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[{"key": "dc.contributor.advisor", "value": "Karjalainen, Juha", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Ruokonen, Timo", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Suomi, Iia", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2018-11-16T07:20:44Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2018-11-16T07:20:44Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2018", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/60201", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Ekologinen la\u0308hiruoka kasvattaa suosiotaan kalamarkkinoilla. Ta\u0308sta\u0308 syysta\u0308 vajaasti hyo\u0308dynnettyjen kalalajien kysynta\u0308 on kasvussa, ja uusia kalastus- ja jalostusmenetelmia\u0308 kehiteta\u0308a\u0308n jatkuvasti. Tutkimuksessa selvitettiin ja\u0308rvien kunnostamisessa ka\u0308ytetta\u0308va\u0308n hoitokalastuksen saaliin soveltuvuutta kalanjalostukseen. Tutkimuksessa tarkasteltiin hoitokalastussaaliissa yleisesti esiintyvien lahnan, ahvenen ja sa\u0308rjen pituusjakaumia nelja\u0308lta\u0308 eri ja\u0308rvelta\u0308. Saaliin pituusjakaumia verrattiin kalanjalostajien tuotannossaan ka\u0308ytta\u0308miin kokoluokkiin. Tiedonkeruussa ka\u0308ytettiin tutkimusja\u0308rvien hoitokalastusaineistoja seka\u0308 haastateltiin kalanjalostajia. Myo\u0308s eri ja\u0308rvien saaliskokojakaumia verrattiin toisiinsa. Tutkimuksessa tarkasteltiin myo\u0308s koeverkkokalastusaineistojen ja hoitokalastusaineistojen laji- ja kokojakaumatietojen samankaltaisuutta. Hoitokalastussaaliiden eri lajien kokojakaumat vaihtelivat eri ja\u0308rvien ja kalastusvuosien va\u0308lilla\u0308, ja pienten kalojen osuus kasvoi hoitokalastuksen edetessa\u0308. Kalanjalostajien haastattelujen perusteella suuri osa hoitokalastussaaliista voitaisiin hyo\u0308dynta\u0308a\u0308 kalanjalostuksessa. Pienten kalojen hyo\u0308dynta\u0308minen on kuitenkin kaikista haasteellisinta, ja niiden osuus hoitokalastussaaliista oli suuri usealla tutkimusja\u0308rvella\u0308. Koeverkkokalastusta voitaisiin hyo\u0308dynta\u0308a\u0308 hoitokalastuksen saalispotentiaalin ennakoinnissa, silla\u0308 koeverkkokalastuksen ja hoitokalastuksen saaliiden kokojakaumat olivat samankaltaisia. Vastaavasti kalaston rakennetta olisi mahdollista arvioida hoitokalastusaineistoja tarkastelemalla. Lahnan, sa\u0308rjen ja ahvenen populaatioiden rakenteesta on tuotettava tulevaisuudessa lisa\u0308tietoa niiden kysynna\u0308n kasvaessa.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Ecologically produced local food is becoming more popular. For this reason, the demand for underutilized fish species is growing on the fish market, and new fishing and fish processing methods are being developed constantly. The aim of the study was to examine the suitability of biomanipulation based fish catch for fish processing industry. I compared the size compositions of catches of different species in four different lakes. I also compared the size compositions to the size classes fish processing industry is favouring. The fishes investigated were bream (Abramis brama), roach (Rutilus rutilus), and perch (Perca fluviatilis). I also used multi-mesh gill net data used in lake monitoring to analyze, whether the catch composition of experimental gill net fishing is similar to the biomanipulation based fish catch. The length-composition of different species was differing between the study lakes and years fished. The amount of small fish also increased during the biomanipulation. Theoretically a large part of the biomanipulation-based fish catch could be utilized in fish processing industry. However, utilization of the smallest fish is very challenging, and the proportion of small fish was large on several study lakes. Multi-mesh gill net data could be used in estimating the possible fish catch from biomanipulation, as the size compositions from biomanipulation and multi-mesh gillnetting were much alike. Correspondingly data from biomanipulation could be used in estimating the structure of fish populations. Due to growing demand on the fish market, the population structures of bream, roach and perch have to be studied more comprehensively.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2018-11-16T07:20:44Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2018-11-16T07:20:44Z (GMT). No. of bitstreams: 0\n Previous issue date: 2018", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "49", "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": "ahven", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Lahna-, s\u00e4rki- ja ahvensaaliiden koostumus j\u00e4rvikalastuksissa ja erikokoisten kalojen hy\u00f6dynnett\u00e4vyys kalanjalostuksessa", "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-201811164748", "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": "s\u00e4rki", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "lahna", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "hoitokalastus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "s\u00e4rkikalat", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "j\u00e4rvet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ahven", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kalanjalostus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kalastus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "sis\u00e4vesikalastus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kalat (el\u00e4imet)", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": 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