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Supplemental Information

Supplemantary file 1. More results of SystmodII runs

Yield in biomass per length group of NSS herring 1982-90; Effect of F on stock biomass; Sensitivity of the model to varation in k and Lmax

DOI: 10.7287/peerj.preprints.2604v1/supp-1

Supplementary file 2. Input data to SystmodII

Each year from 1982 until 2009 NSS herring stock (ICES working grop reports and Holst et al., 1996): No of individuals at age; Average weight at age; Average length at age; Standard deviation to length at age; VPA data for total Stock biomass and spawning Stock biomass;Yearly F-values. Natural mortality at age

DOI: 10.7287/peerj.preprints.2604v1/supp-2

Supplementary file 3. Output data from Systmod II

The model was run assuming observed F and historical recruitment: Simulated no of individuals per year and lengthgroup; Simulated length and biomass per year and lengthgroup, Simulated yield. A possiblity to calculate catch and resulting biomass when assuming different F-values.

DOI: 10.7287/peerj.preprints.2604v1/supp-3

Additional Information

Competing Interests

Kristin Hamre is an academic editor in PeerJ. Steinar Moen is an employee and shareholder in Powersim Software AS.

Author Contributions

Kristin Hamre performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Steinar Moen performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, prepared figures and/or tables, reviewed drafts of the paper.

Johannes Hamre conceived and designed the experiments, performed the experiments, reviewed drafts of the paper.

Data Deposition

The following information was supplied regarding data availability:

The raw data has been supplied as a supplementary file


This work was financed by the Authors.

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