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Record W7133281730

Stock assessment 2023 Snow Crab

2024· other· en· W7133281730 on OpenAlexfundno aff
Fisheries and Oceans Canada, Pêches et Océans Canada

Bibliographic record

VenueFederal Open Science Repository of Canada / Le Dépôt fédéral de science ouverte du Canada · 2024
Typeother
Languageen
Field
Topic
Canadian institutionsnot available
FundersFisheries and Oceans Canada
KeywordsStock (firearms)PopulationSnowClimate changeEcosystemFish stockStock assessment
DOInot available

Abstract

fetched live from OpenAlex

Status The 2023 southern Gulf of St. Lawrence snow crab commercial biomass index, estimated at 67,703 tonnes (t), is above the Upper Stock Reference (USR) with very high likelihood, placing the stock in the Healthy Zone of the Precautionary Approach (PA) Framework. Trends Following a period of high levels from 2018 to 2022, the commercial biomass index decreased by 21% in 2023. Pre-recruits to the fishery decreased to below the time series (1997-2023) average in 2023. Female spawning stock indices have increased since 2006 and have remained at high levels in 2023. The population recruitment index was at the highest recorded level in 2021, but has decreased in 2023 to the time series average. Ecosystem and Climate Change Considerations There is continued evidence of warming conditions in the southern Gulf of St. Lawrence that can impact snow crab population dynamics and distribution; and the mechanisms require further investigation. Stock Advice Based on the harvest decision rule, the 2023 commercial biomass index corresponds to a target exploitation rate of 38.59% and a catch option of 26,126 t for the 2024 southern Gulf of St. Lawrence fishery. A risk analysis indicates that this catch option would result in a very high likelihood that the commercial stock would remain in the Healthy Zone of the PA after the 2024 fishery.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.002
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.746
Threshold uncertainty score0.504

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.002
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0030.002
Science and technology studies0.0010.000
Scholarly communication0.0010.000
Open science0.0010.001
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0240.009

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.

Opus teacher head0.012
GPT teacher head0.268
Teacher spread0.257 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2024
Admission routes1
Has abstractyes

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Same venueFederal Open Science Repository of Canada / Le Dépôt fédéral de science ouverte du Canada→French-language works237,207→