Metadata catalogue
Contaminants-DDT: stations below LOD/LOQ v2019
This product displays the stations where DDT has been measured and the values present in EMODnet Chemistry infrastructure are always below the limit of detection or quantification (LOD/LOQ), i.e quality values found in EMODnet validated dataset can be equal to 6 or Q.
It is necessary to take into account that LOD/LOQ can change with time. These products aggregate data by station, producing only one final value for each station (above, below or above/below).
EMODnet Chemistry has included the gathering of contaminants data since the beginning of the project in 2009.
For the maps for EMODnet Chemistry Phase III, it was requested to plot data per matrix (water,sediment, biota), per biological entity and per chemical substance.
The series of relevant map products have been developed according to the criteria D8C1 of the MSFD Directive, specifically focusing on the requirements under the new Commission Decision 2017/848 (17th May 2017). The Commission Decision points to relevant threshold values that are specified in the WFD, as well as relating how these contaminants should be expressed (units and matrix etc.) through the related Directives i.e. Priority substances for Water. EU EQS Directive does not fix any threshold values in sediments. On the contrary Regional Sea Conventions provide some of them, and these values have been taken into account for the development of the visualization products.
To produce the maps the following process has been followed:
1. Data collection through SeaDataNet standards (CDI+ODV)
2. Harvesting, harmonization, validation and P01 code decomposition of data
3. SQL query on data sets from point 2
4. Production of map with each point representing at least one record that match the criteria
The harmonization of all the data has been the most challenging task considering the heterogeneity of the data sources, sampling protocols.
Preliminary processing were necessary to harmonize all the data :
• For water: contaminants in the dissolved phase;
• For sediment: data on total sediment (regardless of size class) or size class < 2000 μm
• For biota: contaminant data will focus on molluscs, on fish (only in the muscle), and on crustaceans
• Exclusion of data values equal to 0
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Citation proposal
National Institute of Oceanography and Applied Geophysics - OGS, Division of Oceanography. Contaminants-DDT: stations below LOD/LOQ v2019. https://services.mspdata.eu:/geonetwork/srv/api/records/fbc06230-eab5-410e-96d5-ee74abf1f86b |
Simple
- Alternate title
- DDT_b_LOD_LOQ_stations_v2019
- Date ( Creation )
- 2019-11-26
- Edition
- 1.0
- Identifier
- fbc06230-eab5-410e-96d5-ee74abf1f86b
- Credit
- EMODnet Chemistry
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- web site
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- web site
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- http://www.ismar.cnr.it
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- http://www.ogs.trieste.it/
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- http://www.demokritos.gr
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- http://www.kolgimet.ru/
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- http://www.bfa-fisch.de
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- https://www.awi.de/
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- https://www.uscg.mil/
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- https://www.whoi.edu/
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- http://imbr-ras.ru
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- Thèmes Sextant ( Theme )
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- /Chemical Environment/Contaminants
- GEMET - INSPIRE themes, version 1.0 ( Theme )
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- Oceanographic geographical features
- Parameter Discovery Vocabulary (P02) ( parameter )
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- Pesticide concentrations in biota , Pesticide concentrations in water bodies , Pesticide concentrations in sediment
- EMODnet Chemistry aggregated parameter names ( parameter )
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- SeaVoX salt and fresh water body gazetteer ( reference-geographical-area )
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- North Sea , Northeast Atlantic Ocean (40W) , Baltic Sea , Mediterranean Sea , Black Sea
- Keywords ( Theme )
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- EMODnet Chemistry
- Matrix Categories ( parameter )
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- biota , water body , sediment
- EMODnet Chemistry chemical groups ( parameter )
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- Pesticides and biocides
- Use limitation
- CC BY 4.0: https://creativecommons.org/licenses/by/4.0/
- Access constraints
- Other restrictions
- Use constraints
- unrestricted
- Other constraints
- no limitations
- Spatial representation type
- Vector
- Denominator
- 0
- Metadata language
- eng
- Topic category
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- Oceans
- Description
- Europe
))
Vertical extent
- Reference system identifier
- EPSG / WGS 84 (EPSG 4326)
- Geometric object type
- Point
- Distribution format
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- OGC:WMC (1.1.0 )
Distributor
Distributor
- Website
- web site
- OnLine resource
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Contaminants:DDT_b_LOD_LOQ_stations
DDT: stations below LOD/LOQ
- OnLine resource
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Proposal for generating dedicated maps on contaminants
Description of the methodology for the development of the products
- OnLine resource
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Direct Download
Direct Download
- OnLine resource
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DDT: stations below LOQ
Link to download the image of the WMS service
- OnLine resource
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Contaminants:DDT_b_LOD_LOQ_stations
DDT: stations below LOD/LOQ
- Hierarchy level
- Series
Conformance result
- Date ( Publication )
- 2010-12-08
- Explanation
- See the referenced specification
- Statement
- The data used as input for this product have been extracted from the EMODnet Chemistry Download Service: https://emodnet-chemistry.maris.nl/search
Metadata
- File identifier
- fbc06230-eab5-410e-96d5-ee74abf1f86b XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Series
- Hierarchy level name
- Product record
- Date stamp
- 2021-09-02T15:55:46
- Metadata standard name
- ISO 19115:2003/19139 - EMODNET - SDN
- Metadata standard version
- 1.0
