PREFIX rdf: PREFIX rdfs: PREFIX skos: PREFIX owl: PREFIX xsd: PREFIX dcterms: PREFIX dcat: PREFIX dcmitype: PREFIX foaf: PREFIX geo: PREFIX vcard: PREFIX prov: PREFIX odrs: PREFIX sosa: PREFIX sdo: PREFIX ef: PREFIX doo: PREFIX adms: PREFIX : :6c2fa997-a006-4cc4-992f-099acbf112c9 dcterms:title "Perch (Perca fluviatilis) abundance, sex, age, length and weight from Windermere North and South Basins, UK, 1943-2019" ; dcterms:identifier "https://catalogue.ceh.ac.uk/id/6c2fa997-a006-4cc4-992f-099acbf112c9","https://doi.org/10.5285/6c2fa997-a006-4cc4-992f-099acbf112c9" ; dcterms:bibliographicCitation "Feuchtmayr, H., James, B., Fletcher, J., de Ville, M., Rhodes, G., Thackeray, S. (2026). Perch (Perca fluviatilis) abundance, sex, age, length and weight from Windermere North and South Basins, UK, 1943-2019. NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/6c2fa997-a006-4cc4-992f-099acbf112c9" ; dcterms:description "Perch traps were used to catch perch (Perca fluviatilis L.) in Windermere from 1943 to 2019 at different locations throughout the North and South Basin of Windermere. Here, data from four sites are given: Green Tuft, Rawlinsons Nab, Lakeside and Chicken Rock. Perch trapped at these sites were weighed (mostly individually, but sometimes in bulk in the early years), sexed, measured and ages were determined on all individuals or a subsample. The Windermere perch population experienced a major disease (pathogen) outbreak in 1976, which induced a massive mortality, mostly among large mature individuals. The data were initially collected by the Freshwater Biological Association (FBA) but have been collected by UKCEH and its predecessor Institute of Freshwater Ecology and CEH since 1989. Perch trapping has stopped in December 2018. All sampling was undertaken and data originally collected using standard, published methods that complied to all ethical standards of the time and capture methods were not changed over time to ensure consistency. All data was obtained from animals taken from the wild to obtain measurements for scientific purposes by experienced individuals following standard procedures at the time." ; dcterms:provenance [ a dcterms:ProvenanceStatement ; rdfs:label "Data was recorded on paper and field notebooks and later transferred into spreadsheets. Please note that the data presented here are raw data that have not yet undergone full quality control or calibration. However, data have been subject to preliminary checks by a database manager (e.g. verifying that weight and length fall within plausible ranges) and any questionable data points were cross-checked against paper records/field notebooks. Perch trapping has stopped in December 2018. All sampling was undertaken and data originally collected using standard, published methods that complied to all ethical standards of the time and capture methods were not changed over time to ensure consistency. The age of the fish is given in years, the weight is given in grams and the length is given in mm. Please ensure to read the supporting documentation for further information." ] ; dcterms:spatial [ a dcterms:Location ; dcat:bbox "POLYGON((-2.973 54.279, -2.973 54.421, -2.921 54.421, -2.921 54.279, -2.973 54.279))"^^geo:wktLiteral ; ] ; dcterms:temporal [ a dcterms:PeriodOfTime ; dcat:startDate "1943-01-01"^^xsd:date ; dcat:endDate "2019-12-31"^^xsd:date ; ] ; dcat:contactPoint ; dcterms:publisher ; dcterms:isPartOf ; dcterms:relation , , , , , , , , ; dcterms:subject "Windermere", , "perch", , ; prov:wasGeneratedBy , :6c2fa997-a006-4cc4-992f-099acbf112c9_fund1 ; a dcat:Dataset; dcterms:type dcmitype:Dataset ; dcterms:available "2026-04-29"^^xsd:date ; dcat:landingPage , ; dcterms:license ; dcterms:accessRights ; dcterms:theme ; dcat:distribution [ dcat:accessURL ; dcterms:license ; dcterms:accessRights ; dcterms:format [ a dcterms:IMT ; rdf:value "Comma-separated values (CSV)" ; rdfs:label "Comma-separated values (CSV)" ] ; ]; dcterms:creator , :6c2fa997-a006-4cc4-992f-099acbf112c9_a1, :6c2fa997-a006-4cc4-992f-099acbf112c9_a2, :6c2fa997-a006-4cc4-992f-099acbf112c9_a3, :6c2fa997-a006-4cc4-992f-099acbf112c9_a4, :6c2fa997-a006-4cc4-992f-099acbf112c9_a5 ; dcterms:language . a foaf:Person ; foaf:name "Feuchtmayr, H." ; foaf:familyName "Feuchtmayr" ; foaf:givenName "H." ; vcard:hasEmail "enquiries@ceh.ac.uk" ; foaf:member ; . a foaf:Organization ; foaf:name "NERC EDS Environmental Information Data Centre" ; vcard:hasEmail "info@eidc.ac.uk" ; foaf:member ; . a foaf:Person ; foaf:name "Feuchtmayr, H." ; foaf:familyName "Feuchtmayr" ; foaf:givenName "Heidrun" ; vcard:hasEmail "enquiries@ceh.ac.uk" ; foaf:member ; . :6c2fa997-a006-4cc4-992f-099acbf112c9_a1 a foaf:Person ; foaf:name "James, B." ; foaf:familyName "James" ; foaf:givenName "Ben" ; vcard:hasEmail "pattyfold@outlook.com" ; foaf:member [foaf:name "UK Centre for Ecology & Hydrology"] ; . :6c2fa997-a006-4cc4-992f-099acbf112c9_a2 a foaf:Person ; foaf:name "Fletcher, J." ; foaf:familyName "Fletcher" ; foaf:givenName "Janice" ; vcard:hasEmail "janicemaryfletcher@gmail.com" ; foaf:member ; . :6c2fa997-a006-4cc4-992f-099acbf112c9_a3 a foaf:Person ; foaf:name "de Ville, M." ; foaf:familyName "de Ville" ; foaf:givenName "Mitzi" ; vcard:hasEmail "parahills@googlemail.com" ; foaf:member ; . :6c2fa997-a006-4cc4-992f-099acbf112c9_a4 a foaf:Person ; foaf:name "Rhodes, G." ; foaf:familyName "Rhodes" ; foaf:givenName "Glenn" ; vcard:hasEmail "enquiries@ceh.ac.uk" ; foaf:member ; . :6c2fa997-a006-4cc4-992f-099acbf112c9_a5 a foaf:Person ; foaf:name "Thackeray, S." ; foaf:familyName "Thackeray" ; foaf:givenName "Stephen" ; vcard:hasEmail "enquiries@ceh.ac.uk" ; foaf:member ; . a skos:Concept; skos:prefLabel "Environmental survey"; rdfs:label "Environmental survey" . a skos:Concept; skos:prefLabel "fish"; rdfs:label "fish" . a skos:Concept; skos:prefLabel "ecological abundance"; rdfs:label "ecological abundance" . a foaf:Organization ; foaf:name "UK Centre for Ecology & Hydrology" . a prov:Activity ; rdfs:label "UK-SCaPE" . :6c2fa997-a006-4cc4-992f-099acbf112c9_fund1 a prov:Activity ; rdfs:label "NC-UK" .