| fullrecord |
[{"key": "dc.contributor.advisor", "value": "Lensu, Anssi", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Saarinen, Pinja", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Kuonanoja, Linda", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2025-01-27T07:21:05Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2025-01-27T07:21:05Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2024", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/99786", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Elinymp\u00e4rist\u00f6mallinnuksen avulla pyrit\u00e4\u00e4n ennustamaan eli\u00f6ille soveltuvia elinymp\u00e4rist\u00f6j\u00e4 lajille t\u00e4rkeiden elinymp\u00e4rist\u00f6muuttujien avulla. Mallinnuksen tuloksia voidaan k\u00e4ytt\u00e4\u00e4 muun muassa lajien suojelutarpeiden kartoitukseen. T\u00e4ss\u00e4 ty\u00f6ss\u00e4 pyrittiin luomaan elinymp\u00e4rist\u00f6malli kanahaukalle, joka on paitsi mets\u00e4ymp\u00e4rist\u00f6jen muutoksen vuoksi harventunut ja silm\u00e4ll\u00e4pidett\u00e4v\u00e4 laji Suomessa, my\u00f6s esiintyy alueilla, jotka ovat usein arvokkaita elinymp\u00e4rist\u00f6j\u00e4 my\u00f6s muille harventuneille vanhojen metsien lajeille. T\u00e4ss\u00e4 tutkielmassa tutkittiin, mink\u00e4laiset mets\u00e4n rakennetta kuvaavat tekij\u00e4t tai maaston ominaisuudet ovat ominaisia kanahaukan pes\u00e4paikoille ja pysyv\u00e4tk\u00f6 n\u00e4m\u00e4 tekij\u00e4t samoina Suomen laajuisella alueella, vai onko pes\u00e4paikan valintaan vaikuttavissa tekij\u00f6iss\u00e4 maantieteellist\u00e4 vaihtelua. Lis\u00e4ksi tutkittiin, voidaanko maksimientropiamallinnuksella luoda n\u00e4ihin ymp\u00e4rist\u00f6muuttujiin perustuen hyvin ennustava elinymp\u00e4rist\u00f6malli koko Suomen alueelle. Lis\u00e4ksi selvitettiin, eroaako boosted regression trees -menetelm\u00e4ll\u00e4 muodostettu malli maksimientropiamallinnuksen tuloksesta. Kanahaukan pes\u00e4paikoilla t\u00e4rkeimpi\u00e4 selitt\u00e4vi\u00e4 tekij\u00f6it\u00e4 olivat ennakko-oletusten mukaisesti vanhalle mets\u00e4lle, etenkin kuusimets\u00e4lle, tyypilliset piirteet, kuten suuri kuusen ja puuston yhteistilavuus. Mallin muodostamisessa k\u00e4ytettyjen pes\u00e4havaintojen keskittyminen Etel\u00e4-Suomeen sek\u00e4 mets\u00e4n rakennetta kuvaavien muuttujien keskiarvojen aleneminen pohjoisempaan ment\u00e4ess\u00e4 kuitenkin heikensiv\u00e4t mallin ennustavuutta pohjoisimmassa Suomessa. Boosted regression trees -menetelm\u00e4ll\u00e4 saadut tulokset mukailivat vanhalle mets\u00e4lle ominaisten muuttujien t\u00e4rkeytt\u00e4 kanahaukan pes\u00e4paikoilla. Maksimientropiamallinnuksella tuotetun elinymp\u00e4rist\u00f6mallin ennustavuus oli yleisesti ottaen hyv\u00e4, ja voidaan ajatella menetelm\u00e4n sopivan kanahaukan pes\u00e4paikkojen ennustamiseen sek\u00e4 arvokkaiden vanhojen mets\u00e4alueiden tunnistamiseen my\u00f6s valtakunnallisella tasolla.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2025-01-27T07:21:01Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2025-01-27T07:21:05Z (GMT). No. of bitstreams: 0\n Previous issue date: 2024", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "49", "language": "", "element": "format", "qualifier": "extent", "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.title", "value": "Kanahaukalle soveltuvien pes\u00e4paikkojen mallintaminen koko Suomen alueella", "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-202501271547", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "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": "Ymp\u00e4rist\u00f6tiede", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Environmental science", "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": "40151", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kanahaukka", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "elinymp\u00e4rist\u00f6", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mallintaminen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
|