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dc.contributor.authorHeikinheimo, Outi
dc.contributor.authorMarjomäki, Timo J.
dc.contributor.authorOlin, Mikko
dc.contributor.authorRusanen, Pekka
dc.date.accessioned2022-02-17T14:04:15Z
dc.date.available2022-02-17T14:04:15Z
dc.date.issued2022
dc.identifier.citationHeikinheimo, O., Marjomäki, T. J., Olin, M., & Rusanen, P. (2022). Cormorant predation mortality of perch (Perca fluviatilis) in coastal and archipelago areas, northern Baltic Sea. <i>ICES Journal of Marine Science</i>, <i>79</i>(2), 337-349. <a href="https://doi.org/10.1093/icesjms/fsab258" target="_blank">https://doi.org/10.1093/icesjms/fsab258</a>
dc.identifier.otherCONVID_104278434
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/79826
dc.description.abstractPerch (Perca fluviatilis) is an important prey species of the great cormorant (Phalacrocorax carbo sinensis) in the coastal waters of the northern Baltic Sea. The annual predation mortality caused by cormorants was estimated based on the consumed numbers of perch in relation to the abundance of perch in vulnerable age groups in the sea. We used existing stock assessment data (Archipelago Sea) or a simple population model in other areas (Gulf of Finland, Bothnian Sea, and Quark), based on commercial and recreational perch catches, and estimated fishing and natural mortalities, with distributions describing our understanding about the likelihood of different values for every variable. The median predation mortality was 4–10% annually, depending on the sea area. The area-specific 80% likelihood limits ranged from 3 to 21% annually. Compared to a recent perch tagging study in the Quark, the cormorant-induced mortality estimates were considerably lower, but the likelihood distributions partly overlapped. The results were sensitive to the estimated number of vulnerable perch in the population, which in turn largely depends on the natural mortality in young perch age groups.en
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherOxford University Press (OUP)
dc.relation.ispartofseriesICES Journal of Marine Science
dc.rightsCC BY 4.0
dc.subject.otherItämeri
dc.subject.otherBaltic Sea
dc.subject.othercoastal fisheries
dc.subject.othercormorant
dc.subject.othermortality
dc.subject.otherperch
dc.subject.otherpredation
dc.titleCormorant predation mortality of perch (Perca fluviatilis) in coastal and archipelago areas, northern Baltic Sea
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202202171553
dc.contributor.laitosBio- ja ympäristötieteiden laitosfi
dc.contributor.laitosDepartment of Biological and Environmental Scienceen
dc.contributor.oppiaineAkvaattiset tieteetfi
dc.contributor.oppiaineResurssiviisausyhteisöfi
dc.contributor.oppiaineAquatic Sciencesen
dc.contributor.oppiaineSchool of Resource Wisdomen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.description.reviewstatuspeerReviewed
dc.format.pagerange337-349
dc.relation.issn1054-3139
dc.relation.numberinseries2
dc.relation.volume79
dc.type.versionpublishedVersion
dc.rights.copyright© The Author(s) 2021. Published by Oxford University Press on behalf of International Council for the Exploration of the Sea.
dc.rights.accesslevelopenAccessfi
dc.subject.ysosaalistus
dc.subject.ysokuolleisuus
dc.subject.ysoahven
dc.subject.ysokalakannat
dc.subject.ysomerimetso (laji)
dc.subject.ysorannikkovedet
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p946
jyx.subject.urihttp://www.yso.fi/onto/yso/p5003
jyx.subject.urihttp://www.yso.fi/onto/yso/p20153
jyx.subject.urihttp://www.yso.fi/onto/yso/p8529
jyx.subject.urihttp://www.yso.fi/onto/yso/p28817
jyx.subject.urihttp://www.yso.fi/onto/yso/p10260
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1093/icesjms/fsab258


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