Temporal trends in dioxins (polychlorinated dibenzo-p-dioxin and dibenzofurans) and dioxin-like polychlorinated biphenyls in Baltic herring (Clupea harengus) |
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Authors: | Aroha Miller Jenny E. Hedman Elisabeth Nyberg Peter Haglund Ian T. Cousins Karin Wiberg Anders Bignert |
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Affiliation: | 1. Department of Environmental Research and Monitoring, Swedish Museum of Natural History, P.O. Box 50 007, SE-104 05 Stockholm, Sweden;2. Policy Instruments for Natural Resources, Swedish Environmental Protection Agency, SE-10648 Stockholm, Sweden;3. Department of Chemistry, Umeå University, SE-90187 Umeå, Sweden;4. Department of Applied Environmental Sciences (ITM), Stockholm University, SE-10691 Stockholm, Sweden;5. Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, SE-75007 Uppsala, Sweden |
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Abstract: | Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and dioxin-like polychlorinated biphenyl (dl-PCBs) concentrations in Baltic herring (Clupea harengus) have been relatively stable since the mid to late 1990s. It is unclear why concentrations in Baltic herring are not following the observed decreases in other environmental matrices. Here, changes in long-term temporal trends in Baltic herring were examined. A number of biological variables were examined alongside the temporal trends to investigate whether fish biology e.g., growth (length, weight, age), lipid content, reproductive phase or fishing date may provide an explanation for the temporal trends observed. |
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Keywords: | Baltic herring Baltic Sea Dibenzofurans Dioxin-like polychlorinated biphenyls Polychlorinated dibenzo-p-dioxins Temporal trends |
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