| fullrecord |
[{"key": "dc.contributor.advisor", "value": "Elo, Merja", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Ovaskainen, Otso", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Jantunen, Aapo", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2024-04-11T05:48:10Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2024-04-11T05:48:10Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2024", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/94273", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Suomessa on ojitettu yli puolet soista maa- ja varsinkin mets\u00e4talouden k\u00e4ytt\u00f6\u00f6n 1900-luvulla. Ojituksilla on ollut laajoja negatiivisia vaikutuksia Suomen soiden ekologiseen tilaan, jonka takia ennallistamisia on tehty etenkin suojelualueilla. Ennallistamisen pitk\u00e4aikaiset vaikutukset tunnetaan kuitenkin viel\u00e4 yll\u00e4tt\u00e4v\u00e4n huonosti. Pro Gradu -ty\u00f6ss\u00e4ni tutkin, miten vedenpinnan taso vaikuttaa ennallistettujen soiden kasviyhteis\u00f6jen kehitykseen. Selvitin, voiko soiden vedenpinnan tasolla selitt\u00e4\u00e4 ennallistettujen soiden kasviyhteis\u00f6jen muutoksia, ja kuinka tarkasti se on mahdollista. Tutkimus suoritettiin mallintamalla 151 tutkimussuolta kymmenen vuoden ajan ker\u00e4tty\u00e4 kasvi- ja vedenpinnan tasoaineistoa HMSC-menetelm\u00e4ll\u00e4. K\u00e4ytetty aineisto sis\u00e4lt\u00e4\u00e4 ennallistettujen soiden lis\u00e4ksi luonnontilaisia ja mets\u00e4talousk\u00e4ytt\u00f6\u00f6n ojitettuja soita, ja n\u00e4ilt\u00e4 kaikilta on ker\u00e4tty aineistoa ennen ennallistettujen soiden ennallistamista sek\u00e4 2, 5 ja 10 vuotta sen j\u00e4lkeen. N\u00e4in ennallistamisen vaikutus voitiin erottaa muista soilla tapahtuneista muutoksista. Tutkimuksessa havaitsin keskim\u00e4\u00e4r\u00e4isen vedenpinnan tason nousseen ennallistamisen my\u00f6t\u00e4 nelj\u00e4ll\u00e4 kuudesta tutkitusta suotyypist\u00e4. Muutos tapahtui usein jo kahdessa vuodessa. Havaitsin ennallistamisen vaikuttaneen my\u00f6s kaikkiin tutkittuihin kasvilajeihin. Vaikka vedenpinnan tasoa mitattiin soilla vain nelj\u00e4sti kymmenen vuoden aikana, havaitsin sen ja kasvilajien runsauden v\u00e4lill\u00e4 useita selkeit\u00e4 yhteyksi\u00e4. Vedenpinnan tason tiet\u00e4minen paransi mallien kyky\u00e4 ennustaa kasvilajien runsautta 54 % tapauksista. Luotuja malleja on mahdollista k\u00e4ytt\u00e4\u00e4 ennustamaan suon ennallistamisen j\u00e4lkeist\u00e4 kehityst\u00e4 vain kahden inventointikerran perusteella. N\u00e4it\u00e4 ennusteita voidaan k\u00e4ytt\u00e4\u00e4 arvioimaan ennallistamisen j\u00e4lkeisten korjaavien toimenpiteiden hy\u00f6tyj\u00e4 ja seurannan tarvetta tapauskohtaisesti.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "More than half of the original peatlands have been drained for forestry and agriculture in Finland during the 20th century. The drainage has had an extensive impact on the ecological state of peatlands in Finland. For this reason, restoration work has been started especially in conservation areas. The long-term effects of peatland restoration are still surprisingly poorly known. In this master\u2019s thesis I studied how water table level affects the development of plant communities in restored peatlands. I studied if and how well water table level data gathered from the plant monitoring sites can be used to predict changes in the plant communities. The study was conducted by modelling plant and water table level data collected from 151 peatlands over 10 years with a method known as HMSC. The dataset contains restored, pristine, and drained peatlands and data was collected from all of them before restoration of restored peatlands and 2, 5, and 10 years after restoration. This made it possible to distinguish the effect of restoration from other changes happening in boreal peatlands. I found out that due to restoration the mean water table level rose in four of the six peatland types studied. The effect was often seen only in two years. I also found that restoration affected all the studied plant species. Although water table level was measured only four times during the ten-year period, I found that there were many clear associations with water table level and abundance of studied plant species. Knowing the water table level increased predictive power of models in 54 % of the cases. These models can be used to predict the development of a restored peatland by sampling the site only twice. These predictions can be used to estimate the benefits of post-restoration adjustments and the need for monitoring case-by-case.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2024-04-11T05:48:10Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2024-04-11T05:48:10Z (GMT). No. of bitstreams: 0\n Previous issue date: 2024", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "57", "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": "HMSC", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "lajien esiintymisen yhteismallinnus", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Vedenpinnan tason vaikutus ennallistettujen soiden kasvillisuuden kehittymiseen", "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-202404112840", "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": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Biological and Environmental Science", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Bio- ja ymp\u00e4rist\u00f6tieteiden laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Environmental science", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Ymp\u00e4rist\u00f6tiede", "language": "fi", "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.copyright", "value": "\u00a9 The Author(s)", "language": null, "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.oppiainekoodi", "value": "40151", "language": null, "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "bayesilainen menetelm\u00e4", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ennallistaminen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "suot", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kasvillisuus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ojitus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ekologia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "suokasvillisuus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ekosysteemit (ekologia)", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mallintaminen", "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.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/en/workspaces/facilities/facilities#autotoc-item-autotoc-2).", "language": "en", "element": "rights", "qualifier": "accessrights", "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"}]
|