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[{"key": "dc.contributor.advisor", "value": "Halme, Panu", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Peura, Maiju", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Saari, Veera", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Leskisenoja, Nelli", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2024-12-17T07:15:08Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2024-12-17T07:15:08Z", "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/123456789/99022", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Puolet Suomessa tavatuista eli\u00f6lajeista el\u00e4\u00e4 metsiss\u00e4. Mets\u00e4luonnon \nmonimuotoisuus on Suomessa heikentynyt muun muassa metsienk\u00e4sittelyn \nseurauksena. Talousmetsien monimuotoisuuden k\u00f6yhtymist\u00e4 pyrit\u00e4\u00e4n \nhidastamaan s\u00e4\u00e4st\u00e4m\u00e4ll\u00e4 toimenpiteiden ulkopuolelle erityisen monimuotoiset \nkohteet, \nkuten \npienvesien \nl\u00e4hiymp\u00e4rist\u00f6t. \nPienvesist\u00e4 \nl\u00e4hteet \non \nvaltakunnallisesti arvioitu vaarantuneiksi, ja niiden uhanalaistumisen syyksi \narvellaan erityisesti ojitusta ja mets\u00e4nk\u00e4sittely\u00e4. Suomen mets\u00e4lain 10 \u00a7 mukaan \nl\u00e4hteiden ja muiden pienvesien ymp\u00e4rille t\u00e4ytyy j\u00e4tt\u00e4\u00e4 k\u00e4sittelem\u00e4t\u00f6n \nsuojavy\u00f6hyke, jotta pienilmasto ja kasvillisuus pysyv\u00e4t muuttumattomina. \nL\u00e4hteill\u00e4 suojavy\u00f6hykkeen riitt\u00e4v\u00e4\u00e4 leveytt\u00e4 ei ole viel\u00e4 tutkittu, vaikka \nesimerkiksi puroilla vastaavia tutkimuksia on tehty runsaasti. T\u00e4m\u00e4n \ntutkimuksen \ntavoitteena \noli \nselvitt\u00e4\u00e4, \nvaikuttaako \nl\u00e4hiymp\u00e4rist\u00f6n \nmets\u00e4nk\u00e4sittely, eli hakkuut ja ojitukset, l\u00e4hteiden kasviyhteis\u00f6\u00f6n. \nTutkimuskohteina oli 17 rakenteeltaan samankaltaista l\u00e4hdett\u00e4 Keski-Suomen \nalueelta. Mets\u00e4nk\u00e4sittelyn mittareina k\u00e4ytettiin l\u00e4hteen suojavy\u00f6hykkeen \nleveytt\u00e4 ja l\u00e4hteen l\u00e4hiymp\u00e4rist\u00f6n ojituksen m\u00e4\u00e4r\u00e4\u00e4, jotka mitattiin jokaiselta \nkohteelta 40 metrin s\u00e4teell\u00e4 l\u00e4hteest\u00e4. N\u00e4it\u00e4 muuttujia verrattiin havaittujen \nl\u00e4hdelajien, putkilokasvien ja sammalten m\u00e4\u00e4r\u00e4\u00e4n sek\u00e4 Shannon-Wienerin \ndiversiteetti-indeksiin. Mets\u00e4nk\u00e4sittelyn vaikutusta l\u00e4hteiden kasviyhteis\u00f6\u00f6n \ntestattiin yhteis\u00f6analyysill\u00e4 (NMDS). Tutkimustuloksista k\u00e4y ilmi, ett\u00e4 \nsuojavy\u00f6hykkeen leveydell\u00e4 ja ojituksen l\u00e4heisyydell\u00e4 on vaikutusta l\u00e4hteiden \nkasviyhteis\u00f6\u00f6n. Sammaliin l\u00e4heinen mets\u00e4nk\u00e4sittely vaikutti voimakkaammin \nkuin putkilokasveihin, oli kyse sitten allikon, puron tai tihkupintojen lajeista. \nTulokset osoittavat, ett\u00e4 riitt\u00e4v\u00e4n leve\u00e4 suojavy\u00f6hyke mets\u00e4nk\u00e4sittelylle \ntarvitaan, jotta herkk\u00e4 ja vaativa l\u00e4hdelajisto s\u00e4ilyy.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Half of all species found in Finland live in forests. Forest biodiversity has \ndeclined due to human impact, such as forest management. The biodiversity loss \nof commercial forests is aimed to be slowed down by saving particularly \nbiodiverse sites, such as surrounding of small water bodies. Springs are \nnationally assessed as endangered, and drainage and land use in forests have \nbeen identified as the causes of their decline. According to section 10 of the \nFinnish Forest Act, a buffer zone must be retained around springs to protect the \nnatural microclimate and vegetation of the site. The sufficient width of buffer \nzones around springs has not yet been studied, even though similar research has \nbeen done for streams. The purpose of this study was to examine whether forest \nmanagement, i.e. logging and drainage, affects the plant community of springs. \nThe study sites included 17 springs of similar structure in the Central Finland. \nSome of the springs were forest act sites with forest management in the \nsurrounding area and springs marked in normal field maps. Forest management \nwas measured by the width of the buffer zone around the spring and the amount \nof drainage around the spring. These were measured at each site within 40-meter \nradius of the spring. These variables were compared with the number of spring \nspecies, vascular plants and mosses identified and also with Shannon-Wiener \ndiversity index. The effect of the forest management on the plant community of \nthe springs was analysed using community analysis (NMDS). The results \nindicate that the width of the buffer zone and the amount of drainage around \nspring have an impact on the plant community of the springs. Mosses were more \nstrongly affected by forest management in surrounding area than vascular plants, \nwhether they were species of spring pool, streams or seepage area. The results \nshow that a buffer zone of sufficient width is needed to maintain sensitive spring \nspecies.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2024-12-17T07:15:08Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2024-12-17T07:15:08Z (GMT). No. of bitstreams: 0\n Previous issue date: 2024", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "40", "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": "L\u00e4hiymp\u00e4rist\u00f6n mets\u00e4nk\u00e4sittelyn vaikutukset l\u00e4hteiden kasviyhteis\u00f6\u00f6n", "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-202412177837", "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": "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": "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": "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": "4011", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mets\u00e4t", "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": "suojavy\u00f6hykkeet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mets\u00e4nk\u00e4sittely", "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": "kasvillisuus", "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": "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/collections/archival-workstation).", "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/kokoelmat/arkistotyoasema..", "language": "fi", "element": "rights", "qualifier": "accessrights", "schema": "dc"}]
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