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[{"key": "dc.contributor.advisor", "value": "Komonen, Atte", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Old\u00e9n, Anna", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Pitk\u00e4m\u00e4ki, Tinja", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2016-01-20T08:02:31Z", "language": "", "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2016-01-20T08:02:31Z", "language": "", "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2015", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1507796", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/48380", "language": "", "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Edelt\u00e4neiden vuosisatojen maatalousk\u00e4yt\u00e4nn\u00f6t loivat elinymp\u00e4rist\u00f6j\u00e4, joihin t\u00e4n\u00e4 p\u00e4iv\u00e4n\u00e4 \r\nviitataan perinnebiotooppeina. Siirtym\u00e4 moderniin maatalouteen on muiden maank\u00e4yt\u00f6n \r\nmuutosten ohella v\u00e4hent\u00e4nyt n\u00e4it\u00e4 biologisesti, kulttuurisesti ja sosiaalisesti arvokkaita elinymp\u00e4rist\u00f6j\u00e4 murto-osaan entisest\u00e4. Perinnebiotoopeille tyypillinen avoimuus, v\u00e4h\u00e4ravinteisuus ja s\u00e4\u00e4nn\u00f6lliset h\u00e4iri\u00f6t tekev\u00e4t niist\u00e4 biologisesti monimuotoisia elinymp\u00e4rist\u00f6j\u00e4. Perinnebiotooppien pinta-alan pienenemisen ja pirstoutumisen seurauksena on ollut useiden lajien uhanalaistuminen. J\u00e4ljell\u00e4 olevien perinnebiotooppien laatua uhkaa etenkin hoidon riitt\u00e4m\u00e4tt\u00f6myys. Sammalet ovat kooltaan pieni\u00e4 ja ekologialtaan riippuvaisia sopivista mikrohabitaateista, mik\u00e4 tekee niist\u00e4 hyvi\u00e4 elinymp\u00e4rist\u00f6n indikaattoreita. T\u00e4ss\u00e4 pro gradu -ty\u00f6ss\u00e4 tutkin sammalten monimuotoisuutta ja siihen vaikuttavia ekologisia tekij\u00f6it\u00e4 perinnebiotooppiniityill\u00e4. Tarkastelin h\u00e4iri\u00f6tyypin (hoito laiduntamalla tai niitt\u00e4m\u00e4ll\u00e4), maisemarakenteen (elinymp\u00e4rist\u00f6n m\u00e4\u00e4r\u00e4) ja paikallisten ymp\u00e4rist\u00f6muuttujien (h\u00e4iri\u00f6intensiteetti, maaper\u00e4n ominaisuudet, kilpailu) merkityst\u00e4. Aineisto ker\u00e4tiin 24 niittykohteelta, jotka sijaitsivat p\u00e4\u00e4asiassa Keski-Suomen alueella. Tutkimushetkell\u00e4 12 niitty\u00e4 oli laitumena ja 12 niitty\u00e4 hoidettiin niitt\u00e4m\u00e4ll\u00e4. Tulosten perusteella h\u00e4iri\u00f6tyyppi eli hoitomuoto ei vaikuta sammalten kokonaislajim\u00e4\u00e4r\u00e4\u00e4n, mutta pes\u00e4kek\u00e4rkisten (akrokarppisten) lehtisammalten m\u00e4\u00e4r\u00e4 oli korkeampi laidunnetuilla kohteilla. Pes\u00e4kek\u00e4rkiset sammalet hy\u00f6tyiv\u00e4t laidunel\u00e4inten tallauksesta, kun taas pes\u00e4kekylkiset (pleurokarppiset) sammalet v\u00e4heniv\u00e4t laidunnuksen tai niiton seurauksena. Sammalten monimuotoisuus tutkituilla perinnebiotoopeilla riippui ensisijaisesti elinymp\u00e4rist\u00f6n laadusta, etenkin maaper\u00e4n ominaisuuksista ja kasvualustojen monipuolisuudesta. Elinymp\u00e4rist\u00f6n m\u00e4\u00e4r\u00e4ll\u00e4 eli maisemarakenteella tai niityn pinta-alalla ei ollut yhteytt\u00e4 \r\nsammalten monimuotoisuuteen. Putkilokasvit eiv\u00e4t suoraan vaikuttaneet sammalten \r\nlajim\u00e4\u00e4r\u00e4\u00e4n, mutta pohjakerroksen karike v\u00e4hensi sammalten peitt\u00e4vyytt\u00e4. T\u00e4m\u00e4n \r\ntutkimuksen perusteella perinneymp\u00e4rist\u00f6jen laadun huonontumisella on suurempi merkitys \r\nsammalyhteis\u00f6ille kuin perinnebiotooppien pinta-alan paikallisella tai alueellisella \r\nv\u00e4henemisell\u00e4.