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[{"key": "dc.contributor.advisor", "value": "Komonen, Atte", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Halme, Panu", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Pyk\u00e4l\u00e4, Juha", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Nirhamo, Aleksi", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2021-03-01T06:35:33Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2021-03-01T06:35:33Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2021", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/74423", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Vanhojen metsien haapojen m\u00e4\u00e4r\u00e4 on laskussa. T\u00e4m\u00e4 uhkaa niist\u00e4 riippuvaista lajistoa, johon lukeutuu monia epifyyttij\u00e4k\u00e4li\u00e4. Potentiaaliset keinot vanhoista haavoista riippuvaisten j\u00e4k\u00e4lien auttamiseksi keskittyv\u00e4t kuusen runsauden k\u00e4sittelyyn. T\u00e4ss\u00e4 tutkimuksessa selvitin, miten kuusen runsauden vaihtelu vaikuttaa haavan j\u00e4k\u00e4l\u00e4yhteis\u00f6ihin. Tarkastelin gradienttia, jossa toisessa p\u00e4\u00e4ss\u00e4 kuusi ei ollut metsik\u00f6ss\u00e4 l\u00e4sn\u00e4, ja toisessa p\u00e4\u00e4ss\u00e4 kuusen tiheys oli hyvin korkea. Mittasin my\u00f6s muita ymp\u00e4rist\u00f6muuttujia, joiden tiedet\u00e4\u00e4n vaikuttavan epifyyttij\u00e4k\u00e4liin. Tulosten mukaan kuusen tiheydell\u00e4 oli suuri vaikutus haavan j\u00e4k\u00e4l\u00e4yhteis\u00f6ihin. Muut merkitt\u00e4v\u00e4t ymp\u00e4rist\u00f6muuttujat olivat metsik\u00f6n ik\u00e4 ja haavan kaarnan pH. Sek\u00e4 j\u00e4k\u00e4lien kokonaislajirikkaus ett\u00e4 punaisen listan lajien rikkaus olivat korkeimmillaan, kun kuusen tiheys oli keskim\u00e4\u00e4r\u00e4inen. Niin lajirikkaus kuin punaisen listan lajien esiintyminen kasvoivat metsik\u00f6n i\u00e4n my\u00f6t\u00e4. Lajirikkaus my\u00f6s oli korkeampaa, kun haavan kaarnan pH oli alhaisempi. Kuusen tiheys vaikutti mitatuista ymp\u00e4rist\u00f6muuttujista vahvimmin my\u00f6s yhteis\u00f6koostumukseen, johon kaarnan pH:lla oli seuraavaksi vahvin vaikutus. Kuusen tiheyden suurta vaikutusta selitt\u00e4\u00e4 sen yhteydet valon saatavuuteen sek\u00e4 sukkessioon ja sit\u00e4 my\u00f6ten metsik\u00f6n ik\u00e4\u00e4n. T\u00e4m\u00e4n tutkimuksen mukaan kuusen harvennuksesta haaparikkaissa vanhoissa metsiss\u00e4 ei pit\u00e4isi aiheutua haittaa haapojen j\u00e4k\u00e4lille, joten se on suositeltavaa haavan j\u00e4k\u00e4lien pitk\u00e4n aikav\u00e4lin s\u00e4ilymisen takaamiseksi.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Aspens in old-growth forests are in decline. This threatens the numerous taxa that are dependent on old aspens, which includes several epiphytic lichens. The potential methods to aid epiphytic lichens that are dependent on aspen are centered around treatments which affect spruce density. In this study, I investigated how epiphytic lichen communities on aspen are affected by variation in spruce density in the immediate vicinity of the aspen. I examined a gradient, where in one end spruce was absent, and in the other end, spruce density was very high. I also measured other environmental variables that are known to influence lichen occurrence. The results showed that lichen communities on aspen were strongly affected by spruce density. Other important environmental variables were stand age and bark pH. Both total lichen richness and the richness of red-listed species were highest at intermediate spruce densities. They both also increased with stand age, and total lichen richness was higher when bark pH was lower. Additionally, community composition was influenced the most by spruce density, followed by bark pH. The high influence of spruce density is explained by its connections to light availability and to succession and thus stand age. This study indicated that spruce thinning in aspen-rich old-growth forests should not be detrimental to lichens on aspens, and thus it is recommended as a management method to ensure the long-term persistence of old-growth lichens on aspen.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2021-03-01T06:35:33Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2021-03-01T06:35:33Z (GMT). No. of bitstreams: 0\n Previous issue date: 2021", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "48", "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": "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": "dc.subject.other", "value": "environmental filtering", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "The occurrence of epiphytic lichens on Populus tremula in relation to the density of Picea abies", "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-202103011791", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "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": "j\u00e4k\u00e4l\u00e4t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "p\u00e4\u00e4llyskasvit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "suojelualueet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "haapa", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kuuset", "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": "lichens", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "epiphytes", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "protected areas", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "aspen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "spruce", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "forests", "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/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"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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