Abstract：
:Mercury (Hg) in Atlantic cod (Gadus morhua) is one of many parameters that are monitored through OSPAR's Joint Assessment and Monitoring Programme. Time series for cod in the Inner Oslofjord (Norway) go back to 1984. Until 2014, annual median Hg-concentrations in cod from the Inner Oslofjord showed both significant upward long-term (whole time series) and short-term (recent 10 years) trends (when 2015 was included, the short-term trend was not significant). However, the median length of the cod sampled also showed upward trends. This may have been caused by low cod recruitment in the area since the start of the 2000s, as indicated by beach seine surveys. To investigate how length would impact the trend analysis, the Hg-concentrations in the cod were normalised to 50 cm. No significant short-term trend in Hg-concentrations could be detected for length-normalised concentrations. The results indicated that most of the upward trend in Hg-concentrations could be attributed to the sampling of larger fish. The reasons for the apparent change in the cod population demography are not conclusive, however, sampling bias must also be considered.
journal_name
Mar Environ Resjournal_title
Marine environmental researchauthors
Ruus A,Hjermann DØ,Beylich B,Schøyen M,Øxnevad S,Green NWdoi
10.1016/j.marenvres.2017.07.018subject
Has Abstractpub_date
2017-09-01 00:00:00pages
85-92eissn
0141-1136issn
1879-0291pii
S0141-1136(17)30117-4journal_volume
130pub_type
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journal_title：Marine environmental research
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journal_title：Marine environmental research
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journal_title：Marine environmental research
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journal_title：Marine environmental research
pub_type： 杂志文章
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更新日期：2009-02-01 00:00:00
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journal_title：Marine environmental research
pub_type： 杂志文章
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journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2014.03.004
更新日期：2014-07-01 00:00:00
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journal_title：Marine environmental research
pub_type： 杂志文章
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更新日期：2003-04-01 00:00:00
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journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2008.02.046
更新日期：2008-07-01 00:00:00
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journal_title：Marine environmental research
pub_type： 杂志文章
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journal_title：Marine environmental research
pub_type： 杂志文章
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journal_title：Marine environmental research
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journal_title：Marine environmental research
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journal_title：Marine environmental research
pub_type： 杂志文章
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pub_type： 杂志文章
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journal_title：Marine environmental research
pub_type： 杂志文章
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journal_title：Marine environmental research
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journal_title：Marine environmental research
pub_type： 杂志文章,评审
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journal_title：Marine environmental research
pub_type： 杂志文章
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更新日期：2008-04-01 00:00:00
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journal_title：Marine environmental research
pub_type： 杂志文章
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更新日期：2016-04-01 00:00:00
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journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2020.104959
更新日期：2020-05-01 00:00:00
