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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": "Teppo, Anssi", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Honka, Miia", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2020-11-05T11:15:25Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2020-11-05T11:15:25Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2020", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/72497", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Euroopan unionin vesipuitedirektiivi velvoittaa j\u00e4senmaita tarkkailemaan pintavesiens\u00e4 ekologista tilaa. Pohjael\u00e4imet ovat yksi jokien ekologisessa tila-arvioinnissa k\u00e4ytett\u00e4vist\u00e4 biologisista laatutekij\u00f6ist\u00e4. Monet pohjael\u00e4imet ovat herkki\u00e4 veden happamuudelle. L\u00e4nsirannikon jokien ongelmana on ollut jo pitk\u00e4\u00e4n happamilta sulfaattimailta per\u00e4isin oleva hapan kuormitus. T\u00e4ss\u00e4 ty\u00f6ss\u00e4 tutkittiin happamuuden ajallisia ja paikallisia vaikutuksia valittujen L\u00e4nsi-Suomen jokien (N = 28) pohjael\u00e4imist\u00f6\u00f6n, erityisesti pohjael\u00e4imist\u00f6n tilaan. Tutkimuksessa oli mukana 125 n\u00e4ytteenoton tulokset vuosilta 2007\u20132018. Tutkimuskoskien (N = 34) pohjael\u00e4imist\u00f6n tilaa vertailtiin kohteen pH- ja minimi-pH-arvoihin ja happamien sulfaattimaiden osuuteen valuma-alueella. Tutkimuksessa tarkasteltiin my\u00f6s pH:n vaikutusta joidenkin n\u00e4ytteiss\u00e4 yleisten pohjael\u00e4intaksonien esiintymiseen. Happamuuden havaittiin heikent\u00e4v\u00e4n pohjael\u00e4imist\u00f6n tilaa. Pohjael\u00e4imist\u00f6n tila heikkeni sek\u00e4 keskim\u00e4\u00e4r\u00e4isen pH:n ett\u00e4 minimi-pH:n laskiessa ja happamien sulfaattimaiden alueosuuden noustessa. Happamuus laski my\u00f6s pohjael\u00e4inten taksoni- ja yksil\u00f6m\u00e4\u00e4ri\u00e4. Raja-arvona voidaan pit\u00e4\u00e4 pH-arvoa 5,5: t\u00e4t\u00e4 happamampi elinymp\u00e4rist\u00f6 v\u00e4hensi selv\u00e4sti pohjael\u00e4inten esiintymist\u00e4. Koska happamuus vaikuttaa selke\u00e4sti pohjael\u00e4imist\u00f6n tilaan, hapanta kuormitusta v\u00e4hent\u00e4v\u00e4 vesiensuojelu ja maank\u00e4yt\u00f6n ohjaus ovat eritt\u00e4in t\u00e4rkeit\u00e4 toimenpiteit\u00e4 vesienhoidon tavoitteiden saavuttamiseksi.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2020-11-05T11:15:25Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2020-11-05T11:15:25Z (GMT). No. of bitstreams: 0\n Previous issue date: 2020", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "57", "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": "happamat sulfaattimaat", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Happamuuden vaikutus pohjael\u00e4imist\u00f6n tilaan L\u00e4nsi-Suomen joissa", "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-202011056534", "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.collaborator", "value": "public", "language": "", "element": "contractresearch", "qualifier": "collaborator", "schema": "yvv"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "yvv.contractresearch.initiative", "value": "student", "language": "", "element": "contractresearch", "qualifier": "initiative", "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": "joet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "happamuus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "pH", "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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