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[{"key": "dc.contributor.advisor", "value": "Elo, Merja", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Junninen, Kaisa", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Komonen, Atte", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Muotka, Julia", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2025-04-25T07:11:54Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2025-04-25T07:11:54Z", "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/123456789/101619", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Lahopuun m\u00e4\u00e4r\u00e4 suojelumetsiss\u00e4 on moninkertainen verrattuna talousmetsiin. Lahopuu on yksi merkitt\u00e4vimmist\u00e4 luonnonmonimuotoisuuteen vaikuttavista tekij\u00f6ist\u00e4 boreaalisissa metsiss\u00e4 ja toimii siksi hyv\u00e4n\u00e4 monimuotoisuuden indikaattorina. K\u00e4\u00e4v\u00e4t ovat yksi t\u00e4ysin lahopuusta riippuvainen lajiryhm\u00e4 ja ne kuuluvat boreaalisten metsien t\u00e4rkeimpiin lahottajasieniin. K\u00e4\u00e4v\u00e4t ovat muiden lahopuusta riippuvaisten lajien tavoin usein erikoistuneet tiettyyn puulajiin, lahoasteeseen, lahopuun kokoon ja pienilmastoon. Luonnontilaisten metsien v\u00e4hentymisen seurauksena jopa 20 % k\u00e4\u00e4vist\u00e4 on arvioitu uhanalaisiksi. T\u00e4m\u00e4n tutkimuksen tarkoituksena oli selvitt\u00e4\u00e4, voidaanko suojelualueilla saavuttaa monimuotoinen k\u00e4\u00e4p\u00e4yhteis\u00f6 ilman ennallistamistoimenpiteit\u00e4 sek\u00e4 muuttuvatko lahopuun m\u00e4\u00e4r\u00e4, k\u00e4\u00e4pien runsaus ja k\u00e4\u00e4pien lajim\u00e4\u00e4r\u00e4 eri tavalla eri maantieteellisiss\u00e4 sijainneissa. Aineistona k\u00e4ytettiin Mets\u00e4hallituksen vuosina 2002\u20132022 ker\u00e4\u00e4m\u00e4\u00e4 k\u00e4\u00e4p\u00e4- ja lahopuuaineistoa 30 suojelualuekohteesta ymp\u00e4ri Suomea. K\u00e4\u00e4pien runsautta ja lajim\u00e4\u00e4r\u00e4\u00e4 tutkittiin eri mittauskertojen ja sijaintien v\u00e4lill\u00e4 negatiivisilla binomimalleilla. Lis\u00e4ksi tutkittiin lahopuun m\u00e4\u00e4r\u00e4n ja laadun muutoksia ajan ja sijainnin mukaan, sek\u00e4 lahopuun m\u00e4\u00e4r\u00e4n vaikutusta k\u00e4\u00e4pien monimuotoistumiseen. Tulosten mukaan lahopuun m\u00e4\u00e4r\u00e4, k\u00e4\u00e4pien runsaus ja lajim\u00e4\u00e4r\u00e4 kasvoivat ajan my\u00f6t\u00e4, mutta muutokset eiv\u00e4t olleet tilastollisesti merkitt\u00e4vi\u00e4. Lahopuun m\u00e4\u00e4r\u00e4 ei muuttunut eri tavalla eri sijainneissa. Maantieteellisell\u00e4 sijainnilla havaittiin olevan heikko vaikutus k\u00e4\u00e4pien runsauteen, mutta ei k\u00e4\u00e4pien lajim\u00e4\u00e4r\u00e4n. Lis\u00e4ksi lahopuun m\u00e4\u00e4r\u00e4ll\u00e4 oli positiivinen vaikutus k\u00e4\u00e4pien esiintymiseen. Tulosten perusteella pelkk\u00e4 ajan kuluminen ei riit\u00e4 lis\u00e4\u00e4m\u00e4\u00e4n k\u00e4\u00e4pien monimuotoisuutta, vaan esiintyminen on sidoksissa erityisesti lahopuun m\u00e4\u00e4r\u00e4\u00e4n. Koska lahopuun m\u00e4\u00e4r\u00e4 ei tutkimuksessa merkitt\u00e4v\u00e4st\u00e4 lis\u00e4\u00e4ntynyt ajan my\u00f6t\u00e4, ei voida todeta, ett\u00e4 monimuotoinen k\u00e4\u00e4p\u00e4yhteis\u00f6 saavutetaan ilman ennallistamistoimia.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "One of the most significant differences affecting biodiversity between commercial and conservation forests is the amount of deadwood. The decline of deadwood is a major reason for the decline of forest species. Deadwood is one of the most important factors in biodiversity in boreal forests and thus serves as a good indicator of biodiversity. Polypores are a saproxylic species group and one of the most important wood-decaying species in boreal forests. Polypores, like many other saproxylic species, are specific to a particular deadwood, a decay stage, amount, and the microclimate they are in. As many as 20% of polypores have been assessed as endangered. The aim of this study is to examine whether a diverse polypore community can be achieved in protected areas without taking any active measures and whether the change in abundance and species richness varies in different geographical locations. The material used is polypore and deadwood data collected by Mets\u00e4hallitus Parks & Wildlife Finland in 2002-2022. The data was collected in 30 protected area sites all over Finland. The abundance and species richness of polypores were examined across time and geographical locations using negative binomial models. In addition, changes in deadwood quantity and quality over time and across locations were analyzed, as well as the effect of deadwood on polypore diversity. The results indicate that the amount of deadwood, polypore abundance, and species richness increased over time, but the changes were not statistically significant. Furthermore, the amount of deadwood did not differ across locations. However, geographical location did play a role in polypore abundance, but not species richness. These findings suggest that the passage of time alone is not enough to increase polypore diversity, as polypore occurrence is particularly dependent on the amount of deadwood. Since deadwood volume did not significantly increase over time in this study, it cannot be concluded that a diverse polypore community will develop without restoration measures.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2025-04-25T07:11:54Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2025-04-25T07:11:54Z (GMT). No. of bitstreams: 0\n Previous issue date: 2025", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "57", "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.title", "value": "Maantieteellisen sijainnin vaikutus k\u00e4\u00e4pien runsauden ja lajim\u00e4\u00e4r\u00e4n muuttumiseen luonnon lahopuulla 10 vuoden aikana", "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-202504253452", "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": "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": "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": "suojelualueet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "k\u00e4\u00e4v\u00e4t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "lahopuut", "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.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"}, {"key": "dc.description.accessibilityfeature", "value": "unknown accessibility", "language": "en", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}, {"key": "dc.description.accessibilityfeature", "value": "ei tietoa saavutettavuudesta", "language": "fi", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}]
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