| fullrecord |
[{"key": "dc.contributor.author", "value": "Puranen, Marko", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2014-01-24T13:37:06Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2014-01-24T13:37:06Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2014", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1307152", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/42870", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Hauki ja kuha esiintyv\u00e4t Suomessa usein samoissa vesist\u00f6iss\u00e4, mutta niiden vuorovaikutuksesta tiedet\u00e4\u00e4n vain v\u00e4h\u00e4n. Mik\u00e4li lajit kilpailevat samoista resursseista, runsaat kuhaistutukset tai kuhan luonnollinen yleistyminen voivat vaikuttaa negatiivisesti hauen menestykseen. T\u00e4m\u00e4n tutkimuksen tarkoitus oli selvitt\u00e4\u00e4 hauen ja kuhan kasvua ja ravinnonk\u00e4ytt\u00f6\u00e4 Suotaj\u00e4rvess\u00e4. Kasvua tarkasteltiin my\u00f6s suhteessa kasvukausien l\u00e4mp\u00f6tilaan. Ravinnonk\u00e4yt\u00f6ss\u00e4 keskityttiin hauen ja kuhan ravinnon p\u00e4\u00e4llekk\u00e4isyyteen ja siit\u00e4 mahdollisesti seuraavaan ravintokilpailuun. Lis\u00e4ksi verkkokoekalastuksilla selvitettiin j\u00e4rven kalaston yleist\u00e4 tilaa, erityisesti ajatellen petokalojen ravintotilannetta. Hauki- ja kuha-aineisto ker\u00e4ttiin p\u00e4\u00e4asiassa vapapyynnill\u00e4 avovesikauden 2012 aikana. Suotaj\u00e4rven verkkokoekalastuksen yksikk\u00f6saalis oli alhainen ja petokalojen osuus poikkeuksellisen suuri. Petokalojen tyypillisten ravintokalojen m\u00e4\u00e4r\u00e4 puolestaan oli v\u00e4h\u00e4inen. Sek\u00e4 hauen ett\u00e4 kuhan kasvu oli heikkoa tai keskinkertaista, ja kasvun riippuvuutta l\u00e4mp\u00f6tilasta havaittiin l\u00e4hinn\u00e4 nuorilla ik\u00e4ryhmill\u00e4. Ahven, erityisesti sen 0+ -ik\u00e4ryhm\u00e4, oli selv\u00e4sti merkitt\u00e4vin ravintokala molemmilla lajeilla. Lis\u00e4ksi n\u00e4ytt\u00e4isi, ett\u00e4 ahven on ratkaisevassa roolissa koko j\u00e4rven saalislajidynamiikan kannalta. Sopivan ravinnon v\u00e4hyys ja siit\u00e4 seuraava ravintokilpailu vaikuttaisi olevan Suotaj\u00e4rvess\u00e4 merkitt\u00e4v\u00e4 hauen ja kuhan kasvua rajoittava tekij\u00e4. Jatkotutkimuksissa muidenkin petokalojen, erityisesti ahvenen ottaminen mukaan tarkasteluun olisi eritt\u00e4in oleellista.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Pike and pike perch are often living in same waters in Finland but little is known about the interspecific interactions between the two species. If they compete for same resources, stocking of pike perch or its natural growth in number may have a negative impact on pike. The aim of this study was to examine the growth and foraging of pike and pike perch in Suotaj\u00e4rvi. Growth was also studied with respect to the average temperature of the growing season. The analysis of foraging was mainly concentrated on the possible overlap in prey choice and the following resource competition. Experimental gill net fishing was used to study the overall state of the fish community and more specifically to identify the possible prey species of pike and pike perch. Pike and pike perch data was gathered mostly by trolling during the 2012 open water season. Catch per unit of effort of experimental gill net fishing was low and the share of predatory fish was exceptionally high. In addition the amount of typical prey fish for pike and pike perch was low. The growth of both pike and pike perch was slow or moderate and the correlation between growth and temperature was more apparent for pike perch than pike. Perch, more specifically it\u2019s 0+-age group, dominated as prey for both pike and pike perch. Perch also seems pivotal concerning the overall prey species dynamics. Low abundance of suitable prey and the following competition seems to significantly limit the growth of pike and pike perch in Suotaj\u00e4rvi. Including other predatory fish species however, especially perch, in future studies would be essential.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Marko Puranen (makapura) on 2014-01-24 13:37:06.206798. Form: Pro gradu -lomake (1 tekij\u00e4) (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake-1-tekijae). JyX data:", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija@noreply.fi) on 2014-01-24T13:37:06Z\nNo. of bitstreams: 2\nURN:NBN:fi:jyu-201401241138.pdf: 641772 bytes, checksum: ad7fe5708460782ca67b1e926655100b (MD5)\nlicense.html: 4939 bytes, checksum: bb67f3d83b0864655ef84e0e475d1160 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2014-01-24T13:37:06Z (GMT). No. of bitstreams: 2\nURN:NBN:fi:jyu-201401241138.pdf: 641772 bytes, checksum: ad7fe5708460782ca67b1e926655100b (MD5)\nlicense.html: 4939 bytes, checksum: bb67f3d83b0864655ef84e0e475d1160 (MD5)\n Previous issue date: 2014", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (39 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": "Fry", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Ivlevin valikointi-indeksi", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "kasvun takautuva m\u00e4\u00e4ritys", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Schoenerin indeksi", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "von Bertalanffy", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "vakaat isotoopit", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Heikko ravintotilanne rajoittaa hauen (Esox lucius) ja kuhan (Sander lucioperca) kasvua Suotaj\u00e4rvess\u00e4", "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-201401241138", "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": "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": "dc.date.updated", "value": "2014-01-24T13:37:07Z", "language": null, "element": "date", "qualifier": "updated", "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.accesslevel", "value": "openAccess", "language": "fi", "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": null, "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "hauki", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kuha", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "isotoopit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kasvu", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ravinto", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "Suotaj\u00e4rvi", "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"}]
|