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dc.contributor.authorOjaveer, E.A.
dc.contributor.authorEvtyukhova, B.K.
dc.contributor.authorNaglis, A.K.
dc.coverage.spatialBaltic Seaen_US
dc.coverage.spatialEeastern Balticen_US
dc.date.accessioned2019-12-06T09:14:00Z
dc.date.available2019-12-06T09:14:00Z
dc.date.issued1975
dc.identifier.issn0428-4984
dc.identifier.urihttp://hdl.handle.net/1834/15877
dc.description.abstractThis paper deals with data on the herring fishery in subareas 28, 29, 32 and, to a lesser extent, in subarea 28 of the Baltic classified according to season, years and periods covering several years. It is shown that the volume of herring catches has increased due to intensification of the fisheries and extention of the fishing grounds. At the same time, a decrease in the catches per unit effort has been observed as a result of the decline in the herring stocks. The decline in the stocks in recent years is due to the fact that, in comparison to previous years, younger year classes have predominated and that the influence of trawl fishery on cod, the stocks of which increased in 1966, has increased. The herring stocks increased in the Wisla Bay in recent years due to the addition of mature year classes. The structure of the herring stocks is investigated according to populations and areas. It has been proved that the level of exploitation of the herring stocks has recently reached its optimum in the subareas 28, 29 and 23 and that a further increase in fishing intensity will lead to economically and biologically irrational exploitation. Measures which have been introduced in the Soviet Union for the protection and enlargement of herring stocks are stated.en_US
dc.language.isoruen_US
dc.subject.otherBaltic herringen_US
dc.subject.otherCatches per unit efforten_US
dc.subject.otherStructure of herring stocksen_US
dc.titleСостояние запасов и степень эксплуатации сельди восточного побережья Балтийского моряen_US
dc.title.alternativeThe state of herring stocks and their level of exploitation off the East coast of the Balticen_US
dc.typeJournal Contributionen_US
dc.bibliographicCitation.issue1. Sonderheften_US
dc.bibliographicCitation.titleFischerei-Forschung. Fischereiliche Untersuchungen der DDR und der UdSSR in der Ostsee. Рыбохозяйственные исследования ГДР и СССР в бассейне Балтийского моряen_US
dc.bibliographicCitation.volume13en_US
dc.description.notesFischerei-Forschung. Научно-исследовательские труды по рыболовству. Первый совместный сборник научных статей, выработанных в ГДР и в СССР, посвященным проблемам рыболовства на Балтике.en_US
dc.description.statusPublisheden_US
dc.format.pagerangepp. 11-19en_US
dc.subject.asfaASFA_2015::F::Fish stocksen_US
dc.subject.asfaASFA_2015::P::Population structureen_US
dc.subject.asfaASFA_2015::F::Fishing efforten_US
dc.type.refereedNot Knownen_US
refterms.dateFOA2021-01-30T18:48:42Z


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