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Sökning: WFRF:(Förlin Lars 1950 ) > Tidskriftsartikel > Bignert A.

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  • Ericson, Y, et al. (författare)
  • Faktablad från Integrerad kustfiskövervakning: Holmön (Bottniska viken) 1989-2015.
  • 2016
  • Ingår i: Faktablad 2016 från Inst för Akvatiska Resurser, SLU. ; :2016: 2
  • Tidskriftsartikel (övrigt vetenskapligt)abstract
    • Faktabladet presenterar resultat och bedömningar från den integrerade kustfiskövervakningen vid Holmön under tidsperioden 1989-2015. Övervakningen visar för varje år ett alltmer påverkat hälsotillstånd hos abborre trots att de flesta analyserade metaller och organiska miljögifter visar nedåtgående trender eller oförändrade halter. Den tydliga och successiva påverkan som ses på hälsotillståndet på individnivå har ännu inte resulterat i några påtagliga förändringar på bestånds- och samhällsnivå.
  • Ronisz, Dan, et al. (författare)
  • Thirteen years of monitoring selected biomarkers in Eelpout (Zoarces viviparus) at reference site in the Fjällbacka Archipelago on the Swedish West Coast
  • 2005
  • Ingår i: Aquatic Ecosystem Health & Management. ; 8:2, s. 175-184
  • Tidskriftsartikel (refereegranskat)abstract
    • Several biomarkers in female and male eelpout (Zoarces viviparus) were measured at Fjällbacka, a reference site on the Swedish west coast from 1989 to 2001. Standardised procedures for sampling and measurements were used. Some of the biomarkers were largely stable through the years, for example, condition factor, blood plasma chloride concentration, white blood cell count, percentage of lymphocytes, activities of glutathione-S-transferase and glutathione reductase. Others showed greater variations but not significant trends, for example, percentage of granulocytes and activity of catalase and ethoxyresorufin-O-deethylase activity. Three variables in female eelpout showed a statistically significant downward trend from 1989 to 2001, hematocrit, body weight and length. The change in hematocrit was probably related to decreased stress due to improved sampling techniques, but the reason for changes in weight and length remain unknown. There is a need to evaluate the area for pollutants. The results indicate that there have not been any major large-scale changes in the aquatic environment affecting the fish health at the investigated site
  • Sandstrom, O., et al. (författare)
  • Three decades of Swedish experience demonstrates the need for integrated long-term monitoring of fish in marine coastal areas
  • 2005
  • Ingår i: Water Quality Research Journal of Canada. - 1201-3080. ; 40:3, s. 233-250
  • Tidskriftsartikel (refereegranskat)abstract
    • The first attempts to monitor coastal fish in Sweden were made in the 1960s and 1970s. Ecological, physiological, biochemical and environmental chemistry data were collected in separate projects. When the National Marine Monitoring Programme was revised in 1992, a new strategy was introduced for assessments of long-term trends in coastal fish communities. Annual integrated monitoring of contaminants, biomarkers and population and community indicators of ecosystem health was started in selected areas using common sentinel species. Data from one monitoring area at the coast of the Baltic proper are analyzed in this paper. The results have shown a shift in fish community structure indicating changes in ecosystem productivity. Trends have been detected in growth rate (positive) and relative gonad size (negative) in perch (Perca fluviatilis), suggesting a metabolic disturbance according to the predictive response model developed for interpretations. One factor which may have contributed to the reduced GSI was a decrease in mean age of sampled fish during the period of study. Chemical exposure was indicated by a 3-fold increase of EROD activity during the monitored 15-year period. However, concentrations of most measured contaminants in perch have decreased during the same period. The experience of the integrated approach has shown that a tentative analysis of cause and environmental significance could be made, improving the assessment, but there still remain unsolved questions to be answered in follow-up studies. The analysis has also shown the importance of long-term monitoring at several levels of biological organization to distinguish between natural variation and low-level effects on ecosystems.
  • Tairova, Z., et al. (författare)
  • Persistent organic pollutants and related biological responses measured in coastal fish using chemical and biological screening methods
  • 2017
  • Ingår i: Journal of Toxicology and Environmental Health, Part A. - 1528-7394 .- 0098-4108. ; 80:16-18, s. 862-880
  • Tidskriftsartikel (refereegranskat)abstract
    • The aim of this study was to investigate the spatial distribution, levels of dioxin-like compounds (DLC), and biological responses in two fish species. The viviparous eelpout (Zoarces viviparus) was collected from various locations in the Baltic Sea and in fjords of Kattegat and Skagerrak, while shorthorn sculpin (Myoxocephalus scorpius) was obtained at the polychlorinated biphenyl (PCB) polluted site in North West Greenland. Significant differences were detected both in contaminant levels and relative contributions from either polychlorinated dibenzodioxins (PCDD) or polychlorinated dibenzofurans (PCDF or furans) and mono-ortho- and non-ortho (coplanar) polychlorinated biphenyls (dl-PCB). Fish from the eastern Baltic Sea generally displayed higher contributions from PCDD/F compared to dl-PCB, whereas dl-PCB were generally predominated in fish from Danish, Swedish, and German sites. Levels of dl-PCB in muscle tissues were above OSPAR environmental assessment criteria (EAC) for PCB118, indicating a potential risk of adverse biological effects in the ecosystem, whereas levels of the total WHO-TEQs were below threshold for sea food suggesting limited risks for humans. No significant relationships between levels of DLC (expressed as WHO-TEQ), and biological responses such as the induction of CYP1A enzymatic activity and fry reproductive disorders were observed in eelpout. No marked relationship between WHO-TEQ and combined biological aryl hydrocarbon receptor-mediated transactivity (expressed as AhR-TEQ) was noted. However, there was a positive correlation between polycyclic aromatic hydrocarbon (PAH) metabolites and induction of CYP1A activity, suggesting that PAH exhibited greater potential than DLC to produce biological effects in eelpout from the Baltic Sea.
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