Ecotoxicity assessment of natural attenuation effects at a historical dumping site in the western Baltic Sea

Leipe, Thomas; Kersten, Michael; Heise, Susanne; Pohl, Christa; Witt, Gesine; Liehr, Gladys A.; Zettler, Michael L.; Tauber, Franz

doi:10.1016/j.marpolbul.2004.11.049

Cited by 42 publications

(27 citation statements)

References 31 publications

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“…All of these effects were of a transient nature and had mostly disappeared after 1 year of mesocosm incubation. Elevated pore-water metal concentrations as a result of redeposition of polluted sediment were also described in other studies (Leipe et al 2005). However, the degree of impact depends on the volume of deposited material and its contamination level, as Chen and coauthors (2003) only observed an increase in Cu levels after deposition of a 5-cm layer of polluted sediment, whereas no effects could be detected underneath a 1-cm layer.…”

Section: Effects Of Sediment Homogenization and Redepositionmentioning

confidence: 53%

Effects of Deposition of Heavy-Metal-Polluted Harbor Mud on Microbial Diversity and Metal Resistance in Sandy Marine Sediments

Toes

Finke

Kuenen

et al. 2008

Arch Environ Contam Toxicol

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Deposition of dredged harbor sediments in relatively undisturbed ecosystems is often considered a viable option for confinement of pollutants and possible natural attenuation. This study investigated the effects of deposition of heavy-metal-polluted sludge on the microbial diversity of sandy sediments during 12 months of mesocosm incubation. Geochemical analyses showed an initial increase in pore-water metal concentrations, which subsided after 3 months of incubation. No influence of the deposited sediment was observed in denaturing gradient gel electrophoresis (DGGE) profiles of bacterial 16S rRNA genes, whereas a minor, transient impact on the archaeal community was revealed. Phylogenetic analyses of bacterial 16S rRNA clone libraries showed an abundance of members of the Flavobacteriaceae, the a-and c-Proteobacteria, in both the muddy and the sandy sediments. Despite the finding that some groups of clones were shared between the metal-impacted sandy sediment and the harbor control, comparative analyses showed that the two sediments were significantly different in community composition. Consequences of redeposition of metalpolluted sediment were primarily underlined with cultivation-dependent techniques. Toxicity tests showed that the percentage of Cd-and Cu-tolerant aerobic heterotrophs was highest among isolates from the sandy sediment with metal-polluted mud on top.

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Section: Effects Of Sediment Homogenization and Redepositionmentioning

confidence: 53%

Effects of Deposition of Heavy-Metal-Polluted Harbor Mud on Microbial Diversity and Metal Resistance in Sandy Marine Sediments

Toes

Finke

Kuenen

et al. 2008

Arch Environ Contam Toxicol

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“…1). Whereas little is known on the history of this pollution, dumping activities are known from Luebeck City in the late 1950s until the mid1960s (Leipe et al 2005). A considerable part of the dumped material was found to be spread over the whole inner part of Mecklenburg Bight due to resuspension and transport of surface sediment with a depth of 20 to 25 cm (Leipe et al 1998).…”

mentioning

confidence: 99%

“…A considerable part of the dumped material was found to be spread over the whole inner part of Mecklenburg Bight due to resuspension and transport of surface sediment with a depth of 20 to 25 cm (Leipe et al 1998). The dumping site analyzed is one of 132 pollution hot spots around the Baltic Sea (Leipe et al 1998(Leipe et al , 2005, identified by the Helsinki Commission (Helcom 1989;Andrulewicz et al 1996).…”

mentioning

confidence: 99%

Ecotoxicological characterization of sediment cores from the western Baltic Sea (Mecklenburg Bight) using GC–MS and in vitro biotests

