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[{"key": "dc.contributor.author", "value": "Kangasniemi, Ville", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2010-12-20T20:49:12Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2010-12-20T20:49:12Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2010", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1145083", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/25722", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Olkiluodon ydinvoimalaitosta ymp\u00e4r\u00f6iv\u00e4n, j\u00e4\u00e4hdytysvesien otto- ja purkualueella olevan merialueen tilaa on seurattu yhten\u00e4isin menetelmin nelj\u00e4n vuosikymmen ajan. T\u00e4ss\u00e4 tutkimuksessa tarkastellaan alueen pohjael\u00e4inyhteis\u00f6ss\u00e4 tapahtuneita muutoksia vuosina 1973-2009. Erityishuomio kiinnitet\u00e4\u00e4n ydinvoimalaitoksen j\u00e4\u00e4hdytysvesien mahdollisiin suoriin ja v\u00e4lillisiin vaikutuksiin. Vertailualueiksi valittiin tutkimusalueen etel\u00e4puolella sijaitsevat Rauman ja Pyh\u00e4maan merialueet. Tutkimusalueen ja vertailualueiden vedenlaatu- ja pohjael\u00e4inaineistoja tarkasteltiin ja vertailtiin kesken\u00e4\u00e4n aikasarja- ja tilastoanalyysien avulla. Tulosten mukaan j\u00e4\u00e4hdytysvedet eiv\u00e4t ole vaikuttaneet merkitt\u00e4v\u00e4sti pohjael\u00e4inyhteis\u00f6n rakenteeseen Olkiluodon merialueella. Vedenlaadun ja pohjael\u00e4inyhteis\u00f6n muutokset ovat olleet tutkimusalueella ja vertailualueilla samanaikaisia ja -suuntaisia. Olkiluodon pohjael\u00e4inyhteis\u00f6ss\u00e4 havaittiin selvi\u00e4 pitk\u00e4aikaismuutoksia, joiden suurimpana syyn\u00e4 voidaan pit\u00e4\u00e4 It\u00e4meren yleist\u00e4 rehev\u00f6itymiskehityst\u00e4. Tutkimusalueen keskim\u00e4\u00e4r\u00e4inen lajim\u00e4\u00e4r\u00e4 ja kokonaistiheys ovat kaksinkertaistuneet seurantajakson aikana. Valkokatka (Monoporeia affinis) h\u00e4visi tutkimusalueelta 1990-luvun alussa, ja vieraslaji amerikansukasjalkaisen (Marenzelleria sp.) populaatio on kasvanut huomattavasti 1990-luvun puolen v\u00e4lin j\u00e4lkeen. Tulevaisuudessa uuden voimalaitosyksik\u00f6n aiheuttama j\u00e4\u00e4hdytysvesim\u00e4\u00e4r\u00e4n kasvu saattaa yhdess\u00e4 etenev\u00e4n rehev\u00f6itymisen, vieraslajien ja ilmastonmuutoksen kanssa vaikuttaa nykyist\u00e4 laajemmin Olkiluodon merialueen ekosysteemiin.", "language": "", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Ville Kangasniemi (vitakang) on 2010-12-20 20:49:09.963699. Form: Pro gradu -lomake (1 tekij\u00e4) (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake-1-tekijae). 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 2010-12-20T20:49:12Z\nNo. of bitstreams: 2\nURN:NBN:fi:jyu-201012203205.pdf: 1148121 bytes, checksum: 8963182f20ffaafa195b1f2ae6f8964a (MD5)\nlicense.html: 5051 bytes, checksum: ec95cd20e4781ce2cf9639d4bebc3df2 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2010-12-20T20:49:12Z (GMT). No. of bitstreams: 2\nURN:NBN:fi:jyu-201012203205.pdf: 1148121 bytes, checksum: 8963182f20ffaafa195b1f2ae6f8964a (MD5)\nlicense.html: 5051 bytes, checksum: ec95cd20e4781ce2cf9639d4bebc3df2 (MD5)\n Previous issue date: 2010", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "36 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": "fin", "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": "aikasarja-analyysi", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "BBI-indeksi", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "l\u00e4mp\u00f6saaste", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "NMS-ordinaatioanalyysi", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "rehev\u00f6ityminen", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Selk\u00e4meri", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "vedenlaatu", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "vieraslajit", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Pohjael\u00e4inyhteis\u00f6n pitk\u00e4aikaismuutokset Olkiluodon ydinvoimalaitoksen j\u00e4\u00e4hdytysvesien vaikutusalueella", "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-201012203205", "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": 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