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Övervakning av meta...
Övervakning av metaller och organiska miljögifter i marin biota, 2011
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- Bignert, Anders (author)
- Utförare miljöövervakning, Naturhistoriska riksmuseet, NRM
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- Boalt, Elin (author)
- Utförare miljöövervakning, Naturhistoriska riksmuseet, NRM
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- Danielsson, Sara (author)
- Utförare miljöövervakning, Naturhistoriska riksmuseet, NRM
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- Hedman, Jenny (author)
- Utförare miljöövervakning, Naturhistoriska riksmuseet, NRM
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- Johansson, Anna-Karin (author)
- Utförare miljöövervakning, Naturhistoriska riksmuseet, NRM
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- Miller, Aroha (author)
- Utförare miljöövervakning, Naturhistoriska riksmuseet, NRM
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- Nyberg, Elisabeth (author)
- Utförare miljöövervakning, Naturhistoriska riksmuseet, NRM
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- Berger, Urs (author)
- Utförare miljöövervakning, Stockholms universitet, SU
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- Borg, Hans (author)
- Utförare miljöövervakning, Stockholms universitet, SU
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- Eriksson, Ulla (author)
- Utförare miljöövervakning, Stockholms universitet, SU
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Holm, Karin (author)
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- Nylund, Kerstin (author)
- Utförare miljöövervakning, Stockholms universitet, SU
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- Haglund, Peter (author)
- Utförare miljöövervakning, Umeå universitet, UmU
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(creator_code:org_t)
- 2011
- Swedish 225 s.
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Series: Report / NRM ; 7:2011
- Related links:
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https://naturvardsve... (primary) (Raw object)
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https://urn.kb.se/re...
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Abstract
Subject headings
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- The environmental toxicants examined in this report can be classified into five groups –heavy metals, chlorinated compounds, brominated flame retardants, polyaromatichydrocarbons and perfluorinated compounds. Each of these contaminants has beenexamined from various sites for up to six different fish species, in blue mussels, and inguillemot eggs, for varying lengths of time. The following summary examines overalltrends, spatial and temporal, for the five groups.Condition and Fat ContentCondition and fat content in different species tended to follow the same pattern at the samesites, with a few exceptions. Most of the fish species generally displayed a decreasing trendin both condition and fat content at most sites examined. Exceptions to this were increasesin fat content seen in herring (the last ten years) and cod at Fladen; an increase in conditionfor herring at Ängskärsklubb in spring; and in perch, a decrease in fat content atKvädöfjärden but no trend in condition for the same site.Heavy MetalsDue to a change in methods for metal analysis (not Hg) in 2004, values between 2003 and2007 should be interpreted with care. From 2009 metals are analyzed at ITM, Stockholmuniversity.The longer time series in guillemot egg and spring-caught herring from the southernBothnian Sea and southern Baltic Proper show significant decreases of mercury. Theherring site in the southern Bothnain Sea indicates a local Hg-source. The rest of the timeseries show varying concentrations over the study period, and even increasing trends in e.g.cod muscle and blue mussels, but the concentrations are fairly low compared to measuredconcentrations in perch from fresh water and coastal sites. However, in most cases, theseconcentrations are above the newly suggested EU-target level of 20 ng/g wet weight.Lead is generally decreasing over the study period (in time series of sufficient length),supposedly due to the elimination of lead in gasoline. Elevated lead concentrations between2003 and 2007 (e.g. Harufjärden) should be viewed with caution (see above regardingchange in analysis methods).Cadmium concentrations show varying non-linear trends over the monitored period. It isworth noting that despite several measures taken to reduce discharges of cadmium,generally the most recent concentrations are similar to concentrations measured 30 yearsago in the longer time series.The reported nickel concentrations show no consistent decreasing trends. Some series beginwith two elevated values that exert a strong leverage effect on the regression line and maygive a false impression of decreasing trends. Chromium generally shows decreasing trends,possibly explained by a shift in analytical method. The essential trace metals, copper andzinc, show no consistent trends during the monitored period.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Keyword
- Nationellt finansierad miljöövervakning
- National
- Kust och hav
- Coast and sea
- Metaller och organiska miljögifter i biologiskt material
- Metaller och organiska miljögifter i biologiskt material
- Hav i balans samt levande kust och skärgård
- A Balanced Marine Environment, Flourishing Coastal Areas and Archipelagos
- A Non-Toxic Environment
- Giftfri miljö
Publication and Content Type
- vet (subject category)
- rap (subject category)
To the university's database
- By the author/editor
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Bignert, Anders
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Boalt, Elin
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Danielsson, Sara
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Hedman, Jenny
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Johansson, Anna- ...
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Miller, Aroha
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Nyberg, Elisabet ...
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Berger, Urs
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Borg, Hans
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Eriksson, Ulla
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Holm, Karin
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Nylund, Kerstin
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Haglund, Peter
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Environmental Sc ...
- Parts in the series
- Report / NRM ;
- By the university
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Swedish Environmental Protection Agency