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[{"key": "dc.contributor.advisor", "value": "Kotiaho, Janne", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Kareksela, Santtu", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Nordfors, Johanna", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2016-06-22T13:27:51Z", "language": "", "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2016-06-22T13:27:51Z", "language": "", "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2016", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1545516", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/50572", "language": "", "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Biodiversiteetti on maailmanlaajuisesti laskusuunnassa. T\u00e4m\u00e4 on yhteydess\u00e4 lajien levitt\u00e4ytymiseen, sukupuuttoihin ja muuttuviin elinymp\u00e4rist\u00f6ihin. N\u00e4m\u00e4 tekij\u00e4t aiheuttavat my\u00f6s yhteis\u00f6jen v\u00e4list\u00e4 ja sis\u00e4ist\u00e4 samankaltaistumista. T\u00e4t\u00e4 prosessia kutsutaan biologiseksi homogenisaatioksi. Biologisella homogenisaatiolla on ekologisia ja evolutiivisia seurauksia, jotka voivat vaikuttaa yhteis\u00f6n tulevaisuuden h\u00e4iri\u00f6iden ja muutosten vastustus- ja sietokykyyn. On my\u00f6s mahdollista, ett\u00e4 heikentyneiden elinymp\u00e4rist\u00f6jen ennallistaminen saattaa vaikeutua, jos niiden toipumispotentiaali on laskenut homogenisaation seurauksena. Soidenennallistaminen t\u00e4ht\u00e4\u00e4 ekosysteemien toimivuuden ja alkuper\u00e4isen diversiteetin palauttamiseen. On kuitenkin mahdollista, ett\u00e4 homogenisaatio prosessin seurauksena n\u00e4iden tavoitteiden saavuttaminen vaikeutuu. T\u00e4m\u00e4n tutkimuksen tavoitteena on selvitt\u00e4\u00e4: 1. Vaikuttaako h\u00e4iri\u00f6n voimakkuus soiden kasviyhteis\u00f6jen sis\u00e4iseen samankaltaistumiseen? ja 2. Pystyyk\u00f6 ennallistaminen palauttamaan alkuper\u00e4isen yhteis\u00f6n sis\u00e4isen heterogeenisyyden ja riippuuko ennallistamisen vaikutus yhteis\u00f6n samankaltaistumiseen h\u00e4iri\u00f6n voimakkuudesta? Tutkimus toteutettiin Etel\u00e4-Suomessa r\u00e4meill\u00e4 mittaamalla kasviyhteis\u00f6j\u00e4 38 koealalla, jotka jakautuvat kolmeen kategoriaan: luonnontilaiset, ojitetut ja ennallistetut alat. Tulokset olivat erilaisia kun kasvilajien peitt\u00e4vyydet otettiin huomioon. Kun peitt\u00e4vyyksi\u00e4 ei huomioitu, voimakkaampi h\u00e4iri\u00f6 lis\u00e4si yhteis\u00f6n sis\u00e4ist\u00e4 samankaltaistumista verrattuna v\u00e4hemm\u00e4n h\u00e4irittyyn alueeseen. Ennallistettujen kohteiden suokasviyhteis\u00f6iss\u00e4 havaittiin sis\u00e4ist\u00e4 homogenisaatiota verrattuna luonnontilaisiin yhteis\u00f6ihin. H\u00e4iri\u00f6n voimakkuus vaikutti lis\u00e4ksi 5 vuotta sitten ennallistettujen kasviyhteis\u00f6jen sis\u00e4iseen homogenisaatioon. Toisaalta lajien peitt\u00e4vyydet huomioitaessa, ojitettujen ja ennallistettujen kohteiden suokasviyhteis\u00f6t olivat sis\u00e4isesti heterogeenisempia verrattuna luonnontilaisiin yhteis\u00f6ihin. T\u00e4m\u00e4 liittyy luultavasti suokasviyhteis\u00f6jen vakauteen luonnontilaisilla soilla, joilla valtalajit ovat vakiinnuttaneet paikkansa. Minun tulokseni osoittavat, ett\u00e4 homogenisaatio on voimakkaasti mittakaavasidonnainen.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Global biodiversity is declining and it is strongly connected to species invasions, extinctions and changing habitats. These patterns are also causing increasing similarity between and within communities. This process is called biological homogenization. Biological homogenization has ecological and evolutionary consequences that can affect the future resilience and resistance of communities. Thus it is also possible that restoration of degraded communities might be compromised if homogenization has affected their recovery potential. A peatland restoration aims to reviving ecosystem functioning and diversity. However, there is a possibility that reaching these goals becomes harder as a result of the homogenization process. The aim of this study is to find out (1) whether the degree of disturbance affect within site similarity of peatlands plant communities and (2) can restoration recover the original within site heterogeneity of community and is the effect of restoration on community similarity dependent on the degree of disturbance? The study is implemented on plant communities of boreal peatlands in southern Finland in 38 sites that fall in 3 categories: pristine, drained and restored sites. The results considering species present absence data (i.e. no abundances) show that stronger disturbance increased similarity within plant communities compared to less disturbed parts of the peatland sites. There was evidence of homogenization also within restored peatland plant communities when compared to pristine communities. In addition, the degree of disturbance affected homogenization within peatland plant communities restored 5 years ago. However, when the abundance of species was taken into account drained and restored peatland plant communities where more heterogeneous within site compared to pristine communities. This is most likely related to more stable peatland plant communities in pristine sites where dominant most abundant species have established their places within site. My results show that homogenization is strongly perspective related.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Johanna Nordfors (joelnord) on 2016-06-22 13:27:50.541622. Form: Pro gradu -lomake (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake). 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No. of bitstreams: 2\r\nURN:NBN:fi:jyu-201606223327.pdf: 400113 bytes, checksum: df48e3b59c1372b8de40affac39da9b1 (MD5)\r\nlicense.html: 1252 bytes, checksum: 6ed9a0e39a7afeeedb8e660b2fc3f36f (MD5)\r\n Previous issue date: 2016", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (23 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": "eng", "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": "community ecology", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": 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