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[{"key": "dc.contributor.advisor", "value": "Kallio, Eva", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Koskela, Esa", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Sipari, Saana", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Hilvo, Saana", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2025-06-04T08:02:07Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2025-06-04T08:02:07Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2025", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/103058", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Puutiaisten (Ixodes ricinus) m\u00e4\u00e4r\u00e4 on viime vuosina kasvanut Suomessa ilmastonmuutoksen sek\u00e4 maank\u00e4yt\u00f6n muutosten takia. Aikaisempien tutkimusten mukaan suomalaisten kaupunkien mets\u00e4luonnosta l\u00f6ytyy enemm\u00e4n puutiaisia verrattuna kaupunkien ulkopuoliseen luontoon. N\u00e4m\u00e4 alueelliset runsauserot voisivat mahdollisesti johtua tunnetusta erosta kaupunki- ja maaseutualueiden mets\u00e4maaper\u00e4n happamuudessa. Tutkimukseni tavoitteena oli selvitt\u00e4\u00e4, onko kaupunkien ja maaseutualueiden metsien maaper\u00e4n happamuuseroilla vaikutusta Ixodes ricinus puutiaisten alueellisiin runsauseroihin. Tutkimus koostui maasto- sek\u00e4 laboratorio-osuuksista. Maastotutkimukset suoritettiin nelj\u00e4ss\u00e4 eri kaupungissa, vertaillen kaupunki- ja maaseutumetsien puutiaism\u00e4\u00e4ri\u00e4 lakanaveto-otoksilla ja maaper\u00e4n happamuutta maaper\u00e4n\u00e4ytteit\u00e4 analysoimalla. Kokeellisessa laboratoriotutkimuksessa testasin puutiaisten munien kuoriutumista ilmastokammioissa erilaisissa maaper\u00e4olosuhteissa. Nelikentt\u00e4-koeasetelmassa yhteens\u00e4 23 puutiaisnaaraan munia kasvatettiin kaupunki- ja maaseutumetsien maaperiss\u00e4 siten, ett\u00e4 maaperist\u00e4 osa j\u00e4tettiin k\u00e4sittelem\u00e4tt\u00e4 ja osa steriloitiin autoklavoimalla mikrobiomin poistamiseksi. Maaper\u00e4n happamuus sek\u00e4 puutiaistiheydet erosivat samankaltaisesti kaupunki ja maaseutualueiden v\u00e4lill\u00e4, mutta puutiaistiheyden ja happamuuden v\u00e4lill\u00e4 ei havaittu tilastollisesti merkitsev\u00e4\u00e4 yhteytt\u00e4. Laboratoriokokeessa kaupunki \u2013 ja maaseutumaaper\u00e4n happamuudella ei havaittu olevan suoraa vaikutusta puutiaisten munien menestymiseen, mutta steriloidulla kaupunkimaaper\u00e4ll\u00e4 havaittiin olevan liev\u00e4sti pienent\u00e4v\u00e4 vaikutus munien kuoriutumismenestykseen. Tutkimukseni ei tukenut hypoteesia siit\u00e4, ett\u00e4 maaper\u00e4n happamuus olisi keskeinen selitt\u00e4v\u00e4 tekij\u00e4 puutiaisten runsauseroissa kaupunki ja maaseutumetsien v\u00e4lill\u00e4. Maaper\u00e4n mikrobistolla voisi kuitenkin olla vaikutusta puutiaisten munien kuoriutumismenestykseen. Tutkimukseni perusteella jatkotutkimukset olisivat aiheellisia esimerkiksi lehtikarikkeen sek\u00e4 kasvillisuuden vaikutuksista puutiaisten esiintymiseen.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "In recent years, the changes in climate and land use have led to an increase of abundance and distribution of Ixodes ricinus ticks, in Finland. According to previous studies, there is a higher abundance of ticks in urban forest areas compared to rural areas. One possible factor explaining the difference in tick abundance could be the acidity of the soil. Previous studies have shown that the acidity of the soil differs between urban and rural forest sites and thus I hypothesized that urban areas could be more suitable habitat for ticks because of the less acidic soil. The aim of this study was to find out whether the acidity of the soil could affect the local tick abundance. The study consisted of field and laboratory tests and the field tests were conducted in four different cities. The abundance of the ticks and the properties of the soil were studied in the field by taking samples of the soil and collecting ticks by sheet dragging method. After the field studies, tick eggs were hatched in the laboratory in different soil environments to determine whether the soil affects the hatching success. The soil in which the eggs were hatched was collected to simulate urban and rural environments. Some of the soil was sterilized in order to remove the microbiome of the soil. Both soil acidity and tick abundance were higher in urban forests, but based on this study, there wasn\u2019t any correlation between the acidity of the soil and the tick abundance. The soil didn\u2019t affect the hatching success of tick eggs in the laboratory test either, but it was discovered that sterilized urban soil reduced tick egg survival slightly. Based on this study, the acidity of the soil doesn\u2019t seem to be a primary factor affecting the local differences in tick abundance and thus the study did not support the original hypothesis that soil acidity would be one of the factors behind differences in tick abundance. However, it is possible that the soil microbiome could have some effect on tick egg survival and based on this study, it would be useful to study the effects of leaf litter and vegetation on tick abundance.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2025-06-04T08:02:07Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2025-06-04T08:02:07Z (GMT). No. of bitstreams: 0\n Previous issue date: 2025", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "26", "language": null, "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": "Ixodes ricinus", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "kehitysvaiheet", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "pH", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "tautiekologia", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "ymp\u00e4rist\u00f6olosuhteet", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Maaper\u00e4n happamuuden vaikutus puutiaisten esiintymiseen kaupunkien sek\u00e4 niiden ulkopuolisten alueiden mets\u00e4luonnossa", "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-202506044862", "language": null, "element": "identifier", "qualifier": "urn", "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": null, "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": null, "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": "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": "fi", "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.yso", "value": "punkit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kaupunkiekologia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "maaper\u00e4", "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": "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"}, {"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/fi/tyoskentelytilat/laitteet-ja-tilat#autotoc-item-autotoc-2.", "language": "en", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.description.accessibilityfeature", "value": "unknown accessibility", "language": "en", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}, {"key": "dc.description.accessibilityfeature", "value": "ei tietoa saavutettavuudesta", "language": "fi", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}]
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