Wölz

Borck²,

Witt³

et al. 2009

J Soils Sediments

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Background, aim, and scope The Mecklenburg Bight (Western Baltic Sea) near Luebeck, Germany was historically used to dump industrial waste at sea and, thus, sediments in some regions are highly polluted at present. While earlier studies identified hot spots of chemical pollution, little is known about biological activities and impacts on exposed marine organisms. This study aimed to assess the pollution in the Mecklenburg Bight to determine the degree of contamination with sediment-bound polycyclic aromatic hydrocarbons (PAHs) as well as biological activities. Materials and methods Sediment cores with a depth of 30 cm were sampled at a dumping site and at a reference site, sliced in distinct layers, freeze-dried, and processed using the accelerated solvent extraction method. Sediment was characterized measuring total organic carbon (TOC) and soot contents. Concentrations of the 16 EPA-PAHs were determined with chemical analysis (gas chromatography-mass spectroscopy) in each sediment slice and referred to the determined TOC content. Further on, in vitro biotests were applied to determine toxic effects of contaminants in the sediment. The acute neutral red retention assay indicated no specific cytotoxic effects. Arylhydrocarbon receptor (AhR)-mediated activities were measured using the mechanism-specific 7-ethoxyresorufin-O-deethylase induction assay. Both biotests were performed with rainbow trout (Oncorhynchus mykiss) liver cells (RTL-W1). Analyzed compound concentrations and biological activities were given in toxicological equivalent concentrations (chem-and bio-TEQs) to determine shares of analyzed EPA-PAHs to the overall activity. Results TOC and soot contents indicated a significant alteration through the sediment core at the dumping site. EPA-PAH concentrations were referred to TOC and indicated elevated concentrations at the dumping site. Maximum PAH concentrations (14 to 16 cm depth; 5.44 μg/g TOC) were 300-fold increased at the dumping site, compared to the reference site (4 to 6 cm depth; 0.017 μg/g TOC). Cytotoxicity as determined in the neutral red retention assay was elevated in some layers at the dumping site (maximum in 4 to 6 cm depth; NR 50 =14 mg/ ml), but not correlated with TOC or soot contents. Ah receptor agonist activities were clearly elevated in highly PAH-loaded layers at both sites. At the dumping site, maximum activities were determined reflected by a bio-TEQ of 223,000 pg/g (19 to 22 cm), in contrast to a bio-TEQ of 41,000 pg/g (6 to 8 cm) at the reference site. Further on, shares of EPA-PAHs to the overall activity were determined and contributed >40% at the dumping site and between 4% and 17% at the reference site. Chem-TEQs were found to exceed bio-TEQs in a depth of 11 to 22 cm, indicating the presence of Ah receptor antagonistic or inhibitive compounds. Discussion Sediments from the dumping site were determined to be highly contaminated and caused toxic effects in

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“…The highest PAH concentration, amounting 80 µg/g dw, was found at a depth of 16-18 cm into the sediment. Closer to the surface the concentration value amounted to 2 µg/g dw (Leipe et al 2005). Of the analysed PAHs, the compounds with the highest values, reaching up to 30 µg/g dw, were of pyrogenic origin: phenanthrene, fluoranthene and pyrene.…”

Section: Contamination Of Harbour Bed Sediments With Pahsmentioning

confidence: 94%

The contamination of bottom sediments in the Southern Baltic with polycyclic aromatic hydrocarbons (PAHs)

Lewandowska¹

2016

Ecocycles

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-The study involved a comparative analysis of PAH (polycyclic aromatic hydrocarbons) concentrations in the bottom sediments of the southern part of the Baltic Sea. It was determined that the contamination of sediments with PAHs is considerable (>500 ng/g), with the predominance of pyrogenic PAHs. Polycyclic aromatic hydrocarbons become deposited mainly in anaerobic or extremely anaerobic areas, with a large proportion of the <0.063 mm fraction and a sizeable content of organic matter. In the studied regions, the contamination of sediments was the consequence of anthropogenic activity.

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Ecotoxicity assessment of natural attenuation effects at a historical dumping site in the western Baltic Sea

Cited by 42 publications

References 31 publications

Effects of Deposition of Heavy-Metal-Polluted Harbor Mud on Microbial Diversity and Metal Resistance in Sandy Marine Sediments

Effects of Deposition of Heavy-Metal-Polluted Harbor Mud on Microbial Diversity and Metal Resistance in Sandy Marine Sediments

Ecotoxicological characterization of sediment cores from the western Baltic Sea (Mecklenburg Bight) using GC–MS and in vitro biotests

The contamination of bottom sediments in the Southern Baltic with polycyclic aromatic hydrocarbons (PAHs)

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