Description
The flatfish species turbot (Scophthalmus maximus) and brill (Scophthalmus rhombus) in the North Sea are important commercial bycatches for the Dutch commercial fleet. Brill is currently a data-limited species, which is why ICES for its
stock assessment uses a method based on trends in the commercial landings per unit of effort. For turbot more data are available and the advice for turbot is currently based on a full analytical assessment. Nevertheless, there is still considerable uncertainty in the input data which undermines the overall quality of the assessment. A new standardized survey with higher catch rates for large flatfish is developed to improve assessments for these species. For this reason a dedicated industry survey for turbot and brill was designed and implemented.
Resources
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Tags
- biology-sample-data
- brill
- catch-per-unit-efforts
- catch-weights
- datras
- fish-age-data
- fish-length-composition
- fish-length-data
- groundfish-surveys
- ices
- industry-survey
- length-frequency-distributions
- live-weight
- maturity
- netherlands-bsas
- north-sea
- population-composition
- population-distribution
- sex
- trawl-survey
- turbot