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[{"key": "dc.contributor.advisor", "value": "H\u00e4m\u00e4l\u00e4inen, Heikki", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Tolonen, Kimmo", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Nyholm, Kristiina", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Lahdenniemi, Jaana", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2019-10-09T06:26:37Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2019-10-09T06:26:37Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2019", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/65793", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Pohjael\u00e4inyhteis\u00f6jen ja niihin vaikuttavien tekij\u00f6iden tunteminen on t\u00e4rke\u00e4\u00e4 j\u00e4rven ekologisen tilan, monimuotoisuuden ja luontotyypin arvioinnin kannalta. Ulappa-alueen pohjael\u00e4inyhteis\u00f6jen vaihtelun on aiemmin todettu selittyv\u00e4n erityisesti syvyysriippuvaisilla ymp\u00e4rist\u00f6tekij\u00f6ill\u00e4 (l\u00e4mp\u00f6tila, happi, ravinnon m\u00e4\u00e4r\u00e4) sek\u00e4 biologisiin prosesseihin liittyv\u00e4ll\u00e4 spatiaalisella vaihtelulla. T\u00e4ss\u00e4 gradussa kartoitettiin ulappa-alueen pohjael\u00e4inyhteis\u00f6jen paikallista vaihtelua Saimaan Puruvedell\u00e4. Tavoitteena oli tutkia ja mallintaa havaitun vaihtelun yhteytt\u00e4 ymp\u00e4rist\u00f6tekij\u00f6ihin sek\u00e4 sijaintiin j\u00e4rven sis\u00e4ll\u00e4. Aineistona k\u00e4ytettiin 54 paikalta (syvyys 5\u201360 m) Puruveden Hummonsel\u00e4lt\u00e4 Ekman-noutimella viiten\u00e4 rinnakkaisena ker\u00e4ttyj\u00e4 pohjael\u00e4inn\u00e4ytteit\u00e4, j\u00e4rven l\u00e4mp\u00f6tila- ja vedenlaatuprofiileja, pohjanlaatuluokitusta sek\u00e4 sedimentin kuiva-aineen ja orgaanisen aineksen pitoisuuksia. Pohjael\u00e4imist\u00f6 koostui j\u00e4rven luontotyypille ominaisista taksoneista. Osittavan redundanssianalyysin (pRDA) perusteella pohjael\u00e4inten yhteis\u00f6koostumusta selittiv\u00e4t eniten syvyys, l\u00e4mp\u00f6tila, avoimuus sek\u00e4 sedimentin laatu (kuiva-aineen pitoisuus ja pohjanlaatuluokka). Lineaarisen regressioanalyysin perusteella taas yksil\u00f6tiheyden ja taksonien runsauden vaihtelua selittiv\u00e4t parhaiten syvyys ja et\u00e4isyys mannerrannasta. Ty\u00f6ss\u00e4 saatiin uutta tietoa suuren v\u00e4h\u00e4humuksisen j\u00e4rvityypin pohjael\u00e4imist\u00f6st\u00e4 sek\u00e4 siihen vaikuttavista tekij\u00f6ist\u00e4, ja tulosten perusteella voidaan ennustaa pohjael\u00e4imist\u00f6n lajiston, monimuotoisuuden ja runsauden j\u00e4rvensis\u00e4ist\u00e4 vaihtelua helposti mitattavien ymp\u00e4rist\u00f6muuttujien avulla.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2019-10-09T06:26:37Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2019-10-09T06:26:37Z (GMT). No. of bitstreams: 0\n Previous issue date: 2019", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "47", "language": "", "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": "syv\u00e4nnepohjael\u00e4imet", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "yhteis\u00f6vaihtelu", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Ulappa-alueen pohjael\u00e4inyhteis\u00f6jen paikallinen vaihtelu ja yhteys ymp\u00e4rist\u00f6tekij\u00f6ihin Saimaan Puruvedell\u00e4", "language": "", "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-201910094367", "language": "", "element": "identifier", "qualifier": "urn", "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": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "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": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"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": null, "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": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "lajistokartoitus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "surviaiss\u00e4\u00e4sket", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "j\u00e4rvet", "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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