Project Details
Description
The aim of this project is to improve the management of eastern Baltic cod by
1. providing new information on growth and mortality patterns.
2. develop a validated method for deriving this information from historic and future samples.
In recent years, the traditional age-based stock assessment had to be abandoned owing to extensive uncertainties in stock trends. These uncertainties were to a large extent attributable to inconsistencies in age estimation. As a consequence thereof, the current stock status is unknown.
Estimates of growth and mortality rely on unbiased age information. TABACOD will provide this information through a large scale tagging experiment, where 20.000 cod are tagged with and externally visible tag as well as with an internal tag on their otoliths. This experiment will also provide the samples for the development and validation of a new age estimation method based on the chemical composition of the cod's otoliths.
The knowledge gained will be incorporated in length-based assessment models and their performance compared to the traditional methods evaluated in order to provide the ICES stock assessment group with the relevant tools to provide a reliable advice and to improve stock exploitation.
Partners
National Institute of Aquatic Resources, DTU Aqua (coordinator)
Swedish University of Agricultural Sciences, Sweden
Thünen-Institute, Germany
National Marine Fisheries Research Institute, Poland
Funding
The project is funded by BalticSea2020.
Research area: Marine Populations and Ecosystem Dynamics
Research area: Marine Living Resources
1. providing new information on growth and mortality patterns.
2. develop a validated method for deriving this information from historic and future samples.
In recent years, the traditional age-based stock assessment had to be abandoned owing to extensive uncertainties in stock trends. These uncertainties were to a large extent attributable to inconsistencies in age estimation. As a consequence thereof, the current stock status is unknown.
Estimates of growth and mortality rely on unbiased age information. TABACOD will provide this information through a large scale tagging experiment, where 20.000 cod are tagged with and externally visible tag as well as with an internal tag on their otoliths. This experiment will also provide the samples for the development and validation of a new age estimation method based on the chemical composition of the cod's otoliths.
The knowledge gained will be incorporated in length-based assessment models and their performance compared to the traditional methods evaluated in order to provide the ICES stock assessment group with the relevant tools to provide a reliable advice and to improve stock exploitation.
Partners
National Institute of Aquatic Resources, DTU Aqua (coordinator)
Swedish University of Agricultural Sciences, Sweden
Thünen-Institute, Germany
National Marine Fisheries Research Institute, Poland
Funding
The project is funded by BalticSea2020.
Research area: Marine Populations and Ecosystem Dynamics
Research area: Marine Living Resources
| Status | Finished |
|---|---|
| Effective start/end date | 01/01/2016 → 31/12/2019 |
Collaborative partners
- Technical University of Denmark (lead)
- Swedish University of Agricultural Sciences (Project partner)
- National Marine Fisheries Research Institute (Project partner)
- Johann Heinrich von Thunen Institute (Project partner)
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