HELCOM Metadata catalogue
Radioactive substances Cesium-137 in herring 2018
This core indicator evaluates the status of the marine environment based on concentrations of radioactive substances (Cs-137) in seawater and biota. Quantitative thresholds are used to evaluate if core indicators status is "Achieve", "Fail" or "Not assessed". Good status is achieved when concentrations reach levels measured before the Chernobyl accident in 1986.
This dataset displays the result of the indicator in HELCOM Assessment Scale 2 (Division of the Baltic Sea into 17 sub-basins) for herring.
Attribute information:
"OBJECTID" = Object identification
"HELCOM_ID" = Code of the HELCOM scale 2 assessment unit
"Indicator" = Name of HELCOM Core indicator
"Type" = Type of indicator
"Threshold value" = Threshold value for specific assessment unit
"Indicator value" = Value of indicator calculated for specific assessment unit
"Status" = Status of the indicator (“Achieve”, “Fail” or “Not assessed”)
Simple
- Date (Publication)
- 2018-06-28
- Unique resource identifier
- https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/2ac9b4b4-cf84-4c56-aad3-6c2b6192be37
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GEMET - INSPIRE themes, version 1.0
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Oceanographic geographical features
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- Keywords
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MADS
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HOLAS2 2018 Core indicator
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Core indicator
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- Use constraints
- Other restrictions
- Other constraints
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Use constraints: Data can be used freely given that the source (HELCOM) is cited.
- Access constraints
- Other restrictions
- Other constraints
- Access constraints: No limitations on public access.
- Spatial representation type
- Vector
- Metadata language
- English
- Topic category
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- Environment
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- Begin date
- 2011-01-01
- End date
- 2016-12-31
- Unique resource identifier
- EPSG:3035
- Distribution format
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ESRI Shapefile
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1.0
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ESRI Shapefile
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1.0
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- OnLine resource
- Download dataset ( WWW:LINK-1.0-http--link )
- OnLine resource
- Open in Map Viewer ( WWW:LINK-1.0-http--link )
- Hierarchy level
- Dataset
Conformance result
- Date (Publication)
- 2010-12-08
- Statement
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Herring and seawater data cover most of the Baltic Sea, but flatfish covers only southern parts of the Baltic Sea. For time series maps, data from the year 2012 were used. The data are based on 137Cs concentrations in a) herring (Clupea harengus L.), b) flounder (Platichthys flesus L.) and plaice (Pleuronectes platessa L.) and c) surface seawater (samples 0–10 m). Analyses have been done either in round fish (without head and entrails) or filets (herring), and for plaice and flounder from filets only. Concentrations (Bq kg-1) have been calculated per wet weight of the samples. Seawater concentrations (Bq m-3) have been analyzed in surface (0–10 m) water samples. Data of each matrix (herring, plaice and flounder and sea water) have been averaged by sub-basin and by year.
The data is collected by national authorities and reported annually to the HELCOM MORS Database. In addition to national quality assurance procedures, manual quality assurance is applied to the reported data and data entries are verified annually by the HELCOM MORS Expert Group.
Data was extracted from HELCOM MORS database for indicator calculation in November 2018.
Additional information:
Link to metadata of dataset used for indicator calculation:
- File identifier
- 2ac9b4b4-cf84-4c56-aad3-6c2b6192be37 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2021-09-24T13:08:24
Overviews
Spatial extent
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