857811ca-5f1b-417c-9e01-694daa1ec10a English HELCOM Secretariat data@helcom.fi 2023-05-09T10:35:19 EPSG:3035 TBT and imposex - Imposex in biota results HOLAS 3 2023-03-23 https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/857811ca-5f1b-417c-9e01-694daa1ec10a This core indicator evaluates the status of the marine environment based on concentrations of the tributyltin (TBT) and its breakdown products dibutyltin (DBT) and monobutyltin (MBT) in biota (mussels, marine gastropods). Imposex effects of TBT on marine gastropods are used as another source of data on TBT. Quantitative thresholds are used to classify core indicators status in "Achieve", "Fail" or "Not assessed". Good status is achieved when the concentrations of TBT are below the threshold value. This dataset displays the result of the indicator in HELCOM Assessment Scale 4 (Division of the Baltic Sea into 17 sub-basins and further division into coastal and off-shore areas and division of the coastal areas by WFD water types or water bodies). Attribute specifications and units: "HELCOM_ID" = Code of the HELCOM scale 4 assessment unit "country": country in which the HELCOM assessment unit is located or a mention to an open sea area "level_2" = Name of the HELCOM assessment unit in scale 2 "Name" = Name of the HELCOM assessment unit in scale 4 "Open_sea" = Name of the HELCOM assessment unit in the open sea "F2_Name" = Name of the HELCOM assessment unit "determinan" = Determinat "est" = The estimated mean loge concentration in the assessment unit "se" = The standard error on the estimated mean log concentration in the assessment unit "fit" = The estimated mean concentration in the assessment unit "upper_cl" = Upper one-sided 95% confidence limit on the mean concentration: exp(est + qnorm(0.95) * see) "Status" = Overall Status of the indicator according to one-out-all-out HELCOM Secretariat data@helcom.fi Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme hazardous substance GEMET 2018-08-16 geonetwork.thesaurus.external.theme.gemet-en MADS HOLAS3 Core indicator Use constraints: Data can be used freely given that the source is cited (following creative commons license CC-BY). The source should be cited as: “HELCOM HOLAS 3 Dataset (2023)" Access constraints: No limitations on public access. English environment 7.5265 33.7966 52.5359 66.4241 2016-01-01 2021-12-31 ESRI Shapefile 1.0 https://maps.helcom.fi/website/MADS/download/?id=857811ca-5f1b-417c-9e01-694daa1ec10a WWW:LINK-1.0-http--link Download TBT and imposex - Imposex in biota results HOLAS 3 https://maps.helcom.fi/website/mapservice/?datasetID=857811ca-5f1b-417c-9e01-694daa1ec10a WWW:LINK-1.0-http--link View TBT and imposex - Imposex in biota results HOLAS 3 Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 The indicator is based on data held in the HELCOM COMBINE database hosted at the International Council for the Exploration of the Seas (ICES). To evaluate contamination status of Baltic Sea, the ratio of concentration of TBT in the biotic and abiotic elements of marine environment to the specified concentration (threshold) levels are used. Data are extracted from the HELCOM COMBINE database as specified in the extraction table to ensure that the values are from the appropriate measurement matrices (Assessment protocol table 1). The confidence of the indicator evaluation is high in the Kattegat and Belt Sea/The sound area since the data on TBT concentrations and imposex bivalves and marine gastropods is spatially adequate and time series are available for several stations. In the rest of the Baltic Sea, confidence is low due to very limited data availability. Additional information: http://www.helcom.fi/baltic-sea-trends/indicators/tbt-and-imposex