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dc.contributor.authorTambets, Meelis
dc.contributor.authorKärgenberg, Einar
dc.contributor.authorThorstad, Eva Bonsak
dc.contributor.authorSandlund, Odd Terje
dc.contributor.authorØkland, Finn
dc.contributor.authorThalfeldt, Mart
dc.coverage.spatialEstonia, Estlandnb_NO
dc.date.accessioned2019-01-14T13:16:47Z
dc.date.available2019-01-14T13:16:47Z
dc.date.created2018-12-18T15:14:01Z
dc.date.issued2018
dc.identifier.citationBoreal environment research. 2018, 23 339-353.nb_NO
dc.identifier.issn1239-6095
dc.identifier.urihttp://hdl.handle.net/11250/2580521
dc.description.abstractTo study the effects of a dispersal barrier on migration of the semi-anadromous vimba bream in the Pärnu River, Estonia, we tagged thirty fish with acoustic transmitters and released above the barrier. Tagged fish showed variation in behaviour, and 16 different spawning movement patterns were identified. Several fish moved > 25 km upstream. Batch spawning was suggested by stops in up to four different spawning areas. The Fish descended to the sea after spawning in spring; females earlier than males. After spending on average 137 days in the sea, they returned to the river during autumn and stayed in the river on average 174 days until the next spawning. The fish were most active during sunrise and sunset. In conclusion, the study shows that the dam prevents a diversification of migration behaviour and the associated expansion of spawning areas. A more efficient fishway could promote population growth and improve stock status.nb_NO
dc.description.abstractEffects of a dispersal barrier on freshwater migration of the vimba bream (Vimba vimba)nb_NO
dc.language.isoengnb_NO
dc.titleEffects of a dispersal barrier on freshwater migration of the vimba bream (Vimba vimba)nb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.subject.nsiVDP::Zoologiske og botaniske fag: 480nb_NO
dc.subject.nsiVDP::Zoology and botany: 480nb_NO
dc.source.pagenumber339-353nb_NO
dc.source.volume23nb_NO
dc.source.journalBoreal environment researchnb_NO
dc.identifier.cristin1645088
dc.relation.projectAndre: Estonian Environment Agency (project no. 3.-3/63)nb_NO
cristin.unitcode7511,3,0,0
cristin.unitnameAvdeling for akvatisk økologi
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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