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[{"key": "dc.contributor.advisor", "value": "Haimi, Jari", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Salo, Niilo", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2017-08-08T17:03:28Z", "language": "", "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2017-08-08T17:03:28Z", "language": "", "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2017", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1717627", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/55036", "language": "", "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Merkitt\u00e4v\u00e4 osa kasvien yhteytt\u00e4m\u00e4st\u00e4 hiilest\u00e4 p\u00e4\u00e4tyy maan alle joko kasvibiomassana, symbionttisten sienten biomassana tai juurten eritt\u00e4min\u00e4 hiiliyhdistein\u00e4. Maaper\u00e4el\u00e4imille ja mikrobeille juurista maahan erittyneet hiiliyhdisteet ovat t\u00e4rke\u00e4 energianl\u00e4hde. Puiden juurieritys vaikuttaa siten my\u00f6s maaper\u00e4n eli\u00f6yhteis\u00f6n rakenteeseen ja sit\u00e4 kautta mahdollisesti kaikkiin maaper\u00e4n mikrobiologisiin prosesseihin. T\u00e4ss\u00e4 tutkimuksessa selvitettiin kuinka puiden juurierityksen est\u00e4minen vaikuttaa maaper\u00e4el\u00e4imien runsauteen sek\u00e4 tiettyihin maaper\u00e4n ominaisuuksiin. Tutkimusalueena oli suomalainen m\u00e4ntymets\u00e4, johon oli perustettu koealoja, joissa luonnollisia ravinne- ja energiavirtoja oli manipuloitu erist\u00e4m\u00e4ll\u00e4 koealat maaper\u00e4\u00e4n asetetuilla verkoilla. N\u00e4it\u00e4 ns. trenching-k\u00e4sittelyj\u00e4 oli kaikkiaan kolme: 1) kontrollina toimivat koealat oli j\u00e4tetty erist\u00e4m\u00e4tt\u00e4 ymp\u00e4rist\u00f6st\u00e4, 2) 50 \u03bcm silm\u00e4koon verkko eristi koealat ymp\u00e4r\u00f6iv\u00e4st\u00e4 maaper\u00e4st\u00e4 muilta paitsi sienijuurilta ja sienirihmalta sek\u00e4 3) 1 \u03bcm silm\u00e4koon verkolla eristettyihin koealoihin eiv\u00e4t kasvien juuret, sienijuuret eiv\u00e4tk\u00e4 sienirihmat p\u00e4\u00e4sseet koealan ymp\u00e4rilt\u00e4. Koealoilta ker\u00e4ttiin maaper\u00e4kairalla maan\u00e4ytteit\u00e4 kes\u00e4ll\u00e4 ja syksyll\u00e4 2016, ja niist\u00e4 eroteltiin maaper\u00e4el\u00e4imi\u00e4. Tutkimuskohteina olivat \u00e4nkyrimadot (Enchytraeidae), sukkulamadot (Nematoda) sek\u00e4 mikroniveljalkaiset (Arthropoda), esimerkiksi punkit (Acari) ja hyppyh\u00e4nt\u00e4iset (Collembola). Koealoilta selvitettiin my\u00f6s maaper\u00e4n ominaisuuksista pH, kosteus ja orgaanisen aineen m\u00e4\u00e4r\u00e4. \u00c4nkyri- ja sukkulamatojen sek\u00e4 mikroniveljalkaisten runsaudessa ei ollut eroja k\u00e4sittelyjen v\u00e4lill\u00e4, mutta \u00e4nkyrimatoja ja er\u00e4it\u00e4 mikroniveljalkaisia oli syksyll\u00e4 enemm\u00e4n. Koealat oli eristetty ymp\u00e4r\u00f6iv\u00e4st\u00e4 maaper\u00e4st\u00e4 3 vuotta ennen maaper\u00e4n\u00e4ytteiden ottamista, joten koealojen pintakasvillisuus oli mahdollisesti kompensoinut puiden juurien eritt\u00e4m\u00e4n hiilisy\u00f6tteen, ja koealoille j\u00e4\u00e4neet puiden juuret olivat hajotessaan tuottaneet maaper\u00e4el\u00e4imille ravintoresurssin, joka vaikutti maaper\u00e4el\u00e4inten runsauteen.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Significant part of the carbon allocated by forest trees ends up in the soil as biomass of plant or symbiotic fungi, or as excretion by the roots. Carbon, which is allocated belowground is a major energy source for the soil fauna and microbes. Therefore, the carbon allocation of the forest trees affects soil organism community structure and thereby all microbiological processes in the soil. In this study, the effects of exlusion of tree roots exudation on specific soil properties and abundance of soil animals was examined. The study was performed in a Scots pine (Pinus sylvestris) stand in central Finland where several different plots were established and where the natural nutrient and energy flows were manipulated by trenching. The study included three different treatments: control plots left intact and two differently trenched plots, in which soil had been trenched either with 50 \u03bcm or 1 \u03bcm nets to ca. 40 cm depth belowground. 50 \u03bcm net allowed fungi to enter the plot and 1 \u03bcm net excluded both fungal hyphae and roots. Data of this study was collected twice during the growing season 2016, in the summer and in the autumn. Soil samples were taken with soil corer and soil animals, enchytraeids (Enchytraeidae), nematodes (Nematoda) and microarthropods (Arthropoda), mainly mites (Acari) and springtails (Collembola), were extracted from the samples and soil properties (pH, moisture and organic matter contents) were measured. The trenching treatment did not affect the abundance of enchytraeids, nematodes or microarthropods nor the soil properties. The abundances of enchytraeids and some microarthropods were higher in the autumn than in the summer. The plots were established 3 years before the sampling and thus the ground vegetation may have compensated the carbon excreted by the trees or the dead roots of the trees left in the soil could have offered resources for the soil animals, and therefore, affected the abundance of the soil fauna.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Niilo Salo (niaajosa) on 2017-08-08 17:03:27.995981. Form: Pro gradu -lomake (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake). JyX data: [jyx_publishing-allowed (fi) =True]", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija.group@korppi.jyu.fi) on 2017-08-08T17:03:28Z\r\nNo. of bitstreams: 2\r\nURN:NBN:fi:jyu-201708083438.pdf: 1086556 bytes, checksum: e95fd01bcf1a55bc725e1c8ac8ae69c5 (MD5)\r\nlicense.html: 4823 bytes, checksum: 141aeb99c3c8adc3f0ced78998c7b999 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2017-08-08T17:03:28Z (GMT). No. of bitstreams: 2\r\nURN:NBN:fi:jyu-201708083438.pdf: 1086556 bytes, checksum: e95fd01bcf1a55bc725e1c8ac8ae69c5 (MD5)\r\nlicense.html: 4823 bytes, checksum: 141aeb99c3c8adc3f0ced78998c7b999 (MD5)\r\n Previous issue date: 2017", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (31 sivua)", "language": null, "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": "mikroniveljalkaiset", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "trenching-k\u00e4sittely", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "juurieritys", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Puiden juurierityksen est\u00e4misen vaikutus maaper\u00e4\u00e4n ja maaper\u00e4el\u00e4imiin", "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-201708083438", "language": null, "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": "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": 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