{"accessLimitation":{"value":"noLimitations","availability":"Available","description":"Access to the resource is not subject to any access limitations and is available to all users without restriction.","uri":"http://vocab.nerc.ac.uk/collection/N07/current/UNRS/"},"authors":[{"familyName":"Crosse","givenName":"J.D.","organisationName":"Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","fullName":"Crosse, J.D."},{"familyName":"Shore","givenName":"R.F.","organisationName":"Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0002-9337-8883","fullName":"Shore, R.F."},{"familyName":"Jones","givenName":"K.C.","organisationName":"Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","fullName":"Jones, K.C."},{"familyName":"Pereira","givenName":"M.G.","organisationName":"Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","fullName":"Pereira, M.G."}],"availability":"Available","boundingBoxes":[{"westBoundLongitude":-5.13,"eastBoundLongitude":-2.63,"southBoundLatitude":55.24,"northBoundLatitude":56.08,"bounds":"{\"type\": \"Feature\",      \"properties\": {},      \"geometry\": {        \"type\": \"Polygon\",        \"coordinates\": [[[-5.13, 55.24], [-5.13, 56.08], [-2.63, 56.08], [-2.63, 55.24], [-5.13, 55.24]]]      }}","coordinates":"[[[-5.13, 55.24], [-5.13, 56.08], [-2.63, 56.08], [-2.63, 55.24], [-5.13, 55.24]]]"}],"citation":{"authors":["Crosse, J.D.","Shore, R.F.","Jones, K.C.","Pereira, M.G."],"bibtex":"https://catalogue.ceh.ac.uk/documents/2ddf56e5-fbcd-48a3-b4a5-fe2a7d5c90a4/citation?format=bib","day":16,"doi":"10.5285/2ddf56e5-fbcd-48a3-b4a5-fe2a7d5c90a4","month":2,"publisher":"NERC Environmental Information Data Centre","resourceTypeGeneral":"dataset","ris":"https://catalogue.ceh.ac.uk/documents/2ddf56e5-fbcd-48a3-b4a5-fe2a7d5c90a4/citation?format=ris","title":"Chemical contaminants and shell index values for gannet eggs","url":"https://doi.org/10.5285/2ddf56e5-fbcd-48a3-b4a5-fe2a7d5c90a4","year":2012},"custodians":[{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"custodian","email":"info@eidc.ac.uk"}],"datasetLanguages":["eng"],"datasetReferenceDate":{"publicationDate":"2012-02-16","revisionDate":"2011-09-22"},"description":"This dataset gives concentrations of chemical contaminants in the contents of eggs collected from colonies of the northern gannet, Morus bassanus, in the United Kingdom. The majority of eggs analysed are from colonies on Ailsa Craig (Firth of Clyde) and Bass Rock (Firth of Forth) and have been collected since 1971. The study examined 658 eggs collected between 1971 and 2009. Eggs analysed by the PBMS are collected by licensed collectors. Contaminants measured include organochlorine pesticides, total mercury, total PCBs and, for recent years, individual PCB congeners. \n\nThe PBMS is a long-term, national monitoring scheme that quantifies the concentrations of contaminants in the livers and eggs of selected species of predatory and fish-eating birds in Britain. Levels of contaminants are monitored to determine variations between species and regions, changes over time and effects on individual birds and their populations. The Scheme is funded by CEH, Natural England, the Environment Agency (EA) and the Campaign for Responsible Rodenticide Use (CRRU).","distributionFormats":[{"name":"Comma-separated values (CSV)","type":"text/csv","version":"unknown"}],"distributorContacts":[{"organisationName":"NERC EDS Environmental Information Data Centre","role":"distributor","email":"enquiries@ceh.ac.uk","address":{"deliveryPoint":"Maclean Building, Benson Lane, Crowmarsh Gifford","city":"Wallingford","administrativeArea":"Oxfordshire ","postalCode":"OX10 8BB","country":"United Kingdom"}}],"id":"2ddf56e5-fbcd-48a3-b4a5-fe2a7d5c90a4","incomingCitationCount":1,"incomingCitations":[{"description":"Corbett, E., Chaplow, J., Forbes, E., Ozaki, S., Nichols, M., Tso, M., Wells, C., Green, D., Cuddy, T. & Thorpe, I. 2026. System Level Indicator Project Report. JNCC Report 817. JNCC, Peterborough, ISSN 0963-8091.","url":"https://jncc.gov.uk/resources/7833f062-6bf3-4da3-96ee-7cf85098fb9d","type":"academic"}],"infoLinks":[{"url":"https://data-package.ceh.ac.uk/sd/2ddf56e5-fbcd-48a3-b4a5-fe2a7d5c90a4.zip","name":"Supporting documentation","description":"Documents available to assist with re-use of this dataset","function":"information","type":"OTHER"}],"inspireThemes":[{"theme":"Environmental Monitoring Facilities","uri":"http://inspire.ec.europa.eu/theme/ef"}],"keywordsOther":[{"value":"Morus bassanus","uri":"http://www.wikidata.org/entity/Q26675"}],"keywordsPlace":[{"value":"UK","uri":"http://sws.geonames.org/2635167"},{"value":"Bass Rock","uri":"http://sws.geonames.org/2656180"},{"value":"Ailsa Craig","uri":"http://sws.geonames.org/2657627"}],"keywordsProject":[{"value":"Predatory