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[{"key": "dc.contributor.advisor", "value": "Komonen, Atte", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Haimi, Jari", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Kataja-aho, Saana", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Kokko, Hanna", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2025-05-22T07:30:48Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2025-05-22T07:30:48Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2025", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/102667", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Suomessa peltoja on metsitetty 1970-luvulta l\u00e4htien noin 300 000 hehtaaria. Metsitettyjen peltojen pinta-ala on yleens\u00e4 ollut pieni, keskim\u00e4\u00e4rin 1,5 ha. Pienest\u00e4 koostaan huolimatta ne voivat lis\u00e4t\u00e4 mets\u00e4ekosysteemien monimuotoisuutta. Maanviljelyn j\u00e4lkeinen metsitys yleens\u00e4 lis\u00e4\u00e4 maaper\u00e4n spatiaalista heterogeenisyytt\u00e4 ja siten my\u00f6s hyppyh\u00e4nt\u00e4isten lajirikkautta ja runsautta. Hyppyh\u00e4nt\u00e4iset (Collembola) ovat olennainen osa maaper\u00e4n ravintoverkkoa ja t\u00e4rkeit\u00e4 hajottajael\u00e4imi\u00e4. Tutkimuksen tavoitteena oli selvitt\u00e4\u00e4 metsityksen vaikutuksia hyppyh\u00e4nt\u00e4isten monimuotoisuuteen. Tutkimuksessa pyrittiin vastaamaan seuraaviin kysymyksiin: 1. Eroaako kuusella metsitettyjen peltojen ja talousmetsien hyppyh\u00e4nt\u00e4islajiston monimuotoisuus toisistaan? 2. Onko maaper\u00e4n pH:lla ja orgaanisen aineen m\u00e4\u00e4r\u00e4ll\u00e4 yhteytt\u00e4 hyppyh\u00e4nt\u00e4isten monimuotoisuuteen? Lis\u00e4ksi tarkasteltiin puuston pohjapinta-alan yhteytt\u00e4 hyppyh\u00e4nt\u00e4isten monimuotoisuuteen. Tutkittavat pellot oli metsitetty noin 30 vuotta sitten. Maaper\u00e4n\u00e4ytteet ker\u00e4ttiin kymmenelt\u00e4 kivenn\u00e4ismaiden metsitetylt\u00e4 pellolta Keski-Suomesta ja Pohjanmaalta. Tutkimuksessa k\u00e4ytettiin parittaista asetelmaa, jossa jokaiselle metsitetylle pellolle valittiin vertailupariksi mahdollisimman l\u00e4helt\u00e4 samanik\u00e4inen talousmets\u00e4. Jokaiselta metsitetylt\u00e4 pellolta otettiin kaksi maan\u00e4ytett\u00e4 kahdesti vuonna 2024. Lis\u00e4ksi metsitetyn pellon vierest\u00e4 otettiin kaksi n\u00e4ytett\u00e4 kontrollialueina toimivasta talousmets\u00e4st\u00e4. Lis\u00e4ksi koealoilta ja kontrollimetsist\u00e4 otettiin nelj\u00e4 maan\u00e4ytett\u00e4, joista mitattiin pH sek\u00e4 orgaanisen aineen m\u00e4\u00e4r\u00e4. Aineisto koostui 2 947 maan pintaosissa el\u00e4vist\u00e4 hyppyh\u00e4nt\u00e4isyksil\u00f6st\u00e4. Runsaslukuisimmat lajit olivat Pogonognathellus flavescens, Lepidocyrtus lignorum ja Entomobrya nivalis. Tulokset osoittivat, ett\u00e4 yksil\u00f6m\u00e4\u00e4r\u00e4 oli suurempi syksyll\u00e4 kuin kev\u00e4\u00e4ll\u00e4. K\u00e4sittelyll\u00e4 (talousmets\u00e4/metsitetty pelto) ja muilla ymp\u00e4rist\u00f6muuttujilla, kuten pH ja orgaanisen aineksen m\u00e4\u00e4r\u00e4 ja puuston pohja pinta-ala, ei havaittu olevan vaikutusta yksil\u00f6- tai lajim\u00e4\u00e4riin. Tulosten perusteella hyppyh\u00e4nt\u00e4isyhteis\u00f6 on hyvin samanlainen metsitetyill\u00e4 pelloilla ja talousmetsiss\u00e4. N\u00e4ytt\u00e4\u00e4 silt\u00e4, ett\u00e4 30 vuotta riitt\u00e4\u00e4 mets\u00e4lajiston sukkessioon.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2025-05-22T07:30:48Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2025-05-22T07:30:48Z (GMT). No. of bitstreams: 0\n Previous issue date: 2025", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "34", "language": null, "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": null, "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "boreaalinen mets\u00e4", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "pH", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "uusekosysteemit", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Hyppyh\u00e4nt\u00e4islajiston (Collembola) monimuotoisuus metsitetyill\u00e4 pelloilla verrattuna talousmetsiin", "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-202505224505", "language": null, "element": "identifier", "qualifier": "urn", "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": null, "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": null, "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Ekologia ja evoluutiobiologia", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Ecology and evolutionary biology", "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.copyright", "value": "\u00a9 The Author(s)", "language": "fi", "element": "rights", "qualifier": "copyright", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "restrictedAccess", "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.yso", "value": "maaper\u00e4eli\u00f6st\u00f6", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "orgaaninen aines", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "metsitys", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "maaper\u00e4", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mets\u00e4t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "pellot", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "monimuotoisuus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "luonnon monimuotoisuus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mets\u00e4maa", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "hyppyh\u00e4nt\u00e4iset", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ekologia", "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"}, {"key": "dc.rights.accessrights", "value": "Tekij\u00e4 ei ole antanut lupaa avoimeen julkaisuun, joten aineisto on luettavissa vain Jyv\u00e4skyl\u00e4n yliopiston kirjaston arkistoty\u00f6semalta. Ks. https://kirjasto.jyu.fi/fi/tyoskentelytilat/laitteet-ja-tilat#autotoc-item-autotoc-2", "language": "fi", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.rights.accessrights", "value": "The author has not given permission to make the work publicly available electronically. Therefore the material can be read only at the archival workstation at Jyv\u00e4skyl\u00e4 University Library (https://kirjasto.jyu.fi/fi/tyoskentelytilat/laitteet-ja-tilat#autotoc-item-autotoc-2.", "language": "en", "element": "rights", "qualifier": "accessrights", "schema": "dc"}]
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