo stage significantly Increases veliger growth rate and decreases spat survivorship in a population from the Menal S t r a~t , Wales, UK, in which this level of copper causes a slgnlflcant increase in embryo abnormality No such effects of pre-exposure are seen in a population from the Westerschelde, The Netherlands, where 8 ppb added copper does not constitute a stress on the embryo. These 'pre-incubation' (embryo exposure) effects far outweigh any direct influence of 8 ppb copper exposure d u n n g the later stages a n d have a substantial effect on estimates of the toxlcity of copper over the llfe cycle of M e d u l~s

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“…As part of the JMP, Luten et al (1986) and Stronkhorst (1992) reported concentrations of Hg, As, Cu, Cr, Zn, Pb and Ni in mussels at selected sites in the Western Scheldt estuary (WS) and the nearby Eastern Scheldt tidal basin (ES) for the periods 1979-1983 and 1985-1990, respectively. More recent data is compiled annually by The Netherlands Institute for Fisheries Research -RIVO (Yerseke, The Netherlands). However, under the JMP only a limited number of sites are monitored regularly mostly in the lower estuary.…”

Section: Introductionmentioning

confidence: 99%

“…For a long time, they have been used to monitor metal pollution in coastal and marine environments world-wide (Goldberg, 1983;Luten et al, 1986;Livingstone & Pipe, 1992;Stronkhorst, 1992;De Kock & Kramer, 1994;O'Connor et al, 1994;Widdows et al, 1995;Beliaeff et al, 1997;O'Connor, 1998). In the Dutch coastal and estuarine waters, monitoring of selected heavy metals in marine mussel Mytilus edulis and flounder Platichthys flesus started around 1979 as the Dutch contribution to the Joint Monitoring Programmes (JMP) initiated after the Oslo Convention on dumping at sea (1972) and the Paris Convention on pollution from land-based sources (1974).…”

Section: Introductionmentioning

confidence: 99%

Temporal and spatial trends in heavy metal concentrations in the marine mussel Mytilus edulis from the Western Scheldt estuary (The Netherlands)

et al. 2005

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Since the first North Sea Conference (1984, Bremen), all countries bordering the North Sea made commitments to reduce discharge of hazardous substances into the North Sea. From Belgium and The Netherlands, large reductions (upto 90%) in heavy metal emissions from land-based sources have been reported between 1985 and 2000. Recently, some studies in the Western Scheldt estuary (WS) have shown that total metal concentration in the water, sediments and suspended particles have decreased compared to levels in the 70s. However, data on aquatic organisms is still very limited and it is therefore difficult to confirm whether the reductions in pollution input and generally improving water quality in the WS have a corresponding impact on the levels of heavy metals in aquatic organisms. The current study measured metal concentrations in the soft tissues of mussels, Mytilus edulis (known to be good indicators of environmental metal pollution) during the period 1996-2002. Spatial (salinity and pollution gradients), temporal and seasonal variations were also studied. Results showed a down-stream decreasing trend for the metals studied (Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn) during all sampling campaigns. There was also a significant seasonal effect on tissue metal concentrations, with a peak observed around spring in both WS and the nearby less polluted Eastern Scheldt (ES). On temporal trends, a clear drop of metals in mussels was observed in the early 80s coinciding with the start of the efforts to reduce chemical pollution input into the North Sea. Since those early reductions, metal concentrations in mussels generally remained unchanged upto mid 90s. However, in recent times metal concentration in mussels have increased significantly, for example Cd in 2002 was almost 10 times the values in 1983 and similar to levels seen during the peak in the 70s. Other metals also increased in the 90s also reaching levels seen in the 70s. As there is no indication of recent increase in metal input into the estuary, we suggest that increased metal concentrations observed in mussels in recent years especially in the upper estuary are most likely a result of changes in physical and chemical speciation and metal bioavailability. Such changes may be caused by changes in some water quality parameters in the estuary (i.e. increased dissolved oxygen, concentration of organic matter), resulting in conditions that favour releases of sediment-bound metals into the water column. The relationship between metal content and season showed very similar annual profiles in the polluted WS and less polluted ES. Thus, seasonal variations in metal concentrations appear to be largely controlled by biological processes, while total body burdens are dependent on environmental levels and bioavailability.

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Trends in pollutants in blue mussel Mytilus edulis and flounder Platichthys flesus from two Dutch estuaries, 1985–1990

Cited by 47 publications

References 10 publications

Variation among populations in the resistance of Mytilus edulis embryos to copper:adaptation to pollution?

Variation among populations in the resistance of Mytilus edulis embryos to copper:adaptation to pollution?

Effects of exposure and previous exposure to copper on growth of veliger larvae and survivorship of Mytilus edulis juveniles

Temporal and spatial trends in heavy metal concentrations in the marine mussel Mytilus edulis from the Western Scheldt estuary (The Netherlands)

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