Bird Monitoring Scheme (PBMS)","uri":"https://digital.ceh.ac.uk/vocab/ra/7"}],"keywordsTheme":[{"value":"Pollution","uri":"http://onto.nerc.ac.uk/CEHMD/topic/15"}],"licences":[{"value":"This resource is made available under the terms of the Open Government Licence","code":"license","uri":"https://eidc.ac.uk/licences/ogl/plain"}],"lineage":"Fresh eggs are collected by licenced egg collectors and are sent to the Predatory Bird Monitoring Scheme (PBMS) at CEH Lancaster. The contents of the eggs are sampled and are 1) sent for analysis by the CEH Analytical facility and 2) retained for archive purposes. The biometric data (whole egg weight, length and breadth, etc) are entered by technician onto a MSAccess form which uploads directly to an Oracle database (managed internally by Computer Support). Chemistry batch files containing concentrations of pesticides in tissues are loaded directly into an Oracle database.","metadataDate":"2026-06-27T18:51:11","notGEMINI":false,"onlineResources":[{"url":"https://data-package.ceh.ac.uk/data/2ddf56e5-fbcd-48a3-b4a5-fe2a7d5c90a4","name":"Download the data","description":"Download a copy of this data","function":"download","type":"OTHER"},{"url":"https://data-package.ceh.ac.uk/sd/2ddf56e5-fbcd-48a3-b4a5-fe2a7d5c90a4.zip","name":"Supporting documentation","description":"Documents available to assist with re-use of this dataset","function":"information","type":"OTHER"}],"pointsOfContact":[{"familyName":"Walker","givenName":"Lee","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"pointOfContact","email":"enquiries@ceh.ac.uk","address":{"deliveryPoint":"Lancaster Environment Centre, Library Avenue, Bailrigg","city":"Lancaster","administrativeArea":"Lancashire","postalCode":"LA1 4AP","country":"United Kingdom"},"fullName":"Walker, L.","pointOfContact":"UK Centre for Ecology & Hydrology"}],"publicationDate":"2012-02-16T00:00:00.000Z","publishers":[{"organisationName":"NERC Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"publisher","email":"info@eidc.ac.uk"}],"relationships":[{"relation":"http://purl.org/dc/terms/isPartOf","target":"7ab50667-32b6-438f-9d20-af0f44351a17"}],"resourceIdentifiers":[{"code":"1318940780599","codeSpace":"CEH:EIDC:"},{"code":"https://catalogue.ceh.ac.uk/id/2ddf56e5-fbcd-48a3-b4a5-fe2a7d5c90a4"},{"code":"10.5285/2ddf56e5-fbcd-48a3-b4a5-fe2a7d5c90a4","codeSpace":"doi"}],"resourceMaintenance":[{"frequencyOfUpdate":"annually"}],"resourceType":{"value":"dataset"},"responsibleParties":[{"familyName":"Walker","givenName":"Lee","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"pointOfContact","email":"enquiries@ceh.ac.uk","address":{"deliveryPoint":"Lancaster Environment Centre, Library Avenue, Bailrigg","city":"Lancaster","administrativeArea":"Lancashire","postalCode":"LA1 4AP","country":"United Kingdom"},"fullName":"Walker, L.","pointOfContact":"UK Centre for Ecology & Hydrology"},{"familyName":"Crosse","givenName":"J.D.","organisationName":"Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","fullName":"Crosse, J.D."},{"familyName":"Shore","givenName":"R.F.","organisationName":"Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0002-9337-8883","fullName":"Shore, R.F."},{"familyName":"Jones","givenName":"K.C.","organisationName":"Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","fullName":"Jones, K.C."},{"familyName":"Pereira","givenName":"M.G.","organisationName":"Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","fullName":"Pereira, M.G."},{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"custodian","email":"info@eidc.ac.uk"},{"organisationName":"NERC Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"publisher","email":"info@eidc.ac.uk"},{"organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"rightsHolder","email":"enquiries@ceh.ac.uk"}],"rightsHolders":[{"organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"rightsHolder","email":"enquiries@ceh.ac.uk"}],"spatialReferenceSystems":[{"code":"http://www.opengis.net/def/crs/EPSG/0/27700","title":"OSGB 1936 / British National Grid"}],"spatialRepresentationTypes":["textTable"],"supplemental":[{"name":"PBMS website","url":"http://pbms.ceh.ac.uk/","function":"website"},{"description":"Crosse, John D.; Shore, Richard F.; Jones, Kevin C.; Pereira, M. Gloria. 2012 Long term trends in PBDE concentrations in gannet (Morus bassanus) eggs from two UK colonies. Environmental Pollution, 161. 93-100. ","url":"https://doi.org/10.1016/j.envpol.2011.10.003","function":"relatedArticle"},{"description":"Pereira, M.G., Walker, L.A., Best, J. & Shore, R.F. 2009. Long term trends in mercury and PCB congener concentrations in gannet (Morus bassanus) eggs in Britain. Environmental Pollution 157, 155-163. 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