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[{"key": "dc.contributor.author", "value": "Afolabi, Abideen", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2011-06-29T09:51:03Z", "language": "", "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2011-06-29T09:51:03Z", "language": "", "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2011", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1163905", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/27250", "language": "", "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Lake Valkea-Kotinen is a long-term ecological monitoring site in the Evo region of southern Finland .The aim of this study was to investigate the growth and population structure of perch (Perca fluviatilis L.) in relation to diet in Valkea-Kotinen in order to provide reference data for a study investigating effects of increased loading of dissolved organic matter to nearby Lake Alinen Mustaj\u00e4rvi. Valkea-Kotinen was predominantly inhabited by small benthivorous perch. The growth relationship between opercular bone and total length of perch in the lake is similar to those earlier analysed for nearby lakes. Compared to wider growth rates, the growth of perch was slow and similar to those in similar lakes. Analyses of stable carbon and nitrogen isotopes and stomach content revealed that perch were mostly feeding on mayfly nymphs and did not undergo any clear ontogenetic dietary shifts. In summer and autumn, the perch population had more diverse diets than in spring. Zooplankton only contributes to the diet of <100 mm perch in summer, terrestrial insects and small prey fish were almost completely missing from the perch diet. Poor food condition and overall feeding behaviour are suggested to contribute to the observed slow growth and dominance of small individuals in the perch population.\r\n\r\n Valkea-Kotinen on Evon alueella sijaitseva pitk\u00e4aikaisen ekologisen seurannan kohdej\u00e4rvi. T\u00e4m\u00e4n pro gradu -ty\u00f6n tarkoituksena oli tutkia ahvenen kasvua ja populaatiorakennetta suhteessa ravintoon. Tietoja k\u00e4ytet\u00e4\u00e4n Alinen Mustaj\u00e4rven kuormitustutkimuksessa vertailuaineistona. Valkea-Kotisen ahvenet olivat p\u00e4\u00e4asiassa pienikokoisia pohjael\u00e4insy\u00f6ji\u00e4. Operculum-luusta takautuvasti arvioitu keskim\u00e4\u00e4r\u00e4inen pituuskasvu oli hidasta ja samaa luokkaa kuin muissa samantyyppisiss\u00e4 j\u00e4rviss\u00e4. Maha-analyysien ja hiilen ja typen vakaiden isotooppien analyysien mukaan ahvenet s\u00f6iv\u00e4t p\u00e4\u00e4asiassa p\u00e4iv\u00e4nkorennon toukkia. Selv\u00e4\u00e4 ravintokohteen vaihtoa kehityksen my\u00f6t\u00e4 ei havaittu. Kes\u00e4ll\u00e4 ja syksyll\u00e4 ravinto oli monipuolisempaa kuin kev\u00e4\u00e4ll\u00e4. El\u00e4inplanktonia s\u00f6iv\u00e4t vain alle 100 mm pituiset ahvenet kev\u00e4\u00e4ll\u00e4. Terrestriset hy\u00f6nteiset ja kalat puuttuivat ahvenen ravinnosta l\u00e4hes tyystin. Huonot ravinto-olot olivat luultavasti syyn\u00e4 ahventen hitaaseen kasvuun ja pieneen kokoon.", "language": "", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Abideen Afolabi (abboafol) on 2011-06-29 09:51:01.524256. Form: Master's Thesis publishing form (1 author) (https://kirjasto.jyu.fi/publish-and-buy/publishing-forms/masters-thesis-publishing-form-1-author). JyX data:", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija@noreply.fi) on 2011-06-29T09:51:03Z\r\nNo. of bitstreams: 2\r\nURN:NBN:fi:jyu-2011062911096.pdf: 626913 bytes, checksum: 2ae7492df5f62467341c9e42b598b5c7 (MD5)\r\nlicense.html: 4305 bytes, checksum: 780e889360f05d9c88a7402d0676cb69 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2011-06-29T09:51:03Z (GMT). No. of bitstreams: 2\r\nURN:NBN:fi:jyu-2011062911096.pdf: 626913 bytes, checksum: 2ae7492df5f62467341c9e42b598b5c7 (MD5)\r\nlicense.html: 4305 bytes, checksum: 780e889360f05d9c88a7402d0676cb69 (MD5)\r\n Previous issue date: 2011", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "25 sivua", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "Benthic macroinvertebrates", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "diet shifts", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "mayfly nymphs", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "population structure", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "stable isotopes analysis", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "stomach content analysis.", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Growth and population structure of perch in relation to diet in a small humic lake, Valkea-Kotinen", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-2011062911096", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.dcmitype", "value": "Text", "language": "en", "element": "type", "qualifier": "dcmitype", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Bio- ja ymp\u00e4rist\u00f6tieteiden laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Biological and Environmental Science", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Akvaattiset tieteet", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Aquatic sciences", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": "fi", "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "4012", "language": null, "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ahven", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ravinto", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "populaatiot", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "selk\u00e4rangattomat", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "pohjael\u00e4imist\u00f6", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "isotoopit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "Valkea-Kotinen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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