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[{"key": "dc.contributor.advisor", "value": "H\u00e4m\u00e4l\u00e4inen, Heikki", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Aroviita, Jukka", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Teittinen, Assi", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2021-06-29T05:37:06Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2021-06-29T05:37:06Z", "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/123456789/76885", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Jokien ekologista tilaa arvioidaan ensisijaisesti biologisiin muuttujiin ja niiden tyyppikohtaisiin vertailuoloihin perustuen. Suomessa savimaiden jokityypeist\u00e4 ei ole riitt\u00e4v\u00e4n luonnontilaisia vertailupaikkoja ja vertailuolojen asettamisessa k\u00e4ytet\u00e4\u00e4n siksi turve- ja kivenn\u00e4ismaiden vertailupaikkojen aineistoa, ilman tutkittuja perusteita. T\u00e4m\u00e4n takia luokittelu on mahdollisesti ep\u00e4luotettavaa ja ongelma korostuu, koska savimaiden joet ovat eniten muutettuja ja kunnostusta vaativia vesimuodostumia. T\u00e4ss\u00e4 tutkimuksessa testattiin jokien luontaisiin ominaisuuksiin ja valuma-alueen maank\u00e4ytt\u00f6\u00f6n (viljely- ja asutusalue sek\u00e4 ojitettujen turvemaiden osuus) perustuvaa logistista regressiomallinnusta jokien pohjael\u00e4imist\u00f6n vertailuolojen (lajien havaitsemistodenn\u00e4k\u00f6isyyksien, pc) ennustamiseksi k\u00e4ytt\u00e4m\u00e4ll\u00e4 muiden kuin vertailupaikkojen aineistoa ja ekstrapoloimalla vertailuoloihin. Lis\u00e4ksi tarkasteltiin, eroavatko mallinnetut pc -arvot ja niihin perustuvat tilaluokituksessa k\u00e4ytett\u00e4v\u00e4t ekologiset laatusuhteet (ELS) nykyk\u00e4yt\u00e4nn\u00f6n mukaisista. Testijokityypille ennustetut pc -arvot osuivat hyvin l\u00e4helle havaittuja ja niist\u00e4 lasketut (tyyppiominaisten taksonien esiintyminen) ELS -arvot olivat k\u00e4yt\u00e4nn\u00f6ss\u00e4 samat kuin tyyppiperusteiset. Savimaiden jokityypin lajikohtaisten mallien pc ennusteet erosivat huomattavasti tyyppiperusteisista arvoista, mutta koska niist\u00e4 lasketuissa ELS -arvoissa ei ollut merkitt\u00e4v\u00e4\u00e4 eroa, oli tilaluokittelun lopputulos sama. Tulosten perusteella lajien havaitsemistodenn\u00e4k\u00f6isyyksien ja todenn\u00e4k\u00f6isesti muidenkin luokittelussa k\u00e4ytett\u00e4vien yhteis\u00f6piirteiden ennustaminen vertailuoloissa onnistuu, vaikka vertailupaikkojen aineistoa ei olisi k\u00e4yt\u00f6ss\u00e4.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "The ecological status of rivers must be assessed primarily based on biological variables and their type-specific reference conditions. In Finland, true reference sites do not exist for the river types with catchments dominated by clay soils. Therefore, reference conditions for these rivers have been formed using data from the reference sites of rivers of other catchment geology types, without scientific rationale, potentially making the classification unreliable. The most altered rivers and therefore rivers to be managed are found from regions with clay soils, which highlights the issue. Logistic regression modeling based on the natural characteristics of rivers and the land use of the catchment area (agricultural, urban and drained peatlands) was tested to determine the reference conditions (species probability of capture, pc) for benthic invertebrates, using the data from impacted sites and extrapolating to reference conditions. The modelled reference conditions (pc) and the observed to expected or Ecological Quality Ratios (EQR) status based on them and used in the status assessment were assessed to detect if they differ from those of current practice. The estimated pc values for the test-river type were very close to the observed and the EQRs calculated from them were practically identical to the type-specific ones. The pc values predicted using the models developed to the clayey soil river type were remarkably different from the presently used, but because the EQRs did not differ significantly, the result of status assessment is the same. Based on the results it is possible to estimate the probabilities of capture of benthic invertebrates, and probably other community descriptors used in assessment, even without data from reference conditions.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2021-06-29T05:37:06Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2021-06-29T05:37:06Z (GMT). No. of bitstreams: 0\n Previous issue date: 2021", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "78", "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": "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": "ennustava mallinnus", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "luokittelu", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Jokien pohjael\u00e4imist\u00f6n vertailuolojen m\u00e4\u00e4ritys ekstrapoloivalla mallinnuksella", "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-202106294075", "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": "Akvaattiset tieteet", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Aquatic sciences", "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": "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": "4012", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ekologinen tila", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "pohjael\u00e4imist\u00f6", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "valuma-alueet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mallintaminen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kivenn\u00e4ismaat", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "savimaat", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "vesist\u00f6t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "joet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "muuttujat", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "biologiset menetelm\u00e4t", "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.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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