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Premiers éléments d'une relation stock/recrutement chez le saumon atlantique (Salmo salar) en France

2023· preprint· fr· W9120002 on OpenAlexaboutno aff
Etienne Prévost, Jean-Luc J.-L. Baglinière, Gérard Maisse, A. Nihouarn

Bibliographic record

VenueHAL (Le Centre pour la Communication Scientifique Directe) · 2023
Typepreprint
Languagefr
FieldEnvironmental Science
TopicFish Ecology and Management Studies
Canadian institutionsnot available
Fundersnot available
KeywordsForestryGeographyHumanitiesArt

Abstract

fetched live from OpenAlex

Le suivi de la population de saumon atlantique (Salmo salar) sur l’Oir (Basse Normandie) de 1984 à 1994 permet de disposer d’une série de données sur le stock (dépose d’œufs) et le recrutement (production de juvéniles migrant vers la mer ou smolts) portant sur 10 cohortes. La taille du stock initial influe sur la survie, depuis l’œuf jusqu’au smolt, par un effet densité-dépendant négatif, effet qui suggère l’existence d’une relation stock/recrutement avec un “plafonnement” du recrutement moyen quand le stock s’accroît fortement. Le niveau du recrutement moyen maximum est inférieur à celui qui a été observé sur d’autres rivières plus septentrionales (Canada et îles Britanniques). La productivité de l’Oir pour le recrutement en smolts est faible, ce qui fragilise ce système du point de vue du renouvellement des générations.

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)0.001
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: Empirical
Teacher disagreement score0.321
Threshold uncertainty score0.637

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0010.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0030.000

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.

Opus teacher head0.014
GPT teacher head0.225
Teacher spread0.212 · 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

Citations8
Published2023
Admission routes1
Has abstractyes

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