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dc.contributor.authorSynnes, Ann-Elin
dc.contributor.authorOlsen, Esben Moland
dc.contributor.authorJorde, Per Erik
dc.contributor.authorKnutsen, Halvor
dc.contributor.authorMoland, Even
dc.identifier.citationSynnes, A.-E., Olsen, E. M., Jorde, P. E., Knutsen, H. & Moland, E. (2023). Contrasting management regimes indicative of mesopredator release in temperate coastal fish assemblages. Ecology and Evolution, 13 (12).en_US
dc.description.abstractThe absence of functional top predators has been proposed as a mechanism acting to shape fish assemblages in temperate marine ecosystems, with cascading effects on lower trophic levels. We explore this scenario by comparing the trophic and functional status of fish assemblages in Norwegian marine national parks, open to fishing, to a nearby coastal seascape that harbors a system of marine protected areas (MPAs) including a no-take zone. Demersal fish assemblages were sampled using fyke nets over three consecutive seasons. Atlantic cod (Gadus morhua) is potentially a dominant top predator in this ecosystem, and historically, this and other gadids have been targeted by the full range of former and present fisheries. In the present study, we find that average body size of the Atlantic cod was significantly larger in the zoned seascape compared to the unprotected areas (mean ± SD: 36.6 cm ± 14.38 vs. 23.4 ± 7.50; p < .001) and that the unprotected seascape was characterized by a higher abundance of mesopredator fish species. These observations are consistent with the hypothesis that the protection of top predators within MPAs aids to control the mesopredator populations and provides empirical support to the notion that the present state of many coastal fish assemblages is driven by mesopredator release linked to functional depletion of large top predators.en_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleContrasting management regimes indicative of mesopredator release in temperate coastal fish assemblagesen_US
dc.title.alternativeContrasting management regimes indicative of mesopredator release in temperate coastal fish assemblagesen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder© 2023 The Author(s)en_US
dc.subject.nsiVDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470en_US
dc.source.journalEcology and Evolutionen_US
dc.relation.projectNorges forskningsråd: 294926en_US

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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal