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Brage IMR
Report . 2025
Data sources: Brage IMR
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Distribution and abundance of Norwegian spring-spawning herring during the spawning season in 2025

Authors: Salthaug, Are; Stenevik, Erling Kåre; Johnsen, Espen;

Distribution and abundance of Norwegian spring-spawning herring during the spawning season in 2025

Abstract

I perioden 15. februar - 3. mars 2025 ble gytefeltene til norsk vårgytende sild fra Møre (62º15ˊN) til Tromsøflaket (71ºN) dekket akustisk med det kommersielle fiskefartøyet MS Eros og forskningsfartøyet RV G.O. Sars. Den estimerte biomassen var omtrent 23 % lavere, og det estimerte antallet omtrent 29 % lavere sammenlignet med fjorårets tokt. Usikkerheten i årets estimater er høyere enn i fjor. Den målte delen av bestanden var dominert av 2016-årsklassen med 54 % i antall og 56 % i vekt. Mesteparten av gytebestanden befant seg vest og sørvest av Lofoten år. I likhet med de siste årene ble det observert veldig lite sild på de tradisjonelt viktige gytefeltene sør for Røstbanken. På årets tokt ble det observert en høyere andel gytende sild enn i de åtte foregående årene. Det anbefales å bruke estimatene av antall per alder fra toktet i 2025 i ICES sin bestandsvurdering av norsk vårgytende sild.

Distribution and abundance of Norwegian spring-spawning herring during the spawning season in 2025

Country
Norway
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green