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Agricultural practices in the previous centuries have created a set of unique semi-natural habitats, nowadays referred to as traditional rural biotopes (TRBs). Because of the transition to modern agriculture and other land-use changes, there is only a fraction left of these biologically, culturally and socially valuable habitats. High biological diversity of TRBs is often associated with openness, low nutrient levels and frequent disturbances. Several species have become threatened due to the decline and fragmentation of TRB-areas. As small microhabitat specialists, bryophytes are good indicators of habitat quality, which is especially reduced by insufficient management in the remaining TRBs. In this thesis, I studied the factors affecting bryophyte diversity in semi-natural grasslands. The effects of disturbance type (management by grazing or mowing), landscape structure (habitat amount) and local environmental variables (disturbance intensity, soil properties, competition) were studied. Data were collected from 24 semi-natural grasslands located in Central Finland and P\u00e4ij\u00e4nne Tavastia. At the time, 12 of the sites were mown and 12 grazed. The results suggest that management type does not affect the total species richness of bryophytes, although acrocarpous mosses are more common in grazed sites. Acrocarpous mosses benefited from \r\nthe trampling of grazing animals, whereas pleurocarpous mosses responded negatively to \r\ngrazing or mowing. Bryophyte diversity in studied grasslands reflects habitat quality, especially in terms of soil properties and substrate heterogeneity. No relationships with habitat quantity, i.e. landscape structure or grassland area, were observed. Vascular plants had no direct negative effects on species richness, but bryophyte cover was reduced by ground layer litter. Based on this study, the reducing quality of TRB-sites causes more changes in bryophyte communities than local or regional reductions in TRB area.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Tinja Pitk\u00e4m\u00e4ki (tievpitk) on 2016-01-20 08:02:30.924321. 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 2016-01-20T08:02:31Z\r\nNo. of bitstreams: 2\r\nURN:NBN:fi:jyu-201601201171.pdf: 1468523 bytes, checksum: 8c1bca27286cc2b18d44a7b71eb6c66c (MD5)\r\nlicense.html: 4855 bytes, checksum: 26acc72b5b86ce5c304a0212dbb011af (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2016-01-20T08:02:31Z (GMT). No. of bitstreams: 2\r\nURN:NBN:fi:jyu-201601201171.pdf: 1468523 bytes, checksum: 8c1bca27286cc2b18d44a7b71eb6c66c (MD5)\r\nlicense.html: 4855 bytes, checksum: 26acc72b5b86ce5c304a0212dbb011af (MD5)\r\n Previous issue date: 2015", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (38 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": "eng", "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": "grazing", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "landscape structure", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "meadow", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "mowing", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "species richness", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "traditional rural biotopes", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "trampling", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Bryophyte diversity in semi-natural grasslands : the effects of habitat quantity and quality", "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-201601201171", "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": "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.date.updated", "value": "2016-01-20T08:02:32Z", "language": "", "element": "date", "qualifier": "updated", 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"dc.subject.yso", "value": "niityt", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "laiduntaminen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "niitto", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "sammalet", "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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