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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.author", "value": "Horppila, Petteri", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2023-05-25T10:04:51Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2023-05-25T10:04:51Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2023", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/87200", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Aikaisemmissa tutkimuksissa on havaittu, ett\u00e4 tikkojen pesint\u00e4\u00e4n haavassa saattaisi vaikuttaa positiivisesti rungolla kasvavien k\u00e4\u00e4pien iti\u00f6emien m\u00e4\u00e4r\u00e4. T\u00e4ss\u00e4 tutkimuksessa tutkin vaikuttaako haavan rungolla kasvavan valkolahottajana toimivan haavank\u00e4\u00e4v\u00e4n (Phellinus tremulae) esiintyminen ja iti\u00f6emien m\u00e4\u00e4r\u00e4 tikkojen pes\u00e4puun valintaan Keski-Suomessa. Tutkin erityisesti s\u00e4\u00e4st\u00f6puiden merkityst\u00e4 haavank\u00e4\u00e4v\u00e4n ja tikkojen kannalta ja vertailin haavank\u00e4\u00e4v\u00e4n iti\u00f6emien esiintymist\u00e4 ja m\u00e4\u00e4r\u00e4\u00e4 runkokohtaisesti luonnon- ja talousmetsien v\u00e4lill\u00e4. Ker\u00e4sin tutkimuksessa aineiston tikan pes\u00e4kolojen ja haavank\u00e4\u00e4v\u00e4n m\u00e4\u00e4r\u00e4st\u00e4 sek\u00e4 haapojen (n=789) ominaisuuksista 20:lt\u00e4 tutkimuskohdeparilta. Ensimm\u00e4isen\u00e4 hypoteesinani oli, ett\u00e4 haavank\u00e4\u00e4v\u00e4n esiintyminen haavalla ja suurempi haavan l\u00e4pimitta lis\u00e4\u00e4v\u00e4t tikkojen pes\u00e4kolojen esiintymist\u00e4 haavassa. Toisena hypoteesinani oli, ett\u00e4 haavank\u00e4\u00e4v\u00e4n iti\u00f6emien m\u00e4\u00e4r\u00e4 haavalla runkokohtaisesti on suurempi luonnonmetsiss\u00e4 verrattuna talousmetsiin. Haavank\u00e4\u00e4v\u00e4n esiintyminen lis\u00e4si pes\u00e4kolojen esiintymist\u00e4 etenkin luonnonmetsiss\u00e4. Haavan l\u00e4pimitta ei vaikuttanut pes\u00e4kolojen esiintymiseen. Haavank\u00e4\u00e4v\u00e4n esiintyminen ja iti\u00f6emien m\u00e4\u00e4r\u00e4 olivat suurempia luonnonmetsiss\u00e4 kuin talousmetsiss\u00e4. Tulokset viittaavat siihen, ett\u00e4 etenkin luonnonmetsiss\u00e4 tikat tekev\u00e4t pes\u00e4kolon useammin haapaan, jossa esiintyy haavank\u00e4\u00e4p\u00e4\u00e4. Haavank\u00e4\u00e4p\u00e4 ei ole todenn\u00e4k\u00f6isesti sopeutunut talousmetsien olosuhteisiin.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Earlier studies have shown that the number of polypore fruiting bodies growing on trees could be related to the nest-site selection of woodpeckers. The purpose of this study was to find out if woodpeckers choose their nesting trees based on the occurrence and the number of polypore (Phellinus tremulae) fruiting bodies growing on aspens in the Central Finland. I was also interested in effects of retention trees on Phellinus tremulae and woodpeckers and therefore I compared the occurrence and number of fruiting bodies per trunk between natural and managed forest areas. I collected a dataset consisting of number of woodpecker nesting holes and Phellinus tremulae fruiting bodies as well as aspen (n=789) properties from 20 different research area pairs. My first hypothesis was that larger aspen diameter and polypore occurrence increases the occurrence of nesting holes. My second hypothesis was that number of Phellinus tremulae fruiting bodies per trunk is higher in natural forests compared to managed forests. Phellinus tremulae occurrence increased nesting holes occurrence on aspens especially in natural forests. Aspen diameter did not have any effect on nesting holes occurrence. The number of fruiting bodies per trunk and polypore occurrence was higher in natural forests than in managed forests. According to the results, woodpeckers prefer to make nesting holes in aspens where Phellinus tremulae is present especially in natural forests. Phellinus tremulae is probably not adapted to the managed forest conditions.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2023-05-25T10:04:51Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2023-05-25T10:04:51Z (GMT). No. of bitstreams: 0\n Previous issue date: 2023", "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": null, "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "valkolaho", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Haavank\u00e4\u00e4v\u00e4n (Phellinus tremulae) esiintyminen ja vaikutus tikkojen pes\u00e4puunvalintaan talous- ja luonnonmetsiss\u00e4", "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-202305253263", "language": "", "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.copyright", "value": "\u00a9 The Author(s)", "language": null, "element": "rights", "qualifier": "copyright", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "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": "s\u00e4\u00e4st\u00f6puut", "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": "k\u00e4\u00e4v\u00e4t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kolopesij\u00e4t", "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": "ekologia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "luonnonmets\u00e4t", "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": "sienet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "tikat", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "luonnonsuojelu", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "biodiversiteetti", "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"}]
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