Report of the Study Group on Red-fish Stocks (SGRS)
Notice bibliographique
Résumé
1. Review of the survey design of the international trawl- acoustic surveys in the Irminger Sea and adjacent waters. The methods of hydroacoustic and trawl estimation of abundance and biomass of pelagic redfish in the Irminger (and partly Labrador) Sea were reviewed under consideration of past experience, re-cent knowledge on the biology of the species and technological developments. Recommendations for the upcoming survey in June/July 2005 and for future work were developed by the Group. Especially the signal-to-noise ratios and tar-get strength models applied within the hydroacoustic measurements require fur-ther experimental work. The use of a lower transducer frequency (18 kHz) was also considered as a possibility for the estimation of redfish density below the “deep-scattering layer” (DSL). 2. Planning of the international trawl/acoustic survey of redfish in the Irminger Sea and adjacent waters in June/July 2005. Based on past experience and the suggested improvements that can already be implemented during the next survey in June/July 2005, the detailed survey plan for this survey was set up. Three ves-sels from Germany, Iceland and Russia will participate in the survey and operate within an area of around 400 000 NM2 in the Irminger and Labrador Sea to esti-mate the abundance and biomass of pelagic redfish. In the depth zone that can be surveyed by hydroacoustic measurements, i.e. shallower than the DSL (down to about 350 m), hydroacoustic measurements and identification trawls will be car-ried out, whereas within and below the DSL (down to about 1000 m), redfish abundance can currently only be estimated by trawls. The Group decided that the trawling duration of the deeper hauls will be expanded to at least 3 hours to in-crease the catch rates for a more precise abundance estimation. As in the past surveys, biological data will be collected from the redfish caught by the pelagic nets employed, and hydrographic measurements will be taken on regular stations on the survey tracks. 3. Required frequency, number of vessels needed and timing of future surveys. Although an annual survey would certainly allow an improved estimation of in-terannual changes in distribution and abundance, the Group felt that the continua-tion of bi-annual surveys would be more realistic, considering limitations in na-tional budgets for survey time. The Group recommends that at least four vessels should participate to allow a sufficiently dense coverage of the survey area. The efforts directed at involving other nations in the survey should be continued. Since the most recent survey in May-June 2003 was carried out about 3 weeks earlier than previous surveys and pointed to considerable seasonal effects, the Group recommends to keep the timing of the survey from (mid-)June to (mid- to late) July.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,002 | 0,002 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,003 | 0,002 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,001 | 0,001 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,026 | 0,012 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».