The Code of Long-term Fluctuations of Norwegian Spring spawning herring ...
No abstracts are to be cited without prior reference to the author.Norwegian Spring spawning herring (Cluea harengus) been associated with large fluctuations. The fluctuations of the biomasses has been poor understood and caused problems in biomass management. Better long-term forecasting thus is cr...
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| Format: | Article in Journal/Newspaper |
| Language: | unknown |
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ASC 2002 - Q - Theme session
2024
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| Online Access: | https://dx.doi.org/10.17895/ices.pub.25443325.v1 https://ices-library.figshare.com/articles/conference_contribution/The_Code_of_Long-term_Fluctuations_of_Norwegian_Spring_spawning_herring/25443325/1 |
| Summary: | No abstracts are to be cited without prior reference to the author.Norwegian Spring spawning herring (Cluea harengus) been associated with large fluctuations. The fluctuations of the biomasses has been poor understood and caused problems in biomass management. Better long-term forecasting thus is crucial for an economical and sustainable utilization of the herring biomass. In this investigation time series of the Kola section sea temperature and the biomass of herring have been investigated by a wavelets analysis to identify the source of long-term cycles. The wavelet analysis shows that the Kola section temperature series has dominant cycles correlated to the 18.6 yr lunar nodal tide and harmonic cycles of 18.6/3=6.2, and 3*18.6=55.8 years. The identified dominant temperature cycles in the Kola section temperature series are explained by a deterministic 18.6 yr lunar nodal tide that influences Atlantic inflow to the Barents Sea. The biomass of Norwegian spring spawning herring has adopted a dominant eigen ... |
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