The impact of variations in oceanographic conditions on distribution, aggregation structure and fishery pattern of redfish (Sebastes mentella Travin) in the pelagial of the Irminger Sea and adjacent waters
Bibliographic record
Abstract
No abstracts are to be cited without prior reference to the author.Analysis of data from acoustic trawl surveys of Sebastes mentella in the Irminger Sea pelagial suggests that extension of redfish distribution to the southwest observed since the mid-1990s was caused by migration of some aggregations from the traditional feeding areas due to an increased advection of Atlantic waters by the Irminger current and higher temperatures of the surface layer (TSL). However, the use solely of the data from surveys conducted every other year limits the possibility to study the impact of variations in oceanographic conditions on distribution, aggregation structure and fishery pattern of redfish in the long term, although such information is essential for the development of sustainable harvesting strategies for fish resources. Data on monthly mean TSL fields at the regular grid nodes for 1982-2008 were used as additional oceanographic indices. To identify and forecast TSL data, the aliquant frequency method was used. Besides, the calculations used air temperature data for 1949-2008 to derive the trend component which was applied to fill in the gaps in the basic TSL data and make a projection. Interannual spatial bathymetric variability in some population parameters of redfish in the Irminger and Labrador Sea was analysed. СPUE for the northeastern and southwestern fishing area was calculated. A statistically significant correlation between CPUE and TSL was revealed, which suggests that CPUE indices directly depend on primary production conditions during spring. CPUE forecasted for 2009-2010 shows a decreasing trend in the Labrador Sea. A strong impact of oceanographic conditions on different fishery patterns for redfish was demonstrated. It was concluded that the proposed division into the northeastern and southwestern fishing areas, as well as the use of two units in the management of the redfish stock in the pelagial of the Irminger Sea and adjacent waters are not efficient and lack scientific substantiation.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".